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"
41 #ifdef HAVE_SYSV_COMPAT
43 #define DEFAULT_SYSV_TIMEOUT_USEC (5*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) || defined(TARGET_ANGSTROM)
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;
118 s->sysv_start_priority_from_rcnd = -1;
121 s->guess_main_pid = true;
123 exec_context_init(&s->exec_context);
125 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
127 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
130 static void service_unwatch_control_pid(Service *s) {
133 if (s->control_pid <= 0)
136 unit_unwatch_pid(UNIT(s), s->control_pid);
140 static void service_unwatch_main_pid(Service *s) {
143 if (s->main_pid <= 0)
146 unit_unwatch_pid(UNIT(s), s->main_pid);
150 static int service_set_main_pid(Service *s, pid_t pid) {
162 s->main_pid_known = true;
164 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) {
165 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
166 s->meta.id, (unsigned long) pid);
168 s->main_pid_alien = true;
170 s->main_pid_alien = false;
172 exec_status_start(&s->main_exec_status, pid);
177 static void service_close_socket_fd(Service *s) {
180 if (s->socket_fd < 0)
183 close_nointr_nofail(s->socket_fd);
187 static void service_connection_unref(Service *s) {
190 if (!s->accept_socket)
193 socket_connection_unref(s->accept_socket);
194 s->accept_socket = NULL;
197 static void service_done(Unit *u) {
198 Service *s = SERVICE(u);
205 #ifdef HAVE_SYSV_COMPAT
209 free(s->sysv_runlevels);
210 s->sysv_runlevels = NULL;
213 free(s->status_text);
214 s->status_text = NULL;
216 exec_context_done(&s->exec_context);
217 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
218 s->control_command = NULL;
219 s->main_command = NULL;
221 /* This will leak a process, but at least no memory or any of
223 service_unwatch_main_pid(s);
224 service_unwatch_control_pid(s);
227 unit_unwatch_bus_name(UNIT(u), s->bus_name);
232 service_close_socket_fd(s);
233 service_connection_unref(s);
235 set_free(s->configured_sockets);
237 unit_unwatch_timer(u, &s->timer_watch);
240 #ifdef HAVE_SYSV_COMPAT
241 static char *sysv_translate_name(const char *name) {
244 if (!(r = new(char, strlen(name) + sizeof(".service"))))
247 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
248 if (endswith(name, ".sh"))
249 /* Drop Debian-style .sh suffix */
250 strcpy(stpcpy(r, name) - 3, ".service");
253 if (startswith(name, "boot."))
254 /* Drop SuSE-style boot. prefix */
255 strcpy(stpcpy(r, name + 5), ".service");
257 #ifdef TARGET_FRUGALWARE
258 if (startswith(name, "rc."))
259 /* Drop Frugalware-style rc. prefix */
260 strcpy(stpcpy(r, name + 3), ".service");
263 /* Normal init scripts */
264 strcpy(stpcpy(r, name), ".service");
269 static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
271 /* We silently ignore the $ prefix here. According to the LSB
272 * spec it simply indicates whether something is a
273 * standardized name or a distribution-specific one. Since we
274 * just follow what already exists and do not introduce new
275 * uses or names we don't care who introduced a new name. */
277 static const char * const table[] = {
278 /* LSB defined facilities */
279 "local_fs", SPECIAL_LOCAL_FS_TARGET,
280 #ifndef TARGET_MANDRIVA
281 /* Due to unfortunate name selection in Mandriva,
282 * $network is provided by network-up which is ordered
283 * after network which actually starts interfaces.
284 * To break the loop, just ignore it */
285 "network", SPECIAL_NETWORK_TARGET,
287 "named", SPECIAL_NSS_LOOKUP_TARGET,
288 "portmap", SPECIAL_RPCBIND_TARGET,
289 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
290 "syslog", SPECIAL_SYSLOG_TARGET,
291 "time", SPECIAL_TIME_SYNC_TARGET,
293 /* common extensions */
294 "mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
295 "x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE,
298 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
299 "mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
303 "MTA", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
304 "smtpdaemon", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
305 "httpd", SPECIAL_HTTP_DAEMON_TARGET,
309 "smtp", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
320 n = *name == '$' ? name + 1 : name;
322 for (i = 0; i < ELEMENTSOF(table); i += 2) {
324 if (!streq(table[i], n))
330 if (!(r = strdup(table[i+1])))
336 /* If we don't know this name, fallback heuristics to figure
337 * out whether something is a target or a service alias. */
340 if (!unit_prefix_is_valid(n))
343 /* Facilities starting with $ are most likely targets */
344 r = unit_name_build(n, NULL, ".target");
345 } else if (filename && streq(name, filename))
346 /* Names equaling the file name of the services are redundant */
349 /* Everything else we assume to be normal service names */
350 r = sysv_translate_name(n);
361 static int sysv_fix_order(Service *s) {
367 if (s->sysv_start_priority < 0)
370 /* For each pair of services where at least one lacks a LSB
371 * header, we use the start priority value to order things. */
373 LIST_FOREACH(units_by_type, other, s->meta.manager->units_by_type[UNIT_SERVICE]) {
376 bool special_s, special_t;
378 t = (Service*) other;
383 if (t->meta.load_state != UNIT_LOADED)
386 if (t->sysv_start_priority < 0)
389 /* If both units have modern headers we don't care
390 * about the priorities */
391 if ((s->meta.fragment_path || s->sysv_has_lsb) &&
392 (t->meta.fragment_path || t->sysv_has_lsb))
395 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
396 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
398 if (special_t && !special_s)
400 else if (special_s && !special_t)
402 else if (t->sysv_start_priority < s->sysv_start_priority)
404 else if (t->sysv_start_priority > s->sysv_start_priority)
409 /* FIXME: Maybe we should compare the name here lexicographically? */
411 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
418 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
421 if (!(c = new0(ExecCommand, 1)))
424 if (!(c->path = strdup(path))) {
429 if (!(c->argv = strv_new(path, arg1, NULL))) {
438 static int sysv_exec_commands(Service *s) {
442 assert(s->sysv_path);
444 if (!(c = exec_command_new(s->sysv_path, "start")))
446 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
448 if (!(c = exec_command_new(s->sysv_path, "stop")))
450 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
452 if (!(c = exec_command_new(s->sysv_path, "reload")))
454 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
459 static int service_load_sysv_path(Service *s, const char *path) {
470 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
478 if (!(f = fopen(path, "re"))) {
479 r = errno == ENOENT ? 0 : -errno;
484 if (fstat(fileno(f), &st) < 0) {
490 if (!(s->sysv_path = strdup(path))) {
495 s->sysv_mtime = timespec_load(&st.st_mtim);
497 if (null_or_empty(&st)) {
498 u->meta.load_state = UNIT_MASKED;
504 char l[LINE_MAX], *t;
506 if (!fgets(l, sizeof(l), f)) {
511 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
521 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
523 s->sysv_has_lsb = true;
527 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
533 t += strspn(t, WHITESPACE);
535 if (state == NORMAL) {
537 /* Try to parse Red Hat style chkconfig headers */
539 if (startswith_no_case(t, "chkconfig:")) {
541 char runlevels[16], *k;
545 if (sscanf(t+10, "%15s %i %*i",
547 &start_priority) != 2) {
549 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
553 /* A start priority gathered from the
554 * symlink farms is preferred over the
555 * data from the LSB header. */
556 if (start_priority < 0 || start_priority > 99)
557 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
