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 exec_context_init(&s->exec_context);
147 kill_context_init(&s->kill_context);
148 cgroup_context_init(&s->cgroup_context);
150 unit_cgroup_context_init_defaults(u, &s->cgroup_context);
152 RATELIMIT_INIT(s->start_limit, u->manager->default_start_limit_interval, u->manager->default_start_limit_burst);
154 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
157 static void service_unwatch_control_pid(Service *s) {
160 if (s->control_pid <= 0)
163 unit_unwatch_pid(UNIT(s), s->control_pid);
167 static void service_unwatch_main_pid(Service *s) {
170 if (s->main_pid <= 0)
173 unit_unwatch_pid(UNIT(s), s->main_pid);
177 static void service_unwatch_pid_file(Service *s) {
178 if (!s->pid_file_pathspec)
181 log_debug_unit(UNIT(s)->id, "Stopping watch for %s's PID file %s",
182 UNIT(s)->id, s->pid_file_pathspec->path);
183 path_spec_unwatch(s->pid_file_pathspec);
184 path_spec_done(s->pid_file_pathspec);
185 free(s->pid_file_pathspec);
186 s->pid_file_pathspec = NULL;
189 static int service_set_main_pid(Service *s, pid_t pid) {
200 if (s->main_pid == pid && s->main_pid_known)
203 if (s->main_pid != pid) {
204 service_unwatch_main_pid(s);
205 exec_status_start(&s->main_exec_status, pid);
209 s->main_pid_known = true;
211 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) {
212 log_warning_unit(UNIT(s)->id,
213 "%s: Supervising process "PID_FMT" which is not our child. We'll most likely not notice when it exits.",
216 s->main_pid_alien = true;
218 s->main_pid_alien = false;
223 static void service_close_socket_fd(Service *s) {
226 if (s->socket_fd < 0)
229 close_nointr_nofail(s->socket_fd);
233 static void service_connection_unref(Service *s) {
236 if (!UNIT_ISSET(s->accept_socket))
239 socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
240 unit_ref_unset(&s->accept_socket);
243 static void service_stop_watchdog(Service *s) {
246 s->watchdog_event_source = sd_event_source_unref(s->watchdog_event_source);
247 s->watchdog_timestamp = DUAL_TIMESTAMP_NULL;
250 static void service_start_watchdog(Service *s) {
255 if (s->watchdog_usec <= 0)
258 if (s->watchdog_event_source) {
259 r = sd_event_source_set_time(s->watchdog_event_source, s->watchdog_timestamp.monotonic + s->watchdog_usec);
261 log_warning_unit(UNIT(s)->id, "%s failed to reset watchdog timer: %s", UNIT(s)->id, strerror(-r));
265 r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT);
267 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);
269 log_warning_unit(UNIT(s)->id, "%s failed to add watchdog timer: %s", UNIT(s)->id, strerror(-r));
273 /* Let's process everything else which might be a sign
274 * of living before we consider a service died. */
275 r = sd_event_source_set_priority(s->watchdog_event_source, SD_EVENT_PRIORITY_IDLE);
279 log_warning_unit(UNIT(s)->id, "%s failed to install watchdog timer: %s", UNIT(s)->id, strerror(-r));
282 static void service_reset_watchdog(Service *s) {
285 dual_timestamp_get(&s->watchdog_timestamp);
286 service_start_watchdog(s);
289 static void service_done(Unit *u) {
290 Service *s = SERVICE(u);
297 #ifdef HAVE_SYSV_COMPAT
298 free(s->sysv_runlevels);
299 s->sysv_runlevels = NULL;
302 free(s->status_text);
303 s->status_text = NULL;
305 cgroup_context_done(&s->cgroup_context);
306 exec_context_done(&s->exec_context);
307 s->exec_runtime = exec_runtime_unref(s->exec_runtime);
308 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
309 s->control_command = NULL;
310 s->main_command = NULL;
312 set_free(s->restart_ignore_status.code);
313 s->restart_ignore_status.code = NULL;
314 set_free(s->restart_ignore_status.signal);
315 s->restart_ignore_status.signal = NULL;
317 set_free(s->success_status.code);
318 s->success_status.code = NULL;
319 set_free(s->success_status.signal);
320 s->success_status.signal = NULL;
322 /* This will leak a process, but at least no memory or any of
324 service_unwatch_main_pid(s);
325 service_unwatch_control_pid(s);
326 service_unwatch_pid_file(s);
329 unit_unwatch_bus_name(u, s->bus_name);
334 service_close_socket_fd(s);
335 service_connection_unref(s);
337 unit_ref_unset(&s->accept_socket);
339 service_stop_watchdog(s);
341 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
344 static int service_arm_timer(Service *s, usec_t usec) {
349 if (s->timer_event_source) {
350 r = sd_event_source_set_time(s->timer_event_source, now(CLOCK_MONOTONIC) + usec);
354 return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT);
357 return sd_event_add_monotonic(UNIT(s)->manager->event, &s->timer_event_source, now(CLOCK_MONOTONIC) + usec, 0, service_dispatch_timer, s);
360 #ifdef HAVE_SYSV_COMPAT
361 static char *sysv_translate_name(const char *name) {
364 r = new(char, strlen(name) + sizeof(".service"));
368 if (endswith(name, ".sh"))
369 /* Drop .sh suffix */
370 strcpy(stpcpy(r, name) - 3, ".service");
372 /* Normal init script name */
373 strcpy(stpcpy(r, name), ".service");
378 static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
380 /* We silently ignore the $ prefix here. According to the LSB
381 * spec it simply indicates whether something is a
382 * standardized name or a distribution-specific one. Since we
383 * just follow what already exists and do not introduce new
384 * uses or names we don't care who introduced a new name. */
386 static const char * const table[] = {
387 /* LSB defined facilities */
389 "network", SPECIAL_NETWORK_TARGET,
390 "named", SPECIAL_NSS_LOOKUP_TARGET,
391 "portmap", SPECIAL_RPCBIND_TARGET,
392 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
394 "time", SPECIAL_TIME_SYNC_TARGET,
404 n = *name == '$' ? name + 1 : name;
406 for (i = 0; i < ELEMENTSOF(table); i += 2) {
408 if (!streq(table[i], n))
414 r = strdup(table[i+1]);
421 /* If we don't know this name, fallback heuristics to figure
422 * out whether something is a target or a service alias. */
425 if (!unit_prefix_is_valid(n))
428 /* Facilities starting with $ are most likely targets */
429 r = unit_name_build(n, NULL, ".target");
430 } else if (filename && streq(name, filename))
431 /* Names equaling the file name of the services are redundant */
434 /* Everything else we assume to be normal service names */
435 r = sysv_translate_name(n);
446 static int sysv_fix_order(Service *s) {
452 if (s->sysv_start_priority < 0)
455 /* For each pair of services where at least one lacks a LSB
456 * header, we use the start priority value to order things. */
458 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
461 bool special_s, special_t;
468 if (UNIT(t)->load_state != UNIT_LOADED)
471 if (t->sysv_start_priority < 0)
474 /* If both units have modern headers we don't care
475 * about the priorities */
476 if ((UNIT(s)->fragment_path || s->sysv_has_lsb) &&
477 (UNIT(t)->fragment_path || t->sysv_has_lsb))
480 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
481 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
483 if (special_t && !special_s)
485 else if (special_s && !special_t)
487 else if (t->sysv_start_priority < s->sysv_start_priority)
489 else if (t->sysv_start_priority > s->sysv_start_priority)
494 /* FIXME: Maybe we should compare the name here lexicographically? */
496 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
503 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
506 if (!(c = new0(ExecCommand, 1)))
509 if (!(c->path = strdup(path))) {
514 if (!(c->argv = strv_new(path, arg1, NULL))) {
523 static int sysv_exec_commands(Service *s, const bool supports_reload) {
528 assert(UNIT(s)->source_path);
530 c = exec_command_new(UNIT(s)->source_path, "start");
533 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
535 c = exec_command_new(UNIT(s)->source_path, "stop");
538 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
540 if (supports_reload) {
541 c = exec_command_new(UNIT(s)->source_path, "reload");
544 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
550 static bool usage_contains_reload(const char *line) {
551 return (strcasestr(line, "{reload|") ||
552 strcasestr(line, "{reload}") ||
553 strcasestr(line, "{reload\"") ||
554 strcasestr(line, "|reload|") ||
555 strcasestr(line, "|reload}") ||
556 strcasestr(line, "|reload\""));
559 static int service_load_sysv_path(Service *s, const char *path) {
571 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
573 bool supports_reload = false;
580 f = fopen(path, "re");
582 r = errno == ENOENT ? 0 : -errno;
586 if (fstat(fileno(f), &st) < 0) {
591 free(u->source_path);
592 u->source_path = strdup(path);
593 if (!u->source_path) {
597 u->source_mtime = timespec_load(&st.st_mtim);
599 if (null_or_empty(&st)) {
600 u->load_state = UNIT_MASKED;
608 char l[LINE_MAX], *t;
610 if (!fgets(l, sizeof(l), f)) {
615 log_error_unit(u->id,
616 "Failed to read configuration file '%s': %s",
625 /* Try to figure out whether this init script supports
626 * the reload operation. This heuristic looks for
627 * "Usage" lines which include the reload option. */
628 if ( state == USAGE_CONTINUATION ||
629 (state == NORMAL && strcasestr(t, "usage"))) {
630 if (usage_contains_reload(t)) {
631 supports_reload = true;
633 } else if (t[strlen(t)-1] == '\\')
634 state = USAGE_CONTINUATION;
642 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
644 s->sysv_has_lsb = true;
648 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
654 t += strspn(t, WHITESPACE);
656 if (state == NORMAL) {
658 /* Try to parse Red Hat style chkconfig headers */
660 if (startswith_no_case(t, "chkconfig:")) {
662 char runlevels[16], *k;
666 if (sscanf(t+10, "%15s %i %*i",
668 &start_priority) != 2) {
670 log_warning_unit(u->id,
671 "[%s:%u] Failed to parse chkconfig line. Ignoring.",
676 /* A start priority gathered from the
677 * symlink farms is preferred over the
678 * data from the LSB header. */
679 if (start_priority < 0 || start_priority > 99)
680 log_warning_unit(u->id,
681 "[%s:%u] Start priority out of range. Ignoring.",
