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 (!UNIT_DEREF(s->accept_socket))
193 socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
194 unit_ref_unset(&s->accept_socket);
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 unit_ref_unset(&s->accept_socket);
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 void service_fix_output(Service *s) {
1114 /* If nothing has been explicitly configured, patch default
1115 * output in. If input is socket/tty we avoid this however,
1116 * since in that case we want output to default to the same
1117 * place as we read input from. */
1119 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1120 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1121 s->exec_context.std_input == EXEC_INPUT_NULL)
1122 s->exec_context.std_error = s->meta.manager->default_std_error;
1124 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1125 s->exec_context.std_input == EXEC_INPUT_NULL)
1126 s->exec_context.std_output = s->meta.manager->default_std_output;
1129 static int service_load(Unit *u) {
1131 Service *s = SERVICE(u);
1135 /* Load a .service file */
1136 if ((r = unit_load_fragment(u)) < 0)
1139 #ifdef HAVE_SYSV_COMPAT
1140 /* Load a classic init script as a fallback, if we couldn't find anything */
1141 if (u->meta.load_state == UNIT_STUB)
1142 if ((r = service_load_sysv(s)) < 0)
1146 /* Still nothing found? Then let's give up */
1147 if (u->meta.load_state == UNIT_STUB)
1150 /* We were able to load something, then let's add in the
1151 * dropin directories. */
1152 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
1155 /* This is a new unit? Then let's add in some extras */
1156 if (u->meta.load_state == UNIT_LOADED) {
1157 service_fix_output(s);
1159 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
1162 if ((r = unit_add_default_cgroups(u)) < 0)
1165 #ifdef HAVE_SYSV_COMPAT
1166 if ((r = sysv_fix_order(s)) < 0)
1170 if ((r = fsck_fix_order(s)) < 0)
1174 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
1177 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1178 s->notify_access = NOTIFY_MAIN;
1180 if (s->type == SERVICE_DBUS || s->bus_name)
1181 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true)) < 0)
1184 if (s->meta.default_dependencies)
1185 if ((r = service_add_default_dependencies(s)) < 0)
1189 return service_verify(s);
1192 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1194 ServiceExecCommand c;
1195 Service *s = SERVICE(u);
1196 const char *prefix2;
1201 p2 = strappend(prefix, "\t");
1202 prefix2 = p2 ? p2 : prefix;
1205 "%sService State: %s\n"
1206 "%sPermissionsStartOnly: %s\n"
1207 "%sRootDirectoryStartOnly: %s\n"
1208 "%sRemainAfterExit: %s\n"
1209 "%sGuessMainPID: %s\n"
1212 "%sNotifyAccess: %s\n",
1213 prefix, service_state_to_string(s->state),
1214 prefix, yes_no(s->permissions_start_only),
1215 prefix, yes_no(s->root_directory_start_only),
1216 prefix, yes_no(s->remain_after_exit),
1217 prefix, yes_no(s->guess_main_pid),
1218 prefix, service_type_to_string(s->type),
1219 prefix, service_restart_to_string(s->restart),
1220 prefix, notify_access_to_string(s->notify_access));
1222 if (s->control_pid > 0)
1224 "%sControl PID: %lu\n",
1225 prefix, (unsigned long) s->control_pid);
1227 if (s->main_pid > 0)
1230 "%sMain PID Known: %s\n"
1231 "%sMain PID Alien: %s\n",
1232 prefix, (unsigned long) s->main_pid,
1233 prefix, yes_no(s->main_pid_known),
1234 prefix, yes_no(s->main_pid_alien));
1239 prefix, s->pid_file);
1244 "%sBus Name Good: %s\n",
1245 prefix, s->bus_name,
1246 prefix, yes_no(s->bus_name_good));
1248 exec_context_dump(&s->exec_context, f, prefix);
1250 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1252 if (!s->exec_command[c])
1255 fprintf(f, "%s-> %s:\n",
1256 prefix, service_exec_command_to_string(c));
1258 exec_command_dump_list(s->exec_command[c], f, prefix2);
1261 #ifdef HAVE_SYSV_COMPAT
1264 "%sSysV Init Script Path: %s\n"
1265 "%sSysV Init Script has LSB Header: %s\n"
1266 "%sSysVEnabled: %s\n",
1267 prefix, s->sysv_path,
1268 prefix, yes_no(s->sysv_has_lsb),
1269 prefix, yes_no(s->sysv_enabled));
1271 if (s->sysv_start_priority >= 0)
1273 "%sSysVStartPriority: %i\n",
1274 prefix, s->sysv_start_priority);
1276 if (s->sysv_runlevels)
1277 fprintf(f, "%sSysVRunLevels: %s\n",
1278 prefix, s->sysv_runlevels);
1281 if (s->fsck_passno > 0)
1283 "%sFsckPassNo: %i\n",
1284 prefix, s->fsck_passno);
1287 fprintf(f, "%sStatus Text: %s\n",
1288 prefix, s->status_text);
1293 static int service_load_pid_file(Service *s, bool may_warn) {
1303 if ((r = read_one_line_file(s->pid_file, &k)) < 0) {
1305 log_info("PID file %s not readable (yet?) after %s.",
1306 s->pid_file, service_state_to_string(s->state));
1310 r = parse_pid(k, &pid);
1316 if (kill(pid, 0) < 0 && errno != EPERM) {
1318 log_info("PID %lu read from file %s does not exist.",
1319 (unsigned long) pid, s->pid_file);
1323 if (s->main_pid_known) {
1324 if (pid == s->main_pid)
1327 log_debug("Main PID changing: %lu -> %lu",
1328 (unsigned long) s->main_pid, (unsigned long) pid);
1329 service_unwatch_main_pid(s);
1330 s->main_pid_known = false;
1332 log_debug("Main PID loaded: %lu", (unsigned long) pid);
1334 if ((r = service_set_main_pid(s, pid)) < 0)
1337 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1338 /* FIXME: we need to do something here */
1344 static int service_search_main_pid(Service *s) {
1350 /* If we know it anyway, don't ever fallback to unreliable
1352 if (s->main_pid_known)
1355 if (!s->guess_main_pid)
1358 assert(s->main_pid <= 0);
1360 if ((pid = cgroup_bonding_search_main_pid_list(s->meta.cgroup_bondings)) <= 0)
1363 log_debug("Main PID guessed: %lu", (unsigned long) pid);
1364 if ((r = service_set_main_pid(s, pid)) < 0)
1367 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1368 /* FIXME: we need to do something here */
1374 static void service_notify_sockets_dead(Service *s) {
1380 /* Notifies all our sockets when we die */
1382 if (s->socket_fd >= 0)
1385 SET_FOREACH(u, s->meta.dependencies[UNIT_TRIGGERED_BY], i)
1386 if (u->meta.type == UNIT_SOCKET)
1387 socket_notify_service_dead(SOCKET(u));
1392 static void service_unwatch_pid_file(Service *s) {
1393 if (!s->pid_file_pathspec)
1396 log_debug("Stopping watch for %s's PID file %s", s->meta.id, s->pid_file_pathspec->path);
1397 path_spec_unwatch(s->pid_file_pathspec, UNIT(s));
1398 path_spec_done(s->pid_file_pathspec);
1399 free(s->pid_file_pathspec);
1400 s->pid_file_pathspec = NULL;