559 s->sysv_start_priority = start_priority;
561 char_array_0(runlevels);
562 k = delete_chars(runlevels, WHITESPACE "-");
567 if (!(d = strdup(k))) {
572 free(s->sysv_runlevels);
573 s->sysv_runlevels = d;
576 } else if (startswith_no_case(t, "description:")) {
578 size_t k = strlen(t);
582 if (t[k-1] == '\\') {
587 if ((j = strstrip(t+12)) && *j) {
588 if (!(d = strdup(j))) {
595 free(chkconfig_description);
596 chkconfig_description = d;
598 } else if (startswith_no_case(t, "pidfile:")) {
605 if (!path_is_absolute(fn)) {
606 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
610 if (!(fn = strdup(fn))) {
619 } else if (state == DESCRIPTION) {
621 /* Try to parse Red Hat style description
624 size_t k = strlen(t);
632 if ((j = strstrip(t)) && *j) {
635 if (chkconfig_description)
636 d = join(chkconfig_description, " ", j, NULL);
645 free(chkconfig_description);
646 chkconfig_description = d;
649 } else if (state == LSB || state == LSB_DESCRIPTION) {
651 if (startswith_no_case(t, "Provides:")) {
657 FOREACH_WORD_QUOTED(w, z, t+9, i) {
660 if (!(n = strndup(w, z))) {
665 r = sysv_translate_facility(n, file_name_from_path(path), &m);
674 if (unit_name_to_type(m) == UNIT_SERVICE)
675 r = unit_add_name(u, m);
682 * indication that the
684 * now available. This
687 * targets do NOT pull
690 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true);
693 log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
698 } else if (startswith_no_case(t, "Required-Start:") ||
699 startswith_no_case(t, "Should-Start:") ||
700 startswith_no_case(t, "X-Start-Before:") ||
701 startswith_no_case(t, "X-Start-After:")) {
707 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
710 if (!(n = strndup(w, z))) {
715 r = sysv_translate_facility(n, file_name_from_path(path), &m);
718 log_error("[%s:%u] Failed to translate LSB dependency %s, ignoring: %s", path, line, n, strerror(-r));
728 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
731 log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
735 } else if (startswith_no_case(t, "Default-Start:")) {
740 k = delete_chars(t+14, WHITESPACE "-");
743 if (!(d = strdup(k))) {
748 free(s->sysv_runlevels);
749 s->sysv_runlevels = d;
752 } else if (startswith_no_case(t, "Description:")) {
755 state = LSB_DESCRIPTION;
757 if ((j = strstrip(t+12)) && *j) {
758 if (!(d = strdup(j))) {
765 free(long_description);
766 long_description = d;
768 } else if (startswith_no_case(t, "Short-Description:")) {
773 if ((j = strstrip(t+18)) && *j) {
774 if (!(d = strdup(j))) {
781 free(short_description);
782 short_description = d;
784 } else if (state == LSB_DESCRIPTION) {
786 if (startswith(l, "#\t") || startswith(l, "# ")) {
789 if ((j = strstrip(t)) && *j) {
792 if (long_description)
793 d = join(long_description, " ", t, NULL);
802 free(long_description);
803 long_description = d;
812 if ((r = sysv_exec_commands(s)) < 0)
814 if (s->sysv_runlevels &&
815 chars_intersect(RUNLEVELS_BOOT, s->sysv_runlevels) &&
816 chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
817 /* Service has both boot and "up" runlevels
818 configured. Kill the "up" ones. */
819 delete_chars(s->sysv_runlevels, RUNLEVELS_UP);
822 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
823 /* If there a runlevels configured for this service
824 * but none of the standard ones, then we assume this
825 * is some special kind of service (which might be
826 * needed for early boot) and don't create any links
829 s->meta.default_dependencies = false;
831 /* Don't timeout special services during boot (like fsck) */
834 s->timeout_usec = DEFAULT_SYSV_TIMEOUT_USEC;
836 /* Special setting for all SysV services */
837 s->type = SERVICE_FORKING;
838 s->remain_after_exit = !s->pid_file;
839 s->guess_main_pid = false;
840 s->restart = SERVICE_RESTART_NO;
842 if (s->meta.manager->sysv_console)
843 s->exec_context.std_output = EXEC_OUTPUT_TTY;
845 s->exec_context.kill_mode = KILL_PROCESS;
847 /* We use the long description only if
848 * no short description is set. */
850 if (short_description)
851 description = short_description;
852 else if (chkconfig_description)
853 description = chkconfig_description;
854 else if (long_description)
855 description = long_description;
862 if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
867 u->meta.description = d;
870 /* The priority that has been set in /etc/rcN.d/ hierarchies
871 * takes precedence over what is stored as default in the LSB
873 if (s->sysv_start_priority_from_rcnd >= 0)
874 s->sysv_start_priority = s->sysv_start_priority_from_rcnd;
876 u->meta.load_state = UNIT_LOADED;
884 free(short_description);
885 free(long_description);
886 free(chkconfig_description);
891 static int service_load_sysv_name(Service *s, const char *name) {
897 /* For SysV services we strip the boot.*, rc.* and *.sh
898 * prefixes/suffixes. */
899 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
900 if (endswith(name, ".sh.service"))
905 if (startswith(name, "boot."))
909 #ifdef TARGET_FRUGALWARE
910 if (startswith(name, "rc."))
914 STRV_FOREACH(p, s->meta.manager->lookup_paths.sysvinit_path) {
918 path = join(*p, "/", name, NULL);
922 assert(endswith(path, ".service"));
923 path[strlen(path)-8] = 0;
925 r = service_load_sysv_path(s, path);
927 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
928 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
929 /* Try Debian style *.sh source'able init scripts */
931 r = service_load_sysv_path(s, path);
937 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
938 /* Try SUSE style boot.* init scripts */
940 path = join(*p, "/boot.", name, NULL);
944 /* Drop .service suffix */
945 path[strlen(path)-8] = 0;
946 r = service_load_sysv_path(s, path);
951 #ifdef TARGET_FRUGALWARE
952 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
953 /* Try Frugalware style rc.* init scripts */
955 path = join(*p, "/rc.", name, NULL);
959 /* Drop .service suffix */
960 path[strlen(path)-8] = 0;
961 r = service_load_sysv_path(s, path);
969 if ((s->meta.load_state != UNIT_STUB))
976 static int service_load_sysv(Service *s) {
983 /* Load service data from SysV init scripts, preferably with
986 if (strv_isempty(s->meta.manager->lookup_paths.sysvinit_path))
989 if ((t = s->meta.id))
990 if ((r = service_load_sysv_name(s, t)) < 0)
993 if (s->meta.load_state == UNIT_STUB)
994 SET_FOREACH(t, s->meta.names, i) {
998 if ((r = service_load_sysv_name(s, t)) < 0)
1001 if (s->meta.load_state != UNIT_STUB)
1009 static int fsck_fix_order(Service *s) {
1015 if (s->fsck_passno <= 0)
1018 /* For each pair of services where both have an fsck priority
1019 * we order things based on it. */
1021 LIST_FOREACH(units_by_type, other, s->meta.manager->units_by_type[UNIT_SERVICE]) {
1025 t = (Service*) other;
1030 if (t->meta.load_state != UNIT_LOADED)
1033 if (t->fsck_passno <= 0)
1036 if (t->fsck_passno < s->fsck_passno)
1038 else if (t->fsck_passno > s->fsck_passno)
1043 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
1050 static int service_verify(Service *s) {
1053 if (s->meta.load_state != UNIT_LOADED)
1056 if (!s->exec_command[SERVICE_EXEC_START]) {
1057 log_error("%s lacks ExecStart setting. Refusing.", s->meta.id);
1061 if (s->type != SERVICE_ONESHOT &&
1062 s->exec_command[SERVICE_EXEC_START]->command_next) {
1063 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", s->meta.id);
1067 if (s->type == SERVICE_ONESHOT &&
1068 s->exec_command[SERVICE_EXEC_RELOAD]) {
1069 log_error("%s has an ExecReload setting, which is not allowed for Type=oneshot services. Refusing.", s->meta.id);
1073 if (s->type == SERVICE_DBUS && !s->bus_name) {
1074 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", s->meta.id);
1078 if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
