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_timestamp.monotonic + s->watchdog_usec, 0, service_dispatch_watchdog, s, &s->watchdog_event_source);
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, now(CLOCK_MONOTONIC) + usec, 0, service_dispatch_timer, s, &s->timer_event_source);
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 (kill(pid, 0) < 0 && errno != EPERM) {
1373 log_info_unit(UNIT(s)->id,
1374 "PID "PID_FMT" read from file %s does not exist.",
1379 if (s->main_pid_known) {
1380 if (pid == s->main_pid)
1383 log_debug_unit(UNIT(s)->id,
1384 "Main PID changing: "PID_FMT" -> "PID_FMT,
1386 service_unwatch_main_pid(s);
1387 s->main_pid_known = false;
1389 log_debug_unit(UNIT(s)->id,
1390 "Main PID loaded: "PID_FMT, pid);
1392 r = service_set_main_pid(s, pid);
1396 r = unit_watch_pid(UNIT(s), pid);
1398 /* FIXME: we need to do something here */
1399 log_warning_unit(UNIT(s)->id,
1400 "Failed to watch PID "PID_FMT" from service %s",
1408 static int service_search_main_pid(Service *s) {
1414 /* If we know it anyway, don't ever fallback to unreliable
1416 if (s->main_pid_known)
1419 if (!s->guess_main_pid)
1422 assert(s->main_pid <= 0);
1424 pid = unit_search_main_pid(UNIT(s));
1428 log_debug_unit(UNIT(s)->id,
1429 "Main PID guessed: "PID_FMT, pid);
1430 r = service_set_main_pid(s, pid);
1434 r = unit_watch_pid(UNIT(s), pid);
1436 /* FIXME: we need to do something here */
1437 log_warning_unit(UNIT(s)->id,
1438 "Failed to watch PID "PID_FMT" from service %s",
1445 static void service_set_state(Service *s, ServiceState state) {
1446 ServiceState old_state;
1447 const UnitActiveState *table;
1451 table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
1453 old_state = s->state;
1456 service_unwatch_pid_file(s);
1459 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1461 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1463 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL,
1464 SERVICE_AUTO_RESTART))
1465 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1468 SERVICE_START, SERVICE_START_POST,
1469 SERVICE_RUNNING, SERVICE_RELOAD,
1470 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1472 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1473 service_unwatch_main_pid(s);
1474 s->main_command = NULL;
1478 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1480 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1482 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1483 service_unwatch_control_pid(s);
1484 s->control_command = NULL;
1485 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
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_valid(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_valid(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_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
1591 service_start_watchdog(s);
1593 service_set_state(s, s->deserialized_state);
1599 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1603 unsigned rn_fds = 0;
1610 if (s->socket_fd >= 0)
1613 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
1618 if (u->type != UNIT_SOCKET)
1623 r = socket_collect_fds(sock, &cfds, &cn_fds);
1636 t = new(int, rn_fds+cn_fds);
1643 memcpy(t, rfds, rn_fds * sizeof(int));
1644 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1649 rn_fds = rn_fds+cn_fds;
1664 static int service_spawn(
1669 bool apply_permissions,
1671 bool apply_tty_stdin,
1672 bool set_notify_socket,
1679 _cleanup_free_ int *fdsbuf = NULL;
1680 unsigned n_fds = 0, n_env = 0;
1681 _cleanup_strv_free_ char
1682 **argv = NULL, **final_env = NULL, **our_env = NULL;
1689 unit_realize_cgroup(UNIT(s));
1691 r = unit_setup_exec_runtime(UNIT(s));
1696 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1697 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1698 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1700 if (s->socket_fd >= 0) {
1701 fds = &s->socket_fd;
1704 r = service_collect_fds(s, &fdsbuf, &n_fds);
1712 if (timeout && s->timeout_start_usec > 0) {
1713 r = service_arm_timer(s, s->timeout_start_usec);
1717 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1719 r = unit_full_printf_strv(UNIT(s), c->argv, &argv);
1723 our_env = new0(char*, 4);
1729 if (set_notify_socket)
1730 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
1735 if (s->main_pid > 0)
1736 if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) {
1741 if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM)
1742 if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid()) < 0) {
1747 final_env = strv_env_merge(2, UNIT(s)->manager->environment, our_env, NULL);
1753 if (is_control && UNIT(s)->cgroup_path) {
1754 path = strappenda(UNIT(s)->cgroup_path, "/control");
1755 cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
1757 path = UNIT(s)->cgroup_path;
1767 UNIT(s)->manager->confirm_spawn,
1768 UNIT(s)->manager->cgroup_supported,
1772 s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL,
1778 r = unit_watch_pid(UNIT(s), pid);
1780 /* FIXME: we need to do something here */
1789 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1794 static int main_pid_good(Service *s) {
1797 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1800 /* If we know the pid file, then lets just check if it is
1802 if (s->main_pid_known) {
1804 /* If it's an alien child let's check if it is still
1806 if (s->main_pid_alien && s->main_pid > 0)
1807 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1809 /* .. otherwise assume we'll get a SIGCHLD for it,
1810 * which we really should wait for to collect exit
1811 * status and code */
1812 return s->main_pid > 0;
1815 /* We don't know the pid */
1819 _pure_ static int control_pid_good(Service *s) {
1822 return s->control_pid > 0;
1825 static int cgroup_good(Service *s) {
1830 if (!UNIT(s)->cgroup_path)
1833 r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path, true);
1840 static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
1844 if (f != SERVICE_SUCCESS)
1847 service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
1849 if (allow_restart &&
1850 !s->forbid_restart &&
1851 (s->restart == SERVICE_RESTART_ALWAYS ||
1852 (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
1853 (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
1854 (s->restart == SERVICE_RESTART_ON_WATCHDOG && s->result == SERVICE_FAILURE_WATCHDOG) ||
1855 (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL ||
1856 s->result == SERVICE_FAILURE_CORE_DUMP))) &&
1857 (s->result != SERVICE_FAILURE_EXIT_CODE ||
1858 !set_contains(s->restart_ignore_status.code, INT_TO_PTR(s->main_exec_status.status))) &&
1859 (s->result != SERVICE_FAILURE_SIGNAL ||