684 s->sysv_start_priority = start_priority;
686 char_array_0(runlevels);
687 k = delete_chars(runlevels, WHITESPACE "-");
692 if (!(d = strdup(k))) {
697 free(s->sysv_runlevels);
698 s->sysv_runlevels = d;
701 } else if (startswith_no_case(t, "description:")) {
703 size_t k = strlen(t);
707 if (t[k-1] == '\\') {
712 if ((j = strstrip(t+12)) && *j) {
713 if (!(d = strdup(j))) {
720 free(chkconfig_description);
721 chkconfig_description = d;
723 } else if (startswith_no_case(t, "pidfile:")) {
730 if (!path_is_absolute(fn)) {
731 log_warning_unit(u->id,
732 "[%s:%u] PID file not absolute. Ignoring.",
737 if (!(fn = strdup(fn))) {
746 } else if (state == DESCRIPTION) {
748 /* Try to parse Red Hat style description
751 size_t k = strlen(t);
759 if ((j = strstrip(t)) && *j) {
762 if (chkconfig_description)
763 d = strjoin(chkconfig_description, " ", j, NULL);
772 free(chkconfig_description);
773 chkconfig_description = d;
776 } else if (state == LSB || state == LSB_DESCRIPTION) {
778 if (startswith_no_case(t, "Provides:")) {
784 FOREACH_WORD_QUOTED(w, z, t+9, i) {
787 if (!(n = strndup(w, z))) {
792 r = sysv_translate_facility(n, basename(path), &m);
801 if (unit_name_to_type(m) == UNIT_SERVICE)
802 r = unit_merge_by_name(u, m);
809 * indication that the
811 * now available. This
814 * targets do NOT pull
817 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true);
820 log_error_unit(u->id,
821 "[%s:%u] Failed to add LSB Provides name %s, ignoring: %s",
822 path, line, m, strerror(-r));
827 } else if (startswith_no_case(t, "Required-Start:") ||
828 startswith_no_case(t, "Should-Start:") ||
829 startswith_no_case(t, "X-Start-Before:") ||
830 startswith_no_case(t, "X-Start-After:")) {
836 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
839 if (!(n = strndup(w, z))) {
844 r = sysv_translate_facility(n, basename(path), &m);
846 log_error_unit(u->id,
847 "[%s:%u] Failed to translate LSB dependency %s, ignoring: %s",
848 path, line, n, strerror(-r));
858 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
861 log_error_unit(u->id, "[%s:%u] Failed to add dependency on %s, ignoring: %s",
862 path, line, m, strerror(-r));
866 } else if (startswith_no_case(t, "Default-Start:")) {
871 k = delete_chars(t+14, WHITESPACE "-");
874 if (!(d = strdup(k))) {
879 free(s->sysv_runlevels);
880 s->sysv_runlevels = d;
883 } else if (startswith_no_case(t, "Description:")) {
886 state = LSB_DESCRIPTION;
888 if ((j = strstrip(t+12)) && *j) {
889 if (!(d = strdup(j))) {
896 free(long_description);
897 long_description = d;
899 } else if (startswith_no_case(t, "Short-Description:")) {
904 if ((j = strstrip(t+18)) && *j) {
905 if (!(d = strdup(j))) {
912 free(short_description);
913 short_description = d;
915 } else if (state == LSB_DESCRIPTION) {
917 if (startswith(l, "#\t") || startswith(l, "# ")) {
920 if ((j = strstrip(t)) && *j) {
923 if (long_description)
924 d = strjoin(long_description, " ", t, NULL);
933 free(long_description);
934 long_description = d;
943 if ((r = sysv_exec_commands(s, supports_reload)) < 0)
946 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
947 /* If there a runlevels configured for this service
948 * but none of the standard ones, then we assume this
949 * is some special kind of service (which might be
950 * needed for early boot) and don't create any links
953 UNIT(s)->default_dependencies = false;
955 /* Don't timeout special services during boot (like fsck) */
956 s->timeout_start_usec = 0;
957 s->timeout_stop_usec = 0;
959 s->timeout_start_usec = DEFAULT_SYSV_TIMEOUT_USEC;
960 s->timeout_stop_usec = DEFAULT_SYSV_TIMEOUT_USEC;
963 /* Special setting for all SysV services */
964 s->type = SERVICE_FORKING;
965 s->remain_after_exit = !s->pid_file;
966 s->guess_main_pid = false;
967 s->restart = SERVICE_RESTART_NO;
968 s->exec_context.ignore_sigpipe = false;
969 s->kill_context.kill_mode = KILL_PROCESS;
971 /* We use the long description only if
972 * no short description is set. */
974 if (short_description)
975 description = short_description;
976 else if (chkconfig_description)
977 description = chkconfig_description;
978 else if (long_description)
979 description = long_description;
986 if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
994 /* The priority that has been set in /etc/rcN.d/ hierarchies
995 * takes precedence over what is stored as default in the LSB
997 if (s->sysv_start_priority_from_rcnd >= 0)
998 s->sysv_start_priority = s->sysv_start_priority_from_rcnd;
1000 u->load_state = UNIT_LOADED;
1008 free(short_description);
1009 free(long_description);
1010 free(chkconfig_description);
1015 static int service_load_sysv_name(Service *s, const char *name) {
1021 /* For SysV services we strip the *.sh suffixes. */
1022 if (endswith(name, ".sh.service"))
1025 STRV_FOREACH(p, UNIT(s)->manager->lookup_paths.sysvinit_path) {
1029 path = strjoin(*p, "/", name, NULL);
1033 assert(endswith(path, ".service"));
1034 path[strlen(path)-8] = 0;
1036 r = service_load_sysv_path(s, path);
1038 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
1039 /* Try *.sh source'able init scripts */
1040 strcat(path, ".sh");
1041 r = service_load_sysv_path(s, path);
1048 if (UNIT(s)->load_state != UNIT_STUB)
1055 static int service_load_sysv(Service *s) {
1062 /* Load service data from SysV init scripts, preferably with
1063 * LSB headers ... */
1065 if (strv_isempty(UNIT(s)->manager->lookup_paths.sysvinit_path))
1068 if ((t = UNIT(s)->id))
1069 if ((r = service_load_sysv_name(s, t)) < 0)
1072 if (UNIT(s)->load_state == UNIT_STUB)
1073 SET_FOREACH(t, UNIT(s)->names, i) {
1074 if (t == UNIT(s)->id)
1077 if ((r = service_load_sysv_name(s, t)) < 0)
1080 if (UNIT(s)->load_state != UNIT_STUB)
1088 static int service_verify(Service *s) {
1091 if (UNIT(s)->load_state != UNIT_LOADED)
1094 if (!s->exec_command[SERVICE_EXEC_START]) {
1095 log_error_unit(UNIT(s)->id, "%s lacks ExecStart setting. Refusing.", UNIT(s)->id);
1099 if (s->type != SERVICE_ONESHOT &&
1100 s->exec_command[SERVICE_EXEC_START]->command_next) {
1101 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);
1105 if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) {
1106 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);
1110 if (s->type == SERVICE_DBUS && !s->bus_name) {
1111 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);
1115 if (s->bus_name && s->type != SERVICE_DBUS)
1116 log_warning_unit(UNIT(s)->id, "%s has a D-Bus service name specified, but is not of type dbus. Ignoring.", UNIT(s)->id);
1118 if (s->exec_context.pam_name && !(s->kill_context.kill_mode == KILL_CONTROL_GROUP || s->kill_context.kill_mode == KILL_MIXED)) {
1119 log_error_unit(UNIT(s)->id, "%s has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing.", UNIT(s)->id);
1126 static int service_add_default_dependencies(Service *s) {
1131 /* Add a number of automatic dependencies useful for the
1132 * majority of services. */
1134 /* First, pull in base system */
1135 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
1136 SPECIAL_BASIC_TARGET, NULL, true);
1140 /* Second, activate normal shutdown */
1141 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS,
1142 SPECIAL_SHUTDOWN_TARGET, NULL, true);
1146 static void service_fix_output(Service *s) {
1149 /* If nothing has been explicitly configured, patch default
1150 * output in. If input is socket/tty we avoid this however,
1151 * since in that case we want output to default to the same
1152 * place as we read input from. */
1154 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1155 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1156 s->exec_context.std_input == EXEC_INPUT_NULL)
1157 s->exec_context.std_error = UNIT(s)->manager->default_std_error;
1159 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1160 s->exec_context.std_input == EXEC_INPUT_NULL)
1161 s->exec_context.std_output = UNIT(s)->manager->default_std_output;
1164 static int service_load(Unit *u) {
1166 Service *s = SERVICE(u);
1170 /* Load a .service file */
1171 r = unit_load_fragment(u);
1175 #ifdef HAVE_SYSV_COMPAT
1176 /* Load a classic init script as a fallback, if we couldn't find anything */
1177 if (u->load_state == UNIT_STUB) {
1178 r = service_load_sysv(s);
1184 /* Still nothing found? Then let's give up */
1185 if (u->load_state == UNIT_STUB)
1188 /* This is a new unit? Then let's add in some extras */
1189 if (u->load_state == UNIT_LOADED) {
1191 /* We were able to load something, then let's add in
1192 * the dropin directories. */
1193 r = unit_load_dropin(u);
1197 if (s->type == _SERVICE_TYPE_INVALID)
1198 s->type = s->bus_name ? SERVICE_DBUS : SERVICE_SIMPLE;
1200 /* Oneshot services have disabled start timeout by default */
1201 if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined)
1202 s->timeout_start_usec = 0;
1204 service_fix_output(s);
1206 r = unit_add_exec_dependencies(u, &s->exec_context);
1210 r = unit_add_default_slice(u);
1214 #ifdef HAVE_SYSV_COMPAT
1215 r = sysv_fix_order(s);
1221 r = unit_watch_bus_name(u, s->bus_name);
1226 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1227 s->notify_access = NOTIFY_MAIN;
1229 if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE)
1230 s->notify_access = NOTIFY_MAIN;
1232 if (UNIT(s)->default_dependencies) {
1233 r = service_add_default_dependencies(s);
1238 r = unit_exec_context_patch_defaults(u, &s->exec_context);
1243 return service_verify(s);
1246 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1248 ServiceExecCommand c;
1249 Service *s = SERVICE(u);
1250 const char *prefix2;
1251 _cleanup_free_ char *p2 = NULL;
1255 p2 = strappend(prefix, "\t");
1256 prefix2 = p2 ? p2 : prefix;
1259 "%sService State: %s\n"
1261 "%sReload Result: %s\n"
1262 "%sPermissionsStartOnly: %s\n"
1263 "%sRootDirectoryStartOnly: %s\n"
1264 "%sRemainAfterExit: %s\n"
1265 "%sGuessMainPID: %s\n"
1268 "%sNotifyAccess: %s\n",
