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->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 void service_unwatch_pid_file(Service *s) {
151 if (!s->pid_file_pathspec)
154 log_debug("Stopping watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path);
155 path_spec_unwatch(s->pid_file_pathspec, UNIT(s));
156 path_spec_done(s->pid_file_pathspec);
157 free(s->pid_file_pathspec);
158 s->pid_file_pathspec = NULL;
161 static int service_set_main_pid(Service *s, pid_t pid) {
173 s->main_pid_known = true;
175 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) {
176 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
177 UNIT(s)->id, (unsigned long) pid);
179 s->main_pid_alien = true;
181 s->main_pid_alien = false;
183 exec_status_start(&s->main_exec_status, pid);
188 static void service_close_socket_fd(Service *s) {
191 if (s->socket_fd < 0)
194 close_nointr_nofail(s->socket_fd);
198 static void service_connection_unref(Service *s) {
201 if (!UNIT_DEREF(s->accept_socket))
204 socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
205 unit_ref_unset(&s->accept_socket);
208 static void service_stop_watchdog(Service *s) {
211 s->watchdog_timestamp.realtime = 0;
212 s->watchdog_timestamp.monotonic = 0;
215 static void service_reset_watchdog(Service *s) {
218 dual_timestamp_get(&s->watchdog_timestamp);
221 static void service_done(Unit *u) {
222 Service *s = SERVICE(u);
229 #ifdef HAVE_SYSV_COMPAT
233 free(s->sysv_runlevels);
234 s->sysv_runlevels = NULL;
237 free(s->status_text);
238 s->status_text = NULL;
240 exec_context_done(&s->exec_context);
241 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
242 s->control_command = NULL;
243 s->main_command = NULL;
245 /* This will leak a process, but at least no memory or any of
247 service_unwatch_main_pid(s);
248 service_unwatch_control_pid(s);
249 service_unwatch_pid_file(s);
252 unit_unwatch_bus_name(u, s->bus_name);
257 service_close_socket_fd(s);
258 service_connection_unref(s);
260 unit_ref_unset(&s->accept_socket);
262 unit_unwatch_timer(u, &s->timer_watch);
265 #ifdef HAVE_SYSV_COMPAT
266 static char *sysv_translate_name(const char *name) {
269 if (!(r = new(char, strlen(name) + sizeof(".service"))))
272 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
273 if (endswith(name, ".sh"))
274 /* Drop Debian-style .sh suffix */
275 strcpy(stpcpy(r, name) - 3, ".service");
278 if (startswith(name, "boot."))
279 /* Drop SuSE-style boot. prefix */
280 strcpy(stpcpy(r, name + 5), ".service");
282 #ifdef TARGET_FRUGALWARE
283 if (startswith(name, "rc."))
284 /* Drop Frugalware-style rc. prefix */
285 strcpy(stpcpy(r, name + 3), ".service");
288 /* Normal init scripts */
289 strcpy(stpcpy(r, name), ".service");
294 static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
296 /* We silently ignore the $ prefix here. According to the LSB
297 * spec it simply indicates whether something is a
298 * standardized name or a distribution-specific one. Since we
299 * just follow what already exists and do not introduce new
300 * uses or names we don't care who introduced a new name. */
302 static const char * const table[] = {
303 /* LSB defined facilities */
304 "local_fs", SPECIAL_LOCAL_FS_TARGET,
305 #if defined(TARGET_MANDRIVA) || defined(TARGET_MAGEIA)
307 /* Due to unfortunate name selection in Mandriva,
308 * $network is provided by network-up which is ordered
309 * after network which actually starts interfaces.
310 * To break the loop, just ignore it */
311 "network", SPECIAL_NETWORK_TARGET,
313 "named", SPECIAL_NSS_LOOKUP_TARGET,
314 "portmap", SPECIAL_RPCBIND_TARGET,
315 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
316 "syslog", SPECIAL_SYSLOG_TARGET,
317 "time", SPECIAL_TIME_SYNC_TARGET,
319 /* common extensions */
320 "mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
321 "x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE,
324 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
325 "mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
329 "MTA", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
330 "smtpdaemon", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
331 "httpd", SPECIAL_HTTP_DAEMON_TARGET,
335 "smtp", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
346 n = *name == '$' ? name + 1 : name;
348 for (i = 0; i < ELEMENTSOF(table); i += 2) {
350 if (!streq(table[i], n))
356 if (!(r = strdup(table[i+1])))
362 /* If we don't know this name, fallback heuristics to figure
363 * out whether something is a target or a service alias. */
366 if (!unit_prefix_is_valid(n))
369 /* Facilities starting with $ are most likely targets */
370 r = unit_name_build(n, NULL, ".target");
371 } else if (filename && streq(name, filename))
372 /* Names equaling the file name of the services are redundant */
375 /* Everything else we assume to be normal service names */
376 r = sysv_translate_name(n);
387 static int sysv_fix_order(Service *s) {
393 if (s->sysv_start_priority < 0)
396 /* For each pair of services where at least one lacks a LSB
397 * header, we use the start priority value to order things. */
399 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
402 bool special_s, special_t;
409 if (UNIT(t)->load_state != UNIT_LOADED)
412 if (t->sysv_start_priority < 0)
415 /* If both units have modern headers we don't care
416 * about the priorities */
417 if ((UNIT(s)->fragment_path || s->sysv_has_lsb) &&
418 (UNIT(t)->fragment_path || t->sysv_has_lsb))
421 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
422 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
424 if (special_t && !special_s)
426 else if (special_s && !special_t)
428 else if (t->sysv_start_priority < s->sysv_start_priority)
430 else if (t->sysv_start_priority > s->sysv_start_priority)
435 /* FIXME: Maybe we should compare the name here lexicographically? */
437 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
444 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
447 if (!(c = new0(ExecCommand, 1)))
450 if (!(c->path = strdup(path))) {
455 if (!(c->argv = strv_new(path, arg1, NULL))) {
464 static int sysv_exec_commands(Service *s) {
468 assert(s->sysv_path);
470 if (!(c = exec_command_new(s->sysv_path, "start")))
472 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
474 if (!(c = exec_command_new(s->sysv_path, "stop")))
476 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
478 if (!(c = exec_command_new(s->sysv_path, "reload")))
480 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
485 static int service_load_sysv_path(Service *s, const char *path) {
496 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
504 if (!(f = fopen(path, "re"))) {
505 r = errno == ENOENT ? 0 : -errno;
510 if (fstat(fileno(f), &st) < 0) {
516 if (!(s->sysv_path = strdup(path))) {
521 s->sysv_mtime = timespec_load(&st.st_mtim);
523 if (null_or_empty(&st)) {
524 u->load_state = UNIT_MASKED;
530 char l[LINE_MAX], *t;
532 if (!fgets(l, sizeof(l), f)) {
537 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
547 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
549 s->sysv_has_lsb = true;
553 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
559 t += strspn(t, WHITESPACE);
561 if (state == NORMAL) {
563 /* Try to parse Red Hat style chkconfig headers */
565 if (startswith_no_case(t, "chkconfig:")) {
567 char runlevels[16], *k;
571 if (sscanf(t+10, "%15s %i %*i",
573 &start_priority) != 2) {
575 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
579 /* A start priority gathered from the
580 * symlink farms is preferred over the
581 * data from the LSB header. */
582 if (start_priority < 0 || start_priority > 99)
583 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
585 s->sysv_start_priority = start_priority;
587 char_array_0(runlevels);
588 k = delete_chars(runlevels, WHITESPACE "-");
593 if (!(d = strdup(k))) {
598 free(s->sysv_runlevels);
599 s->sysv_runlevels = d;
602 } else if (startswith_no_case(t, "description:")) {
604 size_t k = strlen(t);
608 if (t[k-1] == '\\') {
613 if ((j = strstrip(t+12)) && *j) {
614 if (!(d = strdup(j))) {
621 free(chkconfig_description);
622 chkconfig_description = d;
624 } else if (startswith_no_case(t, "pidfile:")) {
631 if (!path_is_absolute(fn)) {
632 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
636 if (!(fn = strdup(fn))) {
645 } else if (state == DESCRIPTION) {
647 /* Try to parse Red Hat style description
650 size_t k = strlen(t);
658 if ((j = strstrip(t)) && *j) {
661 if (chkconfig_description)
662 d = join(chkconfig_description, " ", j, NULL);