1079 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
1086 static int service_add_default_dependencies(Service *s) {
1091 /* Add a number of automatic dependencies useful for the
1092 * majority of services. */
1094 /* First, pull in base system */
1095 if (s->meta.manager->running_as == MANAGER_SYSTEM) {
1097 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
1100 } else if (s->meta.manager->running_as == MANAGER_USER) {
1102 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
1106 /* Second, activate normal shutdown */
1107 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
1110 static void service_fix_output(Service *s) {
1113 /* If nothing has been explicitly configured, patch default
1114 * output in. If input is socket/tty we avoid this however,
1115 * since in that case we want output to default to the same
1116 * place as we read input from. */
1118 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1119 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1120 s->exec_context.std_input == EXEC_INPUT_NULL)
1121 s->exec_context.std_error = s->meta.manager->default_std_error;
1123 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1124 s->exec_context.std_input == EXEC_INPUT_NULL)
1125 s->exec_context.std_output = s->meta.manager->default_std_output;
1128 static int service_load(Unit *u) {
1130 Service *s = SERVICE(u);
1134 /* Load a .service file */
1135 if ((r = unit_load_fragment(u)) < 0)
1138 #ifdef HAVE_SYSV_COMPAT
1139 /* Load a classic init script as a fallback, if we couldn't find anything */
1140 if (u->meta.load_state == UNIT_STUB)
1141 if ((r = service_load_sysv(s)) < 0)
1145 /* Still nothing found? Then let's give up */
1146 if (u->meta.load_state == UNIT_STUB)
1149 /* We were able to load something, then let's add in the
1150 * dropin directories. */
1151 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
1154 /* This is a new unit? Then let's add in some extras */
1155 if (u->meta.load_state == UNIT_LOADED) {
1156 service_fix_output(s);
1158 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
1161 if ((r = unit_add_default_cgroups(u)) < 0)
1164 #ifdef HAVE_SYSV_COMPAT
1165 if ((r = sysv_fix_order(s)) < 0)
1169 if ((r = fsck_fix_order(s)) < 0)
1173 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
1176 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1177 s->notify_access = NOTIFY_MAIN;
1179 if (s->type == SERVICE_DBUS || s->bus_name)
1180 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true)) < 0)
1183 if (s->meta.default_dependencies)
1184 if ((r = service_add_default_dependencies(s)) < 0)
1188 return service_verify(s);
1191 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1193 ServiceExecCommand c;
1194 Service *s = SERVICE(u);
1195 const char *prefix2;
1200 p2 = strappend(prefix, "\t");
1201 prefix2 = p2 ? p2 : prefix;
1204 "%sService State: %s\n"
1205 "%sPermissionsStartOnly: %s\n"
1206 "%sRootDirectoryStartOnly: %s\n"
1207 "%sRemainAfterExit: %s\n"
1208 "%sGuessMainPID: %s\n"
1211 "%sNotifyAccess: %s\n",
1212 prefix, service_state_to_string(s->state),
1213 prefix, yes_no(s->permissions_start_only),
1214 prefix, yes_no(s->root_directory_start_only),
1215 prefix, yes_no(s->remain_after_exit),
1216 prefix, yes_no(s->guess_main_pid),
1217 prefix, service_type_to_string(s->type),
1218 prefix, service_restart_to_string(s->restart),
1219 prefix, notify_access_to_string(s->notify_access));
1221 if (s->control_pid > 0)
1223 "%sControl PID: %lu\n",
1224 prefix, (unsigned long) s->control_pid);
1226 if (s->main_pid > 0)
1229 "%sMain PID Known: %s\n"
1230 "%sMain PID Alien: %s\n",
1231 prefix, (unsigned long) s->main_pid,
1232 prefix, yes_no(s->main_pid_known),
1233 prefix, yes_no(s->main_pid_alien));
1238 prefix, s->pid_file);
1243 "%sBus Name Good: %s\n",
1244 prefix, s->bus_name,
1245 prefix, yes_no(s->bus_name_good));
1247 exec_context_dump(&s->exec_context, f, prefix);
1249 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1251 if (!s->exec_command[c])
1254 fprintf(f, "%s-> %s:\n",
1255 prefix, service_exec_command_to_string(c));
1257 exec_command_dump_list(s->exec_command[c], f, prefix2);
1260 #ifdef HAVE_SYSV_COMPAT
1263 "%sSysV Init Script Path: %s\n"
1264 "%sSysV Init Script has LSB Header: %s\n"
1265 "%sSysVEnabled: %s\n",
1266 prefix, s->sysv_path,
1267 prefix, yes_no(s->sysv_has_lsb),
1268 prefix, yes_no(s->sysv_enabled));
1270 if (s->sysv_start_priority >= 0)
1272 "%sSysVStartPriority: %i\n",
1273 prefix, s->sysv_start_priority);
1275 if (s->sysv_runlevels)
1276 fprintf(f, "%sSysVRunLevels: %s\n",
1277 prefix, s->sysv_runlevels);
1280 if (s->fsck_passno > 0)
1282 "%sFsckPassNo: %i\n",
1283 prefix, s->fsck_passno);
1286 fprintf(f, "%sStatus Text: %s\n",
1287 prefix, s->status_text);
1292 static int service_load_pid_file(Service *s, bool warn_if_missing) {
1302 if ((r = read_one_line_file(s->pid_file, &k)) < 0) {
1303 if (warn_if_missing)
1304 log_warning("Failed to read PID file %s after %s. The service might be broken.",
1305 s->pid_file, service_state_to_string(s->state));
1309 r = parse_pid(k, &pid);
1315 if (kill(pid, 0) < 0 && errno != EPERM) {
1316 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
1317 (unsigned long) pid, s->pid_file);
1321 if (s->main_pid_known) {
1322 if (pid == s->main_pid)
1325 log_debug("Main PID changing: %lu -> %lu",
1326 (unsigned long) s->main_pid, (unsigned long) pid);
1327 service_unwatch_main_pid(s);
1328 s->main_pid_known = false;
1331 if ((r = service_set_main_pid(s, pid)) < 0)
1334 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1335 /* FIXME: we need to do something here */
1341 static int service_search_main_pid(Service *s) {
1347 /* If we know it anyway, don't ever fallback to unreliable
1349 if (s->main_pid_known)
1352 if (!s->guess_main_pid)
1355 assert(s->main_pid <= 0);
1357 if ((pid = cgroup_bonding_search_main_pid_list(s->meta.cgroup_bondings)) <= 0)
1360 if ((r = service_set_main_pid(s, pid)) < 0)
1363 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1364 /* FIXME: we need to do something here */
1370 static int service_get_sockets(Service *s, Set **_set) {
1379 if (s->socket_fd >= 0)
1382 if (!set_isempty(s->configured_sockets))
1385 /* Collects all Socket objects that belong to this
1386 * service. Note that a service might have multiple sockets
1387 * via multiple names. */
1389 if (!(set = set_new(NULL, NULL)))
1392 SET_FOREACH(t, s->meta.names, i) {
1396 /* Look for all socket objects that go by any of our
1397 * units and collect their fds */
1399 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1404 p = manager_get_unit(s->meta.manager, k);
1410 if ((r = set_put(set, p)) < 0)
1422 static int service_notify_sockets_dead(Service *s) {
1424 Set *set, *free_set = NULL;
1430 /* Notifies all our sockets when we die */
1432 if (s->socket_fd >= 0)
1435 if (!set_isempty(s->configured_sockets))
1436 set = s->configured_sockets;
1438 if ((r = service_get_sockets(s, &free_set)) < 0)
1444 SET_FOREACH(sock, set, i)
1445 socket_notify_service_dead(sock);
1452 static void service_set_state(Service *s, ServiceState state) {
1453 ServiceState old_state;
1456 old_state = s->state;
1459 if (state != SERVICE_START_PRE &&
1460 state != SERVICE_START &&
1461 state != SERVICE_START_POST &&
1462 state != SERVICE_RELOAD &&
1463 state != SERVICE_STOP &&
1464 state != SERVICE_STOP_SIGTERM &&
1465 state != SERVICE_STOP_SIGKILL &&
1466 state != SERVICE_STOP_POST &&
1467 state != SERVICE_FINAL_SIGTERM &&
1468 state != SERVICE_FINAL_SIGKILL &&
1469 state != SERVICE_AUTO_RESTART)
1470 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1472 if (state != SERVICE_START &&
1473 state != SERVICE_START_POST &&
1474 state != SERVICE_RUNNING &&