1403 static void service_set_state(Service *s, ServiceState state) {
1404 ServiceState old_state;
1407 old_state = s->state;
1410 service_unwatch_pid_file(s);
1412 if (state != SERVICE_START_PRE &&
1413 state != SERVICE_START &&
1414 state != SERVICE_START_POST &&
1415 state != SERVICE_RELOAD &&
1416 state != SERVICE_STOP &&
1417 state != SERVICE_STOP_SIGTERM &&
1418 state != SERVICE_STOP_SIGKILL &&
1419 state != SERVICE_STOP_POST &&
1420 state != SERVICE_FINAL_SIGTERM &&
1421 state != SERVICE_FINAL_SIGKILL &&
1422 state != SERVICE_AUTO_RESTART)
1423 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1425 if (state != SERVICE_START &&
1426 state != SERVICE_START_POST &&
1427 state != SERVICE_RUNNING &&
1428 state != SERVICE_RELOAD &&
1429 state != SERVICE_STOP &&
1430 state != SERVICE_STOP_SIGTERM &&
1431 state != SERVICE_STOP_SIGKILL) {
1432 service_unwatch_main_pid(s);
1433 s->main_command = NULL;
1436 if (state != SERVICE_START_PRE &&
1437 state != SERVICE_START &&
1438 state != SERVICE_START_POST &&
1439 state != SERVICE_RELOAD &&
1440 state != SERVICE_STOP &&
1441 state != SERVICE_STOP_SIGTERM &&
1442 state != SERVICE_STOP_SIGKILL &&
1443 state != SERVICE_STOP_POST &&
1444 state != SERVICE_FINAL_SIGTERM &&
1445 state != SERVICE_FINAL_SIGKILL) {
1446 service_unwatch_control_pid(s);
1447 s->control_command = NULL;
1448 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1451 if (state == SERVICE_DEAD ||
1452 state == SERVICE_STOP ||
1453 state == SERVICE_STOP_SIGTERM ||
1454 state == SERVICE_STOP_SIGKILL ||
1455 state == SERVICE_STOP_POST ||
1456 state == SERVICE_FINAL_SIGTERM ||
1457 state == SERVICE_FINAL_SIGKILL ||
1458 state == SERVICE_FAILED ||
1459 state == SERVICE_AUTO_RESTART)
1460 service_notify_sockets_dead(s);
1462 if (state != SERVICE_START_PRE &&
1463 state != SERVICE_START &&
1464 state != SERVICE_START_POST &&
1465 state != SERVICE_RUNNING &&
1466 state != SERVICE_RELOAD &&
1467 state != SERVICE_STOP &&
1468 state != SERVICE_STOP_SIGTERM &&
1469 state != SERVICE_STOP_SIGKILL &&
1470 state != SERVICE_STOP_POST &&
1471 state != SERVICE_FINAL_SIGTERM &&
1472 state != SERVICE_FINAL_SIGKILL &&
1473 !(state == SERVICE_DEAD && s->meta.job)) {
1474 service_close_socket_fd(s);
1475 service_connection_unref(s);
1478 /* For the inactive states unit_notify() will trim the cgroup,
1479 * but for exit we have to do that ourselves... */
1480 if (state == SERVICE_EXITED && s->meta.manager->n_reloading <= 0)
1481 cgroup_bonding_trim_list(s->meta.cgroup_bondings, true);
1483 if (old_state != state)
1484 log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1486 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], !s->reload_failure);
1487 s->reload_failure = false;
1490 static int service_coldplug(Unit *u) {
1491 Service *s = SERVICE(u);
1495 assert(s->state == SERVICE_DEAD);
1497 if (s->deserialized_state != s->state) {
1499 if (s->deserialized_state == SERVICE_START_PRE ||
1500 s->deserialized_state == SERVICE_START ||
1501 s->deserialized_state == SERVICE_START_POST ||
1502 s->deserialized_state == SERVICE_RELOAD ||
1503 s->deserialized_state == SERVICE_STOP ||
1504 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1505 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1506 s->deserialized_state == SERVICE_STOP_POST ||
1507 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1508 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1509 s->deserialized_state == SERVICE_AUTO_RESTART) {
1511 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1514 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1516 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1521 if ((s->deserialized_state == SERVICE_START &&
1522 (s->type == SERVICE_FORKING ||
1523 s->type == SERVICE_DBUS ||
1524 s->type == SERVICE_ONESHOT ||
1525 s->type == SERVICE_NOTIFY)) ||
1526 s->deserialized_state == SERVICE_START_POST ||
1527 s->deserialized_state == SERVICE_RUNNING ||
1528 s->deserialized_state == SERVICE_RELOAD ||
1529 s->deserialized_state == SERVICE_STOP ||
1530 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1531 s->deserialized_state == SERVICE_STOP_SIGKILL)
1532 if (s->main_pid > 0)
1533 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1536 if (s->deserialized_state == SERVICE_START_PRE ||
1537 s->deserialized_state == SERVICE_START ||
1538 s->deserialized_state == SERVICE_START_POST ||
1539 s->deserialized_state == SERVICE_RELOAD ||
1540 s->deserialized_state == SERVICE_STOP ||
1541 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1542 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1543 s->deserialized_state == SERVICE_STOP_POST ||
1544 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1545 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1546 if (s->control_pid > 0)
1547 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1550 service_set_state(s, s->deserialized_state);
1556 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1560 unsigned rn_fds = 0;
1567 if (s->socket_fd >= 0)
1570 SET_FOREACH(u, s->meta.dependencies[UNIT_TRIGGERED_BY], i) {
1575 if (u->meta.type != UNIT_SOCKET)
1580 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1592 if (!(t = new(int, rn_fds+cn_fds))) {
1598 memcpy(t, rfds, rn_fds * sizeof(int));
1599 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1604 rn_fds = rn_fds+cn_fds;
1619 static int service_spawn(
1624 bool apply_permissions,
1626 bool apply_tty_stdin,
1627 bool set_notify_socket,
1632 int *fds = NULL, *fdsbuf = NULL;
1633 unsigned n_fds = 0, n_env = 0;
1634 char **argv = NULL, **final_env = NULL, **our_env = NULL;
1641 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1642 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1643 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1645 if (s->socket_fd >= 0) {
1646 fds = &s->socket_fd;
1649 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1656 if (timeout && s->timeout_usec) {
1657 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1660 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1662 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1667 if (!(our_env = new0(char*, 4))) {
1672 if (set_notify_socket)
1673 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", s->meta.manager->notify_socket) < 0) {
1678 if (s->main_pid > 0)
1679 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1684 if (!(final_env = strv_env_merge(2,
1685 s->meta.manager->environment,
1700 s->meta.manager->confirm_spawn,
1701 s->meta.cgroup_bondings,
1702 s->meta.cgroup_attributes,
