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 Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include <sys/reboot.h>
31 #include "load-fragment.h"
32 #include "load-dropin.h"
35 #include "unit-name.h"
36 #include "unit-printf.h"
37 #include "dbus-service.h"
39 #include "exit-status.h"
41 #include "path-util.h"
46 #include "bus-error.h"
49 #ifdef HAVE_SYSV_COMPAT
51 #define DEFAULT_SYSV_TIMEOUT_USEC (5*USEC_PER_MINUTE)
53 typedef enum RunlevelType {
61 const RunlevelType type;
63 /* Standard SysV runlevels for start-up */
64 { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
65 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
66 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
67 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
68 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
70 /* Standard SysV runlevels for shutdown */
71 { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
72 { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN }
74 /* Note that the order here matters, as we read the
75 directories in this order, and we want to make sure that
76 sysv_start_priority is known when we first load the
77 unit. And that value we only know from S links. Hence
78 UP must be read before DOWN */
81 #define RUNLEVELS_UP "12345"
84 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
85 [SERVICE_DEAD] = UNIT_INACTIVE,
86 [SERVICE_START_PRE] = UNIT_ACTIVATING,
87 [SERVICE_START] = UNIT_ACTIVATING,
88 [SERVICE_START_POST] = UNIT_ACTIVATING,
89 [SERVICE_RUNNING] = UNIT_ACTIVE,
90 [SERVICE_EXITED] = UNIT_ACTIVE,
91 [SERVICE_RELOAD] = UNIT_RELOADING,
92 [SERVICE_STOP] = UNIT_DEACTIVATING,
93 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
94 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
95 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
96 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
97 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
98 [SERVICE_FAILED] = UNIT_FAILED,
99 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
102 /* For Type=idle we never want to delay any other jobs, hence we
103 * consider idle jobs active as soon as we start working on them */
104 static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = {
105 [SERVICE_DEAD] = UNIT_INACTIVE,
106 [SERVICE_START_PRE] = UNIT_ACTIVE,
107 [SERVICE_START] = UNIT_ACTIVE,
108 [SERVICE_START_POST] = UNIT_ACTIVE,
109 [SERVICE_RUNNING] = UNIT_ACTIVE,
110 [SERVICE_EXITED] = UNIT_ACTIVE,
111 [SERVICE_RELOAD] = UNIT_RELOADING,
112 [SERVICE_STOP] = UNIT_DEACTIVATING,
113 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
114 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
115 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
116 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
117 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
118 [SERVICE_FAILED] = UNIT_FAILED,
119 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
122 static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata);
123 static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata);
124 static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata);
126 static void service_enter_signal(Service *s, ServiceState state, ServiceResult f);
128 static void service_init(Unit *u) {
129 Service *s = SERVICE(u);
132 assert(u->load_state == UNIT_STUB);
134 s->timeout_start_usec = u->manager->default_timeout_start_usec;
135 s->timeout_stop_usec = u->manager->default_timeout_stop_usec;
136 s->restart_usec = u->manager->default_restart_usec;
137 s->type = _SERVICE_TYPE_INVALID;
139 #ifdef HAVE_SYSV_COMPAT
140 s->sysv_start_priority = -1;
141 s->sysv_start_priority_from_rcnd = -1;
144 s->guess_main_pid = true;
146 RATELIMIT_INIT(s->start_limit, u->manager->default_start_limit_interval, u->manager->default_start_limit_burst);
148 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
151 static void service_unwatch_control_pid(Service *s) {
154 if (s->control_pid <= 0)
157 unit_unwatch_pid(UNIT(s), s->control_pid);
161 static void service_unwatch_main_pid(Service *s) {
164 if (s->main_pid <= 0)
167 unit_unwatch_pid(UNIT(s), s->main_pid);
171 static void service_unwatch_pid_file(Service *s) {
172 if (!s->pid_file_pathspec)
175 log_debug_unit(UNIT(s)->id, "Stopping watch for %s's PID file %s",
176 UNIT(s)->id, s->pid_file_pathspec->path);
177 path_spec_unwatch(s->pid_file_pathspec);
178 path_spec_done(s->pid_file_pathspec);
179 free(s->pid_file_pathspec);
180 s->pid_file_pathspec = NULL;
183 static int service_set_main_pid(Service *s, pid_t pid) {
194 if (s->main_pid == pid && s->main_pid_known)
197 if (s->main_pid != pid) {
198 service_unwatch_main_pid(s);
199 exec_status_start(&s->main_exec_status, pid);
203 s->main_pid_known = true;
205 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) {
206 log_warning_unit(UNIT(s)->id,
207 "%s: Supervising process "PID_FMT" which is not our child. We'll most likely not notice when it exits.",
210 s->main_pid_alien = true;
212 s->main_pid_alien = false;
217 static void service_close_socket_fd(Service *s) {
220 if (s->socket_fd < 0)
223 s->socket_fd = safe_close(s->socket_fd);
226 static void service_connection_unref(Service *s) {
229 if (!UNIT_ISSET(s->accept_socket))
232 socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
233 unit_ref_unset(&s->accept_socket);
236 static void service_stop_watchdog(Service *s) {
239 s->watchdog_event_source = sd_event_source_unref(s->watchdog_event_source);
240 s->watchdog_timestamp = DUAL_TIMESTAMP_NULL;
243 static void service_start_watchdog(Service *s) {
248 if (s->watchdog_usec <= 0)
251 if (s->watchdog_event_source) {
252 r = sd_event_source_set_time(s->watchdog_event_source, s->watchdog_timestamp.monotonic + s->watchdog_usec);
254 log_warning_unit(UNIT(s)->id, "%s failed to reset watchdog timer: %s", UNIT(s)->id, strerror(-r));
258 r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT);
260 r = sd_event_add_monotonic(UNIT(s)->manager->event, &s->watchdog_event_source, s->watchdog_timestamp.monotonic + s->watchdog_usec, 0, service_dispatch_watchdog, s);
262 log_warning_unit(UNIT(s)->id, "%s failed to add watchdog timer: %s", UNIT(s)->id, strerror(-r));
266 /* Let's process everything else which might be a sign
267 * of living before we consider a service died. */
268 r = sd_event_source_set_priority(s->watchdog_event_source, SD_EVENT_PRIORITY_IDLE);
272 log_warning_unit(UNIT(s)->id, "%s failed to install watchdog timer: %s", UNIT(s)->id, strerror(-r));
275 static void service_reset_watchdog(Service *s) {
278 dual_timestamp_get(&s->watchdog_timestamp);
279 service_start_watchdog(s);
282 static void service_done(Unit *u) {
283 Service *s = SERVICE(u);
290 #ifdef HAVE_SYSV_COMPAT
291 free(s->sysv_runlevels);
292 s->sysv_runlevels = NULL;
295 free(s->status_text);
296 s->status_text = NULL;
298 s->exec_runtime = exec_runtime_unref(s->exec_runtime);
299 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
300 s->control_command = NULL;
301 s->main_command = NULL;
303 set_free(s->restart_ignore_status.code);
304 s->restart_ignore_status.code = NULL;
305 set_free(s->restart_ignore_status.signal);
306 s->restart_ignore_status.signal = NULL;
308 set_free(s->success_status.code);
309 s->success_status.code = NULL;
310 set_free(s->success_status.signal);
311 s->success_status.signal = NULL;
313 /* This will leak a process, but at least no memory or any of
315 service_unwatch_main_pid(s);
316 service_unwatch_control_pid(s);
317 service_unwatch_pid_file(s);
320 unit_unwatch_bus_name(u, s->bus_name);
325 service_close_socket_fd(s);
326 service_connection_unref(s);
328 unit_ref_unset(&s->accept_socket);
330 service_stop_watchdog(s);
332 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
335 static int service_arm_timer(Service *s, usec_t usec) {
340 if (s->timer_event_source) {
341 r = sd_event_source_set_time(s->timer_event_source, now(CLOCK_MONOTONIC) + usec);
345 return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT);
348 return sd_event_add_monotonic(UNIT(s)->manager->event, &s->timer_event_source, now(CLOCK_MONOTONIC) + usec, 0, service_dispatch_timer, s);
351 #ifdef HAVE_SYSV_COMPAT
352 static char *sysv_translate_name(const char *name) {
355 r = new(char, strlen(name) + strlen(".service") + 1);
359 if (endswith(name, ".sh"))
360 /* Drop .sh suffix */
361 strcpy(stpcpy(r, name) - 3, ".service");
363 /* Normal init script name */
364 strcpy(stpcpy(r, name), ".service");
369 static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
371 /* We silently ignore the $ prefix here. According to the LSB
372 * spec it simply indicates whether something is a
373 * standardized name or a distribution-specific one. Since we
374 * just follow what already exists and do not introduce new
375 * uses or names we don't care who introduced a new name. */
377 static const char * const table[] = {
378 /* LSB defined facilities */
380 "network", SPECIAL_NETWORK_TARGET,
381 "named", SPECIAL_NSS_LOOKUP_TARGET,
382 "portmap", SPECIAL_RPCBIND_TARGET,
383 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
385 "time", SPECIAL_TIME_SYNC_TARGET,
395 n = *name == '$' ? name + 1 : name;
397 for (i = 0; i < ELEMENTSOF(table); i += 2) {
399 if (!streq(table[i], n))
405 r = strdup(table[i+1]);
412 /* If we don't know this name, fallback heuristics to figure
413 * out whether something is a target or a service alias. */
416 if (!unit_prefix_is_valid(n))
419 /* Facilities starting with $ are most likely targets */
420 r = unit_name_build(n, NULL, ".target");
421 } else if (filename && streq(name, filename))
422 /* Names equaling the file name of the services are redundant */
425 /* Everything else we assume to be normal service names */
426 r = sysv_translate_name(n);
437 static int sysv_fix_order(Service *s) {
443 if (s->sysv_start_priority < 0)
446 /* For each pair of services where at least one lacks a LSB
447 * header, we use the start priority value to order things. */
449 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
452 bool special_s, special_t;
459 if (UNIT(t)->load_state != UNIT_LOADED)
462 if (t->sysv_start_priority < 0)
465 /* If both units have modern headers we don't care
466 * about the priorities */
467 if ((UNIT(s)->fragment_path || s->sysv_has_lsb) &&
468 (UNIT(t)->fragment_path || t->sysv_has_lsb))
471 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
472 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
474 if (special_t && !special_s)
476 else if (special_s && !special_t)
478 else if (t->sysv_start_priority < s->sysv_start_priority)