1475 state != SERVICE_RELOAD &&
1476 state != SERVICE_STOP &&
1477 state != SERVICE_STOP_SIGTERM &&
1478 state != SERVICE_STOP_SIGKILL) {
1479 service_unwatch_main_pid(s);
1480 s->main_command = NULL;
1483 if (state != SERVICE_START_PRE &&
1484 state != SERVICE_START &&
1485 state != SERVICE_START_POST &&
1486 state != SERVICE_RELOAD &&
1487 state != SERVICE_STOP &&
1488 state != SERVICE_STOP_SIGTERM &&
1489 state != SERVICE_STOP_SIGKILL &&
1490 state != SERVICE_STOP_POST &&
1491 state != SERVICE_FINAL_SIGTERM &&
1492 state != SERVICE_FINAL_SIGKILL) {
1493 service_unwatch_control_pid(s);
1494 s->control_command = NULL;
1495 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1498 if (state == SERVICE_DEAD ||
1499 state == SERVICE_STOP ||
1500 state == SERVICE_STOP_SIGTERM ||
1501 state == SERVICE_STOP_SIGKILL ||
1502 state == SERVICE_STOP_POST ||
1503 state == SERVICE_FINAL_SIGTERM ||
1504 state == SERVICE_FINAL_SIGKILL ||
1505 state == SERVICE_FAILED ||
1506 state == SERVICE_AUTO_RESTART)
1507 service_notify_sockets_dead(s);
1509 if (state != SERVICE_START_PRE &&
1510 state != SERVICE_START &&
1511 state != SERVICE_START_POST &&
1512 state != SERVICE_RUNNING &&
1513 state != SERVICE_RELOAD &&
1514 state != SERVICE_STOP &&
1515 state != SERVICE_STOP_SIGTERM &&
1516 state != SERVICE_STOP_SIGKILL &&
1517 state != SERVICE_STOP_POST &&
1518 state != SERVICE_FINAL_SIGTERM &&
1519 state != SERVICE_FINAL_SIGKILL &&
1520 !(state == SERVICE_DEAD && s->meta.job)) {
1521 service_close_socket_fd(s);
1522 service_connection_unref(s);
1525 /* For the inactive states unit_notify() will trim the cgroup,
1526 * but for exit we have to do that ourselves... */
1527 if (state == SERVICE_EXITED && s->meta.manager->n_reloading <= 0)
1528 cgroup_bonding_trim_list(s->meta.cgroup_bondings, true);
1530 if (old_state != state)
1531 log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1533 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], !s->reload_failure);
1534 s->reload_failure = false;
1537 static int service_coldplug(Unit *u) {
1538 Service *s = SERVICE(u);
1542 assert(s->state == SERVICE_DEAD);
1544 if (s->deserialized_state != s->state) {
1546 if (s->deserialized_state == SERVICE_START_PRE ||
1547 s->deserialized_state == SERVICE_START ||
1548 s->deserialized_state == SERVICE_START_POST ||
1549 s->deserialized_state == SERVICE_RELOAD ||
1550 s->deserialized_state == SERVICE_STOP ||
1551 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1552 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1553 s->deserialized_state == SERVICE_STOP_POST ||
1554 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1555 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1556 s->deserialized_state == SERVICE_AUTO_RESTART) {
1558 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1561 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1563 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1568 if ((s->deserialized_state == SERVICE_START &&
1569 (s->type == SERVICE_FORKING ||
1570 s->type == SERVICE_DBUS ||
1571 s->type == SERVICE_ONESHOT ||
1572 s->type == SERVICE_NOTIFY)) ||
1573 s->deserialized_state == SERVICE_START_POST ||
1574 s->deserialized_state == SERVICE_RUNNING ||
1575 s->deserialized_state == SERVICE_RELOAD ||
1576 s->deserialized_state == SERVICE_STOP ||
1577 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1578 s->deserialized_state == SERVICE_STOP_SIGKILL)
1579 if (s->main_pid > 0)
1580 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1583 if (s->deserialized_state == SERVICE_START_PRE ||
1584 s->deserialized_state == SERVICE_START ||
1585 s->deserialized_state == SERVICE_START_POST ||
1586 s->deserialized_state == SERVICE_RELOAD ||
1587 s->deserialized_state == SERVICE_STOP ||
1588 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1589 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1590 s->deserialized_state == SERVICE_STOP_POST ||
1591 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1592 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1593 if (s->control_pid > 0)
1594 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1597 service_set_state(s, s->deserialized_state);
1603 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1607 unsigned rn_fds = 0;
1608 Set *set, *free_set = NULL;
1615 if (s->socket_fd >= 0)
1618 if (!set_isempty(s->configured_sockets))
1619 set = s->configured_sockets;
1621 if ((r = service_get_sockets(s, &free_set)) < 0)
1627 SET_FOREACH(sock, set, i) {
1631 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1643 if (!(t = new(int, rn_fds+cn_fds))) {
1649 memcpy(t, rfds, rn_fds * sizeof(int));
1650 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1655 rn_fds = rn_fds+cn_fds;
1673 static int service_spawn(
1678 bool apply_permissions,
1680 bool apply_tty_stdin,
1681 bool set_notify_socket,
1686 int *fds = NULL, *fdsbuf = NULL;
1687 unsigned n_fds = 0, n_env = 0;
1688 char **argv = NULL, **final_env = NULL, **our_env = NULL;
1695 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1696 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1697 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1699 if (s->socket_fd >= 0) {
1700 fds = &s->socket_fd;
1703 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1710 if (timeout && s->timeout_usec) {
1711 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1714 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1716 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1721 if (!(our_env = new0(char*, 4))) {
1726 if (set_notify_socket)
1727 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", s->meta.manager->notify_socket) < 0) {
1732 if (s->main_pid > 0)
1733 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1738 if (!(final_env = strv_env_merge(2,
1739 s->meta.manager->environment,
1754 s->meta.manager->confirm_spawn,
1755 s->meta.cgroup_bondings,
1756 s->meta.cgroup_attributes,
1763 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1764 /* FIXME: we need to do something here */
1770 strv_free(final_env);
1780 strv_free(final_env);
1783 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1788 static int main_pid_good(Service *s) {
1791 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1794 /* If we know the pid file, then lets just check if it is
1796 if (s->main_pid_known) {
1798 /* If it's an alien child let's check if it is still
1800 if (s->main_pid_alien)
1801 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1803 /* .. otherwise assume we'll get a SIGCHLD for it,
1804 * which we really should wait for to collect exit
1805 * status and code */
1806 return s->main_pid > 0;
1809 /* We don't know the pid */
1813 static int control_pid_good(Service *s) {
1816 return s->control_pid > 0;
1819 static int cgroup_good(Service *s) {
1824 if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0)
1830 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1837 if (allow_restart &&
1838 !s->forbid_restart &&
1839 (s->restart == SERVICE_RESTART_ALWAYS ||
1840 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure) ||
1841 (s->restart == SERVICE_RESTART_ON_FAILURE && s->failure) ||
1842 (s->restart == SERVICE_RESTART_ON_ABORT && s->failure &&
1843 (s->main_exec_status.code == CLD_KILLED ||
1844 s->main_exec_status.code == CLD_DUMPED)))) {
1846 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1849 service_set_state(s, SERVICE_AUTO_RESTART);
1851 service_set_state(s, s->failure ? SERVICE_FAILED : SERVICE_DEAD);
1853 s->forbid_restart = false;
1858 log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r));
1859 service_enter_dead(s, false, false);
1862 static void service_enter_signal(Service *s, ServiceState state, bool success);
1864 static void service_enter_stop_post(Service *s, bool success) {
