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 #if defined(TARGET_MANDRIVA) || defined(TARGET_MAGEIA)
282 /* Due to unfortunate name selection in Mandriva,
283 * $network is provided by network-up which is ordered
284 * after network which actually starts interfaces.
285 * To break the loop, just ignore it */
286 "network", SPECIAL_NETWORK_TARGET,
288 "named", SPECIAL_NSS_LOOKUP_TARGET,
289 "portmap", SPECIAL_RPCBIND_TARGET,
290 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
291 "syslog", SPECIAL_SYSLOG_TARGET,
292 "time", SPECIAL_TIME_SYNC_TARGET,
294 /* common extensions */
295 "mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
296 "x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE,
299 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
300 "mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
304 "MTA", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
305 "smtpdaemon", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
306 "httpd", SPECIAL_HTTP_DAEMON_TARGET,
310 "smtp", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
321 n = *name == '$' ? name + 1 : name;
323 for (i = 0; i < ELEMENTSOF(table); i += 2) {
325 if (!streq(table[i], n))
331 if (!(r = strdup(table[i+1])))
337 /* If we don't know this name, fallback heuristics to figure
338 * out whether something is a target or a service alias. */
341 if (!unit_prefix_is_valid(n))
344 /* Facilities starting with $ are most likely targets */
345 r = unit_name_build(n, NULL, ".target");
346 } else if (filename && streq(name, filename))
347 /* Names equaling the file name of the services are redundant */
350 /* Everything else we assume to be normal service names */
351 r = sysv_translate_name(n);
362 static int sysv_fix_order(Service *s) {
368 if (s->sysv_start_priority < 0)
371 /* For each pair of services where at least one lacks a LSB
372 * header, we use the start priority value to order things. */
374 LIST_FOREACH(units_by_type, other, s->meta.manager->units_by_type[UNIT_SERVICE]) {
377 bool special_s, special_t;
379 t = (Service*) other;
384 if (t->meta.load_state != UNIT_LOADED)
387 if (t->sysv_start_priority < 0)
390 /* If both units have modern headers we don't care
391 * about the priorities */
392 if ((s->meta.fragment_path || s->sysv_has_lsb) &&
393 (t->meta.fragment_path || t->sysv_has_lsb))
396 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
397 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
399 if (special_t && !special_s)
401 else if (special_s && !special_t)
403 else if (t->sysv_start_priority < s->sysv_start_priority)
405 else if (t->sysv_start_priority > s->sysv_start_priority)
410 /* FIXME: Maybe we should compare the name here lexicographically? */
412 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
419 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
422 if (!(c = new0(ExecCommand, 1)))
425 if (!(c->path = strdup(path))) {
430 if (!(c->argv = strv_new(path, arg1, NULL))) {
439 static int sysv_exec_commands(Service *s) {
443 assert(s->sysv_path);
445 if (!(c = exec_command_new(s->sysv_path, "start")))
447 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
449 if (!(c = exec_command_new(s->sysv_path, "stop")))
451 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
453 if (!(c = exec_command_new(s->sysv_path, "reload")))
455 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
460 static int service_load_sysv_path(Service *s, const char *path) {
471 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
479 if (!(f = fopen(path, "re"))) {
480 r = errno == ENOENT ? 0 : -errno;
485 if (fstat(fileno(f), &st) < 0) {
491 if (!(s->sysv_path = strdup(path))) {
496 s->sysv_mtime = timespec_load(&st.st_mtim);
498 if (null_or_empty(&st)) {
499 u->meta.load_state = UNIT_MASKED;
505 char l[LINE_MAX], *t;
507 if (!fgets(l, sizeof(l), f)) {
512 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
522 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
524 s->sysv_has_lsb = true;
528 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
534 t += strspn(t, WHITESPACE);
536 if (state == NORMAL) {
538 /* Try to parse Red Hat style chkconfig headers */
540 if (startswith_no_case(t, "chkconfig:")) {
542 char runlevels[16], *k;
546 if (sscanf(t+10, "%15s %i %*i",
548 &start_priority) != 2) {
550 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
554 /* A start priority gathered from the
555 * symlink farms is preferred over the
556 * data from the LSB header. */
557 if (start_priority < 0 || start_priority > 99)
558 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
560 s->sysv_start_priority = start_priority;
562 char_array_0(runlevels);
563 k = delete_chars(runlevels, WHITESPACE "-");
568 if (!(d = strdup(k))) {
573 free(s->sysv_runlevels);
574 s->sysv_runlevels = d;
577 } else if (startswith_no_case(t, "description:")) {
579 size_t k = strlen(t);
583 if (t[k-1] == '\\') {
588 if ((j = strstrip(t+12)) && *j) {
589 if (!(d = strdup(j))) {
596 free(chkconfig_description);
597 chkconfig_description = d;
599 } else if (startswith_no_case(t, "pidfile:")) {
606 if (!path_is_absolute(fn)) {
607 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
611 if (!(fn = strdup(fn))) {
620 } else if (state == DESCRIPTION) {
622 /* Try to parse Red Hat style description
625 size_t k = strlen(t);
633 if ((j = strstrip(t)) && *j) {
636 if (chkconfig_description)
637 d = join(chkconfig_description, " ", j, NULL);
646 free(chkconfig_description);
647 chkconfig_description = d;
650 } else if (state == LSB || state == LSB_DESCRIPTION) {
652 if (startswith_no_case(t, "Provides:")) {
658 FOREACH_WORD_QUOTED(w, z, t+9, i) {
661 if (!(n = strndup(w, z))) {
666 r = sysv_translate_facility(n, file_name_from_path(path), &m);
675 if (unit_name_to_type(m) == UNIT_SERVICE)
676 r = unit_add_name(u, m);
683 * indication that the
685 * now available. This
688 * targets do NOT pull
691 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true);
694 log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
699 } else if (startswith_no_case(t, "Required-Start:") ||
700 startswith_no_case(t, "Should-Start:") ||
701 startswith_no_case(t, "X-Start-Before:") ||
702 startswith_no_case(t, "X-Start-After:")) {
708 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
711 if (!(n = strndup(w, z))) {
716 r = sysv_translate_facility(n, file_name_from_path(path), &m);
719 log_error("[%s:%u] Failed to translate LSB dependency %s, ignoring: %s", path, line, n, strerror(-r));
729 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
732 log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
736 } else if (startswith_no_case(t, "Default-Start:")) {
741 k = delete_chars(t+14, WHITESPACE "-");
744 if (!(d = strdup(k))) {
749 free(s->sysv_runlevels);
750 s->sysv_runlevels = d;
753 } else if (startswith_no_case(t, "Description:")) {
756 state = LSB_DESCRIPTION;
758 if ((j = strstrip(t+12)) && *j) {
759 if (!(d = strdup(j))) {
766 free(long_description);
767 long_description = d;
769 } else if (startswith_no_case(t, "Short-Description:")) {
774 if ((j = strstrip(t+18)) && *j) {
775 if (!(d = strdup(j))) {
782 free(short_description);
783 short_description = d;
785 } else if (state == LSB_DESCRIPTION) {
787 if (startswith(l, "#\t") || startswith(l, "# ")) {
790 if ((j = strstrip(t)) && *j) {
793 if (long_description)
794 d = join(long_description, " ", t, NULL);
803 free(long_description);
804 long_description = d;
813 if ((r = sysv_exec_commands(s)) < 0)
815 if (s->sysv_runlevels &&
816 chars_intersect(RUNLEVELS_BOOT, s->sysv_runlevels) &&
817 chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
818 /* Service has both boot and "up" runlevels
819 configured. Kill the "up" ones. */
820 delete_chars(s->sysv_runlevels, RUNLEVELS_UP);
823 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
824 /* If there a runlevels configured for this service
825 * but none of the standard ones, then we assume this
826 * is some special kind of service (which might be
827 * needed for early boot) and don't create any links
830 s->meta.default_dependencies = false;
832 /* Don't timeout special services during boot (like fsck) */
835 s->timeout_usec = DEFAULT_SYSV_TIMEOUT_USEC;
837 /* Special setting for all SysV services */
838 s->type = SERVICE_FORKING;
839 s->remain_after_exit = !s->pid_file;
840 s->guess_main_pid = false;
841 s->restart = SERVICE_RESTART_NO;
843 if (s->meta.manager->sysv_console)
844 s->exec_context.std_output = EXEC_OUTPUT_TTY;
846 s->exec_context.kill_mode = KILL_PROCESS;
848 /* We use the long description only if
849 * no short description is set. */
851 if (short_description)
852 description = short_description;
853 else if (chkconfig_description)
854 description = chkconfig_description;
855 else if (long_description)
856 description = long_description;
863 if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
868 u->meta.description = d;
871 /* The priority that has been set in /etc/rcN.d/ hierarchies
872 * takes precedence over what is stored as default in the LSB
874 if (s->sysv_start_priority_from_rcnd >= 0)
875 s->sysv_start_priority = s->sysv_start_priority_from_rcnd;
877 u->meta.load_state = UNIT_LOADED;
885 free(short_description);
886 free(long_description);
887 free(chkconfig_description);
892 static int service_load_sysv_name(Service *s, const char *name) {
898 /* For SysV services we strip the boot.*, rc.* and *.sh
899 * prefixes/suffixes. */
900 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
901 if (endswith(name, ".sh.service"))
906 if (startswith(name, "boot."))