1269 prefix, service_state_to_string(s->state),
1270 prefix, service_result_to_string(s->result),
1271 prefix, service_result_to_string(s->reload_result),
1272 prefix, yes_no(s->permissions_start_only),
1273 prefix, yes_no(s->root_directory_start_only),
1274 prefix, yes_no(s->remain_after_exit),
1275 prefix, yes_no(s->guess_main_pid),
1276 prefix, service_type_to_string(s->type),
1277 prefix, service_restart_to_string(s->restart),
1278 prefix, notify_access_to_string(s->notify_access));
1280 if (s->control_pid > 0)
1282 "%sControl PID: "PID_FMT"\n",
1283 prefix, s->control_pid);
1285 if (s->main_pid > 0)
1287 "%sMain PID: "PID_FMT"\n"
1288 "%sMain PID Known: %s\n"
1289 "%sMain PID Alien: %s\n",
1290 prefix, s->main_pid,
1291 prefix, yes_no(s->main_pid_known),
1292 prefix, yes_no(s->main_pid_alien));
1297 prefix, s->pid_file);
1302 "%sBus Name Good: %s\n",
1303 prefix, s->bus_name,
1304 prefix, yes_no(s->bus_name_good));
1306 kill_context_dump(&s->kill_context, f, prefix);
1307 exec_context_dump(&s->exec_context, f, prefix);
1309 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1311 if (!s->exec_command[c])
1314 fprintf(f, "%s-> %s:\n",
1315 prefix, service_exec_command_to_string(c));
1317 exec_command_dump_list(s->exec_command[c], f, prefix2);
1320 #ifdef HAVE_SYSV_COMPAT
1323 "%sSysV Init Script has LSB Header: %s\n"
1324 "%sSysVEnabled: %s\n",
1325 prefix, yes_no(s->sysv_has_lsb),
1326 prefix, yes_no(s->sysv_enabled));
1328 if (s->sysv_start_priority >= 0)
1330 "%sSysVStartPriority: %i\n",
1331 prefix, s->sysv_start_priority);
1333 if (s->sysv_runlevels)
1334 fprintf(f, "%sSysVRunLevels: %s\n",
1335 prefix, s->sysv_runlevels);
1339 fprintf(f, "%sStatus Text: %s\n",
1340 prefix, s->status_text);
1343 static int service_load_pid_file(Service *s, bool may_warn) {
1344 _cleanup_free_ char *k = NULL;
1353 r = read_one_line_file(s->pid_file, &k);
1356 log_info_unit(UNIT(s)->id,
1357 "PID file %s not readable (yet?) after %s.",
1358 s->pid_file, service_state_to_string(s->state));
1362 r = parse_pid(k, &pid);
1365 log_info_unit(UNIT(s)->id,
1366 "Failed to read PID from file %s: %s",
1367 s->pid_file, strerror(-r));
1371 if (!pid_is_alive(pid)) {
1373 log_info_unit(UNIT(s)->id, "PID "PID_FMT" read from file %s does not exist or is a zombie.", pid, s->pid_file);
1378 if (s->main_pid_known) {
1379 if (pid == s->main_pid)
1382 log_debug_unit(UNIT(s)->id,
1383 "Main PID changing: "PID_FMT" -> "PID_FMT,
1385 service_unwatch_main_pid(s);
1386 s->main_pid_known = false;
1388 log_debug_unit(UNIT(s)->id,
1389 "Main PID loaded: "PID_FMT, pid);
1391 r = service_set_main_pid(s, pid);
1395 r = unit_watch_pid(UNIT(s), pid);
1397 /* FIXME: we need to do something here */
1398 log_warning_unit(UNIT(s)->id,
1399 "Failed to watch PID "PID_FMT" from service %s",
1407 static int service_search_main_pid(Service *s) {
1413 /* If we know it anyway, don't ever fallback to unreliable
1415 if (s->main_pid_known)
1418 if (!s->guess_main_pid)
1421 assert(s->main_pid <= 0);
1423 pid = unit_search_main_pid(UNIT(s));
1427 log_debug_unit(UNIT(s)->id,
1428 "Main PID guessed: "PID_FMT, pid);
1429 r = service_set_main_pid(s, pid);
1433 r = unit_watch_pid(UNIT(s), pid);
1435 /* FIXME: we need to do something here */
1436 log_warning_unit(UNIT(s)->id,
1437 "Failed to watch PID "PID_FMT" from service %s",
1442 static void service_set_state(Service *s, ServiceState state) {
1443 ServiceState old_state;
1444 const UnitActiveState *table;
1448 table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
1450 old_state = s->state;
1453 service_unwatch_pid_file(s);
1456 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1458 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1460 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL,
1461 SERVICE_AUTO_RESTART))
1462 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1465 SERVICE_START, SERVICE_START_POST,
1466 SERVICE_RUNNING, SERVICE_RELOAD,
1467 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1469 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1470 service_unwatch_main_pid(s);
1471 s->main_command = NULL;
1475 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1477 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1479 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1480 service_unwatch_control_pid(s);
1481 s->control_command = NULL;
1482 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1485 if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART))
1486 unit_unwatch_all_pids(UNIT(s));
1489 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1490 SERVICE_RUNNING, SERVICE_RELOAD,
1491 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
1492 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) &&
1493 !(state == SERVICE_DEAD && UNIT(s)->job)) {
1494 service_close_socket_fd(s);
1495 service_connection_unref(s);
1498 if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
1499 service_stop_watchdog(s);
1501 /* For the inactive states unit_notify() will trim the cgroup,
1502 * but for exit we have to do that ourselves... */
1503 if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
1504 unit_destroy_cgroup(UNIT(s));
1506 /* For remain_after_exit services, let's see if we can "release" the
1507 * hold on the console, since unit_notify() only does that in case of
1508 * change of state */
1509 if (state == SERVICE_EXITED && s->remain_after_exit &&
1510 UNIT(s)->manager->n_on_console > 0) {
1511 ExecContext *ec = unit_get_exec_context(UNIT(s));
1512 if (ec && exec_context_may_touch_console(ec)) {
1513 Manager *m = UNIT(s)->manager;
1516 if (m->n_on_console == 0)
1517 /* unset no_console_output flag, since the console is free */
1518 m->no_console_output = false;
1522 if (old_state != state)
1523 log_debug_unit(UNIT(s)->id, "%s changed %s -> %s", UNIT(s)->id, service_state_to_string(old_state), service_state_to_string(state));
1525 unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS);
1526 s->reload_result = SERVICE_SUCCESS;
1529 static int service_coldplug(Unit *u) {
1530 Service *s = SERVICE(u);
1534 assert(s->state == SERVICE_DEAD);
1536 if (s->deserialized_state != s->state) {
1538 if (IN_SET(s->deserialized_state,
1539 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1541 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1543 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1547 k = IN_SET(s->deserialized_state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD) ? s->timeout_start_usec : s->timeout_stop_usec;
1549 /* For the start/stop timeouts 0 means off */
1551 r = service_arm_timer(s, k);
1557 if (s->deserialized_state == SERVICE_AUTO_RESTART) {
1559 /* The restart timeouts 0 means immediately */
1560 r = service_arm_timer(s, s->restart_usec);
1565 if (pid_is_unwaited(s->main_pid) &&
1566 ((s->deserialized_state == SERVICE_START && IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_ONESHOT, SERVICE_NOTIFY)) ||
1567 IN_SET(s->deserialized_state,
1568 SERVICE_START, SERVICE_START_POST,
1569 SERVICE_RUNNING, SERVICE_RELOAD,
1570 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1572 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) {
1573 r = unit_watch_pid(UNIT(s), s->main_pid);
1578 if (pid_is_unwaited(s->control_pid) &&
1579 IN_SET(s->deserialized_state,
1580 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1582 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1584 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1585 r = unit_watch_pid(UNIT(s), s->control_pid);
1590 if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART))
1591 unit_watch_all_pids(UNIT(s));
1593 if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
1594 service_start_watchdog(s);
1596 service_set_state(s, s->deserialized_state);
1602 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1606 unsigned rn_fds = 0;
1613 if (s->socket_fd >= 0)
1616 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
1621 if (u->type != UNIT_SOCKET)
1626 r = socket_collect_fds(sock, &cfds, &cn_fds);
1639 t = new(int, rn_fds+cn_fds);
1646 memcpy(t, rfds, rn_fds * sizeof(int));
1647 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1652 rn_fds = rn_fds+cn_fds;
1667 static int service_spawn(
1672 bool apply_permissions,
1674 bool apply_tty_stdin,
1675 bool set_notify_socket,
1682 _cleanup_free_ int *fdsbuf = NULL;
1683 unsigned n_fds = 0, n_env = 0;
1684 _cleanup_strv_free_ char
1685 **argv = NULL, **final_env = NULL, **our_env = NULL;
1692 unit_realize_cgroup(UNIT(s));
1694 r = unit_setup_exec_runtime(UNIT(s));
1699 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1700 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1701 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1703 if (s->socket_fd >= 0) {
1704 fds = &s->socket_fd;
1707 r = service_collect_fds(s, &fdsbuf, &n_fds);
1715 if (timeout && s->timeout_start_usec > 0) {
1716 r = service_arm_timer(s, s->timeout_start_usec);
1720 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1722 r = unit_full_printf_strv(UNIT(s), c->argv, &argv);
1726 our_env = new0(char*, 4);
1732 if (set_notify_socket)
1733 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
1738 if (s->main_pid > 0)
1739 if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) {
1744 if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM)
1745 if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid()) < 0) {
1750 final_env = strv_env_merge(2, UNIT(s)->manager->environment, our_env, NULL);
1756 if (is_control && UNIT(s)->cgroup_path) {
1757 path = strappenda(UNIT(s)->cgroup_path, "/control");
1758 cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
1760 path = UNIT(s)->cgroup_path;
1770 UNIT(s)->manager->confirm_spawn,
1771 UNIT(s)->manager->cgroup_supported,
1775 s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL,
1781 r = unit_watch_pid(UNIT(s), pid);
1783 /* FIXME: we need to do something here */
1792 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1797 static int main_pid_good(Service *s) {
