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)
815 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
816 /* If there a runlevels configured for this service
817 * but none of the standard ones, then we assume this
818 * is some special kind of service (which might be
819 * needed for early boot) and don't create any links
822 s->meta.default_dependencies = false;
824 /* Don't timeout special services during boot (like fsck) */
827 s->timeout_usec = DEFAULT_SYSV_TIMEOUT_USEC;
829 /* Special setting for all SysV services */
830 s->type = SERVICE_FORKING;
831 s->remain_after_exit = !s->pid_file;
832 s->guess_main_pid = false;
833 s->restart = SERVICE_RESTART_NO;
835 if (s->meta.manager->sysv_console)
836 s->exec_context.std_output = EXEC_OUTPUT_TTY;
838 s->exec_context.kill_mode = KILL_PROCESS;
840 /* We use the long description only if
841 * no short description is set. */
843 if (short_description)
844 description = short_description;
845 else if (chkconfig_description)
846 description = chkconfig_description;
847 else if (long_description)
848 description = long_description;
855 if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
860 u->meta.description = d;
863 /* The priority that has been set in /etc/rcN.d/ hierarchies
864 * takes precedence over what is stored as default in the LSB
866 if (s->sysv_start_priority_from_rcnd >= 0)
867 s->sysv_start_priority = s->sysv_start_priority_from_rcnd;
869 u->meta.load_state = UNIT_LOADED;
877 free(short_description);
878 free(long_description);
879 free(chkconfig_description);
884 static int service_load_sysv_name(Service *s, const char *name) {
890 /* For SysV services we strip the boot.*, rc.* and *.sh
891 * prefixes/suffixes. */
892 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
893 if (endswith(name, ".sh.service"))
898 if (startswith(name, "boot."))
902 #ifdef TARGET_FRUGALWARE
903 if (startswith(name, "rc."))
907 STRV_FOREACH(p, s->meta.manager->lookup_paths.sysvinit_path) {
911 path = join(*p, "/", name, NULL);
915 assert(endswith(path, ".service"));
916 path[strlen(path)-8] = 0;
918 r = service_load_sysv_path(s, path);
920 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
921 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
922 /* Try Debian style *.sh source'able init scripts */
924 r = service_load_sysv_path(s, path);
930 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
931 /* Try SUSE style boot.* init scripts */
933 path = join(*p, "/boot.", name, NULL);
937 /* Drop .service suffix */
938 path[strlen(path)-8] = 0;
939 r = service_load_sysv_path(s, path);
944 #ifdef TARGET_FRUGALWARE
945 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
946 /* Try Frugalware style rc.* init scripts */
948 path = join(*p, "/rc.", name, NULL);
952 /* Drop .service suffix */
953 path[strlen(path)-8] = 0;
954 r = service_load_sysv_path(s, path);
962 if ((s->meta.load_state != UNIT_STUB))
969 static int service_load_sysv(Service *s) {
976 /* Load service data from SysV init scripts, preferably with
979 if (strv_isempty(s->meta.manager->lookup_paths.sysvinit_path))
982 if ((t = s->meta.id))
983 if ((r = service_load_sysv_name(s, t)) < 0)
986 if (s->meta.load_state == UNIT_STUB)
987 SET_FOREACH(t, s->meta.names, i) {
991 if ((r = service_load_sysv_name(s, t)) < 0)
994 if (s->meta.load_state != UNIT_STUB)
1002 static int fsck_fix_order(Service *s) {
1008 if (s->fsck_passno <= 0)
1011 /* For each pair of services where both have an fsck priority
1012 * we order things based on it. */
1014 LIST_FOREACH(units_by_type, other, s->meta.manager->units_by_type[UNIT_SERVICE]) {
1018 t = (Service*) other;
1023 if (t->meta.load_state != UNIT_LOADED)
1026 if (t->fsck_passno <= 0)
1029 if (t->fsck_passno < s->fsck_passno)
1031 else if (t->fsck_passno > s->fsck_passno)
1036 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
1043 static int service_verify(Service *s) {
1046 if (s->meta.load_state != UNIT_LOADED)
1049 if (!s->exec_command[SERVICE_EXEC_START]) {
1050 log_error("%s lacks ExecStart setting. Refusing.", s->meta.id);
1054 if (s->type != SERVICE_ONESHOT &&
1055 s->exec_command[SERVICE_EXEC_START]->command_next) {
1056 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", s->meta.id);
1060 if (s->type == SERVICE_ONESHOT &&
1061 s->exec_command[SERVICE_EXEC_RELOAD]) {
1062 log_error("%s has an ExecReload setting, which is not allowed for Type=oneshot services. Refusing.", s->meta.id);
1066 if (s->type == SERVICE_DBUS && !s->bus_name) {
1067 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", s->meta.id);
1071 if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
1072 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
1079 static int service_add_default_dependencies(Service *s) {
1084 /* Add a number of automatic dependencies useful for the
1085 * majority of services. */
1087 /* First, pull in base system */
1088 if (s->meta.manager->running_as == MANAGER_SYSTEM) {
1090 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
1093 } else if (s->meta.manager->running_as == MANAGER_USER) {
1095 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
1099 /* Second, activate normal shutdown */
1100 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
1103 static void service_fix_output(Service *s) {
1106 /* If nothing has been explicitly configured, patch default
1107 * output in. If input is socket/tty we avoid this however,
1108 * since in that case we want output to default to the same
1109 * place as we read input from. */
1111 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1112 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1113 s->exec_context.std_input == EXEC_INPUT_NULL)
1114 s->exec_context.std_error = s->meta.manager->default_std_error;
1116 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1117 s->exec_context.std_input == EXEC_INPUT_NULL)
1118 s->exec_context.std_output = s->meta.manager->default_std_output;
1121 static int service_load(Unit *u) {
1123 Service *s = SERVICE(u);
1127 /* Load a .service file */
1128 if ((r = unit_load_fragment(u)) < 0)
1131 #ifdef HAVE_SYSV_COMPAT
1132 /* Load a classic init script as a fallback, if we couldn't find anything */
1133 if (u->meta.load_state == UNIT_STUB)
1134 if ((r = service_load_sysv(s)) < 0)
1138 /* Still nothing found? Then let's give up */
1139 if (u->meta.load_state == UNIT_STUB)
1142 /* We were able to load something, then let's add in the
1143 * dropin directories. */
1144 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
1147 /* This is a new unit? Then let's add in some extras */
1148 if (u->meta.load_state == UNIT_LOADED) {
1149 service_fix_output(s);
1151 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
1154 if ((r = unit_add_default_cgroups(u)) < 0)
1157 #ifdef HAVE_SYSV_COMPAT
1158 if ((r = sysv_fix_order(s)) < 0)
1162 if ((r = fsck_fix_order(s)) < 0)
1166 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
1169 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1170 s->notify_access = NOTIFY_MAIN;
1172 if (s->type == SERVICE_DBUS || s->bus_name)
1173 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true)) < 0)