910 #ifdef TARGET_FRUGALWARE
911 if (startswith(name, "rc."))
915 STRV_FOREACH(p, s->meta.manager->lookup_paths.sysvinit_path) {
919 path = join(*p, "/", name, NULL);
923 assert(endswith(path, ".service"));
924 path[strlen(path)-8] = 0;
926 r = service_load_sysv_path(s, path);
928 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
929 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
930 /* Try Debian style *.sh source'able init scripts */
932 r = service_load_sysv_path(s, path);
938 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
939 /* Try SUSE style boot.* init scripts */
941 path = join(*p, "/boot.", name, NULL);
945 /* Drop .service suffix */
946 path[strlen(path)-8] = 0;
947 r = service_load_sysv_path(s, path);
952 #ifdef TARGET_FRUGALWARE
953 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
954 /* Try Frugalware style rc.* init scripts */
956 path = join(*p, "/rc.", name, NULL);
960 /* Drop .service suffix */
961 path[strlen(path)-8] = 0;
962 r = service_load_sysv_path(s, path);
970 if ((s->meta.load_state != UNIT_STUB))
977 static int service_load_sysv(Service *s) {
984 /* Load service data from SysV init scripts, preferably with
987 if (strv_isempty(s->meta.manager->lookup_paths.sysvinit_path))
990 if ((t = s->meta.id))
991 if ((r = service_load_sysv_name(s, t)) < 0)
994 if (s->meta.load_state == UNIT_STUB)
995 SET_FOREACH(t, s->meta.names, i) {
999 if ((r = service_load_sysv_name(s, t)) < 0)
1002 if (s->meta.load_state != UNIT_STUB)
1010 static int fsck_fix_order(Service *s) {
1016 if (s->fsck_passno <= 0)
1019 /* For each pair of services where both have an fsck priority
1020 * we order things based on it. */
1022 LIST_FOREACH(units_by_type, other, s->meta.manager->units_by_type[UNIT_SERVICE]) {
1026 t = (Service*) other;
1031 if (t->meta.load_state != UNIT_LOADED)
1034 if (t->fsck_passno <= 0)
1037 if (t->fsck_passno < s->fsck_passno)
1039 else if (t->fsck_passno > s->fsck_passno)
1044 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
1051 static int service_verify(Service *s) {
1054 if (s->meta.load_state != UNIT_LOADED)
1057 if (!s->exec_command[SERVICE_EXEC_START]) {
1058 log_error("%s lacks ExecStart setting. Refusing.", s->meta.id);
1062 if (s->type != SERVICE_ONESHOT &&
1063 s->exec_command[SERVICE_EXEC_START]->command_next) {
1064 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", s->meta.id);
1068 if (s->type == SERVICE_ONESHOT &&
1069 s->exec_command[SERVICE_EXEC_RELOAD]) {
1070 log_error("%s has an ExecReload setting, which is not allowed for Type=oneshot services. Refusing.", s->meta.id);
1074 if (s->type == SERVICE_DBUS && !s->bus_name) {
1075 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", s->meta.id);
1079 if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
1080 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
1087 static int service_add_default_dependencies(Service *s) {
1092 /* Add a number of automatic dependencies useful for the
1093 * majority of services. */
1095 /* First, pull in base system */
1096 if (s->meta.manager->running_as == MANAGER_SYSTEM) {
1098 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
1101 } else if (s->meta.manager->running_as == MANAGER_USER) {
1103 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
1107 /* Second, activate normal shutdown */
1108 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
1111 static void service_fix_output(Service *s) {
1114 /* If nothing has been explicitly configured, patch default
1115 * output in. If input is socket/tty we avoid this however,
1116 * since in that case we want output to default to the same
1117 * place as we read input from. */
1119 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1120 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1121 s->exec_context.std_input == EXEC_INPUT_NULL)
1122 s->exec_context.std_error = s->meta.manager->default_std_error;
1124 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1125 s->exec_context.std_input == EXEC_INPUT_NULL)
1126 s->exec_context.std_output = s->meta.manager->default_std_output;
1129 static int service_load(Unit *u) {
1131 Service *s = SERVICE(u);
1135 /* Load a .service file */
1136 if ((r = unit_load_fragment(u)) < 0)
1139 #ifdef HAVE_SYSV_COMPAT
1140 /* Load a classic init script as a fallback, if we couldn't find anything */
1141 if (u->meta.load_state == UNIT_STUB)
1142 if ((r = service_load_sysv(s)) < 0)
1146 /* Still nothing found? Then let's give up */
1147 if (u->meta.load_state == UNIT_STUB)
1150 /* We were able to load something, then let's add in the
1151 * dropin directories. */
1152 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
1155 /* This is a new unit? Then let's add in some extras */
1156 if (u->meta.load_state == UNIT_LOADED) {
1157 service_fix_output(s);
1159 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
1162 if ((r = unit_add_default_cgroups(u)) < 0)
1165 #ifdef HAVE_SYSV_COMPAT
1166 if ((r = sysv_fix_order(s)) < 0)
1170 if ((r = fsck_fix_order(s)) < 0)
1174 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
1177 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1178 s->notify_access = NOTIFY_MAIN;
1180 if (s->type == SERVICE_DBUS || s->bus_name)
1181 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true)) < 0)
1184 if (s->meta.default_dependencies)
1185 if ((r = service_add_default_dependencies(s)) < 0)
1189 return service_verify(s);
1192 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1194 ServiceExecCommand c;
1195 Service *s = SERVICE(u);
1196 const char *prefix2;
1201 p2 = strappend(prefix, "\t");
1202 prefix2 = p2 ? p2 : prefix;
1205 "%sService State: %s\n"
1206 "%sPermissionsStartOnly: %s\n"
1207 "%sRootDirectoryStartOnly: %s\n"
1208 "%sRemainAfterExit: %s\n"
1209 "%sGuessMainPID: %s\n"
1212 "%sNotifyAccess: %s\n",
1213 prefix, service_state_to_string(s->state),
1214 prefix, yes_no(s->permissions_start_only),
1215 prefix, yes_no(s->root_directory_start_only),
1216 prefix, yes_no(s->remain_after_exit),
1217 prefix, yes_no(s->guess_main_pid),
1218 prefix, service_type_to_string(s->type),
1219 prefix, service_restart_to_string(s->restart),
1220 prefix, notify_access_to_string(s->notify_access));
1222 if (s->control_pid > 0)
1224 "%sControl PID: %lu\n",
1225 prefix, (unsigned long) s->control_pid);
1227 if (s->main_pid > 0)
1230 "%sMain PID Known: %s\n"
1231 "%sMain PID Alien: %s\n",
1232 prefix, (unsigned long) s->main_pid,
1233 prefix, yes_no(s->main_pid_known),
1234 prefix, yes_no(s->main_pid_alien));
1239 prefix, s->pid_file);
1244 "%sBus Name Good: %s\n",
1245 prefix, s->bus_name,
1246 prefix, yes_no(s->bus_name_good));
1248 exec_context_dump(&s->exec_context, f, prefix);
1250 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1252 if (!s->exec_command[c])
1255 fprintf(f, "%s-> %s:\n",
1256 prefix, service_exec_command_to_string(c));
1258 exec_command_dump_list(s->exec_command[c], f, prefix2);
1261 #ifdef HAVE_SYSV_COMPAT
1264 "%sSysV Init Script Path: %s\n"
1265 "%sSysV Init Script has LSB Header: %s\n"
1266 "%sSysVEnabled: %s\n",
1267 prefix, s->sysv_path,
1268 prefix, yes_no(s->sysv_has_lsb),
1269 prefix, yes_no(s->sysv_enabled));
1271 if (s->sysv_start_priority >= 0)
1273 "%sSysVStartPriority: %i\n",
1274 prefix, s->sysv_start_priority);
1276 if (s->sysv_runlevels)
1277 fprintf(f, "%sSysVRunLevels: %s\n",
1278 prefix, s->sysv_runlevels);
1281 if (s->fsck_passno > 0)
1283 "%sFsckPassNo: %i\n",
1284 prefix, s->fsck_passno);
1287 fprintf(f, "%sStatus Text: %s\n",
1288 prefix, s->status_text);
1293 static int service_load_pid_file(Service *s, bool warn_if_missing) {
1303 if ((r = read_one_line_file(s->pid_file, &k)) < 0) {
1304 if (warn_if_missing)
1305 log_warning("Failed to read PID file %s after %s. The service might be broken.",