1709 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1710 /* FIXME: we need to do something here */
1716 strv_free(final_env);
1726 strv_free(final_env);
1729 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1734 static int main_pid_good(Service *s) {
1737 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1740 /* If we know the pid file, then lets just check if it is
1742 if (s->main_pid_known) {
1744 /* If it's an alien child let's check if it is still
1746 if (s->main_pid_alien)
1747 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1749 /* .. otherwise assume we'll get a SIGCHLD for it,
1750 * which we really should wait for to collect exit
1751 * status and code */
1752 return s->main_pid > 0;
1755 /* We don't know the pid */
1759 static int control_pid_good(Service *s) {
1762 return s->control_pid > 0;
1765 static int cgroup_good(Service *s) {
1770 if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0)
1776 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1783 if (allow_restart &&
1784 !s->forbid_restart &&
1785 (s->restart == SERVICE_RESTART_ALWAYS ||
1786 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure) ||
1787 (s->restart == SERVICE_RESTART_ON_FAILURE && s->failure) ||
1788 (s->restart == SERVICE_RESTART_ON_ABORT && s->failure &&
1789 (s->main_exec_status.code == CLD_KILLED ||
1790 s->main_exec_status.code == CLD_DUMPED)))) {
1792 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1795 service_set_state(s, SERVICE_AUTO_RESTART);
1797 service_set_state(s, s->failure ? SERVICE_FAILED : SERVICE_DEAD);
1799 s->forbid_restart = false;
1804 log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r));
1805 service_enter_dead(s, false, false);
1808 static void service_enter_signal(Service *s, ServiceState state, bool success);
1810 static void service_enter_stop_post(Service *s, bool success) {
1817 service_unwatch_control_pid(s);
1819 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1820 s->control_command_id = SERVICE_EXEC_STOP_POST;
1822 if ((r = service_spawn(s,
1826 !s->permissions_start_only,
1827 !s->root_directory_start_only,
1830 &s->control_pid)) < 0)
1834 service_set_state(s, SERVICE_STOP_POST);
1836 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1841 log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
1842 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1845 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1847 Set *pid_set = NULL;
1848 bool wait_for_exit = false;
1855 if (s->exec_context.kill_mode != KILL_NONE) {
1856 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1858 if (s->main_pid > 0) {
1859 if (kill_and_sigcont(s->main_pid, sig) < 0 && errno != ESRCH)
1860 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1862 wait_for_exit = !s->main_pid_alien;
1865 if (s->control_pid > 0) {
1866 if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
1867 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1869 wait_for_exit = true;
1872 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1874 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1879 /* Exclude the main/control pids from being killed via the cgroup */
1880 if (s->main_pid > 0)
1881 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
1884 if (s->control_pid > 0)
1885 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1888 if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig, true, pid_set)) < 0) {
1889 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1890 log_warning("Failed to kill control group: %s", strerror(-r));
1892 wait_for_exit = true;
1899 if (wait_for_exit) {
1900 if (s->timeout_usec > 0)
1901 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1904 service_set_state(s, state);
1905 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1906 service_enter_stop_post(s, true);
1908 service_enter_dead(s, true, true);
1913 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
1915 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1916 service_enter_stop_post(s, false);
1918 service_enter_dead(s, false, true);
1924 static void service_enter_stop(Service *s, bool success) {
1932 service_unwatch_control_pid(s);
1934 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1935 s->control_command_id = SERVICE_EXEC_STOP;
1937 if ((r = service_spawn(s,
1941 !s->permissions_start_only,
1942 !s->root_directory_start_only,
1945 &s->control_pid)) < 0)
1948 service_set_state(s, SERVICE_STOP);
1950 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1955 log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r));
1956 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1959 static void service_enter_running(Service *s, bool success) {
1960 int main_pid_ok, cgroup_ok;
1966 main_pid_ok = main_pid_good(s);
1967 cgroup_ok = cgroup_good(s);
1969 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
1970 (s->bus_name_good || s->type != SERVICE_DBUS))
1971 service_set_state(s, SERVICE_RUNNING);
1972 else if (s->remain_after_exit)
1973 service_set_state(s, SERVICE_EXITED);
1975 service_enter_stop(s, true);
1978 static void service_enter_start_post(Service *s) {
1982 service_unwatch_control_pid(s);
1984 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
1985 s->control_command_id = SERVICE_EXEC_START_POST;
1987 if ((r = service_spawn(s,
1991 !s->permissions_start_only,
1992 !s->root_directory_start_only,
1995 &s->control_pid)) < 0)
1998 service_set_state(s, SERVICE_START_POST);
2000 service_enter_running(s, true);
2005 log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
2006 service_enter_stop(s, false);
2009 static void service_enter_start(Service *s) {
2016 assert(s->exec_command[SERVICE_EXEC_START]);
2017 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2019 if (s->type == SERVICE_FORKING)
2020 service_unwatch_control_pid(s);
2022 service_unwatch_main_pid(s);
2024 /* We want to ensure that nobody leaks processes from
2025 * START_PRE here, so let's go on a killing spree, People
2026 * should not spawn long running processes from START_PRE. */
2027 cgroup_bonding_kill_list(s->meta.cgroup_bondings, SIGKILL, true, NULL);
2029 if (s->type == SERVICE_FORKING) {
2030 s->control_command_id = SERVICE_EXEC_START;
2031 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2033 s->main_command = NULL;
2035 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2036 s->control_command = NULL;
2038 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2041 if ((r = service_spawn(s,
2043 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