1800 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1803 /* If we know the pid file, then lets just check if it is
1805 if (s->main_pid_known) {
1807 /* If it's an alien child let's check if it is still
1809 if (s->main_pid_alien && s->main_pid > 0)
1810 return pid_is_alive(s->main_pid);
1812 /* .. otherwise assume we'll get a SIGCHLD for it,
1813 * which we really should wait for to collect exit
1814 * status and code */
1815 return s->main_pid > 0;
1818 /* We don't know the pid */
1822 _pure_ static int control_pid_good(Service *s) {
1825 return s->control_pid > 0;
1828 static int cgroup_good(Service *s) {
1833 if (!UNIT(s)->cgroup_path)
1836 r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path, true);
1843 static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
1847 if (f != SERVICE_SUCCESS)
1850 service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
1852 if (allow_restart &&
1853 !s->forbid_restart &&
1854 (s->restart == SERVICE_RESTART_ALWAYS ||
1855 (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
1856 (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
1857 (s->restart == SERVICE_RESTART_ON_WATCHDOG && s->result == SERVICE_FAILURE_WATCHDOG) ||
1858 (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL ||
1859 s->result == SERVICE_FAILURE_CORE_DUMP))) &&
1860 (s->result != SERVICE_FAILURE_EXIT_CODE ||
1861 !set_contains(s->restart_ignore_status.code, INT_TO_PTR(s->main_exec_status.status))) &&
1862 (s->result != SERVICE_FAILURE_SIGNAL ||
1863 !set_contains(s->restart_ignore_status.signal, INT_TO_PTR(s->main_exec_status.status)))) {
1865 r = service_arm_timer(s, s->restart_usec);
1869 service_set_state(s, SERVICE_AUTO_RESTART);
1872 s->forbid_restart = false;
1874 /* we want fresh tmpdirs in case service is started again immediately */
1875 exec_runtime_destroy(s->exec_runtime);
1876 s->exec_runtime = exec_runtime_unref(s->exec_runtime);
1878 /* Try to delete the pid file. At this point it will be
1879 * out-of-date, and some software might be confused by it, so
1880 * let's remove it. */
1882 unlink_noerrno(s->pid_file);
1887 log_warning_unit(UNIT(s)->id,
1888 "%s failed to run install restart timer: %s",
1889 UNIT(s)->id, strerror(-r));
1890 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
1893 static void service_enter_stop_post(Service *s, ServiceResult f) {
1897 if (f != SERVICE_SUCCESS)
1900 service_unwatch_control_pid(s);
1901 unit_watch_all_pids(UNIT(s));
1903 s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST];
1904 if (s->control_command) {
1905 s->control_command_id = SERVICE_EXEC_STOP_POST;
1907 r = service_spawn(s,
1911 !s->permissions_start_only,
1912 !s->root_directory_start_only,
1920 service_set_state(s, SERVICE_STOP_POST);
1922 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS);
1927 log_warning_unit(UNIT(s)->id,
1928 "%s failed to run 'stop-post' task: %s",
1929 UNIT(s)->id, strerror(-r));
1930 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
1933 static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
1938 if (f != SERVICE_SUCCESS)
1941 unit_watch_all_pids(UNIT(s));
1943 r = unit_kill_context(
1946 state != SERVICE_STOP_SIGTERM && state != SERVICE_FINAL_SIGTERM,
1955 if (s->timeout_stop_usec > 0) {
1956 r = service_arm_timer(s, s->timeout_stop_usec);
1961 service_set_state(s, state);
1962 } else if (state == SERVICE_STOP_SIGTERM)
1963 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS);
1964 else if (state == SERVICE_STOP_SIGKILL)
1965 service_enter_stop_post(s, SERVICE_SUCCESS);
1966 else if (state == SERVICE_FINAL_SIGTERM)
1967 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS);
1969 service_enter_dead(s, SERVICE_SUCCESS, true);
1974 log_warning_unit(UNIT(s)->id,
1975 "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
1977 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1978 service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
1980 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
1983 static void service_enter_stop(Service *s, ServiceResult f) {
1988 if (f != SERVICE_SUCCESS)
1991 service_unwatch_control_pid(s);
1992 unit_watch_all_pids(UNIT(s));
1994 s->control_command = s->exec_command[SERVICE_EXEC_STOP];
1995 if (s->control_command) {
1996 s->control_command_id = SERVICE_EXEC_STOP;
1998 r = service_spawn(s,
2002 !s->permissions_start_only,
2003 !s->root_directory_start_only,
2011 service_set_state(s, SERVICE_STOP);
2013 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2018 log_warning_unit(UNIT(s)->id,
2019 "%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
2020 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2023 static void service_enter_running(Service *s, ServiceResult f) {
2024 int main_pid_ok, cgroup_ok;
2027 if (f != SERVICE_SUCCESS)
2030 main_pid_ok = main_pid_good(s);
2031 cgroup_ok = cgroup_good(s);
2033 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2034 (s->bus_name_good || s->type != SERVICE_DBUS))
2035 service_set_state(s, SERVICE_RUNNING);
2036 else if (s->remain_after_exit)
2037 service_set_state(s, SERVICE_EXITED);
2039 service_enter_stop(s, SERVICE_SUCCESS);
2042 static void service_enter_start_post(Service *s) {
2046 service_unwatch_control_pid(s);
2047 service_reset_watchdog(s);
2049 s->control_command = s->exec_command[SERVICE_EXEC_START_POST];
2050 if (s->control_command) {
2051 s->control_command_id = SERVICE_EXEC_START_POST;
2053 r = service_spawn(s,
2057 !s->permissions_start_only,
2058 !s->root_directory_start_only,
2066 service_set_state(s, SERVICE_START_POST);
2068 service_enter_running(s, SERVICE_SUCCESS);
2073 log_warning_unit(UNIT(s)->id,
2074 "%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
2075 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2078 static void service_kill_control_processes(Service *s) {
2081 if (!UNIT(s)->cgroup_path)
2084 p = strappenda(UNIT(s)->cgroup_path, "/control");
2085 cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, p, SIGKILL, true, true, true, NULL);
2088 static void service_enter_start(Service *s) {
2095 assert(s->exec_command[SERVICE_EXEC_START]);
2096 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2098 service_unwatch_control_pid(s);
2099 service_unwatch_main_pid(s);
2101 /* We want to ensure that nobody leaks processes from
2102 * START_PRE here, so let's go on a killing spree, People
2103 * should not spawn long running processes from START_PRE. */
2104 service_kill_control_processes(s);
2106 if (s->type == SERVICE_FORKING) {
2107 s->control_command_id = SERVICE_EXEC_START;
2108 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2110 s->main_command = NULL;
2112 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2113 s->control_command = NULL;
2115 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2118 r = service_spawn(s,
2120 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS ||
2121 s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT,
2126 s->notify_access != NOTIFY_NONE,
2132 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) {
2133 /* For simple services we immediately start
2134 * the START_POST binaries. */
2136 service_set_main_pid(s, pid);
2137 service_enter_start_post(s);
2139 } else if (s->type == SERVICE_FORKING) {
2141 /* For forking services we wait until the start
2142 * process exited. */
2144 s->control_pid = pid;
2145 service_set_state(s, SERVICE_START);
2147 } else if (s->type == SERVICE_ONESHOT ||
2148 s->type == SERVICE_DBUS ||
2149 s->type == SERVICE_NOTIFY) {
2151 /* For oneshot services we wait until the start
2152 * process exited, too, but it is our main process. */
2154 /* For D-Bus services we know the main pid right away,
2155 * but wait for the bus name to appear on the
2156 * bus. Notify services are similar. */
2158 service_set_main_pid(s, pid);
2159 service_set_state(s, SERVICE_START);
2161 assert_not_reached("Unknown service type");
2166 log_warning_unit(UNIT(s)->id,
2167 "%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
2168 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2171 static void service_enter_start_pre(Service *s) {
2176 service_unwatch_control_pid(s);
2178 s->control_command = s->exec_command[SERVICE_EXEC_START_PRE];
2179 if (s->control_command) {
2180 /* Before we start anything, let's clear up what might
2181 * be left from previous runs. */
2182 service_kill_control_processes(s);
2184 s->control_command_id = SERVICE_EXEC_START_PRE;
2186 r = service_spawn(s,
2190 !s->permissions_start_only,
2191 !s->root_directory_start_only,
2199 service_set_state(s, SERVICE_START_PRE);
2201 service_enter_start(s);
2206 log_warning_unit(UNIT(s)->id,
2207 "%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
2208 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2211 static void service_enter_restart(Service *s) {
2212 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2217 if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) {
2218 /* Don't restart things if we are going down anyway */
2219 log_info_unit(UNIT(s)->id,
2220 "Stop job pending for unit, delaying automatic restart.");
2222 r = service_arm_timer(s, s->restart_usec);
2229 /* Any units that are bound to this service must also be
2230 * restarted. We use JOB_RESTART (instead of the more obvious
2231 * JOB_START) here so that those dependency jobs will be added
2233 r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL);
2237 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
2238 * it will be canceled as part of the service_stop() call that
2239 * is executed as part of JOB_RESTART. */
2241 log_debug_unit(UNIT(s)->id,
2242 "%s scheduled restart job.", UNIT(s)->id);
2246 log_warning_unit(UNIT(s)->id,
2247 "%s failed to schedule restart job: %s",
2248 UNIT(s)->id, bus_error_message(&error, -r));
2249 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
2252 static void service_enter_reload(Service *s) {