1306 s->pid_file, service_state_to_string(s->state));
1310 r = parse_pid(k, &pid);
1316 if (kill(pid, 0) < 0 && errno != EPERM) {
1317 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
1318 (unsigned long) pid, s->pid_file);
1322 if (s->main_pid_known) {
1323 if (pid == s->main_pid)
1326 log_debug("Main PID changing: %lu -> %lu",
1327 (unsigned long) s->main_pid, (unsigned long) pid);
1328 service_unwatch_main_pid(s);
1329 s->main_pid_known = false;
1332 if ((r = service_set_main_pid(s, pid)) < 0)
1335 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1336 /* FIXME: we need to do something here */
1342 static int service_search_main_pid(Service *s) {
1348 /* If we know it anyway, don't ever fallback to unreliable
1350 if (s->main_pid_known)
1353 if (!s->guess_main_pid)
1356 assert(s->main_pid <= 0);
1358 if ((pid = cgroup_bonding_search_main_pid_list(s->meta.cgroup_bondings)) <= 0)
1361 if ((r = service_set_main_pid(s, pid)) < 0)
1364 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1365 /* FIXME: we need to do something here */
1371 static int service_get_sockets(Service *s, Set **_set) {
1380 if (s->socket_fd >= 0)
1383 if (!set_isempty(s->configured_sockets))
1386 /* Collects all Socket objects that belong to this
1387 * service. Note that a service might have multiple sockets
1388 * via multiple names. */
1390 if (!(set = set_new(NULL, NULL)))
1393 SET_FOREACH(t, s->meta.names, i) {
1397 /* Look for all socket objects that go by any of our
1398 * units and collect their fds */
1400 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1405 p = manager_get_unit(s->meta.manager, k);
1411 if ((r = set_put(set, p)) < 0)
1423 static int service_notify_sockets_dead(Service *s) {
1425 Set *set, *free_set = NULL;
1431 /* Notifies all our sockets when we die */
1433 if (s->socket_fd >= 0)
1436 if (!set_isempty(s->configured_sockets))
1437 set = s->configured_sockets;
1439 if ((r = service_get_sockets(s, &free_set)) < 0)
1445 SET_FOREACH(sock, set, i)
1446 socket_notify_service_dead(sock);
1453 static void service_set_state(Service *s, ServiceState state) {
1454 ServiceState old_state;
1457 old_state = s->state;
1460 if (state != SERVICE_START_PRE &&
1461 state != SERVICE_START &&
1462 state != SERVICE_START_POST &&
1463 state != SERVICE_RELOAD &&
1464 state != SERVICE_STOP &&
1465 state != SERVICE_STOP_SIGTERM &&
1466 state != SERVICE_STOP_SIGKILL &&
1467 state != SERVICE_STOP_POST &&
1468 state != SERVICE_FINAL_SIGTERM &&
1469 state != SERVICE_FINAL_SIGKILL &&
1470 state != SERVICE_AUTO_RESTART)
1471 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1473 if (state != SERVICE_START &&
1474 state != SERVICE_START_POST &&
1475 state != SERVICE_RUNNING &&
1476 state != SERVICE_RELOAD &&
1477 state != SERVICE_STOP &&
1478 state != SERVICE_STOP_SIGTERM &&
1479 state != SERVICE_STOP_SIGKILL) {
1480 service_unwatch_main_pid(s);
1481 s->main_command = NULL;
1484 if (state != SERVICE_START_PRE &&
1485 state != SERVICE_START &&
1486 state != SERVICE_START_POST &&
1487 state != SERVICE_RELOAD &&
1488 state != SERVICE_STOP &&
1489 state != SERVICE_STOP_SIGTERM &&
1490 state != SERVICE_STOP_SIGKILL &&
1491 state != SERVICE_STOP_POST &&
1492 state != SERVICE_FINAL_SIGTERM &&
1493 state != SERVICE_FINAL_SIGKILL) {
1494 service_unwatch_control_pid(s);
1495 s->control_command = NULL;
1496 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1499 if (state == SERVICE_DEAD ||
1500 state == SERVICE_STOP ||
1501 state == SERVICE_STOP_SIGTERM ||
1502 state == SERVICE_STOP_SIGKILL ||
1503 state == SERVICE_STOP_POST ||
1504 state == SERVICE_FINAL_SIGTERM ||
1505 state == SERVICE_FINAL_SIGKILL ||
1506 state == SERVICE_FAILED ||
1507 state == SERVICE_AUTO_RESTART)
1508 service_notify_sockets_dead(s);
1510 if (state != SERVICE_START_PRE &&
1511 state != SERVICE_START &&
1512 state != SERVICE_START_POST &&
1513 state != SERVICE_RUNNING &&
1514 state != SERVICE_RELOAD &&
1515 state != SERVICE_STOP &&
1516 state != SERVICE_STOP_SIGTERM &&
1517 state != SERVICE_STOP_SIGKILL &&
1518 state != SERVICE_STOP_POST &&
1519 state != SERVICE_FINAL_SIGTERM &&
1520 state != SERVICE_FINAL_SIGKILL &&
1521 !(state == SERVICE_DEAD && s->meta.job)) {
1522 service_close_socket_fd(s);
1523 service_connection_unref(s);
1526 /* For the inactive states unit_notify() will trim the cgroup,
1527 * but for exit we have to do that ourselves... */
1528 if (state == SERVICE_EXITED && s->meta.manager->n_reloading <= 0)
1529 cgroup_bonding_trim_list(s->meta.cgroup_bondings, true);
1531 if (old_state != state)
1532 log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1534 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], !s->reload_failure);
1535 s->reload_failure = false;
1538 static int service_coldplug(Unit *u) {
1539 Service *s = SERVICE(u);
1543 assert(s->state == SERVICE_DEAD);
1545 if (s->deserialized_state != s->state) {
1547 if (s->deserialized_state == SERVICE_START_PRE ||
1548 s->deserialized_state == SERVICE_START ||
1549 s->deserialized_state == SERVICE_START_POST ||
1550 s->deserialized_state == SERVICE_RELOAD ||
1551 s->deserialized_state == SERVICE_STOP ||
1552 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1553 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1554 s->deserialized_state == SERVICE_STOP_POST ||
1555 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1556 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1557 s->deserialized_state == SERVICE_AUTO_RESTART) {
1559 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1562 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1564 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1569 if ((s->deserialized_state == SERVICE_START &&
1570 (s->type == SERVICE_FORKING ||
1571 s->type == SERVICE_DBUS ||
1572 s->type == SERVICE_ONESHOT ||
1573 s->type == SERVICE_NOTIFY)) ||
1574 s->deserialized_state == SERVICE_START_POST ||
1575 s->deserialized_state == SERVICE_RUNNING ||
1576 s->deserialized_state == SERVICE_RELOAD ||
1577 s->deserialized_state == SERVICE_STOP ||
1578 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1579 s->deserialized_state == SERVICE_STOP_SIGKILL)
1580 if (s->main_pid > 0)
1581 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1584 if (s->deserialized_state == SERVICE_START_PRE ||
1585 s->deserialized_state == SERVICE_START ||
1586 s->deserialized_state == SERVICE_START_POST ||
1587 s->deserialized_state == SERVICE_RELOAD ||
1588 s->deserialized_state == SERVICE_STOP ||
1589 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1590 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1591 s->deserialized_state == SERVICE_STOP_POST ||
1592 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1593 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1594 if (s->control_pid > 0)
1595 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1598 service_set_state(s, s->deserialized_state);
1604 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1608 unsigned rn_fds = 0;
1609 Set *set, *free_set = NULL;
1616 if (s->socket_fd >= 0)
1619 if (!set_isempty(s->configured_sockets))
1620 set = s->configured_sockets;
1622 if ((r = service_get_sockets(s, &free_set)) < 0)
1628 SET_FOREACH(sock, set, i) {
1632 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1644 if (!(t = new(int, rn_fds+cn_fds))) {
1650 memcpy(t, rfds, rn_fds * sizeof(int));
1651 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1656 rn_fds = rn_fds+cn_fds;
1674 static int service_spawn(
1679 bool apply_permissions,
1681 bool apply_tty_stdin,
1682 bool set_notify_socket,
1687 int *fds = NULL, *fdsbuf = NULL;
1688 unsigned n_fds = 0, n_env = 0;
1689 char **argv = NULL, **final_env = NULL, **our_env = NULL;
