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 RATELIMIT_INIT(s->start_limit,
151 u->manager->default_start_limit_interval,
152 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_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",
1444 static void service_set_state(Service *s, ServiceState state) {
1445 ServiceState old_state;
1446 const UnitActiveState *table;
1450 table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
1452 old_state = s->state;
1455 service_unwatch_pid_file(s);
1458 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1460 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1462 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL,
1463 SERVICE_AUTO_RESTART))
1464 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1467 SERVICE_START, SERVICE_START_POST,
1468 SERVICE_RUNNING, SERVICE_RELOAD,
1469 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1471 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1472 service_unwatch_main_pid(s);
1473 s->main_command = NULL;
1477 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1479 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1481 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1482 service_unwatch_control_pid(s);
1483 s->control_command = NULL;
1484 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1487 if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART))
1488 unit_unwatch_all_pids(UNIT(s));
1491 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1492 SERVICE_RUNNING, SERVICE_RELOAD,
1493 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
1494 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) &&
1495 !(state == SERVICE_DEAD && UNIT(s)->job)) {
1496 service_close_socket_fd(s);
1497 service_connection_unref(s);
1500 if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
1501 service_stop_watchdog(s);
1503 /* For the inactive states unit_notify() will trim the cgroup,
1504 * but for exit we have to do that ourselves... */
1505 if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
1506 unit_destroy_cgroup(UNIT(s));
1508 /* For remain_after_exit services, let's see if we can "release" the
1509 * hold on the console, since unit_notify() only does that in case of
1510 * change of state */
1511 if (state == SERVICE_EXITED && s->remain_after_exit &&
1512 UNIT(s)->manager->n_on_console > 0) {
1513 ExecContext *ec = unit_get_exec_context(UNIT(s));
1514 if (ec && exec_context_may_touch_console(ec)) {
1515 Manager *m = UNIT(s)->manager;
1518 if (m->n_on_console == 0)
1519 /* unset no_console_output flag, since the console is free */
1520 m->no_console_output = false;
1524 if (old_state != state)
1525 log_debug_unit(UNIT(s)->id, "%s changed %s -> %s", UNIT(s)->id, service_state_to_string(old_state), service_state_to_string(state));
1527 unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS);
1528 s->reload_result = SERVICE_SUCCESS;
1531 static int service_coldplug(Unit *u) {
1532 Service *s = SERVICE(u);
1536 assert(s->state == SERVICE_DEAD);
1538 if (s->deserialized_state != s->state) {
1540 if (IN_SET(s->deserialized_state,
1541 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1543 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1545 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1549 k = IN_SET(s->deserialized_state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD) ? s->timeout_start_usec : s->timeout_stop_usec;
1551 /* For the start/stop timeouts 0 means off */
1553 r = service_arm_timer(s, k);
1559 if (s->deserialized_state == SERVICE_AUTO_RESTART) {
1561 /* The restart timeouts 0 means immediately */
1562 r = service_arm_timer(s, s->restart_usec);
1567 if (pid_is_unwaited(s->main_pid) &&
1568 ((s->deserialized_state == SERVICE_START && IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_ONESHOT, SERVICE_NOTIFY)) ||
1569 IN_SET(s->deserialized_state,
1570 SERVICE_START, SERVICE_START_POST,
1571 SERVICE_RUNNING, SERVICE_RELOAD,
1572 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1574 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) {
1575 r = unit_watch_pid(UNIT(s), s->main_pid);
1580 if (pid_is_unwaited(s->control_pid) &&
1581 IN_SET(s->deserialized_state,
1582 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1584 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1586 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1587 r = unit_watch_pid(UNIT(s), s->control_pid);
1592 if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART))
1593 unit_watch_all_pids(UNIT(s));
1595 if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
1596 service_start_watchdog(s);
1598 service_set_state(s, s->deserialized_state);
1604 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1608 unsigned rn_fds = 0;
1615 if (s->socket_fd >= 0)
1618 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
1623 if (u->type != UNIT_SOCKET)
1628 r = socket_collect_fds(sock, &cfds, &cn_fds);
1641 t = new(int, rn_fds+cn_fds);
1648 memcpy(t, rfds, rn_fds * sizeof(int));
1649 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1654 rn_fds = rn_fds+cn_fds;
1669 static int service_spawn(
1674 bool apply_permissions,
1676 bool apply_tty_stdin,
1677 bool set_notify_socket,
1684 _cleanup_free_ int *fdsbuf = NULL;
1685 unsigned n_fds = 0, n_env = 0;
1686 _cleanup_strv_free_ char
1687 **argv = NULL, **final_env = NULL, **our_env = NULL;
1694 unit_realize_cgroup(UNIT(s));
1696 r = unit_setup_exec_runtime(UNIT(s));
1701 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1702 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1703 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1705 if (s->socket_fd >= 0) {
1706 fds = &s->socket_fd;
1709 r = service_collect_fds(s, &fdsbuf, &n_fds);
1717 if (timeout && s->timeout_start_usec > 0) {
1718 r = service_arm_timer(s, s->timeout_start_usec);
1722 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1724 r = unit_full_printf_strv(UNIT(s), c->argv, &argv);
1728 our_env = new0(char*, 4);
1734 if (set_notify_socket)
1735 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
1740 if (s->main_pid > 0)
1741 if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) {
1746 if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM)
1747 if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid()) < 0) {
1752 final_env = strv_env_merge(2, UNIT(s)->manager->environment, our_env, NULL);
1758 if (is_control && UNIT(s)->cgroup_path) {
1759 path = strappenda(UNIT(s)->cgroup_path, "/control");
1760 cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
1762 path = UNIT(s)->cgroup_path;
1772 UNIT(s)->manager->confirm_spawn,
1773 UNIT(s)->manager->cgroup_supported,
1777 s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL,
1783 r = unit_watch_pid(UNIT(s), pid);
1785 /* FIXME: we need to do something here */
1794 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1799 static int main_pid_good(Service *s) {
1802 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1805 /* If we know the pid file, then lets just check if it is
1807 if (s->main_pid_known) {
1809 /* If it's an alien child let's check if it is still
1811 if (s->main_pid_alien && s->main_pid > 0)
1812 return pid_is_alive(s->main_pid);
1814 /* .. otherwise assume we'll get a SIGCHLD for it,
1815 * which we really should wait for to collect exit
1816 * status and code */
