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_JOURNAL_AND_CONSOLE;
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 int service_add_socket_dependencies(Service *s) {
1116 /* Make sure we pull in all explicitly configured sockets */
1118 SET_FOREACH(u, s->configured_sockets, i) {
1119 r = unit_add_two_dependencies(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, u, true);
1127 static void service_fix_output(Service *s) {
1130 /* If nothing has been explicitly configured, patch default
1131 * output in. If input is socket/tty we avoid this however,
1132 * since in that case we want output to default to the same
1133 * place as we read input from. */
1135 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1136 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1137 s->exec_context.std_input == EXEC_INPUT_NULL)
1138 s->exec_context.std_error = s->meta.manager->default_std_error;
1140 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1141 s->exec_context.std_input == EXEC_INPUT_NULL)
1142 s->exec_context.std_output = s->meta.manager->default_std_output;
1145 static int service_load(Unit *u) {
1147 Service *s = SERVICE(u);
1151 /* Load a .service file */
1152 if ((r = unit_load_fragment(u)) < 0)
1155 #ifdef HAVE_SYSV_COMPAT
1156 /* Load a classic init script as a fallback, if we couldn't find anything */
1157 if (u->meta.load_state == UNIT_STUB)
1158 if ((r = service_load_sysv(s)) < 0)
1162 /* Still nothing found? Then let's give up */
1163 if (u->meta.load_state == UNIT_STUB)
1166 /* We were able to load something, then let's add in the
1167 * dropin directories. */
1168 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
1171 /* This is a new unit? Then let's add in some extras */
1172 if (u->meta.load_state == UNIT_LOADED) {
1173 service_fix_output(s);
1175 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
1178 if ((r = unit_add_default_cgroups(u)) < 0)
1181 #ifdef HAVE_SYSV_COMPAT
1182 if ((r = sysv_fix_order(s)) < 0)
1186 if ((r = fsck_fix_order(s)) < 0)
1190 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
1193 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1194 s->notify_access = NOTIFY_MAIN;
1196 if (s->type == SERVICE_DBUS || s->bus_name)
1197 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true)) < 0)
1200 if (!set_isempty(s->configured_sockets)) {
1201 r = service_add_socket_dependencies(s);
1206 if (s->meta.default_dependencies)
1207 if ((r = service_add_default_dependencies(s)) < 0)
1211 return service_verify(s);
1214 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1216 ServiceExecCommand c;
1217 Service *s = SERVICE(u);
1218 const char *prefix2;
1223 p2 = strappend(prefix, "\t");
1224 prefix2 = p2 ? p2 : prefix;
1227 "%sService State: %s\n"
1228 "%sPermissionsStartOnly: %s\n"
1229 "%sRootDirectoryStartOnly: %s\n"
1230 "%sRemainAfterExit: %s\n"
1231 "%sGuessMainPID: %s\n"
1234 "%sNotifyAccess: %s\n",
1235 prefix, service_state_to_string(s->state),
1236 prefix, yes_no(s->permissions_start_only),
1237 prefix, yes_no(s->root_directory_start_only),
1238 prefix, yes_no(s->remain_after_exit),
1239 prefix, yes_no(s->guess_main_pid),
1240 prefix, service_type_to_string(s->type),
1241 prefix, service_restart_to_string(s->restart),
1242 prefix, notify_access_to_string(s->notify_access));
1244 if (s->control_pid > 0)
1246 "%sControl PID: %lu\n",
1247 prefix, (unsigned long) s->control_pid);
1249 if (s->main_pid > 0)
1252 "%sMain PID Known: %s\n"
1253 "%sMain PID Alien: %s\n",
1254 prefix, (unsigned long) s->main_pid,
1255 prefix, yes_no(s->main_pid_known),
1256 prefix, yes_no(s->main_pid_alien));
1261 prefix, s->pid_file);
1266 "%sBus Name Good: %s\n",
1267 prefix, s->bus_name,
1268 prefix, yes_no(s->bus_name_good));
1270 exec_context_dump(&s->exec_context, f, prefix);
1272 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1274 if (!s->exec_command[c])
1277 fprintf(f, "%s-> %s:\n",
1278 prefix, service_exec_command_to_string(c));
1280 exec_command_dump_list(s->exec_command[c], f, prefix2);
1283 #ifdef HAVE_SYSV_COMPAT
1286 "%sSysV Init Script Path: %s\n"
1287 "%sSysV Init Script has LSB Header: %s\n"
1288 "%sSysVEnabled: %s\n",
1289 prefix, s->sysv_path,
1290 prefix, yes_no(s->sysv_has_lsb),
1291 prefix, yes_no(s->sysv_enabled));
1293 if (s->sysv_start_priority >= 0)
1295 "%sSysVStartPriority: %i\n",
1296 prefix, s->sysv_start_priority);
1298 if (s->sysv_runlevels)
1299 fprintf(f, "%sSysVRunLevels: %s\n",
1300 prefix, s->sysv_runlevels);
1303 if (s->fsck_passno > 0)
1305 "%sFsckPassNo: %i\n",
1306 prefix, s->fsck_passno);
1309 fprintf(f, "%sStatus Text: %s\n",
1310 prefix, s->status_text);
1315 static int service_load_pid_file(Service *s, bool may_warn) {
1325 if ((r = read_one_line_file(s->pid_file, &k)) < 0) {
1327 log_info("PID file %s not readable (yet?) after %s.",
1328 s->pid_file, service_state_to_string(s->state));
1332 r = parse_pid(k, &pid);
1338 if (kill(pid, 0) < 0 && errno != EPERM) {
1340 log_info("PID %lu read from file %s does not exist.",
1341 (unsigned long) pid, s->pid_file);
1345 if (s->main_pid_known) {
1346 if (pid == s->main_pid)
1349 log_debug("Main PID changing: %lu -> %lu",
1350 (unsigned long) s->main_pid, (unsigned long) pid);
1351 service_unwatch_main_pid(s);
1352 s->main_pid_known = false;
1354 log_debug("Main PID loaded: %lu", (unsigned long) pid);
1356 if ((r = service_set_main_pid(s, pid)) < 0)
1359 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1360 /* FIXME: we need to do something here */
1366 static int service_search_main_pid(Service *s) {
1372 /* If we know it anyway, don't ever fallback to unreliable
1374 if (s->main_pid_known)
1377 if (!s->guess_main_pid)
1380 assert(s->main_pid <= 0);
1382 if ((pid = cgroup_bonding_search_main_pid_list(s->meta.cgroup_bondings)) <= 0)
1385 log_debug("Main PID guessed: %lu", (unsigned long) pid);
1386 if ((r = service_set_main_pid(s, pid)) < 0)
1389 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1390 /* FIXME: we need to do something here */
1396 static int service_get_sockets(Service *s, Set **_set) {
1405 if (s->socket_fd >= 0)
1408 if (!set_isempty(s->configured_sockets))
1411 /* Collects all Socket objects that belong to this
1412 * service. Note that a service might have multiple sockets
1413 * via multiple names. */
1415 if (!(set = set_new(NULL, NULL)))
1418 SET_FOREACH(t, s->meta.names, i) {
1422 /* Look for all socket objects that go by any of our
1423 * units and collect their fds */
1425 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1430 p = manager_get_unit(s->meta.manager, k);