671 free(chkconfig_description);
672 chkconfig_description = d;
675 } else if (state == LSB || state == LSB_DESCRIPTION) {
677 if (startswith_no_case(t, "Provides:")) {
683 FOREACH_WORD_QUOTED(w, z, t+9, i) {
686 if (!(n = strndup(w, z))) {
691 r = sysv_translate_facility(n, file_name_from_path(path), &m);
700 if (unit_name_to_type(m) == UNIT_SERVICE)
701 r = unit_add_name(u, m);
708 * indication that the
710 * now available. This
713 * targets do NOT pull
716 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true);
719 log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
724 } else if (startswith_no_case(t, "Required-Start:") ||
725 startswith_no_case(t, "Should-Start:") ||
726 startswith_no_case(t, "X-Start-Before:") ||
727 startswith_no_case(t, "X-Start-After:")) {
733 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
736 if (!(n = strndup(w, z))) {
741 r = sysv_translate_facility(n, file_name_from_path(path), &m);
744 log_error("[%s:%u] Failed to translate LSB dependency %s, ignoring: %s", path, line, n, strerror(-r));
754 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
757 log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
761 } else if (startswith_no_case(t, "Default-Start:")) {
766 k = delete_chars(t+14, WHITESPACE "-");
769 if (!(d = strdup(k))) {
774 free(s->sysv_runlevels);
775 s->sysv_runlevels = d;
778 } else if (startswith_no_case(t, "Description:")) {
781 state = LSB_DESCRIPTION;
783 if ((j = strstrip(t+12)) && *j) {
784 if (!(d = strdup(j))) {
791 free(long_description);
792 long_description = d;
794 } else if (startswith_no_case(t, "Short-Description:")) {
799 if ((j = strstrip(t+18)) && *j) {
800 if (!(d = strdup(j))) {
807 free(short_description);
808 short_description = d;
810 } else if (state == LSB_DESCRIPTION) {
812 if (startswith(l, "#\t") || startswith(l, "# ")) {
815 if ((j = strstrip(t)) && *j) {
818 if (long_description)
819 d = join(long_description, " ", t, NULL);
828 free(long_description);
829 long_description = d;
838 if ((r = sysv_exec_commands(s)) < 0)
840 if (s->sysv_runlevels &&
841 chars_intersect(RUNLEVELS_BOOT, s->sysv_runlevels) &&
842 chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
843 /* Service has both boot and "up" runlevels
844 configured. Kill the "up" ones. */
845 delete_chars(s->sysv_runlevels, RUNLEVELS_UP);
848 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
849 /* If there a runlevels configured for this service
850 * but none of the standard ones, then we assume this
851 * is some special kind of service (which might be
852 * needed for early boot) and don't create any links
855 UNIT(s)->default_dependencies = false;
857 /* Don't timeout special services during boot (like fsck) */
860 s->timeout_usec = DEFAULT_SYSV_TIMEOUT_USEC;
862 /* Special setting for all SysV services */
863 s->type = SERVICE_FORKING;
864 s->remain_after_exit = !s->pid_file;
865 s->guess_main_pid = false;
866 s->restart = SERVICE_RESTART_NO;
868 if (UNIT(s)->manager->sysv_console)
869 s->exec_context.std_output = EXEC_OUTPUT_JOURNAL_AND_CONSOLE;
871 s->exec_context.kill_mode = KILL_PROCESS;
873 /* We use the long description only if
874 * no short description is set. */
876 if (short_description)
877 description = short_description;
878 else if (chkconfig_description)
879 description = chkconfig_description;
880 else if (long_description)
881 description = long_description;
888 if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
896 /* The priority that has been set in /etc/rcN.d/ hierarchies
897 * takes precedence over what is stored as default in the LSB
899 if (s->sysv_start_priority_from_rcnd >= 0)
900 s->sysv_start_priority = s->sysv_start_priority_from_rcnd;
902 u->load_state = UNIT_LOADED;
910 free(short_description);
911 free(long_description);
912 free(chkconfig_description);
917 static int service_load_sysv_name(Service *s, const char *name) {
923 /* For SysV services we strip the boot.*, rc.* and *.sh
924 * prefixes/suffixes. */
925 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
926 if (endswith(name, ".sh.service"))
931 if (startswith(name, "boot."))
935 #ifdef TARGET_FRUGALWARE
936 if (startswith(name, "rc."))
940 STRV_FOREACH(p, UNIT(s)->manager->lookup_paths.sysvinit_path) {
944 path = join(*p, "/", name, NULL);
948 assert(endswith(path, ".service"));
949 path[strlen(path)-8] = 0;
951 r = service_load_sysv_path(s, path);
953 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
954 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
955 /* Try Debian style *.sh source'able init scripts */
957 r = service_load_sysv_path(s, path);
963 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
964 /* Try SUSE style boot.* init scripts */
966 path = join(*p, "/boot.", name, NULL);
970 /* Drop .service suffix */
971 path[strlen(path)-8] = 0;
972 r = service_load_sysv_path(s, path);
977 #ifdef TARGET_FRUGALWARE
978 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
979 /* Try Frugalware style rc.* init scripts */
981 path = join(*p, "/rc.", name, NULL);
985 /* Drop .service suffix */
986 path[strlen(path)-8] = 0;
987 r = service_load_sysv_path(s, path);
995 if ((UNIT(s)->load_state != UNIT_STUB))
1002 static int service_load_sysv(Service *s) {
1009 /* Load service data from SysV init scripts, preferably with
1010 * LSB headers ... */
1012 if (strv_isempty(UNIT(s)->manager->lookup_paths.sysvinit_path))
1015 if ((t = UNIT(s)->id))
1016 if ((r = service_load_sysv_name(s, t)) < 0)
1019 if (UNIT(s)->load_state == UNIT_STUB)
1020 SET_FOREACH(t, UNIT(s)->names, i) {
1021 if (t == UNIT(s)->id)
1024 if ((r = service_load_sysv_name(s, t)) < 0)
1027 if (UNIT(s)->load_state != UNIT_STUB)
1035 static int fsck_fix_order(Service *s) {
1041 if (s->fsck_passno <= 0)
1044 /* For each pair of services where both have an fsck priority
1045 * we order things based on it. */
1047 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
1056 if (UNIT(t)->load_state != UNIT_LOADED)
1059 if (t->fsck_passno <= 0)
1062 if (t->fsck_passno < s->fsck_passno)
1064 else if (t->fsck_passno > s->fsck_passno)
1069 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
1076 static int service_verify(Service *s) {
1079 if (UNIT(s)->load_state != UNIT_LOADED)
1082 if (!s->exec_command[SERVICE_EXEC_START]) {
1083 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->id);
1087 if (s->type != SERVICE_ONESHOT &&
1088 s->exec_command[SERVICE_EXEC_START]->command_next) {
1089 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1093 if (s->type == SERVICE_ONESHOT &&
1094 s->exec_command[SERVICE_EXEC_RELOAD]) {
1095 log_error("%s has an ExecReload setting, which is not allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1099 if (s->type == SERVICE_DBUS && !s->bus_name) {
1100 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->id);
1104 if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
1105 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id);
1112 static int service_add_default_dependencies(Service *s) {
1117 /* Add a number of automatic dependencies useful for the
1118 * majority of services. */
1120 /* First, pull in base system */
1121 if (UNIT(s)->manager->running_as == MANAGER_SYSTEM) {
1123 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
1126 } else if (UNIT(s)->manager->running_as == MANAGER_USER) {
1128 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
1132 /* Second, activate normal shutdown */
1133 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
1136 static void service_fix_output(Service *s) {
1139 /* If nothing has been explicitly configured, patch default
1140 * output in. If input is socket/tty we avoid this however,
1141 * since in that case we want output to default to the same
1142 * place as we read input from. */
1144 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1145 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1146 s->exec_context.std_input == EXEC_INPUT_NULL)
1147 s->exec_context.std_error = UNIT(s)->manager->default_std_error;
1149 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1150 s->exec_context.std_input == EXEC_INPUT_NULL)
1151 s->exec_context.std_output = UNIT(s)->manager->default_std_output;
1154 static int service_load(Unit *u) {
1156 Service *s = SERVICE(u);
1160 /* Load a .service file */
1161 if ((r = unit_load_fragment(u)) < 0)
1164 #ifdef HAVE_SYSV_COMPAT
1165 /* Load a classic init script as a fallback, if we couldn't find anything */
1166 if (u->load_state == UNIT_STUB)
1167 if ((r = service_load_sysv(s)) < 0)
