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;
1488 if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART))
1489 unit_unwatch_all_pids(UNIT(s));
1492 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1493 SERVICE_RUNNING, SERVICE_RELOAD,
1494 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
1495 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) &&
1496 !(state == SERVICE_DEAD && UNIT(s)->job)) {
1497 service_close_socket_fd(s);
1498 service_connection_unref(s);
1501 if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
1502 service_stop_watchdog(s);
1504 /* For the inactive states unit_notify() will trim the cgroup,
1505 * but for exit we have to do that ourselves... */
1506 if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
1507 unit_destroy_cgroup(UNIT(s));
1509 /* For remain_after_exit services, let's see if we can "release" the
1510 * hold on the console, since unit_notify() only does that in case of
1511 * change of state */
1512 if (state == SERVICE_EXITED && s->remain_after_exit &&
1513 UNIT(s)->manager->n_on_console > 0) {
1514 ExecContext *ec = unit_get_exec_context(UNIT(s));
1515 if (ec && exec_context_may_touch_console(ec)) {
1516 Manager *m = UNIT(s)->manager;
1519 if (m->n_on_console == 0)
1520 /* unset no_console_output flag, since the console is free */
1521 m->no_console_output = false;
1525 if (old_state != state)
1526 log_debug_unit(UNIT(s)->id, "%s changed %s -> %s", UNIT(s)->id, service_state_to_string(old_state), service_state_to_string(state));
1528 unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS);
1529 s->reload_result = SERVICE_SUCCESS;
1532 static int service_coldplug(Unit *u) {
1533 Service *s = SERVICE(u);
1537 assert(s->state == SERVICE_DEAD);
1539 if (s->deserialized_state != s->state) {
1541 if (IN_SET(s->deserialized_state,
1542 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1544 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1546 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1550 k = IN_SET(s->deserialized_state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD) ? s->timeout_start_usec : s->timeout_stop_usec;
1552 /* For the start/stop timeouts 0 means off */
1554 r = service_arm_timer(s, k);
1560 if (s->deserialized_state == SERVICE_AUTO_RESTART) {
1562 /* The restart timeouts 0 means immediately */
1563 r = service_arm_timer(s, s->restart_usec);
1568 if (pid_valid(s->main_pid) &&
1569 ((s->deserialized_state == SERVICE_START && IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_ONESHOT, SERVICE_NOTIFY)) ||
1570 IN_SET(s->deserialized_state,
1571 SERVICE_START, SERVICE_START_POST,
1572 SERVICE_RUNNING, SERVICE_RELOAD,
1573 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1575 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) {
1576 r = unit_watch_pid(UNIT(s), s->main_pid);
1581 if (pid_valid(s->control_pid) &&
1582 IN_SET(s->deserialized_state,
1583 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1585 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1587 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1588 r = unit_watch_pid(UNIT(s), s->control_pid);
1593 if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART))
1594 unit_watch_all_pids(UNIT(s));
1596 if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
1597 service_start_watchdog(s);
1599 service_set_state(s, s->deserialized_state);
1605 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1609 unsigned rn_fds = 0;
1616 if (s->socket_fd >= 0)
1619 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
1624 if (u->type != UNIT_SOCKET)
1629 r = socket_collect_fds(sock, &cfds, &cn_fds);
1642 t = new(int, rn_fds+cn_fds);
1649 memcpy(t, rfds, rn_fds * sizeof(int));
1650 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1655 rn_fds = rn_fds+cn_fds;
1670 static int service_spawn(
1675 bool apply_permissions,
1677 bool apply_tty_stdin,
1678 bool set_notify_socket,
1685 _cleanup_free_ int *fdsbuf = NULL;
1686 unsigned n_fds = 0, n_env = 0;
1687 _cleanup_strv_free_ char
1688 **argv = NULL, **final_env = NULL, **our_env = NULL;
1695 unit_realize_cgroup(UNIT(s));
1697 r = unit_setup_exec_runtime(UNIT(s));
1702 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1703 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1704 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1706 if (s->socket_fd >= 0) {
1707 fds = &s->socket_fd;
1710 r = service_collect_fds(s, &fdsbuf, &n_fds);
1718 if (timeout && s->timeout_start_usec > 0) {
1719 r = service_arm_timer(s, s->timeout_start_usec);
1723 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1725 r = unit_full_printf_strv(UNIT(s), c->argv, &argv);
1729 our_env = new0(char*, 4);
1735 if (set_notify_socket)
1736 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
1741 if (s->main_pid > 0)
1742 if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) {
1747 if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM)
1748 if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid()) < 0) {
1753 final_env = strv_env_merge(2, UNIT(s)->manager->environment, our_env, NULL);
1759 if (is_control && UNIT(s)->cgroup_path) {
1760 path = strappenda(UNIT(s)->cgroup_path, "/control");
1761 cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
1763 path = UNIT(s)->cgroup_path;
1773 UNIT(s)->manager->confirm_spawn,
1774 UNIT(s)->manager->cgroup_supported,
1778 s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL,
1784 r = unit_watch_pid(UNIT(s), pid);
1786 /* FIXME: we need to do something here */
1795 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1800 static int main_pid_good(Service *s) {
1803 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1806 /* If we know the pid file, then lets just check if it is
1808 if (s->main_pid_known) {
1810 /* If it's an alien child let's check if it is still
1812 if (s->main_pid_alien && s->main_pid > 0)
1813 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1815 /* .. otherwise assume we'll get a SIGCHLD for it,
1816 * which we really should wait for to collect exit
1817 * status and code */
1818 return s->main_pid > 0;
1821 /* We don't know the pid */
1825 _pure_ static int control_pid_good(Service *s) {
1828 return s->control_pid > 0;
1831 static int cgroup_good(Service *s) {