1860 !set_contains(s->restart_ignore_status.signal, INT_TO_PTR(s->main_exec_status.status)))) {
1862 r = service_arm_timer(s, s->restart_usec);
1866 service_set_state(s, SERVICE_AUTO_RESTART);
1869 s->forbid_restart = false;
1871 /* we want fresh tmpdirs in case service is started again immediately */
1872 exec_runtime_destroy(s->exec_runtime);
1873 s->exec_runtime = exec_runtime_unref(s->exec_runtime);
1875 /* Try to delete the pid file. At this point it will be
1876 * out-of-date, and some software might be confused by it, so
1877 * let's remove it. */
1879 unlink_noerrno(s->pid_file);
1884 log_warning_unit(UNIT(s)->id,
1885 "%s failed to run install restart timer: %s",
1886 UNIT(s)->id, strerror(-r));
1887 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
1890 static void service_enter_stop_post(Service *s, ServiceResult f) {
1894 if (f != SERVICE_SUCCESS)
1897 service_unwatch_control_pid(s);
1899 s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST];
1900 if (s->control_command) {
1901 s->control_command_id = SERVICE_EXEC_STOP_POST;
1903 r = service_spawn(s,
1907 !s->permissions_start_only,
1908 !s->root_directory_start_only,
1917 service_set_state(s, SERVICE_STOP_POST);
1919 service_enter_dead(s, SERVICE_SUCCESS, true);
1924 log_warning_unit(UNIT(s)->id,
1925 "%s failed to run 'stop-post' task: %s",
1926 UNIT(s)->id, strerror(-r));
1927 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
1930 static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
1935 if (f != SERVICE_SUCCESS)
1938 r = unit_kill_context(
1941 state != SERVICE_STOP_SIGTERM && state != SERVICE_FINAL_SIGTERM,
1949 if (s->timeout_stop_usec > 0) {
1950 r = service_arm_timer(s, s->timeout_stop_usec);
1955 service_set_state(s, state);
1956 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1957 service_enter_stop_post(s, SERVICE_SUCCESS);
1959 service_enter_dead(s, SERVICE_SUCCESS, true);
1964 log_warning_unit(UNIT(s)->id,
1965 "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
1967 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1968 service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
1970 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
1973 static void service_enter_stop(Service *s, ServiceResult f) {
1978 if (f != SERVICE_SUCCESS)
1981 service_unwatch_control_pid(s);
1983 s->control_command = s->exec_command[SERVICE_EXEC_STOP];
1984 if (s->control_command) {
1985 s->control_command_id = SERVICE_EXEC_STOP;
1987 r = service_spawn(s,
1991 !s->permissions_start_only,
1992 !s->root_directory_start_only,
2000 service_set_state(s, SERVICE_STOP);
2002 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2007 log_warning_unit(UNIT(s)->id,
2008 "%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
2009 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2012 static void service_enter_running(Service *s, ServiceResult f) {
2013 int main_pid_ok, cgroup_ok;
2016 if (f != SERVICE_SUCCESS)
2019 main_pid_ok = main_pid_good(s);
2020 cgroup_ok = cgroup_good(s);
2022 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2023 (s->bus_name_good || s->type != SERVICE_DBUS))
2024 service_set_state(s, SERVICE_RUNNING);
2025 else if (s->remain_after_exit)
2026 service_set_state(s, SERVICE_EXITED);
2028 service_enter_stop(s, SERVICE_SUCCESS);
2031 static void service_enter_start_post(Service *s) {
2035 service_unwatch_control_pid(s);
2036 service_reset_watchdog(s);
2038 s->control_command = s->exec_command[SERVICE_EXEC_START_POST];
2039 if (s->control_command) {
2040 s->control_command_id = SERVICE_EXEC_START_POST;
2042 r = service_spawn(s,
2046 !s->permissions_start_only,
2047 !s->root_directory_start_only,
2055 service_set_state(s, SERVICE_START_POST);
2057 service_enter_running(s, SERVICE_SUCCESS);
2062 log_warning_unit(UNIT(s)->id,
2063 "%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
2064 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2067 static void service_kill_control_processes(Service *s) {
2070 if (!UNIT(s)->cgroup_path)
2073 p = strappenda(UNIT(s)->cgroup_path, "/control");
2074 cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, p, SIGKILL, true, true, true, NULL);
2077 static void service_enter_start(Service *s) {
2084 assert(s->exec_command[SERVICE_EXEC_START]);
2085 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2087 service_unwatch_control_pid(s);
2088 service_unwatch_main_pid(s);
2090 /* We want to ensure that nobody leaks processes from
2091 * START_PRE here, so let's go on a killing spree, People
2092 * should not spawn long running processes from START_PRE. */
2093 service_kill_control_processes(s);
2095 if (s->type == SERVICE_FORKING) {
2096 s->control_command_id = SERVICE_EXEC_START;
2097 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2099 s->main_command = NULL;
2101 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2102 s->control_command = NULL;
2104 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2107 r = service_spawn(s,
2109 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS ||
2110 s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT,
2115 s->notify_access != NOTIFY_NONE,
2121 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) {
2122 /* For simple services we immediately start
2123 * the START_POST binaries. */
2125 service_set_main_pid(s, pid);
2126 service_enter_start_post(s);
2128 } else if (s->type == SERVICE_FORKING) {
2130 /* For forking services we wait until the start
2131 * process exited. */
2133 s->control_pid = pid;
2134 service_set_state(s, SERVICE_START);
2136 } else if (s->type == SERVICE_ONESHOT ||
2137 s->type == SERVICE_DBUS ||
2138 s->type == SERVICE_NOTIFY) {
2140 /* For oneshot services we wait until the start
2141 * process exited, too, but it is our main process. */
2143 /* For D-Bus services we know the main pid right away,
2144 * but wait for the bus name to appear on the
2145 * bus. Notify services are similar. */
2147 service_set_main_pid(s, pid);
2148 service_set_state(s, SERVICE_START);
2150 assert_not_reached("Unknown service type");
2155 log_warning_unit(UNIT(s)->id,
2156 "%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
2157 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2160 static void service_enter_start_pre(Service *s) {
2165 service_unwatch_control_pid(s);
2167 s->control_command = s->exec_command[SERVICE_EXEC_START_PRE];
2168 if (s->control_command) {
2169 /* Before we start anything, let's clear up what might
2170 * be left from previous runs. */
2171 service_kill_control_processes(s);
2173 s->control_command_id = SERVICE_EXEC_START_PRE;
2175 r = service_spawn(s,
2179 !s->permissions_start_only,