1171 /* Still nothing found? Then let's give up */
1172 if (u->load_state == UNIT_STUB)
1175 /* We were able to load something, then let's add in the
1176 * dropin directories. */
1177 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
1180 /* This is a new unit? Then let's add in some extras */
1181 if (u->load_state == UNIT_LOADED) {
1182 service_fix_output(s);
1184 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
1187 if ((r = unit_add_default_cgroups(u)) < 0)
1190 #ifdef HAVE_SYSV_COMPAT
1191 if ((r = sysv_fix_order(s)) < 0)
1195 if ((r = fsck_fix_order(s)) < 0)
1199 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
1202 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1203 s->notify_access = NOTIFY_MAIN;
1205 if (s->type == SERVICE_DBUS || s->bus_name)
1206 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true)) < 0)
1209 if (UNIT(s)->default_dependencies)
1210 if ((r = service_add_default_dependencies(s)) < 0)
1214 return service_verify(s);
1217 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1219 ServiceExecCommand c;
1220 Service *s = SERVICE(u);
1221 const char *prefix2;
1226 p2 = strappend(prefix, "\t");
1227 prefix2 = p2 ? p2 : prefix;
1230 "%sService State: %s\n"
1231 "%sPermissionsStartOnly: %s\n"
1232 "%sRootDirectoryStartOnly: %s\n"
1233 "%sRemainAfterExit: %s\n"
1234 "%sGuessMainPID: %s\n"
1237 "%sNotifyAccess: %s\n",
1238 prefix, service_state_to_string(s->state),
1239 prefix, yes_no(s->permissions_start_only),
1240 prefix, yes_no(s->root_directory_start_only),
1241 prefix, yes_no(s->remain_after_exit),
1242 prefix, yes_no(s->guess_main_pid),
1243 prefix, service_type_to_string(s->type),
1244 prefix, service_restart_to_string(s->restart),
1245 prefix, notify_access_to_string(s->notify_access));
1247 if (s->control_pid > 0)
1249 "%sControl PID: %lu\n",
1250 prefix, (unsigned long) s->control_pid);
1252 if (s->main_pid > 0)
1255 "%sMain PID Known: %s\n"
1256 "%sMain PID Alien: %s\n",
1257 prefix, (unsigned long) s->main_pid,
1258 prefix, yes_no(s->main_pid_known),
1259 prefix, yes_no(s->main_pid_alien));
1264 prefix, s->pid_file);
1269 "%sBus Name Good: %s\n",
1270 prefix, s->bus_name,
1271 prefix, yes_no(s->bus_name_good));
1273 exec_context_dump(&s->exec_context, f, prefix);
1275 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1277 if (!s->exec_command[c])
1280 fprintf(f, "%s-> %s:\n",
1281 prefix, service_exec_command_to_string(c));
1283 exec_command_dump_list(s->exec_command[c], f, prefix2);
1286 #ifdef HAVE_SYSV_COMPAT
1289 "%sSysV Init Script Path: %s\n"
1290 "%sSysV Init Script has LSB Header: %s\n"
1291 "%sSysVEnabled: %s\n",
1292 prefix, s->sysv_path,
1293 prefix, yes_no(s->sysv_has_lsb),
1294 prefix, yes_no(s->sysv_enabled));
1296 if (s->sysv_start_priority >= 0)
1298 "%sSysVStartPriority: %i\n",
1299 prefix, s->sysv_start_priority);
1301 if (s->sysv_runlevels)
1302 fprintf(f, "%sSysVRunLevels: %s\n",
1303 prefix, s->sysv_runlevels);
1306 if (s->fsck_passno > 0)
1308 "%sFsckPassNo: %i\n",
1309 prefix, s->fsck_passno);
1312 fprintf(f, "%sStatus Text: %s\n",
1313 prefix, s->status_text);
1318 static int service_load_pid_file(Service *s, bool may_warn) {
1328 if ((r = read_one_line_file(s->pid_file, &k)) < 0) {
1330 log_info("PID file %s not readable (yet?) after %s.",
1331 s->pid_file, service_state_to_string(s->state));
1335 r = parse_pid(k, &pid);
1341 if (kill(pid, 0) < 0 && errno != EPERM) {
1343 log_info("PID %lu read from file %s does not exist.",
1344 (unsigned long) pid, s->pid_file);
1348 if (s->main_pid_known) {
1349 if (pid == s->main_pid)
1352 log_debug("Main PID changing: %lu -> %lu",
1353 (unsigned long) s->main_pid, (unsigned long) pid);
1354 service_unwatch_main_pid(s);
1355 s->main_pid_known = false;
1357 log_debug("Main PID loaded: %lu", (unsigned long) pid);
1359 if ((r = service_set_main_pid(s, pid)) < 0)
1362 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1363 /* FIXME: we need to do something here */
1369 static int service_search_main_pid(Service *s) {
1375 /* If we know it anyway, don't ever fallback to unreliable
1377 if (s->main_pid_known)
1380 if (!s->guess_main_pid)
1383 assert(s->main_pid <= 0);
1385 if ((pid = cgroup_bonding_search_main_pid_list(UNIT(s)->cgroup_bondings)) <= 0)
1388 log_debug("Main PID guessed: %lu", (unsigned long) pid);
1389 if ((r = service_set_main_pid(s, pid)) < 0)
1392 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1393 /* FIXME: we need to do something here */
1399 static void service_notify_sockets_dead(Service *s) {
1405 /* Notifies all our sockets when we die */
1407 if (s->socket_fd >= 0)
1410 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i)
1411 if (u->type == UNIT_SOCKET)
1412 socket_notify_service_dead(SOCKET(u));
1417 static void service_set_state(Service *s, ServiceState state) {
1418 ServiceState old_state;
1421 old_state = s->state;
1424 service_unwatch_pid_file(s);
1426 if (state != SERVICE_START_PRE &&
1427 state != SERVICE_START &&
1428 state != SERVICE_START_POST &&
1429 state != SERVICE_RELOAD &&
1430 state != SERVICE_STOP &&
1431 state != SERVICE_STOP_SIGTERM &&
1432 state != SERVICE_STOP_SIGKILL &&
1433 state != SERVICE_STOP_POST &&
1434 state != SERVICE_FINAL_SIGTERM &&
1435 state != SERVICE_FINAL_SIGKILL &&
1436 state != SERVICE_AUTO_RESTART)
1437 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1439 if (state != SERVICE_START &&
1440 state != SERVICE_START_POST &&
1441 state != SERVICE_RUNNING &&
1442 state != SERVICE_RELOAD &&
1443 state != SERVICE_STOP &&
1444 state != SERVICE_STOP_SIGTERM &&
1445 state != SERVICE_STOP_SIGKILL) {
1446 service_unwatch_main_pid(s);
1447 s->main_command = NULL;
1450 if (state != SERVICE_START_PRE &&
1451 state != SERVICE_START &&
1452 state != SERVICE_START_POST &&
1453 state != SERVICE_RELOAD &&
1454 state != SERVICE_STOP &&
1455 state != SERVICE_STOP_SIGTERM &&
1456 state != SERVICE_STOP_SIGKILL &&
1457 state != SERVICE_STOP_POST &&
1458 state != SERVICE_FINAL_SIGTERM &&
1459 state != SERVICE_FINAL_SIGKILL) {
1460 service_unwatch_control_pid(s);
1461 s->control_command = NULL;
1462 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1465 if (state == SERVICE_DEAD ||
1466 state == SERVICE_STOP ||
1467 state == SERVICE_STOP_SIGTERM ||
1468 state == SERVICE_STOP_SIGKILL ||
1469 state == SERVICE_STOP_POST ||
1470 state == SERVICE_FINAL_SIGTERM ||
1471 state == SERVICE_FINAL_SIGKILL ||
1472 state == SERVICE_FAILED ||
1473 state == SERVICE_AUTO_RESTART)
1474 service_notify_sockets_dead(s);
1476 if (state != SERVICE_START_PRE &&
1477 state != SERVICE_START &&
1478 state != SERVICE_START_POST &&
1479 state != SERVICE_RUNNING &&
1480 state != SERVICE_RELOAD &&
1481 state != SERVICE_STOP &&
1482 state != SERVICE_STOP_SIGTERM &&
1483 state != SERVICE_STOP_SIGKILL &&
1484 state != SERVICE_STOP_POST &&
1485 state != SERVICE_FINAL_SIGTERM &&
1486 state != SERVICE_FINAL_SIGKILL &&
1487 !(state == SERVICE_DEAD && UNIT(s)->job)) {
1488 service_close_socket_fd(s);
1489 service_connection_unref(s);
1492 if (state == SERVICE_STOP)
1493 service_stop_watchdog(s);
1495 /* For the inactive states unit_notify() will trim the cgroup,
1496 * but for exit we have to do that ourselves... */
1497 if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
1498 cgroup_bonding_trim_list(UNIT(s)->cgroup_bondings, true);
1500 if (old_state != state)
1501 log_debug("%s changed %s -> %s", UNIT(s)->id, service_state_to_string(old_state), service_state_to_string(state));
1503 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], !s->reload_failure);
1504 s->reload_failure = false;
1507 static int service_coldplug(Unit *u) {
1508 Service *s = SERVICE(u);
1512 assert(s->state == SERVICE_DEAD);
1514 if (s->deserialized_state != s->state) {
1516 if (s->deserialized_state == SERVICE_START_PRE ||
1517 s->deserialized_state == SERVICE_START ||
1518 s->deserialized_state == SERVICE_START_POST ||
1519 s->deserialized_state == SERVICE_RELOAD ||
1520 s->deserialized_state == SERVICE_STOP ||
1521 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1522 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1523 s->deserialized_state == SERVICE_STOP_POST ||
1524 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1525 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1526 s->deserialized_state == SERVICE_AUTO_RESTART) {
1528 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1531 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1533 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1538 if ((s->deserialized_state == SERVICE_START &&