480 else if (t->sysv_start_priority > s->sysv_start_priority)
485 /* FIXME: Maybe we should compare the name here lexicographically? */
487 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
494 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
497 if (!(c = new0(ExecCommand, 1)))
500 if (!(c->path = strdup(path))) {
505 if (!(c->argv = strv_new(path, arg1, NULL))) {
514 static int sysv_exec_commands(Service *s, const bool supports_reload) {
519 assert(UNIT(s)->source_path);
521 c = exec_command_new(UNIT(s)->source_path, "start");
524 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
526 c = exec_command_new(UNIT(s)->source_path, "stop");
529 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
531 if (supports_reload) {
532 c = exec_command_new(UNIT(s)->source_path, "reload");
535 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
541 static bool usage_contains_reload(const char *line) {
542 return (strcasestr(line, "{reload|") ||
543 strcasestr(line, "{reload}") ||
544 strcasestr(line, "{reload\"") ||
545 strcasestr(line, "|reload|") ||
546 strcasestr(line, "|reload}") ||
547 strcasestr(line, "|reload\""));
550 static int service_load_sysv_path(Service *s, const char *path) {
562 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
564 bool supports_reload = false;
571 f = fopen(path, "re");
573 r = errno == ENOENT ? 0 : -errno;
577 if (fstat(fileno(f), &st) < 0) {
582 free(u->source_path);
583 u->source_path = strdup(path);
584 if (!u->source_path) {
588 u->source_mtime = timespec_load(&st.st_mtim);
590 if (null_or_empty(&st)) {
591 u->load_state = UNIT_MASKED;
599 char l[LINE_MAX], *t;
601 if (!fgets(l, sizeof(l), f)) {
606 log_error_unit(u->id,
607 "Failed to read configuration file '%s': %s",
616 /* Try to figure out whether this init script supports
617 * the reload operation. This heuristic looks for
618 * "Usage" lines which include the reload option. */
619 if ( state == USAGE_CONTINUATION ||
620 (state == NORMAL && strcasestr(t, "usage"))) {
621 if (usage_contains_reload(t)) {
622 supports_reload = true;
624 } else if (t[strlen(t)-1] == '\\')
625 state = USAGE_CONTINUATION;
633 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
635 s->sysv_has_lsb = true;
639 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
645 t += strspn(t, WHITESPACE);
647 if (state == NORMAL) {
649 /* Try to parse Red Hat style chkconfig headers */
651 if (startswith_no_case(t, "chkconfig:")) {
653 char runlevels[16], *k;
657 if (sscanf(t+10, "%15s %i %*i",
659 &start_priority) != 2) {
661 log_warning_unit(u->id,
662 "[%s:%u] Failed to parse chkconfig line. Ignoring.",
667 /* A start priority gathered from the
668 * symlink farms is preferred over the
669 * data from the LSB header. */
670 if (start_priority < 0 || start_priority > 99)
671 log_warning_unit(u->id,
672 "[%s:%u] Start priority out of range. Ignoring.",
675 s->sysv_start_priority = start_priority;
677 char_array_0(runlevels);
678 k = delete_chars(runlevels, WHITESPACE "-");
683 if (!(d = strdup(k))) {
688 free(s->sysv_runlevels);
689 s->sysv_runlevels = d;
692 } else if (startswith_no_case(t, "description:")) {
694 size_t k = strlen(t);
698 if (t[k-1] == '\\') {
703 if ((j = strstrip(t+12)) && *j) {
704 if (!(d = strdup(j))) {
711 free(chkconfig_description);
712 chkconfig_description = d;
714 } else if (startswith_no_case(t, "pidfile:")) {
721 if (!path_is_absolute(fn)) {
722 log_warning_unit(u->id,
723 "[%s:%u] PID file not absolute. Ignoring.",
728 if (!(fn = strdup(fn))) {
737 } else if (state == DESCRIPTION) {
739 /* Try to parse Red Hat style description
742 size_t k = strlen(t);
750 if ((j = strstrip(t)) && *j) {
753 if (chkconfig_description)
754 d = strjoin(chkconfig_description, " ", j, NULL);
763 free(chkconfig_description);
764 chkconfig_description = d;
767 } else if (state == LSB || state == LSB_DESCRIPTION) {
769 if (startswith_no_case(t, "Provides:")) {
775 FOREACH_WORD_QUOTED(w, z, t+9, i) {
778 if (!(n = strndup(w, z))) {
783 r = sysv_translate_facility(n, basename(path), &m);
792 if (unit_name_to_type(m) == UNIT_SERVICE)
793 r = unit_merge_by_name(u, m);
800 * indication that the
802 * now available. This
805 * targets do NOT pull
808 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true);
811 log_error_unit(u->id,
812 "[%s:%u] Failed to add LSB Provides name %s, ignoring: %s",
813 path, line, m, strerror(-r));
818 } else if (startswith_no_case(t, "Required-Start:") ||
819 startswith_no_case(t, "Should-Start:") ||
820 startswith_no_case(t, "X-Start-Before:") ||
821 startswith_no_case(t, "X-Start-After:")) {
827 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
830 if (!(n = strndup(w, z))) {
835 r = sysv_translate_facility(n, basename(path), &m);
837 log_error_unit(u->id,
838 "[%s:%u] Failed to translate LSB dependency %s, ignoring: %s",
839 path, line, n, strerror(-r));
849 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
852 log_error_unit(u->id, "[%s:%u] Failed to add dependency on %s, ignoring: %s",
853 path, line, m, strerror(-r));
857 } else if (startswith_no_case(t, "Default-Start:")) {
862 k = delete_chars(t+14, WHITESPACE "-");
865 if (!(d = strdup(k))) {
870 free(s->sysv_runlevels);
871 s->sysv_runlevels = d;
874 } else if (startswith_no_case(t, "Description:")) {
877 state = LSB_DESCRIPTION;
879 if ((j = strstrip(t+12)) && *j) {
880 if (!(d = strdup(j))) {
887 free(long_description);
888 long_description = d;
890 } else if (startswith_no_case(t, "Short-Description:")) {
895 if ((j = strstrip(t+18)) && *j) {
896 if (!(d = strdup(j))) {
903 free(short_description);
904 short_description = d;
906 } else if (state == LSB_DESCRIPTION) {
908 if (startswith(l, "#\t") || startswith(l, "# ")) {
911 if ((j = strstrip(t)) && *j) {
914 if (long_description)
915 d = strjoin(long_description, " ", t, NULL);
924 free(long_description);
925 long_description = d;
934 if ((r = sysv_exec_commands(s, supports_reload)) < 0)
937 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
938 /* If there a runlevels configured for this service
939 * but none of the standard ones, then we assume this
940 * is some special kind of service (which might be
941 * needed for early boot) and don't create any links
944 UNIT(s)->default_dependencies = false;
946 /* Don't timeout special services during boot (like fsck) */
947 s->timeout_start_usec = 0;
948 s->timeout_stop_usec = 0;
950 s->timeout_start_usec = DEFAULT_SYSV_TIMEOUT_USEC;
951 s->timeout_stop_usec = DEFAULT_SYSV_TIMEOUT_USEC;
954 /* Special setting for all SysV services */
955 s->type = SERVICE_FORKING;
956 s->remain_after_exit = !s->pid_file;
957 s->guess_main_pid = false;
958 s->restart = SERVICE_RESTART_NO;
959 s->exec_context.ignore_sigpipe = false;
960 s->kill_context.kill_mode = KILL_PROCESS;
962 /* We use the long description only if
963 * no short description is set. */
965 if (short_description)
966 description = short_description;
967 else if (chkconfig_description)
968 description = chkconfig_description;
969 else if (long_description)
970 description = long_description;
977 if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
985 /* The priority that has been set in /etc/rcN.d/ hierarchies
986 * takes precedence over what is stored as default in the LSB
988 if (s->sysv_start_priority_from_rcnd >= 0)
989 s->sysv_start_priority = s->sysv_start_priority_from_rcnd;
991 u->load_state = UNIT_LOADED;
999 free(short_description);
1000 free(long_description);
1001 free(chkconfig_description);
1006 static int service_load_sysv_name(Service *s, const char *name) {
1012 /* For SysV services we strip the *.sh suffixes. */
1013 if (endswith(name, ".sh.service"))
1016 STRV_FOREACH(p, UNIT(s)->manager->lookup_paths.sysvinit_path) {
1020 path = strjoin(*p, "/", name, NULL);
1024 assert(endswith(path, ".service"));
1025 path[strlen(path)-8] = 0;
1027 r = service_load_sysv_path(s, path);
1029 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
1030 /* Try *.sh source'able init scripts */
1031 strcat(path, ".sh");
1032 r = service_load_sysv_path(s, path);
1039 if (UNIT(s)->load_state != UNIT_STUB)
1046 static int service_load_sysv(Service *s) {
1053 /* Load service data from SysV init scripts, preferably with
1054 * LSB headers ... */
1056 if (strv_isempty(UNIT(s)->manager->lookup_paths.sysvinit_path))
1059 if ((t = UNIT(s)->id))
1060 if ((r = service_load_sysv_name(s, t)) < 0)
1063 if (UNIT(s)->load_state == UNIT_STUB)
1064 SET_FOREACH(t, UNIT(s)->names, i) {
1065 if (t == UNIT(s)->id)
1068 if ((r = service_load_sysv_name(s, t)) < 0)
1071 if (UNIT(s)->load_state != UNIT_STUB)
1079 static int service_verify(Service *s) {
1082 if (UNIT(s)->load_state != UNIT_LOADED)
1085 if (!s->exec_command[SERVICE_EXEC_START]) {
1086 log_error_unit(UNIT(s)->id, "%s lacks ExecStart setting. Refusing.", UNIT(s)->id);
1090 if (s->type != SERVICE_ONESHOT &&
1091 s->exec_command[SERVICE_EXEC_START]->command_next) {
1092 log_error_unit(UNIT(s)->id, "%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1096 if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) {
1097 log_error_unit(UNIT(s)->id, "%s has Restart setting other than no, which isn't allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1101 if (s->type == SERVICE_DBUS && !s->bus_name) {
1102 log_error_unit(UNIT(s)->id, "%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->id);
1106 if (s->bus_name && s->type != SERVICE_DBUS)
1107 log_warning_unit(UNIT(s)->id, "%s has a D-Bus service name specified, but is not of type dbus. Ignoring.", UNIT(s)->id);
1109 if (s->exec_context.pam_name && !(s->kill_context.kill_mode == KILL_CONTROL_GROUP || s->kill_context.kill_mode == KILL_MIXED)) {
1110 log_error_unit(UNIT(s)->id, "%s has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing.", UNIT(s)->id);
1117 static int service_add_default_dependencies(Service *s) {
1122 /* Add a number of automatic dependencies useful for the
1123 * majority of services. */
1125 /* First, pull in base system */
1126 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
1127 SPECIAL_BASIC_TARGET, NULL, true);
1131 /* Second, activate normal shutdown */
1132 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS,
1133 SPECIAL_SHUTDOWN_TARGET, NULL, true);
1137 static void service_fix_output(Service *s) {
1140 /* If nothing has been explicitly configured, patch default
1141 * output in. If input is socket/tty we avoid this however,
1142 * since in that case we want output to default to the same
1143 * place as we read input from. */