1836 if (!UNIT(s)->cgroup_path)
1839 r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path, true);
1846 static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
1850 if (f != SERVICE_SUCCESS)
1853 service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
1855 if (allow_restart &&
1856 !s->forbid_restart &&
1857 (s->restart == SERVICE_RESTART_ALWAYS ||
1858 (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
1859 (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
1860 (s->restart == SERVICE_RESTART_ON_WATCHDOG && s->result == SERVICE_FAILURE_WATCHDOG) ||
1861 (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL ||
1862 s->result == SERVICE_FAILURE_CORE_DUMP))) &&
1863 (s->result != SERVICE_FAILURE_EXIT_CODE ||
1864 !set_contains(s->restart_ignore_status.code, INT_TO_PTR(s->main_exec_status.status))) &&
1865 (s->result != SERVICE_FAILURE_SIGNAL ||
1866 !set_contains(s->restart_ignore_status.signal, INT_TO_PTR(s->main_exec_status.status)))) {
1868 r = service_arm_timer(s, s->restart_usec);
1872 service_set_state(s, SERVICE_AUTO_RESTART);
1875 s->forbid_restart = false;
1877 /* we want fresh tmpdirs in case service is started again immediately */
1878 exec_runtime_destroy(s->exec_runtime);
1879 s->exec_runtime = exec_runtime_unref(s->exec_runtime);
1881 /* Try to delete the pid file. At this point it will be
1882 * out-of-date, and some software might be confused by it, so
1883 * let's remove it. */
1885 unlink_noerrno(s->pid_file);
1890 log_warning_unit(UNIT(s)->id,
1891 "%s failed to run install restart timer: %s",
1892 UNIT(s)->id, strerror(-r));
1893 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
1896 static void service_enter_stop_post(Service *s, ServiceResult f) {
1900 if (f != SERVICE_SUCCESS)
1903 service_unwatch_control_pid(s);
1904 unit_watch_all_pids(UNIT(s));
1906 s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST];
1907 if (s->control_command) {
1908 s->control_command_id = SERVICE_EXEC_STOP_POST;
1910 r = service_spawn(s,
1914 !s->permissions_start_only,
1915 !s->root_directory_start_only,
1923 service_set_state(s, SERVICE_STOP_POST);
1925 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS);
1930 log_warning_unit(UNIT(s)->id,
1931 "%s failed to run 'stop-post' task: %s",
1932 UNIT(s)->id, strerror(-r));
1933 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
1936 static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
1941 if (f != SERVICE_SUCCESS)
1944 unit_watch_all_pids(UNIT(s));
1946 r = unit_kill_context(
1949 state != SERVICE_STOP_SIGTERM && state != SERVICE_FINAL_SIGTERM,
1958 if (s->timeout_stop_usec > 0) {
1959 r = service_arm_timer(s, s->timeout_stop_usec);
1964 service_set_state(s, state);
1965 } else if (state == SERVICE_STOP_SIGTERM)
1966 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS);
1967 else if (state == SERVICE_STOP_SIGKILL)
1968 service_enter_stop_post(s, SERVICE_SUCCESS);
1969 else if (state == SERVICE_FINAL_SIGTERM)
1970 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS);
1972 service_enter_dead(s, SERVICE_SUCCESS, true);
1977 log_warning_unit(UNIT(s)->id,
1978 "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
1980 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1981 service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
1983 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
1986 static void service_enter_stop(Service *s, ServiceResult f) {
1991 if (f != SERVICE_SUCCESS)
1994 service_unwatch_control_pid(s);
1995 unit_watch_all_pids(UNIT(s));
1997 s->control_command = s->exec_command[SERVICE_EXEC_STOP];
1998 if (s->control_command) {
1999 s->control_command_id = SERVICE_EXEC_STOP;
2001 r = service_spawn(s,
2005 !s->permissions_start_only,
2006 !s->root_directory_start_only,
2014 service_set_state(s, SERVICE_STOP);
2016 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2021 log_warning_unit(UNIT(s)->id,
2022 "%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
2023 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2026 static void service_enter_running(Service *s, ServiceResult f) {
2027 int main_pid_ok, cgroup_ok;
2030 if (f != SERVICE_SUCCESS)
2033 main_pid_ok = main_pid_good(s);
2034 cgroup_ok = cgroup_good(s);
2036 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2037 (s->bus_name_good || s->type != SERVICE_DBUS))
2038 service_set_state(s, SERVICE_RUNNING);
2039 else if (s->remain_after_exit)
2040 service_set_state(s, SERVICE_EXITED);
2042 service_enter_stop(s, SERVICE_SUCCESS);
2045 static void service_enter_start_post(Service *s) {
2049 service_unwatch_control_pid(s);
2050 service_reset_watchdog(s);
2052 s->control_command = s->exec_command[SERVICE_EXEC_START_POST];
2053 if (s->control_command) {
2054 s->control_command_id = SERVICE_EXEC_START_POST;
2056 r = service_spawn(s,
2060 !s->permissions_start_only,
2061 !s->root_directory_start_only,
2069 service_set_state(s, SERVICE_START_POST);
2071 service_enter_running(s, SERVICE_SUCCESS);
2076 log_warning_unit(UNIT(s)->id,
2077 "%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
2078 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2081 static void service_kill_control_processes(Service *s) {
2084 if (!UNIT(s)->cgroup_path)
2087 p = strappenda(UNIT(s)->cgroup_path, "/control");
2088 cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, p, SIGKILL, true, true, true, NULL);
2091 static void service_enter_start(Service *s) {
2098 assert(s->exec_command[SERVICE_EXEC_START]);
2099 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2101 service_unwatch_control_pid(s);
2102 service_unwatch_main_pid(s);
2104 /* We want to ensure that nobody leaks processes from
2105 * START_PRE here, so let's go on a killing spree, People
2106 * should not spawn long running processes from START_PRE. */
2107 service_kill_control_processes(s);
2109 if (s->type == SERVICE_FORKING) {
2110 s->control_command_id = SERVICE_EXEC_START;
2111 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2113 s->main_command = NULL;
2115 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2116 s->control_command = NULL;
2118 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2121 r = service_spawn(s,
2123 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS ||