2257 service_unwatch_control_pid(s);
2259 s->control_command = s->exec_command[SERVICE_EXEC_RELOAD];
2260 if (s->control_command) {
2261 s->control_command_id = SERVICE_EXEC_RELOAD;
2263 r = service_spawn(s,
2267 !s->permissions_start_only,
2268 !s->root_directory_start_only,
2276 service_set_state(s, SERVICE_RELOAD);
2278 service_enter_running(s, SERVICE_SUCCESS);
2283 log_warning_unit(UNIT(s)->id,
2284 "%s failed to run 'reload' task: %s",
2285 UNIT(s)->id, strerror(-r));
2286 s->reload_result = SERVICE_FAILURE_RESOURCES;
2287 service_enter_running(s, SERVICE_SUCCESS);
2290 static void service_run_next_control(Service *s) {
2294 assert(s->control_command);
2295 assert(s->control_command->command_next);
2297 assert(s->control_command_id != SERVICE_EXEC_START);
2299 s->control_command = s->control_command->command_next;
2300 service_unwatch_control_pid(s);
2302 r = service_spawn(s,
2306 !s->permissions_start_only,
2307 !s->root_directory_start_only,
2308 s->control_command_id == SERVICE_EXEC_START_PRE ||
2309 s->control_command_id == SERVICE_EXEC_STOP_POST,
2319 log_warning_unit(UNIT(s)->id,
2320 "%s failed to run next control task: %s",
2321 UNIT(s)->id, strerror(-r));
2323 if (s->state == SERVICE_START_PRE)
2324 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2325 else if (s->state == SERVICE_STOP)
2326 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2327 else if (s->state == SERVICE_STOP_POST)
2328 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2329 else if (s->state == SERVICE_RELOAD) {
2330 s->reload_result = SERVICE_FAILURE_RESOURCES;
2331 service_enter_running(s, SERVICE_SUCCESS);
2333 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2336 static void service_run_next_main(Service *s) {
2341 assert(s->main_command);
2342 assert(s->main_command->command_next);
2343 assert(s->type == SERVICE_ONESHOT);
2345 s->main_command = s->main_command->command_next;
2346 service_unwatch_main_pid(s);
2348 r = service_spawn(s,
2355 s->notify_access != NOTIFY_NONE,
2361 service_set_main_pid(s, pid);
2366 log_warning_unit(UNIT(s)->id,
2367 "%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
2368 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2371 static int service_start_limit_test(Service *s) {
2374 if (ratelimit_test(&s->start_limit))
2377 switch (s->start_limit_action) {
2379 case SERVICE_START_LIMIT_NONE:
2380 log_warning_unit(UNIT(s)->id,
2381 "%s start request repeated too quickly, refusing to start.",
2385 case SERVICE_START_LIMIT_REBOOT: {
2386 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2389 log_warning_unit(UNIT(s)->id,
2390 "%s start request repeated too quickly, rebooting.", UNIT(s)->id);
2392 r = manager_add_job_by_name(UNIT(s)->manager, JOB_START,
2393 SPECIAL_REBOOT_TARGET, JOB_REPLACE,
2394 true, &error, NULL);
2396 log_error_unit(UNIT(s)->id,
2397 "Failed to reboot: %s.", bus_error_message(&error, r));
2402 case SERVICE_START_LIMIT_REBOOT_FORCE:
2403 log_warning_unit(UNIT(s)->id,
2404 "%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id);
2405 UNIT(s)->manager->exit_code = MANAGER_REBOOT;
2408 case SERVICE_START_LIMIT_REBOOT_IMMEDIATE:
2409 log_warning_unit(UNIT(s)->id,
2410 "%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id);
2412 reboot(RB_AUTOBOOT);
2416 log_error_unit(UNIT(s)->id,
2417 "start limit action=%i", s->start_limit_action);
2418 assert_not_reached("Unknown StartLimitAction.");
2424 static int service_start(Unit *u) {
2425 Service *s = SERVICE(u);
2430 /* We cannot fulfill this request right now, try again later
2432 if (s->state == SERVICE_STOP ||
2433 s->state == SERVICE_STOP_SIGTERM ||
2434 s->state == SERVICE_STOP_SIGKILL ||
2435 s->state == SERVICE_STOP_POST ||
2436 s->state == SERVICE_FINAL_SIGTERM ||
2437 s->state == SERVICE_FINAL_SIGKILL)
2440 /* Already on it! */
2441 if (s->state == SERVICE_START_PRE ||
2442 s->state == SERVICE_START ||
2443 s->state == SERVICE_START_POST)
2446 /* A service that will be restarted must be stopped first to
2447 * trigger BindsTo and/or OnFailure dependencies. If a user
2448 * does not want to wait for the holdoff time to elapse, the
2449 * service should be manually restarted, not started. We
2450 * simply return EAGAIN here, so that any start jobs stay
2451 * queued, and assume that the auto restart timer will
2452 * eventually trigger the restart. */
2453 if (s->state == SERVICE_AUTO_RESTART)
2456 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED);
2458 /* Make sure we don't enter a busy loop of some kind. */
2459 r = service_start_limit_test(s);
2461 service_enter_dead(s, SERVICE_FAILURE_START_LIMIT, false);
2465 s->result = SERVICE_SUCCESS;
2466 s->reload_result = SERVICE_SUCCESS;
2467 s->main_pid_known = false;
2468 s->main_pid_alien = false;
2469 s->forbid_restart = false;
2471 service_enter_start_pre(s);
2475 static int service_stop(Unit *u) {
2476 Service *s = SERVICE(u);
2480 /* Don't create restart jobs from here. */
2481 s->forbid_restart = true;
2484 if (s->state == SERVICE_STOP ||
2485 s->state == SERVICE_STOP_SIGTERM ||
2486 s->state == SERVICE_STOP_SIGKILL ||
2487 s->state == SERVICE_STOP_POST ||
2488 s->state == SERVICE_FINAL_SIGTERM ||
2489 s->state == SERVICE_FINAL_SIGKILL)
2492 /* A restart will be scheduled or is in progress. */
2493 if (s->state == SERVICE_AUTO_RESTART) {
2494 service_set_state(s, SERVICE_DEAD);
2498 /* If there's already something running we go directly into
2500 if (s->state == SERVICE_START_PRE ||
2501 s->state == SERVICE_START ||
2502 s->state == SERVICE_START_POST ||
2503 s->state == SERVICE_RELOAD) {
2504 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2508 assert(s->state == SERVICE_RUNNING ||
2509 s->state == SERVICE_EXITED);
2511 service_enter_stop(s, SERVICE_SUCCESS);
2515 static int service_reload(Unit *u) {
2516 Service *s = SERVICE(u);
2520 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2522 service_enter_reload(s);
2526 _pure_ static bool service_can_reload(Unit *u) {
2527 Service *s = SERVICE(u);
2531 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2534 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2535 Service *s = SERVICE(u);
2541 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2542 unit_serialize_item(u, f, "result", service_result_to_string(s->result));
2543 unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
2545 if (s->control_pid > 0)
2546 unit_serialize_item_format(u, f, "control-pid", PID_FMT,
2549 if (s->main_pid_known && s->main_pid > 0)
2550 unit_serialize_item_format(u, f, "main-pid", PID_FMT, s->main_pid);
2552 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2555 unit_serialize_item(u, f, "status-text", s->status_text);
2557 /* FIXME: There's a minor uncleanliness here: if there are
2558 * multiple commands attached here, we will start from the
2559 * first one again */
2560 if (s->control_command_id >= 0)
2561 unit_serialize_item(u, f, "control-command",
2562 service_exec_command_to_string(s->control_command_id));
2564 if (s->socket_fd >= 0) {
2567 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2570 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2573 if (s->main_exec_status.pid > 0) {
2574 unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT,
2575 s->main_exec_status.pid);
2576 dual_timestamp_serialize(f, "main-exec-status-start",
2577 &s->main_exec_status.start_timestamp);
2578 dual_timestamp_serialize(f, "main-exec-status-exit",
2579 &s->main_exec_status.exit_timestamp);
2581 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2582 unit_serialize_item_format(u, f, "main-exec-status-code", "%i",
2583 s->main_exec_status.code);
2584 unit_serialize_item_format(u, f, "main-exec-status-status", "%i",
2585 s->main_exec_status.status);
2588 if (dual_timestamp_is_set(&s->watchdog_timestamp))
2589 dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
2591 if (s->forbid_restart)
2592 unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart));
2597 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2598 Service *s = SERVICE(u);
2605 if (streq(key, "state")) {
2608 state = service_state_from_string(value);
2610 log_debug_unit(u->id, "Failed to parse state value %s", value);
2612 s->deserialized_state = state;
2613 } else if (streq(key, "result")) {
2616 f = service_result_from_string(value);
2618 log_debug_unit(u->id, "Failed to parse result value %s", value);
2619 else if (f != SERVICE_SUCCESS)
2622 } else if (streq(key, "reload-result")) {
2625 f = service_result_from_string(value);
2627 log_debug_unit(u->id, "Failed to parse reload result value %s", value);
2628 else if (f != SERVICE_SUCCESS)
2629 s->reload_result = f;
2631 } else if (streq(key, "control-pid")) {
2634 if (parse_pid(value, &pid) < 0)
2635 log_debug_unit(u->id, "Failed to parse control-pid value %s", value);
2637 s->control_pid = pid;
2638 } else if (streq(key, "main-pid")) {
2641 if (parse_pid(value, &pid) < 0)
2642 log_debug_unit(u->id, "Failed to parse main-pid value %s", value);
2644 service_set_main_pid(s, pid);
2645 unit_watch_pid(UNIT(s), pid);
2647 } else if (streq(key, "main-pid-known")) {
2650 b = parse_boolean(value);
2652 log_debug_unit(u->id, "Failed to parse main-pid-known value %s", value);
2654 s->main_pid_known = b;
2655 } else if (streq(key, "status-text")) {
2662 free(s->status_text);
2666 } else if (streq(key, "control-command")) {
2667 ServiceExecCommand id;
2669 id = service_exec_command_from_string(value);
2671 log_debug_unit(u->id, "Failed to parse exec-command value %s", value);
2673 s->control_command_id = id;
2674 s->control_command = s->exec_command[id];
2676 } else if (streq(key, "socket-fd")) {
2679 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2680 log_debug_unit(u->id, "Failed to parse socket-fd value %s", value);
2683 if (s->socket_fd >= 0)
2684 close_nointr_nofail(s->socket_fd);
2685 s->socket_fd = fdset_remove(fds, fd);
2687 } else if (streq(key, "main-exec-status-pid")) {