1145 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1146 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1147 s->exec_context.std_input == EXEC_INPUT_NULL)
1148 s->exec_context.std_error = UNIT(s)->manager->default_std_error;
1150 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1151 s->exec_context.std_input == EXEC_INPUT_NULL)
1152 s->exec_context.std_output = UNIT(s)->manager->default_std_output;
1155 static int service_load(Unit *u) {
1157 Service *s = SERVICE(u);
1161 /* Load a .service file */
1162 r = unit_load_fragment(u);
1166 #ifdef HAVE_SYSV_COMPAT
1167 /* Load a classic init script as a fallback, if we couldn't find anything */
1168 if (u->load_state == UNIT_STUB) {
1169 r = service_load_sysv(s);
1175 /* Still nothing found? Then let's give up */
1176 if (u->load_state == UNIT_STUB)
1179 /* This is a new unit? Then let's add in some extras */
1180 if (u->load_state == UNIT_LOADED) {
1182 /* We were able to load something, then let's add in
1183 * the dropin directories. */
1184 r = unit_load_dropin(u);
1188 if (s->type == _SERVICE_TYPE_INVALID)
1189 s->type = s->bus_name ? SERVICE_DBUS : SERVICE_SIMPLE;
1191 /* Oneshot services have disabled start timeout by default */
1192 if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined)
1193 s->timeout_start_usec = 0;
1195 service_fix_output(s);
1197 r = unit_patch_contexts(u);
1201 r = unit_add_exec_dependencies(u, &s->exec_context);
1205 r = unit_add_default_slice(u, &s->cgroup_context);
1209 #ifdef HAVE_SYSV_COMPAT
1210 r = sysv_fix_order(s);
1215 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1216 s->notify_access = NOTIFY_MAIN;
1218 if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE)
1219 s->notify_access = NOTIFY_MAIN;
1222 r = unit_watch_bus_name(u, s->bus_name);
1227 if (u->default_dependencies) {
1228 r = service_add_default_dependencies(s);
1234 return service_verify(s);
1237 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1239 ServiceExecCommand c;
1240 Service *s = SERVICE(u);
1241 const char *prefix2;
1242 _cleanup_free_ char *p2 = NULL;
1246 p2 = strappend(prefix, "\t");
1247 prefix2 = p2 ? p2 : prefix;
1250 "%sService State: %s\n"
1252 "%sReload Result: %s\n"
1253 "%sPermissionsStartOnly: %s\n"
1254 "%sRootDirectoryStartOnly: %s\n"
1255 "%sRemainAfterExit: %s\n"
1256 "%sGuessMainPID: %s\n"
1259 "%sNotifyAccess: %s\n",
1260 prefix, service_state_to_string(s->state),
1261 prefix, service_result_to_string(s->result),
1262 prefix, service_result_to_string(s->reload_result),
1263 prefix, yes_no(s->permissions_start_only),
1264 prefix, yes_no(s->root_directory_start_only),
1265 prefix, yes_no(s->remain_after_exit),
1266 prefix, yes_no(s->guess_main_pid),
1267 prefix, service_type_to_string(s->type),
1268 prefix, service_restart_to_string(s->restart),
1269 prefix, notify_access_to_string(s->notify_access));
1271 if (s->control_pid > 0)
1273 "%sControl PID: "PID_FMT"\n",
1274 prefix, s->control_pid);
1276 if (s->main_pid > 0)
1278 "%sMain PID: "PID_FMT"\n"
1279 "%sMain PID Known: %s\n"
1280 "%sMain PID Alien: %s\n",
1281 prefix, s->main_pid,
1282 prefix, yes_no(s->main_pid_known),
1283 prefix, yes_no(s->main_pid_alien));
1288 prefix, s->pid_file);
1293 "%sBus Name Good: %s\n",
1294 prefix, s->bus_name,
1295 prefix, yes_no(s->bus_name_good));
1297 kill_context_dump(&s->kill_context, f, prefix);
1298 exec_context_dump(&s->exec_context, f, prefix);
1300 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1302 if (!s->exec_command[c])
1305 fprintf(f, "%s-> %s:\n",
1306 prefix, service_exec_command_to_string(c));
1308 exec_command_dump_list(s->exec_command[c], f, prefix2);
1311 #ifdef HAVE_SYSV_COMPAT
1314 "%sSysV Init Script has LSB Header: %s\n"
1315 "%sSysVEnabled: %s\n",
1316 prefix, yes_no(s->sysv_has_lsb),
1317 prefix, yes_no(s->sysv_enabled));
1319 if (s->sysv_start_priority >= 0)
1321 "%sSysVStartPriority: %i\n",
1322 prefix, s->sysv_start_priority);
1324 if (s->sysv_runlevels)
1325 fprintf(f, "%sSysVRunLevels: %s\n",
1326 prefix, s->sysv_runlevels);
1330 fprintf(f, "%sStatus Text: %s\n",
1331 prefix, s->status_text);
1334 static int service_load_pid_file(Service *s, bool may_warn) {
1335 _cleanup_free_ char *k = NULL;
1344 r = read_one_line_file(s->pid_file, &k);
1347 log_info_unit(UNIT(s)->id,
1348 "PID file %s not readable (yet?) after %s.",
1349 s->pid_file, service_state_to_string(s->state));
1353 r = parse_pid(k, &pid);
1356 log_info_unit(UNIT(s)->id,
1357 "Failed to read PID from file %s: %s",
1358 s->pid_file, strerror(-r));
1362 if (!pid_is_alive(pid)) {
1364 log_info_unit(UNIT(s)->id, "PID "PID_FMT" read from file %s does not exist or is a zombie.", pid, s->pid_file);
1369 if (s->main_pid_known) {
1370 if (pid == s->main_pid)
1373 log_debug_unit(UNIT(s)->id,
1374 "Main PID changing: "PID_FMT" -> "PID_FMT,
1376 service_unwatch_main_pid(s);
1377 s->main_pid_known = false;
1379 log_debug_unit(UNIT(s)->id,
1380 "Main PID loaded: "PID_FMT, pid);
1382 r = service_set_main_pid(s, pid);
1386 r = unit_watch_pid(UNIT(s), pid);
1388 /* FIXME: we need to do something here */
1389 log_warning_unit(UNIT(s)->id,
1390 "Failed to watch PID "PID_FMT" from service %s",
1398 static int service_search_main_pid(Service *s) {
1404 /* If we know it anyway, don't ever fallback to unreliable
1406 if (s->main_pid_known)
1409 if (!s->guess_main_pid)
1412 assert(s->main_pid <= 0);
1414 pid = unit_search_main_pid(UNIT(s));
1418 log_debug_unit(UNIT(s)->id,
1419 "Main PID guessed: "PID_FMT, pid);
1420 r = service_set_main_pid(s, pid);
1424 r = unit_watch_pid(UNIT(s), pid);
1426 /* FIXME: we need to do something here */
1427 log_warning_unit(UNIT(s)->id,
1428 "Failed to watch PID "PID_FMT" from service %s",
1433 static void service_set_state(Service *s, ServiceState state) {
1434 ServiceState old_state;
1435 const UnitActiveState *table;
1439 table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
1441 old_state = s->state;
1444 service_unwatch_pid_file(s);
1447 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1449 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1451 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL,
1452 SERVICE_AUTO_RESTART))
1453 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1456 SERVICE_START, SERVICE_START_POST,
1457 SERVICE_RUNNING, SERVICE_RELOAD,
1458 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1460 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1461 service_unwatch_main_pid(s);
1462 s->main_command = NULL;
1466 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1468 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1470 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1471 service_unwatch_control_pid(s);
1472 s->control_command = NULL;
1473 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1476 if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART))
1477 unit_unwatch_all_pids(UNIT(s));
1480 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1481 SERVICE_RUNNING, SERVICE_RELOAD,
1482 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
1483 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) &&
1484 !(state == SERVICE_DEAD && UNIT(s)->job)) {
1485 service_close_socket_fd(s);
1486 service_connection_unref(s);
1489 if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
1490 service_stop_watchdog(s);
1492 /* For the inactive states unit_notify() will trim the cgroup,
1493 * but for exit we have to do that ourselves... */
1494 if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
1495 unit_destroy_cgroup(UNIT(s));
1497 /* For remain_after_exit services, let's see if we can "release" the
1498 * hold on the console, since unit_notify() only does that in case of
1499 * change of state */
1500 if (state == SERVICE_EXITED && s->remain_after_exit &&
1501 UNIT(s)->manager->n_on_console > 0) {
1502 ExecContext *ec = unit_get_exec_context(UNIT(s));
1503 if (ec && exec_context_may_touch_console(ec)) {
1504 Manager *m = UNIT(s)->manager;
1507 if (m->n_on_console == 0)
1508 /* unset no_console_output flag, since the console is free */
1509 m->no_console_output = false;
1513 if (old_state != state)
1514 log_debug_unit(UNIT(s)->id, "%s changed %s -> %s", UNIT(s)->id, service_state_to_string(old_state), service_state_to_string(state));
1516 unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS);
1517 s->reload_result = SERVICE_SUCCESS;
1520 static int service_coldplug(Unit *u) {
1521 Service *s = SERVICE(u);
1525 assert(s->state == SERVICE_DEAD);
1527 if (s->deserialized_state != s->state) {
1529 if (IN_SET(s->deserialized_state,
1530 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1532 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1534 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1538 k = IN_SET(s->deserialized_state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD) ? s->timeout_start_usec : s->timeout_stop_usec;
1540 /* For the start/stop timeouts 0 means off */
1542 r = service_arm_timer(s, k);
1548 if (s->deserialized_state == SERVICE_AUTO_RESTART) {
1550 /* The restart timeouts 0 means immediately */
1551 r = service_arm_timer(s, s->restart_usec);
1556 if (pid_is_unwaited(s->main_pid) &&
1557 ((s->deserialized_state == SERVICE_START && IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_ONESHOT, SERVICE_NOTIFY)) ||
1558 IN_SET(s->deserialized_state,
1559 SERVICE_START, SERVICE_START_POST,
1560 SERVICE_RUNNING, SERVICE_RELOAD,
1561 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1563 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) {
1564 r = unit_watch_pid(UNIT(s), s->main_pid);
1569 if (pid_is_unwaited(s->control_pid) &&
1570 IN_SET(s->deserialized_state,
1571 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1573 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1575 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1576 r = unit_watch_pid(UNIT(s), s->control_pid);
1581 if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART))
1582 unit_watch_all_pids(UNIT(s));
1584 if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
1585 service_start_watchdog(s);
1587 service_set_state(s, s->deserialized_state);
1593 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1597 unsigned rn_fds = 0;
1604 if (s->socket_fd >= 0)
1607 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
1612 if (u->type != UNIT_SOCKET)
1617 r = socket_collect_fds(sock, &cfds, &cn_fds);
1630 t = new(int, rn_fds+cn_fds);
1637 memcpy(t, rfds, rn_fds * sizeof(int));
1638 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1643 rn_fds = rn_fds+cn_fds;
1658 static int service_spawn(
1663 bool apply_permissions,