1817 return s->main_pid > 0;
1820 /* We don't know the pid */
1824 _pure_ static int control_pid_good(Service *s) {
1827 return s->control_pid > 0;
1830 static int cgroup_good(Service *s) {
1835 if (!UNIT(s)->cgroup_path)
1838 r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path, true);
1845 static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
1849 if (f != SERVICE_SUCCESS)
1852 service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
1854 if (allow_restart &&
1855 !s->forbid_restart &&
1856 (s->restart == SERVICE_RESTART_ALWAYS ||
1857 (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
1858 (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
1859 (s->restart == SERVICE_RESTART_ON_WATCHDOG && s->result == SERVICE_FAILURE_WATCHDOG) ||
1860 (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL ||
1861 s->result == SERVICE_FAILURE_CORE_DUMP))) &&
1862 (s->result != SERVICE_FAILURE_EXIT_CODE ||
1863 !set_contains(s->restart_ignore_status.code, INT_TO_PTR(s->main_exec_status.status))) &&
1864 (s->result != SERVICE_FAILURE_SIGNAL ||
1865 !set_contains(s->restart_ignore_status.signal, INT_TO_PTR(s->main_exec_status.status)))) {
1867 r = service_arm_timer(s, s->restart_usec);
1871 service_set_state(s, SERVICE_AUTO_RESTART);
1874 s->forbid_restart = false;
1876 /* we want fresh tmpdirs in case service is started again immediately */
1877 exec_runtime_destroy(s->exec_runtime);
1878 s->exec_runtime = exec_runtime_unref(s->exec_runtime);
1880 /* Try to delete the pid file. At this point it will be
1881 * out-of-date, and some software might be confused by it, so
1882 * let's remove it. */
1884 unlink_noerrno(s->pid_file);
1889 log_warning_unit(UNIT(s)->id,
1890 "%s failed to run install restart timer: %s",
1891 UNIT(s)->id, strerror(-r));
1892 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
1895 static void service_enter_stop_post(Service *s, ServiceResult f) {
1899 if (f != SERVICE_SUCCESS)
1902 service_unwatch_control_pid(s);
1903 unit_watch_all_pids(UNIT(s));
1905 s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST];
1906 if (s->control_command) {
1907 s->control_command_id = SERVICE_EXEC_STOP_POST;
1909 r = service_spawn(s,
1913 !s->permissions_start_only,
1914 !s->root_directory_start_only,
1922 service_set_state(s, SERVICE_STOP_POST);
1924 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS);
1929 log_warning_unit(UNIT(s)->id,
1930 "%s failed to run 'stop-post' task: %s",
1931 UNIT(s)->id, strerror(-r));
1932 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
1935 static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
1940 if (f != SERVICE_SUCCESS)
1943 unit_watch_all_pids(UNIT(s));
1945 r = unit_kill_context(
1948 state != SERVICE_STOP_SIGTERM && state != SERVICE_FINAL_SIGTERM,
1957 if (s->timeout_stop_usec > 0) {
1958 r = service_arm_timer(s, s->timeout_stop_usec);
1963 service_set_state(s, state);
1964 } else if (state == SERVICE_STOP_SIGTERM)
1965 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS);
1966 else if (state == SERVICE_STOP_SIGKILL)
1967 service_enter_stop_post(s, SERVICE_SUCCESS);
1968 else if (state == SERVICE_FINAL_SIGTERM)
1969 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS);
1971 service_enter_dead(s, SERVICE_SUCCESS, true);
1976 log_warning_unit(UNIT(s)->id,
1977 "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
1979 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1980 service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
1982 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
1985 static void service_enter_stop(Service *s, ServiceResult f) {
1990 if (f != SERVICE_SUCCESS)
1993 service_unwatch_control_pid(s);
1994 unit_watch_all_pids(UNIT(s));
1996 s->control_command = s->exec_command[SERVICE_EXEC_STOP];
1997 if (s->control_command) {
1998 s->control_command_id = SERVICE_EXEC_STOP;
2000 r = service_spawn(s,
2004 !s->permissions_start_only,
2005 !s->root_directory_start_only,
2013 service_set_state(s, SERVICE_STOP);
2015 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2020 log_warning_unit(UNIT(s)->id,
2021 "%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
2022 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2025 static void service_enter_running(Service *s, ServiceResult f) {
2026 int main_pid_ok, cgroup_ok;
2029 if (f != SERVICE_SUCCESS)
2032 main_pid_ok = main_pid_good(s);
2033 cgroup_ok = cgroup_good(s);
2035 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2036 (s->bus_name_good || s->type != SERVICE_DBUS))
2037 service_set_state(s, SERVICE_RUNNING);
2038 else if (s->remain_after_exit)
2039 service_set_state(s, SERVICE_EXITED);
2041 service_enter_stop(s, SERVICE_SUCCESS);
2044 static void service_enter_start_post(Service *s) {
2048 service_unwatch_control_pid(s);
2049 service_reset_watchdog(s);
2051 s->control_command = s->exec_command[SERVICE_EXEC_START_POST];
2052 if (s->control_command) {
2053 s->control_command_id = SERVICE_EXEC_START_POST;
2055 r = service_spawn(s,
2059 !s->permissions_start_only,
2060 !s->root_directory_start_only,
2068 service_set_state(s, SERVICE_START_POST);
2070 service_enter_running(s, SERVICE_SUCCESS);
2075 log_warning_unit(UNIT(s)->id,
2076 "%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
2077 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2080 static void service_kill_control_processes(Service *s) {
2083 if (!UNIT(s)->cgroup_path)
2086 p = strappenda(UNIT(s)->cgroup_path, "/control");
2087 cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, p, SIGKILL, true, true, true, NULL);
2090 static void service_enter_start(Service *s) {
2097 assert(s->exec_command[SERVICE_EXEC_START]);
2098 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2100 service_unwatch_control_pid(s);
2101 service_unwatch_main_pid(s);
2103 /* We want to ensure that nobody leaks processes from
2104 * START_PRE here, so let's go on a killing spree, People
2105 * should not spawn long running processes from START_PRE. */
2106 service_kill_control_processes(s);
2108 if (s->type == SERVICE_FORKING) {
2109 s->control_command_id = SERVICE_EXEC_START;
2110 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2112 s->main_command = NULL;
2114 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2115 s->control_command = NULL;
2117 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2120 r = service_spawn(s,
2122 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS ||
2123 s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT,
2128 s->notify_access != NOTIFY_NONE,
2134 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) {
2135 /* For simple services we immediately start
2136 * the START_POST binaries. */
2138 service_set_main_pid(s, pid);
2139 service_enter_start_post(s);
2141 } else if (s->type == SERVICE_FORKING) {
2143 /* For forking services we wait until the start
2144 * process exited. */
2146 s->control_pid = pid;
2147 service_set_state(s, SERVICE_START);
2149 } else if (s->type == SERVICE_ONESHOT ||
2150 s->type == SERVICE_DBUS ||
2151 s->type == SERVICE_NOTIFY) {
2153 /* For oneshot services we wait until the start
2154 * process exited, too, but it is our main process. */
2156 /* For D-Bus services we know the main pid right away,
2157 * but wait for the bus name to appear on the
2158 * bus. Notify services are similar. */