2124 s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT,
2129 s->notify_access != NOTIFY_NONE,
2135 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) {
2136 /* For simple services we immediately start
2137 * the START_POST binaries. */
2139 service_set_main_pid(s, pid);
2140 service_enter_start_post(s);
2142 } else if (s->type == SERVICE_FORKING) {
2144 /* For forking services we wait until the start
2145 * process exited. */
2147 s->control_pid = pid;
2148 service_set_state(s, SERVICE_START);
2150 } else if (s->type == SERVICE_ONESHOT ||
2151 s->type == SERVICE_DBUS ||
2152 s->type == SERVICE_NOTIFY) {
2154 /* For oneshot services we wait until the start
2155 * process exited, too, but it is our main process. */
2157 /* For D-Bus services we know the main pid right away,
2158 * but wait for the bus name to appear on the
2159 * bus. Notify services are similar. */
2161 service_set_main_pid(s, pid);
2162 service_set_state(s, SERVICE_START);
2164 assert_not_reached("Unknown service type");
2169 log_warning_unit(UNIT(s)->id,
2170 "%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
2171 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2174 static void service_enter_start_pre(Service *s) {
2179 service_unwatch_control_pid(s);
2181 s->control_command = s->exec_command[SERVICE_EXEC_START_PRE];
2182 if (s->control_command) {
2183 /* Before we start anything, let's clear up what might
2184 * be left from previous runs. */
2185 service_kill_control_processes(s);
2187 s->control_command_id = SERVICE_EXEC_START_PRE;
2189 r = service_spawn(s,
2193 !s->permissions_start_only,
2194 !s->root_directory_start_only,
2202 service_set_state(s, SERVICE_START_PRE);
2204 service_enter_start(s);
2209 log_warning_unit(UNIT(s)->id,
2210 "%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
2211 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2214 static void service_enter_restart(Service *s) {
2215 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2220 if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) {
2221 /* Don't restart things if we are going down anyway */
2222 log_info_unit(UNIT(s)->id,
2223 "Stop job pending for unit, delaying automatic restart.");
2225 r = service_arm_timer(s, s->restart_usec);
2232 /* Any units that are bound to this service must also be
2233 * restarted. We use JOB_RESTART (instead of the more obvious
2234 * JOB_START) here so that those dependency jobs will be added
2236 r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL);
2240 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
2241 * it will be canceled as part of the service_stop() call that
2242 * is executed as part of JOB_RESTART. */
2244 log_debug_unit(UNIT(s)->id,
2245 "%s scheduled restart job.", UNIT(s)->id);
2249 log_warning_unit(UNIT(s)->id,
2250 "%s failed to schedule restart job: %s",
2251 UNIT(s)->id, bus_error_message(&error, -r));
2252 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
2255 static void service_enter_reload(Service *s) {
2260 service_unwatch_control_pid(s);
2262 s->control_command = s->exec_command[SERVICE_EXEC_RELOAD];
2263 if (s->control_command) {
2264 s->control_command_id = SERVICE_EXEC_RELOAD;
2266 r = service_spawn(s,
2270 !s->permissions_start_only,
2271 !s->root_directory_start_only,
2279 service_set_state(s, SERVICE_RELOAD);
2281 service_enter_running(s, SERVICE_SUCCESS);
2286 log_warning_unit(UNIT(s)->id,
2287 "%s failed to run 'reload' task: %s",
2288 UNIT(s)->id, strerror(-r));
2289 s->reload_result = SERVICE_FAILURE_RESOURCES;
2290 service_enter_running(s, SERVICE_SUCCESS);
2293 static void service_run_next_control(Service *s) {
2297 assert(s->control_command);
2298 assert(s->control_command->command_next);
2300 assert(s->control_command_id != SERVICE_EXEC_START);
2302 s->control_command = s->control_command->command_next;
2303 service_unwatch_control_pid(s);
2305 r = service_spawn(s,
2309 !s->permissions_start_only,
2310 !s->root_directory_start_only,
2311 s->control_command_id == SERVICE_EXEC_START_PRE ||
2312 s->control_command_id == SERVICE_EXEC_STOP_POST,
2322 log_warning_unit(UNIT(s)->id,
2323 "%s failed to run next control task: %s",
2324 UNIT(s)->id, strerror(-r));
2326 if (s->state == SERVICE_START_PRE)
2327 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2328 else if (s->state == SERVICE_STOP)
2329 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2330 else if (s->state == SERVICE_STOP_POST)
2331 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2332 else if (s->state == SERVICE_RELOAD) {
2333 s->reload_result = SERVICE_FAILURE_RESOURCES;
2334 service_enter_running(s, SERVICE_SUCCESS);
2336 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2339 static void service_run_next_main(Service *s) {
2344 assert(s->main_command);
2345 assert(s->main_command->command_next);
2346 assert(s->type == SERVICE_ONESHOT);
2348 s->main_command = s->main_command->command_next;
2349 service_unwatch_main_pid(s);
2351 r = service_spawn(s,
2358 s->notify_access != NOTIFY_NONE,
2364 service_set_main_pid(s, pid);
2369 log_warning_unit(UNIT(s)->id,
2370 "%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
2371 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2374 static int service_start_limit_test(Service *s) {
2377 if (ratelimit_test(&s->start_limit))
2380 switch (s->start_limit_action) {
2382 case SERVICE_START_LIMIT_NONE:
2383 log_warning_unit(UNIT(s)->id,
2384 "%s start request repeated too quickly, refusing to start.",
2388 case SERVICE_START_LIMIT_REBOOT: {
2389 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2392 log_warning_unit(UNIT(s)->id,
2393 "%s start request repeated too quickly, rebooting.", UNIT(s)->id);
2395 r = manager_add_job_by_name(UNIT(s)->manager, JOB_START,
2396 SPECIAL_REBOOT_TARGET, JOB_REPLACE,
2397 true, &error, NULL);
2399 log_error_unit(UNIT(s)->id,
2400 "Failed to reboot: %s.", bus_error_message(&error, r));
2405 case SERVICE_START_LIMIT_REBOOT_FORCE:
2406 log_warning_unit(UNIT(s)->id,
2407 "%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id);
2408 UNIT(s)->manager->exit_code = MANAGER_REBOOT;
2411 case SERVICE_START_LIMIT_REBOOT_IMMEDIATE:
2412 log_warning_unit(UNIT(s)->id,