1176 if (s->meta.default_dependencies)
1177 if ((r = service_add_default_dependencies(s)) < 0)
1181 return service_verify(s);
1184 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1186 ServiceExecCommand c;
1187 Service *s = SERVICE(u);
1188 const char *prefix2;
1193 p2 = strappend(prefix, "\t");
1194 prefix2 = p2 ? p2 : prefix;
1197 "%sService State: %s\n"
1198 "%sPermissionsStartOnly: %s\n"
1199 "%sRootDirectoryStartOnly: %s\n"
1200 "%sRemainAfterExit: %s\n"
1201 "%sGuessMainPID: %s\n"
1204 "%sNotifyAccess: %s\n",
1205 prefix, service_state_to_string(s->state),
1206 prefix, yes_no(s->permissions_start_only),
1207 prefix, yes_no(s->root_directory_start_only),
1208 prefix, yes_no(s->remain_after_exit),
1209 prefix, yes_no(s->guess_main_pid),
1210 prefix, service_type_to_string(s->type),
1211 prefix, service_restart_to_string(s->restart),
1212 prefix, notify_access_to_string(s->notify_access));
1214 if (s->control_pid > 0)
1216 "%sControl PID: %lu\n",
1217 prefix, (unsigned long) s->control_pid);
1219 if (s->main_pid > 0)
1222 "%sMain PID Known: %s\n"
1223 "%sMain PID Alien: %s\n",
1224 prefix, (unsigned long) s->main_pid,
1225 prefix, yes_no(s->main_pid_known),
1226 prefix, yes_no(s->main_pid_alien));
1231 prefix, s->pid_file);
1236 "%sBus Name Good: %s\n",
1237 prefix, s->bus_name,
1238 prefix, yes_no(s->bus_name_good));
1240 exec_context_dump(&s->exec_context, f, prefix);
1242 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1244 if (!s->exec_command[c])
1247 fprintf(f, "%s-> %s:\n",
1248 prefix, service_exec_command_to_string(c));
1250 exec_command_dump_list(s->exec_command[c], f, prefix2);
1253 #ifdef HAVE_SYSV_COMPAT
1256 "%sSysV Init Script Path: %s\n"
1257 "%sSysV Init Script has LSB Header: %s\n"
1258 "%sSysVEnabled: %s\n",
1259 prefix, s->sysv_path,
1260 prefix, yes_no(s->sysv_has_lsb),
1261 prefix, yes_no(s->sysv_enabled));
1263 if (s->sysv_start_priority >= 0)
1265 "%sSysVStartPriority: %i\n",
1266 prefix, s->sysv_start_priority);
1268 if (s->sysv_runlevels)
1269 fprintf(f, "%sSysVRunLevels: %s\n",
1270 prefix, s->sysv_runlevels);
1273 if (s->fsck_passno > 0)
1275 "%sFsckPassNo: %i\n",
1276 prefix, s->fsck_passno);
1279 fprintf(f, "%sStatus Text: %s\n",
1280 prefix, s->status_text);
1285 static int service_load_pid_file(Service *s, bool warn_if_missing) {
1295 if ((r = read_one_line_file(s->pid_file, &k)) < 0) {
1296 if (warn_if_missing)
1297 log_warning("Failed to read PID file %s after %s. The service might be broken.",
1298 s->pid_file, service_state_to_string(s->state));
1302 r = parse_pid(k, &pid);
1308 if (kill(pid, 0) < 0 && errno != EPERM) {
1309 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
1310 (unsigned long) pid, s->pid_file);
1314 if (s->main_pid_known) {
1315 if (pid == s->main_pid)
1318 log_debug("Main PID changing: %lu -> %lu",
1319 (unsigned long) s->main_pid, (unsigned long) pid);
1320 service_unwatch_main_pid(s);
1321 s->main_pid_known = false;
1324 if ((r = service_set_main_pid(s, pid)) < 0)
1327 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1328 /* FIXME: we need to do something here */
1334 static int service_search_main_pid(Service *s) {
1340 /* If we know it anyway, don't ever fallback to unreliable
1342 if (s->main_pid_known)
1345 if (!s->guess_main_pid)
1348 assert(s->main_pid <= 0);
1350 if ((pid = cgroup_bonding_search_main_pid_list(s->meta.cgroup_bondings)) <= 0)
1353 if ((r = service_set_main_pid(s, pid)) < 0)
1356 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1357 /* FIXME: we need to do something here */
1363 static int service_get_sockets(Service *s, Set **_set) {
1372 if (s->socket_fd >= 0)
1375 if (!set_isempty(s->configured_sockets))
1378 /* Collects all Socket objects that belong to this
1379 * service. Note that a service might have multiple sockets
1380 * via multiple names. */
1382 if (!(set = set_new(NULL, NULL)))
1385 SET_FOREACH(t, s->meta.names, i) {
1389 /* Look for all socket objects that go by any of our
1390 * units and collect their fds */
1392 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1397 p = manager_get_unit(s->meta.manager, k);
1403 if ((r = set_put(set, p)) < 0)
1415 static int service_notify_sockets_dead(Service *s) {
1417 Set *set, *free_set = NULL;
1423 /* Notifies all our sockets when we die */
1425 if (s->socket_fd >= 0)
1428 if (!set_isempty(s->configured_sockets))
1429 set = s->configured_sockets;
1431 if ((r = service_get_sockets(s, &free_set)) < 0)
1437 SET_FOREACH(sock, set, i)
1438 socket_notify_service_dead(sock);
1445 static void service_set_state(Service *s, ServiceState state) {
1446 ServiceState old_state;
1449 old_state = s->state;
1452 if (state != SERVICE_START_PRE &&
1453 state != SERVICE_START &&
1454 state != SERVICE_START_POST &&
1455 state != SERVICE_RELOAD &&
1456 state != SERVICE_STOP &&
1457 state != SERVICE_STOP_SIGTERM &&
1458 state != SERVICE_STOP_SIGKILL &&
1459 state != SERVICE_STOP_POST &&
1460 state != SERVICE_FINAL_SIGTERM &&
1461 state != SERVICE_FINAL_SIGKILL &&
1462 state != SERVICE_AUTO_RESTART)
1463 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1465 if (state != SERVICE_START &&
1466 state != SERVICE_START_POST &&
1467 state != SERVICE_RUNNING &&
1468 state != SERVICE_RELOAD &&
1469 state != SERVICE_STOP &&
1470 state != SERVICE_STOP_SIGTERM &&
1471 state != SERVICE_STOP_SIGKILL) {
1472 service_unwatch_main_pid(s);
1473 s->main_command = NULL;
1476 if (state != SERVICE_START_PRE &&
1477 state != SERVICE_START &&
1478 state != SERVICE_START_POST &&
1479 state != SERVICE_RELOAD &&
1480 state != SERVICE_STOP &&
1481 state != SERVICE_STOP_SIGTERM &&
1482 state != SERVICE_STOP_SIGKILL &&
1483 state != SERVICE_STOP_POST &&
1484 state != SERVICE_FINAL_SIGTERM &&
1485 state != SERVICE_FINAL_SIGKILL) {
1486 service_unwatch_control_pid(s);
1487 s->control_command = NULL;
1488 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1491 if (state == SERVICE_DEAD ||
1492 state == SERVICE_STOP ||
1493 state == SERVICE_STOP_SIGTERM ||
1494 state == SERVICE_STOP_SIGKILL ||
1495 state == SERVICE_STOP_POST ||
1496 state == SERVICE_FINAL_SIGTERM ||
1497 state == SERVICE_FINAL_SIGKILL ||
1498 state == SERVICE_FAILED ||
1499 state == SERVICE_AUTO_RESTART)
1500 service_notify_sockets_dead(s);
1502 if (state != SERVICE_START_PRE &&
1503 state != SERVICE_START &&
1504 state != SERVICE_START_POST &&
1505 state != SERVICE_RUNNING &&
1506 state != SERVICE_RELOAD &&
1507 state != SERVICE_STOP &&
1508 state != SERVICE_STOP_SIGTERM &&
1509 state != SERVICE_STOP_SIGKILL &&
1510 state != SERVICE_STOP_POST &&
1511 state != SERVICE_FINAL_SIGTERM &&
1512 state != SERVICE_FINAL_SIGKILL &&
1513 !(state == SERVICE_DEAD && s->meta.job)) {
1514 service_close_socket_fd(s);
1515 service_connection_unref(s);
1518 /* For the inactive states unit_notify() will trim the cgroup,
1519 * but for exit we have to do that ourselves... */
1520 if (state == SERVICE_EXITED && s->meta.manager->n_reloading <= 0)
1521 cgroup_bonding_trim_list(s->meta.cgroup_bondings, true);
1523 if (old_state != state)