1539 (s->type == SERVICE_FORKING ||
1540 s->type == SERVICE_DBUS ||
1541 s->type == SERVICE_ONESHOT ||
1542 s->type == SERVICE_NOTIFY)) ||
1543 s->deserialized_state == SERVICE_START_POST ||
1544 s->deserialized_state == SERVICE_RUNNING ||
1545 s->deserialized_state == SERVICE_RELOAD ||
1546 s->deserialized_state == SERVICE_STOP ||
1547 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1548 s->deserialized_state == SERVICE_STOP_SIGKILL)
1549 if (s->main_pid > 0)
1550 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1553 if (s->deserialized_state == SERVICE_START_PRE ||
1554 s->deserialized_state == SERVICE_START ||
1555 s->deserialized_state == SERVICE_START_POST ||
1556 s->deserialized_state == SERVICE_RELOAD ||
1557 s->deserialized_state == SERVICE_STOP ||
1558 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1559 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1560 s->deserialized_state == SERVICE_STOP_POST ||
1561 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1562 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1563 if (s->control_pid > 0)
1564 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1567 service_set_state(s, s->deserialized_state);
1573 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1577 unsigned rn_fds = 0;
1584 if (s->socket_fd >= 0)
1587 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
1592 if (u->type != UNIT_SOCKET)
1597 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1609 if (!(t = new(int, rn_fds+cn_fds))) {
1615 memcpy(t, rfds, rn_fds * sizeof(int));
1616 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1621 rn_fds = rn_fds+cn_fds;
1636 static int service_spawn(
1641 bool apply_permissions,
1643 bool apply_tty_stdin,
1644 bool set_notify_socket,
1649 int *fds = NULL, *fdsbuf = NULL;
1650 unsigned n_fds = 0, n_env = 0;
1651 char **argv = NULL, **final_env = NULL, **our_env = NULL;
1658 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1659 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1660 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1662 if (s->socket_fd >= 0) {
1663 fds = &s->socket_fd;
1666 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1673 if (timeout && s->timeout_usec) {
1674 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1677 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1679 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1684 if (!(our_env = new0(char*, 4))) {
1689 if (set_notify_socket)
1690 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
1695 if (s->main_pid > 0)
1696 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1701 if (!(final_env = strv_env_merge(2,
1702 UNIT(s)->manager->environment,
1717 UNIT(s)->manager->confirm_spawn,
1718 UNIT(s)->cgroup_bondings,
1719 UNIT(s)->cgroup_attributes,
1726 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1727 /* FIXME: we need to do something here */
1733 strv_free(final_env);
1743 strv_free(final_env);
1746 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1751 static int main_pid_good(Service *s) {
1754 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1757 /* If we know the pid file, then lets just check if it is
1759 if (s->main_pid_known) {
1761 /* If it's an alien child let's check if it is still
1763 if (s->main_pid_alien)
1764 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1766 /* .. otherwise assume we'll get a SIGCHLD for it,
1767 * which we really should wait for to collect exit
1768 * status and code */
1769 return s->main_pid > 0;
1772 /* We don't know the pid */
1776 static int control_pid_good(Service *s) {
1779 return s->control_pid > 0;
1782 static int cgroup_good(Service *s) {
1787 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->cgroup_bondings)) < 0)
1793 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1800 if (allow_restart &&
1801 !s->forbid_restart &&
1802 (s->restart == SERVICE_RESTART_ALWAYS ||
1803 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure) ||
1804 (s->restart == SERVICE_RESTART_ON_FAILURE && s->failure) ||
1805 (s->restart == SERVICE_RESTART_ON_ABORT && s->failure &&
1806 (s->main_exec_status.code == CLD_KILLED ||
1807 s->main_exec_status.code == CLD_DUMPED)))) {
1809 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1812 service_set_state(s, SERVICE_AUTO_RESTART);
1814 service_set_state(s, s->failure ? SERVICE_FAILED : SERVICE_DEAD);
1816 s->forbid_restart = false;
1821 log_warning("%s failed to run install restart timer: %s", UNIT(s)->id, strerror(-r));
1822 service_enter_dead(s, false, false);
1825 static void service_enter_signal(Service *s, ServiceState state, bool success);
1827 static void service_enter_stop_post(Service *s, bool success) {
1834 service_unwatch_control_pid(s);
1836 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1837 s->control_command_id = SERVICE_EXEC_STOP_POST;
1839 if ((r = service_spawn(s,
1843 !s->permissions_start_only,
1844 !s->root_directory_start_only,
1847 &s->control_pid)) < 0)
1851 service_set_state(s, SERVICE_STOP_POST);
1853 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1858 log_warning("%s failed to run 'stop-post' task: %s", UNIT(s)->id, strerror(-r));
1859 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1862 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1864 Set *pid_set = NULL;
1865 bool wait_for_exit = false;
1872 if (s->exec_context.kill_mode != KILL_NONE) {
1873 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1875 if (s->main_pid > 0) {
1876 if (kill_and_sigcont(s->main_pid, sig) < 0 && errno != ESRCH)
1877 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1879 wait_for_exit = !s->main_pid_alien;
1882 if (s->control_pid > 0) {
1883 if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
1884 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1886 wait_for_exit = true;
1889 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1891 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1896 /* Exclude the main/control pids from being killed via the cgroup */
1897 if (s->main_pid > 0)
1898 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
1901 if (s->control_pid > 0)
1902 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1905 if ((r = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, sig, true, pid_set)) < 0) {
1906 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1907 log_warning("Failed to kill control group: %s", strerror(-r));
1909 wait_for_exit = true;
1916 if (wait_for_exit) {
1917 if (s->timeout_usec > 0)
1918 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1921 service_set_state(s, state);
1922 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1923 service_enter_stop_post(s, true);
1925 service_enter_dead(s, true, true);
1930 log_warning("%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
1932 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1933 service_enter_stop_post(s, false);
1935 service_enter_dead(s, false, true);
1941 static void service_enter_stop(Service *s, bool success) {
1949 service_unwatch_control_pid(s);
1951 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1952 s->control_command_id = SERVICE_EXEC_STOP;
1954 if ((r = service_spawn(s,
1958 !s->permissions_start_only,
1959 !s->root_directory_start_only,
1962 &s->control_pid)) < 0)
1965 service_set_state(s, SERVICE_STOP);
1967 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1972 log_warning("%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
1973 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1976 static void service_enter_running(Service *s, bool success) {
1977 int main_pid_ok, cgroup_ok;
1983 main_pid_ok = main_pid_good(s);
1984 cgroup_ok = cgroup_good(s);
1986 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
1987 (s->bus_name_good || s->type != SERVICE_DBUS))
1988 service_set_state(s, SERVICE_RUNNING);
1989 else if (s->remain_after_exit)
1990 service_set_state(s, SERVICE_EXITED);
1992 service_enter_stop(s, true);
1995 static void service_enter_start_post(Service *s) {
1999 service_unwatch_control_pid(s);
2001 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
2002 s->control_command_id = SERVICE_EXEC_START_POST;
2004 if ((r = service_spawn(s,
2008 !s->permissions_start_only,
2009 !s->root_directory_start_only,
2012 &s->control_pid)) < 0)
2015 service_set_state(s, SERVICE_START_POST);
2017 service_enter_running(s, true);
2022 log_warning("%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
2023 service_enter_stop(s, false);
2026 static void service_enter_start(Service *s) {
2033 assert(s->exec_command[SERVICE_EXEC_START]);