2160 service_set_main_pid(s, pid);
2161 service_set_state(s, SERVICE_START);
2163 assert_not_reached("Unknown service type");
2168 log_warning_unit(UNIT(s)->id,
2169 "%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
2170 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2173 static void service_enter_start_pre(Service *s) {
2178 service_unwatch_control_pid(s);
2180 s->control_command = s->exec_command[SERVICE_EXEC_START_PRE];
2181 if (s->control_command) {
2182 /* Before we start anything, let's clear up what might
2183 * be left from previous runs. */
2184 service_kill_control_processes(s);
2186 s->control_command_id = SERVICE_EXEC_START_PRE;
2188 r = service_spawn(s,
2192 !s->permissions_start_only,
2193 !s->root_directory_start_only,
2201 service_set_state(s, SERVICE_START_PRE);
2203 service_enter_start(s);
2208 log_warning_unit(UNIT(s)->id,
2209 "%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
2210 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2213 static void service_enter_restart(Service *s) {
2214 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2219 if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) {
2220 /* Don't restart things if we are going down anyway */
2221 log_info_unit(UNIT(s)->id,
2222 "Stop job pending for unit, delaying automatic restart.");
2224 r = service_arm_timer(s, s->restart_usec);
2231 /* Any units that are bound to this service must also be
2232 * restarted. We use JOB_RESTART (instead of the more obvious
2233 * JOB_START) here so that those dependency jobs will be added
2235 r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL);
2239 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
2240 * it will be canceled as part of the service_stop() call that
2241 * is executed as part of JOB_RESTART. */
2243 log_debug_unit(UNIT(s)->id,
2244 "%s scheduled restart job.", UNIT(s)->id);
2248 log_warning_unit(UNIT(s)->id,
2249 "%s failed to schedule restart job: %s",
2250 UNIT(s)->id, bus_error_message(&error, -r));
2251 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
2254 static void service_enter_reload(Service *s) {
2259 service_unwatch_control_pid(s);
2261 s->control_command = s->exec_command[SERVICE_EXEC_RELOAD];
2262 if (s->control_command) {
2263 s->control_command_id = SERVICE_EXEC_RELOAD;
2265 r = service_spawn(s,
2269 !s->permissions_start_only,
2270 !s->root_directory_start_only,
2278 service_set_state(s, SERVICE_RELOAD);
2280 service_enter_running(s, SERVICE_SUCCESS);
2285 log_warning_unit(UNIT(s)->id,
2286 "%s failed to run 'reload' task: %s",
2287 UNIT(s)->id, strerror(-r));
2288 s->reload_result = SERVICE_FAILURE_RESOURCES;
2289 service_enter_running(s, SERVICE_SUCCESS);
2292 static void service_run_next_control(Service *s) {
2296 assert(s->control_command);
2297 assert(s->control_command->command_next);
2299 assert(s->control_command_id != SERVICE_EXEC_START);
2301 s->control_command = s->control_command->command_next;
2302 service_unwatch_control_pid(s);
2304 r = service_spawn(s,
2308 !s->permissions_start_only,
2309 !s->root_directory_start_only,
2310 s->control_command_id == SERVICE_EXEC_START_PRE ||
2311 s->control_command_id == SERVICE_EXEC_STOP_POST,
2321 log_warning_unit(UNIT(s)->id,
2322 "%s failed to run next control task: %s",
2323 UNIT(s)->id, strerror(-r));
2325 if (s->state == SERVICE_START_PRE)
2326 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2327 else if (s->state == SERVICE_STOP)
2328 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2329 else if (s->state == SERVICE_STOP_POST)
2330 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2331 else if (s->state == SERVICE_RELOAD) {
2332 s->reload_result = SERVICE_FAILURE_RESOURCES;
2333 service_enter_running(s, SERVICE_SUCCESS);
2335 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2338 static void service_run_next_main(Service *s) {
2343 assert(s->main_command);
2344 assert(s->main_command->command_next);
2345 assert(s->type == SERVICE_ONESHOT);
2347 s->main_command = s->main_command->command_next;
2348 service_unwatch_main_pid(s);
2350 r = service_spawn(s,
2357 s->notify_access != NOTIFY_NONE,
2363 service_set_main_pid(s, pid);
2368 log_warning_unit(UNIT(s)->id,
2369 "%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
2370 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2373 static int service_start_limit_test(Service *s) {
2376 if (ratelimit_test(&s->start_limit))
2379 switch (s->start_limit_action) {
2381 case SERVICE_START_LIMIT_NONE:
2382 log_warning_unit(UNIT(s)->id,
2383 "%s start request repeated too quickly, refusing to start.",
2387 case SERVICE_START_LIMIT_REBOOT: {
2388 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2391 log_warning_unit(UNIT(s)->id,
2392 "%s start request repeated too quickly, rebooting.", UNIT(s)->id);
2394 r = manager_add_job_by_name(UNIT(s)->manager, JOB_START,
2395 SPECIAL_REBOOT_TARGET, JOB_REPLACE,
2396 true, &error, NULL);
2398 log_error_unit(UNIT(s)->id,
2399 "Failed to reboot: %s.", bus_error_message(&error, r));
2404 case SERVICE_START_LIMIT_REBOOT_FORCE:
2405 log_warning_unit(UNIT(s)->id,
2406 "%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id);
2407 UNIT(s)->manager->exit_code = MANAGER_REBOOT;
2410 case SERVICE_START_LIMIT_REBOOT_IMMEDIATE:
2411 log_warning_unit(UNIT(s)->id,
2412 "%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id);
2414 reboot(RB_AUTOBOOT);
2418 log_error_unit(UNIT(s)->id,
2419 "start limit action=%i", s->start_limit_action);
2420 assert_not_reached("Unknown StartLimitAction.");
2426 static int service_start(Unit *u) {
2427 Service *s = SERVICE(u);
2432 /* We cannot fulfill this request right now, try again later
2434 if (s->state == SERVICE_STOP ||
2435 s->state == SERVICE_STOP_SIGTERM ||
2436 s->state == SERVICE_STOP_SIGKILL ||
2437 s->state == SERVICE_STOP_POST ||
2438 s->state == SERVICE_FINAL_SIGTERM ||
2439 s->state == SERVICE_FINAL_SIGKILL)
2442 /* Already on it! */
2443 if (s->state == SERVICE_START_PRE ||
2444 s->state == SERVICE_START ||
2445 s->state == SERVICE_START_POST)
2448 /* A service that will be restarted must be stopped first to
2449 * trigger BindsTo and/or OnFailure dependencies. If a user
2450 * does not want to wait for the holdoff time to elapse, the
2451 * service should be manually restarted, not started. We
2452 * simply return EAGAIN here, so that any start jobs stay
2453 * queued, and assume that the auto restart timer will
2454 * eventually trigger the restart. */
2455 if (s->state == SERVICE_AUTO_RESTART)
2458 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED);
2460 /* Make sure we don't enter a busy loop of some kind. */
2461 r = service_start_limit_test(s);
2463 service_enter_dead(s, SERVICE_FAILURE_START_LIMIT, false);
2467 s->result = SERVICE_SUCCESS;
2468 s->reload_result = SERVICE_SUCCESS;
2469 s->main_pid_known = false;
2470 s->main_pid_alien = false;
2471 s->forbid_restart = false;
2473 service_enter_start_pre(s);
2477 static int service_stop(Unit *u) {
2478 Service *s = SERVICE(u);
2482 /* Don't create restart jobs from here. */
2483 s->forbid_restart = true;
2486 if (s->state == SERVICE_STOP ||
2487 s->state == SERVICE_STOP_SIGTERM ||
2488 s->state == SERVICE_STOP_SIGKILL ||
2489 s->state == SERVICE_STOP_POST ||
2490 s->state == SERVICE_FINAL_SIGTERM ||
2491 s->state == SERVICE_FINAL_SIGKILL)