2180 !s->root_directory_start_only,
2188 service_set_state(s, SERVICE_START_PRE);
2190 service_enter_start(s);
2195 log_warning_unit(UNIT(s)->id,
2196 "%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
2197 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2200 static void service_enter_restart(Service *s) {
2201 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2206 if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) {
2207 /* Don't restart things if we are going down anyway */
2208 log_info_unit(UNIT(s)->id,
2209 "Stop job pending for unit, delaying automatic restart.");
2211 r = service_arm_timer(s, s->restart_usec);
2218 /* Any units that are bound to this service must also be
2219 * restarted. We use JOB_RESTART (instead of the more obvious
2220 * JOB_START) here so that those dependency jobs will be added
2222 r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL);
2226 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
2227 * it will be canceled as part of the service_stop() call that
2228 * is executed as part of JOB_RESTART. */
2230 log_debug_unit(UNIT(s)->id,
2231 "%s scheduled restart job.", UNIT(s)->id);
2235 log_warning_unit(UNIT(s)->id,
2236 "%s failed to schedule restart job: %s",
2237 UNIT(s)->id, bus_error_message(&error, -r));
2238 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
2241 static void service_enter_reload(Service *s) {
2246 service_unwatch_control_pid(s);
2248 s->control_command = s->exec_command[SERVICE_EXEC_RELOAD];
2249 if (s->control_command) {
2250 s->control_command_id = SERVICE_EXEC_RELOAD;
2252 r = service_spawn(s,
2256 !s->permissions_start_only,
2257 !s->root_directory_start_only,
2265 service_set_state(s, SERVICE_RELOAD);
2267 service_enter_running(s, SERVICE_SUCCESS);
2272 log_warning_unit(UNIT(s)->id,
2273 "%s failed to run 'reload' task: %s",
2274 UNIT(s)->id, strerror(-r));
2275 s->reload_result = SERVICE_FAILURE_RESOURCES;
2276 service_enter_running(s, SERVICE_SUCCESS);
2279 static void service_run_next_control(Service *s) {
2283 assert(s->control_command);
2284 assert(s->control_command->command_next);
2286 assert(s->control_command_id != SERVICE_EXEC_START);
2288 s->control_command = s->control_command->command_next;
2289 service_unwatch_control_pid(s);
2291 r = service_spawn(s,
2295 !s->permissions_start_only,
2296 !s->root_directory_start_only,
2297 s->control_command_id == SERVICE_EXEC_START_PRE ||
2298 s->control_command_id == SERVICE_EXEC_STOP_POST,
2308 log_warning_unit(UNIT(s)->id,
2309 "%s failed to run next control task: %s",
2310 UNIT(s)->id, strerror(-r));
2312 if (s->state == SERVICE_START_PRE)
2313 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2314 else if (s->state == SERVICE_STOP)
2315 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2316 else if (s->state == SERVICE_STOP_POST)
2317 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2318 else if (s->state == SERVICE_RELOAD) {
2319 s->reload_result = SERVICE_FAILURE_RESOURCES;
2320 service_enter_running(s, SERVICE_SUCCESS);
2322 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2325 static void service_run_next_main(Service *s) {
2330 assert(s->main_command);
2331 assert(s->main_command->command_next);
2332 assert(s->type == SERVICE_ONESHOT);
2334 s->main_command = s->main_command->command_next;
2335 service_unwatch_main_pid(s);
2337 r = service_spawn(s,
2344 s->notify_access != NOTIFY_NONE,
2350 service_set_main_pid(s, pid);
2355 log_warning_unit(UNIT(s)->id,
2356 "%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
2357 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2360 static int service_start_limit_test(Service *s) {
2363 if (ratelimit_test(&s->start_limit))
2366 switch (s->start_limit_action) {
2368 case SERVICE_START_LIMIT_NONE:
2369 log_warning_unit(UNIT(s)->id,
2370 "%s start request repeated too quickly, refusing to start.",
2374 case SERVICE_START_LIMIT_REBOOT: {
2375 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2378 log_warning_unit(UNIT(s)->id,
2379 "%s start request repeated too quickly, rebooting.", UNIT(s)->id);
2381 r = manager_add_job_by_name(UNIT(s)->manager, JOB_START,
2382 SPECIAL_REBOOT_TARGET, JOB_REPLACE,
2383 true, &error, NULL);
2385 log_error_unit(UNIT(s)->id,
2386 "Failed to reboot: %s.", bus_error_message(&error, r));
2391 case SERVICE_START_LIMIT_REBOOT_FORCE:
2392 log_warning_unit(UNIT(s)->id,
2393 "%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id);
2394 UNIT(s)->manager->exit_code = MANAGER_REBOOT;
2397 case SERVICE_START_LIMIT_REBOOT_IMMEDIATE:
2398 log_warning_unit(UNIT(s)->id,
2399 "%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id);
2401 reboot(RB_AUTOBOOT);
2405 log_error_unit(UNIT(s)->id,
2406 "start limit action=%i", s->start_limit_action);
2407 assert_not_reached("Unknown StartLimitAction.");
2413 static int service_start(Unit *u) {
2414 Service *s = SERVICE(u);
2419 /* We cannot fulfill this request right now, try again later
2421 if (s->state == SERVICE_STOP ||
2422 s->state == SERVICE_STOP_SIGTERM ||
2423 s->state == SERVICE_STOP_SIGKILL ||
2424 s->state == SERVICE_STOP_POST ||
2425 s->state == SERVICE_FINAL_SIGTERM ||
2426 s->state == SERVICE_FINAL_SIGKILL)
2429 /* Already on it! */
2430 if (s->state == SERVICE_START_PRE ||
2431 s->state == SERVICE_START ||
2432 s->state == SERVICE_START_POST)
2435 /* A service that will be restarted must be stopped first to
2436 * trigger BindsTo and/or OnFailure dependencies. If a user
2437 * does not want to wait for the holdoff time to elapse, the
2438 * service should be manually restarted, not started. We
2439 * simply return EAGAIN here, so that any start jobs stay
2440 * queued, and assume that the auto restart timer will
2441 * eventually trigger the restart. */
2442 if (s->state == SERVICE_AUTO_RESTART)
2445 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED);
2447 /* Make sure we don't enter a busy loop of some kind. */
2448 r = service_start_limit_test(s);
2450 service_enter_dead(s, SERVICE_FAILURE_START_LIMIT, false);
2454 s->result = SERVICE_SUCCESS;
2455 s->reload_result = SERVICE_SUCCESS;
2456 s->main_pid_known = false;
2457 s->main_pid_alien = false;
2458 s->forbid_restart = false;
2460 service_enter_start_pre(s);
2464 static int service_stop(Unit *u) {
2465 Service *s = SERVICE(u);
2469 /* Don't create restart jobs from here. */
2470 s->forbid_restart = true;
2473 if (s->state == SERVICE_STOP ||
2474 s->state == SERVICE_STOP_SIGTERM ||
2475 s->state == SERVICE_STOP_SIGKILL ||
2476 s->state == SERVICE_STOP_POST ||
2477 s->state == SERVICE_FINAL_SIGTERM ||
2478 s->state == SERVICE_FINAL_SIGKILL)