2034 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2036 if (s->type == SERVICE_FORKING)
2037 service_unwatch_control_pid(s);
2039 service_unwatch_main_pid(s);
2041 /* We want to ensure that nobody leaks processes from
2042 * START_PRE here, so let's go on a killing spree, People
2043 * should not spawn long running processes from START_PRE. */
2044 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, NULL);
2046 if (s->type == SERVICE_FORKING) {
2047 s->control_command_id = SERVICE_EXEC_START;
2048 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2050 s->main_command = NULL;
2052 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2053 s->control_command = NULL;
2055 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2058 if ((r = service_spawn(s,
2060 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
2065 s->notify_access != NOTIFY_NONE,
2069 if (s->type == SERVICE_SIMPLE) {
2070 /* For simple services we immediately start
2071 * the START_POST binaries. */
2073 service_set_main_pid(s, pid);
2074 service_enter_start_post(s);
2076 } else if (s->type == SERVICE_FORKING) {
2078 /* For forking services we wait until the start
2079 * process exited. */
2081 s->control_pid = pid;
2082 service_set_state(s, SERVICE_START);
2084 } else if (s->type == SERVICE_ONESHOT ||
2085 s->type == SERVICE_DBUS ||
2086 s->type == SERVICE_NOTIFY) {
2088 /* For oneshot services we wait until the start
2089 * process exited, too, but it is our main process. */
2091 /* For D-Bus services we know the main pid right away,
2092 * but wait for the bus name to appear on the
2093 * bus. Notify services are similar. */
2095 service_set_main_pid(s, pid);
2096 service_set_state(s, SERVICE_START);
2098 assert_not_reached("Unknown service type");
2103 log_warning("%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
2104 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2107 static void service_enter_start_pre(Service *s) {
2112 service_unwatch_control_pid(s);
2114 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
2116 /* Before we start anything, let's clear up what might
2117 * be left from previous runs. */
2118 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, NULL);
2120 s->control_command_id = SERVICE_EXEC_START_PRE;
2122 if ((r = service_spawn(s,
2126 !s->permissions_start_only,
2127 !s->root_directory_start_only,
2130 &s->control_pid)) < 0)
2133 service_set_state(s, SERVICE_START_PRE);
2135 service_enter_start(s);
2140 log_warning("%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
2141 service_enter_dead(s, false, true);
2144 static void service_enter_restart(Service *s) {
2149 dbus_error_init(&error);
2152 log_info("Job pending for unit, delaying automatic restart.");
2154 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
2158 service_enter_dead(s, true, false);
2160 if ((r = manager_add_job(UNIT(s)->manager, JOB_START, UNIT(s), JOB_FAIL, false, &error, NULL)) < 0)
2163 log_debug("%s scheduled restart job.", UNIT(s)->id);
2167 log_warning("%s failed to schedule restart job: %s", UNIT(s)->id, bus_error(&error, -r));
2168 service_enter_dead(s, false, false);
2170 dbus_error_free(&error);
2173 static void service_enter_reload(Service *s) {
2178 service_unwatch_control_pid(s);
2180 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
2181 s->control_command_id = SERVICE_EXEC_RELOAD;
2183 if ((r = service_spawn(s,
2187 !s->permissions_start_only,
2188 !s->root_directory_start_only,
2191 &s->control_pid)) < 0)
2194 service_set_state(s, SERVICE_RELOAD);
2196 service_enter_running(s, true);
2201 log_warning("%s failed to run 'reload' task: %s", UNIT(s)->id, strerror(-r));
2202 s->reload_failure = true;
2203 service_enter_running(s, true);
2206 static void service_run_next_control(Service *s, bool success) {
2210 assert(s->control_command);
2211 assert(s->control_command->command_next);
2216 assert(s->control_command_id != SERVICE_EXEC_START);
2218 s->control_command = s->control_command->command_next;
2219 service_unwatch_control_pid(s);
2221 if ((r = service_spawn(s,
2225 !s->permissions_start_only,
2226 !s->root_directory_start_only,
2227 s->control_command_id == SERVICE_EXEC_START_PRE ||
2228 s->control_command_id == SERVICE_EXEC_STOP_POST,
2230 &s->control_pid)) < 0)
2236 log_warning("%s failed to run next control task: %s", UNIT(s)->id, strerror(-r));
2238 if (s->state == SERVICE_START_PRE)
2239 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2240 else if (s->state == SERVICE_STOP)
2241 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2242 else if (s->state == SERVICE_STOP_POST)
2243 service_enter_dead(s, false, true);
2244 else if (s->state == SERVICE_RELOAD) {
2245 s->reload_failure = true;
2246 service_enter_running(s, true);
2248 service_enter_stop(s, false);
2251 static void service_run_next_main(Service *s, bool success) {
2256 assert(s->main_command);
2257 assert(s->main_command->command_next);
2258 assert(s->type == SERVICE_ONESHOT);
2263 s->main_command = s->main_command->command_next;
2264 service_unwatch_main_pid(s);
2266 if ((r = service_spawn(s,
2273 s->notify_access != NOTIFY_NONE,
2277 service_set_main_pid(s, pid);
2282 log_warning("%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
2283 service_enter_stop(s, false);
2286 static int service_start(Unit *u) {
2287 Service *s = SERVICE(u);
2291 /* We cannot fulfill this request right now, try again later
2293 if (s->state == SERVICE_STOP ||
2294 s->state == SERVICE_STOP_SIGTERM ||
2295 s->state == SERVICE_STOP_SIGKILL ||
2296 s->state == SERVICE_STOP_POST ||
2297 s->state == SERVICE_FINAL_SIGTERM ||
2298 s->state == SERVICE_FINAL_SIGKILL)
2301 /* Already on it! */
2302 if (s->state == SERVICE_START_PRE ||
2303 s->state == SERVICE_START ||
2304 s->state == SERVICE_START_POST)
2307 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED || s->state == SERVICE_AUTO_RESTART);
2309 /* Make sure we don't enter a busy loop of some kind. */
2310 if (!ratelimit_test(&s->ratelimit)) {
2311 log_warning("%s start request repeated too quickly, refusing to start.", u->id);
2316 s->main_pid_known = false;
2317 s->main_pid_alien = false;
2318 s->forbid_restart = false;
2320 service_enter_start_pre(s);
2324 static int service_stop(Unit *u) {
2325 Service *s = SERVICE(u);
2329 /* This is a user request, so don't do restarts on this
2331 s->forbid_restart = true;
2334 if (s->state == SERVICE_STOP ||
2335 s->state == SERVICE_STOP_SIGTERM ||
2336 s->state == SERVICE_STOP_SIGKILL ||
2337 s->state == SERVICE_STOP_POST ||
2338 s->state == SERVICE_FINAL_SIGTERM ||
2339 s->state == SERVICE_FINAL_SIGKILL)
2342 /* Don't allow a restart */
2343 if (s->state == SERVICE_AUTO_RESTART) {
2344 service_set_state(s, SERVICE_DEAD);
2348 /* If there's already something running we go directly into
2350 if (s->state == SERVICE_START_PRE ||
2351 s->state == SERVICE_START ||
2352 s->state == SERVICE_START_POST ||
2353 s->state == SERVICE_RELOAD) {
2354 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2358 assert(s->state == SERVICE_RUNNING ||
2359 s->state == SERVICE_EXITED);
2361 service_enter_stop(s, true);
2365 static int service_reload(Unit *u) {
2366 Service *s = SERVICE(u);
2370 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2372 service_enter_reload(s);
2376 static bool service_can_reload(Unit *u) {
2377 Service *s = SERVICE(u);
2381 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2384 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2385 Service *s = SERVICE(u);
2391 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2392 unit_serialize_item(u, f, "failure", yes_no(s->failure));
2394 if (s->control_pid > 0)
2395 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2397 if (s->main_pid_known && s->main_pid > 0)
2398 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2400 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2403 unit_serialize_item(u, f, "status-text", s->status_text);
2405 /* There's a minor uncleanliness here: if there are multiple
2406 * commands attached here, we will start from the first one
2408 if (s->control_command_id >= 0)
2409 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2411 if (s->socket_fd >= 0) {
2414 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2417 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2420 if (s->main_exec_status.pid > 0) {
2421 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2422 dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp);
2423 dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp);