1524 log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1526 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], !s->reload_failure);
1527 s->reload_failure = false;
1530 static int service_coldplug(Unit *u) {
1531 Service *s = SERVICE(u);
1535 assert(s->state == SERVICE_DEAD);
1537 if (s->deserialized_state != s->state) {
1539 if (s->deserialized_state == SERVICE_START_PRE ||
1540 s->deserialized_state == SERVICE_START ||
1541 s->deserialized_state == SERVICE_START_POST ||
1542 s->deserialized_state == SERVICE_RELOAD ||
1543 s->deserialized_state == SERVICE_STOP ||
1544 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1545 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1546 s->deserialized_state == SERVICE_STOP_POST ||
1547 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1548 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1549 s->deserialized_state == SERVICE_AUTO_RESTART) {
1551 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1554 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1556 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1561 if ((s->deserialized_state == SERVICE_START &&
1562 (s->type == SERVICE_FORKING ||
1563 s->type == SERVICE_DBUS ||
1564 s->type == SERVICE_ONESHOT ||
1565 s->type == SERVICE_NOTIFY)) ||
1566 s->deserialized_state == SERVICE_START_POST ||
1567 s->deserialized_state == SERVICE_RUNNING ||
1568 s->deserialized_state == SERVICE_RELOAD ||
1569 s->deserialized_state == SERVICE_STOP ||
1570 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1571 s->deserialized_state == SERVICE_STOP_SIGKILL)
1572 if (s->main_pid > 0)
1573 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1576 if (s->deserialized_state == SERVICE_START_PRE ||
1577 s->deserialized_state == SERVICE_START ||
1578 s->deserialized_state == SERVICE_START_POST ||
1579 s->deserialized_state == SERVICE_RELOAD ||
1580 s->deserialized_state == SERVICE_STOP ||
1581 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1582 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1583 s->deserialized_state == SERVICE_STOP_POST ||
1584 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1585 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1586 if (s->control_pid > 0)
1587 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1590 service_set_state(s, s->deserialized_state);
1596 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1600 unsigned rn_fds = 0;
1601 Set *set, *free_set = NULL;
1608 if (s->socket_fd >= 0)
1611 if (!set_isempty(s->configured_sockets))
1612 set = s->configured_sockets;
1614 if ((r = service_get_sockets(s, &free_set)) < 0)
1620 SET_FOREACH(sock, set, i) {
1624 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1636 if (!(t = new(int, rn_fds+cn_fds))) {
1642 memcpy(t, rfds, rn_fds * sizeof(int));
1643 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1648 rn_fds = rn_fds+cn_fds;
1666 static int service_spawn(
1671 bool apply_permissions,
1673 bool apply_tty_stdin,
1674 bool set_notify_socket,
1679 int *fds = NULL, *fdsbuf = NULL;
1680 unsigned n_fds = 0, n_env = 0;
1681 char **argv = NULL, **final_env = NULL, **our_env = NULL;
1688 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1689 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1690 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1692 if (s->socket_fd >= 0) {
1693 fds = &s->socket_fd;
1696 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1703 if (timeout && s->timeout_usec) {
1704 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1707 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1709 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1714 if (!(our_env = new0(char*, 4))) {
1719 if (set_notify_socket)
1720 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", s->meta.manager->notify_socket) < 0) {
1725 if (s->main_pid > 0)
1726 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1731 if (!(final_env = strv_env_merge(2,
1732 s->meta.manager->environment,
1747 s->meta.manager->confirm_spawn,
1748 s->meta.cgroup_bondings,
1749 s->meta.cgroup_attributes,
1756 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1757 /* FIXME: we need to do something here */
1763 strv_free(final_env);
1773 strv_free(final_env);
1776 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1781 static int main_pid_good(Service *s) {
1784 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1787 /* If we know the pid file, then lets just check if it is
1789 if (s->main_pid_known) {
1791 /* If it's an alien child let's check if it is still
1793 if (s->main_pid_alien)
1794 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1796 /* .. otherwise assume we'll get a SIGCHLD for it,
1797 * which we really should wait for to collect exit
1798 * status and code */
1799 return s->main_pid > 0;
1802 /* We don't know the pid */
1806 static int control_pid_good(Service *s) {
1809 return s->control_pid > 0;
1812 static int cgroup_good(Service *s) {
1817 if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0)
1823 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1830 if (allow_restart &&
1831 !s->forbid_restart &&
1832 (s->restart == SERVICE_RESTART_ALWAYS ||
1833 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure) ||
1834 (s->restart == SERVICE_RESTART_ON_FAILURE && s->failure) ||
1835 (s->restart == SERVICE_RESTART_ON_ABORT && s->failure &&
1836 (s->main_exec_status.code == CLD_KILLED ||
1837 s->main_exec_status.code == CLD_DUMPED)))) {
1839 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1842 service_set_state(s, SERVICE_AUTO_RESTART);
1844 service_set_state(s, s->failure ? SERVICE_FAILED : SERVICE_DEAD);
1846 s->forbid_restart = false;
1851 log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r));
1852 service_enter_dead(s, false, false);
1855 static void service_enter_signal(Service *s, ServiceState state, bool success);
1857 static void service_enter_stop_post(Service *s, bool success) {
1864 service_unwatch_control_pid(s);
1866 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1867 s->control_command_id = SERVICE_EXEC_STOP_POST;
1869 if ((r = service_spawn(s,
1873 !s->permissions_start_only,
1874 !s->root_directory_start_only,
1877 &s->control_pid)) < 0)
1881 service_set_state(s, SERVICE_STOP_POST);
1883 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1888 log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
1889 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1892 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1894 Set *pid_set = NULL;
1895 bool wait_for_exit = false;
1902 if (s->exec_context.kill_mode != KILL_NONE) {
1903 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1905 if (s->main_pid > 0) {
1906 if (kill_and_sigcont(s->main_pid, sig) < 0 && errno != ESRCH)
1907 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1909 wait_for_exit = !s->main_pid_alien;
1912 if (s->control_pid > 0) {
1913 if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
1914 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1916 wait_for_exit = true;
1919 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1921 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1926 /* Exclude the main/control pids from being killed via the cgroup */