2413 "%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id);
2415 reboot(RB_AUTOBOOT);
2419 log_error_unit(UNIT(s)->id,
2420 "start limit action=%i", s->start_limit_action);
2421 assert_not_reached("Unknown StartLimitAction.");
2427 static int service_start(Unit *u) {
2428 Service *s = SERVICE(u);
2433 /* We cannot fulfill this request right now, try again later
2435 if (s->state == SERVICE_STOP ||
2436 s->state == SERVICE_STOP_SIGTERM ||
2437 s->state == SERVICE_STOP_SIGKILL ||
2438 s->state == SERVICE_STOP_POST ||
2439 s->state == SERVICE_FINAL_SIGTERM ||
2440 s->state == SERVICE_FINAL_SIGKILL)
2443 /* Already on it! */
2444 if (s->state == SERVICE_START_PRE ||
2445 s->state == SERVICE_START ||
2446 s->state == SERVICE_START_POST)
2449 /* A service that will be restarted must be stopped first to
2450 * trigger BindsTo and/or OnFailure dependencies. If a user
2451 * does not want to wait for the holdoff time to elapse, the
2452 * service should be manually restarted, not started. We
2453 * simply return EAGAIN here, so that any start jobs stay
2454 * queued, and assume that the auto restart timer will
2455 * eventually trigger the restart. */
2456 if (s->state == SERVICE_AUTO_RESTART)
2459 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED);
2461 /* Make sure we don't enter a busy loop of some kind. */
2462 r = service_start_limit_test(s);
2464 service_enter_dead(s, SERVICE_FAILURE_START_LIMIT, false);
2468 s->result = SERVICE_SUCCESS;
2469 s->reload_result = SERVICE_SUCCESS;
2470 s->main_pid_known = false;
2471 s->main_pid_alien = false;
2472 s->forbid_restart = false;
2474 service_enter_start_pre(s);
2478 static int service_stop(Unit *u) {
2479 Service *s = SERVICE(u);
2483 /* Don't create restart jobs from here. */
2484 s->forbid_restart = true;
2487 if (s->state == SERVICE_STOP ||
2488 s->state == SERVICE_STOP_SIGTERM ||
2489 s->state == SERVICE_STOP_SIGKILL ||
2490 s->state == SERVICE_STOP_POST ||
2491 s->state == SERVICE_FINAL_SIGTERM ||
2492 s->state == SERVICE_FINAL_SIGKILL)
2495 /* A restart will be scheduled or is in progress. */
2496 if (s->state == SERVICE_AUTO_RESTART) {
2497 service_set_state(s, SERVICE_DEAD);
2501 /* If there's already something running we go directly into
2503 if (s->state == SERVICE_START_PRE ||
2504 s->state == SERVICE_START ||
2505 s->state == SERVICE_START_POST ||
2506 s->state == SERVICE_RELOAD) {
2507 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2511 assert(s->state == SERVICE_RUNNING ||
2512 s->state == SERVICE_EXITED);
2514 service_enter_stop(s, SERVICE_SUCCESS);
2518 static int service_reload(Unit *u) {
2519 Service *s = SERVICE(u);
2523 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2525 service_enter_reload(s);
2529 _pure_ static bool service_can_reload(Unit *u) {
2530 Service *s = SERVICE(u);
2534 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2537 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2538 Service *s = SERVICE(u);
2544 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2545 unit_serialize_item(u, f, "result", service_result_to_string(s->result));
2546 unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
2548 if (s->control_pid > 0)
2549 unit_serialize_item_format(u, f, "control-pid", PID_FMT,
2552 if (s->main_pid_known && s->main_pid > 0)
2553 unit_serialize_item_format(u, f, "main-pid", PID_FMT, s->main_pid);
2555 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2558 unit_serialize_item(u, f, "status-text", s->status_text);
2560 /* FIXME: There's a minor uncleanliness here: if there are
2561 * multiple commands attached here, we will start from the
2562 * first one again */
2563 if (s->control_command_id >= 0)
2564 unit_serialize_item(u, f, "control-command",
2565 service_exec_command_to_string(s->control_command_id));
2567 if (s->socket_fd >= 0) {
2570 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2573 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2576 if (s->main_exec_status.pid > 0) {
2577 unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT,
2578 s->main_exec_status.pid);
2579 dual_timestamp_serialize(f, "main-exec-status-start",
2580 &s->main_exec_status.start_timestamp);
2581 dual_timestamp_serialize(f, "main-exec-status-exit",
2582 &s->main_exec_status.exit_timestamp);
2584 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2585 unit_serialize_item_format(u, f, "main-exec-status-code", "%i",
2586 s->main_exec_status.code);
2587 unit_serialize_item_format(u, f, "main-exec-status-status", "%i",
2588 s->main_exec_status.status);
2591 if (dual_timestamp_is_set(&s->watchdog_timestamp))
2592 dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
2594 if (s->forbid_restart)
2595 unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart));
2600 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2601 Service *s = SERVICE(u);
2608 if (streq(key, "state")) {
2611 state = service_state_from_string(value);
2613 log_debug_unit(u->id, "Failed to parse state value %s", value);
2615 s->deserialized_state = state;
2616 } else if (streq(key, "result")) {
2619 f = service_result_from_string(value);
2621 log_debug_unit(u->id, "Failed to parse result value %s", value);
2622 else if (f != SERVICE_SUCCESS)
2625 } else if (streq(key, "reload-result")) {
2628 f = service_result_from_string(value);
2630 log_debug_unit(u->id, "Failed to parse reload result value %s", value);
2631 else if (f != SERVICE_SUCCESS)
2632 s->reload_result = f;
2634 } else if (streq(key, "control-pid")) {
2637 if (parse_pid(value, &pid) < 0)
2638 log_debug_unit(u->id, "Failed to parse control-pid value %s", value);
2640 s->control_pid = pid;
2641 } else if (streq(key, "main-pid")) {
2644 if (parse_pid(value, &pid) < 0)
2645 log_debug_unit(u->id, "Failed to parse main-pid value %s", value);
2647 service_set_main_pid(s, pid);
2648 unit_watch_pid(UNIT(s), pid);
2650 } else if (streq(key, "main-pid-known")) {
2653 b = parse_boolean(value);
2655 log_debug_unit(u->id, "Failed to parse main-pid-known value %s", value);
2657 s->main_pid_known = b;
2658 } else if (streq(key, "status-text")) {
2665 free(s->status_text);
2669 } else if (streq(key, "control-command")) {
2670 ServiceExecCommand id;
2672 id = service_exec_command_from_string(value);