2425 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2426 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2427 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2430 if (dual_timestamp_is_set(&s->watchdog_timestamp))
2431 dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
2436 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2437 Service *s = SERVICE(u);
2444 if (streq(key, "state")) {
2447 if ((state = service_state_from_string(value)) < 0)
2448 log_debug("Failed to parse state value %s", value);
2450 s->deserialized_state = state;
2451 } else if (streq(key, "failure")) {
2454 if ((b = parse_boolean(value)) < 0)
2455 log_debug("Failed to parse failure value %s", value);
2457 s->failure = b || s->failure;
2458 } else if (streq(key, "control-pid")) {
2461 if (parse_pid(value, &pid) < 0)
2462 log_debug("Failed to parse control-pid value %s", value);
2464 s->control_pid = pid;
2465 } else if (streq(key, "main-pid")) {
2468 if (parse_pid(value, &pid) < 0)
2469 log_debug("Failed to parse main-pid value %s", value);
2471 service_set_main_pid(s, (pid_t) pid);
2472 } else if (streq(key, "main-pid-known")) {
2475 if ((b = parse_boolean(value)) < 0)
2476 log_debug("Failed to parse main-pid-known value %s", value);
2478 s->main_pid_known = b;
2479 } else if (streq(key, "status-text")) {
2482 if ((t = strdup(value))) {
2483 free(s->status_text);
2487 } else if (streq(key, "control-command")) {
2488 ServiceExecCommand id;
2490 if ((id = service_exec_command_from_string(value)) < 0)
2491 log_debug("Failed to parse exec-command value %s", value);
2493 s->control_command_id = id;
2494 s->control_command = s->exec_command[id];
2496 } else if (streq(key, "socket-fd")) {
2499 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2500 log_debug("Failed to parse socket-fd value %s", value);
2503 if (s->socket_fd >= 0)
2504 close_nointr_nofail(s->socket_fd);
2505 s->socket_fd = fdset_remove(fds, fd);
2507 } else if (streq(key, "main-exec-status-pid")) {
2510 if (parse_pid(value, &pid) < 0)
2511 log_debug("Failed to parse main-exec-status-pid value %s", value);
2513 s->main_exec_status.pid = pid;
2514 } else if (streq(key, "main-exec-status-code")) {
2517 if (safe_atoi(value, &i) < 0)
2518 log_debug("Failed to parse main-exec-status-code value %s", value);
2520 s->main_exec_status.code = i;
2521 } else if (streq(key, "main-exec-status-status")) {
2524 if (safe_atoi(value, &i) < 0)
2525 log_debug("Failed to parse main-exec-status-status value %s", value);
2527 s->main_exec_status.status = i;
2528 } else if (streq(key, "main-exec-status-start"))
2529 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2530 else if (streq(key, "main-exec-status-exit"))
2531 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2532 else if (streq(key, "watchdog-timestamp"))
2533 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
2535 log_debug("Unknown serialization key '%s'", key);
2540 static UnitActiveState service_active_state(Unit *u) {
2543 return state_translation_table[SERVICE(u)->state];
2546 static const char *service_sub_state_to_string(Unit *u) {
2549 return service_state_to_string(SERVICE(u)->state);
2552 static bool service_check_gc(Unit *u) {
2553 Service *s = SERVICE(u);
2557 /* Never clean up services that still have a process around,
2558 * even if the service is formally dead. */
2559 if (cgroup_good(s) > 0 ||
2560 main_pid_good(s) > 0 ||
2561 control_pid_good(s) > 0)
2564 #ifdef HAVE_SYSV_COMPAT
2572 static bool service_check_snapshot(Unit *u) {
2573 Service *s = SERVICE(u);
2577 return !s->got_socket_fd;
2580 static int service_retry_pid_file(Service *s) {
2583 assert(s->pid_file);
2584 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2586 r = service_load_pid_file(s, false);
2590 service_unwatch_pid_file(s);
2592 service_enter_running(s, true);
2596 static int service_watch_pid_file(Service *s) {
2599 log_debug("Setting watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path);
2600 r = path_spec_watch(s->pid_file_pathspec, UNIT(s));
2604 /* the pidfile might have appeared just before we set the watch */
2605 service_retry_pid_file(s);
2609 log_error("Failed to set a watch for %s's PID file %s: %s",
2610 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
2611 service_unwatch_pid_file(s);
2615 static int service_demand_pid_file(Service *s) {
2618 assert(s->pid_file);
2619 assert(!s->pid_file_pathspec);
2621 ps = new0(PathSpec, 1);
2625 ps->path = strdup(s->pid_file);
2631 path_kill_slashes(ps->path);
2633 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2634 * keep their PID file open all the time. */
2635 ps->type = PATH_MODIFIED;
2636 ps->inotify_fd = -1;
2638 s->pid_file_pathspec = ps;
2640 return service_watch_pid_file(s);
2643 static void service_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
2644 Service *s = SERVICE(u);
2648 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2649 assert(s->pid_file_pathspec);
2650 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2652 log_debug("inotify event for %s", u->id);
2654 if (path_spec_fd_event(s->pid_file_pathspec, events) < 0)
2657 if (service_retry_pid_file(s) == 0)
2660 if (service_watch_pid_file(s) < 0)
2665 service_unwatch_pid_file(s);
2666 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2669 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2670 Service *s = SERVICE(u);
2676 if (!UNIT(s)->fragment_path)
2677 success = is_clean_exit_lsb(code, status);
2679 success = is_clean_exit(code, status);
2681 if (s->main_pid == pid) {
2682 /* Forking services may occasionally move to a new PID.
2683 * As long as they update the PID file before exiting the old
2684 * PID, they're fine. */
2685 if (service_load_pid_file(s, false) == 0)
2689 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2691 /* If this is not a forking service than the main
2692 * process got started and hence we copy the exit
2693 * status so that it is recorded both as main and as
2694 * control process exit status */
2695 if (s->main_command) {
2696 s->main_command->exec_status = s->main_exec_status;
2698 if (s->main_command->ignore)
2702 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2703 "%s: main process exited, code=%s, status=%i", u->id, sigchld_code_to_string(code), status);
2704 s->failure = s->failure || !success;
2706 if (s->main_command &&
2707 s->main_command->command_next &&
2710 /* There is another command to *
2711 * execute, so let's do that. */
2713 log_debug("%s running next main command for state %s", u->id, service_state_to_string(s->state));
2714 service_run_next_main(s, success);
2718 /* The service exited, so the service is officially
2720 s->main_command = NULL;
2724 case SERVICE_START_POST:
2725 case SERVICE_RELOAD:
2727 /* Need to wait until the operation is
2732 if (s->type == SERVICE_ONESHOT) {
2733 /* This was our main goal, so let's go on */
2735 service_enter_start_post(s);
2737 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2740 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2745 case SERVICE_RUNNING:
2746 service_enter_running(s, success);
2749 case SERVICE_STOP_SIGTERM:
2750 case SERVICE_STOP_SIGKILL:
2752 if (!control_pid_good(s))
2753 service_enter_stop_post(s, success);
2755 /* If there is still a control process, wait for that first */
2759 assert_not_reached("Uh, main process died at wrong time.");
2763 } else if (s->control_pid == pid) {
2767 if (s->control_command) {
2768 exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
2770 if (s->control_command->ignore)
2774 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2775 "%s: control process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status);
2776 s->failure = s->failure || !success;
2778 if (s->control_command &&
2779 s->control_command->command_next &&
2782 /* There is another command to *
2783 * execute, so let's do that. */
2785 log_debug("%s running next control command for state %s", u->id, service_state_to_string(s->state));
2786 service_run_next_control(s, success);
2789 /* No further commands for this step, so let's
2790 * figure out what to do next */
2792 s->control_command = NULL;
2793 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2795 log_debug("%s got final SIGCHLD for state %s", u->id, service_state_to_string(s->state));
2799 case SERVICE_START_PRE:
2801 service_enter_start(s);
2803 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2807 assert(s->type == SERVICE_FORKING);
2810 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2815 /* Let's try to load the pid file here if we can.