1665 bool apply_tty_stdin,
1666 bool set_notify_socket,
1673 _cleanup_free_ int *fdsbuf = NULL;
1674 unsigned n_fds = 0, n_env = 0;
1675 _cleanup_strv_free_ char
1676 **argv = NULL, **final_env = NULL, **our_env = NULL;
1683 unit_realize_cgroup(UNIT(s));
1685 r = unit_setup_exec_runtime(UNIT(s));
1690 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1691 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1692 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1694 if (s->socket_fd >= 0) {
1695 fds = &s->socket_fd;
1698 r = service_collect_fds(s, &fdsbuf, &n_fds);
1706 if (timeout && s->timeout_start_usec > 0) {
1707 r = service_arm_timer(s, s->timeout_start_usec);
1711 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1713 r = unit_full_printf_strv(UNIT(s), c->argv, &argv);
1717 our_env = new0(char*, 4);
1723 if (set_notify_socket)
1724 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
1729 if (s->main_pid > 0)
1730 if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) {
1735 if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM)
1736 if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid()) < 0) {
1741 final_env = strv_env_merge(2, UNIT(s)->manager->environment, our_env, NULL);
1747 if (is_control && UNIT(s)->cgroup_path) {
1748 path = strappenda(UNIT(s)->cgroup_path, "/control");
1749 cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
1751 path = UNIT(s)->cgroup_path;
1761 UNIT(s)->manager->confirm_spawn,
1762 UNIT(s)->manager->cgroup_supported,
1764 manager_get_runtime_prefix(UNIT(s)->manager),
1767 s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL,
1773 r = unit_watch_pid(UNIT(s), pid);
1775 /* FIXME: we need to do something here */
1784 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1789 static int main_pid_good(Service *s) {
1792 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1795 /* If we know the pid file, then lets just check if it is
1797 if (s->main_pid_known) {
1799 /* If it's an alien child let's check if it is still
1801 if (s->main_pid_alien && s->main_pid > 0)
1802 return pid_is_alive(s->main_pid);
1804 /* .. otherwise assume we'll get a SIGCHLD for it,
1805 * which we really should wait for to collect exit
1806 * status and code */
1807 return s->main_pid > 0;
1810 /* We don't know the pid */
1814 _pure_ static int control_pid_good(Service *s) {
1817 return s->control_pid > 0;
1820 static int cgroup_good(Service *s) {
1825 if (!UNIT(s)->cgroup_path)
1828 r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path, true);
1835 static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
1839 if (f != SERVICE_SUCCESS)
1842 service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
1844 if (allow_restart &&
1845 !s->forbid_restart &&
1846 (s->restart == SERVICE_RESTART_ALWAYS ||
1847 (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
1848 (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
1849 (s->restart == SERVICE_RESTART_ON_WATCHDOG && s->result == SERVICE_FAILURE_WATCHDOG) ||
1850 (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL ||
1851 s->result == SERVICE_FAILURE_CORE_DUMP))) &&
1852 (s->result != SERVICE_FAILURE_EXIT_CODE ||
1853 !set_contains(s->restart_ignore_status.code, INT_TO_PTR(s->main_exec_status.status))) &&
1854 (s->result != SERVICE_FAILURE_SIGNAL ||
1855 !set_contains(s->restart_ignore_status.signal, INT_TO_PTR(s->main_exec_status.status)))) {
1857 r = service_arm_timer(s, s->restart_usec);
1861 service_set_state(s, SERVICE_AUTO_RESTART);
1864 s->forbid_restart = false;
1866 /* We want fresh tmpdirs in case service is started again immediately */
1867 exec_runtime_destroy(s->exec_runtime);
1868 s->exec_runtime = exec_runtime_unref(s->exec_runtime);
1870 /* Also, remove the runtime directory in */
1871 exec_context_destroy_runtime_directory(&s->exec_context, manager_get_runtime_prefix(UNIT(s)->manager));
1873 /* Try to delete the pid file. At this point it will be
1874 * out-of-date, and some software might be confused by it, so
1875 * let's remove it. */
1877 unlink_noerrno(s->pid_file);
1882 log_warning_unit(UNIT(s)->id,
1883 "%s failed to run install restart timer: %s",
1884 UNIT(s)->id, strerror(-r));
1885 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
1888 static void service_enter_stop_post(Service *s, ServiceResult f) {
1892 if (f != SERVICE_SUCCESS)
1895 service_unwatch_control_pid(s);
1896 unit_watch_all_pids(UNIT(s));
1898 s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST];
1899 if (s->control_command) {
1900 s->control_command_id = SERVICE_EXEC_STOP_POST;
1902 r = service_spawn(s,
1906 !s->permissions_start_only,
1907 !s->root_directory_start_only,
1915 service_set_state(s, SERVICE_STOP_POST);
1917 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS);
1922 log_warning_unit(UNIT(s)->id,
1923 "%s failed to run 'stop-post' task: %s",
1924 UNIT(s)->id, strerror(-r));
1925 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
1928 static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
1933 if (f != SERVICE_SUCCESS)
1936 unit_watch_all_pids(UNIT(s));
1938 r = unit_kill_context(
1941 state != SERVICE_STOP_SIGTERM && state != SERVICE_FINAL_SIGTERM,
1950 if (s->timeout_stop_usec > 0) {
1951 r = service_arm_timer(s, s->timeout_stop_usec);
1956 service_set_state(s, state);
1957 } else if (state == SERVICE_STOP_SIGTERM)
1958 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS);
1959 else if (state == SERVICE_STOP_SIGKILL)
1960 service_enter_stop_post(s, SERVICE_SUCCESS);
1961 else if (state == SERVICE_FINAL_SIGTERM)
1962 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS);
1964 service_enter_dead(s, SERVICE_SUCCESS, true);
1969 log_warning_unit(UNIT(s)->id,
1970 "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
1972 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1973 service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
1975 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
1978 static void service_enter_stop(Service *s, ServiceResult f) {
1983 if (f != SERVICE_SUCCESS)
1986 service_unwatch_control_pid(s);
1987 unit_watch_all_pids(UNIT(s));
1989 s->control_command = s->exec_command[SERVICE_EXEC_STOP];
1990 if (s->control_command) {
1991 s->control_command_id = SERVICE_EXEC_STOP;
1993 r = service_spawn(s,
1997 !s->permissions_start_only,
1998 !s->root_directory_start_only,
2006 service_set_state(s, SERVICE_STOP);
2008 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2013 log_warning_unit(UNIT(s)->id,
2014 "%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
2015 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2018 static void service_enter_running(Service *s, ServiceResult f) {
2019 int main_pid_ok, cgroup_ok;
2022 if (f != SERVICE_SUCCESS)
2025 main_pid_ok = main_pid_good(s);
2026 cgroup_ok = cgroup_good(s);
2028 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2029 (s->bus_name_good || s->type != SERVICE_DBUS))
2030 service_set_state(s, SERVICE_RUNNING);
2031 else if (s->remain_after_exit)
2032 service_set_state(s, SERVICE_EXITED);
2034 service_enter_stop(s, SERVICE_SUCCESS);
2037 static void service_enter_start_post(Service *s) {
2041 service_unwatch_control_pid(s);
2042 service_reset_watchdog(s);
2044 s->control_command = s->exec_command[SERVICE_EXEC_START_POST];
2045 if (s->control_command) {
2046 s->control_command_id = SERVICE_EXEC_START_POST;
2048 r = service_spawn(s,
2052 !s->permissions_start_only,
2053 !s->root_directory_start_only,
2061 service_set_state(s, SERVICE_START_POST);
2063 service_enter_running(s, SERVICE_SUCCESS);
2068 log_warning_unit(UNIT(s)->id,
2069 "%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
2070 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2073 static void service_kill_control_processes(Service *s) {
2076 if (!UNIT(s)->cgroup_path)
2079 p = strappenda(UNIT(s)->cgroup_path, "/control");
2080 cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, p, SIGKILL, true, true, true, NULL);
2083 static void service_enter_start(Service *s) {
2090 assert(s->exec_command[SERVICE_EXEC_START]);
2091 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2093 service_unwatch_control_pid(s);
2094 service_unwatch_main_pid(s);
2096 /* We want to ensure that nobody leaks processes from
2097 * START_PRE here, so let's go on a killing spree, People
2098 * should not spawn long running processes from START_PRE. */
2099 service_kill_control_processes(s);
2101 if (s->type == SERVICE_FORKING) {
2102 s->control_command_id = SERVICE_EXEC_START;
2103 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2105 s->main_command = NULL;
2107 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2108 s->control_command = NULL;
2110 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2113 r = service_spawn(s,
2115 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS ||
2116 s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT,
2121 s->notify_access != NOTIFY_NONE,
2127 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) {
2128 /* For simple services we immediately start
2129 * the START_POST binaries. */
2131 service_set_main_pid(s, pid);
2132 service_enter_start_post(s);
2134 } else if (s->type == SERVICE_FORKING) {
2136 /* For forking services we wait until the start
2137 * process exited. */
2139 s->control_pid = pid;
2140 service_set_state(s, SERVICE_START);
2142 } else if (s->type == SERVICE_ONESHOT ||
2143 s->type == SERVICE_DBUS ||
2144 s->type == SERVICE_NOTIFY) {
2146 /* For oneshot services we wait until the start
2147 * process exited, too, but it is our main process. */
2149 /* For D-Bus services we know the main pid right away,
2150 * but wait for the bus name to appear on the
2151 * bus. Notify services are similar. */
2153 service_set_main_pid(s, pid);
2154 service_set_state(s, SERVICE_START);
2156 assert_not_reached("Unknown service type");
2161 log_warning_unit(UNIT(s)->id,
2162 "%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
2163 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2166 static void service_enter_start_pre(Service *s) {
2171 service_unwatch_control_pid(s);
2173 s->control_command = s->exec_command[SERVICE_EXEC_START_PRE];
2174 if (s->control_command) {
2175 /* Before we start anything, let's clear up what might
2176 * be left from previous runs. */
2177 service_kill_control_processes(s);
2179 s->control_command_id = SERVICE_EXEC_START_PRE;
2181 r = service_spawn(s,
2185 !s->permissions_start_only,
2186 !s->root_directory_start_only,
2194 service_set_state(s, SERVICE_START_PRE);
2196 service_enter_start(s);