1436 if ((r = set_put(set, p)) < 0)
1448 static int service_notify_sockets_dead(Service *s) {
1450 Set *set, *free_set = NULL;
1456 /* Notifies all our sockets when we die */
1458 if (s->socket_fd >= 0)
1461 if (!set_isempty(s->configured_sockets))
1462 set = s->configured_sockets;
1464 if ((r = service_get_sockets(s, &free_set)) < 0)
1470 SET_FOREACH(sock, set, i)
1471 socket_notify_service_dead(sock);
1478 static void service_unwatch_pid_file(Service *s) {
1479 if (!s->pid_file_pathspec)
1482 log_debug("Stopping watch for %s's PID file %s", s->meta.id, s->pid_file_pathspec->path);
1483 pathspec_unwatch(s->pid_file_pathspec, UNIT(s));
1484 pathspec_done(s->pid_file_pathspec);
1485 free(s->pid_file_pathspec);
1486 s->pid_file_pathspec = NULL;
1489 static void service_set_state(Service *s, ServiceState state) {
1490 ServiceState old_state;
1493 old_state = s->state;
1496 service_unwatch_pid_file(s);
1498 if (state != SERVICE_START_PRE &&
1499 state != SERVICE_START &&
1500 state != SERVICE_START_POST &&
1501 state != SERVICE_RELOAD &&
1502 state != SERVICE_STOP &&
1503 state != SERVICE_STOP_SIGTERM &&
1504 state != SERVICE_STOP_SIGKILL &&
1505 state != SERVICE_STOP_POST &&
1506 state != SERVICE_FINAL_SIGTERM &&
1507 state != SERVICE_FINAL_SIGKILL &&
1508 state != SERVICE_AUTO_RESTART)
1509 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1511 if (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 service_unwatch_main_pid(s);
1519 s->main_command = NULL;
1522 if (state != SERVICE_START_PRE &&
1523 state != SERVICE_START &&
1524 state != SERVICE_START_POST &&
1525 state != SERVICE_RELOAD &&
1526 state != SERVICE_STOP &&
1527 state != SERVICE_STOP_SIGTERM &&
1528 state != SERVICE_STOP_SIGKILL &&
1529 state != SERVICE_STOP_POST &&
1530 state != SERVICE_FINAL_SIGTERM &&
1531 state != SERVICE_FINAL_SIGKILL) {
1532 service_unwatch_control_pid(s);
1533 s->control_command = NULL;
1534 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1537 if (state == SERVICE_DEAD ||
1538 state == SERVICE_STOP ||
1539 state == SERVICE_STOP_SIGTERM ||
1540 state == SERVICE_STOP_SIGKILL ||
1541 state == SERVICE_STOP_POST ||
1542 state == SERVICE_FINAL_SIGTERM ||
1543 state == SERVICE_FINAL_SIGKILL ||
1544 state == SERVICE_FAILED ||
1545 state == SERVICE_AUTO_RESTART)
1546 service_notify_sockets_dead(s);
1548 if (state != SERVICE_START_PRE &&
1549 state != SERVICE_START &&
1550 state != SERVICE_START_POST &&
1551 state != SERVICE_RUNNING &&
1552 state != SERVICE_RELOAD &&
1553 state != SERVICE_STOP &&
1554 state != SERVICE_STOP_SIGTERM &&
1555 state != SERVICE_STOP_SIGKILL &&
1556 state != SERVICE_STOP_POST &&
1557 state != SERVICE_FINAL_SIGTERM &&
1558 state != SERVICE_FINAL_SIGKILL &&
1559 !(state == SERVICE_DEAD && s->meta.job)) {
1560 service_close_socket_fd(s);
1561 service_connection_unref(s);
1564 /* For the inactive states unit_notify() will trim the cgroup,
1565 * but for exit we have to do that ourselves... */
1566 if (state == SERVICE_EXITED && s->meta.manager->n_reloading <= 0)
1567 cgroup_bonding_trim_list(s->meta.cgroup_bondings, true);
1569 if (old_state != state)
1570 log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1572 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], !s->reload_failure);
1573 s->reload_failure = false;
1576 static int service_coldplug(Unit *u) {
1577 Service *s = SERVICE(u);
1581 assert(s->state == SERVICE_DEAD);
1583 if (s->deserialized_state != s->state) {
1585 if (s->deserialized_state == SERVICE_START_PRE ||
1586 s->deserialized_state == SERVICE_START ||
1587 s->deserialized_state == SERVICE_START_POST ||
1588 s->deserialized_state == SERVICE_RELOAD ||
1589 s->deserialized_state == SERVICE_STOP ||
1590 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1591 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1592 s->deserialized_state == SERVICE_STOP_POST ||
1593 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1594 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1595 s->deserialized_state == SERVICE_AUTO_RESTART) {
1597 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1600 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1602 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1607 if ((s->deserialized_state == SERVICE_START &&
1608 (s->type == SERVICE_FORKING ||
1609 s->type == SERVICE_DBUS ||
1610 s->type == SERVICE_ONESHOT ||
1611 s->type == SERVICE_NOTIFY)) ||
1612 s->deserialized_state == SERVICE_START_POST ||
1613 s->deserialized_state == SERVICE_RUNNING ||
1614 s->deserialized_state == SERVICE_RELOAD ||
1615 s->deserialized_state == SERVICE_STOP ||
1616 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1617 s->deserialized_state == SERVICE_STOP_SIGKILL)
1618 if (s->main_pid > 0)
1619 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1622 if (s->deserialized_state == SERVICE_START_PRE ||
1623 s->deserialized_state == SERVICE_START ||
1624 s->deserialized_state == SERVICE_START_POST ||
1625 s->deserialized_state == SERVICE_RELOAD ||
1626 s->deserialized_state == SERVICE_STOP ||
1627 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1628 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1629 s->deserialized_state == SERVICE_STOP_POST ||
1630 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1631 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1632 if (s->control_pid > 0)
1633 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1636 service_set_state(s, s->deserialized_state);
1642 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1646 unsigned rn_fds = 0;
1647 Set *set, *free_set = NULL;
1654 if (s->socket_fd >= 0)
1657 if (!set_isempty(s->configured_sockets))
1658 set = s->configured_sockets;
1660 if ((r = service_get_sockets(s, &free_set)) < 0)
1666 SET_FOREACH(sock, set, i) {
1670 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1682 if (!(t = new(int, rn_fds+cn_fds))) {
1688 memcpy(t, rfds, rn_fds * sizeof(int));
1689 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1694 rn_fds = rn_fds+cn_fds;
1712 static int service_spawn(
1717 bool apply_permissions,
1719 bool apply_tty_stdin,
1720 bool set_notify_socket,
1725 int *fds = NULL, *fdsbuf = NULL;
1726 unsigned n_fds = 0, n_env = 0;
1727 char **argv = NULL, **final_env = NULL, **our_env = NULL;
1734 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1735 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1736 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1738 if (s->socket_fd >= 0) {
1739 fds = &s->socket_fd;
1742 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1749 if (timeout && s->timeout_usec) {