2690 if (parse_pid(value, &pid) < 0)
2691 log_debug_unit(u->id, "Failed to parse main-exec-status-pid value %s", value);
2693 s->main_exec_status.pid = pid;
2694 } else if (streq(key, "main-exec-status-code")) {
2697 if (safe_atoi(value, &i) < 0)
2698 log_debug_unit(u->id, "Failed to parse main-exec-status-code value %s", value);
2700 s->main_exec_status.code = i;
2701 } else if (streq(key, "main-exec-status-status")) {
2704 if (safe_atoi(value, &i) < 0)
2705 log_debug_unit(u->id, "Failed to parse main-exec-status-status value %s", value);
2707 s->main_exec_status.status = i;
2708 } else if (streq(key, "main-exec-status-start"))
2709 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2710 else if (streq(key, "main-exec-status-exit"))
2711 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2712 else if (streq(key, "watchdog-timestamp"))
2713 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
2714 else if (streq(key, "forbid-restart")) {
2717 b = parse_boolean(value);
2719 log_debug_unit(u->id, "Failed to parse forbid-restart value %s", value);
2721 s->forbid_restart = b;
2723 log_debug_unit(u->id, "Unknown serialization key '%s'", key);
2728 _pure_ static UnitActiveState service_active_state(Unit *u) {
2729 const UnitActiveState *table;
2733 table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
2735 return table[SERVICE(u)->state];
2738 static const char *service_sub_state_to_string(Unit *u) {
2741 return service_state_to_string(SERVICE(u)->state);
2744 static bool service_check_gc(Unit *u) {
2745 Service *s = SERVICE(u);
2749 /* Never clean up services that still have a process around,
2750 * even if the service is formally dead. */
2751 if (cgroup_good(s) > 0 ||
2752 main_pid_good(s) > 0 ||
2753 control_pid_good(s) > 0)
2756 #ifdef HAVE_SYSV_COMPAT
2764 _pure_ static bool service_check_snapshot(Unit *u) {
2765 Service *s = SERVICE(u);
2769 return (s->socket_fd < 0);
2772 static int service_retry_pid_file(Service *s) {
2775 assert(s->pid_file);
2776 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2778 r = service_load_pid_file(s, false);
2782 service_unwatch_pid_file(s);
2784 service_enter_running(s, SERVICE_SUCCESS);
2788 static int service_watch_pid_file(Service *s) {
2791 log_debug_unit(UNIT(s)->id,
2792 "Setting watch for %s's PID file %s",
2793 UNIT(s)->id, s->pid_file_pathspec->path);
2794 r = path_spec_watch(s->pid_file_pathspec, service_dispatch_io);
2798 /* the pidfile might have appeared just before we set the watch */
2799 log_debug_unit(UNIT(s)->id,
2800 "Trying to read %s's PID file %s in case it changed",
2801 UNIT(s)->id, s->pid_file_pathspec->path);
2802 service_retry_pid_file(s);
2806 log_error_unit(UNIT(s)->id,
2807 "Failed to set a watch for %s's PID file %s: %s",
2808 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
2809 service_unwatch_pid_file(s);
2813 static int service_demand_pid_file(Service *s) {
2816 assert(s->pid_file);
2817 assert(!s->pid_file_pathspec);
2819 ps = new0(PathSpec, 1);
2824 ps->path = strdup(s->pid_file);
2830 path_kill_slashes(ps->path);
2832 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2833 * keep their PID file open all the time. */
2834 ps->type = PATH_MODIFIED;
2835 ps->inotify_fd = -1;
2837 s->pid_file_pathspec = ps;
2839 return service_watch_pid_file(s);
2842 static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata) {
2843 PathSpec *p = userdata;
2848 s = SERVICE(p->unit);
2852 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2853 assert(s->pid_file_pathspec);
2854 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2856 log_debug_unit(UNIT(s)->id, "inotify event for %s", UNIT(s)->id);
2858 if (path_spec_fd_event(p, events) < 0)
2861 if (service_retry_pid_file(s) == 0)
2864 if (service_watch_pid_file(s) < 0)
2870 service_unwatch_pid_file(s);
2871 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2875 static void service_notify_cgroup_empty_event(Unit *u) {
2876 Service *s = SERVICE(u);
2880 log_debug_unit(u->id, "%s: cgroup is empty", u->id);
2884 /* Waiting for SIGCHLD is usually more interesting,
2885 * because it includes return codes/signals. Which is
2886 * why we ignore the cgroup events for most cases,
2887 * except when we don't know pid which to expect the
2891 case SERVICE_START_POST:
2892 /* If we were hoping for the daemon to write its PID file,
2893 * we can give up now. */
2894 if (s->pid_file_pathspec) {
2895 log_warning_unit(u->id,
2896 "%s never wrote its PID file. Failing.", UNIT(s)->id);
2897 service_unwatch_pid_file(s);
2898 if (s->state == SERVICE_START)
2899 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2901 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2905 case SERVICE_RUNNING:
2906 /* service_enter_running() will figure out what to do */
2907 service_enter_running(s, SERVICE_SUCCESS);
2910 case SERVICE_STOP_SIGTERM:
2911 case SERVICE_STOP_SIGKILL:
2913 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2914 service_enter_stop_post(s, SERVICE_SUCCESS);
2918 case SERVICE_STOP_POST:
2919 case SERVICE_FINAL_SIGTERM:
2920 case SERVICE_FINAL_SIGKILL:
2921 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2922 service_enter_dead(s, SERVICE_SUCCESS, true);
2931 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2932 Service *s = SERVICE(u);
2938 if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) :
2939 is_clean_exit_lsb(code, status, &s->success_status))
2940 f = SERVICE_SUCCESS;
2941 else if (code == CLD_EXITED)
2942 f = SERVICE_FAILURE_EXIT_CODE;
2943 else if (code == CLD_KILLED)
2944 f = SERVICE_FAILURE_SIGNAL;
2945 else if (code == CLD_DUMPED)
2946 f = SERVICE_FAILURE_CORE_DUMP;
2948 assert_not_reached("Unknown code");
2950 if (s->main_pid == pid) {
2951 /* Forking services may occasionally move to a new PID.
2952 * As long as they update the PID file before exiting the old
2953 * PID, they're fine. */
2954 if (service_load_pid_file(s, false) == 0)
2958 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2960 if (s->main_command) {
2961 /* If this is not a forking service than the
2962 * main process got started and hence we copy
2963 * the exit status so that it is recorded both
2964 * as main and as control process exit
2967 s->main_command->exec_status = s->main_exec_status;
2969 if (s->main_command->ignore)
2970 f = SERVICE_SUCCESS;
2971 } else if (s->exec_command[SERVICE_EXEC_START]) {
2973 /* If this is a forked process, then we should
2974 * ignore the return value if this was
2975 * configured for the starter process */
2977 if (s->exec_command[SERVICE_EXEC_START]->ignore)
2978 f = SERVICE_SUCCESS;
2981 log_struct_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2983 "MESSAGE=%s: main process exited, code=%s, status=%i/%s",
2984 u->id, sigchld_code_to_string(code), status,
2985 strna(code == CLD_EXITED
2986 ? exit_status_to_string(status, EXIT_STATUS_FULL)
2987 : signal_to_string(status)),
2988 "EXIT_CODE=%s", sigchld_code_to_string(code),
2989 "EXIT_STATUS=%i", status,
2992 if (f != SERVICE_SUCCESS)
2995 if (s->main_command &&
2996 s->main_command->command_next &&
2997 f == SERVICE_SUCCESS) {
2999 /* There is another command to *
3000 * execute, so let's do that. */
3002 log_debug_unit(u->id,
3003 "%s running next main command for state %s",
3004 u->id, service_state_to_string(s->state));
3005 service_run_next_main(s);
3009 /* The service exited, so the service is officially
3011 s->main_command = NULL;
3015 case SERVICE_START_POST:
3016 case SERVICE_RELOAD:
3018 /* Need to wait until the operation is
3023 if (s->type == SERVICE_ONESHOT) {
3024 /* This was our main goal, so let's go on */
3025 if (f == SERVICE_SUCCESS)
3026 service_enter_start_post(s);
3028 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3034 case SERVICE_RUNNING:
3035 service_enter_running(s, f);
3038 case SERVICE_STOP_SIGTERM:
3039 case SERVICE_STOP_SIGKILL:
3041 if (!control_pid_good(s))
3042 service_enter_stop_post(s, f);
3044 /* If there is still a control process, wait for that first */
3047 case SERVICE_STOP_POST:
3048 case SERVICE_FINAL_SIGTERM:
3049 case SERVICE_FINAL_SIGKILL:
3051 if (!control_pid_good(s))
3052 service_enter_dead(s, f, true);
3056 assert_not_reached("Uh, main process died at wrong time.");
3060 } else if (s->control_pid == pid) {
3063 if (s->control_command) {
3064 exec_status_exit(&s->control_command->exec_status,
3065 &s->exec_context, pid, code, status);
3067 if (s->control_command->ignore)
3068 f = SERVICE_SUCCESS;
3071 log_full_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, u->id,
3072 "%s: control process exited, code=%s status=%i",
3073 u->id, sigchld_code_to_string(code), status);
3075 if (f != SERVICE_SUCCESS)
3078 /* Immediately get rid of the cgroup, so that the
3079 * kernel doesn't delay the cgroup empty messages for
3080 * the service cgroup any longer than necessary */
3081 service_kill_control_processes(s);
3083 if (s->control_command &&
3084 s->control_command->command_next &&
3085 f == SERVICE_SUCCESS) {
3087 /* There is another command to *
3088 * execute, so let's do that. */
3090 log_debug_unit(u->id,
3091 "%s running next control command for state %s",
3092 u->id, service_state_to_string(s->state));
3093 service_run_next_control(s);
3096 /* No further commands for this step, so let's
3097 * figure out what to do next */
3099 s->control_command = NULL;
3100 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
3102 log_debug_unit(u->id,
3103 "%s got final SIGCHLD for state %s",
3104 u->id, service_state_to_string(s->state));
3108 case SERVICE_START_PRE:
3109 if (f == SERVICE_SUCCESS)
3110 service_enter_start(s);
3112 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3116 if (s->type != SERVICE_FORKING)
3117 /* Maybe spurious event due to a reload that changed the type? */
3120 if (f != SERVICE_SUCCESS) {
3121 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3126 bool has_start_post;
3129 /* Let's try to load the pid file here if we can.