1927 if (s->main_pid > 0)
1928 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
1931 if (s->control_pid > 0)
1932 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1935 if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig, true, pid_set)) < 0) {
1936 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1937 log_warning("Failed to kill control group: %s", strerror(-r));
1939 wait_for_exit = true;
1946 if (wait_for_exit) {
1947 if (s->timeout_usec > 0)
1948 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1951 service_set_state(s, state);
1952 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1953 service_enter_stop_post(s, true);
1955 service_enter_dead(s, true, true);
1960 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
1962 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1963 service_enter_stop_post(s, false);
1965 service_enter_dead(s, false, true);
1971 static void service_enter_stop(Service *s, bool success) {
1979 service_unwatch_control_pid(s);
1981 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1982 s->control_command_id = SERVICE_EXEC_STOP;
1984 if ((r = service_spawn(s,
1988 !s->permissions_start_only,
1989 !s->root_directory_start_only,
1992 &s->control_pid)) < 0)
1995 service_set_state(s, SERVICE_STOP);
1997 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2002 log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r));
2003 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2006 static void service_enter_running(Service *s, bool success) {
2007 int main_pid_ok, cgroup_ok;
2013 main_pid_ok = main_pid_good(s);
2014 cgroup_ok = cgroup_good(s);
2016 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2017 (s->bus_name_good || s->type != SERVICE_DBUS))
2018 service_set_state(s, SERVICE_RUNNING);
2019 else if (s->remain_after_exit)
2020 service_set_state(s, SERVICE_EXITED);
2022 service_enter_stop(s, true);
2025 static void service_enter_start_post(Service *s) {
2029 service_unwatch_control_pid(s);
2031 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
2032 s->control_command_id = SERVICE_EXEC_START_POST;
2034 if ((r = service_spawn(s,
2038 !s->permissions_start_only,
2039 !s->root_directory_start_only,
2042 &s->control_pid)) < 0)
2045 service_set_state(s, SERVICE_START_POST);
2047 service_enter_running(s, true);
2052 log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
2053 service_enter_stop(s, false);
2056 static void service_enter_start(Service *s) {
2063 assert(s->exec_command[SERVICE_EXEC_START]);
2064 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2066 if (s->type == SERVICE_FORKING)
2067 service_unwatch_control_pid(s);
2069 service_unwatch_main_pid(s);
2071 if (s->type == SERVICE_FORKING) {
2072 s->control_command_id = SERVICE_EXEC_START;
2073 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2075 s->main_command = NULL;
2077 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2078 s->control_command = NULL;
2080 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2083 if ((r = service_spawn(s,
2085 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
2090 s->notify_access != NOTIFY_NONE,
2094 if (s->type == SERVICE_SIMPLE) {
2095 /* For simple services we immediately start
2096 * the START_POST binaries. */
2098 service_set_main_pid(s, pid);
2099 service_enter_start_post(s);
2101 } else if (s->type == SERVICE_FORKING) {
2103 /* For forking services we wait until the start
2104 * process exited. */
2106 s->control_pid = pid;
2107 service_set_state(s, SERVICE_START);
2109 } else if (s->type == SERVICE_ONESHOT ||
2110 s->type == SERVICE_DBUS ||
2111 s->type == SERVICE_NOTIFY) {
2113 /* For oneshot services we wait until the start
2114 * process exited, too, but it is our main process. */
2116 /* For D-Bus services we know the main pid right away,
2117 * but wait for the bus name to appear on the
2118 * bus. Notify services are similar. */
2120 service_set_main_pid(s, pid);
2121 service_set_state(s, SERVICE_START);
2123 assert_not_reached("Unknown service type");
2128 log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r));
2129 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2132 static void service_enter_start_pre(Service *s) {
2137 service_unwatch_control_pid(s);
2139 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
2140 s->control_command_id = SERVICE_EXEC_START_PRE;
2142 if ((r = service_spawn(s,
2146 !s->permissions_start_only,
2147 !s->root_directory_start_only,
2150 &s->control_pid)) < 0)
2153 service_set_state(s, SERVICE_START_PRE);
2155 service_enter_start(s);
2160 log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
2161 service_enter_dead(s, false, true);
2164 static void service_enter_restart(Service *s) {
2169 dbus_error_init(&error);
2172 log_info("Job pending for unit, delaying automatic restart.");
2174 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
2178 service_enter_dead(s, true, false);
2180 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, &error, NULL)) < 0)
2183 log_debug("%s scheduled restart job.", s->meta.id);
2187 log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r));
2188 service_enter_dead(s, false, false);
2190 dbus_error_free(&error);
2193 static void service_enter_reload(Service *s) {
2198 service_unwatch_control_pid(s);
2200 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
2201 s->control_command_id = SERVICE_EXEC_RELOAD;
2203 if ((r = service_spawn(s,
2207 !s->permissions_start_only,
2208 !s->root_directory_start_only,
2211 &s->control_pid)) < 0)
2214 service_set_state(s, SERVICE_RELOAD);
2216 service_enter_running(s, true);
2221 log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r));
2222 s->reload_failure = true;
2223 service_enter_running(s, true);
2226 static void service_run_next_control(Service *s, bool success) {
2230 assert(s->control_command);
2231 assert(s->control_command->command_next);
2236 assert(s->control_command_id != SERVICE_EXEC_START);
2238 s->control_command = s->control_command->command_next;
2239 service_unwatch_control_pid(s);
2241 if ((r = service_spawn(s,
2245 !s->permissions_start_only,
2246 !s->root_directory_start_only,
2247 s->control_command_id == SERVICE_EXEC_START_PRE ||
2248 s->control_command_id == SERVICE_EXEC_STOP_POST,
2250 &s->control_pid)) < 0)
2256 log_warning("%s failed to run next control task: %s", s->meta.id, strerror(-r));
2258 if (s->state == SERVICE_START_PRE)
2259 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2260 else if (s->state == SERVICE_STOP)
2261 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2262 else if (s->state == SERVICE_STOP_POST)
2263 service_enter_dead(s, false, true);
2264 else if (s->state == SERVICE_RELOAD) {
2265 s->reload_failure = true;
2266 service_enter_running(s, true);
2268 service_enter_stop(s, false);
2271 static void service_run_next_main(Service *s, bool success) {
2276 assert(s->main_command);
2277 assert(s->main_command->command_next);
2278 assert(s->type == SERVICE_ONESHOT);
2283 s->main_command = s->main_command->command_next;
2284 service_unwatch_main_pid(s);