2481 /* A restart will be scheduled or is in progress. */
2482 if (s->state == SERVICE_AUTO_RESTART) {
2483 service_set_state(s, SERVICE_DEAD);
2487 /* If there's already something running we go directly into
2489 if (s->state == SERVICE_START_PRE ||
2490 s->state == SERVICE_START ||
2491 s->state == SERVICE_START_POST ||
2492 s->state == SERVICE_RELOAD) {
2493 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2497 assert(s->state == SERVICE_RUNNING ||
2498 s->state == SERVICE_EXITED);
2500 service_enter_stop(s, SERVICE_SUCCESS);
2504 static int service_reload(Unit *u) {
2505 Service *s = SERVICE(u);
2509 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2511 service_enter_reload(s);
2515 _pure_ static bool service_can_reload(Unit *u) {
2516 Service *s = SERVICE(u);
2520 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2523 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2524 Service *s = SERVICE(u);
2530 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2531 unit_serialize_item(u, f, "result", service_result_to_string(s->result));
2532 unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
2534 if (s->control_pid > 0)
2535 unit_serialize_item_format(u, f, "control-pid", PID_FMT,
2538 if (s->main_pid_known && s->main_pid > 0)
2539 unit_serialize_item_format(u, f, "main-pid", PID_FMT, s->main_pid);
2541 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2544 unit_serialize_item(u, f, "status-text", s->status_text);
2546 /* FIXME: There's a minor uncleanliness here: if there are
2547 * multiple commands attached here, we will start from the
2548 * first one again */
2549 if (s->control_command_id >= 0)
2550 unit_serialize_item(u, f, "control-command",
2551 service_exec_command_to_string(s->control_command_id));
2553 if (s->socket_fd >= 0) {
2556 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2559 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2562 if (s->main_exec_status.pid > 0) {
2563 unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT,
2564 s->main_exec_status.pid);
2565 dual_timestamp_serialize(f, "main-exec-status-start",
2566 &s->main_exec_status.start_timestamp);
2567 dual_timestamp_serialize(f, "main-exec-status-exit",
2568 &s->main_exec_status.exit_timestamp);
2570 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2571 unit_serialize_item_format(u, f, "main-exec-status-code", "%i",
2572 s->main_exec_status.code);
2573 unit_serialize_item_format(u, f, "main-exec-status-status", "%i",
2574 s->main_exec_status.status);
2577 if (dual_timestamp_is_set(&s->watchdog_timestamp))
2578 dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
2580 if (s->forbid_restart)
2581 unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart));
2586 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2587 Service *s = SERVICE(u);
2594 if (streq(key, "state")) {
2597 state = service_state_from_string(value);
2599 log_debug_unit(u->id, "Failed to parse state value %s", value);
2601 s->deserialized_state = state;
2602 } else if (streq(key, "result")) {
2605 f = service_result_from_string(value);
2607 log_debug_unit(u->id, "Failed to parse result value %s", value);
2608 else if (f != SERVICE_SUCCESS)
2611 } else if (streq(key, "reload-result")) {
2614 f = service_result_from_string(value);
2616 log_debug_unit(u->id, "Failed to parse reload result value %s", value);
2617 else if (f != SERVICE_SUCCESS)
2618 s->reload_result = f;
2620 } else if (streq(key, "control-pid")) {
2623 if (parse_pid(value, &pid) < 0)
2624 log_debug_unit(u->id, "Failed to parse control-pid value %s", value);
2626 s->control_pid = pid;
2627 } else if (streq(key, "main-pid")) {
2630 if (parse_pid(value, &pid) < 0)
2631 log_debug_unit(u->id, "Failed to parse main-pid value %s", value);
2633 service_set_main_pid(s, pid);
2634 unit_watch_pid(UNIT(s), pid);
2636 } else if (streq(key, "main-pid-known")) {
2639 b = parse_boolean(value);
2641 log_debug_unit(u->id, "Failed to parse main-pid-known value %s", value);
2643 s->main_pid_known = b;
2644 } else if (streq(key, "status-text")) {
2651 free(s->status_text);
2655 } else if (streq(key, "control-command")) {
2656 ServiceExecCommand id;
2658 id = service_exec_command_from_string(value);
2660 log_debug_unit(u->id, "Failed to parse exec-command value %s", value);
2662 s->control_command_id = id;
2663 s->control_command = s->exec_command[id];
2665 } else if (streq(key, "socket-fd")) {
2668 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2669 log_debug_unit(u->id, "Failed to parse socket-fd value %s", value);
2672 if (s->socket_fd >= 0)
2673 close_nointr_nofail(s->socket_fd);
2674 s->socket_fd = fdset_remove(fds, fd);
2676 } else if (streq(key, "main-exec-status-pid")) {
2679 if (parse_pid(value, &pid) < 0)
2680 log_debug_unit(u->id, "Failed to parse main-exec-status-pid value %s", value);
2682 s->main_exec_status.pid = pid;
2683 } else if (streq(key, "main-exec-status-code")) {
2686 if (safe_atoi(value, &i) < 0)
2687 log_debug_unit(u->id, "Failed to parse main-exec-status-code value %s", value);
2689 s->main_exec_status.code = i;
2690 } else if (streq(key, "main-exec-status-status")) {
2693 if (safe_atoi(value, &i) < 0)
2694 log_debug_unit(u->id, "Failed to parse main-exec-status-status value %s", value);
2696 s->main_exec_status.status = i;
2697 } else if (streq(key, "main-exec-status-start"))
2698 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2699 else if (streq(key, "main-exec-status-exit"))
2700 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2701 else if (streq(key, "watchdog-timestamp"))
2702 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
2703 else if (streq(key, "forbid-restart")) {
2706 b = parse_boolean(value);
2708 log_debug_unit(u->id, "Failed to parse forbid-restart value %s", value);
2710 s->forbid_restart = b;
2712 log_debug_unit(u->id, "Unknown serialization key '%s'", key);
2717 _pure_ static UnitActiveState service_active_state(Unit *u) {
2718 const UnitActiveState *table;
2722 table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
2724 return table[SERVICE(u)->state];
2727 static const char *service_sub_state_to_string(Unit *u) {
2730 return service_state_to_string(SERVICE(u)->state);
2733 static bool service_check_gc(Unit *u) {
2734 Service *s = SERVICE(u);
2738 /* Never clean up services that still have a process around,
2739 * even if the service is formally dead. */
2740 if (cgroup_good(s) > 0 ||
2741 main_pid_good(s) > 0 ||
2742 control_pid_good(s) > 0)
2745 #ifdef HAVE_SYSV_COMPAT
2753 _pure_ static bool service_check_snapshot(Unit *u) {
2754 Service *s = SERVICE(u);
2758 return (s->socket_fd < 0);
2761 static int service_retry_pid_file(Service *s) {