2201 log_warning_unit(UNIT(s)->id,
2202 "%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
2203 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2206 static void service_enter_restart(Service *s) {
2207 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2212 if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) {
2213 /* Don't restart things if we are going down anyway */
2214 log_info_unit(UNIT(s)->id,
2215 "Stop job pending for unit, delaying automatic restart.");
2217 r = service_arm_timer(s, s->restart_usec);
2224 /* Any units that are bound to this service must also be
2225 * restarted. We use JOB_RESTART (instead of the more obvious
2226 * JOB_START) here so that those dependency jobs will be added
2228 r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL);
2232 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
2233 * it will be canceled as part of the service_stop() call that
2234 * is executed as part of JOB_RESTART. */
2236 log_debug_unit(UNIT(s)->id,
2237 "%s scheduled restart job.", UNIT(s)->id);
2241 log_warning_unit(UNIT(s)->id,
2242 "%s failed to schedule restart job: %s",
2243 UNIT(s)->id, bus_error_message(&error, -r));
2244 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
2247 static void service_enter_reload(Service *s) {
2252 service_unwatch_control_pid(s);
2254 s->control_command = s->exec_command[SERVICE_EXEC_RELOAD];
2255 if (s->control_command) {
2256 s->control_command_id = SERVICE_EXEC_RELOAD;
2258 r = service_spawn(s,
2262 !s->permissions_start_only,
2263 !s->root_directory_start_only,
2271 service_set_state(s, SERVICE_RELOAD);
2273 service_enter_running(s, SERVICE_SUCCESS);
2278 log_warning_unit(UNIT(s)->id,
2279 "%s failed to run 'reload' task: %s",
2280 UNIT(s)->id, strerror(-r));
2281 s->reload_result = SERVICE_FAILURE_RESOURCES;
2282 service_enter_running(s, SERVICE_SUCCESS);
2285 static void service_run_next_control(Service *s) {
2289 assert(s->control_command);
2290 assert(s->control_command->command_next);
2292 assert(s->control_command_id != SERVICE_EXEC_START);
2294 s->control_command = s->control_command->command_next;
2295 service_unwatch_control_pid(s);
2297 r = service_spawn(s,
2301 !s->permissions_start_only,
2302 !s->root_directory_start_only,
2303 s->control_command_id == SERVICE_EXEC_START_PRE ||
2304 s->control_command_id == SERVICE_EXEC_STOP_POST,
2314 log_warning_unit(UNIT(s)->id,
2315 "%s failed to run next control task: %s",
2316 UNIT(s)->id, strerror(-r));
2318 if (s->state == SERVICE_START_PRE)
2319 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2320 else if (s->state == SERVICE_STOP)
2321 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2322 else if (s->state == SERVICE_STOP_POST)
2323 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2324 else if (s->state == SERVICE_RELOAD) {
2325 s->reload_result = SERVICE_FAILURE_RESOURCES;
2326 service_enter_running(s, SERVICE_SUCCESS);
2328 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2331 static void service_run_next_main(Service *s) {
2336 assert(s->main_command);
2337 assert(s->main_command->command_next);
2338 assert(s->type == SERVICE_ONESHOT);
2340 s->main_command = s->main_command->command_next;
2341 service_unwatch_main_pid(s);
2343 r = service_spawn(s,
2350 s->notify_access != NOTIFY_NONE,
2356 service_set_main_pid(s, pid);
2361 log_warning_unit(UNIT(s)->id,
2362 "%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
2363 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2366 static int service_start_limit_test(Service *s) {
2369 if (ratelimit_test(&s->start_limit))
2372 switch (s->start_limit_action) {
2374 case SERVICE_START_LIMIT_NONE:
2375 log_warning_unit(UNIT(s)->id,
2376 "%s start request repeated too quickly, refusing to start.",
2380 case SERVICE_START_LIMIT_REBOOT: {
2381 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2384 log_warning_unit(UNIT(s)->id,
2385 "%s start request repeated too quickly, rebooting.", UNIT(s)->id);
2387 r = manager_add_job_by_name(UNIT(s)->manager, JOB_START,
2388 SPECIAL_REBOOT_TARGET, JOB_REPLACE,
2389 true, &error, NULL);
2391 log_error_unit(UNIT(s)->id,
2392 "Failed to reboot: %s.", bus_error_message(&error, r));
2397 case SERVICE_START_LIMIT_REBOOT_FORCE:
2398 log_warning_unit(UNIT(s)->id,
2399 "%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id);
2400 UNIT(s)->manager->exit_code = MANAGER_REBOOT;
2403 case SERVICE_START_LIMIT_REBOOT_IMMEDIATE:
2404 log_warning_unit(UNIT(s)->id,
2405 "%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id);
2407 reboot(RB_AUTOBOOT);
2411 log_error_unit(UNIT(s)->id,
2412 "start limit action=%i", s->start_limit_action);
2413 assert_not_reached("Unknown StartLimitAction.");
2419 static int service_start(Unit *u) {
2420 Service *s = SERVICE(u);
2425 /* We cannot fulfill this request right now, try again later
2427 if (s->state == SERVICE_STOP ||
2428 s->state == SERVICE_STOP_SIGTERM ||
2429 s->state == SERVICE_STOP_SIGKILL ||
2430 s->state == SERVICE_STOP_POST ||
2431 s->state == SERVICE_FINAL_SIGTERM ||
2432 s->state == SERVICE_FINAL_SIGKILL)
2435 /* Already on it! */
2436 if (s->state == SERVICE_START_PRE ||
2437 s->state == SERVICE_START ||
2438 s->state == SERVICE_START_POST)
2441 /* A service that will be restarted must be stopped first to
2442 * trigger BindsTo and/or OnFailure dependencies. If a user
2443 * does not want to wait for the holdoff time to elapse, the
2444 * service should be manually restarted, not started. We
2445 * simply return EAGAIN here, so that any start jobs stay
2446 * queued, and assume that the auto restart timer will
2447 * eventually trigger the restart. */
2448 if (s->state == SERVICE_AUTO_RESTART)
2451 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED);
2453 /* Make sure we don't enter a busy loop of some kind. */
2454 r = service_start_limit_test(s);
2456 service_enter_dead(s, SERVICE_FAILURE_START_LIMIT, false);
2460 s->result = SERVICE_SUCCESS;
2461 s->reload_result = SERVICE_SUCCESS;
2462 s->main_pid_known = false;
2463 s->main_pid_alien = false;
2464 s->forbid_restart = false;
2466 service_enter_start_pre(s);
2470 static int service_stop(Unit *u) {
2471 Service *s = SERVICE(u);
2475 /* Don't create restart jobs from here. */
2476 s->forbid_restart = true;
2479 if (s->state == SERVICE_STOP ||
2480 s->state == SERVICE_STOP_SIGTERM ||
2481 s->state == SERVICE_STOP_SIGKILL ||
2482 s->state == SERVICE_STOP_POST ||
2483 s->state == SERVICE_FINAL_SIGTERM ||
2484 s->state == SERVICE_FINAL_SIGKILL)
2487 /* A restart will be scheduled or is in progress. */
2488 if (s->state == SERVICE_AUTO_RESTART) {
2489 service_set_state(s, SERVICE_DEAD);
2493 /* If there's already something running we go directly into
2495 if (s->state == SERVICE_START_PRE ||
2496 s->state == SERVICE_START ||
2497 s->state == SERVICE_START_POST ||
2498 s->state == SERVICE_RELOAD) {
2499 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2503 assert(s->state == SERVICE_RUNNING ||
2504 s->state == SERVICE_EXITED);
2506 service_enter_stop(s, SERVICE_SUCCESS);
2510 static int service_reload(Unit *u) {
2511 Service *s = SERVICE(u);
2515 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2517 service_enter_reload(s);
2521 _pure_ static bool service_can_reload(Unit *u) {
2522 Service *s = SERVICE(u);
2526 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2529 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2530 Service *s = SERVICE(u);
2536 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2537 unit_serialize_item(u, f, "result", service_result_to_string(s->result));
2538 unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
2540 if (s->control_pid > 0)
2541 unit_serialize_item_format(u, f, "control-pid", PID_FMT,
2544 if (s->main_pid_known && s->main_pid > 0)
2545 unit_serialize_item_format(u, f, "main-pid", PID_FMT, s->main_pid);
2547 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2550 unit_serialize_item(u, f, "status-text", s->status_text);
2552 /* FIXME: There's a minor uncleanliness here: if there are
2553 * multiple commands attached here, we will start from the
2554 * first one again */
2555 if (s->control_command_id >= 0)
2556 unit_serialize_item(u, f, "control-command",
2557 service_exec_command_to_string(s->control_command_id));
2559 if (s->socket_fd >= 0) {
2562 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2565 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2568 if (s->main_exec_status.pid > 0) {
2569 unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT,
2570 s->main_exec_status.pid);
2571 dual_timestamp_serialize(f, "main-exec-status-start",
2572 &s->main_exec_status.start_timestamp);
2573 dual_timestamp_serialize(f, "main-exec-status-exit",
2574 &s->main_exec_status.exit_timestamp);
2576 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2577 unit_serialize_item_format(u, f, "main-exec-status-code", "%i",
2578 s->main_exec_status.code);
2579 unit_serialize_item_format(u, f, "main-exec-status-status", "%i",
2580 s->main_exec_status.status);
2583 if (dual_timestamp_is_set(&s->watchdog_timestamp))
2584 dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
2586 if (s->forbid_restart)
2587 unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart));
2592 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2593 Service *s = SERVICE(u);
2600 if (streq(key, "state")) {
2603 state = service_state_from_string(value);
2605 log_debug_unit(u->id, "Failed to parse state value %s", value);
2607 s->deserialized_state = state;
2608 } else if (streq(key, "result")) {
2611 f = service_result_from_string(value);
2613 log_debug_unit(u->id, "Failed to parse result value %s", value);
2614 else if (f != SERVICE_SUCCESS)
2617 } else if (streq(key, "reload-result")) {
2620 f = service_result_from_string(value);
2622 log_debug_unit(u->id, "Failed to parse reload result value %s", value);
2623 else if (f != SERVICE_SUCCESS)
2624 s->reload_result = f;
2626 } else if (streq(key, "control-pid")) {
2629 if (parse_pid(value, &pid) < 0)
2630 log_debug_unit(u->id, "Failed to parse control-pid value %s", value);
2632 s->control_pid = pid;
2633 } else if (streq(key, "main-pid")) {
2636 if (parse_pid(value, &pid) < 0)
2637 log_debug_unit(u->id, "Failed to parse main-pid value %s", value);
2639 service_set_main_pid(s, pid);
2640 unit_watch_pid(UNIT(s), pid);
2642 } else if (streq(key, "main-pid-known")) {
2645 b = parse_boolean(value);
2647 log_debug_unit(u->id, "Failed to parse main-pid-known value %s", value);
2649 s->main_pid_known = b;
2650 } else if (streq(key, "status-text")) {