2048 s->notify_access != NOTIFY_NONE,
2052 if (s->type == SERVICE_SIMPLE) {
2053 /* For simple services we immediately start
2054 * the START_POST binaries. */
2056 service_set_main_pid(s, pid);
2057 service_enter_start_post(s);
2059 } else if (s->type == SERVICE_FORKING) {
2061 /* For forking services we wait until the start
2062 * process exited. */
2064 s->control_pid = pid;
2065 service_set_state(s, SERVICE_START);
2067 } else if (s->type == SERVICE_ONESHOT ||
2068 s->type == SERVICE_DBUS ||
2069 s->type == SERVICE_NOTIFY) {
2071 /* For oneshot services we wait until the start
2072 * process exited, too, but it is our main process. */
2074 /* For D-Bus services we know the main pid right away,
2075 * but wait for the bus name to appear on the
2076 * bus. Notify services are similar. */
2078 service_set_main_pid(s, pid);
2079 service_set_state(s, SERVICE_START);
2081 assert_not_reached("Unknown service type");
2086 log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r));
2087 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2090 static void service_enter_start_pre(Service *s) {
2095 service_unwatch_control_pid(s);
2097 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
2099 /* Before we start anything, let's clear up what might
2100 * be left from previous runs. */
2101 cgroup_bonding_kill_list(s->meta.cgroup_bondings, SIGKILL, true, NULL);
2103 s->control_command_id = SERVICE_EXEC_START_PRE;
2105 if ((r = service_spawn(s,
2109 !s->permissions_start_only,
2110 !s->root_directory_start_only,
2113 &s->control_pid)) < 0)
2116 service_set_state(s, SERVICE_START_PRE);
2118 service_enter_start(s);
2123 log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
2124 service_enter_dead(s, false, true);
2127 static void service_enter_restart(Service *s) {
2132 dbus_error_init(&error);
2135 log_info("Job pending for unit, delaying automatic restart.");
2137 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
2141 service_enter_dead(s, true, false);
2143 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, &error, NULL)) < 0)
2146 log_debug("%s scheduled restart job.", s->meta.id);
2150 log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r));
2151 service_enter_dead(s, false, false);
2153 dbus_error_free(&error);
2156 static void service_enter_reload(Service *s) {
2161 service_unwatch_control_pid(s);
2163 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
2164 s->control_command_id = SERVICE_EXEC_RELOAD;
2166 if ((r = service_spawn(s,
2170 !s->permissions_start_only,
2171 !s->root_directory_start_only,
2174 &s->control_pid)) < 0)
2177 service_set_state(s, SERVICE_RELOAD);
2179 service_enter_running(s, true);
2184 log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r));
2185 s->reload_failure = true;
2186 service_enter_running(s, true);
2189 static void service_run_next_control(Service *s, bool success) {
2193 assert(s->control_command);
2194 assert(s->control_command->command_next);
2199 assert(s->control_command_id != SERVICE_EXEC_START);
2201 s->control_command = s->control_command->command_next;
2202 service_unwatch_control_pid(s);
2204 if ((r = service_spawn(s,
2208 !s->permissions_start_only,
2209 !s->root_directory_start_only,
2210 s->control_command_id == SERVICE_EXEC_START_PRE ||
2211 s->control_command_id == SERVICE_EXEC_STOP_POST,
2213 &s->control_pid)) < 0)
2219 log_warning("%s failed to run next control task: %s", s->meta.id, strerror(-r));
2221 if (s->state == SERVICE_START_PRE)
2222 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2223 else if (s->state == SERVICE_STOP)
2224 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2225 else if (s->state == SERVICE_STOP_POST)
2226 service_enter_dead(s, false, true);
2227 else if (s->state == SERVICE_RELOAD) {
2228 s->reload_failure = true;
2229 service_enter_running(s, true);
2231 service_enter_stop(s, false);
2234 static void service_run_next_main(Service *s, bool success) {
2239 assert(s->main_command);
2240 assert(s->main_command->command_next);
2241 assert(s->type == SERVICE_ONESHOT);
2246 s->main_command = s->main_command->command_next;
2247 service_unwatch_main_pid(s);
2249 if ((r = service_spawn(s,
2256 s->notify_access != NOTIFY_NONE,
2260 service_set_main_pid(s, pid);
2265 log_warning("%s failed to run next main task: %s", s->meta.id, strerror(-r));
2266 service_enter_stop(s, false);
2269 static int service_start(Unit *u) {
2270 Service *s = SERVICE(u);
2274 /* We cannot fulfill this request right now, try again later
2276 if (s->state == SERVICE_STOP ||
2277 s->state == SERVICE_STOP_SIGTERM ||
2278 s->state == SERVICE_STOP_SIGKILL ||
2279 s->state == SERVICE_STOP_POST ||
2280 s->state == SERVICE_FINAL_SIGTERM ||
2281 s->state == SERVICE_FINAL_SIGKILL)
2284 /* Already on it! */
2285 if (s->state == SERVICE_START_PRE ||
2286 s->state == SERVICE_START ||
2287 s->state == SERVICE_START_POST)
2290 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED || s->state == SERVICE_AUTO_RESTART);
2292 /* Make sure we don't enter a busy loop of some kind. */
2293 if (!ratelimit_test(&s->ratelimit)) {
2294 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
2299 s->main_pid_known = false;
2300 s->main_pid_alien = false;
2301 s->forbid_restart = false;
2303 service_enter_start_pre(s);
2307 static int service_stop(Unit *u) {
2308 Service *s = SERVICE(u);
2312 /* This is a user request, so don't do restarts on this
2314 s->forbid_restart = true;
2317 if (s->state == SERVICE_STOP ||
2318 s->state == SERVICE_STOP_SIGTERM ||
2319 s->state == SERVICE_STOP_SIGKILL ||
2320 s->state == SERVICE_STOP_POST ||
2321 s->state == SERVICE_FINAL_SIGTERM ||
2322 s->state == SERVICE_FINAL_SIGKILL)
2325 /* Don't allow a restart */
2326 if (s->state == SERVICE_AUTO_RESTART) {
2327 service_set_state(s, SERVICE_DEAD);
2331 /* If there's already something running we go directly into
2333 if (s->state == SERVICE_START_PRE ||
2334 s->state == SERVICE_START ||
2335 s->state == SERVICE_START_POST ||
2336 s->state == SERVICE_RELOAD) {
2337 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2341 assert(s->state == SERVICE_RUNNING ||
2342 s->state == SERVICE_EXITED);
2344 service_enter_stop(s, true);
2348 static int service_reload(Unit *u) {
2349 Service *s = SERVICE(u);
2353 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2355 service_enter_reload(s);
2359 static bool service_can_reload(Unit *u) {
2360 Service *s = SERVICE(u);