2764 assert(s->pid_file);
2765 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2767 r = service_load_pid_file(s, false);
2771 service_unwatch_pid_file(s);
2773 service_enter_running(s, SERVICE_SUCCESS);
2777 static int service_watch_pid_file(Service *s) {
2780 log_debug_unit(UNIT(s)->id,
2781 "Setting watch for %s's PID file %s",
2782 UNIT(s)->id, s->pid_file_pathspec->path);
2783 r = path_spec_watch(s->pid_file_pathspec, service_dispatch_io);
2787 /* the pidfile might have appeared just before we set the watch */
2788 log_debug_unit(UNIT(s)->id,
2789 "Trying to read %s's PID file %s in case it changed",
2790 UNIT(s)->id, s->pid_file_pathspec->path);
2791 service_retry_pid_file(s);
2795 log_error_unit(UNIT(s)->id,
2796 "Failed to set a watch for %s's PID file %s: %s",
2797 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
2798 service_unwatch_pid_file(s);
2802 static int service_demand_pid_file(Service *s) {
2805 assert(s->pid_file);
2806 assert(!s->pid_file_pathspec);
2808 ps = new0(PathSpec, 1);
2813 ps->path = strdup(s->pid_file);
2819 path_kill_slashes(ps->path);
2821 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2822 * keep their PID file open all the time. */
2823 ps->type = PATH_MODIFIED;
2824 ps->inotify_fd = -1;
2826 s->pid_file_pathspec = ps;
2828 return service_watch_pid_file(s);
2831 static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata) {
2832 PathSpec *p = userdata;
2837 s = SERVICE(p->unit);
2841 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2842 assert(s->pid_file_pathspec);
2843 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2845 log_debug_unit(UNIT(s)->id, "inotify event for %s", UNIT(s)->id);
2847 if (path_spec_fd_event(p, events) < 0)
2850 if (service_retry_pid_file(s) == 0)
2853 if (service_watch_pid_file(s) < 0)
2859 service_unwatch_pid_file(s);
2860 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2864 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2865 Service *s = SERVICE(u);
2871 if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) :
2872 is_clean_exit_lsb(code, status, &s->success_status))
2873 f = SERVICE_SUCCESS;
2874 else if (code == CLD_EXITED)
2875 f = SERVICE_FAILURE_EXIT_CODE;
2876 else if (code == CLD_KILLED)
2877 f = SERVICE_FAILURE_SIGNAL;
2878 else if (code == CLD_DUMPED)
2879 f = SERVICE_FAILURE_CORE_DUMP;
2881 assert_not_reached("Unknown code");
2883 if (s->main_pid == pid) {
2884 /* Forking services may occasionally move to a new PID.
2885 * As long as they update the PID file before exiting the old
2886 * PID, they're fine. */
2887 if (service_load_pid_file(s, false) == 0)
2891 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2893 if (s->main_command) {
2894 /* If this is not a forking service than the
2895 * main process got started and hence we copy
2896 * the exit status so that it is recorded both
2897 * as main and as control process exit
2900 s->main_command->exec_status = s->main_exec_status;
2902 if (s->main_command->ignore)
2903 f = SERVICE_SUCCESS;
2904 } else if (s->exec_command[SERVICE_EXEC_START]) {
2906 /* If this is a forked process, then we should
2907 * ignore the return value if this was
2908 * configured for the starter process */
2910 if (s->exec_command[SERVICE_EXEC_START]->ignore)
2911 f = SERVICE_SUCCESS;
2914 log_struct_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2916 "MESSAGE=%s: main process exited, code=%s, status=%i/%s",
2917 u->id, sigchld_code_to_string(code), status,
2918 strna(code == CLD_EXITED
2919 ? exit_status_to_string(status, EXIT_STATUS_FULL)
2920 : signal_to_string(status)),
2921 "EXIT_CODE=%s", sigchld_code_to_string(code),
2922 "EXIT_STATUS=%i", status,
2925 if (f != SERVICE_SUCCESS)
2928 if (s->main_command &&
2929 s->main_command->command_next &&
2930 f == SERVICE_SUCCESS) {
2932 /* There is another command to *
2933 * execute, so let's do that. */
2935 log_debug_unit(u->id,
2936 "%s running next main command for state %s",
2937 u->id, service_state_to_string(s->state));
2938 service_run_next_main(s);
2942 /* The service exited, so the service is officially
2944 s->main_command = NULL;
2948 case SERVICE_START_POST:
2949 case SERVICE_RELOAD:
2951 /* Need to wait until the operation is
2956 if (s->type == SERVICE_ONESHOT) {
2957 /* This was our main goal, so let's go on */
2958 if (f == SERVICE_SUCCESS)
2959 service_enter_start_post(s);
2961 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
2967 case SERVICE_RUNNING:
2968 service_enter_running(s, f);
2971 case SERVICE_STOP_SIGTERM:
2972 case SERVICE_STOP_SIGKILL:
2974 if (!control_pid_good(s))
2975 service_enter_stop_post(s, f);
2977 /* If there is still a control process, wait for that first */
2980 case SERVICE_STOP_POST:
2981 case SERVICE_FINAL_SIGTERM:
2982 case SERVICE_FINAL_SIGKILL:
2984 if (!control_pid_good(s))
2985 service_enter_dead(s, f, true);
2989 assert_not_reached("Uh, main process died at wrong time.");
2993 } else if (s->control_pid == pid) {
2996 if (s->control_command) {
2997 exec_status_exit(&s->control_command->exec_status,
2998 &s->exec_context, pid, code, status);
3000 if (s->control_command->ignore)
3001 f = SERVICE_SUCCESS;
3004 log_full_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, u->id,
3005 "%s: control process exited, code=%s status=%i",
3006 u->id, sigchld_code_to_string(code), status);
3008 if (f != SERVICE_SUCCESS)
3011 /* Immediately get rid of the cgroup, so that the
3012 * kernel doesn't delay the cgroup empty messages for
3013 * the service cgroup any longer than necessary */
3014 service_kill_control_processes(s);
3016 if (s->control_command &&
3017 s->control_command->command_next &&
3018 f == SERVICE_SUCCESS) {
3020 /* There is another command to *
3021 * execute, so let's do that. */
3023 log_debug_unit(u->id,
3024 "%s running next control command for state %s",
3025 u->id, service_state_to_string(s->state));
3026 service_run_next_control(s);
3029 /* No further commands for this step, so let's
3030 * figure out what to do next */
3032 s->control_command = NULL;
3033 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
3035 log_debug_unit(u->id,
3036 "%s got final SIGCHLD for state %s",
3037 u->id, service_state_to_string(s->state));
3041 case SERVICE_START_PRE:
3042 if (f == SERVICE_SUCCESS)
3043 service_enter_start(s);
3045 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3049 if (s->type != SERVICE_FORKING)
3050 /* Maybe spurious event due to a reload that changed the type? */
3053 if (f != SERVICE_SUCCESS) {
3054 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3059 bool has_start_post;
3062 /* Let's try to load the pid file here if we can.