2816 * The PID file might actually be created by a START_POST
2817 * script. In that case don't worry if the loading fails. */
2818 bool has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
2819 int r = service_load_pid_file(s, !has_start_post);
2820 if (!has_start_post && r < 0) {
2821 r = service_demand_pid_file(s);
2822 if (r < 0 || !cgroup_good(s))
2823 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2827 service_search_main_pid(s);
2829 service_enter_start_post(s);
2832 case SERVICE_START_POST:
2834 service_enter_stop(s, false);
2839 int r = service_load_pid_file(s, true);
2841 r = service_demand_pid_file(s);
2842 if (r < 0 || !cgroup_good(s))
2843 service_enter_stop(s, false);
2847 service_search_main_pid(s);
2849 service_enter_running(s, true);
2852 case SERVICE_RELOAD:
2854 service_load_pid_file(s, true);
2855 service_search_main_pid(s);
2858 s->reload_failure = !success;
2859 service_enter_running(s, true);
2863 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2866 case SERVICE_STOP_SIGTERM:
2867 case SERVICE_STOP_SIGKILL:
2868 if (main_pid_good(s) <= 0)
2869 service_enter_stop_post(s, success);
2871 /* If there is still a service
2872 * process around, wait until
2873 * that one quit, too */
2876 case SERVICE_STOP_POST:
2877 case SERVICE_FINAL_SIGTERM:
2878 case SERVICE_FINAL_SIGKILL:
2879 service_enter_dead(s, success, true);
2883 assert_not_reached("Uh, control process died at wrong time.");
2888 /* Notify clients about changed exit status */
2889 unit_add_to_dbus_queue(u);
2892 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2893 Service *s = SERVICE(u);
2896 assert(elapsed == 1);
2898 assert(w == &s->timer_watch);
2902 case SERVICE_START_PRE:
2904 log_warning("%s operation timed out. Terminating.", u->id);
2905 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2908 case SERVICE_START_POST:
2909 log_warning("%s operation timed out. Stopping.", u->id);
2910 service_enter_stop(s, false);
2913 case SERVICE_RELOAD:
2914 log_warning("%s operation timed out. Stopping.", u->id);
2915 s->reload_failure = true;
2916 service_enter_running(s, true);
2920 log_warning("%s stopping timed out. Terminating.", u->id);
2921 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2924 case SERVICE_STOP_SIGTERM:
2925 if (s->exec_context.send_sigkill) {
2926 log_warning("%s stopping timed out. Killing.", u->id);
2927 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2929 log_warning("%s stopping timed out. Skipping SIGKILL.", u->id);
2930 service_enter_stop_post(s, false);
2935 case SERVICE_STOP_SIGKILL:
2936 /* Uh, we sent a SIGKILL and it is still not gone?
2937 * Must be something we cannot kill, so let's just be
2938 * weirded out and continue */
2940 log_warning("%s still around after SIGKILL. Ignoring.", u->id);
2941 service_enter_stop_post(s, false);
2944 case SERVICE_STOP_POST:
2945 log_warning("%s stopping timed out (2). Terminating.", u->id);
2946 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2949 case SERVICE_FINAL_SIGTERM:
2950 if (s->exec_context.send_sigkill) {
2951 log_warning("%s stopping timed out (2). Killing.", u->id);
2952 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2954 log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->id);
2955 service_enter_dead(s, false, true);
2960 case SERVICE_FINAL_SIGKILL:
2961 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->id);
2962 service_enter_dead(s, false, true);
2965 case SERVICE_AUTO_RESTART:
2966 log_info("%s holdoff time over, scheduling restart.", u->id);
2967 service_enter_restart(s);
2971 assert_not_reached("Timeout at wrong time.");
2975 static void service_cgroup_notify_event(Unit *u) {
2976 Service *s = SERVICE(u);
2980 log_debug("%s: cgroup is empty", u->id);
2984 /* Waiting for SIGCHLD is usually more interesting,
2985 * because it includes return codes/signals. Which is
2986 * why we ignore the cgroup events for most cases,
2987 * except when we don't know pid which to expect the
2991 case SERVICE_START_POST:
2992 /* If we were hoping for the daemon to write its PID file,
2993 * we can give up now. */
2994 if (s->pid_file_pathspec) {
2995 log_warning("%s never wrote its PID file. Failing.", UNIT(s)->id);
2996 service_unwatch_pid_file(s);
2997 if (s->state == SERVICE_START)
2998 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
3000 service_enter_stop(s, false);
3004 case SERVICE_RUNNING:
3005 service_enter_running(s, true);
3008 case SERVICE_STOP_SIGTERM:
3009 case SERVICE_STOP_SIGKILL:
3011 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3012 service_enter_stop_post(s, true);
3016 case SERVICE_FINAL_SIGTERM:
3017 case SERVICE_FINAL_SIGKILL:
3018 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3019 service_enter_dead(s, true, true);
3028 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3029 Service *s = SERVICE(u);
3034 if (s->notify_access == NOTIFY_NONE) {
3035 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
3036 u->id, (unsigned long) pid);
3040 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3041 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
3042 u->id, (unsigned long) pid, (unsigned long) s->main_pid);
3046 log_debug("%s: Got message", u->id);
3048 /* Interpret MAINPID= */
3049 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3050 (s->state == SERVICE_START ||
3051 s->state == SERVICE_START_POST ||
3052 s->state == SERVICE_RUNNING ||
3053 s->state == SERVICE_RELOAD)) {
3055 if (parse_pid(e + 8, &pid) < 0)
3056 log_warning("Failed to parse notification message %s", e);
3058 log_debug("%s: got %s", u->id, e);
3059 service_set_main_pid(s, pid);
3063 /* Interpret READY= */
3064 if (s->type == SERVICE_NOTIFY &&
3065 s->state == SERVICE_START &&
3066 strv_find(tags, "READY=1")) {
3067 log_debug("%s: got READY=1", u->id);
3069 service_enter_start_post(s);
3072 /* Interpret STATUS= */
3073 if ((e = strv_find_prefix(tags, "STATUS="))) {
3077 if (!(t = strdup(e+7))) {
3078 log_error("Failed to allocate string.");
3082 log_debug("%s: got %s", u->id, e);
3084 free(s->status_text);
3087 free(s->status_text);
3088 s->status_text = NULL;
3092 if (strv_find(tags, "WATCHDOG=1")) {
3093 log_debug("%s: got WATCHDOG=1", u->id);
3094 service_reset_watchdog(s);
3097 /* Notify clients about changed status or main pid */
3098 unit_add_to_dbus_queue(u);
3101 #ifdef HAVE_SYSV_COMPAT
3104 static void sysv_facility_in_insserv_conf(Manager *mgr) {
3108 if (!(f = fopen("/etc/insserv.conf", "re"))) {
3109 r = errno == ENOENT ? 0 : -errno;
3114 char l[LINE_MAX], *t;
3115 char **parsed = NULL;
3117 if (!fgets(l, sizeof(l), f)) {
3122 log_error("Failed to read configuration file '/etc/insserv.conf': %s", strerror(-r));
3127 if (*t != '$' && *t != '<')
3130 parsed = strv_split(t,WHITESPACE);
3131 /* we ignore <interactive>, not used, equivalent to X-Interactive */
3132 if (parsed && !startswith_no_case (parsed[0], "<interactive>")) {
3135 if (sysv_translate_facility(parsed[0], NULL, &facility) < 0)
3137 if ((u = manager_get_unit(mgr, facility)) && (u->type == UNIT_TARGET)) {
3139 char *dep = NULL, *name, **j;
3141 STRV_FOREACH (j, parsed+1) {
3150 if (sysv_translate_facility(name, NULL, &dep) < 0)
3153 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, e, dep, NULL, true);
3168 static int service_enumerate(Manager *m) {
3172 char *path = NULL, *fpath = NULL, *name = NULL;
3173 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
3180 if (m->running_as != MANAGER_SYSTEM)
3183 zero(runlevel_services);
3185 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3186 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3190 path = join(*p, "/", rcnd_table[i].path, NULL);
3199 if (!(d = opendir(path))) {
3200 if (errno != ENOENT)
3201 log_warning("opendir() failed on %s: %s", path, strerror(errno));
3206 while ((de = readdir(d))) {
3209 if (ignore_file(de->d_name))
3212 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3215 if (strlen(de->d_name) < 4)
3218 a = undecchar(de->d_name[1]);
3219 b = undecchar(de->d_name[2]);
3225 fpath = join(path, "/", de->d_name, NULL);
3231 if (access(fpath, X_OK) < 0) {
3233 if (errno != ENOENT)
3234 log_warning("access() failed on %s: %s", fpath, strerror(errno));
3240 if (!(name = sysv_translate_name(de->d_name + 3))) {
3245 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
3246 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3250 if (de->d_name[0] == 'S') {
3252 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
3253 SERVICE(service)->sysv_start_priority_from_rcnd =
3254 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3256 SERVICE(service)->sysv_enabled = true;