2364 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2367 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2368 Service *s = SERVICE(u);
2374 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2375 unit_serialize_item(u, f, "failure", yes_no(s->failure));
2377 if (s->control_pid > 0)
2378 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2380 if (s->main_pid_known && s->main_pid > 0)
2381 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2383 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2386 unit_serialize_item(u, f, "status-text", s->status_text);
2388 /* There's a minor uncleanliness here: if there are multiple
2389 * commands attached here, we will start from the first one
2391 if (s->control_command_id >= 0)
2392 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2394 if (s->socket_fd >= 0) {
2397 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2400 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2403 if (s->main_exec_status.pid > 0) {
2404 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2405 dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp);
2406 dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp);
2408 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2409 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2410 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2417 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2418 Service *s = SERVICE(u);
2425 if (streq(key, "state")) {
2428 if ((state = service_state_from_string(value)) < 0)
2429 log_debug("Failed to parse state value %s", value);
2431 s->deserialized_state = state;
2432 } else if (streq(key, "failure")) {
2435 if ((b = parse_boolean(value)) < 0)
2436 log_debug("Failed to parse failure value %s", value);
2438 s->failure = b || s->failure;
2439 } else if (streq(key, "control-pid")) {
2442 if (parse_pid(value, &pid) < 0)
2443 log_debug("Failed to parse control-pid value %s", value);
2445 s->control_pid = pid;
2446 } else if (streq(key, "main-pid")) {
2449 if (parse_pid(value, &pid) < 0)
2450 log_debug("Failed to parse main-pid value %s", value);
2452 service_set_main_pid(s, (pid_t) pid);
2453 } else if (streq(key, "main-pid-known")) {
2456 if ((b = parse_boolean(value)) < 0)
2457 log_debug("Failed to parse main-pid-known value %s", value);
2459 s->main_pid_known = b;
2460 } else if (streq(key, "status-text")) {
2463 if ((t = strdup(value))) {
2464 free(s->status_text);
2468 } else if (streq(key, "control-command")) {
2469 ServiceExecCommand id;
2471 if ((id = service_exec_command_from_string(value)) < 0)
2472 log_debug("Failed to parse exec-command value %s", value);
2474 s->control_command_id = id;
2475 s->control_command = s->exec_command[id];
2477 } else if (streq(key, "socket-fd")) {
2480 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2481 log_debug("Failed to parse socket-fd value %s", value);
2484 if (s->socket_fd >= 0)
2485 close_nointr_nofail(s->socket_fd);
2486 s->socket_fd = fdset_remove(fds, fd);
2488 } else if (streq(key, "main-exec-status-pid")) {
2491 if (parse_pid(value, &pid) < 0)
2492 log_debug("Failed to parse main-exec-status-pid value %s", value);
2494 s->main_exec_status.pid = pid;
2495 } else if (streq(key, "main-exec-status-code")) {
2498 if (safe_atoi(value, &i) < 0)
2499 log_debug("Failed to parse main-exec-status-code value %s", value);
2501 s->main_exec_status.code = i;
2502 } else if (streq(key, "main-exec-status-status")) {
2505 if (safe_atoi(value, &i) < 0)
2506 log_debug("Failed to parse main-exec-status-status value %s", value);
2508 s->main_exec_status.status = i;
2509 } else if (streq(key, "main-exec-status-start"))
2510 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2511 else if (streq(key, "main-exec-status-exit"))
2512 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2514 log_debug("Unknown serialization key '%s'", key);
2519 static UnitActiveState service_active_state(Unit *u) {
2522 return state_translation_table[SERVICE(u)->state];
2525 static const char *service_sub_state_to_string(Unit *u) {
2528 return service_state_to_string(SERVICE(u)->state);
2531 static bool service_check_gc(Unit *u) {
2532 Service *s = SERVICE(u);
2536 /* Never clean up services that still have a process around,
2537 * even if the service is formally dead. */
2538 if (cgroup_good(s) > 0 ||
2539 main_pid_good(s) > 0 ||
2540 control_pid_good(s) > 0)
2543 #ifdef HAVE_SYSV_COMPAT
2551 static bool service_check_snapshot(Unit *u) {
2552 Service *s = SERVICE(u);
2556 return !s->got_socket_fd;
2559 static int service_retry_pid_file(Service *s) {
2562 assert(s->pid_file);
2563 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2565 r = service_load_pid_file(s, false);
2569 service_unwatch_pid_file(s);
2571 service_enter_running(s, true);
2575 static int service_watch_pid_file(Service *s) {
2578 log_debug("Setting watch for %s's PID file %s", s->meta.id, s->pid_file_pathspec->path);
2579 r = path_spec_watch(s->pid_file_pathspec, UNIT(s));
2583 /* the pidfile might have appeared just before we set the watch */
2584 service_retry_pid_file(s);
2588 log_error("Failed to set a watch for %s's PID file %s: %s",
2589 s->meta.id, s->pid_file_pathspec->path, strerror(-r));
2590 service_unwatch_pid_file(s);
2594 static int service_demand_pid_file(Service *s) {
2597 assert(s->pid_file);
2598 assert(!s->pid_file_pathspec);
2600 ps = new0(PathSpec, 1);
2604 ps->path = strdup(s->pid_file);
2610 path_kill_slashes(ps->path);
2612 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2613 * keep their PID file open all the time. */
2614 ps->type = PATH_MODIFIED;
2615 ps->inotify_fd = -1;
2617 s->pid_file_pathspec = ps;
2619 return service_watch_pid_file(s);
2622 static void service_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
2623 Service *s = SERVICE(u);
2627 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2628 assert(s->pid_file_pathspec);
2629 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2631 log_debug("inotify event for %s", u->meta.id);
2633 if (path_spec_fd_event(s->pid_file_pathspec, events) < 0)
2636 if (service_retry_pid_file(s) == 0)
2639 if (service_watch_pid_file(s) < 0)
2644 service_unwatch_pid_file(s);
2645 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2648 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2649 Service *s = SERVICE(u);
2655 if (!s->meta.fragment_path)
2656 success = is_clean_exit_lsb(code, status);
2658 success = is_clean_exit(code, status);
2660 if (s->main_pid == pid) {
2661 /* Forking services may occasionally move to a new PID.