1750 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1753 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1755 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1760 if (!(our_env = new0(char*, 4))) {
1765 if (set_notify_socket)
1766 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", s->meta.manager->notify_socket) < 0) {
1771 if (s->main_pid > 0)
1772 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1777 if (!(final_env = strv_env_merge(2,
1778 s->meta.manager->environment,
1793 s->meta.manager->confirm_spawn,
1794 s->meta.cgroup_bondings,
1795 s->meta.cgroup_attributes,
1802 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1803 /* FIXME: we need to do something here */
1809 strv_free(final_env);
1819 strv_free(final_env);
1822 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1827 static int main_pid_good(Service *s) {
1830 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1833 /* If we know the pid file, then lets just check if it is
1835 if (s->main_pid_known) {
1837 /* If it's an alien child let's check if it is still
1839 if (s->main_pid_alien)
1840 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1842 /* .. otherwise assume we'll get a SIGCHLD for it,
1843 * which we really should wait for to collect exit
1844 * status and code */
1845 return s->main_pid > 0;
1848 /* We don't know the pid */
1852 static int control_pid_good(Service *s) {
1855 return s->control_pid > 0;
1858 static int cgroup_good(Service *s) {
1863 if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0)
1869 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1876 if (allow_restart &&
1877 !s->forbid_restart &&
1878 (s->restart == SERVICE_RESTART_ALWAYS ||
1879 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure) ||
1880 (s->restart == SERVICE_RESTART_ON_FAILURE && s->failure) ||
1881 (s->restart == SERVICE_RESTART_ON_ABORT && s->failure &&
1882 (s->main_exec_status.code == CLD_KILLED ||
1883 s->main_exec_status.code == CLD_DUMPED)))) {
1885 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1888 service_set_state(s, SERVICE_AUTO_RESTART);
1890 service_set_state(s, s->failure ? SERVICE_FAILED : SERVICE_DEAD);
1892 s->forbid_restart = false;
1897 log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r));
1898 service_enter_dead(s, false, false);
1901 static void service_enter_signal(Service *s, ServiceState state, bool success);
1903 static void service_enter_stop_post(Service *s, bool success) {
1910 service_unwatch_control_pid(s);
1912 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1913 s->control_command_id = SERVICE_EXEC_STOP_POST;
1915 if ((r = service_spawn(s,
1919 !s->permissions_start_only,
1920 !s->root_directory_start_only,
1923 &s->control_pid)) < 0)
1927 service_set_state(s, SERVICE_STOP_POST);
1929 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1934 log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
1935 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1938 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1940 Set *pid_set = NULL;
1941 bool wait_for_exit = false;
1948 if (s->exec_context.kill_mode != KILL_NONE) {
1949 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1951 if (s->main_pid > 0) {
1952 if (kill_and_sigcont(s->main_pid, sig) < 0 && errno != ESRCH)
1953 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1955 wait_for_exit = !s->main_pid_alien;
1958 if (s->control_pid > 0) {
1959 if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
1960 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1962 wait_for_exit = true;
1965 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1967 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1972 /* Exclude the main/control pids from being killed via the cgroup */
1973 if (s->main_pid > 0)
1974 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
1977 if (s->control_pid > 0)
1978 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1981 if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig, true, pid_set)) < 0) {
1982 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1983 log_warning("Failed to kill control group: %s", strerror(-r));
1985 wait_for_exit = true;
1992 if (wait_for_exit) {
1993 if (s->timeout_usec > 0)
1994 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1997 service_set_state(s, state);
1998 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1999 service_enter_stop_post(s, true);
2001 service_enter_dead(s, true, true);
2006 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
2008 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
2009 service_enter_stop_post(s, false);
2011 service_enter_dead(s, false, true);
2017 static void service_enter_stop(Service *s, bool success) {
2025 service_unwatch_control_pid(s);
2027 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
2028 s->control_command_id = SERVICE_EXEC_STOP;
2030 if ((r = service_spawn(s,
2034 !s->permissions_start_only,
2035 !s->root_directory_start_only,
2038 &s->control_pid)) < 0)
2041 service_set_state(s, SERVICE_STOP);
2043 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2048 log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r));
2049 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2052 static void service_enter_running(Service *s, bool success) {
2053 int main_pid_ok, cgroup_ok;
2059 main_pid_ok = main_pid_good(s);
2060 cgroup_ok = cgroup_good(s);
2062 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2063 (s->bus_name_good || s->type != SERVICE_DBUS))
2064 service_set_state(s, SERVICE_RUNNING);
2065 else if (s->remain_after_exit)
2066 service_set_state(s, SERVICE_EXITED);
2068 service_enter_stop(s, true);
2071 static void service_enter_start_post(Service *s) {
2075 service_unwatch_control_pid(s);
2077 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
2078 s->control_command_id = SERVICE_EXEC_START_POST;
2080 if ((r = service_spawn(s,
2084 !s->permissions_start_only,
2085 !s->root_directory_start_only,
2088 &s->control_pid)) < 0)
2091 service_set_state(s, SERVICE_START_POST);
2093 service_enter_running(s, true);
2098 log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
2099 service_enter_stop(s, false);
2102 static void service_enter_start(Service *s) {
2109 assert(s->exec_command[SERVICE_EXEC_START]);
2110 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2112 if (s->type == SERVICE_FORKING)
2113 service_unwatch_control_pid(s);
2115 service_unwatch_main_pid(s);
2117 if (s->type == SERVICE_FORKING) {
2118 s->control_command_id = SERVICE_EXEC_START;