2286 if ((r = service_spawn(s,
2293 s->notify_access != NOTIFY_NONE,
2297 service_set_main_pid(s, pid);
2302 log_warning("%s failed to run next main task: %s", s->meta.id, strerror(-r));
2303 service_enter_stop(s, false);
2306 static int service_start(Unit *u) {
2307 Service *s = SERVICE(u);
2311 /* We cannot fulfill this request right now, try again later
2313 if (s->state == SERVICE_STOP ||
2314 s->state == SERVICE_STOP_SIGTERM ||
2315 s->state == SERVICE_STOP_SIGKILL ||
2316 s->state == SERVICE_STOP_POST ||
2317 s->state == SERVICE_FINAL_SIGTERM ||
2318 s->state == SERVICE_FINAL_SIGKILL)
2321 /* Already on it! */
2322 if (s->state == SERVICE_START_PRE ||
2323 s->state == SERVICE_START ||
2324 s->state == SERVICE_START_POST)
2327 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED || s->state == SERVICE_AUTO_RESTART);
2329 /* Make sure we don't enter a busy loop of some kind. */
2330 if (!ratelimit_test(&s->ratelimit)) {
2331 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
2336 s->main_pid_known = false;
2337 s->main_pid_alien = false;
2338 s->forbid_restart = false;
2340 service_enter_start_pre(s);
2344 static int service_stop(Unit *u) {
2345 Service *s = SERVICE(u);
2349 /* This is a user request, so don't do restarts on this
2351 s->forbid_restart = true;
2354 if (s->state == SERVICE_STOP ||
2355 s->state == SERVICE_STOP_SIGTERM ||
2356 s->state == SERVICE_STOP_SIGKILL ||
2357 s->state == SERVICE_STOP_POST ||
2358 s->state == SERVICE_FINAL_SIGTERM ||
2359 s->state == SERVICE_FINAL_SIGKILL)
2362 /* Don't allow a restart */
2363 if (s->state == SERVICE_AUTO_RESTART) {
2364 service_set_state(s, SERVICE_DEAD);
2368 /* If there's already something running we go directly into
2370 if (s->state == SERVICE_START_PRE ||
2371 s->state == SERVICE_START ||
2372 s->state == SERVICE_START_POST ||
2373 s->state == SERVICE_RELOAD) {
2374 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2378 assert(s->state == SERVICE_RUNNING ||
2379 s->state == SERVICE_EXITED);
2381 service_enter_stop(s, true);
2385 static int service_reload(Unit *u) {
2386 Service *s = SERVICE(u);
2390 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2392 service_enter_reload(s);
2396 static bool service_can_reload(Unit *u) {
2397 Service *s = SERVICE(u);
2401 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2404 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2405 Service *s = SERVICE(u);
2411 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2412 unit_serialize_item(u, f, "failure", yes_no(s->failure));
2414 if (s->control_pid > 0)
2415 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2417 if (s->main_pid_known && s->main_pid > 0)
2418 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2420 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2423 unit_serialize_item(u, f, "status-text", s->status_text);
2425 /* There's a minor uncleanliness here: if there are multiple
2426 * commands attached here, we will start from the first one
2428 if (s->control_command_id >= 0)
2429 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2431 if (s->socket_fd >= 0) {
2434 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2437 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2440 if (s->main_exec_status.pid > 0) {
2441 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2442 dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp);
2443 dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp);
2445 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2446 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2447 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2454 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2455 Service *s = SERVICE(u);
2462 if (streq(key, "state")) {
2465 if ((state = service_state_from_string(value)) < 0)
2466 log_debug("Failed to parse state value %s", value);
2468 s->deserialized_state = state;
2469 } else if (streq(key, "failure")) {
2472 if ((b = parse_boolean(value)) < 0)
2473 log_debug("Failed to parse failure value %s", value);
2475 s->failure = b || s->failure;
2476 } else if (streq(key, "control-pid")) {
2479 if (parse_pid(value, &pid) < 0)
2480 log_debug("Failed to parse control-pid value %s", value);
2482 s->control_pid = pid;
2483 } else if (streq(key, "main-pid")) {
2486 if (parse_pid(value, &pid) < 0)
2487 log_debug("Failed to parse main-pid value %s", value);
2489 service_set_main_pid(s, (pid_t) pid);
2490 } else if (streq(key, "main-pid-known")) {
2493 if ((b = parse_boolean(value)) < 0)
2494 log_debug("Failed to parse main-pid-known value %s", value);
2496 s->main_pid_known = b;
2497 } else if (streq(key, "status-text")) {
2500 if ((t = strdup(value))) {
2501 free(s->status_text);
2505 } else if (streq(key, "control-command")) {
2506 ServiceExecCommand id;
2508 if ((id = service_exec_command_from_string(value)) < 0)
2509 log_debug("Failed to parse exec-command value %s", value);
2511 s->control_command_id = id;
2512 s->control_command = s->exec_command[id];
2514 } else if (streq(key, "socket-fd")) {
2517 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2518 log_debug("Failed to parse socket-fd value %s", value);
2521 if (s->socket_fd >= 0)
2522 close_nointr_nofail(s->socket_fd);
2523 s->socket_fd = fdset_remove(fds, fd);
2525 } else if (streq(key, "main-exec-status-pid")) {
2528 if (parse_pid(value, &pid) < 0)
2529 log_debug("Failed to parse main-exec-status-pid value %s", value);
2531 s->main_exec_status.pid = pid;
2532 } else if (streq(key, "main-exec-status-code")) {
2535 if (safe_atoi(value, &i) < 0)
2536 log_debug("Failed to parse main-exec-status-code value %s", value);
2538 s->main_exec_status.code = i;
2539 } else if (streq(key, "main-exec-status-status")) {
2542 if (safe_atoi(value, &i) < 0)
2543 log_debug("Failed to parse main-exec-status-status value %s", value);
2545 s->main_exec_status.status = i;
2546 } else if (streq(key, "main-exec-status-start"))
2547 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2548 else if (streq(key, "main-exec-status-exit"))
2549 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2551 log_debug("Unknown serialization key '%s'", key);
2556 static UnitActiveState service_active_state(Unit *u) {
2559 return state_translation_table[SERVICE(u)->state];
2562 static const char *service_sub_state_to_string(Unit *u) {
2565 return service_state_to_string(SERVICE(u)->state);
2568 static bool service_check_gc(Unit *u) {
2569 Service *s = SERVICE(u);
2573 /* Never clean up services that still have a process around,
2574 * even if the service is formally dead. */
2575 if (cgroup_good(s) > 0 ||
2576 main_pid_good(s) > 0 ||
2577 control_pid_good(s) > 0)
2580 #ifdef HAVE_SYSV_COMPAT
2588 static bool service_check_snapshot(Unit *u) {
2589 Service *s = SERVICE(u);
2593 return !s->got_socket_fd;
2596 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2597 Service *s = SERVICE(u);
2603 if (!s->meta.fragment_path)
2604 success = is_clean_exit_lsb(code, status);
2606 success = is_clean_exit(code, status);
2608 if (s->main_pid == pid) {
2609 /* Forking services may occasionally move to a new PID.