2494 /* A restart will be scheduled or is in progress. */
2495 if (s->state == SERVICE_AUTO_RESTART) {
2496 service_set_state(s, SERVICE_DEAD);
2500 /* If there's already something running we go directly into
2502 if (s->state == SERVICE_START_PRE ||
2503 s->state == SERVICE_START ||
2504 s->state == SERVICE_START_POST ||
2505 s->state == SERVICE_RELOAD) {
2506 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2510 assert(s->state == SERVICE_RUNNING ||
2511 s->state == SERVICE_EXITED);
2513 service_enter_stop(s, SERVICE_SUCCESS);
2517 static int service_reload(Unit *u) {
2518 Service *s = SERVICE(u);
2522 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2524 service_enter_reload(s);
2528 _pure_ static bool service_can_reload(Unit *u) {
2529 Service *s = SERVICE(u);
2533 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2536 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2537 Service *s = SERVICE(u);
2543 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2544 unit_serialize_item(u, f, "result", service_result_to_string(s->result));
2545 unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
2547 if (s->control_pid > 0)
2548 unit_serialize_item_format(u, f, "control-pid", PID_FMT,
2551 if (s->main_pid_known && s->main_pid > 0)
2552 unit_serialize_item_format(u, f, "main-pid", PID_FMT, s->main_pid);
2554 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2557 unit_serialize_item(u, f, "status-text", s->status_text);
2559 /* FIXME: There's a minor uncleanliness here: if there are
2560 * multiple commands attached here, we will start from the
2561 * first one again */
2562 if (s->control_command_id >= 0)
2563 unit_serialize_item(u, f, "control-command",
2564 service_exec_command_to_string(s->control_command_id));
2566 if (s->socket_fd >= 0) {
2569 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2572 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2575 if (s->main_exec_status.pid > 0) {
2576 unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT,
2577 s->main_exec_status.pid);
2578 dual_timestamp_serialize(f, "main-exec-status-start",
2579 &s->main_exec_status.start_timestamp);
2580 dual_timestamp_serialize(f, "main-exec-status-exit",
2581 &s->main_exec_status.exit_timestamp);
2583 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2584 unit_serialize_item_format(u, f, "main-exec-status-code", "%i",
2585 s->main_exec_status.code);
2586 unit_serialize_item_format(u, f, "main-exec-status-status", "%i",
2587 s->main_exec_status.status);
2590 if (dual_timestamp_is_set(&s->watchdog_timestamp))
2591 dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
2593 if (s->forbid_restart)
2594 unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart));
2599 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2600 Service *s = SERVICE(u);
2607 if (streq(key, "state")) {
2610 state = service_state_from_string(value);
2612 log_debug_unit(u->id, "Failed to parse state value %s", value);
2614 s->deserialized_state = state;
2615 } else if (streq(key, "result")) {
2618 f = service_result_from_string(value);
2620 log_debug_unit(u->id, "Failed to parse result value %s", value);
2621 else if (f != SERVICE_SUCCESS)
2624 } else if (streq(key, "reload-result")) {
2627 f = service_result_from_string(value);
2629 log_debug_unit(u->id, "Failed to parse reload result value %s", value);
2630 else if (f != SERVICE_SUCCESS)
2631 s->reload_result = f;
2633 } else if (streq(key, "control-pid")) {
2636 if (parse_pid(value, &pid) < 0)
2637 log_debug_unit(u->id, "Failed to parse control-pid value %s", value);
2639 s->control_pid = pid;
2640 } else if (streq(key, "main-pid")) {
2643 if (parse_pid(value, &pid) < 0)
2644 log_debug_unit(u->id, "Failed to parse main-pid value %s", value);
2646 service_set_main_pid(s, pid);
2647 unit_watch_pid(UNIT(s), pid);
2649 } else if (streq(key, "main-pid-known")) {
2652 b = parse_boolean(value);
2654 log_debug_unit(u->id, "Failed to parse main-pid-known value %s", value);
2656 s->main_pid_known = b;
2657 } else if (streq(key, "status-text")) {
2664 free(s->status_text);
2668 } else if (streq(key, "control-command")) {
2669 ServiceExecCommand id;
2671 id = service_exec_command_from_string(value);
2673 log_debug_unit(u->id, "Failed to parse exec-command value %s", value);
2675 s->control_command_id = id;
2676 s->control_command = s->exec_command[id];
2678 } else if (streq(key, "socket-fd")) {
2681 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2682 log_debug_unit(u->id, "Failed to parse socket-fd value %s", value);
2685 if (s->socket_fd >= 0)
2686 close_nointr_nofail(s->socket_fd);
2687 s->socket_fd = fdset_remove(fds, fd);
2689 } else if (streq(key, "main-exec-status-pid")) {
2692 if (parse_pid(value, &pid) < 0)
2693 log_debug_unit(u->id, "Failed to parse main-exec-status-pid value %s", value);
2695 s->main_exec_status.pid = pid;
2696 } else if (streq(key, "main-exec-status-code")) {
2699 if (safe_atoi(value, &i) < 0)
2700 log_debug_unit(u->id, "Failed to parse main-exec-status-code value %s", value);
2702 s->main_exec_status.code = i;
2703 } else if (streq(key, "main-exec-status-status")) {
2706 if (safe_atoi(value, &i) < 0)
2707 log_debug_unit(u->id, "Failed to parse main-exec-status-status value %s", value);
2709 s->main_exec_status.status = i;
2710 } else if (streq(key, "main-exec-status-start"))
2711 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2712 else if (streq(key, "main-exec-status-exit"))
2713 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2714 else if (streq(key, "watchdog-timestamp"))
2715 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
2716 else if (streq(key, "forbid-restart")) {
2719 b = parse_boolean(value);
2721 log_debug_unit(u->id, "Failed to parse forbid-restart value %s", value);
2723 s->forbid_restart = b;
2725 log_debug_unit(u->id, "Unknown serialization key '%s'", key);
2730 _pure_ static UnitActiveState service_active_state(Unit *u) {
2731 const UnitActiveState *table;
2735 table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
2737 return table[SERVICE(u)->state];
2740 static const char *service_sub_state_to_string(Unit *u) {
2743 return service_state_to_string(SERVICE(u)->state);
2746 static bool service_check_gc(Unit *u) {
2747 Service *s = SERVICE(u);
2751 /* Never clean up services that still have a process around,
2752 * even if the service is formally dead. */
2753 if (cgroup_good(s) > 0 ||
2754 main_pid_good(s) > 0 ||
2755 control_pid_good(s) > 0)
2758 #ifdef HAVE_SYSV_COMPAT
2766 _pure_ static bool service_check_snapshot(Unit *u) {
2767 Service *s = SERVICE(u);
2771 return (s->socket_fd < 0);
2774 static int service_retry_pid_file(Service *s) {
2777 assert(s->pid_file);
2778 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2780 r = service_load_pid_file(s, false);
2784 service_unwatch_pid_file(s);
2786 service_enter_running(s, SERVICE_SUCCESS);
2790 static int service_watch_pid_file(Service *s) {
2793 log_debug_unit(UNIT(s)->id,
2794 "Setting watch for %s's PID file %s",
2795 UNIT(s)->id, s->pid_file_pathspec->path);
2796 r = path_spec_watch(s->pid_file_pathspec, service_dispatch_io);
2800 /* the pidfile might have appeared just before we set the watch */
2801 log_debug_unit(UNIT(s)->id,
2802 "Trying to read %s's PID file %s in case it changed",