3130 * The PID file might actually be created by a START_POST
3131 * script. In that case don't worry if the loading fails. */
3133 has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
3134 r = service_load_pid_file(s, !has_start_post);
3135 if (!has_start_post && r < 0) {
3136 r = service_demand_pid_file(s);
3137 if (r < 0 || !cgroup_good(s))
3138 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3142 service_search_main_pid(s);
3144 service_enter_start_post(s);
3147 case SERVICE_START_POST:
3148 if (f != SERVICE_SUCCESS) {
3149 service_enter_stop(s, f);
3156 r = service_load_pid_file(s, true);
3158 r = service_demand_pid_file(s);
3159 if (r < 0 || !cgroup_good(s))
3160 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3164 service_search_main_pid(s);
3166 service_enter_running(s, SERVICE_SUCCESS);
3169 case SERVICE_RELOAD:
3170 if (f == SERVICE_SUCCESS) {
3171 service_load_pid_file(s, true);
3172 service_search_main_pid(s);
3175 s->reload_result = f;
3176 service_enter_running(s, SERVICE_SUCCESS);
3180 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
3183 case SERVICE_STOP_SIGTERM:
3184 case SERVICE_STOP_SIGKILL:
3185 if (main_pid_good(s) <= 0)
3186 service_enter_stop_post(s, f);
3188 /* If there is still a service
3189 * process around, wait until
3190 * that one quit, too */
3193 case SERVICE_STOP_POST:
3194 case SERVICE_FINAL_SIGTERM:
3195 case SERVICE_FINAL_SIGKILL:
3196 if (main_pid_good(s) <= 0)
3197 service_enter_dead(s, f, true);
3201 assert_not_reached("Uh, control process died at wrong time.");
3206 /* Notify clients about changed exit status */
3207 unit_add_to_dbus_queue(u);
3209 /* We got one SIGCHLD for the service, let's watch all
3210 * processes that are now running of the service, and watch
3211 * that. Among the PIDs we then watch will be children
3212 * reassigned to us, which hopefully allows us to identify
3213 * when all children are gone */
3214 unit_tidy_watch_pids(u, s->main_pid, s->control_pid);
3215 unit_watch_all_pids(u);
3217 /* If the PID set is empty now, then let's finish this off */
3218 if (set_isempty(u->pids))
3219 service_notify_cgroup_empty_event(u);
3222 static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) {
3223 Service *s = SERVICE(userdata);
3226 assert(source == s->timer_event_source);
3230 case SERVICE_START_PRE:
3232 log_warning_unit(UNIT(s)->id,
3233 "%s %s operation timed out. Terminating.",
3235 s->state == SERVICE_START ? "start" : "start-pre");
3236 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3239 case SERVICE_START_POST:
3240 log_warning_unit(UNIT(s)->id,
3241 "%s start-post operation timed out. Stopping.", UNIT(s)->id);
3242 service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
3245 case SERVICE_RELOAD:
3246 log_warning_unit(UNIT(s)->id,
3247 "%s reload operation timed out. Stopping.", UNIT(s)->id);
3248 s->reload_result = SERVICE_FAILURE_TIMEOUT;
3249 service_enter_running(s, SERVICE_SUCCESS);
3253 log_warning_unit(UNIT(s)->id,
3254 "%s stopping timed out. Terminating.", UNIT(s)->id);
3255 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3258 case SERVICE_STOP_SIGTERM:
3259 if (s->kill_context.send_sigkill) {
3260 log_warning_unit(UNIT(s)->id,
3261 "%s stop-sigterm timed out. Killing.", UNIT(s)->id);
3262 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3264 log_warning_unit(UNIT(s)->id,
3265 "%s stop-sigterm timed out. Skipping SIGKILL.", UNIT(s)->id);
3266 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3271 case SERVICE_STOP_SIGKILL:
3272 /* Uh, we sent a SIGKILL and it is still not gone?
3273 * Must be something we cannot kill, so let's just be
3274 * weirded out and continue */
3276 log_warning_unit(UNIT(s)->id,
3277 "%s still around after SIGKILL. Ignoring.", UNIT(s)->id);
3278 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3281 case SERVICE_STOP_POST:
3282 log_warning_unit(UNIT(s)->id,
3283 "%s stop-post timed out. Terminating.", UNIT(s)->id);
3284 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3287 case SERVICE_FINAL_SIGTERM:
3288 if (s->kill_context.send_sigkill) {
3289 log_warning_unit(UNIT(s)->id,
3290 "%s stop-final-sigterm timed out. Killing.", UNIT(s)->id);
3291 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3293 log_warning_unit(UNIT(s)->id,
3294 "%s stop-final-sigterm timed out. Skipping SIGKILL. Entering failed mode.",
3296 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
3301 case SERVICE_FINAL_SIGKILL:
3302 log_warning_unit(UNIT(s)->id,
3303 "%s still around after final SIGKILL. Entering failed mode.", UNIT(s)->id);
3304 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
3307 case SERVICE_AUTO_RESTART:
3308 log_info_unit(UNIT(s)->id,
3309 s->restart_usec > 0 ?
3310 "%s holdoff time over, scheduling restart." :
3311 "%s has no holdoff time, scheduling restart.",
3313 service_enter_restart(s);
3317 assert_not_reached("Timeout at wrong time.");
3323 static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) {
3324 Service *s = SERVICE(userdata);
3327 assert(source == s->watchdog_event_source);
3329 log_error_unit(UNIT(s)->id, "%s watchdog timeout!", UNIT(s)->id);
3330 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_WATCHDOG);
3335 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3336 Service *s = SERVICE(u);
3338 bool notify_dbus = false;
3342 log_debug_unit(u->id, "%s: Got notification message from PID "PID_FMT" (%s...)",
3343 u->id, pid, tags && *tags ? tags[0] : "(empty)");
3345 if (s->notify_access == NOTIFY_NONE) {
3346 log_warning_unit(u->id,
3347 "%s: Got notification message from PID "PID_FMT", but reception is disabled.",
3352 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3354 if (s->main_pid != 0)
3355 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);
3357 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);
3361 /* Interpret MAINPID= */
3362 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3363 (s->state == SERVICE_START ||
3364 s->state == SERVICE_START_POST ||
3365 s->state == SERVICE_RUNNING ||
3366 s->state == SERVICE_RELOAD)) {
3368 if (parse_pid(e + 8, &pid) < 0)
3369 log_warning_unit(u->id, "Failed to parse notification message %s", e);
3371 log_debug_unit(u->id, "%s: got %s", u->id, e);
3372 service_set_main_pid(s, pid);
3373 unit_watch_pid(UNIT(s), pid);
3378 /* Interpret READY= */
3379 if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START && strv_find(tags, "READY=1")) {
3380 log_debug_unit(u->id, "%s: got READY=1", u->id);
3381 service_enter_start_post(s);
3385 /* Interpret STATUS= */
3386 e = strv_find_prefix(tags, "STATUS=");
3391 if (!utf8_is_valid(e+7)) {
3392 log_warning_unit(u->id, "Status message in notification is not UTF-8 clean.");
3396 log_debug_unit(u->id, "%s: got %s", u->id, e);
3407 if (!streq_ptr(s->status_text, t)) {
3408 free(s->status_text);
3415 /* Interpet WATCHDOG= */
3416 if (strv_find(tags, "WATCHDOG=1")) {
3417 log_debug_unit(u->id, "%s: got WATCHDOG=1", u->id);
3418 service_reset_watchdog(s);
3421 /* Notify clients about changed status or main pid */
3423 unit_add_to_dbus_queue(u);
3426 static int service_get_timeout(Unit *u, uint64_t *timeout) {
3427 Service *s = SERVICE(u);
3430 if (!s->timer_event_source)
3433 r = sd_event_source_get_time(s->timer_event_source, timeout);
3440 #ifdef HAVE_SYSV_COMPAT
3442 static int service_enumerate(Manager *m) {
3445 _cleanup_closedir_ DIR *d = NULL;
3446 _cleanup_free_ char *path = NULL, *fpath = NULL, *name = NULL;
3447 Set *runlevel_services[ELEMENTSOF(rcnd_table)] = {};
3448 _cleanup_set_free_ Set *shutdown_services = NULL;
3455 if (m->running_as != SYSTEMD_SYSTEM)
3458 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3459 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3463 path = strjoin(*p, "/", rcnd_table[i].path, NULL);
3474 if (errno != ENOENT)
3475 log_warning("opendir(%s) failed: %m", path);
3480 while ((de = readdir(d))) {
3483 if (ignore_file(de->d_name))
3486 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3489 if (strlen(de->d_name) < 4)
3492 a = undecchar(de->d_name[1]);
3493 b = undecchar(de->d_name[2]);
3499 fpath = strjoin(path, "/", de->d_name, NULL);
3505 if (access(fpath, X_OK) < 0) {
3507 if (errno != ENOENT)
3508 log_warning("access() failed on %s: %m", fpath);
3514 name = sysv_translate_name(de->d_name + 3);
3520 r = manager_load_unit_prepare(m, name, NULL, NULL, &service);
3522 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3526 if (de->d_name[0] == 'S') {
3528 if (rcnd_table[i].type == RUNLEVEL_UP) {
3529 SERVICE(service)->sysv_start_priority_from_rcnd =
3530 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3532 SERVICE(service)->sysv_enabled = true;
3535 r = set_ensure_allocated(&runlevel_services[i],
3536 trivial_hash_func, trivial_compare_func);
3540 r = set_put(runlevel_services[i], service);
3544 } else if (de->d_name[0] == 'K' &&
3545 (rcnd_table[i].type == RUNLEVEL_DOWN)) {
3547 r = set_ensure_allocated(&shutdown_services,
3548 trivial_hash_func, trivial_compare_func);