2610 * As long as they update the PID file before exiting the old
2611 * PID, they're fine. */
2612 if (service_load_pid_file(s, false) == 0)
2616 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2618 /* If this is not a forking service than the main
2619 * process got started and hence we copy the exit
2620 * status so that it is recorded both as main and as
2621 * control process exit status */
2622 if (s->main_command) {
2623 s->main_command->exec_status = s->main_exec_status;
2625 if (s->main_command->ignore)
2629 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2630 "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
2631 s->failure = s->failure || !success;
2633 if (s->main_command &&
2634 s->main_command->command_next &&
2637 /* There is another command to *
2638 * execute, so let's do that. */
2640 log_debug("%s running next main command for state %s", u->meta.id, service_state_to_string(s->state));
2641 service_run_next_main(s, success);
2645 /* The service exited, so the service is officially
2647 s->main_command = NULL;
2651 case SERVICE_START_POST:
2652 case SERVICE_RELOAD:
2654 /* Need to wait until the operation is
2659 if (s->type == SERVICE_ONESHOT) {
2660 /* This was our main goal, so let's go on */
2662 service_enter_start_post(s);
2664 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2667 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2672 case SERVICE_RUNNING:
2673 service_enter_running(s, success);
2676 case SERVICE_STOP_SIGTERM:
2677 case SERVICE_STOP_SIGKILL:
2679 if (!control_pid_good(s))
2680 service_enter_stop_post(s, success);
2682 /* If there is still a control process, wait for that first */
2686 assert_not_reached("Uh, main process died at wrong time.");
2690 } else if (s->control_pid == pid) {
2694 if (s->control_command) {
2695 exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
2697 if (s->control_command->ignore)
2701 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2702 "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
2703 s->failure = s->failure || !success;
2705 if (s->control_command &&
2706 s->control_command->command_next &&
2709 /* There is another command to *
2710 * execute, so let's do that. */
2712 log_debug("%s running next control command for state %s", u->meta.id, service_state_to_string(s->state));
2713 service_run_next_control(s, success);
2716 /* No further commands for this step, so let's
2717 * figure out what to do next */
2719 s->control_command = NULL;
2720 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2722 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2726 case SERVICE_START_PRE:
2728 service_enter_start(s);
2730 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2734 assert(s->type == SERVICE_FORKING);
2736 /* Let's try to load the pid
2737 * file here if we can. We
2738 * ignore the return value,
2739 * since the PID file might
2740 * actually be created by a
2741 * START_POST script */
2744 service_load_pid_file(s, !s->exec_command[SERVICE_EXEC_START_POST]);
2745 service_search_main_pid(s);
2747 service_enter_start_post(s);
2749 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2753 case SERVICE_START_POST:
2755 service_load_pid_file(s, true);
2756 service_search_main_pid(s);
2759 s->reload_failure = !success;
2760 service_enter_running(s, true);
2763 case SERVICE_RELOAD:
2765 service_load_pid_file(s, true);
2766 service_search_main_pid(s);
2769 s->reload_failure = !success;
2770 service_enter_running(s, true);
2774 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2777 case SERVICE_STOP_SIGTERM:
2778 case SERVICE_STOP_SIGKILL:
2779 if (main_pid_good(s) <= 0)
2780 service_enter_stop_post(s, success);
2782 /* If there is still a service
2783 * process around, wait until
2784 * that one quit, too */
2787 case SERVICE_STOP_POST:
2788 case SERVICE_FINAL_SIGTERM:
2789 case SERVICE_FINAL_SIGKILL:
2790 service_enter_dead(s, success, true);
2794 assert_not_reached("Uh, control process died at wrong time.");
2799 /* Notify clients about changed exit status */
2800 unit_add_to_dbus_queue(u);
2803 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2804 Service *s = SERVICE(u);
2807 assert(elapsed == 1);
2809 assert(w == &s->timer_watch);
2813 case SERVICE_START_PRE:
2815 log_warning("%s operation timed out. Terminating.", u->meta.id);
2816 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2819 case SERVICE_START_POST:
2820 log_warning("%s operation timed out. Stopping.", u->meta.id);
2821 service_enter_stop(s, false);
2824 case SERVICE_RELOAD:
2825 log_warning("%s operation timed out. Stopping.", u->meta.id);
2826 s->reload_failure = true;
2827 service_enter_running(s, true);
2831 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2832 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2835 case SERVICE_STOP_SIGTERM:
2836 if (s->exec_context.send_sigkill) {
2837 log_warning("%s stopping timed out. Killing.", u->meta.id);
2838 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2840 log_warning("%s stopping timed out. Skipping SIGKILL.", u->meta.id);
2841 service_enter_stop_post(s, false);
2846 case SERVICE_STOP_SIGKILL:
2847 /* Uh, we sent a SIGKILL and it is still not gone?