1871 service_unwatch_control_pid(s);
1873 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1874 s->control_command_id = SERVICE_EXEC_STOP_POST;
1876 if ((r = service_spawn(s,
1880 !s->permissions_start_only,
1881 !s->root_directory_start_only,
1884 &s->control_pid)) < 0)
1888 service_set_state(s, SERVICE_STOP_POST);
1890 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1895 log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
1896 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1899 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1901 Set *pid_set = NULL;
1902 bool wait_for_exit = false;
1909 if (s->exec_context.kill_mode != KILL_NONE) {
1910 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1912 if (s->main_pid > 0) {
1913 if (kill_and_sigcont(s->main_pid, sig) < 0 && errno != ESRCH)
1914 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1916 wait_for_exit = !s->main_pid_alien;
1919 if (s->control_pid > 0) {
1920 if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
1921 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1923 wait_for_exit = true;
1926 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1928 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1933 /* Exclude the main/control pids from being killed via the cgroup */
1934 if (s->main_pid > 0)
1935 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
1938 if (s->control_pid > 0)
1939 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1942 if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig, true, pid_set)) < 0) {
1943 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1944 log_warning("Failed to kill control group: %s", strerror(-r));
1946 wait_for_exit = true;
1953 if (wait_for_exit) {
1954 if (s->timeout_usec > 0)
1955 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1958 service_set_state(s, state);
1959 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1960 service_enter_stop_post(s, true);
1962 service_enter_dead(s, true, true);
1967 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
1969 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1970 service_enter_stop_post(s, false);
1972 service_enter_dead(s, false, true);
1978 static void service_enter_stop(Service *s, bool success) {
1986 service_unwatch_control_pid(s);
1988 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1989 s->control_command_id = SERVICE_EXEC_STOP;
1991 if ((r = service_spawn(s,
1995 !s->permissions_start_only,
1996 !s->root_directory_start_only,
1999 &s->control_pid)) < 0)
2002 service_set_state(s, SERVICE_STOP);
2004 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2009 log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r));
2010 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2013 static void service_enter_running(Service *s, bool success) {
2014 int main_pid_ok, cgroup_ok;
2020 main_pid_ok = main_pid_good(s);
2021 cgroup_ok = cgroup_good(s);
2023 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2024 (s->bus_name_good || s->type != SERVICE_DBUS))
2025 service_set_state(s, SERVICE_RUNNING);
2026 else if (s->remain_after_exit)
2027 service_set_state(s, SERVICE_EXITED);
2029 service_enter_stop(s, true);
2032 static void service_enter_start_post(Service *s) {
2036 service_unwatch_control_pid(s);
2038 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
2039 s->control_command_id = SERVICE_EXEC_START_POST;
2041 if ((r = service_spawn(s,
2045 !s->permissions_start_only,
2046 !s->root_directory_start_only,
2049 &s->control_pid)) < 0)
2052 service_set_state(s, SERVICE_START_POST);
2054 service_enter_running(s, true);
2059 log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
2060 service_enter_stop(s, false);
2063 static void service_enter_start(Service *s) {
2070 assert(s->exec_command[SERVICE_EXEC_START]);
2071 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2073 if (s->type == SERVICE_FORKING)
2074 service_unwatch_control_pid(s);
2076 service_unwatch_main_pid(s);
2078 if (s->type == SERVICE_FORKING) {
2079 s->control_command_id = SERVICE_EXEC_START;
2080 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2082 s->main_command = NULL;
2084 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2085 s->control_command = NULL;
2087 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2090 if ((r = service_spawn(s,
2092 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
2097 s->notify_access != NOTIFY_NONE,
2101 if (s->type == SERVICE_SIMPLE) {
2102 /* For simple services we immediately start
2103 * the START_POST binaries. */
2105 service_set_main_pid(s, pid);
2106 service_enter_start_post(s);
2108 } else if (s->type == SERVICE_FORKING) {
2110 /* For forking services we wait until the start
2111 * process exited. */
2113 s->control_pid = pid;
2114 service_set_state(s, SERVICE_START);
2116 } else if (s->type == SERVICE_ONESHOT ||
2117 s->type == SERVICE_DBUS ||
2118 s->type == SERVICE_NOTIFY) {
2120 /* For oneshot services we wait until the start
2121 * process exited, too, but it is our main process. */
2123 /* For D-Bus services we know the main pid right away,
2124 * but wait for the bus name to appear on the
2125 * bus. Notify services are similar. */
2127 service_set_main_pid(s, pid);
2128 service_set_state(s, SERVICE_START);
2130 assert_not_reached("Unknown service type");
2135 log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r));
2136 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2139 static void service_enter_start_pre(Service *s) {
2144 service_unwatch_control_pid(s);
2146 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
2147 s->control_command_id = SERVICE_EXEC_START_PRE;
2149 if ((r = service_spawn(s,
2153 !s->permissions_start_only,
2154 !s->root_directory_start_only,
2157 &s->control_pid)) < 0)
2160 service_set_state(s, SERVICE_START_PRE);
2162 service_enter_start(s);
2167 log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
2168 service_enter_dead(s, false, true);
2171 static void service_enter_restart(Service *s) {
2176 dbus_error_init(&error);
2179 log_info("Job pending for unit, delaying automatic restart.");
2181 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
2185 service_enter_dead(s, true, false);
2187 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, &error, NULL)) < 0)
2190 log_debug("%s scheduled restart job.", s->meta.id);
2194 log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r));
2195 service_enter_dead(s, false, false);
2197 dbus_error_free(&error);
2200 static void service_enter_reload(Service *s) {
2205 service_unwatch_control_pid(s);
2207 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
2208 s->control_command_id = SERVICE_EXEC_RELOAD;
2210 if ((r = service_spawn(s,
2214 !s->permissions_start_only,
2215 !s->root_directory_start_only,
2218 &s->control_pid)) < 0)
2221 service_set_state(s, SERVICE_RELOAD);
2223 service_enter_running(s, true);
2228 log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r));
2229 s->reload_failure = true;
2230 service_enter_running(s, true);
2233 static void service_run_next_control(Service *s, bool success) {
2237 assert(s->control_command);
2238 assert(s->control_command->command_next);
2243 assert(s->control_command_id != SERVICE_EXEC_START);
2245 s->control_command = s->control_command->command_next;
2246 service_unwatch_control_pid(s);
2248 if ((r = service_spawn(s,
2252 !s->permissions_start_only,
2253 !s->root_directory_start_only,
2254 s->control_command_id == SERVICE_EXEC_START_PRE ||
2255 s->control_command_id == SERVICE_EXEC_STOP_POST,
2257 &s->control_pid)) < 0)
2263 log_warning("%s failed to run next control task: %s", s->meta.id, strerror(-r));
2265 if (s->state == SERVICE_START_PRE)