1696 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1697 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1698 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1700 if (s->socket_fd >= 0) {
1701 fds = &s->socket_fd;
1704 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1711 if (timeout && s->timeout_usec) {
1712 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1715 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1717 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1722 if (!(our_env = new0(char*, 4))) {
1727 if (set_notify_socket)
1728 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", s->meta.manager->notify_socket) < 0) {
1733 if (s->main_pid > 0)
1734 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1739 if (!(final_env = strv_env_merge(2,
1740 s->meta.manager->environment,
1755 s->meta.manager->confirm_spawn,
1756 s->meta.cgroup_bondings,
1757 s->meta.cgroup_attributes,
1764 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1765 /* FIXME: we need to do something here */
1771 strv_free(final_env);
1781 strv_free(final_env);
1784 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1789 static int main_pid_good(Service *s) {
1792 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1795 /* If we know the pid file, then lets just check if it is
1797 if (s->main_pid_known) {
1799 /* If it's an alien child let's check if it is still
1801 if (s->main_pid_alien)
1802 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1804 /* .. otherwise assume we'll get a SIGCHLD for it,
1805 * which we really should wait for to collect exit
1806 * status and code */
1807 return s->main_pid > 0;
1810 /* We don't know the pid */
1814 static int control_pid_good(Service *s) {
1817 return s->control_pid > 0;
1820 static int cgroup_good(Service *s) {
1825 if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0)
1831 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1838 if (allow_restart &&
1839 !s->forbid_restart &&
1840 (s->restart == SERVICE_RESTART_ALWAYS ||
1841 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure) ||
1842 (s->restart == SERVICE_RESTART_ON_FAILURE && s->failure) ||
1843 (s->restart == SERVICE_RESTART_ON_ABORT && s->failure &&
1844 (s->main_exec_status.code == CLD_KILLED ||
1845 s->main_exec_status.code == CLD_DUMPED)))) {
1847 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1850 service_set_state(s, SERVICE_AUTO_RESTART);
1852 service_set_state(s, s->failure ? SERVICE_FAILED : SERVICE_DEAD);
1854 s->forbid_restart = false;
1859 log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r));
1860 service_enter_dead(s, false, false);
1863 static void service_enter_signal(Service *s, ServiceState state, bool success);
1865 static void service_enter_stop_post(Service *s, bool success) {
1872 service_unwatch_control_pid(s);
1874 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1875 s->control_command_id = SERVICE_EXEC_STOP_POST;
1877 if ((r = service_spawn(s,
1881 !s->permissions_start_only,
1882 !s->root_directory_start_only,
1885 &s->control_pid)) < 0)
1889 service_set_state(s, SERVICE_STOP_POST);
1891 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1896 log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
1897 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1900 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1902 Set *pid_set = NULL;
1903 bool wait_for_exit = false;
1910 if (s->exec_context.kill_mode != KILL_NONE) {
1911 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1913 if (s->main_pid > 0) {
1914 if (kill_and_sigcont(s->main_pid, sig) < 0 && errno != ESRCH)
1915 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1917 wait_for_exit = !s->main_pid_alien;
1920 if (s->control_pid > 0) {
1921 if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
1922 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1924 wait_for_exit = true;
1927 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1929 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1934 /* Exclude the main/control pids from being killed via the cgroup */
1935 if (s->main_pid > 0)
1936 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
1939 if (s->control_pid > 0)
1940 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1943 if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig, true, pid_set)) < 0) {
1944 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1945 log_warning("Failed to kill control group: %s", strerror(-r));
1947 wait_for_exit = true;
1954 if (wait_for_exit) {
1955 if (s->timeout_usec > 0)
1956 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1959 service_set_state(s, state);
1960 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1961 service_enter_stop_post(s, true);
1963 service_enter_dead(s, true, true);
1968 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
1970 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1971 service_enter_stop_post(s, false);
1973 service_enter_dead(s, false, true);
1979 static void service_enter_stop(Service *s, bool success) {
1987 service_unwatch_control_pid(s);
1989 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1990 s->control_command_id = SERVICE_EXEC_STOP;
1992 if ((r = service_spawn(s,
1996 !s->permissions_start_only,
1997 !s->root_directory_start_only,
2000 &s->control_pid)) < 0)
2003 service_set_state(s, SERVICE_STOP);
2005 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2010 log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r));
2011 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2014 static void service_enter_running(Service *s, bool success) {
2015 int main_pid_ok, cgroup_ok;
2021 main_pid_ok = main_pid_good(s);
2022 cgroup_ok = cgroup_good(s);
2024 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2025 (s->bus_name_good || s->type != SERVICE_DBUS))
2026 service_set_state(s, SERVICE_RUNNING);
2027 else if (s->remain_after_exit)
2028 service_set_state(s, SERVICE_EXITED);
2030 service_enter_stop(s, true);
2033 static void service_enter_start_post(Service *s) {
2037 service_unwatch_control_pid(s);
2039 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
2040 s->control_command_id = SERVICE_EXEC_START_POST;
2042 if ((r = service_spawn(s,
2046 !s->permissions_start_only,
2047 !s->root_directory_start_only,
2050 &s->control_pid)) < 0)
2053 service_set_state(s, SERVICE_START_POST);
2055 service_enter_running(s, true);
2060 log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
2061 service_enter_stop(s, false);
2064 static void service_enter_start(Service *s) {
2071 assert(s->exec_command[SERVICE_EXEC_START]);
2072 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2074 if (s->type == SERVICE_FORKING)
2075 service_unwatch_control_pid(s);
2077 service_unwatch_main_pid(s);
2079 if (s->type == SERVICE_FORKING) {
2080 s->control_command_id = SERVICE_EXEC_START;
2081 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2083 s->main_command = NULL;
2085 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2086 s->control_command = NULL;
2088 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2091 if ((r = service_spawn(s,
2093 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
2098 s->notify_access != NOTIFY_NONE,
2102 if (s->type == SERVICE_SIMPLE) {
2103 /* For simple services we immediately start
2104 * the START_POST binaries. */
2106 service_set_main_pid(s, pid);
2107 service_enter_start_post(s);
2109 } else if (s->type == SERVICE_FORKING) {
2111 /* For forking services we wait until the start
2112 * process exited. */
2114 s->control_pid = pid;
2115 service_set_state(s, SERVICE_START);
2117 } else if (s->type == SERVICE_ONESHOT ||
2118 s->type == SERVICE_DBUS ||
2119 s->type == SERVICE_NOTIFY) {
2121 /* For oneshot services we wait until the start
2122 * process exited, too, but it is our main process. */
2124 /* For D-Bus services we know the main pid right away,