2848 * Must be something we cannot kill, so let's just be
2849 * weirded out and continue */
2851 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2852 service_enter_stop_post(s, false);
2855 case SERVICE_STOP_POST:
2856 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2857 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2860 case SERVICE_FINAL_SIGTERM:
2861 if (s->exec_context.send_sigkill) {
2862 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2863 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2865 log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->meta.id);
2866 service_enter_dead(s, false, true);
2871 case SERVICE_FINAL_SIGKILL:
2872 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->meta.id);
2873 service_enter_dead(s, false, true);
2876 case SERVICE_AUTO_RESTART:
2877 log_info("%s holdoff time over, scheduling restart.", u->meta.id);
2878 service_enter_restart(s);
2882 assert_not_reached("Timeout at wrong time.");
2886 static void service_cgroup_notify_event(Unit *u) {
2887 Service *s = SERVICE(u);
2891 log_debug("%s: cgroup is empty", u->meta.id);
2895 /* Waiting for SIGCHLD is usually more interesting,
2896 * because it includes return codes/signals. Which is
2897 * why we ignore the cgroup events for most cases,
2898 * except when we don't know pid which to expect the
2901 case SERVICE_RUNNING:
2902 service_enter_running(s, true);
2905 case SERVICE_STOP_SIGTERM:
2906 case SERVICE_STOP_SIGKILL:
2908 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2909 service_enter_stop_post(s, true);
2913 case SERVICE_FINAL_SIGTERM:
2914 case SERVICE_FINAL_SIGKILL:
2915 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2916 service_enter_dead(s, true, true);
2925 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
2926 Service *s = SERVICE(u);
2931 if (s->notify_access == NOTIFY_NONE) {
2932 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
2933 u->meta.id, (unsigned long) pid);
2937 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
2938 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
2939 u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
2943 log_debug("%s: Got message", u->meta.id);
2945 /* Interpret MAINPID= */
2946 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2947 (s->state == SERVICE_START ||
2948 s->state == SERVICE_START_POST ||
2949 s->state == SERVICE_RUNNING ||
2950 s->state == SERVICE_RELOAD)) {
2952 if (parse_pid(e + 8, &pid) < 0)
2953 log_warning("Failed to parse notification message %s", e);
2955 log_debug("%s: got %s", u->meta.id, e);
2956 service_set_main_pid(s, pid);
2960 /* Interpret READY= */
2961 if (s->type == SERVICE_NOTIFY &&
2962 s->state == SERVICE_START &&
2963 strv_find(tags, "READY=1")) {
2964 log_debug("%s: got READY=1", u->meta.id);
2966 service_enter_start_post(s);
2969 /* Interpret STATUS= */
2970 if ((e = strv_find_prefix(tags, "STATUS="))) {
2974 if (!(t = strdup(e+7))) {
2975 log_error("Failed to allocate string.");
2979 log_debug("%s: got %s", u->meta.id, e);
2981 free(s->status_text);
2984 free(s->status_text);
2985 s->status_text = NULL;
2990 /* Notify clients about changed status or main pid */
2991 unit_add_to_dbus_queue(u);
2994 #ifdef HAVE_SYSV_COMPAT
2997 static void sysv_facility_in_insserv_conf(Manager *mgr) {
3001 if (!(f = fopen("/etc/insserv.conf", "re"))) {
3002 r = errno == ENOENT ? 0 : -errno;
3007 char l[LINE_MAX], *t;
3008 char **parsed = NULL;
3010 if (!fgets(l, sizeof(l), f)) {
3015 log_error("Failed to read configuration file '/etc/insserv.conf': %s", strerror(-r));
3020 if (*t != '$' && *t != '<')
3023 parsed = strv_split(t,WHITESPACE);
3024 /* we ignore <interactive>, not used, equivalent to X-Interactive */
3025 if (parsed && !startswith_no_case (parsed[0], "<interactive>")) {
3028 if (sysv_translate_facility(parsed[0], NULL, &facility) < 0)
3030 if ((u = manager_get_unit(mgr, facility)) && (u->meta.type == UNIT_TARGET)) {
3032 char *dep = NULL, *name, **j;
3034 STRV_FOREACH (j, parsed+1) {
3043 if (sysv_translate_facility(name, NULL, &dep) < 0)
3046 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, e, dep, NULL, true);
3061 static int service_enumerate(Manager *m) {
3065 char *path = NULL, *fpath = NULL, *name = NULL;
3066 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
3073 if (m->running_as != MANAGER_SYSTEM)
3076 zero(runlevel_services);
3078 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3079 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3083 path = join(*p, "/", rcnd_table[i].path, NULL);
3092 if (!(d = opendir(path))) {
3093 if (errno != ENOENT)
3094 log_warning("opendir() failed on %s: %s", path, strerror(errno));
3099 while ((de = readdir(d))) {
3102 if (ignore_file(de->d_name))
3105 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3108 if (strlen(de->d_name) < 4)
3111 a = undecchar(de->d_name[1]);
3112 b = undecchar(de->d_name[2]);
3118 fpath = join(path, "/", de->d_name, NULL);
3124 if (access(fpath, X_OK) < 0) {
3126 if (errno != ENOENT)
3127 log_warning("access() failed on %s: %s", fpath, strerror(errno));
3133 if (!(name = sysv_translate_name(de->d_name + 3))) {
3138 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
3139 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3143 if (de->d_name[0] == 'S') {
3145 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
3146 SERVICE(service)->sysv_start_priority_from_rcnd =
3147 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3149 SERVICE(service)->sysv_enabled = true;
3152 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
3155 if ((r = set_put(runlevel_services[i], service)) < 0)
3158 } else if (de->d_name[0] == 'K' &&
3159 (rcnd_table[i].type == RUNLEVEL_DOWN ||
3160 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
3162 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
3165 if ((r = set_put(shutdown_services, service)) < 0)
3171 /* Now we loaded all stubs and are aware of the lowest
3172 start-up priority for all services, not let's actually load
3173 the services, this will also tell us which services are
3174 actually native now */
3175 manager_dispatch_load_queue(m);
3177 /* If this is a native service, rely on native ways to pull in
3178 * a service, don't pull it in via sysv rcN.d links. */
3179 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3180 SET_FOREACH(service, runlevel_services[i], j) {
3181 service = unit_follow_merge(service);
3183 if (service->meta.fragment_path)
3186 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3190 /* We honour K links only for halt/reboot. For the normal
3191 * runlevels we assume the stop jobs will be implicitly added
3192 * by the core logic. Also, we don't really distinguish here
3193 * between the runlevels 0 and 6 and just add them to the
3194 * special shutdown target. On SUSE the boot.d/ runlevel is
3195 * also used for shutdown, so we add links for that too to the
3196 * shutdown target.*/
3197 SET_FOREACH(service, shutdown_services, j) {