2662 * As long as they update the PID file before exiting the old
2663 * PID, they're fine. */
2664 if (service_load_pid_file(s, false) == 0)
2668 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2670 /* If this is not a forking service than the main
2671 * process got started and hence we copy the exit
2672 * status so that it is recorded both as main and as
2673 * control process exit status */
2674 if (s->main_command) {
2675 s->main_command->exec_status = s->main_exec_status;
2677 if (s->main_command->ignore)
2681 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2682 "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
2683 s->failure = s->failure || !success;
2685 if (s->main_command &&
2686 s->main_command->command_next &&
2689 /* There is another command to *
2690 * execute, so let's do that. */
2692 log_debug("%s running next main command for state %s", u->meta.id, service_state_to_string(s->state));
2693 service_run_next_main(s, success);
2697 /* The service exited, so the service is officially
2699 s->main_command = NULL;
2703 case SERVICE_START_POST:
2704 case SERVICE_RELOAD:
2706 /* Need to wait until the operation is
2711 if (s->type == SERVICE_ONESHOT) {
2712 /* This was our main goal, so let's go on */
2714 service_enter_start_post(s);
2716 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2719 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2724 case SERVICE_RUNNING:
2725 service_enter_running(s, success);
2728 case SERVICE_STOP_SIGTERM:
2729 case SERVICE_STOP_SIGKILL:
2731 if (!control_pid_good(s))
2732 service_enter_stop_post(s, success);
2734 /* If there is still a control process, wait for that first */
2738 assert_not_reached("Uh, main process died at wrong time.");
2742 } else if (s->control_pid == pid) {
2746 if (s->control_command) {
2747 exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
2749 if (s->control_command->ignore)
2753 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2754 "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
2755 s->failure = s->failure || !success;
2757 if (s->control_command &&
2758 s->control_command->command_next &&
2761 /* There is another command to *
2762 * execute, so let's do that. */
2764 log_debug("%s running next control command for state %s", u->meta.id, service_state_to_string(s->state));
2765 service_run_next_control(s, success);
2768 /* No further commands for this step, so let's
2769 * figure out what to do next */
2771 s->control_command = NULL;
2772 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2774 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2778 case SERVICE_START_PRE:
2780 service_enter_start(s);
2782 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2786 assert(s->type == SERVICE_FORKING);
2789 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2794 /* Let's try to load the pid file here if we can.
2795 * The PID file might actually be created by a START_POST
2796 * script. In that case don't worry if the loading fails. */
2797 bool has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
2798 int r = service_load_pid_file(s, !has_start_post);
2799 if (!has_start_post && r < 0) {
2800 r = service_demand_pid_file(s);
2801 if (r < 0 || !cgroup_good(s))
2802 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2806 service_search_main_pid(s);
2808 service_enter_start_post(s);
2811 case SERVICE_START_POST:
2813 service_enter_stop(s, false);
2818 int r = service_load_pid_file(s, true);
2820 r = service_demand_pid_file(s);
2821 if (r < 0 || !cgroup_good(s))
2822 service_enter_stop(s, false);
2826 service_search_main_pid(s);
2828 service_enter_running(s, true);
2831 case SERVICE_RELOAD:
2833 service_load_pid_file(s, true);
2834 service_search_main_pid(s);
2837 s->reload_failure = !success;
2838 service_enter_running(s, true);
2842 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2845 case SERVICE_STOP_SIGTERM:
2846 case SERVICE_STOP_SIGKILL:
2847 if (main_pid_good(s) <= 0)
2848 service_enter_stop_post(s, success);
2850 /* If there is still a service
2851 * process around, wait until
2852 * that one quit, too */
2855 case SERVICE_STOP_POST:
2856 case SERVICE_FINAL_SIGTERM:
2857 case SERVICE_FINAL_SIGKILL:
2858 service_enter_dead(s, success, true);
2862 assert_not_reached("Uh, control process died at wrong time.");
2867 /* Notify clients about changed exit status */
2868 unit_add_to_dbus_queue(u);
2871 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2872 Service *s = SERVICE(u);
2875 assert(elapsed == 1);
2877 assert(w == &s->timer_watch);
2881 case SERVICE_START_PRE:
2883 log_warning("%s operation timed out. Terminating.", u->meta.id);
2884 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2887 case SERVICE_START_POST:
2888 log_warning("%s operation timed out. Stopping.", u->meta.id);
2889 service_enter_stop(s, false);
2892 case SERVICE_RELOAD:
2893 log_warning("%s operation timed out. Stopping.", u->meta.id);
2894 s->reload_failure = true;
2895 service_enter_running(s, true);
2899 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2900 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2903 case SERVICE_STOP_SIGTERM:
2904 if (s->exec_context.send_sigkill) {
2905 log_warning("%s stopping timed out. Killing.", u->meta.id);
2906 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2908 log_warning("%s stopping timed out. Skipping SIGKILL.", u->meta.id);
2909 service_enter_stop_post(s, false);
2914 case SERVICE_STOP_SIGKILL:
2915 /* Uh, we sent a SIGKILL and it is still not gone?