2674 log_debug_unit(u->id, "Failed to parse exec-command value %s", value);
2676 s->control_command_id = id;
2677 s->control_command = s->exec_command[id];
2679 } else if (streq(key, "socket-fd")) {
2682 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2683 log_debug_unit(u->id, "Failed to parse socket-fd value %s", value);
2686 if (s->socket_fd >= 0)
2687 close_nointr_nofail(s->socket_fd);
2688 s->socket_fd = fdset_remove(fds, fd);
2690 } else if (streq(key, "main-exec-status-pid")) {
2693 if (parse_pid(value, &pid) < 0)
2694 log_debug_unit(u->id, "Failed to parse main-exec-status-pid value %s", value);
2696 s->main_exec_status.pid = pid;
2697 } else if (streq(key, "main-exec-status-code")) {
2700 if (safe_atoi(value, &i) < 0)
2701 log_debug_unit(u->id, "Failed to parse main-exec-status-code value %s", value);
2703 s->main_exec_status.code = i;
2704 } else if (streq(key, "main-exec-status-status")) {
2707 if (safe_atoi(value, &i) < 0)
2708 log_debug_unit(u->id, "Failed to parse main-exec-status-status value %s", value);
2710 s->main_exec_status.status = i;
2711 } else if (streq(key, "main-exec-status-start"))
2712 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2713 else if (streq(key, "main-exec-status-exit"))
2714 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2715 else if (streq(key, "watchdog-timestamp"))
2716 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
2717 else if (streq(key, "forbid-restart")) {
2720 b = parse_boolean(value);
2722 log_debug_unit(u->id, "Failed to parse forbid-restart value %s", value);
2724 s->forbid_restart = b;
2726 log_debug_unit(u->id, "Unknown serialization key '%s'", key);
2731 _pure_ static UnitActiveState service_active_state(Unit *u) {
2732 const UnitActiveState *table;
2736 table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
2738 return table[SERVICE(u)->state];
2741 static const char *service_sub_state_to_string(Unit *u) {
2744 return service_state_to_string(SERVICE(u)->state);
2747 static bool service_check_gc(Unit *u) {
2748 Service *s = SERVICE(u);
2752 /* Never clean up services that still have a process around,
2753 * even if the service is formally dead. */
2754 if (cgroup_good(s) > 0 ||
2755 main_pid_good(s) > 0 ||
2756 control_pid_good(s) > 0)
2759 #ifdef HAVE_SYSV_COMPAT
2767 _pure_ static bool service_check_snapshot(Unit *u) {
2768 Service *s = SERVICE(u);
2772 return (s->socket_fd < 0);
2775 static int service_retry_pid_file(Service *s) {
2778 assert(s->pid_file);
2779 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2781 r = service_load_pid_file(s, false);
2785 service_unwatch_pid_file(s);
2787 service_enter_running(s, SERVICE_SUCCESS);
2791 static int service_watch_pid_file(Service *s) {
2794 log_debug_unit(UNIT(s)->id,
2795 "Setting watch for %s's PID file %s",
2796 UNIT(s)->id, s->pid_file_pathspec->path);
2797 r = path_spec_watch(s->pid_file_pathspec, service_dispatch_io);
2801 /* the pidfile might have appeared just before we set the watch */
2802 log_debug_unit(UNIT(s)->id,
2803 "Trying to read %s's PID file %s in case it changed",
2804 UNIT(s)->id, s->pid_file_pathspec->path);
2805 service_retry_pid_file(s);
2809 log_error_unit(UNIT(s)->id,
2810 "Failed to set a watch for %s's PID file %s: %s",
2811 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
2812 service_unwatch_pid_file(s);
2816 static int service_demand_pid_file(Service *s) {
2819 assert(s->pid_file);
2820 assert(!s->pid_file_pathspec);
2822 ps = new0(PathSpec, 1);
2827 ps->path = strdup(s->pid_file);
2833 path_kill_slashes(ps->path);
2835 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2836 * keep their PID file open all the time. */
2837 ps->type = PATH_MODIFIED;
2838 ps->inotify_fd = -1;
2840 s->pid_file_pathspec = ps;
2842 return service_watch_pid_file(s);
2845 static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata) {
2846 PathSpec *p = userdata;
2851 s = SERVICE(p->unit);
2855 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2856 assert(s->pid_file_pathspec);
2857 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2859 log_debug_unit(UNIT(s)->id, "inotify event for %s", UNIT(s)->id);
2861 if (path_spec_fd_event(p, events) < 0)
2864 if (service_retry_pid_file(s) == 0)
2867 if (service_watch_pid_file(s) < 0)
2873 service_unwatch_pid_file(s);
2874 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2878 static void service_notify_cgroup_empty_event(Unit *u) {
2879 Service *s = SERVICE(u);
2883 log_debug_unit(u->id, "%s: cgroup is empty", u->id);
2887 /* Waiting for SIGCHLD is usually more interesting,
2888 * because it includes return codes/signals. Which is
2889 * why we ignore the cgroup events for most cases,
2890 * except when we don't know pid which to expect the
2894 case SERVICE_START_POST:
2895 /* If we were hoping for the daemon to write its PID file,
2896 * we can give up now. */
2897 if (s->pid_file_pathspec) {
2898 log_warning_unit(u->id,
2899 "%s never wrote its PID file. Failing.", UNIT(s)->id);
2900 service_unwatch_pid_file(s);
2901 if (s->state == SERVICE_START)
2902 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2904 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2908 case SERVICE_RUNNING:
2909 /* service_enter_running() will figure out what to do */
2910 service_enter_running(s, SERVICE_SUCCESS);
2913 case SERVICE_STOP_SIGTERM:
2914 case SERVICE_STOP_SIGKILL:
2916 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2917 service_enter_stop_post(s, SERVICE_SUCCESS);
2921 case SERVICE_STOP_POST:
2922 case SERVICE_FINAL_SIGTERM:
2923 case SERVICE_FINAL_SIGKILL:
2924 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2925 service_enter_dead(s, SERVICE_SUCCESS, true);
2934 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2935 Service *s = SERVICE(u);
2941 if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) :
2942 is_clean_exit_lsb(code, status, &s->success_status))
2943 f = SERVICE_SUCCESS;
2944 else if (code == CLD_EXITED)
2945 f = SERVICE_FAILURE_EXIT_CODE;
2946 else if (code == CLD_KILLED)
2947 f = SERVICE_FAILURE_SIGNAL;
2948 else if (code == CLD_DUMPED)
2949 f = SERVICE_FAILURE_CORE_DUMP;
2951 assert_not_reached("Unknown code");
2953 if (s->main_pid == pid) {
2954 /* Forking services may occasionally move to a new PID.