2657 free(s->status_text);
2661 } else if (streq(key, "control-command")) {
2662 ServiceExecCommand id;
2664 id = service_exec_command_from_string(value);
2666 log_debug_unit(u->id, "Failed to parse exec-command value %s", value);
2668 s->control_command_id = id;
2669 s->control_command = s->exec_command[id];
2671 } else if (streq(key, "socket-fd")) {
2674 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2675 log_debug_unit(u->id, "Failed to parse socket-fd value %s", value);
2678 safe_close(s->socket_fd);
2679 s->socket_fd = fdset_remove(fds, fd);
2681 } else if (streq(key, "main-exec-status-pid")) {
2684 if (parse_pid(value, &pid) < 0)
2685 log_debug_unit(u->id, "Failed to parse main-exec-status-pid value %s", value);
2687 s->main_exec_status.pid = pid;
2688 } else if (streq(key, "main-exec-status-code")) {
2691 if (safe_atoi(value, &i) < 0)
2692 log_debug_unit(u->id, "Failed to parse main-exec-status-code value %s", value);
2694 s->main_exec_status.code = i;
2695 } else if (streq(key, "main-exec-status-status")) {
2698 if (safe_atoi(value, &i) < 0)
2699 log_debug_unit(u->id, "Failed to parse main-exec-status-status value %s", value);
2701 s->main_exec_status.status = i;
2702 } else if (streq(key, "main-exec-status-start"))
2703 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2704 else if (streq(key, "main-exec-status-exit"))
2705 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2706 else if (streq(key, "watchdog-timestamp"))
2707 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
2708 else if (streq(key, "forbid-restart")) {
2711 b = parse_boolean(value);
2713 log_debug_unit(u->id, "Failed to parse forbid-restart value %s", value);
2715 s->forbid_restart = b;
2717 log_debug_unit(u->id, "Unknown serialization key '%s'", key);
2722 _pure_ static UnitActiveState service_active_state(Unit *u) {
2723 const UnitActiveState *table;
2727 table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
2729 return table[SERVICE(u)->state];
2732 static const char *service_sub_state_to_string(Unit *u) {
2735 return service_state_to_string(SERVICE(u)->state);
2738 static bool service_check_gc(Unit *u) {
2739 Service *s = SERVICE(u);
2743 /* Never clean up services that still have a process around,
2744 * even if the service is formally dead. */
2745 if (cgroup_good(s) > 0 ||
2746 main_pid_good(s) > 0 ||
2747 control_pid_good(s) > 0)
2750 #ifdef HAVE_SYSV_COMPAT
2758 _pure_ static bool service_check_snapshot(Unit *u) {
2759 Service *s = SERVICE(u);
2763 return (s->socket_fd < 0);
2766 static int service_retry_pid_file(Service *s) {
2769 assert(s->pid_file);
2770 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2772 r = service_load_pid_file(s, false);
2776 service_unwatch_pid_file(s);
2778 service_enter_running(s, SERVICE_SUCCESS);
2782 static int service_watch_pid_file(Service *s) {
2785 log_debug_unit(UNIT(s)->id,
2786 "Setting watch for %s's PID file %s",
2787 UNIT(s)->id, s->pid_file_pathspec->path);
2788 r = path_spec_watch(s->pid_file_pathspec, service_dispatch_io);
2792 /* the pidfile might have appeared just before we set the watch */
2793 log_debug_unit(UNIT(s)->id,
2794 "Trying to read %s's PID file %s in case it changed",
2795 UNIT(s)->id, s->pid_file_pathspec->path);
2796 service_retry_pid_file(s);
2800 log_error_unit(UNIT(s)->id,
2801 "Failed to set a watch for %s's PID file %s: %s",
2802 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
2803 service_unwatch_pid_file(s);
2807 static int service_demand_pid_file(Service *s) {
2810 assert(s->pid_file);
2811 assert(!s->pid_file_pathspec);
2813 ps = new0(PathSpec, 1);
2818 ps->path = strdup(s->pid_file);
2824 path_kill_slashes(ps->path);
2826 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2827 * keep their PID file open all the time. */
2828 ps->type = PATH_MODIFIED;
2829 ps->inotify_fd = -1;
2831 s->pid_file_pathspec = ps;
2833 return service_watch_pid_file(s);
2836 static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata) {
2837 PathSpec *p = userdata;
2842 s = SERVICE(p->unit);
2846 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2847 assert(s->pid_file_pathspec);
2848 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2850 log_debug_unit(UNIT(s)->id, "inotify event for %s", UNIT(s)->id);
2852 if (path_spec_fd_event(p, events) < 0)
2855 if (service_retry_pid_file(s) == 0)
2858 if (service_watch_pid_file(s) < 0)
2864 service_unwatch_pid_file(s);
2865 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2869 static void service_notify_cgroup_empty_event(Unit *u) {
2870 Service *s = SERVICE(u);
2874 log_debug_unit(u->id, "%s: cgroup is empty", u->id);
2878 /* Waiting for SIGCHLD is usually more interesting,
2879 * because it includes return codes/signals. Which is
2880 * why we ignore the cgroup events for most cases,
2881 * except when we don't know pid which to expect the
2885 case SERVICE_START_POST:
2886 /* If we were hoping for the daemon to write its PID file,
2887 * we can give up now. */
2888 if (s->pid_file_pathspec) {
2889 log_warning_unit(u->id,
2890 "%s never wrote its PID file. Failing.", UNIT(s)->id);
2891 service_unwatch_pid_file(s);
2892 if (s->state == SERVICE_START)
2893 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2895 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2899 case SERVICE_RUNNING:
2900 /* service_enter_running() will figure out what to do */
2901 service_enter_running(s, SERVICE_SUCCESS);
2904 case SERVICE_STOP_SIGTERM:
2905 case SERVICE_STOP_SIGKILL:
2907 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2908 service_enter_stop_post(s, SERVICE_SUCCESS);
2912 case SERVICE_STOP_POST:
2913 case SERVICE_FINAL_SIGTERM:
2914 case SERVICE_FINAL_SIGKILL:
2915 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2916 service_enter_dead(s, SERVICE_SUCCESS, true);
2925 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2926 Service *s = SERVICE(u);
2932 if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) :
2933 is_clean_exit_lsb(code, status, &s->success_status))
2934 f = SERVICE_SUCCESS;
2935 else if (code == CLD_EXITED)
2936 f = SERVICE_FAILURE_EXIT_CODE;
2937 else if (code == CLD_KILLED)
2938 f = SERVICE_FAILURE_SIGNAL;
2939 else if (code == CLD_DUMPED)
2940 f = SERVICE_FAILURE_CORE_DUMP;
2942 assert_not_reached("Unknown code");
2944 if (s->main_pid == pid) {
2945 /* Forking services may occasionally move to a new PID.
2946 * As long as they update the PID file before exiting the old
2947 * PID, they're fine. */
2948 if (service_load_pid_file(s, false) == 0)
2952 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2954 if (s->main_command) {
2955 /* If this is not a forking service than the
2956 * main process got started and hence we copy
2957 * the exit status so that it is recorded both
2958 * as main and as control process exit
2961 s->main_command->exec_status = s->main_exec_status;
2963 if (s->main_command->ignore)
2964 f = SERVICE_SUCCESS;
2965 } else if (s->exec_command[SERVICE_EXEC_START]) {
2967 /* If this is a forked process, then we should
2968 * ignore the return value if this was
2969 * configured for the starter process */
2971 if (s->exec_command[SERVICE_EXEC_START]->ignore)
2972 f = SERVICE_SUCCESS;
2975 log_struct_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2977 "MESSAGE=%s: main process exited, code=%s, status=%i/%s",
2978 u->id, sigchld_code_to_string(code), status,
2979 strna(code == CLD_EXITED
2980 ? exit_status_to_string(status, EXIT_STATUS_FULL)
2981 : signal_to_string(status)),
2982 "EXIT_CODE=%s", sigchld_code_to_string(code),
2983 "EXIT_STATUS=%i", status,
2986 if (f != SERVICE_SUCCESS)
2989 if (s->main_command &&
2990 s->main_command->command_next &&
2991 f == SERVICE_SUCCESS) {
2993 /* There is another command to *
2994 * execute, so let's do that. */
2996 log_debug_unit(u->id,
2997 "%s running next main command for state %s",
2998 u->id, service_state_to_string(s->state));
2999 service_run_next_main(s);
3003 /* The service exited, so the service is officially
3005 s->main_command = NULL;
3009 case SERVICE_START_POST:
3010 case SERVICE_RELOAD:
3012 /* Need to wait until the operation is
3017 if (s->type == SERVICE_ONESHOT) {
3018 /* This was our main goal, so let's go on */
3019 if (f == SERVICE_SUCCESS)
3020 service_enter_start_post(s);
3022 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3028 case SERVICE_RUNNING:
3029 service_enter_running(s, f);
3032 case SERVICE_STOP_SIGTERM:
3033 case SERVICE_STOP_SIGKILL:
3035 if (!control_pid_good(s))
3036 service_enter_stop_post(s, f);
3038 /* If there is still a control process, wait for that first */
3041 case SERVICE_STOP_POST:
3042 case SERVICE_FINAL_SIGTERM:
3043 case SERVICE_FINAL_SIGKILL:
3045 if (!control_pid_good(s))
3046 service_enter_dead(s, f, true);
3050 assert_not_reached("Uh, main process died at wrong time.");
3054 } else if (s->control_pid == pid) {
3057 if (s->control_command) {
3058 exec_status_exit(&s->control_command->exec_status,
3059 &s->exec_context, pid, code, status);
3061 if (s->control_command->ignore)
3062 f = SERVICE_SUCCESS;
3065 log_full_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, u->id,
3066 "%s: control process exited, code=%s status=%i",
3067 u->id, sigchld_code_to_string(code), status);
3069 if (f != SERVICE_SUCCESS)
3072 /* Immediately get rid of the cgroup, so that the
3073 * kernel doesn't delay the cgroup empty messages for
3074 * the service cgroup any longer than necessary */
3075 service_kill_control_processes(s);
3077 if (s->control_command &&
3078 s->control_command->command_next &&
3079 f == SERVICE_SUCCESS) {
3081 /* There is another command to *
3082 * execute, so let's do that. */
3084 log_debug_unit(u->id,
3085 "%s running next control command for state %s",
3086 u->id, service_state_to_string(s->state));
3087 service_run_next_control(s);
3090 /* No further commands for this step, so let's
3091 * figure out what to do next */
3093 s->control_command = NULL;
3094 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
3096 log_debug_unit(u->id,
3097 "%s got final SIGCHLD for state %s",
3098 u->id, service_state_to_string(s->state));
3102 case SERVICE_START_PRE:
3103 if (f == SERVICE_SUCCESS)
3104 service_enter_start(s);
3106 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3110 if (s->type != SERVICE_FORKING)
3111 /* Maybe spurious event due to a reload that changed the type? */
3114 if (f != SERVICE_SUCCESS) {
3115 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3120 bool has_start_post;
3123 /* Let's try to load the pid file here if we can.