2803 UNIT(s)->id, s->pid_file_pathspec->path);
2804 service_retry_pid_file(s);
2808 log_error_unit(UNIT(s)->id,
2809 "Failed to set a watch for %s's PID file %s: %s",
2810 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
2811 service_unwatch_pid_file(s);
2815 static int service_demand_pid_file(Service *s) {
2818 assert(s->pid_file);
2819 assert(!s->pid_file_pathspec);
2821 ps = new0(PathSpec, 1);
2826 ps->path = strdup(s->pid_file);
2832 path_kill_slashes(ps->path);
2834 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2835 * keep their PID file open all the time. */
2836 ps->type = PATH_MODIFIED;
2837 ps->inotify_fd = -1;
2839 s->pid_file_pathspec = ps;
2841 return service_watch_pid_file(s);
2844 static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata) {
2845 PathSpec *p = userdata;
2850 s = SERVICE(p->unit);
2854 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2855 assert(s->pid_file_pathspec);
2856 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2858 log_debug_unit(UNIT(s)->id, "inotify event for %s", UNIT(s)->id);
2860 if (path_spec_fd_event(p, events) < 0)
2863 if (service_retry_pid_file(s) == 0)
2866 if (service_watch_pid_file(s) < 0)
2872 service_unwatch_pid_file(s);
2873 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2877 static void service_notify_cgroup_empty_event(Unit *u) {
2878 Service *s = SERVICE(u);
2882 log_debug_unit(u->id, "%s: cgroup is empty", u->id);
2886 /* Waiting for SIGCHLD is usually more interesting,
2887 * because it includes return codes/signals. Which is
2888 * why we ignore the cgroup events for most cases,
2889 * except when we don't know pid which to expect the
2893 case SERVICE_START_POST:
2894 /* If we were hoping for the daemon to write its PID file,
2895 * we can give up now. */
2896 if (s->pid_file_pathspec) {
2897 log_warning_unit(u->id,
2898 "%s never wrote its PID file. Failing.", UNIT(s)->id);
2899 service_unwatch_pid_file(s);
2900 if (s->state == SERVICE_START)
2901 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2903 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2907 case SERVICE_RUNNING:
2908 /* service_enter_running() will figure out what to do */
2909 service_enter_running(s, SERVICE_SUCCESS);
2912 case SERVICE_STOP_SIGTERM:
2913 case SERVICE_STOP_SIGKILL:
2915 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2916 service_enter_stop_post(s, SERVICE_SUCCESS);
2920 case SERVICE_STOP_POST:
2921 case SERVICE_FINAL_SIGTERM:
2922 case SERVICE_FINAL_SIGKILL:
2923 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2924 service_enter_dead(s, SERVICE_SUCCESS, true);
2933 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2934 Service *s = SERVICE(u);
2940 if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) :
2941 is_clean_exit_lsb(code, status, &s->success_status))
2942 f = SERVICE_SUCCESS;
2943 else if (code == CLD_EXITED)
2944 f = SERVICE_FAILURE_EXIT_CODE;
2945 else if (code == CLD_KILLED)
2946 f = SERVICE_FAILURE_SIGNAL;
2947 else if (code == CLD_DUMPED)
2948 f = SERVICE_FAILURE_CORE_DUMP;
2950 assert_not_reached("Unknown code");
2952 if (s->main_pid == pid) {
2953 /* Forking services may occasionally move to a new PID.
2954 * As long as they update the PID file before exiting the old
2955 * PID, they're fine. */
2956 if (service_load_pid_file(s, false) == 0)
2960 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2962 if (s->main_command) {
2963 /* If this is not a forking service than the
2964 * main process got started and hence we copy
2965 * the exit status so that it is recorded both
2966 * as main and as control process exit
2969 s->main_command->exec_status = s->main_exec_status;
2971 if (s->main_command->ignore)
2972 f = SERVICE_SUCCESS;
2973 } else if (s->exec_command[SERVICE_EXEC_START]) {
2975 /* If this is a forked process, then we should
2976 * ignore the return value if this was
2977 * configured for the starter process */
2979 if (s->exec_command[SERVICE_EXEC_START]->ignore)
2980 f = SERVICE_SUCCESS;
2983 log_struct_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2985 "MESSAGE=%s: main process exited, code=%s, status=%i/%s",
2986 u->id, sigchld_code_to_string(code), status,
2987 strna(code == CLD_EXITED
2988 ? exit_status_to_string(status, EXIT_STATUS_FULL)
2989 : signal_to_string(status)),
2990 "EXIT_CODE=%s", sigchld_code_to_string(code),
2991 "EXIT_STATUS=%i", status,
2994 if (f != SERVICE_SUCCESS)
2997 if (s->main_command &&
2998 s->main_command->command_next &&
2999 f == SERVICE_SUCCESS) {
3001 /* There is another command to *
3002 * execute, so let's do that. */
3004 log_debug_unit(u->id,
3005 "%s running next main command for state %s",
3006 u->id, service_state_to_string(s->state));
3007 service_run_next_main(s);
3011 /* The service exited, so the service is officially
3013 s->main_command = NULL;
3017 case SERVICE_START_POST:
3018 case SERVICE_RELOAD:
3020 /* Need to wait until the operation is
3025 if (s->type == SERVICE_ONESHOT) {
3026 /* This was our main goal, so let's go on */
3027 if (f == SERVICE_SUCCESS)
3028 service_enter_start_post(s);
3030 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3036 case SERVICE_RUNNING:
3037 service_enter_running(s, f);
3040 case SERVICE_STOP_SIGTERM:
3041 case SERVICE_STOP_SIGKILL:
3043 if (!control_pid_good(s))
3044 service_enter_stop_post(s, f);
3046 /* If there is still a control process, wait for that first */
3049 case SERVICE_STOP_POST:
3050 case SERVICE_FINAL_SIGTERM:
3051 case SERVICE_FINAL_SIGKILL:
3053 if (!control_pid_good(s))
3054 service_enter_dead(s, f, true);
3058 assert_not_reached("Uh, main process died at wrong time.");
3062 } else if (s->control_pid == pid) {
3065 if (s->control_command) {
3066 exec_status_exit(&s->control_command->exec_status,
3067 &s->exec_context, pid, code, status);
3069 if (s->control_command->ignore)
3070 f = SERVICE_SUCCESS;
3073 log_full_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, u->id,
3074 "%s: control process exited, code=%s status=%i",
3075 u->id, sigchld_code_to_string(code), status);
3077 if (f != SERVICE_SUCCESS)
3080 /* Immediately get rid of the cgroup, so that the
3081 * kernel doesn't delay the cgroup empty messages for
3082 * the service cgroup any longer than necessary */
3083 service_kill_control_processes(s);
3085 if (s->control_command &&
3086 s->control_command->command_next &&
3087 f == SERVICE_SUCCESS) {
3089 /* There is another command to *
3090 * execute, so let's do that. */
3092 log_debug_unit(u->id,
3093 "%s running next control command for state %s",
3094 u->id, service_state_to_string(s->state));
3095 service_run_next_control(s);
3098 /* No further commands for this step, so let's
3099 * figure out what to do next */
3101 s->control_command = NULL;
3102 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
3104 log_debug_unit(u->id,
3105 "%s got final SIGCHLD for state %s",
3106 u->id, service_state_to_string(s->state));
3110 case SERVICE_START_PRE:
3111 if (f == SERVICE_SUCCESS)
3112 service_enter_start(s);
3114 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3118 if (s->type != SERVICE_FORKING)
3119 /* Maybe spurious event due to a reload that changed the type? */
3122 if (f != SERVICE_SUCCESS) {
3123 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3128 bool has_start_post;
3131 /* Let's try to load the pid file here if we can.