2955 * As long as they update the PID file before exiting the old
2956 * PID, they're fine. */
2957 if (service_load_pid_file(s, false) == 0)
2961 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2963 if (s->main_command) {
2964 /* If this is not a forking service than the
2965 * main process got started and hence we copy
2966 * the exit status so that it is recorded both
2967 * as main and as control process exit
2970 s->main_command->exec_status = s->main_exec_status;
2972 if (s->main_command->ignore)
2973 f = SERVICE_SUCCESS;
2974 } else if (s->exec_command[SERVICE_EXEC_START]) {
2976 /* If this is a forked process, then we should
2977 * ignore the return value if this was
2978 * configured for the starter process */
2980 if (s->exec_command[SERVICE_EXEC_START]->ignore)
2981 f = SERVICE_SUCCESS;
2984 log_struct_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2986 "MESSAGE=%s: main process exited, code=%s, status=%i/%s",
2987 u->id, sigchld_code_to_string(code), status,
2988 strna(code == CLD_EXITED
2989 ? exit_status_to_string(status, EXIT_STATUS_FULL)
2990 : signal_to_string(status)),
2991 "EXIT_CODE=%s", sigchld_code_to_string(code),
2992 "EXIT_STATUS=%i", status,
2995 if (f != SERVICE_SUCCESS)
2998 if (s->main_command &&
2999 s->main_command->command_next &&
3000 f == SERVICE_SUCCESS) {
3002 /* There is another command to *
3003 * execute, so let's do that. */
3005 log_debug_unit(u->id,
3006 "%s running next main command for state %s",
3007 u->id, service_state_to_string(s->state));
3008 service_run_next_main(s);
3012 /* The service exited, so the service is officially
3014 s->main_command = NULL;
3018 case SERVICE_START_POST:
3019 case SERVICE_RELOAD:
3021 /* Need to wait until the operation is
3026 if (s->type == SERVICE_ONESHOT) {
3027 /* This was our main goal, so let's go on */
3028 if (f == SERVICE_SUCCESS)
3029 service_enter_start_post(s);
3031 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3037 case SERVICE_RUNNING:
3038 service_enter_running(s, f);
3041 case SERVICE_STOP_SIGTERM:
3042 case SERVICE_STOP_SIGKILL:
3044 if (!control_pid_good(s))
3045 service_enter_stop_post(s, f);
3047 /* If there is still a control process, wait for that first */
3050 case SERVICE_STOP_POST:
3051 case SERVICE_FINAL_SIGTERM:
3052 case SERVICE_FINAL_SIGKILL:
3054 if (!control_pid_good(s))
3055 service_enter_dead(s, f, true);
3059 assert_not_reached("Uh, main process died at wrong time.");
3063 } else if (s->control_pid == pid) {
3066 if (s->control_command) {
3067 exec_status_exit(&s->control_command->exec_status,
3068 &s->exec_context, pid, code, status);
3070 if (s->control_command->ignore)
3071 f = SERVICE_SUCCESS;
3074 log_full_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, u->id,
3075 "%s: control process exited, code=%s status=%i",
3076 u->id, sigchld_code_to_string(code), status);
3078 if (f != SERVICE_SUCCESS)
3081 /* Immediately get rid of the cgroup, so that the
3082 * kernel doesn't delay the cgroup empty messages for
3083 * the service cgroup any longer than necessary */
3084 service_kill_control_processes(s);
3086 if (s->control_command &&
3087 s->control_command->command_next &&
3088 f == SERVICE_SUCCESS) {
3090 /* There is another command to *
3091 * execute, so let's do that. */
3093 log_debug_unit(u->id,
3094 "%s running next control command for state %s",
3095 u->id, service_state_to_string(s->state));
3096 service_run_next_control(s);
3099 /* No further commands for this step, so let's
3100 * figure out what to do next */
3102 s->control_command = NULL;
3103 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
3105 log_debug_unit(u->id,
3106 "%s got final SIGCHLD for state %s",
3107 u->id, service_state_to_string(s->state));
3111 case SERVICE_START_PRE:
3112 if (f == SERVICE_SUCCESS)
3113 service_enter_start(s);
3115 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3119 if (s->type != SERVICE_FORKING)
3120 /* Maybe spurious event due to a reload that changed the type? */
3123 if (f != SERVICE_SUCCESS) {
3124 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3129 bool has_start_post;
3132 /* Let's try to load the pid file here if we can.
3133 * The PID file might actually be created by a START_POST
3134 * script. In that case don't worry if the loading fails. */
3136 has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
3137 r = service_load_pid_file(s, !has_start_post);
3138 if (!has_start_post && r < 0) {
3139 r = service_demand_pid_file(s);
3140 if (r < 0 || !cgroup_good(s))
3141 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3145 service_search_main_pid(s);
3147 service_enter_start_post(s);
3150 case SERVICE_START_POST:
3151 if (f != SERVICE_SUCCESS) {
3152 service_enter_stop(s, f);
3159 r = service_load_pid_file(s, true);
3161 r = service_demand_pid_file(s);
3162 if (r < 0 || !cgroup_good(s))
3163 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3167 service_search_main_pid(s);
3169 service_enter_running(s, SERVICE_SUCCESS);
3172 case SERVICE_RELOAD:
3173 if (f == SERVICE_SUCCESS) {
3174 service_load_pid_file(s, true);
3175 service_search_main_pid(s);
3178 s->reload_result = f;
3179 service_enter_running(s, SERVICE_SUCCESS);
3183 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
3186 case SERVICE_STOP_SIGTERM:
3187 case SERVICE_STOP_SIGKILL:
3188 if (main_pid_good(s) <= 0)
3189 service_enter_stop_post(s, f);
3191 /* If there is still a service
3192 * process around, wait until
3193 * that one quit, too */
3196 case SERVICE_STOP_POST:
3197 case SERVICE_FINAL_SIGTERM:
3198 case SERVICE_FINAL_SIGKILL:
3199 if (main_pid_good(s) <= 0)
3200 service_enter_dead(s, f, true);
3204 assert_not_reached("Uh, control process died at wrong time.");
3209 /* Notify clients about changed exit status */
3210 unit_add_to_dbus_queue(u);
3212 /* We got one SIGCHLD for the service, let's watch all
3213 * processes that are now running of the service, and watch
3214 * that. Among the PIDs we then watch will be children
3215 * reassigned to us, which hopefully allows us to identify
3216 * when all children are gone */
3217 unit_tidy_watch_pids(u, s->main_pid, s->control_pid);
3218 unit_watch_all_pids(u);
3220 /* If the PID set is empty now, then let's finish this off */
3221 if (set_isempty(u->pids))
3222 service_notify_cgroup_empty_event(u);
3225 static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) {
3226 Service *s = SERVICE(userdata);
3229 assert(source == s->timer_event_source);
3233 case SERVICE_START_PRE:
3235 log_warning_unit(UNIT(s)->id,
3236 "%s %s operation timed out. Terminating.",
3238 s->state == SERVICE_START ? "start" : "start-pre");
3239 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3242 case SERVICE_START_POST:
3243 log_warning_unit(UNIT(s)->id,
3244 "%s start-post operation timed out. Stopping.", UNIT(s)->id);
3245 service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
3248 case SERVICE_RELOAD:
3249 log_warning_unit(UNIT(s)->id,
3250 "%s reload operation timed out. Stopping.", UNIT(s)->id);
3251 s->reload_result = SERVICE_FAILURE_TIMEOUT;
3252 service_enter_running(s, SERVICE_SUCCESS);
3256 log_warning_unit(UNIT(s)->id,
3257 "%s stopping timed out. Terminating.", UNIT(s)->id);
3258 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3261 case SERVICE_STOP_SIGTERM:
3262 if (s->kill_context.send_sigkill) {
3263 log_warning_unit(UNIT(s)->id,
3264 "%s stop-sigterm timed out. Killing.", UNIT(s)->id);
3265 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3267 log_warning_unit(UNIT(s)->id,
3268 "%s stop-sigterm timed out. Skipping SIGKILL.", UNIT(s)->id);
3269 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3274 case SERVICE_STOP_SIGKILL:
3275 /* Uh, we sent a SIGKILL and it is still not gone?