2119 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2121 s->main_command = NULL;
2123 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2124 s->control_command = NULL;
2126 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2129 if ((r = service_spawn(s,
2131 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
2136 s->notify_access != NOTIFY_NONE,
2140 if (s->type == SERVICE_SIMPLE) {
2141 /* For simple services we immediately start
2142 * the START_POST binaries. */
2144 service_set_main_pid(s, pid);
2145 service_enter_start_post(s);
2147 } else if (s->type == SERVICE_FORKING) {
2149 /* For forking services we wait until the start
2150 * process exited. */
2152 s->control_pid = pid;
2153 service_set_state(s, SERVICE_START);
2155 } else if (s->type == SERVICE_ONESHOT ||
2156 s->type == SERVICE_DBUS ||
2157 s->type == SERVICE_NOTIFY) {
2159 /* For oneshot services we wait until the start
2160 * process exited, too, but it is our main process. */
2162 /* For D-Bus services we know the main pid right away,
2163 * but wait for the bus name to appear on the
2164 * bus. Notify services are similar. */
2166 service_set_main_pid(s, pid);
2167 service_set_state(s, SERVICE_START);
2169 assert_not_reached("Unknown service type");
2174 log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r));
2175 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2178 static void service_enter_start_pre(Service *s) {
2183 service_unwatch_control_pid(s);
2185 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
2186 s->control_command_id = SERVICE_EXEC_START_PRE;
2188 if ((r = service_spawn(s,
2192 !s->permissions_start_only,
2193 !s->root_directory_start_only,
2196 &s->control_pid)) < 0)
2199 service_set_state(s, SERVICE_START_PRE);
2201 service_enter_start(s);
2206 log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
2207 service_enter_dead(s, false, true);
2210 static void service_enter_restart(Service *s) {
2215 dbus_error_init(&error);
2218 log_info("Job pending for unit, delaying automatic restart.");
2220 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
2224 service_enter_dead(s, true, false);
2226 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, &error, NULL)) < 0)
2229 log_debug("%s scheduled restart job.", s->meta.id);
2233 log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r));
2234 service_enter_dead(s, false, false);
2236 dbus_error_free(&error);
2239 static void service_enter_reload(Service *s) {
2244 service_unwatch_control_pid(s);
2246 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
2247 s->control_command_id = SERVICE_EXEC_RELOAD;
2249 if ((r = service_spawn(s,
2253 !s->permissions_start_only,
2254 !s->root_directory_start_only,
2257 &s->control_pid)) < 0)
2260 service_set_state(s, SERVICE_RELOAD);
2262 service_enter_running(s, true);
2267 log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r));
2268 s->reload_failure = true;
2269 service_enter_running(s, true);
2272 static void service_run_next_control(Service *s, bool success) {
2276 assert(s->control_command);
2277 assert(s->control_command->command_next);
2282 assert(s->control_command_id != SERVICE_EXEC_START);
2284 s->control_command = s->control_command->command_next;
2285 service_unwatch_control_pid(s);
2287 if ((r = service_spawn(s,
2291 !s->permissions_start_only,
2292 !s->root_directory_start_only,
2293 s->control_command_id == SERVICE_EXEC_START_PRE ||
2294 s->control_command_id == SERVICE_EXEC_STOP_POST,
2296 &s->control_pid)) < 0)
2302 log_warning("%s failed to run next control task: %s", s->meta.id, strerror(-r));
2304 if (s->state == SERVICE_START_PRE)
2305 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2306 else if (s->state == SERVICE_STOP)
2307 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2308 else if (s->state == SERVICE_STOP_POST)
2309 service_enter_dead(s, false, true);
2310 else if (s->state == SERVICE_RELOAD) {
2311 s->reload_failure = true;
2312 service_enter_running(s, true);
2314 service_enter_stop(s, false);
2317 static void service_run_next_main(Service *s, bool success) {
2322 assert(s->main_command);
2323 assert(s->main_command->command_next);
2324 assert(s->type == SERVICE_ONESHOT);
2329 s->main_command = s->main_command->command_next;
2330 service_unwatch_main_pid(s);
2332 if ((r = service_spawn(s,
2339 s->notify_access != NOTIFY_NONE,
2343 service_set_main_pid(s, pid);
2348 log_warning("%s failed to run next main task: %s", s->meta.id, strerror(-r));
2349 service_enter_stop(s, false);
2352 static int service_start(Unit *u) {
2353 Service *s = SERVICE(u);
2357 /* We cannot fulfill this request right now, try again later
2359 if (s->state == SERVICE_STOP ||
2360 s->state == SERVICE_STOP_SIGTERM ||
2361 s->state == SERVICE_STOP_SIGKILL ||
2362 s->state == SERVICE_STOP_POST ||
2363 s->state == SERVICE_FINAL_SIGTERM ||
2364 s->state == SERVICE_FINAL_SIGKILL)
2367 /* Already on it! */
2368 if (s->state == SERVICE_START_PRE ||
2369 s->state == SERVICE_START ||
2370 s->state == SERVICE_START_POST)
2373 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED || s->state == SERVICE_AUTO_RESTART);
2375 /* Make sure we don't enter a busy loop of some kind. */
2376 if (!ratelimit_test(&s->ratelimit)) {
2377 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
2382 s->main_pid_known = false;
2383 s->main_pid_alien = false;
2384 s->forbid_restart = false;
2386 service_enter_start_pre(s);
2390 static int service_stop(Unit *u) {
2391 Service *s = SERVICE(u);
2395 /* This is a user request, so don't do restarts on this
2397 s->forbid_restart = true;
2400 if (s->state == SERVICE_STOP ||
2401 s->state == SERVICE_STOP_SIGTERM ||
2402 s->state == SERVICE_STOP_SIGKILL ||
2403 s->state == SERVICE_STOP_POST ||
2404 s->state == SERVICE_FINAL_SIGTERM ||
2405 s->state == SERVICE_FINAL_SIGKILL)
2408 /* Don't allow a restart */
2409 if (s->state == SERVICE_AUTO_RESTART) {
2410 service_set_state(s, SERVICE_DEAD);
2414 /* If there's already something running we go directly into
2416 if (s->state == SERVICE_START_PRE ||
2417 s->state == SERVICE_START ||
2418 s->state == SERVICE_START_POST ||
2419 s->state == SERVICE_RELOAD) {
2420 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2424 assert(s->state == SERVICE_RUNNING ||
2425 s->state == SERVICE_EXITED);
2427 service_enter_stop(s, true);
2431 static int service_reload(Unit *u) {
2432 Service *s = SERVICE(u);
2436 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2438 service_enter_reload(s);
2442 static bool service_can_reload(Unit *u) {
2443 Service *s = SERVICE(u);