2916 * Must be something we cannot kill, so let's just be
2917 * weirded out and continue */
2919 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2920 service_enter_stop_post(s, false);
2923 case SERVICE_STOP_POST:
2924 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2925 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2928 case SERVICE_FINAL_SIGTERM:
2929 if (s->exec_context.send_sigkill) {
2930 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2931 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2933 log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->meta.id);
2934 service_enter_dead(s, false, true);
2939 case SERVICE_FINAL_SIGKILL:
2940 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->meta.id);
2941 service_enter_dead(s, false, true);
2944 case SERVICE_AUTO_RESTART:
2945 log_info("%s holdoff time over, scheduling restart.", u->meta.id);
2946 service_enter_restart(s);
2950 assert_not_reached("Timeout at wrong time.");
2954 static void service_cgroup_notify_event(Unit *u) {
2955 Service *s = SERVICE(u);
2959 log_debug("%s: cgroup is empty", u->meta.id);
2963 /* Waiting for SIGCHLD is usually more interesting,
2964 * because it includes return codes/signals. Which is
2965 * why we ignore the cgroup events for most cases,
2966 * except when we don't know pid which to expect the
2970 case SERVICE_START_POST:
2971 /* If we were hoping for the daemon to write its PID file,
2972 * we can give up now. */
2973 if (s->pid_file_pathspec) {
2974 log_warning("%s never wrote its PID file. Failing.", s->meta.id);
2975 service_unwatch_pid_file(s);
2976 if (s->state == SERVICE_START)
2977 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2979 service_enter_stop(s, false);
2983 case SERVICE_RUNNING:
2984 service_enter_running(s, true);
2987 case SERVICE_STOP_SIGTERM:
2988 case SERVICE_STOP_SIGKILL:
2990 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2991 service_enter_stop_post(s, true);
2995 case SERVICE_FINAL_SIGTERM:
2996 case SERVICE_FINAL_SIGKILL:
2997 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2998 service_enter_dead(s, true, true);
3007 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3008 Service *s = SERVICE(u);
3013 if (s->notify_access == NOTIFY_NONE) {
3014 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
3015 u->meta.id, (unsigned long) pid);
3019 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3020 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
3021 u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
3025 log_debug("%s: Got message", u->meta.id);
3027 /* Interpret MAINPID= */
3028 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3029 (s->state == SERVICE_START ||
3030 s->state == SERVICE_START_POST ||
3031 s->state == SERVICE_RUNNING ||
3032 s->state == SERVICE_RELOAD)) {
3034 if (parse_pid(e + 8, &pid) < 0)
3035 log_warning("Failed to parse notification message %s", e);
3037 log_debug("%s: got %s", u->meta.id, e);
3038 service_set_main_pid(s, pid);
3042 /* Interpret READY= */
3043 if (s->type == SERVICE_NOTIFY &&
3044 s->state == SERVICE_START &&
3045 strv_find(tags, "READY=1")) {
3046 log_debug("%s: got READY=1", u->meta.id);
3048 service_enter_start_post(s);
3051 /* Interpret STATUS= */
3052 if ((e = strv_find_prefix(tags, "STATUS="))) {
3056 if (!(t = strdup(e+7))) {
3057 log_error("Failed to allocate string.");
3061 log_debug("%s: got %s", u->meta.id, e);
3063 free(s->status_text);
3066 free(s->status_text);
3067 s->status_text = NULL;
3072 /* Notify clients about changed status or main pid */
3073 unit_add_to_dbus_queue(u);
3076 #ifdef HAVE_SYSV_COMPAT
3079 static void sysv_facility_in_insserv_conf(Manager *mgr) {
3083 if (!(f = fopen("/etc/insserv.conf", "re"))) {
3084 r = errno == ENOENT ? 0 : -errno;
3089 char l[LINE_MAX], *t;
3090 char **parsed = NULL;
3092 if (!fgets(l, sizeof(l), f)) {
3097 log_error("Failed to read configuration file '/etc/insserv.conf': %s", strerror(-r));
3102 if (*t != '$' && *t != '<')
3105 parsed = strv_split(t,WHITESPACE);
3106 /* we ignore <interactive>, not used, equivalent to X-Interactive */
3107 if (parsed && !startswith_no_case (parsed[0], "<interactive>")) {
3110 if (sysv_translate_facility(parsed[0], NULL, &facility) < 0)
3112 if ((u = manager_get_unit(mgr, facility)) && (u->meta.type == UNIT_TARGET)) {
3114 char *dep = NULL, *name, **j;
3116 STRV_FOREACH (j, parsed+1) {
3125 if (sysv_translate_facility(name, NULL, &dep) < 0)
3128 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, e, dep, NULL, true);
3143 static int service_enumerate(Manager *m) {
3147 char *path = NULL, *fpath = NULL, *name = NULL;
3148 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
3155 if (m->running_as != MANAGER_SYSTEM)
3158 zero(runlevel_services);
3160 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3161 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3165 path = join(*p, "/", rcnd_table[i].path, NULL);
3174 if (!(d = opendir(path))) {
3175 if (errno != ENOENT)
3176 log_warning("opendir() failed on %s: %s", path, strerror(errno));
3181 while ((de = readdir(d))) {
3184 if (ignore_file(de->d_name))
3187 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3190 if (strlen(de->d_name) < 4)
3193 a = undecchar(de->d_name[1]);
3194 b = undecchar(de->d_name[2]);
3200 fpath = join(path, "/", de->d_name, NULL);
3206 if (access(fpath, X_OK) < 0) {
3208 if (errno != ENOENT)
3209 log_warning("access() failed on %s: %s", fpath, strerror(errno));
3215 if (!(name = sysv_translate_name(de->d_name + 3))) {
3220 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
3221 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3225 if (de->d_name[0] == 'S') {
3227 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
3228 SERVICE(service)->sysv_start_priority_from_rcnd =
3229 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3231 SERVICE(service)->sysv_enabled = true;
3234 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
3237 if ((r = set_put(runlevel_services[i], service)) < 0)
3240 } else if (de->d_name[0] == 'K' &&
3241 (rcnd_table[i].type == RUNLEVEL_DOWN ||
3242 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
3244 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
3247 if ((r = set_put(shutdown_services, service)) < 0)
3253 /* Now we loaded all stubs and are aware of the lowest
3254 start-up priority for all services, not let's actually load
3255 the services, this will also tell us which services are
3256 actually native now */
3257 manager_dispatch_load_queue(m);
3259 /* If this is a native service, rely on native ways to pull in
3260 * a service, don't pull it in via sysv rcN.d links. */
3261 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3262 SET_FOREACH(service, runlevel_services[i], j) {
3263 service = unit_follow_merge(service);
3265 if (service->meta.fragment_path)
3268 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3272 /* We honour K links only for halt/reboot. For the normal
3273 * runlevels we assume the stop jobs will be implicitly added
3274 * by the core logic. Also, we don't really distinguish here
3275 * between the runlevels 0 and 6 and just add them to the
3276 * special shutdown target. On SUSE the boot.d/ runlevel is