3132 * The PID file might actually be created by a START_POST
3133 * script. In that case don't worry if the loading fails. */
3135 has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
3136 r = service_load_pid_file(s, !has_start_post);
3137 if (!has_start_post && r < 0) {
3138 r = service_demand_pid_file(s);
3139 if (r < 0 || !cgroup_good(s))
3140 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3144 service_search_main_pid(s);
3146 service_enter_start_post(s);
3149 case SERVICE_START_POST:
3150 if (f != SERVICE_SUCCESS) {
3151 service_enter_stop(s, f);
3158 r = service_load_pid_file(s, true);
3160 r = service_demand_pid_file(s);
3161 if (r < 0 || !cgroup_good(s))
3162 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3166 service_search_main_pid(s);
3168 service_enter_running(s, SERVICE_SUCCESS);
3171 case SERVICE_RELOAD:
3172 if (f == SERVICE_SUCCESS) {
3173 service_load_pid_file(s, true);
3174 service_search_main_pid(s);
3177 s->reload_result = f;
3178 service_enter_running(s, SERVICE_SUCCESS);
3182 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
3185 case SERVICE_STOP_SIGTERM:
3186 case SERVICE_STOP_SIGKILL:
3187 if (main_pid_good(s) <= 0)
3188 service_enter_stop_post(s, f);
3190 /* If there is still a service
3191 * process around, wait until
3192 * that one quit, too */
3195 case SERVICE_STOP_POST:
3196 case SERVICE_FINAL_SIGTERM:
3197 case SERVICE_FINAL_SIGKILL:
3198 if (main_pid_good(s) <= 0)
3199 service_enter_dead(s, f, true);
3203 assert_not_reached("Uh, control process died at wrong time.");
3208 /* Notify clients about changed exit status */
3209 unit_add_to_dbus_queue(u);
3211 /* We got one SIGCHLD for the service, let's watch all
3212 * processes that are now running of the service, and watch
3213 * that. Among the PIDs we then watch will be children
3214 * reassigned to us, which hopefully allows us to identify
3215 * when all children are gone */
3216 unit_tidy_watch_pids(u, s->main_pid, s->control_pid);
3217 unit_watch_all_pids(u);
3219 /* If the PID set is empty now, then let's finish this off */
3220 if (set_isempty(u->pids))
3221 service_notify_cgroup_empty_event(u);
3224 static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) {
3225 Service *s = SERVICE(userdata);
3228 assert(source == s->timer_event_source);
3232 case SERVICE_START_PRE:
3234 log_warning_unit(UNIT(s)->id,
3235 "%s %s operation timed out. Terminating.",
3237 s->state == SERVICE_START ? "start" : "start-pre");
3238 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3241 case SERVICE_START_POST:
3242 log_warning_unit(UNIT(s)->id,
3243 "%s start-post operation timed out. Stopping.", UNIT(s)->id);
3244 service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
3247 case SERVICE_RELOAD:
3248 log_warning_unit(UNIT(s)->id,
3249 "%s reload operation timed out. Stopping.", UNIT(s)->id);
3250 s->reload_result = SERVICE_FAILURE_TIMEOUT;
3251 service_enter_running(s, SERVICE_SUCCESS);
3255 log_warning_unit(UNIT(s)->id,
3256 "%s stopping timed out. Terminating.", UNIT(s)->id);
3257 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3260 case SERVICE_STOP_SIGTERM:
3261 if (s->kill_context.send_sigkill) {
3262 log_warning_unit(UNIT(s)->id,
3263 "%s stop-sigterm timed out. Killing.", UNIT(s)->id);
3264 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3266 log_warning_unit(UNIT(s)->id,
3267 "%s stop-sigterm timed out. Skipping SIGKILL.", UNIT(s)->id);
3268 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3273 case SERVICE_STOP_SIGKILL:
3274 /* Uh, we sent a SIGKILL and it is still not gone?
3275 * Must be something we cannot kill, so let's just be
3276 * weirded out and continue */
3278 log_warning_unit(UNIT(s)->id,
3279 "%s still around after SIGKILL. Ignoring.", UNIT(s)->id);
3280 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3283 case SERVICE_STOP_POST:
3284 log_warning_unit(UNIT(s)->id,
3285 "%s stop-post timed out. Terminating.", UNIT(s)->id);
3286 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3289 case SERVICE_FINAL_SIGTERM:
3290 if (s->kill_context.send_sigkill) {
3291 log_warning_unit(UNIT(s)->id,
3292 "%s stop-final-sigterm timed out. Killing.", UNIT(s)->id);
3293 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3295 log_warning_unit(UNIT(s)->id,
3296 "%s stop-final-sigterm timed out. Skipping SIGKILL. Entering failed mode.",
3298 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
3303 case SERVICE_FINAL_SIGKILL:
3304 log_warning_unit(UNIT(s)->id,
3305 "%s still around after final SIGKILL. Entering failed mode.", UNIT(s)->id);
3306 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
3309 case SERVICE_AUTO_RESTART:
3310 log_info_unit(UNIT(s)->id,
3311 s->restart_usec > 0 ?