2447 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2450 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2451 Service *s = SERVICE(u);
2457 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2458 unit_serialize_item(u, f, "failure", yes_no(s->failure));
2460 if (s->control_pid > 0)
2461 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2463 if (s->main_pid_known && s->main_pid > 0)
2464 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2466 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2469 unit_serialize_item(u, f, "status-text", s->status_text);
2471 /* There's a minor uncleanliness here: if there are multiple
2472 * commands attached here, we will start from the first one
2474 if (s->control_command_id >= 0)
2475 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2477 if (s->socket_fd >= 0) {
2480 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2483 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2486 if (s->main_exec_status.pid > 0) {
2487 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2488 dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp);
2489 dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp);
2491 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2492 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2493 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2500 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2501 Service *s = SERVICE(u);
2508 if (streq(key, "state")) {
2511 if ((state = service_state_from_string(value)) < 0)
2512 log_debug("Failed to parse state value %s", value);
2514 s->deserialized_state = state;
2515 } else if (streq(key, "failure")) {
2518 if ((b = parse_boolean(value)) < 0)
2519 log_debug("Failed to parse failure value %s", value);
2521 s->failure = b || s->failure;
2522 } else if (streq(key, "control-pid")) {
2525 if (parse_pid(value, &pid) < 0)
2526 log_debug("Failed to parse control-pid value %s", value);
2528 s->control_pid = pid;
2529 } else if (streq(key, "main-pid")) {
2532 if (parse_pid(value, &pid) < 0)
2533 log_debug("Failed to parse main-pid value %s", value);
2535 service_set_main_pid(s, (pid_t) pid);
2536 } else if (streq(key, "main-pid-known")) {
2539 if ((b = parse_boolean(value)) < 0)
2540 log_debug("Failed to parse main-pid-known value %s", value);
2542 s->main_pid_known = b;
2543 } else if (streq(key, "status-text")) {
2546 if ((t = strdup(value))) {
2547 free(s->status_text);
2551 } else if (streq(key, "control-command")) {
2552 ServiceExecCommand id;
2554 if ((id = service_exec_command_from_string(value)) < 0)
2555 log_debug("Failed to parse exec-command value %s", value);
2557 s->control_command_id = id;
2558 s->control_command = s->exec_command[id];
2560 } else if (streq(key, "socket-fd")) {
2563 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2564 log_debug("Failed to parse socket-fd value %s", value);
2567 if (s->socket_fd >= 0)
2568 close_nointr_nofail(s->socket_fd);
2569 s->socket_fd = fdset_remove(fds, fd);
2571 } else if (streq(key, "main-exec-status-pid")) {
2574 if (parse_pid(value, &pid) < 0)
2575 log_debug("Failed to parse main-exec-status-pid value %s", value);
2577 s->main_exec_status.pid = pid;
2578 } else if (streq(key, "main-exec-status-code")) {
2581 if (safe_atoi(value, &i) < 0)
2582 log_debug("Failed to parse main-exec-status-code value %s", value);
2584 s->main_exec_status.code = i;
2585 } else if (streq(key, "main-exec-status-status")) {
2588 if (safe_atoi(value, &i) < 0)
2589 log_debug("Failed to parse main-exec-status-status value %s", value);
2591 s->main_exec_status.status = i;
2592 } else if (streq(key, "main-exec-status-start"))
2593 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2594 else if (streq(key, "main-exec-status-exit"))
2595 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2597 log_debug("Unknown serialization key '%s'", key);
2602 static UnitActiveState service_active_state(Unit *u) {
2605 return state_translation_table[SERVICE(u)->state];
2608 static const char *service_sub_state_to_string(Unit *u) {
2611 return service_state_to_string(SERVICE(u)->state);
2614 static bool service_check_gc(Unit *u) {
2615 Service *s = SERVICE(u);
2619 /* Never clean up services that still have a process around,
2620 * even if the service is formally dead. */
2621 if (cgroup_good(s) > 0 ||
2622 main_pid_good(s) > 0 ||
2623 control_pid_good(s) > 0)
2626 #ifdef HAVE_SYSV_COMPAT
2634 static bool service_check_snapshot(Unit *u) {
2635 Service *s = SERVICE(u);
2639 return !s->got_socket_fd;
2642 static int service_retry_pid_file(Service *s) {
2645 assert(s->pid_file);
2646 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2648 r = service_load_pid_file(s, false);
2652 service_unwatch_pid_file(s);
2654 service_enter_running(s, true);
2658 static int service_watch_pid_file(Service *s) {
2661 log_debug("Setting watch for %s's PID file %s", s->meta.id, s->pid_file_pathspec->path);
2662 r = pathspec_watch(s->pid_file_pathspec, UNIT(s));
2666 /* the pidfile might have appeared just before we set the watch */
2667 service_retry_pid_file(s);
2671 log_error("Failed to set a watch for %s's PID file %s: %s",
2672 s->meta.id, s->pid_file_pathspec->path, strerror(-r));
2673 service_unwatch_pid_file(s);
2677 static int service_demand_pid_file(Service *s) {
2680 assert(s->pid_file);
2681 assert(!s->pid_file_pathspec);
2683 ps = new0(PathSpec, 1);
2687 ps->path = strdup(s->pid_file);
2693 path_kill_slashes(ps->path);
2695 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2696 * keep their PID file open all the time. */
2697 ps->type = PATH_MODIFIED;
2698 ps->inotify_fd = -1;
2700 s->pid_file_pathspec = ps;
2702 return service_watch_pid_file(s);
2705 static void service_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
2706 Service *s = SERVICE(u);
2710 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2711 assert(s->pid_file_pathspec);
2712 assert(pathspec_owns_inotify_fd(s->pid_file_pathspec, fd));
2714 log_debug("inotify event for %s", u->meta.id);
2716 if (pathspec_fd_event(s->pid_file_pathspec, events) < 0)
2719 if (service_retry_pid_file(s) == 0)
2722 if (service_watch_pid_file(s) < 0)
2727 service_unwatch_pid_file(s);
2728 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2731 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2732 Service *s = SERVICE(u);
2738 if (!s->meta.fragment_path)
2739 success = is_clean_exit_lsb(code, status);
2741 success = is_clean_exit(code, status);
2743 if (s->main_pid == pid) {
2744 /* Forking services may occasionally move to a new PID.