3277 * also used for shutdown, so we add links for that too to the
3278 * shutdown target.*/
3279 SET_FOREACH(service, shutdown_services, j) {
3280 service = unit_follow_merge(service);
3282 if (service->meta.fragment_path)
3285 if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
3292 sysv_facility_in_insserv_conf (m);
3300 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3301 set_free(runlevel_services[i]);
3302 set_free(shutdown_services);
3311 static void service_bus_name_owner_change(
3314 const char *old_owner,
3315 const char *new_owner) {
3317 Service *s = SERVICE(u);
3322 assert(streq(s->bus_name, name));
3323 assert(old_owner || new_owner);
3325 if (old_owner && new_owner)
3326 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
3328 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
3330 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
3332 s->bus_name_good = !!new_owner;
3334 if (s->type == SERVICE_DBUS) {
3336 /* service_enter_running() will figure out what to
3338 if (s->state == SERVICE_RUNNING)
3339 service_enter_running(s, true);
3340 else if (s->state == SERVICE_START && new_owner)
3341 service_enter_start_post(s);
3343 } else if (new_owner &&
3345 (s->state == SERVICE_START ||
3346 s->state == SERVICE_START_POST ||
3347 s->state == SERVICE_RUNNING ||
3348 s->state == SERVICE_RELOAD)) {
3350 /* Try to acquire PID from bus service */
3351 log_debug("Trying to acquire PID from D-Bus name...");
3353 bus_query_pid(u->meta.manager, name);
3357 static void service_bus_query_pid_done(
3362 Service *s = SERVICE(u);
3367 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
3369 if (s->main_pid <= 0 &&
3370 (s->state == SERVICE_START ||
3371 s->state == SERVICE_START_POST ||
3372 s->state == SERVICE_RUNNING ||
3373 s->state == SERVICE_RELOAD))
3374 service_set_main_pid(s, pid);
3377 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3382 /* This is called by the socket code when instantiating a new
3383 * service for a stream socket and the socket needs to be
3386 if (s->meta.load_state != UNIT_LOADED)
3389 if (s->socket_fd >= 0)
3392 if (s->state != SERVICE_DEAD)
3396 s->got_socket_fd = true;
3398 unit_ref_set(&s->accept_socket, UNIT(sock));
3400 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3403 static void service_reset_failed(Unit *u) {
3404 Service *s = SERVICE(u);
3408 if (s->state == SERVICE_FAILED)
3409 service_set_state(s, SERVICE_DEAD);
3414 static bool service_need_daemon_reload(Unit *u) {
3415 Service *s = SERVICE(u);
3419 #ifdef HAVE_SYSV_COMPAT
3424 if (stat(s->sysv_path, &st) < 0)
3425 /* What, cannot access this anymore? */
3428 if (s->sysv_mtime > 0 &&
3429 timespec_load(&st.st_mtim) != s->sysv_mtime)
3437 static int service_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
3438 Service *s = SERVICE(u);
3440 Set *pid_set = NULL;
3444 if (s->main_pid <= 0 && who == KILL_MAIN) {
3445 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
3449 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3450 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
3454 if (who == KILL_CONTROL || who == KILL_ALL)
3455 if (s->control_pid > 0)
3456 if (kill(s->control_pid, signo) < 0)
3459 if (who == KILL_MAIN || who == KILL_ALL)
3460 if (s->main_pid > 0)
3461 if (kill(s->main_pid, signo) < 0)
3464 if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
3467 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
3470 /* Exclude the control/main pid from being killed via the cgroup */
3471 if (s->control_pid > 0)
3472 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
3477 if (s->main_pid > 0)
3478 if ((q = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) {
3483 if ((q = cgroup_bonding_kill_list(s->meta.cgroup_bondings, signo, false, pid_set)) < 0)
3484 if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
3495 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3496 [SERVICE_DEAD] = "dead",
3497 [SERVICE_START_PRE] = "start-pre",
3498 [SERVICE_START] = "start",
3499 [SERVICE_START_POST] = "start-post",
3500 [SERVICE_RUNNING] = "running",
3501 [SERVICE_EXITED] = "exited",
3502 [SERVICE_RELOAD] = "reload",
3503 [SERVICE_STOP] = "stop",
3504 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3505 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3506 [SERVICE_STOP_POST] = "stop-post",
3507 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3508 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3509 [SERVICE_FAILED] = "failed",
3510 [SERVICE_AUTO_RESTART] = "auto-restart",
3513 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3515 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3516 [SERVICE_RESTART_NO] = "no",
3517 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3518 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3519 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3520 [SERVICE_RESTART_ALWAYS] = "always"
3523 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3525 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3526 [SERVICE_SIMPLE] = "simple",
3527 [SERVICE_FORKING] = "forking",
3528 [SERVICE_ONESHOT] = "oneshot",
3529 [SERVICE_DBUS] = "dbus",
3530 [SERVICE_NOTIFY] = "notify"
3533 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3535 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3536 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3537 [SERVICE_EXEC_START] = "ExecStart",
3538 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3539 [SERVICE_EXEC_RELOAD] = "ExecReload",
3540 [SERVICE_EXEC_STOP] = "ExecStop",
3541 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3544 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3546 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3547 [NOTIFY_NONE] = "none",
3548 [NOTIFY_MAIN] = "main",
3549 [NOTIFY_ALL] = "all"
3552 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3554 const UnitVTable service_vtable = {
3555 .suffix = ".service",
3560 .show_status = true,
3562 .init = service_init,
3563 .done = service_done,
3564 .load = service_load,
3566 .coldplug = service_coldplug,
3568 .dump = service_dump,
3570 .start = service_start,
3571 .stop = service_stop,
3572 .reload = service_reload,
3574 .can_reload = service_can_reload,
3576 .kill = service_kill,
3578 .serialize = service_serialize,
3579 .deserialize_item = service_deserialize_item,
3581 .active_state = service_active_state,
3582 .sub_state_to_string = service_sub_state_to_string,
3584 .check_gc = service_check_gc,
3585 .check_snapshot = service_check_snapshot,
3587 .sigchld_event = service_sigchld_event,
3588 .timer_event = service_timer_event,
3589 .fd_event = service_fd_event,
3591 .reset_failed = service_reset_failed,
3593 .need_daemon_reload = service_need_daemon_reload,
3595 .cgroup_notify_empty = service_cgroup_notify_event,
3596 .notify_message = service_notify_message,
3598 .bus_name_owner_change = service_bus_name_owner_change,
3599 .bus_query_pid_done = service_bus_query_pid_done,
3601 .bus_interface = "org.freedesktop.systemd1.Service",
3602 .bus_message_handler = bus_service_message_handler,
3603 .bus_invalidating_properties = bus_service_invalidating_properties,
3605 #ifdef HAVE_SYSV_COMPAT
3606 .enumerate = service_enumerate