2125 * but wait for the bus name to appear on the
2126 * bus. Notify services are similar. */
2128 service_set_main_pid(s, pid);
2129 service_set_state(s, SERVICE_START);
2131 assert_not_reached("Unknown service type");
2136 log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r));
2137 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2140 static void service_enter_start_pre(Service *s) {
2145 service_unwatch_control_pid(s);
2147 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
2148 s->control_command_id = SERVICE_EXEC_START_PRE;
2150 if ((r = service_spawn(s,
2154 !s->permissions_start_only,
2155 !s->root_directory_start_only,
2158 &s->control_pid)) < 0)
2161 service_set_state(s, SERVICE_START_PRE);
2163 service_enter_start(s);
2168 log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
2169 service_enter_dead(s, false, true);
2172 static void service_enter_restart(Service *s) {
2177 dbus_error_init(&error);
2180 log_info("Job pending for unit, delaying automatic restart.");
2182 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
2186 service_enter_dead(s, true, false);
2188 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, &error, NULL)) < 0)
2191 log_debug("%s scheduled restart job.", s->meta.id);
2195 log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r));
2196 service_enter_dead(s, false, false);
2198 dbus_error_free(&error);
2201 static void service_enter_reload(Service *s) {
2206 service_unwatch_control_pid(s);
2208 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
2209 s->control_command_id = SERVICE_EXEC_RELOAD;
2211 if ((r = service_spawn(s,
2215 !s->permissions_start_only,
2216 !s->root_directory_start_only,
2219 &s->control_pid)) < 0)
2222 service_set_state(s, SERVICE_RELOAD);
2224 service_enter_running(s, true);
2229 log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r));
2230 s->reload_failure = true;
2231 service_enter_running(s, true);
2234 static void service_run_next_control(Service *s, bool success) {
2238 assert(s->control_command);
2239 assert(s->control_command->command_next);
2244 assert(s->control_command_id != SERVICE_EXEC_START);
2246 s->control_command = s->control_command->command_next;
2247 service_unwatch_control_pid(s);
2249 if ((r = service_spawn(s,
2253 !s->permissions_start_only,
2254 !s->root_directory_start_only,
2255 s->control_command_id == SERVICE_EXEC_START_PRE ||
2256 s->control_command_id == SERVICE_EXEC_STOP_POST,
2258 &s->control_pid)) < 0)
2264 log_warning("%s failed to run next control task: %s", s->meta.id, strerror(-r));
2266 if (s->state == SERVICE_START_PRE)
2267 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2268 else if (s->state == SERVICE_STOP)
2269 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2270 else if (s->state == SERVICE_STOP_POST)
2271 service_enter_dead(s, false, true);
2272 else if (s->state == SERVICE_RELOAD) {
2273 s->reload_failure = true;
2274 service_enter_running(s, true);
2276 service_enter_stop(s, false);
2279 static void service_run_next_main(Service *s, bool success) {
2284 assert(s->main_command);
2285 assert(s->main_command->command_next);
2286 assert(s->type == SERVICE_ONESHOT);
2291 s->main_command = s->main_command->command_next;
2292 service_unwatch_main_pid(s);
2294 if ((r = service_spawn(s,
2301 s->notify_access != NOTIFY_NONE,
2305 service_set_main_pid(s, pid);
2310 log_warning("%s failed to run next main task: %s", s->meta.id, strerror(-r));
2311 service_enter_stop(s, false);
2314 static int service_start(Unit *u) {
2315 Service *s = SERVICE(u);
2319 /* We cannot fulfill this request right now, try again later
2321 if (s->state == SERVICE_STOP ||
2322 s->state == SERVICE_STOP_SIGTERM ||
2323 s->state == SERVICE_STOP_SIGKILL ||
2324 s->state == SERVICE_STOP_POST ||
2325 s->state == SERVICE_FINAL_SIGTERM ||
2326 s->state == SERVICE_FINAL_SIGKILL)
2329 /* Already on it! */
2330 if (s->state == SERVICE_START_PRE ||
2331 s->state == SERVICE_START ||
2332 s->state == SERVICE_START_POST)
2335 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED || s->state == SERVICE_AUTO_RESTART);
2337 /* Make sure we don't enter a busy loop of some kind. */
2338 if (!ratelimit_test(&s->ratelimit)) {
2339 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
2344 s->main_pid_known = false;
2345 s->main_pid_alien = false;
2346 s->forbid_restart = false;
2348 service_enter_start_pre(s);
2352 static int service_stop(Unit *u) {
2353 Service *s = SERVICE(u);
2357 /* This is a user request, so don't do restarts on this
2359 s->forbid_restart = true;
2362 if (s->state == SERVICE_STOP ||
2363 s->state == SERVICE_STOP_SIGTERM ||
2364 s->state == SERVICE_STOP_SIGKILL ||
2365 s->state == SERVICE_STOP_POST ||
2366 s->state == SERVICE_FINAL_SIGTERM ||
2367 s->state == SERVICE_FINAL_SIGKILL)
2370 /* Don't allow a restart */
2371 if (s->state == SERVICE_AUTO_RESTART) {
2372 service_set_state(s, SERVICE_DEAD);
2376 /* If there's already something running we go directly into
2378 if (s->state == SERVICE_START_PRE ||
2379 s->state == SERVICE_START ||
2380 s->state == SERVICE_START_POST ||
2381 s->state == SERVICE_RELOAD) {
2382 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2386 assert(s->state == SERVICE_RUNNING ||
2387 s->state == SERVICE_EXITED);
2389 service_enter_stop(s, true);
2393 static int service_reload(Unit *u) {
2394 Service *s = SERVICE(u);
2398 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2400 service_enter_reload(s);
2404 static bool service_can_reload(Unit *u) {
2405 Service *s = SERVICE(u);
2409 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2412 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2413 Service *s = SERVICE(u);
2419 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2420 unit_serialize_item(u, f, "failure", yes_no(s->failure));
2422 if (s->control_pid > 0)
2423 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2425 if (s->main_pid_known && s->main_pid > 0)
2426 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2428 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2431 unit_serialize_item(u, f, "status-text", s->status_text);
2433 /* There's a minor uncleanliness here: if there are multiple
2434 * commands attached here, we will start from the first one
2436 if (s->control_command_id >= 0)
2437 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2439 if (s->socket_fd >= 0) {
2442 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2445 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2448 if (s->main_exec_status.pid > 0) {
2449 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2450 dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp);
2451 dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp);
2453 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2454 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2455 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2462 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2463 Service *s = SERVICE(u);
2470 if (streq(key, "state")) {
2473 if ((state = service_state_from_string(value)) < 0)
2474 log_debug("Failed to parse state value %s", value);
2476 s->deserialized_state = state;
2477 } else if (streq(key, "failure")) {
2480 if ((b = parse_boolean(value)) < 0)
2481 log_debug("Failed to parse failure value %s", value);
2483 s->failure = b || s->failure;
2484 } else if (streq(key, "control-pid")) {
2487 if (parse_pid(value, &pid) < 0)
2488 log_debug("Failed to parse control-pid value %s", value);
2490 s->control_pid = pid;
2491 } else if (streq(key, "main-pid")) {
2494 if (parse_pid(value, &pid) < 0)
2495 log_debug("Failed to parse main-pid value %s", value);
2497 service_set_main_pid(s, (pid_t) pid);
2498 } else if (streq(key, "main-pid-known")) {
2501 if ((b = parse_boolean(value)) < 0)