3063 * The PID file might actually be created by a START_POST
3064 * script. In that case don't worry if the loading fails. */
3066 has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
3067 r = service_load_pid_file(s, !has_start_post);
3068 if (!has_start_post && r < 0) {
3069 r = service_demand_pid_file(s);
3070 if (r < 0 || !cgroup_good(s))
3071 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3075 service_search_main_pid(s);
3077 service_enter_start_post(s);
3080 case SERVICE_START_POST:
3081 if (f != SERVICE_SUCCESS) {
3082 service_enter_stop(s, f);
3089 r = service_load_pid_file(s, true);
3091 r = service_demand_pid_file(s);
3092 if (r < 0 || !cgroup_good(s))
3093 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3097 service_search_main_pid(s);
3099 service_enter_running(s, SERVICE_SUCCESS);
3102 case SERVICE_RELOAD:
3103 if (f == SERVICE_SUCCESS) {
3104 service_load_pid_file(s, true);
3105 service_search_main_pid(s);
3108 s->reload_result = f;
3109 service_enter_running(s, SERVICE_SUCCESS);
3113 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
3116 case SERVICE_STOP_SIGTERM:
3117 case SERVICE_STOP_SIGKILL:
3118 if (main_pid_good(s) <= 0)
3119 service_enter_stop_post(s, f);
3121 /* If there is still a service
3122 * process around, wait until
3123 * that one quit, too */
3126 case SERVICE_STOP_POST:
3127 case SERVICE_FINAL_SIGTERM:
3128 case SERVICE_FINAL_SIGKILL:
3129 if (main_pid_good(s) <= 0)
3130 service_enter_dead(s, f, true);
3134 assert_not_reached("Uh, control process died at wrong time.");
3139 /* Notify clients about changed exit status */
3140 unit_add_to_dbus_queue(u);
3143 static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) {
3144 Service *s = SERVICE(userdata);
3147 assert(source == s->timer_event_source);
3151 case SERVICE_START_PRE:
3153 log_warning_unit(UNIT(s)->id,
3154 "%s %s operation timed out. Terminating.",
3156 s->state == SERVICE_START ? "start" : "start-pre");
3157 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3160 case SERVICE_START_POST:
3161 log_warning_unit(UNIT(s)->id,
3162 "%s start-post operation timed out. Stopping.", UNIT(s)->id);
3163 service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
3166 case SERVICE_RELOAD:
3167 log_warning_unit(UNIT(s)->id,
3168 "%s reload operation timed out. Stopping.", UNIT(s)->id);
3169 s->reload_result = SERVICE_FAILURE_TIMEOUT;
3170 service_enter_running(s, SERVICE_SUCCESS);
3174 log_warning_unit(UNIT(s)->id,
3175 "%s stopping timed out. Terminating.", UNIT(s)->id);
3176 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3179 case SERVICE_STOP_SIGTERM:
3180 if (s->kill_context.send_sigkill) {
3181 log_warning_unit(UNIT(s)->id,
3182 "%s stop-sigterm timed out. Killing.", UNIT(s)->id);
3183 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3185 log_warning_unit(UNIT(s)->id,
3186 "%s stop-sigterm timed out. Skipping SIGKILL.", UNIT(s)->id);
3187 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3192 case SERVICE_STOP_SIGKILL:
3193 /* Uh, we sent a SIGKILL and it is still not gone?
3194 * Must be something we cannot kill, so let's just be
3195 * weirded out and continue */
3197 log_warning_unit(UNIT(s)->id,
3198 "%s still around after SIGKILL. Ignoring.", UNIT(s)->id);
3199 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3202 case SERVICE_STOP_POST:
3203 log_warning_unit(UNIT(s)->id,
3204 "%s stop-post timed out. Terminating.", UNIT(s)->id);
3205 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3208 case SERVICE_FINAL_SIGTERM:
3209 if (s->kill_context.send_sigkill) {
3210 log_warning_unit(UNIT(s)->id,
3211 "%s stop-final-sigterm timed out. Killing.", UNIT(s)->id);
3212 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3214 log_warning_unit(UNIT(s)->id,
3215 "%s stop-final-sigterm timed out. Skipping SIGKILL. Entering failed mode.",
3217 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
3222 case SERVICE_FINAL_SIGKILL:
3223 log_warning_unit(UNIT(s)->id,
3224 "%s still around after final SIGKILL. Entering failed mode.", UNIT(s)->id);
3225 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
3228 case SERVICE_AUTO_RESTART:
3229 log_info_unit(UNIT(s)->id,
3230 "%s holdoff time over, scheduling restart.", UNIT(s)->id);
3231 service_enter_restart(s);
3235 assert_not_reached("Timeout at wrong time.");
3241 static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) {
3242 Service *s = SERVICE(userdata);
3245 assert(source == s->watchdog_event_source);
3247 log_error_unit(UNIT(s)->id, "%s watchdog timeout!", UNIT(s)->id);
3248 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_WATCHDOG);
3253 static void service_notify_cgroup_empty_event(Unit *u) {
3254 Service *s = SERVICE(u);
3258 log_debug_unit(u->id, "%s: cgroup is empty", u->id);
3262 /* Waiting for SIGCHLD is usually more interesting,
3263 * because it includes return codes/signals. Which is
3264 * why we ignore the cgroup events for most cases,
3265 * except when we don't know pid which to expect the
3269 case SERVICE_START_POST:
3270 /* If we were hoping for the daemon to write its PID file,
3271 * we can give up now. */
3272 if (s->pid_file_pathspec) {
3273 log_warning_unit(u->id,
3274 "%s never wrote its PID file. Failing.", UNIT(s)->id);
3275 service_unwatch_pid_file(s);
3276 if (s->state == SERVICE_START)
3277 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3279 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3283 case SERVICE_RUNNING:
3284 /* service_enter_running() will figure out what to do */
3285 service_enter_running(s, SERVICE_SUCCESS);
3288 case SERVICE_STOP_SIGTERM:
3289 case SERVICE_STOP_SIGKILL:
3291 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3292 service_enter_stop_post(s, SERVICE_SUCCESS);
3296 case SERVICE_STOP_POST:
3297 case SERVICE_FINAL_SIGTERM:
3298 case SERVICE_FINAL_SIGKILL:
3299 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3300 service_enter_dead(s, SERVICE_SUCCESS, true);
3309 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3310 Service *s = SERVICE(u);
3312 bool notify_dbus = false;
3316 log_debug_unit(u->id, "%s: Got notification message from PID "PID_FMT" (%s...)",
3317 u->id, pid, tags && *tags ? tags[0] : "(empty)");
3319 if (s->notify_access == NOTIFY_NONE) {