2745 * As long as they update the PID file before exiting the old
2746 * PID, they're fine. */
2747 if (service_load_pid_file(s, false) == 0)
2751 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2753 /* If this is not a forking service than the main
2754 * process got started and hence we copy the exit
2755 * status so that it is recorded both as main and as
2756 * control process exit status */
2757 if (s->main_command) {
2758 s->main_command->exec_status = s->main_exec_status;
2760 if (s->main_command->ignore)
2764 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2765 "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
2766 s->failure = s->failure || !success;
2768 if (s->main_command &&
2769 s->main_command->command_next &&
2772 /* There is another command to *
2773 * execute, so let's do that. */
2775 log_debug("%s running next main command for state %s", u->meta.id, service_state_to_string(s->state));
2776 service_run_next_main(s, success);
2780 /* The service exited, so the service is officially
2782 s->main_command = NULL;
2786 case SERVICE_START_POST:
2787 case SERVICE_RELOAD:
2789 /* Need to wait until the operation is
2794 if (s->type == SERVICE_ONESHOT) {
2795 /* This was our main goal, so let's go on */
2797 service_enter_start_post(s);
2799 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2802 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2807 case SERVICE_RUNNING:
2808 service_enter_running(s, success);
2811 case SERVICE_STOP_SIGTERM:
2812 case SERVICE_STOP_SIGKILL:
2814 if (!control_pid_good(s))
2815 service_enter_stop_post(s, success);
2817 /* If there is still a control process, wait for that first */
2821 assert_not_reached("Uh, main process died at wrong time.");
2825 } else if (s->control_pid == pid) {
2829 if (s->control_command) {
2830 exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
2832 if (s->control_command->ignore)
2836 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2837 "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
2838 s->failure = s->failure || !success;
2840 if (s->control_command &&
2841 s->control_command->command_next &&
2844 /* There is another command to *
2845 * execute, so let's do that. */
2847 log_debug("%s running next control command for state %s", u->meta.id, service_state_to_string(s->state));
2848 service_run_next_control(s, success);
2851 /* No further commands for this step, so let's
2852 * figure out what to do next */
2854 s->control_command = NULL;
2855 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2857 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2861 case SERVICE_START_PRE:
2863 service_enter_start(s);
2865 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2869 assert(s->type == SERVICE_FORKING);
2872 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2877 /* Let's try to load the pid file here if we can.
2878 * The PID file might actually be created by a START_POST
2879 * script. In that case don't worry if the loading fails. */
2880 bool has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
2881 int r = service_load_pid_file(s, !has_start_post);
2882 if (!has_start_post && r < 0) {
2883 r = service_demand_pid_file(s);
2884 if (r < 0 || !cgroup_good(s))
2885 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2889 service_search_main_pid(s);
2891 service_enter_start_post(s);
2894 case SERVICE_START_POST:
2896 service_enter_stop(s, false);
2901 int r = service_load_pid_file(s, true);
2903 r = service_demand_pid_file(s);
2904 if (r < 0 || !cgroup_good(s))
2905 service_enter_stop(s, false);
2909 service_search_main_pid(s);
2911 service_enter_running(s, true);
2914 case SERVICE_RELOAD:
2916 service_load_pid_file(s, true);
2917 service_search_main_pid(s);
2920 s->reload_failure = !success;
2921 service_enter_running(s, true);
2925 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2928 case SERVICE_STOP_SIGTERM:
2929 case SERVICE_STOP_SIGKILL:
2930 if (main_pid_good(s) <= 0)
2931 service_enter_stop_post(s, success);
2933 /* If there is still a service
2934 * process around, wait until
2935 * that one quit, too */
2938 case SERVICE_STOP_POST:
2939 case SERVICE_FINAL_SIGTERM:
2940 case SERVICE_FINAL_SIGKILL:
2941 service_enter_dead(s, success, true);
2945 assert_not_reached("Uh, control process died at wrong time.");
2950 /* Notify clients about changed exit status */
2951 unit_add_to_dbus_queue(u);
2954 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2955 Service *s = SERVICE(u);
2958 assert(elapsed == 1);
2960 assert(w == &s->timer_watch);
2964 case SERVICE_START_PRE:
2966 log_warning("%s operation timed out. Terminating.", u->meta.id);
2967 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2970 case SERVICE_START_POST:
2971 log_warning("%s operation timed out. Stopping.", u->meta.id);
2972 service_enter_stop(s, false);
2975 case SERVICE_RELOAD:
2976 log_warning("%s operation timed out. Stopping.", u->meta.id);
2977 s->reload_failure = true;
2978 service_enter_running(s, true);
2982 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2983 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2986 case SERVICE_STOP_SIGTERM:
2987 if (s->exec_context.send_sigkill) {
2988 log_warning("%s stopping timed out. Killing.", u->meta.id);
2989 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2991 log_warning("%s stopping timed out. Skipping SIGKILL.", u->meta.id);
2992 service_enter_stop_post(s, false);
2997 case SERVICE_STOP_SIGKILL:
2998 /* Uh, we sent a SIGKILL and it is still not gone?