3552 r = set_put(shutdown_services, service);
3559 /* Now we loaded all stubs and are aware of the lowest
3560 start-up priority for all services, not let's actually load
3561 the services, this will also tell us which services are
3562 actually native now */
3563 manager_dispatch_load_queue(m);
3565 /* If this is a native service, rely on native ways to pull in
3566 * a service, don't pull it in via sysv rcN.d links. */
3567 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3568 SET_FOREACH(service, runlevel_services[i], j) {
3569 service = unit_follow_merge(service);
3571 if (service->fragment_path)
3574 r = unit_add_two_dependencies_by_name_inverse(
3575 service, UNIT_AFTER, UNIT_WANTS,
3576 rcnd_table[i].target, NULL, true);
3581 /* We honour K links only for halt/reboot. For the normal
3582 * runlevels we assume the stop jobs will be implicitly added
3583 * by the core logic. Also, we don't really distinguish here
3584 * between the runlevels 0 and 6 and just add them to the
3585 * special shutdown target. */
3586 SET_FOREACH(service, shutdown_services, j) {
3587 service = unit_follow_merge(service);
3589 if (service->fragment_path)
3592 r = unit_add_two_dependencies_by_name(
3593 service, UNIT_BEFORE, UNIT_CONFLICTS,
3594 SPECIAL_SHUTDOWN_TARGET, NULL, true);
3603 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3604 set_free(runlevel_services[i]);
3610 static void service_bus_name_owner_change(
3613 const char *old_owner,
3614 const char *new_owner) {
3616 Service *s = SERVICE(u);
3622 assert(streq(s->bus_name, name));
3623 assert(old_owner || new_owner);
3625 if (old_owner && new_owner)
3626 log_debug_unit(u->id,
3627 "%s's D-Bus name %s changed owner from %s to %s",
3628 u->id, name, old_owner, new_owner);
3630 log_debug_unit(u->id,
3631 "%s's D-Bus name %s no longer registered by %s",
3632 u->id, name, old_owner);
3634 log_debug_unit(u->id,
3635 "%s's D-Bus name %s now registered by %s",
3636 u->id, name, new_owner);
3638 s->bus_name_good = !!new_owner;
3640 if (s->type == SERVICE_DBUS) {
3642 /* service_enter_running() will figure out what to
3644 if (s->state == SERVICE_RUNNING)
3645 service_enter_running(s, SERVICE_SUCCESS);
3646 else if (s->state == SERVICE_START && new_owner)
3647 service_enter_start_post(s);
3649 } else if (new_owner &&
3651 (s->state == SERVICE_START ||
3652 s->state == SERVICE_START_POST ||
3653 s->state == SERVICE_RUNNING ||
3654 s->state == SERVICE_RELOAD)) {
3656 _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
3659 /* Try to acquire PID from bus service */
3661 r = sd_bus_get_owner(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds);
3663 r = sd_bus_creds_get_pid(creds, &pid);
3665 log_debug_unit(u->id, "%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
3667 service_set_main_pid(s, pid);
3668 unit_watch_pid(UNIT(s), pid);
3673 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3674 _cleanup_free_ char *peer = NULL;
3680 /* This is called by the socket code when instantiating a new
3681 * service for a stream socket and the socket needs to be
3684 if (UNIT(s)->load_state != UNIT_LOADED)
3687 if (s->socket_fd >= 0)
3690 if (s->state != SERVICE_DEAD)
3693 if (getpeername_pretty(fd, &peer) >= 0) {
3695 if (UNIT(s)->description) {
3696 _cleanup_free_ char *a;
3698 a = strjoin(UNIT(s)->description, " (", peer, ")", NULL);
3702 r = unit_set_description(UNIT(s), a);
3704 r = unit_set_description(UNIT(s), peer);
3712 unit_ref_set(&s->accept_socket, UNIT(sock));
3714 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3717 static void service_reset_failed(Unit *u) {
3718 Service *s = SERVICE(u);
3722 if (s->state == SERVICE_FAILED)
3723 service_set_state(s, SERVICE_DEAD);
3725 s->result = SERVICE_SUCCESS;
3726 s->reload_result = SERVICE_SUCCESS;
3728 RATELIMIT_RESET(s->start_limit);
3731 static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) {
3732 Service *s = SERVICE(u);
3734 return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error);
3737 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3738 [SERVICE_DEAD] = "dead",
3739 [SERVICE_START_PRE] = "start-pre",
3740 [SERVICE_START] = "start",
3741 [SERVICE_START_POST] = "start-post",
3742 [SERVICE_RUNNING] = "running",
3743 [SERVICE_EXITED] = "exited",
3744 [SERVICE_RELOAD] = "reload",
3745 [SERVICE_STOP] = "stop",
3746 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3747 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3748 [SERVICE_STOP_POST] = "stop-post",
3749 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3750 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3751 [SERVICE_FAILED] = "failed",
3752 [SERVICE_AUTO_RESTART] = "auto-restart",
3755 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3757 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3758 [SERVICE_RESTART_NO] = "no",
3759 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3760 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3761 [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog",
3762 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3763 [SERVICE_RESTART_ALWAYS] = "always"
3766 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3768 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3769 [SERVICE_SIMPLE] = "simple",
3770 [SERVICE_FORKING] = "forking",
3771 [SERVICE_ONESHOT] = "oneshot",
3772 [SERVICE_DBUS] = "dbus",
3773 [SERVICE_NOTIFY] = "notify",
3774 [SERVICE_IDLE] = "idle"
3777 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3779 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3780 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3781 [SERVICE_EXEC_START] = "ExecStart",
3782 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3783 [SERVICE_EXEC_RELOAD] = "ExecReload",
3784 [SERVICE_EXEC_STOP] = "ExecStop",
3785 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3788 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3790 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3791 [NOTIFY_NONE] = "none",
3792 [NOTIFY_MAIN] = "main",
3793 [NOTIFY_ALL] = "all"
3796 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3798 static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
3799 [SERVICE_SUCCESS] = "success",
3800 [SERVICE_FAILURE_RESOURCES] = "resources",
3801 [SERVICE_FAILURE_TIMEOUT] = "timeout",
3802 [SERVICE_FAILURE_EXIT_CODE] = "exit-code",
3803 [SERVICE_FAILURE_SIGNAL] = "signal",
3804 [SERVICE_FAILURE_CORE_DUMP] = "core-dump",
3805 [SERVICE_FAILURE_WATCHDOG] = "watchdog",
3806 [SERVICE_FAILURE_START_LIMIT] = "start-limit"
3809 DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
3811 static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = {
3812 [SERVICE_START_LIMIT_NONE] = "none",
3813 [SERVICE_START_LIMIT_REBOOT] = "reboot",
3814 [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force",
3815 [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate"
3817 DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction);
3819 const UnitVTable service_vtable = {
3820 .object_size = sizeof(Service),
3821 .exec_context_offset = offsetof(Service, exec_context),
3822 .cgroup_context_offset = offsetof(Service, cgroup_context),
3823 .kill_context_offset = offsetof(Service, kill_context),
3824 .exec_runtime_offset = offsetof(Service, exec_runtime),
3830 .private_section = "Service",
3832 .init = service_init,
3833 .done = service_done,
3834 .load = service_load,
3836 .coldplug = service_coldplug,
3838 .dump = service_dump,
3840 .start = service_start,
3841 .stop = service_stop,
3842 .reload = service_reload,
3844 .can_reload = service_can_reload,
3846 .kill = service_kill,
3848 .serialize = service_serialize,
3849 .deserialize_item = service_deserialize_item,
3851 .active_state = service_active_state,
3852 .sub_state_to_string = service_sub_state_to_string,
3854 .check_gc = service_check_gc,
3855 .check_snapshot = service_check_snapshot,
3857 .sigchld_event = service_sigchld_event,
3859 .reset_failed = service_reset_failed,
3861 .notify_cgroup_empty = service_notify_cgroup_empty_event,
3862 .notify_message = service_notify_message,
3864 .bus_name_owner_change = service_bus_name_owner_change,
3866 .bus_interface = "org.freedesktop.systemd1.Service",
3867 .bus_vtable = bus_service_vtable,
3868 .bus_set_property = bus_service_set_property,
3869 .bus_commit_properties = bus_service_commit_properties,
3871 .get_timeout = service_get_timeout,
3873 #ifdef HAVE_SYSV_COMPAT
3874 .enumerate = service_enumerate,
3877 .can_transient = true,
3879 .status_message_formats = {
3880 .starting_stopping = {
3881 [0] = "Starting %s...",
3882 [1] = "Stopping %s...",
3884 .finished_start_job = {
3885 [JOB_DONE] = "Started %s.",
3886 [JOB_FAILED] = "Failed to start %s.",
3887 [JOB_DEPENDENCY] = "Dependency failed for %s.",
3888 [JOB_TIMEOUT] = "Timed out starting %s.",
3890 .finished_stop_job = {
3891 [JOB_DONE] = "Stopped %s.",
3892 [JOB_FAILED] = "Stopped (with error) %s.",
3893 [JOB_TIMEOUT] = "Timed out stopping %s.",