3320 log_warning_unit(u->id,
3321 "%s: Got notification message from PID "PID_FMT", but reception is disabled.",
3326 if (s->notify_access == NOTIFY_MAIN && s->main_pid != 0 && pid != s->main_pid) {
3327 log_warning_unit(u->id,
3328 "%s: Got notification message from PID "PID_FMT", but reception only permitted for PID "PID_FMT,
3329 u->id, pid, s->main_pid);
3333 /* Interpret MAINPID= */
3334 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3335 (s->state == SERVICE_START ||
3336 s->state == SERVICE_START_POST ||
3337 s->state == SERVICE_RUNNING ||
3338 s->state == SERVICE_RELOAD)) {
3340 if (parse_pid(e + 8, &pid) < 0)
3341 log_warning_unit(u->id, "Failed to parse notification message %s", e);
3343 log_debug_unit(u->id, "%s: got %s", u->id, e);
3344 service_set_main_pid(s, pid);
3345 unit_watch_pid(UNIT(s), pid);
3350 /* Interpret READY= */
3351 if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START && strv_find(tags, "READY=1")) {
3352 log_debug_unit(u->id, "%s: got READY=1", u->id);
3353 service_enter_start_post(s);
3357 /* Interpret STATUS= */
3358 e = strv_find_prefix(tags, "STATUS=");
3363 if (!utf8_is_valid(e+7)) {
3364 log_warning_unit(u->id, "Status message in notification is not UTF-8 clean.");
3368 log_debug_unit(u->id, "%s: got %s", u->id, e);
3379 if (!streq_ptr(s->status_text, t)) {
3380 free(s->status_text);
3387 /* Interpet WATCHDOG= */
3388 if (strv_find(tags, "WATCHDOG=1")) {
3389 log_debug_unit(u->id, "%s: got WATCHDOG=1", u->id);
3390 service_reset_watchdog(s);
3393 /* Notify clients about changed status or main pid */
3395 unit_add_to_dbus_queue(u);
3398 static int service_get_timeout(Unit *u, uint64_t *timeout) {
3399 Service *s = SERVICE(u);
3402 if (!s->timer_event_source)
3405 r = sd_event_source_get_time(s->timer_event_source, timeout);
3412 #ifdef HAVE_SYSV_COMPAT
3414 static int service_enumerate(Manager *m) {
3417 _cleanup_closedir_ DIR *d = NULL;
3418 _cleanup_free_ char *path = NULL, *fpath = NULL, *name = NULL;
3419 Set *runlevel_services[ELEMENTSOF(rcnd_table)] = {};
3420 _cleanup_set_free_ Set *shutdown_services = NULL;
3427 if (m->running_as != SYSTEMD_SYSTEM)
3430 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3431 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3435 path = strjoin(*p, "/", rcnd_table[i].path, NULL);
3446 if (errno != ENOENT)
3447 log_warning("opendir(%s) failed: %m", path);
3452 while ((de = readdir(d))) {
3455 if (ignore_file(de->d_name))
3458 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3461 if (strlen(de->d_name) < 4)
3464 a = undecchar(de->d_name[1]);
3465 b = undecchar(de->d_name[2]);
3471 fpath = strjoin(path, "/", de->d_name, NULL);
3477 if (access(fpath, X_OK) < 0) {
3479 if (errno != ENOENT)
3480 log_warning("access() failed on %s: %m", fpath);
3486 name = sysv_translate_name(de->d_name + 3);
3492 r = manager_load_unit_prepare(m, name, NULL, NULL, &service);
3494 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3498 if (de->d_name[0] == 'S') {
3500 if (rcnd_table[i].type == RUNLEVEL_UP) {
3501 SERVICE(service)->sysv_start_priority_from_rcnd =
3502 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3504 SERVICE(service)->sysv_enabled = true;
3507 r = set_ensure_allocated(&runlevel_services[i],
3508 trivial_hash_func, trivial_compare_func);
3512 r = set_put(runlevel_services[i], service);
3516 } else if (de->d_name[0] == 'K' &&
3517 (rcnd_table[i].type == RUNLEVEL_DOWN)) {
3519 r = set_ensure_allocated(&shutdown_services,
3520 trivial_hash_func, trivial_compare_func);
3524 r = set_put(shutdown_services, service);
3531 /* Now we loaded all stubs and are aware of the lowest
3532 start-up priority for all services, not let's actually load
3533 the services, this will also tell us which services are
3534 actually native now */
3535 manager_dispatch_load_queue(m);
3537 /* If this is a native service, rely on native ways to pull in
3538 * a service, don't pull it in via sysv rcN.d links. */
3539 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3540 SET_FOREACH(service, runlevel_services[i], j) {
3541 service = unit_follow_merge(service);
3543 if (service->fragment_path)
3546 r = unit_add_two_dependencies_by_name_inverse(
3547 service, UNIT_AFTER, UNIT_WANTS,
3548 rcnd_table[i].target, NULL, true);
3553 /* We honour K links only for halt/reboot. For the normal
3554 * runlevels we assume the stop jobs will be implicitly added
3555 * by the core logic. Also, we don't really distinguish here
3556 * between the runlevels 0 and 6 and just add them to the
3557 * special shutdown target. */
3558 SET_FOREACH(service, shutdown_services, j) {
3559 service = unit_follow_merge(service);
3561 if (service->fragment_path)
3564 r = unit_add_two_dependencies_by_name(
3565 service, UNIT_BEFORE, UNIT_CONFLICTS,
3566 SPECIAL_SHUTDOWN_TARGET, NULL, true);
3575 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3576 set_free(runlevel_services[i]);
3582 static void service_bus_name_owner_change(
3585 const char *old_owner,
3586 const char *new_owner) {
3588 Service *s = SERVICE(u);
3594 assert(streq(s->bus_name, name));
3595 assert(old_owner || new_owner);
3597 if (old_owner && new_owner)
3598 log_debug_unit(u->id,
3599 "%s's D-Bus name %s changed owner from %s to %s",
3600 u->id, name, old_owner, new_owner);
3602 log_debug_unit(u->id,
3603 "%s's D-Bus name %s no longer registered by %s",
3604 u->id, name, old_owner);
3606 log_debug_unit(u->id,
3607 "%s's D-Bus name %s now registered by %s",
3608 u->id, name, new_owner);
3610 s->bus_name_good = !!new_owner;
3612 if (s->type == SERVICE_DBUS) {
3614 /* service_enter_running() will figure out what to
3616 if (s->state == SERVICE_RUNNING)
3617 service_enter_running(s, SERVICE_SUCCESS);
3618 else if (s->state == SERVICE_START && new_owner)
3619 service_enter_start_post(s);
3621 } else if (new_owner &&
3623 (s->state == SERVICE_START ||
3624 s->state == SERVICE_START_POST ||
3625 s->state == SERVICE_RUNNING ||
3626 s->state == SERVICE_RELOAD)) {
3628 _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
3631 /* Try to acquire PID from bus service */
3633 r = sd_bus_get_owner(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds);
3635 r = sd_bus_creds_get_pid(creds, &pid);