2266 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2267 else if (s->state == SERVICE_STOP)
2268 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2269 else if (s->state == SERVICE_STOP_POST)
2270 service_enter_dead(s, false, true);
2271 else if (s->state == SERVICE_RELOAD) {
2272 s->reload_failure = true;
2273 service_enter_running(s, true);
2275 service_enter_stop(s, false);
2278 static void service_run_next_main(Service *s, bool success) {
2283 assert(s->main_command);
2284 assert(s->main_command->command_next);
2285 assert(s->type == SERVICE_ONESHOT);
2290 s->main_command = s->main_command->command_next;
2291 service_unwatch_main_pid(s);
2293 if ((r = service_spawn(s,
2300 s->notify_access != NOTIFY_NONE,
2304 service_set_main_pid(s, pid);
2309 log_warning("%s failed to run next main task: %s", s->meta.id, strerror(-r));
2310 service_enter_stop(s, false);
2313 static int service_start(Unit *u) {
2314 Service *s = SERVICE(u);
2318 /* We cannot fulfill this request right now, try again later
2320 if (s->state == SERVICE_STOP ||
2321 s->state == SERVICE_STOP_SIGTERM ||
2322 s->state == SERVICE_STOP_SIGKILL ||
2323 s->state == SERVICE_STOP_POST ||
2324 s->state == SERVICE_FINAL_SIGTERM ||
2325 s->state == SERVICE_FINAL_SIGKILL)
2328 /* Already on it! */
2329 if (s->state == SERVICE_START_PRE ||
2330 s->state == SERVICE_START ||
2331 s->state == SERVICE_START_POST)
2334 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED || s->state == SERVICE_AUTO_RESTART);
2336 /* Make sure we don't enter a busy loop of some kind. */
2337 if (!ratelimit_test(&s->ratelimit)) {
2338 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
2343 s->main_pid_known = false;
2344 s->main_pid_alien = false;
2345 s->forbid_restart = false;
2347 service_enter_start_pre(s);
2351 static int service_stop(Unit *u) {
2352 Service *s = SERVICE(u);
2356 /* This is a user request, so don't do restarts on this
2358 s->forbid_restart = true;
2361 if (s->state == SERVICE_STOP ||
2362 s->state == SERVICE_STOP_SIGTERM ||
2363 s->state == SERVICE_STOP_SIGKILL ||
2364 s->state == SERVICE_STOP_POST ||
2365 s->state == SERVICE_FINAL_SIGTERM ||
2366 s->state == SERVICE_FINAL_SIGKILL)
2369 /* Don't allow a restart */
2370 if (s->state == SERVICE_AUTO_RESTART) {
2371 service_set_state(s, SERVICE_DEAD);
2375 /* If there's already something running we go directly into
2377 if (s->state == SERVICE_START_PRE ||
2378 s->state == SERVICE_START ||
2379 s->state == SERVICE_START_POST ||
2380 s->state == SERVICE_RELOAD) {
2381 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2385 assert(s->state == SERVICE_RUNNING ||
2386 s->state == SERVICE_EXITED);
2388 service_enter_stop(s, true);
2392 static int service_reload(Unit *u) {
2393 Service *s = SERVICE(u);
2397 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2399 service_enter_reload(s);
2403 static bool service_can_reload(Unit *u) {
2404 Service *s = SERVICE(u);
2408 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2411 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2412 Service *s = SERVICE(u);
2418 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2419 unit_serialize_item(u, f, "failure", yes_no(s->failure));
2421 if (s->control_pid > 0)
2422 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2424 if (s->main_pid_known && s->main_pid > 0)
2425 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2427 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2430 unit_serialize_item(u, f, "status-text", s->status_text);
2432 /* There's a minor uncleanliness here: if there are multiple
2433 * commands attached here, we will start from the first one
2435 if (s->control_command_id >= 0)
2436 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2438 if (s->socket_fd >= 0) {
2441 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2444 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2447 if (s->main_exec_status.pid > 0) {
2448 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2449 dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp);
2450 dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp);
2452 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2453 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2454 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2461 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2462 Service *s = SERVICE(u);
2469 if (streq(key, "state")) {
2472 if ((state = service_state_from_string(value)) < 0)
2473 log_debug("Failed to parse state value %s", value);
2475 s->deserialized_state = state;
2476 } else if (streq(key, "failure")) {
2479 if ((b = parse_boolean(value)) < 0)
2480 log_debug("Failed to parse failure value %s", value);
2482 s->failure = b || s->failure;
2483 } else if (streq(key, "control-pid")) {
2486 if (parse_pid(value, &pid) < 0)
2487 log_debug("Failed to parse control-pid value %s", value);
2489 s->control_pid = pid;
2490 } else if (streq(key, "main-pid")) {
2493 if (parse_pid(value, &pid) < 0)
2494 log_debug("Failed to parse main-pid value %s", value);
2496 service_set_main_pid(s, (pid_t) pid);
2497 } else if (streq(key, "main-pid-known")) {
2500 if ((b = parse_boolean(value)) < 0)
2501 log_debug("Failed to parse main-pid-known value %s", value);
2503 s->main_pid_known = b;
2504 } else if (streq(key, "status-text")) {
2507 if ((t = strdup(value))) {
2508 free(s->status_text);
2512 } else if (streq(key, "control-command")) {
2513 ServiceExecCommand id;
2515 if ((id = service_exec_command_from_string(value)) < 0)
2516 log_debug("Failed to parse exec-command value %s", value);
2518 s->control_command_id = id;
2519 s->control_command = s->exec_command[id];
2521 } else if (streq(key, "socket-fd")) {
2524 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2525 log_debug("Failed to parse socket-fd value %s", value);
2528 if (s->socket_fd >= 0)
2529 close_nointr_nofail(s->socket_fd);
2530 s->socket_fd = fdset_remove(fds, fd);
2532 } else if (streq(key, "main-exec-status-pid")) {
2535 if (parse_pid(value, &pid) < 0)
2536 log_debug("Failed to parse main-exec-status-pid value %s", value);
2538 s->main_exec_status.pid = pid;
2539 } else if (streq(key, "main-exec-status-code")) {
2542 if (safe_atoi(value, &i) < 0)
2543 log_debug("Failed to parse main-exec-status-code value %s", value);
2545 s->main_exec_status.code = i;
2546 } else if (streq(key, "main-exec-status-status")) {
2549 if (safe_atoi(value, &i) < 0)
2550 log_debug("Failed to parse main-exec-status-status value %s", value);
2552 s->main_exec_status.status = i;
2553 } else if (streq(key, "main-exec-status-start"))
2554 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2555 else if (streq(key, "main-exec-status-exit"))
2556 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2558 log_debug("Unknown serialization key '%s'", key);
2563 static UnitActiveState service_active_state(Unit *u) {
2566 return state_translation_table[SERVICE(u)->state];
2569 static const char *service_sub_state_to_string(Unit *u) {
2572 return service_state_to_string(SERVICE(u)->state);
2575 static bool service_check_gc(Unit *u) {
2576 Service *s = SERVICE(u);
2580 /* Never clean up services that still have a process around,
2581 * even if the service is formally dead. */
2582 if (cgroup_good(s) > 0 ||
2583 main_pid_good(s) > 0 ||
2584 control_pid_good(s) > 0)
2587 #ifdef HAVE_SYSV_COMPAT
2595 static bool service_check_snapshot(Unit *u) {
2596 Service *s = SERVICE(u);
2600 return !s->got_socket_fd;
2603 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2604 Service *s = SERVICE(u);
2610 if (!s->meta.fragment_path)
2611 success = is_clean_exit_lsb(code, status);
2613 success = is_clean_exit(code, status);
2615 if (s->main_pid == pid) {
2616 /* Forking services may occasionally move to a new PID.