2999 * Must be something we cannot kill, so let's just be
3000 * weirded out and continue */
3002 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
3003 service_enter_stop_post(s, false);
3006 case SERVICE_STOP_POST:
3007 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
3008 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
3011 case SERVICE_FINAL_SIGTERM:
3012 if (s->exec_context.send_sigkill) {
3013 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
3014 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
3016 log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->meta.id);
3017 service_enter_dead(s, false, true);
3022 case SERVICE_FINAL_SIGKILL:
3023 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->meta.id);
3024 service_enter_dead(s, false, true);
3027 case SERVICE_AUTO_RESTART:
3028 log_info("%s holdoff time over, scheduling restart.", u->meta.id);
3029 service_enter_restart(s);
3033 assert_not_reached("Timeout at wrong time.");
3037 static void service_cgroup_notify_event(Unit *u) {
3038 Service *s = SERVICE(u);
3042 log_debug("%s: cgroup is empty", u->meta.id);
3046 /* Waiting for SIGCHLD is usually more interesting,
3047 * because it includes return codes/signals. Which is
3048 * why we ignore the cgroup events for most cases,
3049 * except when we don't know pid which to expect the
3053 case SERVICE_START_POST:
3054 /* If we were hoping for the daemon to write its PID file,
3055 * we can give up now. */
3056 if (s->pid_file_pathspec) {
3057 log_warning("%s never wrote its PID file. Failing.", s->meta.id);
3058 service_unwatch_pid_file(s);
3059 if (s->state == SERVICE_START)
3060 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
3062 service_enter_stop(s, false);
3066 case SERVICE_RUNNING:
3067 service_enter_running(s, true);
3070 case SERVICE_STOP_SIGTERM:
3071 case SERVICE_STOP_SIGKILL:
3073 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3074 service_enter_stop_post(s, true);
3078 case SERVICE_FINAL_SIGTERM:
3079 case SERVICE_FINAL_SIGKILL:
3080 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3081 service_enter_dead(s, true, true);
3090 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3091 Service *s = SERVICE(u);
3096 if (s->notify_access == NOTIFY_NONE) {
3097 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
3098 u->meta.id, (unsigned long) pid);
3102 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3103 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
3104 u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
3108 log_debug("%s: Got message", u->meta.id);
3110 /* Interpret MAINPID= */
3111 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3112 (s->state == SERVICE_START ||
3113 s->state == SERVICE_START_POST ||
3114 s->state == SERVICE_RUNNING ||
3115 s->state == SERVICE_RELOAD)) {
3117 if (parse_pid(e + 8, &pid) < 0)
3118 log_warning("Failed to parse notification message %s", e);
3120 log_debug("%s: got %s", u->meta.id, e);
3121 service_set_main_pid(s, pid);
3125 /* Interpret READY= */
3126 if (s->type == SERVICE_NOTIFY &&
3127 s->state == SERVICE_START &&
3128 strv_find(tags, "READY=1")) {
3129 log_debug("%s: got READY=1", u->meta.id);
3131 service_enter_start_post(s);
3134 /* Interpret STATUS= */
3135 if ((e = strv_find_prefix(tags, "STATUS="))) {
3139 if (!(t = strdup(e+7))) {
3140 log_error("Failed to allocate string.");
3144 log_debug("%s: got %s", u->meta.id, e);
3146 free(s->status_text);
3149 free(s->status_text);
3150 s->status_text = NULL;
3155 /* Notify clients about changed status or main pid */
3156 unit_add_to_dbus_queue(u);
3159 #ifdef HAVE_SYSV_COMPAT
3162 static void sysv_facility_in_insserv_conf(Manager *mgr) {
3166 if (!(f = fopen("/etc/insserv.conf", "re"))) {
3167 r = errno == ENOENT ? 0 : -errno;
3172 char l[LINE_MAX], *t;
3173 char **parsed = NULL;
3175 if (!fgets(l, sizeof(l), f)) {
3180 log_error("Failed to read configuration file '/etc/insserv.conf': %s", strerror(-r));
3185 if (*t != '$' && *t != '<')
3188 parsed = strv_split(t,WHITESPACE);
3189 /* we ignore <interactive>, not used, equivalent to X-Interactive */
3190 if (parsed && !startswith_no_case (parsed[0], "<interactive>")) {
3193 if (sysv_translate_facility(parsed[0], NULL, &facility) < 0)
3195 if ((u = manager_get_unit(mgr, facility)) && (u->meta.type == UNIT_TARGET)) {
3197 char *dep = NULL, *name, **j;
3199 STRV_FOREACH (j, parsed+1) {
3208 if (sysv_translate_facility(name, NULL, &dep) < 0)
3211 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, e, dep, NULL, true);
3226 static int service_enumerate(Manager *m) {
3230 char *path = NULL, *fpath = NULL, *name = NULL;
3231 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
3238 if (m->running_as != MANAGER_SYSTEM)
3241 zero(runlevel_services);
3243 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3244 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3248 path = join(*p, "/", rcnd_table[i].path, NULL);
3257 if (!(d = opendir(path))) {
3258 if (errno != ENOENT)
3259 log_warning("opendir() failed on %s: %s", path, strerror(errno));
3264 while ((de = readdir(d))) {
3267 if (ignore_file(de->d_name))
3270 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3273 if (strlen(de->d_name) < 4)
3276 a = undecchar(de->d_name[1]);
3277 b = undecchar(de->d_name[2]);
3283 fpath = join(path, "/", de->d_name, NULL);
3289 if (access(fpath, X_OK) < 0) {
3291 if (errno != ENOENT)
3292 log_warning("access() failed on %s: %s", fpath, strerror(errno));
3298 if (!(name = sysv_translate_name(de->d_name + 3))) {
3303 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
3304 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3308 if (de->d_name[0] == 'S') {
3310 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
3311 SERVICE(service)->sysv_start_priority_from_rcnd =
3312 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3314 SERVICE(service)->sysv_enabled = true;
3317 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
3320 if ((r = set_put(runlevel_services[i], service)) < 0)
3323 } else if (de->d_name[0] == 'K' &&
3324 (rcnd_table[i].type == RUNLEVEL_DOWN ||
3325 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
3327 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
3330 if ((r = set_put(shutdown_services, service)) < 0)
3336 /* Now we loaded all stubs and are aware of the lowest
3337 start-up priority for all services, not let's actually load
3338 the services, this will also tell us which services are
3339 actually native now */
3340 manager_dispatch_load_queue(m);
3342 /* If this is a native service, rely on native ways to pull in
3343 * a service, don't pull it in via sysv rcN.d links. */
3344 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3345 SET_FOREACH(service, runlevel_services[i], j) {
3346 service = unit_follow_merge(service);
3348 if (service->meta.fragment_path)
3351 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3355 /* We honour K links only for halt/reboot. For the normal
3356 * runlevels we assume the stop jobs will be implicitly added
3357 * by the core logic. Also, we don't really distinguish here
3358 * between the runlevels 0 and 6 and just add them to the