3198 service = unit_follow_merge(service);
3200 if (service->meta.fragment_path)
3203 if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
3210 sysv_facility_in_insserv_conf (m);
3218 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3219 set_free(runlevel_services[i]);
3220 set_free(shutdown_services);
3229 static void service_bus_name_owner_change(
3232 const char *old_owner,
3233 const char *new_owner) {
3235 Service *s = SERVICE(u);
3240 assert(streq(s->bus_name, name));
3241 assert(old_owner || new_owner);
3243 if (old_owner && new_owner)
3244 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
3246 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
3248 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
3250 s->bus_name_good = !!new_owner;
3252 if (s->type == SERVICE_DBUS) {
3254 /* service_enter_running() will figure out what to
3256 if (s->state == SERVICE_RUNNING)
3257 service_enter_running(s, true);
3258 else if (s->state == SERVICE_START && new_owner)
3259 service_enter_start_post(s);
3261 } else if (new_owner &&
3263 (s->state == SERVICE_START ||
3264 s->state == SERVICE_START_POST ||
3265 s->state == SERVICE_RUNNING ||
3266 s->state == SERVICE_RELOAD)) {
3268 /* Try to acquire PID from bus service */
3269 log_debug("Trying to acquire PID from D-Bus name...");
3271 bus_query_pid(u->meta.manager, name);
3275 static void service_bus_query_pid_done(
3280 Service *s = SERVICE(u);
3285 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
3287 if (s->main_pid <= 0 &&
3288 (s->state == SERVICE_START ||
3289 s->state == SERVICE_START_POST ||
3290 s->state == SERVICE_RUNNING ||
3291 s->state == SERVICE_RELOAD))
3292 service_set_main_pid(s, pid);
3295 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3299 /* This is called by the socket code when instantiating a new
3300 * service for a stream socket and the socket needs to be
3303 if (s->meta.load_state != UNIT_LOADED)
3306 if (s->socket_fd >= 0)
3309 if (s->state != SERVICE_DEAD)
3313 s->got_socket_fd = true;
3314 s->accept_socket = sock;
3319 static void service_reset_failed(Unit *u) {
3320 Service *s = SERVICE(u);
3324 if (s->state == SERVICE_FAILED)
3325 service_set_state(s, SERVICE_DEAD);
3330 static bool service_need_daemon_reload(Unit *u) {
3331 Service *s = SERVICE(u);
3335 #ifdef HAVE_SYSV_COMPAT
3340 if (stat(s->sysv_path, &st) < 0)
3341 /* What, cannot access this anymore? */
3344 if (s->sysv_mtime > 0 &&
3345 timespec_load(&st.st_mtim) != s->sysv_mtime)
3353 static int service_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
3354 Service *s = SERVICE(u);
3356 Set *pid_set = NULL;
3360 if (s->main_pid <= 0 && who == KILL_MAIN) {
3361 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
3365 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3366 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
3370 if (who == KILL_CONTROL || who == KILL_ALL)
3371 if (s->control_pid > 0)
3372 if (kill(s->control_pid, signo) < 0)
3375 if (who == KILL_MAIN || who == KILL_ALL)
3376 if (s->main_pid > 0)
3377 if (kill(s->main_pid, signo) < 0)
3380 if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
3383 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
3386 /* Exclude the control/main pid from being killed via the cgroup */
3387 if (s->control_pid > 0)
3388 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
3393 if (s->main_pid > 0)
3394 if ((q = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) {
3399 if ((q = cgroup_bonding_kill_list(s->meta.cgroup_bondings, signo, false, pid_set)) < 0)
3400 if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
3411 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3412 [SERVICE_DEAD] = "dead",
3413 [SERVICE_START_PRE] = "start-pre",
3414 [SERVICE_START] = "start",
3415 [SERVICE_START_POST] = "start-post",
3416 [SERVICE_RUNNING] = "running",
3417 [SERVICE_EXITED] = "exited",
3418 [SERVICE_RELOAD] = "reload",
3419 [SERVICE_STOP] = "stop",
3420 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3421 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3422 [SERVICE_STOP_POST] = "stop-post",
3423 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3424 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3425 [SERVICE_FAILED] = "failed",
3426 [SERVICE_AUTO_RESTART] = "auto-restart",
3429 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3431 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3432 [SERVICE_RESTART_NO] = "no",
3433 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3434 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3435 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3436 [SERVICE_RESTART_ALWAYS] = "always"
3439 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3441 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3442 [SERVICE_SIMPLE] = "simple",
3443 [SERVICE_FORKING] = "forking",
3444 [SERVICE_ONESHOT] = "oneshot",
3445 [SERVICE_DBUS] = "dbus",
3446 [SERVICE_NOTIFY] = "notify"
3449 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3451 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3452 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3453 [SERVICE_EXEC_START] = "ExecStart",
3454 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3455 [SERVICE_EXEC_RELOAD] = "ExecReload",
3456 [SERVICE_EXEC_STOP] = "ExecStop",
3457 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3460 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3462 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3463 [NOTIFY_NONE] = "none",
3464 [NOTIFY_MAIN] = "main",
3465 [NOTIFY_ALL] = "all"
3468 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3470 const UnitVTable service_vtable = {
3471 .suffix = ".service",
3476 .show_status = true,
3478 .init = service_init,
3479 .done = service_done,
3480 .load = service_load,
3482 .coldplug = service_coldplug,
3484 .dump = service_dump,
3486 .start = service_start,
3487 .stop = service_stop,
3488 .reload = service_reload,
3490 .can_reload = service_can_reload,
3492 .kill = service_kill,
3494 .serialize = service_serialize,
3495 .deserialize_item = service_deserialize_item,
3497 .active_state = service_active_state,
3498 .sub_state_to_string = service_sub_state_to_string,
3500 .check_gc = service_check_gc,
3501 .check_snapshot = service_check_snapshot,
3503 .sigchld_event = service_sigchld_event,
3504 .timer_event = service_timer_event,
3506 .reset_failed = service_reset_failed,
3508 .need_daemon_reload = service_need_daemon_reload,
3510 .cgroup_notify_empty = service_cgroup_notify_event,
3511 .notify_message = service_notify_message,
3513 .bus_name_owner_change = service_bus_name_owner_change,
3514 .bus_query_pid_done = service_bus_query_pid_done,
3516 .bus_interface = "org.freedesktop.systemd1.Service",
3517 .bus_message_handler = bus_service_message_handler,
3518 .bus_invalidating_properties = bus_service_invalidating_properties,
3520 #ifdef HAVE_SYSV_COMPAT
3521 .enumerate = service_enumerate