3312 "%s holdoff time over, scheduling restart." :
3313 "%s has no holdoff time, scheduling restart.",
3315 service_enter_restart(s);
3319 assert_not_reached("Timeout at wrong time.");
3325 static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) {
3326 Service *s = SERVICE(userdata);
3329 assert(source == s->watchdog_event_source);
3331 log_error_unit(UNIT(s)->id, "%s watchdog timeout!", UNIT(s)->id);
3332 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_WATCHDOG);
3337 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3338 Service *s = SERVICE(u);
3340 bool notify_dbus = false;
3344 log_debug_unit(u->id, "%s: Got notification message from PID "PID_FMT" (%s...)",
3345 u->id, pid, tags && *tags ? tags[0] : "(empty)");
3347 if (s->notify_access == NOTIFY_NONE) {
3348 log_warning_unit(u->id,
3349 "%s: Got notification message from PID "PID_FMT", but reception is disabled.",
3354 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3356 if (s->main_pid != 0)
3357 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);
3359 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);
3363 /* Interpret MAINPID= */
3364 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3365 (s->state == SERVICE_START ||
3366 s->state == SERVICE_START_POST ||
3367 s->state == SERVICE_RUNNING ||
3368 s->state == SERVICE_RELOAD)) {
3370 if (parse_pid(e + 8, &pid) < 0)
3371 log_warning_unit(u->id, "Failed to parse notification message %s", e);
3373 log_debug_unit(u->id, "%s: got %s", u->id, e);
3374 service_set_main_pid(s, pid);
3375 unit_watch_pid(UNIT(s), pid);
3380 /* Interpret READY= */
3381 if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START && strv_find(tags, "READY=1")) {
3382 log_debug_unit(u->id, "%s: got READY=1", u->id);
3383 service_enter_start_post(s);
3387 /* Interpret STATUS= */
3388 e = strv_find_prefix(tags, "STATUS=");
3393 if (!utf8_is_valid(e+7)) {
3394 log_warning_unit(u->id, "Status message in notification is not UTF-8 clean.");
3398 log_debug_unit(u->id, "%s: got %s", u->id, e);
3409 if (!streq_ptr(s->status_text, t)) {
3410 free(s->status_text);
3417 /* Interpet WATCHDOG= */
3418 if (strv_find(tags, "WATCHDOG=1")) {
3419 log_debug_unit(u->id, "%s: got WATCHDOG=1", u->id);
3420 service_reset_watchdog(s);
3423 /* Notify clients about changed status or main pid */
3425 unit_add_to_dbus_queue(u);
3428 static int service_get_timeout(Unit *u, uint64_t *timeout) {
3429 Service *s = SERVICE(u);
3432 if (!s->timer_event_source)
3435 r = sd_event_source_get_time(s->timer_event_source, timeout);
3442 #ifdef HAVE_SYSV_COMPAT
3444 static int service_enumerate(Manager *m) {
3447 _cleanup_closedir_ DIR *d = NULL;
3448 _cleanup_free_ char *path = NULL, *fpath = NULL, *name = NULL;
3449 Set *runlevel_services[ELEMENTSOF(rcnd_table)] = {};
3450 _cleanup_set_free_ Set *shutdown_services = NULL;
3457 if (m->running_as != SYSTEMD_SYSTEM)
3460 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3461 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3465 path = strjoin(*p, "/", rcnd_table[i].path, NULL);
3476 if (errno != ENOENT)
3477 log_warning("opendir(%s) failed: %m", path);
3482 while ((de = readdir(d))) {
3485 if (ignore_file(de->d_name))
3488 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3491 if (strlen(de->d_name) < 4)
3494 a = undecchar(de->d_name[1]);
3495 b = undecchar(de->d_name[2]);
3501 fpath = strjoin(path, "/", de->d_name, NULL);
3507 if (access(fpath, X_OK) < 0) {
3509 if (errno != ENOENT)
3510 log_warning("access() failed on %s: %m", fpath);
3516 name = sysv_translate_name(de->d_name + 3);
3522 r = manager_load_unit_prepare(m, name, NULL, NULL, &service);
3524 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3528 if (de->d_name[0] == 'S') {
3530 if (rcnd_table[i].type == RUNLEVEL_UP) {
3531 SERVICE(service)->sysv_start_priority_from_rcnd =
3532 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3534 SERVICE(service)->sysv_enabled = true;
3537 r = set_ensure_allocated(&runlevel_services[i],
3538 trivial_hash_func, trivial_compare_func);
3542 r = set_put(runlevel_services[i], service);
3546 } else if (de->d_name[0] == 'K' &&
3547 (rcnd_table[i].type == RUNLEVEL_DOWN)) {
3549 r = set_ensure_allocated(&shutdown_services,
3550 trivial_hash_func, trivial_compare_func);
3554 r = set_put(shutdown_services, service);
3561 /* Now we loaded all stubs and are aware of the lowest
3562 start-up priority for all services, not let's actually load
3563 the services, this will also tell us which services are
3564 actually native now */
3565 manager_dispatch_load_queue(m);
3567 /* If this is a native service, rely on native ways to pull in
3568 * a service, don't pull it in via sysv rcN.d links. */
3569 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3570 SET_FOREACH(service, runlevel_services[i], j) {
3571 service = unit_follow_merge(service);
3573 if (service->fragment_path)
3576 r = unit_add_two_dependencies_by_name_inverse(
3577 service, UNIT_AFTER, UNIT_WANTS,
3578 rcnd_table[i].target, NULL, true);
3583 /* We honour K links only for halt/reboot. For the normal
3584 * runlevels we assume the stop jobs will be implicitly added
3585 * by the core logic. Also, we don't really distinguish here
3586 * between the runlevels 0 and 6 and just add them to the
3587 * special shutdown target. */
3588 SET_FOREACH(service, shutdown_services, j) {
3589 service = unit_follow_merge(service);
3591 if (service->fragment_path)
3594 r = unit_add_two_dependencies_by_name(
3595 service, UNIT_BEFORE, UNIT_CONFLICTS,
3596 SPECIAL_SHUTDOWN_TARGET, NULL, true);
3605 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3606 set_free(runlevel_services[i]);
3612 static void service_bus_name_owner_change(
3615 const char *old_owner,
3616 const char *new_owner) {
3618 Service *s = SERVICE(u);
3624 assert(streq(s->bus_name, name));
3625 assert(old_owner || new_owner);
3627 if (old_owner && new_owner)
3628 log_debug_unit(u->id,
3629 "%s's D-Bus name %s changed owner from %s to %s",
3630 u->id, name, old_owner, new_owner);
3632 log_debug_unit(u->id,
3633 "%s's D-Bus name %s no longer registered by %s",
3634 u->id, name, old_owner);
3636 log_debug_unit(u->id,
3637 "%s's D-Bus name %s now registered by %s",
3638 u->id, name, new_owner);
3640 s->bus_name_good = !!new_owner;
3642 if (s->type == SERVICE_DBUS) {
3644 /* service_enter_running() will figure out what to
3646 if (s->state == SERVICE_RUNNING)
3647 service_enter_running(s, SERVICE_SUCCESS);
3648 else if (s->state == SERVICE_START && new_owner)
3649 service_enter_start_post(s);
3651 } else if (new_owner &&
3653 (s->state == SERVICE_START ||