2502 log_debug("Failed to parse main-pid-known value %s", value);
2504 s->main_pid_known = b;
2505 } else if (streq(key, "status-text")) {
2508 if ((t = strdup(value))) {
2509 free(s->status_text);
2513 } else if (streq(key, "control-command")) {
2514 ServiceExecCommand id;
2516 if ((id = service_exec_command_from_string(value)) < 0)
2517 log_debug("Failed to parse exec-command value %s", value);
2519 s->control_command_id = id;
2520 s->control_command = s->exec_command[id];
2522 } else if (streq(key, "socket-fd")) {
2525 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2526 log_debug("Failed to parse socket-fd value %s", value);
2529 if (s->socket_fd >= 0)
2530 close_nointr_nofail(s->socket_fd);
2531 s->socket_fd = fdset_remove(fds, fd);
2533 } else if (streq(key, "main-exec-status-pid")) {
2536 if (parse_pid(value, &pid) < 0)
2537 log_debug("Failed to parse main-exec-status-pid value %s", value);
2539 s->main_exec_status.pid = pid;
2540 } else if (streq(key, "main-exec-status-code")) {
2543 if (safe_atoi(value, &i) < 0)
2544 log_debug("Failed to parse main-exec-status-code value %s", value);
2546 s->main_exec_status.code = i;
2547 } else if (streq(key, "main-exec-status-status")) {
2550 if (safe_atoi(value, &i) < 0)
2551 log_debug("Failed to parse main-exec-status-status value %s", value);
2553 s->main_exec_status.status = i;
2554 } else if (streq(key, "main-exec-status-start"))
2555 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2556 else if (streq(key, "main-exec-status-exit"))
2557 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2559 log_debug("Unknown serialization key '%s'", key);
2564 static UnitActiveState service_active_state(Unit *u) {
2567 return state_translation_table[SERVICE(u)->state];
2570 static const char *service_sub_state_to_string(Unit *u) {
2573 return service_state_to_string(SERVICE(u)->state);
2576 static bool service_check_gc(Unit *u) {
2577 Service *s = SERVICE(u);
2581 /* Never clean up services that still have a process around,
2582 * even if the service is formally dead. */
2583 if (cgroup_good(s) > 0 ||
2584 main_pid_good(s) > 0 ||
2585 control_pid_good(s) > 0)
2588 #ifdef HAVE_SYSV_COMPAT
2596 static bool service_check_snapshot(Unit *u) {
2597 Service *s = SERVICE(u);
2601 return !s->got_socket_fd;
2604 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2605 Service *s = SERVICE(u);
2611 if (!s->meta.fragment_path)
2612 success = is_clean_exit_lsb(code, status);
2614 success = is_clean_exit(code, status);
2616 if (s->main_pid == pid) {
2617 /* Forking services may occasionally move to a new PID.
2618 * As long as they update the PID file before exiting the old
2619 * PID, they're fine. */
2620 if (service_load_pid_file(s, false) == 0)
2624 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2626 /* If this is not a forking service than the main
2627 * process got started and hence we copy the exit
2628 * status so that it is recorded both as main and as
2629 * control process exit status */
2630 if (s->main_command) {
2631 s->main_command->exec_status = s->main_exec_status;
2633 if (s->main_command->ignore)
2637 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2638 "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
2639 s->failure = s->failure || !success;
2641 if (s->main_command &&
2642 s->main_command->command_next &&
2645 /* There is another command to *
2646 * execute, so let's do that. */
2648 log_debug("%s running next main command for state %s", u->meta.id, service_state_to_string(s->state));
2649 service_run_next_main(s, success);
2653 /* The service exited, so the service is officially
2655 s->main_command = NULL;
2659 case SERVICE_START_POST:
2660 case SERVICE_RELOAD:
2662 /* Need to wait until the operation is
2667 if (s->type == SERVICE_ONESHOT) {
2668 /* This was our main goal, so let's go on */
2670 service_enter_start_post(s);
2672 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2675 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2680 case SERVICE_RUNNING:
2681 service_enter_running(s, success);
2684 case SERVICE_STOP_SIGTERM:
2685 case SERVICE_STOP_SIGKILL:
2687 if (!control_pid_good(s))
2688 service_enter_stop_post(s, success);
2690 /* If there is still a control process, wait for that first */
2694 assert_not_reached("Uh, main process died at wrong time.");
2698 } else if (s->control_pid == pid) {
2702 if (s->control_command) {
2703 exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
2705 if (s->control_command->ignore)
2709 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2710 "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
2711 s->failure = s->failure || !success;
2713 if (s->control_command &&
2714 s->control_command->command_next &&
2717 /* There is another command to *
2718 * execute, so let's do that. */
2720 log_debug("%s running next control command for state %s", u->meta.id, service_state_to_string(s->state));
2721 service_run_next_control(s, success);
2724 /* No further commands for this step, so let's
2725 * figure out what to do next */
2727 s->control_command = NULL;
2728 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2730 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2734 case SERVICE_START_PRE:
2736 service_enter_start(s);
2738 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2742 assert(s->type == SERVICE_FORKING);
2744 /* Let's try to load the pid
2745 * file here if we can. We
2746 * ignore the return value,
2747 * since the PID file might
2748 * actually be created by a
2749 * START_POST script */
2752 service_load_pid_file(s, !s->exec_command[SERVICE_EXEC_START_POST]);
2753 service_search_main_pid(s);
2755 service_enter_start_post(s);
2757 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2761 case SERVICE_START_POST:
2763 service_load_pid_file(s, true);
2764 service_search_main_pid(s);
2767 s->reload_failure = !success;
2768 service_enter_running(s, true);
2771 case SERVICE_RELOAD:
2773 service_load_pid_file(s, true);
2774 service_search_main_pid(s);
2777 s->reload_failure = !success;
2778 service_enter_running(s, true);
2782 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2785 case SERVICE_STOP_SIGTERM:
2786 case SERVICE_STOP_SIGKILL:
2787 if (main_pid_good(s) <= 0)
2788 service_enter_stop_post(s, success);
2790 /* If there is still a service
2791 * process around, wait until
2792 * that one quit, too */
2795 case SERVICE_STOP_POST:
2796 case SERVICE_FINAL_SIGTERM:
2797 case SERVICE_FINAL_SIGKILL:
2798 service_enter_dead(s, success, true);
2802 assert_not_reached("Uh, control process died at wrong time.");
2807 /* Notify clients about changed exit status */
2808 unit_add_to_dbus_queue(u);
2811 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2812 Service *s = SERVICE(u);
2815 assert(elapsed == 1);
2817 assert(w == &s->timer_watch);
2821 case SERVICE_START_PRE:
2823 log_warning("%s operation timed out. Terminating.", u->meta.id);
2824 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2827 case SERVICE_START_POST:
2828 log_warning("%s operation timed out. Stopping.", u->meta.id);
2829 service_enter_stop(s, false);
2832 case SERVICE_RELOAD:
2833 log_warning("%s operation timed out. Stopping.", u->meta.id);
2834 s->reload_failure = true;
2835 service_enter_running(s, true);
2839 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2840 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2843 case SERVICE_STOP_SIGTERM:
2844 if (s->exec_context.send_sigkill) {
2845 log_warning("%s stopping timed out. Killing.", u->meta.id);
2846 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2848 log_warning("%s stopping timed out. Skipping SIGKILL.", u->meta.id);
2849 service_enter_stop_post(s, false);
2854 case SERVICE_STOP_SIGKILL:
2855 /* Uh, we sent a SIGKILL and it is still not gone?