2617 * As long as they update the PID file before exiting the old
2618 * PID, they're fine. */
2619 if (service_load_pid_file(s, false) == 0)
2623 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2625 /* If this is not a forking service than the main
2626 * process got started and hence we copy the exit
2627 * status so that it is recorded both as main and as
2628 * control process exit status */
2629 if (s->main_command) {
2630 s->main_command->exec_status = s->main_exec_status;
2632 if (s->main_command->ignore)
2636 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2637 "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
2638 s->failure = s->failure || !success;
2640 if (s->main_command &&
2641 s->main_command->command_next &&
2644 /* There is another command to *
2645 * execute, so let's do that. */
2647 log_debug("%s running next main command for state %s", u->meta.id, service_state_to_string(s->state));
2648 service_run_next_main(s, success);
2652 /* The service exited, so the service is officially
2654 s->main_command = NULL;
2658 case SERVICE_START_POST:
2659 case SERVICE_RELOAD:
2661 /* Need to wait until the operation is
2666 if (s->type == SERVICE_ONESHOT) {
2667 /* This was our main goal, so let's go on */
2669 service_enter_start_post(s);
2671 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2674 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2679 case SERVICE_RUNNING:
2680 service_enter_running(s, success);
2683 case SERVICE_STOP_SIGTERM:
2684 case SERVICE_STOP_SIGKILL:
2686 if (!control_pid_good(s))
2687 service_enter_stop_post(s, success);
2689 /* If there is still a control process, wait for that first */
2693 assert_not_reached("Uh, main process died at wrong time.");
2697 } else if (s->control_pid == pid) {
2701 if (s->control_command) {
2702 exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
2704 if (s->control_command->ignore)
2708 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2709 "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
2710 s->failure = s->failure || !success;
2712 if (s->control_command &&
2713 s->control_command->command_next &&
2716 /* There is another command to *
2717 * execute, so let's do that. */
2719 log_debug("%s running next control command for state %s", u->meta.id, service_state_to_string(s->state));
2720 service_run_next_control(s, success);
2723 /* No further commands for this step, so let's
2724 * figure out what to do next */
2726 s->control_command = NULL;
2727 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2729 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2733 case SERVICE_START_PRE:
2735 service_enter_start(s);
2737 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2741 assert(s->type == SERVICE_FORKING);
2743 /* Let's try to load the pid
2744 * file here if we can. We
2745 * ignore the return value,
2746 * since the PID file might
2747 * actually be created by a
2748 * START_POST script */
2751 service_load_pid_file(s, !s->exec_command[SERVICE_EXEC_START_POST]);
2752 service_search_main_pid(s);
2754 service_enter_start_post(s);
2756 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2760 case SERVICE_START_POST:
2762 service_load_pid_file(s, true);
2763 service_search_main_pid(s);
2766 s->reload_failure = !success;
2767 service_enter_running(s, true);
2770 case SERVICE_RELOAD:
2772 service_load_pid_file(s, true);
2773 service_search_main_pid(s);
2776 s->reload_failure = !success;
2777 service_enter_running(s, true);
2781 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2784 case SERVICE_STOP_SIGTERM:
2785 case SERVICE_STOP_SIGKILL:
2786 if (main_pid_good(s) <= 0)
2787 service_enter_stop_post(s, success);
2789 /* If there is still a service
2790 * process around, wait until
2791 * that one quit, too */
2794 case SERVICE_STOP_POST:
2795 case SERVICE_FINAL_SIGTERM:
2796 case SERVICE_FINAL_SIGKILL:
2797 service_enter_dead(s, success, true);
2801 assert_not_reached("Uh, control process died at wrong time.");
2806 /* Notify clients about changed exit status */
2807 unit_add_to_dbus_queue(u);
2810 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2811 Service *s = SERVICE(u);
2814 assert(elapsed == 1);
2816 assert(w == &s->timer_watch);
2820 case SERVICE_START_PRE:
2822 log_warning("%s operation timed out. Terminating.", u->meta.id);
2823 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2826 case SERVICE_START_POST:
2827 log_warning("%s operation timed out. Stopping.", u->meta.id);
2828 service_enter_stop(s, false);
2831 case SERVICE_RELOAD:
2832 log_warning("%s operation timed out. Stopping.", u->meta.id);
2833 s->reload_failure = true;
2834 service_enter_running(s, true);
2838 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2839 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2842 case SERVICE_STOP_SIGTERM:
2843 if (s->exec_context.send_sigkill) {
2844 log_warning("%s stopping timed out. Killing.", u->meta.id);
2845 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2847 log_warning("%s stopping timed out. Skipping SIGKILL.", u->meta.id);
2848 service_enter_stop_post(s, false);
2853 case SERVICE_STOP_SIGKILL:
2854 /* Uh, we sent a SIGKILL and it is still not gone?
2855 * Must be something we cannot kill, so let's just be
2856 * weirded out and continue */
2858 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2859 service_enter_stop_post(s, false);
2862 case SERVICE_STOP_POST:
2863 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2864 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2867 case SERVICE_FINAL_SIGTERM:
2868 if (s->exec_context.send_sigkill) {
2869 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2870 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2872 log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->meta.id);
2873 service_enter_dead(s, false, true);
2878 case SERVICE_FINAL_SIGKILL:
2879 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->meta.id);
2880 service_enter_dead(s, false, true);
2883 case SERVICE_AUTO_RESTART:
2884 log_info("%s holdoff time over, scheduling restart.", u->meta.id);
2885 service_enter_restart(s);
2889 assert_not_reached("Timeout at wrong time.");
2893 static void service_cgroup_notify_event(Unit *u) {
2894 Service *s = SERVICE(u);
2898 log_debug("%s: cgroup is empty", u->meta.id);
2902 /* Waiting for SIGCHLD is usually more interesting,
2903 * because it includes return codes/signals. Which is
2904 * why we ignore the cgroup events for most cases,
2905 * except when we don't know pid which to expect the
2908 case SERVICE_RUNNING:
2909 service_enter_running(s, true);
2912 case SERVICE_STOP_SIGTERM:
2913 case SERVICE_STOP_SIGKILL:
2915 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2916 service_enter_stop_post(s, true);
2920 case SERVICE_FINAL_SIGTERM:
2921 case SERVICE_FINAL_SIGKILL:
2922 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2923 service_enter_dead(s, true, true);
2932 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
2933 Service *s = SERVICE(u);
2938 if (s->notify_access == NOTIFY_NONE) {
2939 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
2940 u->meta.id, (unsigned long) pid);
2944 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
2945 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
2946 u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
2950 log_debug("%s: Got message", u->meta.id);
2952 /* Interpret MAINPID= */
2953 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2954 (s->state == SERVICE_START ||
2955 s->state == SERVICE_START_POST ||
2956 s->state == SERVICE_RUNNING ||
2957 s->state == SERVICE_RELOAD)) {
2959 if (parse_pid(e + 8, &pid) < 0)
2960 log_warning("Failed to parse notification message %s", e);
2962 log_debug("%s: got %s", u->meta.id, e);
2963 service_set_main_pid(s, pid);
2967 /* Interpret READY= */
2968 if (s->type == SERVICE_NOTIFY &&
2969 s->state == SERVICE_START &&
2970 strv_find(tags, "READY=1")) {
2971 log_debug("%s: got READY=1", u->meta.id);
2973 service_enter_start_post(s);
2976 /* Interpret STATUS= */
2977 if ((e = strv_find_prefix(tags, "STATUS="))) {
2981 if (!(t = strdup(e+7))) {
2982 log_error("Failed to allocate string.");
2986 log_debug("%s: got %s", u->meta.id, e);
2988 free(s->status_text);
2991 free(s->status_text);
2992 s->status_text = NULL;
2997 /* Notify clients about changed status or main pid */
2998 unit_add_to_dbus_queue(u);
3001 #ifdef HAVE_SYSV_COMPAT
3004 static void sysv_facility_in_insserv_conf(Manager *mgr) {
3008 if (!(f = fopen("/etc/insserv.conf", "re"))) {
3009 r = errno == ENOENT ? 0 : -errno;
3014 char l[LINE_MAX], *t;
3015 char **parsed = NULL;
3017 if (!fgets(l, sizeof(l), f)) {
3022 log_error("Failed to read configuration file '/etc/insserv.conf': %s", strerror(-r));
3027 if (*t != '$' && *t != '<')
3030 parsed = strv_split(t,WHITESPACE);
3031 /* we ignore <interactive>, not used, equivalent to X-Interactive */
3032 if (parsed && !startswith_no_case (parsed[0], "<interactive>")) {
3035 if (sysv_translate_facility(parsed[0], NULL, &facility) < 0)
3037 if ((u = manager_get_unit(mgr, facility)) && (u->meta.type == UNIT_TARGET)) {
3039 char *dep = NULL, *name, **j;
3041 STRV_FOREACH (j, parsed+1) {
3050 if (sysv_translate_facility(name, NULL, &dep) < 0)
3053 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, e, dep, NULL, true);
3068 static int service_enumerate(Manager *m) {
3072 char *path = NULL, *fpath = NULL, *name = NULL;
3073 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
3080 if (m->running_as != MANAGER_SYSTEM)
3083 zero(runlevel_services);