3124 * The PID file might actually be created by a START_POST
3125 * script. In that case don't worry if the loading fails. */
3127 has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
3128 r = service_load_pid_file(s, !has_start_post);
3129 if (!has_start_post && r < 0) {
3130 r = service_demand_pid_file(s);
3131 if (r < 0 || !cgroup_good(s))
3132 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3136 service_search_main_pid(s);
3138 service_enter_start_post(s);
3141 case SERVICE_START_POST:
3142 if (f != SERVICE_SUCCESS) {
3143 service_enter_stop(s, f);
3150 r = service_load_pid_file(s, true);
3152 r = service_demand_pid_file(s);
3153 if (r < 0 || !cgroup_good(s))
3154 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3158 service_search_main_pid(s);
3160 service_enter_running(s, SERVICE_SUCCESS);
3163 case SERVICE_RELOAD:
3164 if (f == SERVICE_SUCCESS) {
3165 service_load_pid_file(s, true);
3166 service_search_main_pid(s);
3169 s->reload_result = f;
3170 service_enter_running(s, SERVICE_SUCCESS);
3174 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
3177 case SERVICE_STOP_SIGTERM:
3178 case SERVICE_STOP_SIGKILL:
3179 if (main_pid_good(s) <= 0)
3180 service_enter_stop_post(s, f);
3182 /* If there is still a service
3183 * process around, wait until
3184 * that one quit, too */
3187 case SERVICE_STOP_POST:
3188 case SERVICE_FINAL_SIGTERM:
3189 case SERVICE_FINAL_SIGKILL:
3190 if (main_pid_good(s) <= 0)
3191 service_enter_dead(s, f, true);
3195 assert_not_reached("Uh, control process died at wrong time.");
3200 /* Notify clients about changed exit status */
3201 unit_add_to_dbus_queue(u);
3203 /* We got one SIGCHLD for the service, let's watch all
3204 * processes that are now running of the service, and watch
3205 * that. Among the PIDs we then watch will be children
3206 * reassigned to us, which hopefully allows us to identify
3207 * when all children are gone */
3208 unit_tidy_watch_pids(u, s->main_pid, s->control_pid);
3209 unit_watch_all_pids(u);
3211 /* If the PID set is empty now, then let's finish this off */
3212 if (set_isempty(u->pids))
3213 service_notify_cgroup_empty_event(u);
3216 static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) {
3217 Service *s = SERVICE(userdata);
3220 assert(source == s->timer_event_source);
3224 case SERVICE_START_PRE:
3226 log_warning_unit(UNIT(s)->id,
3227 "%s %s operation timed out. Terminating.",
3229 s->state == SERVICE_START ? "start" : "start-pre");
3230 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3233 case SERVICE_START_POST:
3234 log_warning_unit(UNIT(s)->id,
3235 "%s start-post operation timed out. Stopping.", UNIT(s)->id);
3236 service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
3239 case SERVICE_RELOAD:
3240 log_warning_unit(UNIT(s)->id,
3241 "%s reload operation timed out. Stopping.", UNIT(s)->id);
3242 s->reload_result = SERVICE_FAILURE_TIMEOUT;
3243 service_enter_running(s, SERVICE_SUCCESS);
3247 log_warning_unit(UNIT(s)->id,
3248 "%s stopping timed out. Terminating.", UNIT(s)->id);
3249 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3252 case SERVICE_STOP_SIGTERM:
3253 if (s->kill_context.send_sigkill) {
3254 log_warning_unit(UNIT(s)->id,
3255 "%s stop-sigterm timed out. Killing.", UNIT(s)->id);
3256 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3258 log_warning_unit(UNIT(s)->id,
3259 "%s stop-sigterm timed out. Skipping SIGKILL.", UNIT(s)->id);
3260 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3265 case SERVICE_STOP_SIGKILL:
3266 /* Uh, we sent a SIGKILL and it is still not gone?
3267 * Must be something we cannot kill, so let's just be
3268 * weirded out and continue */
3270 log_warning_unit(UNIT(s)->id,
3271 "%s still around after SIGKILL. Ignoring.", UNIT(s)->id);
3272 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3275 case SERVICE_STOP_POST:
3276 log_warning_unit(UNIT(s)->id,
3277 "%s stop-post timed out. Terminating.", UNIT(s)->id);
3278 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3281 case SERVICE_FINAL_SIGTERM:
3282 if (s->kill_context.send_sigkill) {
3283 log_warning_unit(UNIT(s)->id,
3284 "%s stop-final-sigterm timed out. Killing.", UNIT(s)->id);
3285 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3287 log_warning_unit(UNIT(s)->id,
3288 "%s stop-final-sigterm timed out. Skipping SIGKILL. Entering failed mode.",
3290 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
3295 case SERVICE_FINAL_SIGKILL:
3296 log_warning_unit(UNIT(s)->id,
3297 "%s still around after final SIGKILL. Entering failed mode.", UNIT(s)->id);
3298 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
3301 case SERVICE_AUTO_RESTART:
3302 log_info_unit(UNIT(s)->id,
3303 s->restart_usec > 0 ?
3304 "%s holdoff time over, scheduling restart." :
3305 "%s has no holdoff time, scheduling restart.",
3307 service_enter_restart(s);
3311 assert_not_reached("Timeout at wrong time.");
3317 static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) {
3318 Service *s = SERVICE(userdata);
3321 assert(source == s->watchdog_event_source);
3323 log_error_unit(UNIT(s)->id, "%s watchdog timeout!", UNIT(s)->id);
3324 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_WATCHDOG);
3329 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3330 Service *s = SERVICE(u);
3332 bool notify_dbus = false;
3336 log_debug_unit(u->id, "%s: Got notification message from PID "PID_FMT" (%s...)",
3337 u->id, pid, tags && *tags ? tags[0] : "(empty)");
3339 if (s->notify_access == NOTIFY_NONE) {
3340 log_warning_unit(u->id,
3341 "%s: Got notification message from PID "PID_FMT", but reception is disabled.",
3346 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3348 if (s->main_pid != 0)
3349 log_warning_unit(u->id, "%s: Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, u->id, pid, s->main_pid);
3351 log_debug_unit(u->id, "%s: Got notification message from PID "PID_FMT", but reception only permitted for main PID which is currently not known", u->id, pid);
3355 /* Interpret MAINPID= */
3356 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3357 (s->state == SERVICE_START ||
3358 s->state == SERVICE_START_POST ||
3359 s->state == SERVICE_RUNNING ||
3360 s->state == SERVICE_RELOAD)) {
3362 if (parse_pid(e + 8, &pid) < 0)
3363 log_warning_unit(u->id, "Failed to parse notification message %s", e);
3365 log_debug_unit(u->id, "%s: got %s", u->id, e);
3366 service_set_main_pid(s, pid);
3367 unit_watch_pid(UNIT(s), pid);
3372 /* Interpret READY= */
3373 if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START && strv_find(tags, "READY=1")) {
3374 log_debug_unit(u->id, "%s: got READY=1", u->id);
3375 service_enter_start_post(s);
3379 /* Interpret STATUS= */
3380 e = strv_find_prefix(tags, "STATUS=");
3385 if (!utf8_is_valid(e+7)) {
3386 log_warning_unit(u->id, "Status message in notification is not UTF-8 clean.");
3390 log_debug_unit(u->id, "%s: got %s", u->id, e);
3401 if (!streq_ptr(s->status_text, t)) {
3402 free(s->status_text);
3409 /* Interpret WATCHDOG= */
3410 if (strv_find(tags, "WATCHDOG=1")) {
3411 log_debug_unit(u->id, "%s: got WATCHDOG=1", u->id);
3412 service_reset_watchdog(s);
3415 /* Notify clients about changed status or main pid */
3417 unit_add_to_dbus_queue(u);
3420 static int service_get_timeout(Unit *u, uint64_t *timeout) {
3421 Service *s = SERVICE(u);
3424 if (!s->timer_event_source)
3427 r = sd_event_source_get_time(s->timer_event_source, timeout);
3434 #ifdef HAVE_SYSV_COMPAT
3436 static int service_enumerate(Manager *m) {
3439 _cleanup_closedir_ DIR *d = NULL;
3440 _cleanup_free_ char *path = NULL, *fpath = NULL, *name = NULL;
3441 Set *runlevel_services[ELEMENTSOF(rcnd_table)] = {};
3442 _cleanup_set_free_ Set *shutdown_services = NULL;
3449 if (m->running_as != SYSTEMD_SYSTEM)
3452 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3453 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3457 path = strjoin(*p, "/", rcnd_table[i].path, NULL);
3468 if (errno != ENOENT)
3469 log_warning("opendir(%s) failed: %m", path);
3474 while ((de = readdir(d))) {
3477 if (ignore_file(de->d_name))
3480 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3483 if (strlen(de->d_name) < 4)
3486 a = undecchar(de->d_name[1]);
3487 b = undecchar(de->d_name[2]);
3493 fpath = strjoin(path, "/", de->d_name, NULL);
3499 if (access(fpath, X_OK) < 0) {
3501 if (errno != ENOENT)
3502 log_warning("access() failed on %s: %m", fpath);
3508 name = sysv_translate_name(de->d_name + 3);
3514 r = manager_load_unit_prepare(m, name, NULL, NULL, &service);
3516 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3520 if (de->d_name[0] == 'S') {
3522 if (rcnd_table[i].type == RUNLEVEL_UP) {
3523 SERVICE(service)->sysv_start_priority_from_rcnd =
3524 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3526 SERVICE(service)->sysv_enabled = true;
3529 r = set_ensure_allocated(&runlevel_services[i],
3530 trivial_hash_func, trivial_compare_func);
3534 r = set_put(runlevel_services[i], service);
3538 } else if (de->d_name[0] == 'K' &&
3539 (rcnd_table[i].type == RUNLEVEL_DOWN)) {