2856 * Must be something we cannot kill, so let's just be
2857 * weirded out and continue */
2859 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2860 service_enter_stop_post(s, false);
2863 case SERVICE_STOP_POST:
2864 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2865 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2868 case SERVICE_FINAL_SIGTERM:
2869 if (s->exec_context.send_sigkill) {
2870 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2871 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2873 log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->meta.id);
2874 service_enter_dead(s, false, true);
2879 case SERVICE_FINAL_SIGKILL:
2880 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->meta.id);
2881 service_enter_dead(s, false, true);
2884 case SERVICE_AUTO_RESTART:
2885 log_info("%s holdoff time over, scheduling restart.", u->meta.id);
2886 service_enter_restart(s);
2890 assert_not_reached("Timeout at wrong time.");
2894 static void service_cgroup_notify_event(Unit *u) {
2895 Service *s = SERVICE(u);
2899 log_debug("%s: cgroup is empty", u->meta.id);
2903 /* Waiting for SIGCHLD is usually more interesting,
2904 * because it includes return codes/signals. Which is
2905 * why we ignore the cgroup events for most cases,
2906 * except when we don't know pid which to expect the
2909 case SERVICE_RUNNING:
2910 service_enter_running(s, true);
2913 case SERVICE_STOP_SIGTERM:
2914 case SERVICE_STOP_SIGKILL:
2916 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2917 service_enter_stop_post(s, true);
2921 case SERVICE_FINAL_SIGTERM:
2922 case SERVICE_FINAL_SIGKILL:
2923 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2924 service_enter_dead(s, true, true);
2933 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
2934 Service *s = SERVICE(u);
2939 if (s->notify_access == NOTIFY_NONE) {
2940 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
2941 u->meta.id, (unsigned long) pid);
2945 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
2946 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
2947 u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
2951 log_debug("%s: Got message", u->meta.id);
2953 /* Interpret MAINPID= */
2954 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2955 (s->state == SERVICE_START ||
2956 s->state == SERVICE_START_POST ||
2957 s->state == SERVICE_RUNNING ||
2958 s->state == SERVICE_RELOAD)) {
2960 if (parse_pid(e + 8, &pid) < 0)
2961 log_warning("Failed to parse notification message %s", e);
2963 log_debug("%s: got %s", u->meta.id, e);
2964 service_set_main_pid(s, pid);
2968 /* Interpret READY= */
2969 if (s->type == SERVICE_NOTIFY &&
2970 s->state == SERVICE_START &&
2971 strv_find(tags, "READY=1")) {
2972 log_debug("%s: got READY=1", u->meta.id);
2974 service_enter_start_post(s);
2977 /* Interpret STATUS= */
2978 if ((e = strv_find_prefix(tags, "STATUS="))) {
2982 if (!(t = strdup(e+7))) {
2983 log_error("Failed to allocate string.");
2987 log_debug("%s: got %s", u->meta.id, e);
2989 free(s->status_text);
2992 free(s->status_text);
2993 s->status_text = NULL;
2998 /* Notify clients about changed status or main pid */
2999 unit_add_to_dbus_queue(u);
3002 #ifdef HAVE_SYSV_COMPAT
3005 static void sysv_facility_in_insserv_conf(Manager *mgr) {
3009 if (!(f = fopen("/etc/insserv.conf", "re"))) {
3010 r = errno == ENOENT ? 0 : -errno;
3015 char l[LINE_MAX], *t;
3016 char **parsed = NULL;
3018 if (!fgets(l, sizeof(l), f)) {
3023 log_error("Failed to read configuration file '/etc/insserv.conf': %s", strerror(-r));
3028 if (*t != '$' && *t != '<')
3031 parsed = strv_split(t,WHITESPACE);
3032 /* we ignore <interactive>, not used, equivalent to X-Interactive */
3033 if (parsed && !startswith_no_case (parsed[0], "<interactive>")) {
3036 if (sysv_translate_facility(parsed[0], NULL, &facility) < 0)
3038 if ((u = manager_get_unit(mgr, facility)) && (u->meta.type == UNIT_TARGET)) {
3040 char *dep = NULL, *name, **j;
3042 STRV_FOREACH (j, parsed+1) {
3051 if (sysv_translate_facility(name, NULL, &dep) < 0)
3054 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, e, dep, NULL, true);
3069 static int service_enumerate(Manager *m) {
3073 char *path = NULL, *fpath = NULL, *name = NULL;
3074 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
3081 if (m->running_as != MANAGER_SYSTEM)
3084 zero(runlevel_services);
3086 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3087 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3091 path = join(*p, "/", rcnd_table[i].path, NULL);
3100 if (!(d = opendir(path))) {
3101 if (errno != ENOENT)
3102 log_warning("opendir() failed on %s: %s", path, strerror(errno));
3107 while ((de = readdir(d))) {
3110 if (ignore_file(de->d_name))
3113 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3116 if (strlen(de->d_name) < 4)
3119 a = undecchar(de->d_name[1]);
3120 b = undecchar(de->d_name[2]);
3126 fpath = join(path, "/", de->d_name, NULL);
3132 if (access(fpath, X_OK) < 0) {
3134 if (errno != ENOENT)
3135 log_warning("access() failed on %s: %s", fpath, strerror(errno));
3141 if (!(name = sysv_translate_name(de->d_name + 3))) {
3146 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
3147 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3151 if (de->d_name[0] == 'S') {
3153 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
3154 SERVICE(service)->sysv_start_priority_from_rcnd =
3155 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3157 SERVICE(service)->sysv_enabled = true;
3160 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
3163 if ((r = set_put(runlevel_services[i], service)) < 0)
3166 } else if (de->d_name[0] == 'K' &&
3167 (rcnd_table[i].type == RUNLEVEL_DOWN ||
3168 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
3170 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
3173 if ((r = set_put(shutdown_services, service)) < 0)
3179 /* Now we loaded all stubs and are aware of the lowest
3180 start-up priority for all services, not let's actually load
3181 the services, this will also tell us which services are
3182 actually native now */
3183 manager_dispatch_load_queue(m);
3185 /* If this is a native service, rely on native ways to pull in
3186 * a service, don't pull it in via sysv rcN.d links. */
3187 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3188 SET_FOREACH(service, runlevel_services[i], j) {
3189 service = unit_follow_merge(service);
3191 if (service->meta.fragment_path)
3194 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3198 /* We honour K links only for halt/reboot. For the normal
3199 * runlevels we assume the stop jobs will be implicitly added
3200 * by the core logic. Also, we don't really distinguish here
3201 * between the runlevels 0 and 6 and just add them to the
3202 * special shutdown target. On SUSE the boot.d/ runlevel is
3203 * also used for shutdown, so we add links for that too to the
3204 * shutdown target.*/
3205 SET_FOREACH(service, shutdown_services, j) {