3637 log_debug_unit(u->id, "%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
3639 service_set_main_pid(s, pid);
3640 unit_watch_pid(UNIT(s), pid);
3645 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3646 _cleanup_free_ char *peer = NULL;
3652 /* This is called by the socket code when instantiating a new
3653 * service for a stream socket and the socket needs to be
3656 if (UNIT(s)->load_state != UNIT_LOADED)
3659 if (s->socket_fd >= 0)
3662 if (s->state != SERVICE_DEAD)
3665 if (getpeername_pretty(fd, &peer) >= 0) {
3667 if (UNIT(s)->description) {
3668 _cleanup_free_ char *a;
3670 a = strjoin(UNIT(s)->description, " (", peer, ")", NULL);
3674 r = unit_set_description(UNIT(s), a);
3676 r = unit_set_description(UNIT(s), peer);
3684 unit_ref_set(&s->accept_socket, UNIT(sock));
3686 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3689 static void service_reset_failed(Unit *u) {
3690 Service *s = SERVICE(u);
3694 if (s->state == SERVICE_FAILED)
3695 service_set_state(s, SERVICE_DEAD);
3697 s->result = SERVICE_SUCCESS;
3698 s->reload_result = SERVICE_SUCCESS;
3700 RATELIMIT_RESET(s->start_limit);
3703 static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) {
3704 Service *s = SERVICE(u);
3706 return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error);
3709 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3710 [SERVICE_DEAD] = "dead",
3711 [SERVICE_START_PRE] = "start-pre",
3712 [SERVICE_START] = "start",
3713 [SERVICE_START_POST] = "start-post",
3714 [SERVICE_RUNNING] = "running",
3715 [SERVICE_EXITED] = "exited",
3716 [SERVICE_RELOAD] = "reload",
3717 [SERVICE_STOP] = "stop",
3718 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3719 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3720 [SERVICE_STOP_POST] = "stop-post",
3721 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3722 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3723 [SERVICE_FAILED] = "failed",
3724 [SERVICE_AUTO_RESTART] = "auto-restart",
3727 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3729 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3730 [SERVICE_RESTART_NO] = "no",
3731 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3732 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3733 [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog",
3734 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3735 [SERVICE_RESTART_ALWAYS] = "always"
3738 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3740 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3741 [SERVICE_SIMPLE] = "simple",
3742 [SERVICE_FORKING] = "forking",
3743 [SERVICE_ONESHOT] = "oneshot",
3744 [SERVICE_DBUS] = "dbus",
3745 [SERVICE_NOTIFY] = "notify",
3746 [SERVICE_IDLE] = "idle"
3749 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3751 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3752 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3753 [SERVICE_EXEC_START] = "ExecStart",
3754 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3755 [SERVICE_EXEC_RELOAD] = "ExecReload",
3756 [SERVICE_EXEC_STOP] = "ExecStop",
3757 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3760 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3762 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3763 [NOTIFY_NONE] = "none",
3764 [NOTIFY_MAIN] = "main",
3765 [NOTIFY_ALL] = "all"
3768 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3770 static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
3771 [SERVICE_SUCCESS] = "success",
3772 [SERVICE_FAILURE_RESOURCES] = "resources",
3773 [SERVICE_FAILURE_TIMEOUT] = "timeout",
3774 [SERVICE_FAILURE_EXIT_CODE] = "exit-code",
3775 [SERVICE_FAILURE_SIGNAL] = "signal",
3776 [SERVICE_FAILURE_CORE_DUMP] = "core-dump",
3777 [SERVICE_FAILURE_WATCHDOG] = "watchdog",
3778 [SERVICE_FAILURE_START_LIMIT] = "start-limit"
3781 DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
3783 static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = {
3784 [SERVICE_START_LIMIT_NONE] = "none",
3785 [SERVICE_START_LIMIT_REBOOT] = "reboot",
3786 [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force",
3787 [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate"
3789 DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction);
3791 const UnitVTable service_vtable = {
3792 .object_size = sizeof(Service),
3793 .exec_context_offset = offsetof(Service, exec_context),
3794 .cgroup_context_offset = offsetof(Service, cgroup_context),
3795 .kill_context_offset = offsetof(Service, kill_context),
3796 .exec_runtime_offset = offsetof(Service, exec_runtime),
3802 .private_section = "Service",
3804 .init = service_init,
3805 .done = service_done,
3806 .load = service_load,
3808 .coldplug = service_coldplug,
3810 .dump = service_dump,
3812 .start = service_start,
3813 .stop = service_stop,
3814 .reload = service_reload,
3816 .can_reload = service_can_reload,
3818 .kill = service_kill,
3820 .serialize = service_serialize,
3821 .deserialize_item = service_deserialize_item,
3823 .active_state = service_active_state,
3824 .sub_state_to_string = service_sub_state_to_string,
3826 .check_gc = service_check_gc,
3827 .check_snapshot = service_check_snapshot,
3829 .sigchld_event = service_sigchld_event,
3831 .reset_failed = service_reset_failed,
3833 .notify_cgroup_empty = service_notify_cgroup_empty_event,
3834 .notify_message = service_notify_message,
3836 .bus_name_owner_change = service_bus_name_owner_change,
3838 .bus_interface = "org.freedesktop.systemd1.Service",
3839 .bus_vtable = bus_service_vtable,
3840 .bus_set_property = bus_service_set_property,
3841 .bus_commit_properties = bus_service_commit_properties,
3843 .get_timeout = service_get_timeout,
3845 #ifdef HAVE_SYSV_COMPAT
3846 .enumerate = service_enumerate,
3849 .can_transient = true,
3851 .status_message_formats = {
3852 .starting_stopping = {
3853 [0] = "Starting %s...",
3854 [1] = "Stopping %s...",
3856 .finished_start_job = {
3857 [JOB_DONE] = "Started %s.",
3858 [JOB_FAILED] = "Failed to start %s.",
3859 [JOB_DEPENDENCY] = "Dependency failed for %s.",
3860 [JOB_TIMEOUT] = "Timed out starting %s.",
3862 .finished_stop_job = {
3863 [JOB_DONE] = "Stopped %s.",
3864 [JOB_FAILED] = "Stopped (with error) %s.",
3865 [JOB_TIMEOUT] = "Timed out stopping %s.",