3359 * special shutdown target. On SUSE the boot.d/ runlevel is
3360 * also used for shutdown, so we add links for that too to the
3361 * shutdown target.*/
3362 SET_FOREACH(service, shutdown_services, j) {
3363 service = unit_follow_merge(service);
3365 if (service->meta.fragment_path)
3368 if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
3375 sysv_facility_in_insserv_conf (m);
3383 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3384 set_free(runlevel_services[i]);
3385 set_free(shutdown_services);
3394 static void service_bus_name_owner_change(
3397 const char *old_owner,
3398 const char *new_owner) {
3400 Service *s = SERVICE(u);
3405 assert(streq(s->bus_name, name));
3406 assert(old_owner || new_owner);
3408 if (old_owner && new_owner)
3409 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
3411 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
3413 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
3415 s->bus_name_good = !!new_owner;
3417 if (s->type == SERVICE_DBUS) {
3419 /* service_enter_running() will figure out what to
3421 if (s->state == SERVICE_RUNNING)
3422 service_enter_running(s, true);
3423 else if (s->state == SERVICE_START && new_owner)
3424 service_enter_start_post(s);
3426 } else if (new_owner &&
3428 (s->state == SERVICE_START ||
3429 s->state == SERVICE_START_POST ||
3430 s->state == SERVICE_RUNNING ||
3431 s->state == SERVICE_RELOAD)) {
3433 /* Try to acquire PID from bus service */
3434 log_debug("Trying to acquire PID from D-Bus name...");
3436 bus_query_pid(u->meta.manager, name);
3440 static void service_bus_query_pid_done(
3445 Service *s = SERVICE(u);
3450 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
3452 if (s->main_pid <= 0 &&
3453 (s->state == SERVICE_START ||
3454 s->state == SERVICE_START_POST ||
3455 s->state == SERVICE_RUNNING ||
3456 s->state == SERVICE_RELOAD))
3457 service_set_main_pid(s, pid);
3460 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3464 /* This is called by the socket code when instantiating a new
3465 * service for a stream socket and the socket needs to be
3468 if (s->meta.load_state != UNIT_LOADED)
3471 if (s->socket_fd >= 0)
3474 if (s->state != SERVICE_DEAD)
3478 s->got_socket_fd = true;
3479 s->accept_socket = sock;
3484 static void service_reset_failed(Unit *u) {
3485 Service *s = SERVICE(u);
3489 if (s->state == SERVICE_FAILED)
3490 service_set_state(s, SERVICE_DEAD);
3495 static bool service_need_daemon_reload(Unit *u) {
3496 Service *s = SERVICE(u);
3500 #ifdef HAVE_SYSV_COMPAT
3505 if (stat(s->sysv_path, &st) < 0)
3506 /* What, cannot access this anymore? */
3509 if (s->sysv_mtime > 0 &&
3510 timespec_load(&st.st_mtim) != s->sysv_mtime)
3518 static int service_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
3519 Service *s = SERVICE(u);
3521 Set *pid_set = NULL;
3525 if (s->main_pid <= 0 && who == KILL_MAIN) {
3526 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
3530 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3531 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
3535 if (who == KILL_CONTROL || who == KILL_ALL)
3536 if (s->control_pid > 0)
3537 if (kill(s->control_pid, signo) < 0)
3540 if (who == KILL_MAIN || who == KILL_ALL)
3541 if (s->main_pid > 0)
3542 if (kill(s->main_pid, signo) < 0)
3545 if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
3548 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
3551 /* Exclude the control/main pid from being killed via the cgroup */
3552 if (s->control_pid > 0)
3553 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
3558 if (s->main_pid > 0)
3559 if ((q = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) {
3564 if ((q = cgroup_bonding_kill_list(s->meta.cgroup_bondings, signo, false, pid_set)) < 0)
3565 if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
3576 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3577 [SERVICE_DEAD] = "dead",
3578 [SERVICE_START_PRE] = "start-pre",
3579 [SERVICE_START] = "start",
3580 [SERVICE_START_POST] = "start-post",
3581 [SERVICE_RUNNING] = "running",
3582 [SERVICE_EXITED] = "exited",
3583 [SERVICE_RELOAD] = "reload",
3584 [SERVICE_STOP] = "stop",
3585 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3586 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3587 [SERVICE_STOP_POST] = "stop-post",
3588 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3589 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3590 [SERVICE_FAILED] = "failed",
3591 [SERVICE_AUTO_RESTART] = "auto-restart",
3594 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3596 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3597 [SERVICE_RESTART_NO] = "no",
3598 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3599 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3600 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3601 [SERVICE_RESTART_ALWAYS] = "always"
3604 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3606 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3607 [SERVICE_SIMPLE] = "simple",
3608 [SERVICE_FORKING] = "forking",
3609 [SERVICE_ONESHOT] = "oneshot",
3610 [SERVICE_DBUS] = "dbus",
3611 [SERVICE_NOTIFY] = "notify"
3614 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3616 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3617 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3618 [SERVICE_EXEC_START] = "ExecStart",
3619 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3620 [SERVICE_EXEC_RELOAD] = "ExecReload",
3621 [SERVICE_EXEC_STOP] = "ExecStop",
3622 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3625 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3627 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3628 [NOTIFY_NONE] = "none",
3629 [NOTIFY_MAIN] = "main",
3630 [NOTIFY_ALL] = "all"
3633 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3635 const UnitVTable service_vtable = {
3636 .suffix = ".service",
3641 .show_status = true,
3643 .init = service_init,
3644 .done = service_done,
3645 .load = service_load,
3647 .coldplug = service_coldplug,
3649 .dump = service_dump,
3651 .start = service_start,
3652 .stop = service_stop,
3653 .reload = service_reload,
3655 .can_reload = service_can_reload,
3657 .kill = service_kill,
3659 .serialize = service_serialize,
3660 .deserialize_item = service_deserialize_item,
3662 .active_state = service_active_state,
3663 .sub_state_to_string = service_sub_state_to_string,
3665 .check_gc = service_check_gc,
3666 .check_snapshot = service_check_snapshot,
3668 .sigchld_event = service_sigchld_event,
3669 .timer_event = service_timer_event,
3670 .fd_event = service_fd_event,
3672 .reset_failed = service_reset_failed,
3674 .need_daemon_reload = service_need_daemon_reload,
3676 .cgroup_notify_empty = service_cgroup_notify_event,
3677 .notify_message = service_notify_message,
3679 .bus_name_owner_change = service_bus_name_owner_change,
3680 .bus_query_pid_done = service_bus_query_pid_done,
3682 .bus_interface = "org.freedesktop.systemd1.Service",
3683 .bus_message_handler = bus_service_message_handler,
3684 .bus_invalidating_properties = bus_service_invalidating_properties,
3686 #ifdef HAVE_SYSV_COMPAT
3687 .enumerate = service_enumerate