3206 service = unit_follow_merge(service);
3208 if (service->meta.fragment_path)
3211 if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
3218 sysv_facility_in_insserv_conf (m);
3226 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3227 set_free(runlevel_services[i]);
3228 set_free(shutdown_services);
3237 static void service_bus_name_owner_change(
3240 const char *old_owner,
3241 const char *new_owner) {
3243 Service *s = SERVICE(u);
3248 assert(streq(s->bus_name, name));
3249 assert(old_owner || new_owner);
3251 if (old_owner && new_owner)
3252 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
3254 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
3256 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
3258 s->bus_name_good = !!new_owner;
3260 if (s->type == SERVICE_DBUS) {
3262 /* service_enter_running() will figure out what to
3264 if (s->state == SERVICE_RUNNING)
3265 service_enter_running(s, true);
3266 else if (s->state == SERVICE_START && new_owner)
3267 service_enter_start_post(s);
3269 } else if (new_owner &&
3271 (s->state == SERVICE_START ||
3272 s->state == SERVICE_START_POST ||
3273 s->state == SERVICE_RUNNING ||
3274 s->state == SERVICE_RELOAD)) {
3276 /* Try to acquire PID from bus service */
3277 log_debug("Trying to acquire PID from D-Bus name...");
3279 bus_query_pid(u->meta.manager, name);
3283 static void service_bus_query_pid_done(
3288 Service *s = SERVICE(u);
3293 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
3295 if (s->main_pid <= 0 &&
3296 (s->state == SERVICE_START ||
3297 s->state == SERVICE_START_POST ||
3298 s->state == SERVICE_RUNNING ||
3299 s->state == SERVICE_RELOAD))
3300 service_set_main_pid(s, pid);
3303 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3307 /* This is called by the socket code when instantiating a new
3308 * service for a stream socket and the socket needs to be
3311 if (s->meta.load_state != UNIT_LOADED)
3314 if (s->socket_fd >= 0)
3317 if (s->state != SERVICE_DEAD)
3321 s->got_socket_fd = true;
3322 s->accept_socket = sock;
3327 static void service_reset_failed(Unit *u) {
3328 Service *s = SERVICE(u);
3332 if (s->state == SERVICE_FAILED)
3333 service_set_state(s, SERVICE_DEAD);
3338 static bool service_need_daemon_reload(Unit *u) {
3339 Service *s = SERVICE(u);
3343 #ifdef HAVE_SYSV_COMPAT
3348 if (stat(s->sysv_path, &st) < 0)
3349 /* What, cannot access this anymore? */
3352 if (s->sysv_mtime > 0 &&
3353 timespec_load(&st.st_mtim) != s->sysv_mtime)
3361 static int service_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
3362 Service *s = SERVICE(u);
3364 Set *pid_set = NULL;
3368 if (s->main_pid <= 0 && who == KILL_MAIN) {
3369 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
3373 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3374 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
3378 if (who == KILL_CONTROL || who == KILL_ALL)
3379 if (s->control_pid > 0)
3380 if (kill(s->control_pid, signo) < 0)
3383 if (who == KILL_MAIN || who == KILL_ALL)
3384 if (s->main_pid > 0)
3385 if (kill(s->main_pid, signo) < 0)
3388 if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
3391 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
3394 /* Exclude the control/main pid from being killed via the cgroup */
3395 if (s->control_pid > 0)
3396 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
3401 if (s->main_pid > 0)
3402 if ((q = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) {
3407 if ((q = cgroup_bonding_kill_list(s->meta.cgroup_bondings, signo, false, pid_set)) < 0)
3408 if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
3419 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3420 [SERVICE_DEAD] = "dead",
3421 [SERVICE_START_PRE] = "start-pre",
3422 [SERVICE_START] = "start",
3423 [SERVICE_START_POST] = "start-post",
3424 [SERVICE_RUNNING] = "running",
3425 [SERVICE_EXITED] = "exited",
3426 [SERVICE_RELOAD] = "reload",
3427 [SERVICE_STOP] = "stop",
3428 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3429 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3430 [SERVICE_STOP_POST] = "stop-post",
3431 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3432 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3433 [SERVICE_FAILED] = "failed",
3434 [SERVICE_AUTO_RESTART] = "auto-restart",
3437 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3439 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3440 [SERVICE_RESTART_NO] = "no",
3441 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3442 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3443 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3444 [SERVICE_RESTART_ALWAYS] = "always"
3447 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3449 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3450 [SERVICE_SIMPLE] = "simple",
3451 [SERVICE_FORKING] = "forking",
3452 [SERVICE_ONESHOT] = "oneshot",
3453 [SERVICE_DBUS] = "dbus",
3454 [SERVICE_NOTIFY] = "notify"
3457 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3459 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3460 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3461 [SERVICE_EXEC_START] = "ExecStart",
3462 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3463 [SERVICE_EXEC_RELOAD] = "ExecReload",
3464 [SERVICE_EXEC_STOP] = "ExecStop",
3465 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3468 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3470 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3471 [NOTIFY_NONE] = "none",
3472 [NOTIFY_MAIN] = "main",
3473 [NOTIFY_ALL] = "all"
3476 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3478 const UnitVTable service_vtable = {
3479 .suffix = ".service",
3484 .show_status = true,
3486 .init = service_init,
3487 .done = service_done,
3488 .load = service_load,
3490 .coldplug = service_coldplug,
3492 .dump = service_dump,
3494 .start = service_start,
3495 .stop = service_stop,
3496 .reload = service_reload,
3498 .can_reload = service_can_reload,
3500 .kill = service_kill,
3502 .serialize = service_serialize,
3503 .deserialize_item = service_deserialize_item,
3505 .active_state = service_active_state,
3506 .sub_state_to_string = service_sub_state_to_string,
3508 .check_gc = service_check_gc,
3509 .check_snapshot = service_check_snapshot,
3511 .sigchld_event = service_sigchld_event,
3512 .timer_event = service_timer_event,
3514 .reset_failed = service_reset_failed,
3516 .need_daemon_reload = service_need_daemon_reload,
3518 .cgroup_notify_empty = service_cgroup_notify_event,
3519 .notify_message = service_notify_message,
3521 .bus_name_owner_change = service_bus_name_owner_change,
3522 .bus_query_pid_done = service_bus_query_pid_done,
3524 .bus_interface = "org.freedesktop.systemd1.Service",
3525 .bus_message_handler = bus_service_message_handler,
3526 .bus_invalidating_properties = bus_service_invalidating_properties,
3528 #ifdef HAVE_SYSV_COMPAT
3529 .enumerate = service_enumerate