3541 r = set_ensure_allocated(&shutdown_services,
3542 trivial_hash_func, trivial_compare_func);
3546 r = set_put(shutdown_services, service);
3553 /* Now we loaded all stubs and are aware of the lowest
3554 start-up priority for all services, not let's actually load
3555 the services, this will also tell us which services are
3556 actually native now */
3557 manager_dispatch_load_queue(m);
3559 /* If this is a native service, rely on native ways to pull in
3560 * a service, don't pull it in via sysv rcN.d links. */
3561 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3562 SET_FOREACH(service, runlevel_services[i], j) {
3563 service = unit_follow_merge(service);
3565 if (service->fragment_path)
3568 r = unit_add_two_dependencies_by_name_inverse(
3569 service, UNIT_AFTER, UNIT_WANTS,
3570 rcnd_table[i].target, NULL, true);
3575 /* We honour K links only for halt/reboot. For the normal
3576 * runlevels we assume the stop jobs will be implicitly added
3577 * by the core logic. Also, we don't really distinguish here
3578 * between the runlevels 0 and 6 and just add them to the
3579 * special shutdown target. */
3580 SET_FOREACH(service, shutdown_services, j) {
3581 service = unit_follow_merge(service);
3583 if (service->fragment_path)
3586 r = unit_add_two_dependencies_by_name(
3587 service, UNIT_BEFORE, UNIT_CONFLICTS,
3588 SPECIAL_SHUTDOWN_TARGET, NULL, true);
3597 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3598 set_free(runlevel_services[i]);
3604 static void service_bus_name_owner_change(
3607 const char *old_owner,
3608 const char *new_owner) {
3610 Service *s = SERVICE(u);
3616 assert(streq(s->bus_name, name));
3617 assert(old_owner || new_owner);
3619 if (old_owner && new_owner)
3620 log_debug_unit(u->id,
3621 "%s's D-Bus name %s changed owner from %s to %s",
3622 u->id, name, old_owner, new_owner);
3624 log_debug_unit(u->id,
3625 "%s's D-Bus name %s no longer registered by %s",
3626 u->id, name, old_owner);
3628 log_debug_unit(u->id,
3629 "%s's D-Bus name %s now registered by %s",
3630 u->id, name, new_owner);
3632 s->bus_name_good = !!new_owner;
3634 if (s->type == SERVICE_DBUS) {
3636 /* service_enter_running() will figure out what to
3638 if (s->state == SERVICE_RUNNING)
3639 service_enter_running(s, SERVICE_SUCCESS);
3640 else if (s->state == SERVICE_START && new_owner)
3641 service_enter_start_post(s);
3643 } else if (new_owner &&
3645 (s->state == SERVICE_START ||
3646 s->state == SERVICE_START_POST ||
3647 s->state == SERVICE_RUNNING ||
3648 s->state == SERVICE_RELOAD)) {
3650 _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
3653 /* Try to acquire PID from bus service */
3655 r = sd_bus_get_owner(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds);
3657 r = sd_bus_creds_get_pid(creds, &pid);
3659 log_debug_unit(u->id, "%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
3661 service_set_main_pid(s, pid);
3662 unit_watch_pid(UNIT(s), pid);
3667 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3668 _cleanup_free_ char *peer = NULL;
3674 /* This is called by the socket code when instantiating a new
3675 * service for a stream socket and the socket needs to be
3678 if (UNIT(s)->load_state != UNIT_LOADED)
3681 if (s->socket_fd >= 0)
3684 if (s->state != SERVICE_DEAD)
3687 if (getpeername_pretty(fd, &peer) >= 0) {
3689 if (UNIT(s)->description) {
3690 _cleanup_free_ char *a;
3692 a = strjoin(UNIT(s)->description, " (", peer, ")", NULL);
3696 r = unit_set_description(UNIT(s), a);
3698 r = unit_set_description(UNIT(s), peer);
3706 unit_ref_set(&s->accept_socket, UNIT(sock));
3708 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3711 static void service_reset_failed(Unit *u) {
3712 Service *s = SERVICE(u);
3716 if (s->state == SERVICE_FAILED)
3717 service_set_state(s, SERVICE_DEAD);
3719 s->result = SERVICE_SUCCESS;
3720 s->reload_result = SERVICE_SUCCESS;
3722 RATELIMIT_RESET(s->start_limit);
3725 static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) {
3726 Service *s = SERVICE(u);
3728 return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error);
3731 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3732 [SERVICE_DEAD] = "dead",
3733 [SERVICE_START_PRE] = "start-pre",
3734 [SERVICE_START] = "start",
3735 [SERVICE_START_POST] = "start-post",
3736 [SERVICE_RUNNING] = "running",
3737 [SERVICE_EXITED] = "exited",
3738 [SERVICE_RELOAD] = "reload",
3739 [SERVICE_STOP] = "stop",
3740 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3741 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3742 [SERVICE_STOP_POST] = "stop-post",
3743 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3744 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3745 [SERVICE_FAILED] = "failed",
3746 [SERVICE_AUTO_RESTART] = "auto-restart",
3749 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3751 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3752 [SERVICE_RESTART_NO] = "no",
3753 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3754 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3755 [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog",
3756 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3757 [SERVICE_RESTART_ALWAYS] = "always"
3760 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3762 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3763 [SERVICE_SIMPLE] = "simple",
3764 [SERVICE_FORKING] = "forking",
3765 [SERVICE_ONESHOT] = "oneshot",
3766 [SERVICE_DBUS] = "dbus",
3767 [SERVICE_NOTIFY] = "notify",
3768 [SERVICE_IDLE] = "idle"
3771 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3773 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3774 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3775 [SERVICE_EXEC_START] = "ExecStart",
3776 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3777 [SERVICE_EXEC_RELOAD] = "ExecReload",
3778 [SERVICE_EXEC_STOP] = "ExecStop",
3779 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3782 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3784 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3785 [NOTIFY_NONE] = "none",
3786 [NOTIFY_MAIN] = "main",
3787 [NOTIFY_ALL] = "all"
3790 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3792 static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
3793 [SERVICE_SUCCESS] = "success",
3794 [SERVICE_FAILURE_RESOURCES] = "resources",
3795 [SERVICE_FAILURE_TIMEOUT] = "timeout",
3796 [SERVICE_FAILURE_EXIT_CODE] = "exit-code",
3797 [SERVICE_FAILURE_SIGNAL] = "signal",
3798 [SERVICE_FAILURE_CORE_DUMP] = "core-dump",
3799 [SERVICE_FAILURE_WATCHDOG] = "watchdog",
3800 [SERVICE_FAILURE_START_LIMIT] = "start-limit"
3803 DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
3805 static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = {
3806 [SERVICE_START_LIMIT_NONE] = "none",
3807 [SERVICE_START_LIMIT_REBOOT] = "reboot",
3808 [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force",
3809 [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate"
3811 DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction);
3813 const UnitVTable service_vtable = {
3814 .object_size = sizeof(Service),
3815 .exec_context_offset = offsetof(Service, exec_context),
3816 .cgroup_context_offset = offsetof(Service, cgroup_context),
3817 .kill_context_offset = offsetof(Service, kill_context),
3818 .exec_runtime_offset = offsetof(Service, exec_runtime),
3824 .private_section = "Service",
3826 .init = service_init,
3827 .done = service_done,
3828 .load = service_load,
3830 .coldplug = service_coldplug,
3832 .dump = service_dump,
3834 .start = service_start,
3835 .stop = service_stop,
3836 .reload = service_reload,
3838 .can_reload = service_can_reload,
3840 .kill = service_kill,
3842 .serialize = service_serialize,
3843 .deserialize_item = service_deserialize_item,
3845 .active_state = service_active_state,
3846 .sub_state_to_string = service_sub_state_to_string,
3848 .check_gc = service_check_gc,
3849 .check_snapshot = service_check_snapshot,
3851 .sigchld_event = service_sigchld_event,
3853 .reset_failed = service_reset_failed,
3855 .notify_cgroup_empty = service_notify_cgroup_empty_event,
3856 .notify_message = service_notify_message,
3858 .bus_name_owner_change = service_bus_name_owner_change,
3860 .bus_interface = "org.freedesktop.systemd1.Service",
3861 .bus_vtable = bus_service_vtable,
3862 .bus_set_property = bus_service_set_property,
3863 .bus_commit_properties = bus_service_commit_properties,
3865 .get_timeout = service_get_timeout,
3867 #ifdef HAVE_SYSV_COMPAT
3868 .enumerate = service_enumerate,
3871 .can_transient = true,
3873 .status_message_formats = {
3874 .starting_stopping = {
3875 [0] = "Starting %s...",
3876 [1] = "Stopping %s...",
3878 .finished_start_job = {
3879 [JOB_DONE] = "Started %s.",
3880 [JOB_FAILED] = "Failed to start %s.",
3881 [JOB_DEPENDENCY] = "Dependency failed for %s.",
3882 [JOB_TIMEOUT] = "Timed out starting %s.",
3884 .finished_stop_job = {
3885 [JOB_DONE] = "Stopped %s.",
3886 [JOB_FAILED] = "Stopped (with error) %s.",
3887 [JOB_TIMEOUT] = "Timed out stopping %s.",