3259 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
3262 if ((r = set_put(runlevel_services[i], service)) < 0)
3265 } else if (de->d_name[0] == 'K' &&
3266 (rcnd_table[i].type == RUNLEVEL_DOWN ||
3267 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
3269 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
3272 if ((r = set_put(shutdown_services, service)) < 0)
3278 /* Now we loaded all stubs and are aware of the lowest
3279 start-up priority for all services, not let's actually load
3280 the services, this will also tell us which services are
3281 actually native now */
3282 manager_dispatch_load_queue(m);
3284 /* If this is a native service, rely on native ways to pull in
3285 * a service, don't pull it in via sysv rcN.d links. */
3286 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3287 SET_FOREACH(service, runlevel_services[i], j) {
3288 service = unit_follow_merge(service);
3290 if (service->fragment_path)
3293 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3297 /* We honour K links only for halt/reboot. For the normal
3298 * runlevels we assume the stop jobs will be implicitly added
3299 * by the core logic. Also, we don't really distinguish here
3300 * between the runlevels 0 and 6 and just add them to the
3301 * special shutdown target. On SUSE the boot.d/ runlevel is
3302 * also used for shutdown, so we add links for that too to the
3303 * shutdown target.*/
3304 SET_FOREACH(service, shutdown_services, j) {
3305 service = unit_follow_merge(service);
3307 if (service->fragment_path)
3310 if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
3317 sysv_facility_in_insserv_conf (m);
3325 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3326 set_free(runlevel_services[i]);
3327 set_free(shutdown_services);
3336 static void service_bus_name_owner_change(
3339 const char *old_owner,
3340 const char *new_owner) {
3342 Service *s = SERVICE(u);
3347 assert(streq(s->bus_name, name));
3348 assert(old_owner || new_owner);
3350 if (old_owner && new_owner)
3351 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->id, name, old_owner, new_owner);
3353 log_debug("%s's D-Bus name %s no longer registered by %s", u->id, name, old_owner);
3355 log_debug("%s's D-Bus name %s now registered by %s", u->id, name, new_owner);
3357 s->bus_name_good = !!new_owner;
3359 if (s->type == SERVICE_DBUS) {
3361 /* service_enter_running() will figure out what to
3363 if (s->state == SERVICE_RUNNING)
3364 service_enter_running(s, true);
3365 else if (s->state == SERVICE_START && new_owner)
3366 service_enter_start_post(s);
3368 } else if (new_owner &&
3370 (s->state == SERVICE_START ||
3371 s->state == SERVICE_START_POST ||
3372 s->state == SERVICE_RUNNING ||
3373 s->state == SERVICE_RELOAD)) {
3375 /* Try to acquire PID from bus service */
3376 log_debug("Trying to acquire PID from D-Bus name...");
3378 bus_query_pid(u->manager, name);
3382 static void service_bus_query_pid_done(
3387 Service *s = SERVICE(u);
3392 log_debug("%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
3394 if (s->main_pid <= 0 &&
3395 (s->state == SERVICE_START ||
3396 s->state == SERVICE_START_POST ||
3397 s->state == SERVICE_RUNNING ||
3398 s->state == SERVICE_RELOAD))
3399 service_set_main_pid(s, pid);
3402 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3407 /* This is called by the socket code when instantiating a new
3408 * service for a stream socket and the socket needs to be
3411 if (UNIT(s)->load_state != UNIT_LOADED)
3414 if (s->socket_fd >= 0)
3417 if (s->state != SERVICE_DEAD)
3421 s->got_socket_fd = true;
3423 unit_ref_set(&s->accept_socket, UNIT(sock));
3425 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3428 static void service_reset_failed(Unit *u) {
3429 Service *s = SERVICE(u);
3433 if (s->state == SERVICE_FAILED)
3434 service_set_state(s, SERVICE_DEAD);
3439 static bool service_need_daemon_reload(Unit *u) {
3440 Service *s = SERVICE(u);
3444 #ifdef HAVE_SYSV_COMPAT
3449 if (stat(s->sysv_path, &st) < 0)
3450 /* What, cannot access this anymore? */
3453 if (s->sysv_mtime > 0 &&
3454 timespec_load(&st.st_mtim) != s->sysv_mtime)
3462 static int service_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
3463 Service *s = SERVICE(u);
3465 Set *pid_set = NULL;
3469 if (s->main_pid <= 0 && who == KILL_MAIN) {
3470 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
3474 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3475 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
3479 if (who == KILL_CONTROL || who == KILL_ALL)
3480 if (s->control_pid > 0)
3481 if (kill(s->control_pid, signo) < 0)
3484 if (who == KILL_MAIN || who == KILL_ALL)
3485 if (s->main_pid > 0)
3486 if (kill(s->main_pid, signo) < 0)
3489 if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
3492 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
3495 /* Exclude the control/main pid from being killed via the cgroup */
3496 if (s->control_pid > 0)
3497 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
3502 if (s->main_pid > 0)
3503 if ((q = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) {
3508 if ((q = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, signo, false, pid_set)) < 0)
3509 if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
3520 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3521 [SERVICE_DEAD] = "dead",
3522 [SERVICE_START_PRE] = "start-pre",
3523 [SERVICE_START] = "start",
3524 [SERVICE_START_POST] = "start-post",
3525 [SERVICE_RUNNING] = "running",
3526 [SERVICE_EXITED] = "exited",
3527 [SERVICE_RELOAD] = "reload",
3528 [SERVICE_STOP] = "stop",
3529 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3530 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3531 [SERVICE_STOP_POST] = "stop-post",
3532 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3533 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3534 [SERVICE_FAILED] = "failed",
3535 [SERVICE_AUTO_RESTART] = "auto-restart",
3538 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3540 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3541 [SERVICE_RESTART_NO] = "no",
3542 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3543 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3544 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3545 [SERVICE_RESTART_ALWAYS] = "always"
3548 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3550 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3551 [SERVICE_SIMPLE] = "simple",
3552 [SERVICE_FORKING] = "forking",
3553 [SERVICE_ONESHOT] = "oneshot",
3554 [SERVICE_DBUS] = "dbus",
3555 [SERVICE_NOTIFY] = "notify"
3558 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3560 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3561 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3562 [SERVICE_EXEC_START] = "ExecStart",
3563 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3564 [SERVICE_EXEC_RELOAD] = "ExecReload",
3565 [SERVICE_EXEC_STOP] = "ExecStop",
3566 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3569 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3571 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3572 [NOTIFY_NONE] = "none",
3573 [NOTIFY_MAIN] = "main",
3574 [NOTIFY_ALL] = "all"
3577 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3579 const UnitVTable service_vtable = {
3580 .suffix = ".service",
3581 .object_size = sizeof(Service),
3586 .show_status = true,
3588 .init = service_init,
3589 .done = service_done,
3590 .load = service_load,
3592 .coldplug = service_coldplug,
3594 .dump = service_dump,
3596 .start = service_start,
3597 .stop = service_stop,
3598 .reload = service_reload,
3600 .can_reload = service_can_reload,
3602 .kill = service_kill,
3604 .serialize = service_serialize,
3605 .deserialize_item = service_deserialize_item,
3607 .active_state = service_active_state,
3608 .sub_state_to_string = service_sub_state_to_string,
3610 .check_gc = service_check_gc,
3611 .check_snapshot = service_check_snapshot,
3613 .sigchld_event = service_sigchld_event,
3614 .timer_event = service_timer_event,
3615 .fd_event = service_fd_event,
3617 .reset_failed = service_reset_failed,
3619 .need_daemon_reload = service_need_daemon_reload,
3621 .cgroup_notify_empty = service_cgroup_notify_event,
3622 .notify_message = service_notify_message,
3624 .bus_name_owner_change = service_bus_name_owner_change,
3625 .bus_query_pid_done = service_bus_query_pid_done,
3627 .bus_interface = "org.freedesktop.systemd1.Service",
3628 .bus_message_handler = bus_service_message_handler,
3629 .bus_invalidating_properties = bus_service_invalidating_properties,
3631 #ifdef HAVE_SYSV_COMPAT
3632 .enumerate = service_enumerate