3276 * Must be something we cannot kill, so let's just be
3277 * weirded out and continue */
3279 log_warning_unit(UNIT(s)->id,
3280 "%s still around after SIGKILL. Ignoring.", UNIT(s)->id);
3281 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3284 case SERVICE_STOP_POST:
3285 log_warning_unit(UNIT(s)->id,
3286 "%s stop-post timed out. Terminating.", UNIT(s)->id);
3287 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3290 case SERVICE_FINAL_SIGTERM:
3291 if (s->kill_context.send_sigkill) {
3292 log_warning_unit(UNIT(s)->id,
3293 "%s stop-final-sigterm timed out. Killing.", UNIT(s)->id);
3294 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3296 log_warning_unit(UNIT(s)->id,
3297 "%s stop-final-sigterm timed out. Skipping SIGKILL. Entering failed mode.",
3299 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
3304 case SERVICE_FINAL_SIGKILL:
3305 log_warning_unit(UNIT(s)->id,
3306 "%s still around after final SIGKILL. Entering failed mode.", UNIT(s)->id);
3307 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
3310 case SERVICE_AUTO_RESTART:
3311 log_info_unit(UNIT(s)->id,
3312 "%s holdoff time over, scheduling restart.", UNIT(s)->id);
3313 service_enter_restart(s);
3317 assert_not_reached("Timeout at wrong time.");
3323 static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) {
3324 Service *s = SERVICE(userdata);
3327 assert(source == s->watchdog_event_source);
3329 log_error_unit(UNIT(s)->id, "%s watchdog timeout!", UNIT(s)->id);
3330 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_WATCHDOG);
3335 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3336 Service *s = SERVICE(u);
3338 bool notify_dbus = false;
3342 log_debug_unit(u->id, "%s: Got notification message from PID "PID_FMT" (%s...)",
3343 u->id, pid, tags && *tags ? tags[0] : "(empty)");
3345 if (s->notify_access == NOTIFY_NONE) {
3346 log_warning_unit(u->id,
3347 "%s: Got notification message from PID "PID_FMT", but reception is disabled.",
3352 if (s->notify_access == NOTIFY_MAIN && s->main_pid != 0 && pid != s->main_pid) {
3353 log_warning_unit(u->id,
3354 "%s: Got notification message from PID "PID_FMT", but reception only permitted for PID "PID_FMT,
3355 u->id, pid, s->main_pid);
3359 /* Interpret MAINPID= */
3360 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3361 (s->state == SERVICE_START ||
3362 s->state == SERVICE_START_POST ||
3363 s->state == SERVICE_RUNNING ||
3364 s->state == SERVICE_RELOAD)) {
3366 if (parse_pid(e + 8, &pid) < 0)
3367 log_warning_unit(u->id, "Failed to parse notification message %s", e);
3369 log_debug_unit(u->id, "%s: got %s", u->id, e);
3370 service_set_main_pid(s, pid);
3371 unit_watch_pid(UNIT(s), pid);
3376 /* Interpret READY= */
3377 if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START && strv_find(tags, "READY=1")) {
3378 log_debug_unit(u->id, "%s: got READY=1", u->id);
3379 service_enter_start_post(s);
3383 /* Interpret STATUS= */
3384 e = strv_find_prefix(tags, "STATUS=");
3389 if (!utf8_is_valid(e+7)) {
3390 log_warning_unit(u->id, "Status message in notification is not UTF-8 clean.");
3394 log_debug_unit(u->id, "%s: got %s", u->id, e);
3405 if (!streq_ptr(s->status_text, t)) {
3406 free(s->status_text);
3413 /* Interpet WATCHDOG= */
3414 if (strv_find(tags, "WATCHDOG=1")) {
3415 log_debug_unit(u->id, "%s: got WATCHDOG=1", u->id);
3416 service_reset_watchdog(s);
3419 /* Notify clients about changed status or main pid */
3421 unit_add_to_dbus_queue(u);
3424 static int service_get_timeout(Unit *u, uint64_t *timeout) {
3425 Service *s = SERVICE(u);
3428 if (!s->timer_event_source)
3431 r = sd_event_source_get_time(s->timer_event_source, timeout);
3438 #ifdef HAVE_SYSV_COMPAT
3440 static int service_enumerate(Manager *m) {
3443 _cleanup_closedir_ DIR *d = NULL;
3444 _cleanup_free_ char *path = NULL, *fpath = NULL, *name = NULL;
3445 Set *runlevel_services[ELEMENTSOF(rcnd_table)] = {};
3446 _cleanup_set_free_ Set *shutdown_services = NULL;
3453 if (m->running_as != SYSTEMD_SYSTEM)
3456 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3457 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3461 path = strjoin(*p, "/", rcnd_table[i].path, NULL);
3472 if (errno != ENOENT)
3473 log_warning("opendir(%s) failed: %m", path);
3478 while ((de = readdir(d))) {
3481 if (ignore_file(de->d_name))
3484 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3487 if (strlen(de->d_name) < 4)
3490 a = undecchar(de->d_name[1]);
3491 b = undecchar(de->d_name[2]);
3497 fpath = strjoin(path, "/", de->d_name, NULL);
3503 if (access(fpath, X_OK) < 0) {
3505 if (errno != ENOENT)
3506 log_warning("access() failed on %s: %m", fpath);
3512 name = sysv_translate_name(de->d_name + 3);
3518 r = manager_load_unit_prepare(m, name, NULL, NULL, &service);
3520 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3524 if (de->d_name[0] == 'S') {
3526 if (rcnd_table[i].type == RUNLEVEL_UP) {
3527 SERVICE(service)->sysv_start_priority_from_rcnd =
3528 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3530 SERVICE(service)->sysv_enabled = true;
3533 r = set_ensure_allocated(&runlevel_services[i],
3534 trivial_hash_func, trivial_compare_func);
3538 r = set_put(runlevel_services[i], service);
3542 } else if (de->d_name[0] == 'K' &&
3543 (rcnd_table[i].type == RUNLEVEL_DOWN)) {
3545 r = set_ensure_allocated(&shutdown_services,
3546 trivial_hash_func, trivial_compare_func);
3550 r = set_put(shutdown_services, service);
3557 /* Now we loaded all stubs and are aware of the lowest
3558 start-up priority for all services, not let's actually load
3559 the services, this will also tell us which services are
3560 actually native now */
3561 manager_dispatch_load_queue(m);
3563 /* If this is a native service, rely on native ways to pull in
3564 * a service, don't pull it in via sysv rcN.d links. */
3565 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3566 SET_FOREACH(service, runlevel_services[i], j) {
3567 service = unit_follow_merge(service);
3569 if (service->fragment_path)
3572 r = unit_add_two_dependencies_by_name_inverse(
3573 service, UNIT_AFTER, UNIT_WANTS,
3574 rcnd_table[i].target, NULL, true);
3579 /* We honour K links only for halt/reboot. For the normal