3085 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3086 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3090 path = join(*p, "/", rcnd_table[i].path, NULL);
3099 if (!(d = opendir(path))) {
3100 if (errno != ENOENT)
3101 log_warning("opendir() failed on %s: %s", path, strerror(errno));
3106 while ((de = readdir(d))) {
3109 if (ignore_file(de->d_name))
3112 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3115 if (strlen(de->d_name) < 4)
3118 a = undecchar(de->d_name[1]);
3119 b = undecchar(de->d_name[2]);
3125 fpath = join(path, "/", de->d_name, NULL);
3131 if (access(fpath, X_OK) < 0) {
3133 if (errno != ENOENT)
3134 log_warning("access() failed on %s: %s", fpath, strerror(errno));
3140 if (!(name = sysv_translate_name(de->d_name + 3))) {
3145 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
3146 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3150 if (de->d_name[0] == 'S') {
3152 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
3153 SERVICE(service)->sysv_start_priority_from_rcnd =
3154 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3156 SERVICE(service)->sysv_enabled = true;
3159 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
3162 if ((r = set_put(runlevel_services[i], service)) < 0)
3165 } else if (de->d_name[0] == 'K' &&
3166 (rcnd_table[i].type == RUNLEVEL_DOWN ||
3167 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
3169 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
3172 if ((r = set_put(shutdown_services, service)) < 0)
3178 /* Now we loaded all stubs and are aware of the lowest
3179 start-up priority for all services, not let's actually load
3180 the services, this will also tell us which services are
3181 actually native now */
3182 manager_dispatch_load_queue(m);
3184 /* If this is a native service, rely on native ways to pull in
3185 * a service, don't pull it in via sysv rcN.d links. */
3186 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3187 SET_FOREACH(service, runlevel_services[i], j) {
3188 service = unit_follow_merge(service);
3190 if (service->meta.fragment_path)
3193 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3197 /* We honour K links only for halt/reboot. For the normal
3198 * runlevels we assume the stop jobs will be implicitly added
3199 * by the core logic. Also, we don't really distinguish here
3200 * between the runlevels 0 and 6 and just add them to the
3201 * special shutdown target. On SUSE the boot.d/ runlevel is
3202 * also used for shutdown, so we add links for that too to the
3203 * shutdown target.*/
3204 SET_FOREACH(service, shutdown_services, j) {
3205 service = unit_follow_merge(service);
3207 if (service->meta.fragment_path)
3210 if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
3217 sysv_facility_in_insserv_conf (m);
3225 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3226 set_free(runlevel_services[i]);
3227 set_free(shutdown_services);
3236 static void service_bus_name_owner_change(
3239 const char *old_owner,
3240 const char *new_owner) {
3242 Service *s = SERVICE(u);
3247 assert(streq(s->bus_name, name));
3248 assert(old_owner || new_owner);
3250 if (old_owner && new_owner)
3251 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
3253 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
3255 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
3257 s->bus_name_good = !!new_owner;
3259 if (s->type == SERVICE_DBUS) {
3261 /* service_enter_running() will figure out what to
3263 if (s->state == SERVICE_RUNNING)
3264 service_enter_running(s, true);
3265 else if (s->state == SERVICE_START && new_owner)
3266 service_enter_start_post(s);
3268 } else if (new_owner &&
3270 (s->state == SERVICE_START ||
3271 s->state == SERVICE_START_POST ||
3272 s->state == SERVICE_RUNNING ||
3273 s->state == SERVICE_RELOAD)) {
3275 /* Try to acquire PID from bus service */
3276 log_debug("Trying to acquire PID from D-Bus name...");
3278 bus_query_pid(u->meta.manager, name);
3282 static void service_bus_query_pid_done(
3287 Service *s = SERVICE(u);
3292 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
3294 if (s->main_pid <= 0 &&
3295 (s->state == SERVICE_START ||
3296 s->state == SERVICE_START_POST ||
3297 s->state == SERVICE_RUNNING ||
3298 s->state == SERVICE_RELOAD))
3299 service_set_main_pid(s, pid);
3302 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3306 /* This is called by the socket code when instantiating a new
3307 * service for a stream socket and the socket needs to be
3310 if (s->meta.load_state != UNIT_LOADED)
3313 if (s->socket_fd >= 0)
3316 if (s->state != SERVICE_DEAD)
3320 s->got_socket_fd = true;
3321 s->accept_socket = sock;
3326 static void service_reset_failed(Unit *u) {
3327 Service *s = SERVICE(u);
3331 if (s->state == SERVICE_FAILED)
3332 service_set_state(s, SERVICE_DEAD);
3337 static bool service_need_daemon_reload(Unit *u) {
3338 Service *s = SERVICE(u);
3342 #ifdef HAVE_SYSV_COMPAT
3347 if (stat(s->sysv_path, &st) < 0)
3348 /* What, cannot access this anymore? */
3351 if (s->sysv_mtime > 0 &&
3352 timespec_load(&st.st_mtim) != s->sysv_mtime)
3360 static int service_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
3361 Service *s = SERVICE(u);
3363 Set *pid_set = NULL;
3367 if (s->main_pid <= 0 && who == KILL_MAIN) {
3368 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
3372 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3373 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
3377 if (who == KILL_CONTROL || who == KILL_ALL)
3378 if (s->control_pid > 0)
3379 if (kill(s->control_pid, signo) < 0)
3382 if (who == KILL_MAIN || who == KILL_ALL)
3383 if (s->main_pid > 0)
3384 if (kill(s->main_pid, signo) < 0)
3387 if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
3390 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
3393 /* Exclude the control/main pid from being killed via the cgroup */
3394 if (s->control_pid > 0)
3395 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
3400 if (s->main_pid > 0)
3401 if ((q = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) {
3406 if ((q = cgroup_bonding_kill_list(s->meta.cgroup_bondings, signo, false, pid_set)) < 0)
3407 if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
3418 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3419 [SERVICE_DEAD] = "dead",
3420 [SERVICE_START_PRE] = "start-pre",
3421 [SERVICE_START] = "start",
3422 [SERVICE_START_POST] = "start-post",
3423 [SERVICE_RUNNING] = "running",
3424 [SERVICE_EXITED] = "exited",
3425 [SERVICE_RELOAD] = "reload",
3426 [SERVICE_STOP] = "stop",
3427 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3428 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3429 [SERVICE_STOP_POST] = "stop-post",
3430 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3431 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3432 [SERVICE_FAILED] = "failed",
3433 [SERVICE_AUTO_RESTART] = "auto-restart",
3436 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3438 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3439 [SERVICE_RESTART_NO] = "no",
3440 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3441 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3442 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3443 [SERVICE_RESTART_ALWAYS] = "always"
3446 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3448 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3449 [SERVICE_SIMPLE] = "simple",
3450 [SERVICE_FORKING] = "forking",
3451 [SERVICE_ONESHOT] = "oneshot",
3452 [SERVICE_DBUS] = "dbus",
3453 [SERVICE_NOTIFY] = "notify"
3456 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3458 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3459 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3460 [SERVICE_EXEC_START] = "ExecStart",
3461 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3462 [SERVICE_EXEC_RELOAD] = "ExecReload",
3463 [SERVICE_EXEC_STOP] = "ExecStop",
3464 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3467 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3469 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3470 [NOTIFY_NONE] = "none",
3471 [NOTIFY_MAIN] = "main",
3472 [NOTIFY_ALL] = "all"
3475 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3477 const UnitVTable service_vtable = {
3478 .suffix = ".service",
3483 .show_status = true,
3485 .init = service_init,
3486 .done = service_done,
3487 .load = service_load,
3489 .coldplug = service_coldplug,
3491 .dump = service_dump,
3493 .start = service_start,
3494 .stop = service_stop,
3495 .reload = service_reload,
3497 .can_reload = service_can_reload,
3499 .kill = service_kill,
3501 .serialize = service_serialize,
3502 .deserialize_item = service_deserialize_item,
3504 .active_state = service_active_state,
3505 .sub_state_to_string = service_sub_state_to_string,
3507 .check_gc = service_check_gc,
3508 .check_snapshot = service_check_snapshot,
3510 .sigchld_event = service_sigchld_event,
3511 .timer_event = service_timer_event,
3513 .reset_failed = service_reset_failed,
3515 .need_daemon_reload = service_need_daemon_reload,
3517 .cgroup_notify_empty = service_cgroup_notify_event,
3518 .notify_message = service_notify_message,
3520 .bus_name_owner_change = service_bus_name_owner_change,
3521 .bus_query_pid_done = service_bus_query_pid_done,
3523 .bus_interface = "org.freedesktop.systemd1.Service",
3524 .bus_message_handler = bus_service_message_handler,
3525 .bus_invalidating_properties = bus_service_invalidating_properties,
3527 #ifdef HAVE_SYSV_COMPAT
3528 .enumerate = service_enumerate