3654 s->state == SERVICE_START_POST ||
3655 s->state == SERVICE_RUNNING ||
3656 s->state == SERVICE_RELOAD)) {
3658 _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
3661 /* Try to acquire PID from bus service */
3663 r = sd_bus_get_owner(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds);
3665 r = sd_bus_creds_get_pid(creds, &pid);
3667 log_debug_unit(u->id, "%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
3669 service_set_main_pid(s, pid);
3670 unit_watch_pid(UNIT(s), pid);
3675 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3676 _cleanup_free_ char *peer = NULL;
3682 /* This is called by the socket code when instantiating a new
3683 * service for a stream socket and the socket needs to be
3686 if (UNIT(s)->load_state != UNIT_LOADED)
3689 if (s->socket_fd >= 0)
3692 if (s->state != SERVICE_DEAD)
3695 if (getpeername_pretty(fd, &peer) >= 0) {
3697 if (UNIT(s)->description) {
3698 _cleanup_free_ char *a;
3700 a = strjoin(UNIT(s)->description, " (", peer, ")", NULL);
3704 r = unit_set_description(UNIT(s), a);
3706 r = unit_set_description(UNIT(s), peer);
3714 unit_ref_set(&s->accept_socket, UNIT(sock));
3716 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3719 static void service_reset_failed(Unit *u) {
3720 Service *s = SERVICE(u);
3724 if (s->state == SERVICE_FAILED)
3725 service_set_state(s, SERVICE_DEAD);
3727 s->result = SERVICE_SUCCESS;
3728 s->reload_result = SERVICE_SUCCESS;
3730 RATELIMIT_RESET(s->start_limit);
3733 static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) {
3734 Service *s = SERVICE(u);
3736 return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error);
3739 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3740 [SERVICE_DEAD] = "dead",
3741 [SERVICE_START_PRE] = "start-pre",
3742 [SERVICE_START] = "start",
3743 [SERVICE_START_POST] = "start-post",
3744 [SERVICE_RUNNING] = "running",
3745 [SERVICE_EXITED] = "exited",
3746 [SERVICE_RELOAD] = "reload",
3747 [SERVICE_STOP] = "stop",
3748 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3749 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3750 [SERVICE_STOP_POST] = "stop-post",
3751 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3752 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3753 [SERVICE_FAILED] = "failed",
3754 [SERVICE_AUTO_RESTART] = "auto-restart",
3757 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3759 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3760 [SERVICE_RESTART_NO] = "no",
3761 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3762 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3763 [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog",
3764 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3765 [SERVICE_RESTART_ALWAYS] = "always"
3768 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3770 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3771 [SERVICE_SIMPLE] = "simple",
3772 [SERVICE_FORKING] = "forking",
3773 [SERVICE_ONESHOT] = "oneshot",
3774 [SERVICE_DBUS] = "dbus",
3775 [SERVICE_NOTIFY] = "notify",
3776 [SERVICE_IDLE] = "idle"
3779 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3781 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3782 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3783 [SERVICE_EXEC_START] = "ExecStart",
3784 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3785 [SERVICE_EXEC_RELOAD] = "ExecReload",
3786 [SERVICE_EXEC_STOP] = "ExecStop",
3787 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3790 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3792 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3793 [NOTIFY_NONE] = "none",
3794 [NOTIFY_MAIN] = "main",
3795 [NOTIFY_ALL] = "all"
3798 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3800 static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
3801 [SERVICE_SUCCESS] = "success",
3802 [SERVICE_FAILURE_RESOURCES] = "resources",
3803 [SERVICE_FAILURE_TIMEOUT] = "timeout",
3804 [SERVICE_FAILURE_EXIT_CODE] = "exit-code",
3805 [SERVICE_FAILURE_SIGNAL] = "signal",
3806 [SERVICE_FAILURE_CORE_DUMP] = "core-dump",
3807 [SERVICE_FAILURE_WATCHDOG] = "watchdog",
3808 [SERVICE_FAILURE_START_LIMIT] = "start-limit"
3811 DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
3813 static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = {
3814 [SERVICE_START_LIMIT_NONE] = "none",
3815 [SERVICE_START_LIMIT_REBOOT] = "reboot",
3816 [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force",
3817 [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate"
3819 DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction);
3821 const UnitVTable service_vtable = {
3822 .object_size = sizeof(Service),
3823 .exec_context_offset = offsetof(Service, exec_context),
3824 .cgroup_context_offset = offsetof(Service, cgroup_context),
3825 .kill_context_offset = offsetof(Service, kill_context),
3826 .exec_runtime_offset = offsetof(Service, exec_runtime),
3832 .private_section = "Service",
3834 .init = service_init,
3835 .done = service_done,
3836 .load = service_load,
3838 .coldplug = service_coldplug,
3840 .dump = service_dump,
3842 .start = service_start,
3843 .stop = service_stop,
3844 .reload = service_reload,
3846 .can_reload = service_can_reload,
3848 .kill = service_kill,
3850 .serialize = service_serialize,
3851 .deserialize_item = service_deserialize_item,
3853 .active_state = service_active_state,
3854 .sub_state_to_string = service_sub_state_to_string,
3856 .check_gc = service_check_gc,
3857 .check_snapshot = service_check_snapshot,
3859 .sigchld_event = service_sigchld_event,
3861 .reset_failed = service_reset_failed,
3863 .notify_cgroup_empty = service_notify_cgroup_empty_event,
3864 .notify_message = service_notify_message,
3866 .bus_name_owner_change = service_bus_name_owner_change,
3868 .bus_interface = "org.freedesktop.systemd1.Service",
3869 .bus_vtable = bus_service_vtable,
3870 .bus_set_property = bus_service_set_property,
3871 .bus_commit_properties = bus_service_commit_properties,
3873 .get_timeout = service_get_timeout,
3875 #ifdef HAVE_SYSV_COMPAT
3876 .enumerate = service_enumerate,
3879 .can_transient = true,
3881 .status_message_formats = {
3882 .starting_stopping = {
3883 [0] = "Starting %s...",
3884 [1] = "Stopping %s...",
3886 .finished_start_job = {
3887 [JOB_DONE] = "Started %s.",
3888 [JOB_FAILED] = "Failed to start %s.",
3889 [JOB_DEPENDENCY] = "Dependency failed for %s.",
3890 [JOB_TIMEOUT] = "Timed out starting %s.",
3892 .finished_stop_job = {
3893 [JOB_DONE] = "Stopped %s.",
3894 [JOB_FAILED] = "Stopped (with error) %s.",
3895 [JOB_TIMEOUT] = "Timed out stopping %s.",