3580 * runlevels we assume the stop jobs will be implicitly added
3581 * by the core logic. Also, we don't really distinguish here
3582 * between the runlevels 0 and 6 and just add them to the
3583 * special shutdown target. */
3584 SET_FOREACH(service, shutdown_services, j) {
3585 service = unit_follow_merge(service);
3587 if (service->fragment_path)
3590 r = unit_add_two_dependencies_by_name(
3591 service, UNIT_BEFORE, UNIT_CONFLICTS,
3592 SPECIAL_SHUTDOWN_TARGET, NULL, true);
3601 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3602 set_free(runlevel_services[i]);
3608 static void service_bus_name_owner_change(
3611 const char *old_owner,
3612 const char *new_owner) {
3614 Service *s = SERVICE(u);
3620 assert(streq(s->bus_name, name));
3621 assert(old_owner || new_owner);
3623 if (old_owner && new_owner)
3624 log_debug_unit(u->id,
3625 "%s's D-Bus name %s changed owner from %s to %s",
3626 u->id, name, old_owner, new_owner);
3628 log_debug_unit(u->id,
3629 "%s's D-Bus name %s no longer registered by %s",
3630 u->id, name, old_owner);
3632 log_debug_unit(u->id,
3633 "%s's D-Bus name %s now registered by %s",
3634 u->id, name, new_owner);
3636 s->bus_name_good = !!new_owner;
3638 if (s->type == SERVICE_DBUS) {
3640 /* service_enter_running() will figure out what to
3642 if (s->state == SERVICE_RUNNING)
3643 service_enter_running(s, SERVICE_SUCCESS);
3644 else if (s->state == SERVICE_START && new_owner)
3645 service_enter_start_post(s);
3647 } else if (new_owner &&
3649 (s->state == SERVICE_START ||
3650 s->state == SERVICE_START_POST ||
3651 s->state == SERVICE_RUNNING ||
3652 s->state == SERVICE_RELOAD)) {
3654 _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
3657 /* Try to acquire PID from bus service */
3659 r = sd_bus_get_owner(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds);
3661 r = sd_bus_creds_get_pid(creds, &pid);
3663 log_debug_unit(u->id, "%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
3665 service_set_main_pid(s, pid);
3666 unit_watch_pid(UNIT(s), pid);
3671 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3672 _cleanup_free_ char *peer = NULL;
3678 /* This is called by the socket code when instantiating a new
3679 * service for a stream socket and the socket needs to be
3682 if (UNIT(s)->load_state != UNIT_LOADED)
3685 if (s->socket_fd >= 0)
3688 if (s->state != SERVICE_DEAD)
3691 if (getpeername_pretty(fd, &peer) >= 0) {
3693 if (UNIT(s)->description) {
3694 _cleanup_free_ char *a;
3696 a = strjoin(UNIT(s)->description, " (", peer, ")", NULL);
3700 r = unit_set_description(UNIT(s), a);
3702 r = unit_set_description(UNIT(s), peer);
3710 unit_ref_set(&s->accept_socket, UNIT(sock));
3712 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3715 static void service_reset_failed(Unit *u) {
3716 Service *s = SERVICE(u);
3720 if (s->state == SERVICE_FAILED)
3721 service_set_state(s, SERVICE_DEAD);
3723 s->result = SERVICE_SUCCESS;
3724 s->reload_result = SERVICE_SUCCESS;
3726 RATELIMIT_RESET(s->start_limit);
3729 static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) {
3730 Service *s = SERVICE(u);
3732 return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error);
3735 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3736 [SERVICE_DEAD] = "dead",
3737 [SERVICE_START_PRE] = "start-pre",
3738 [SERVICE_START] = "start",
3739 [SERVICE_START_POST] = "start-post",
3740 [SERVICE_RUNNING] = "running",
3741 [SERVICE_EXITED] = "exited",
3742 [SERVICE_RELOAD] = "reload",
3743 [SERVICE_STOP] = "stop",
3744 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3745 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3746 [SERVICE_STOP_POST] = "stop-post",
3747 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3748 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3749 [SERVICE_FAILED] = "failed",
3750 [SERVICE_AUTO_RESTART] = "auto-restart",
3753 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3755 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3756 [SERVICE_RESTART_NO] = "no",
3757 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3758 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3759 [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog",
3760 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3761 [SERVICE_RESTART_ALWAYS] = "always"
3764 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3766 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3767 [SERVICE_SIMPLE] = "simple",
3768 [SERVICE_FORKING] = "forking",
3769 [SERVICE_ONESHOT] = "oneshot",
3770 [SERVICE_DBUS] = "dbus",
3771 [SERVICE_NOTIFY] = "notify",
3772 [SERVICE_IDLE] = "idle"
3775 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3777 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3778 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3779 [SERVICE_EXEC_START] = "ExecStart",
3780 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3781 [SERVICE_EXEC_RELOAD] = "ExecReload",
3782 [SERVICE_EXEC_STOP] = "ExecStop",
3783 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3786 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3788 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3789 [NOTIFY_NONE] = "none",
3790 [NOTIFY_MAIN] = "main",
3791 [NOTIFY_ALL] = "all"
3794 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3796 static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
3797 [SERVICE_SUCCESS] = "success",
3798 [SERVICE_FAILURE_RESOURCES] = "resources",
3799 [SERVICE_FAILURE_TIMEOUT] = "timeout",
3800 [SERVICE_FAILURE_EXIT_CODE] = "exit-code",
3801 [SERVICE_FAILURE_SIGNAL] = "signal",
3802 [SERVICE_FAILURE_CORE_DUMP] = "core-dump",
3803 [SERVICE_FAILURE_WATCHDOG] = "watchdog",
3804 [SERVICE_FAILURE_START_LIMIT] = "start-limit"
3807 DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
3809 static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = {
3810 [SERVICE_START_LIMIT_NONE] = "none",
3811 [SERVICE_START_LIMIT_REBOOT] = "reboot",
3812 [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force",
3813 [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate"
3815 DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction);
3817 const UnitVTable service_vtable = {
3818 .object_size = sizeof(Service),
3819 .exec_context_offset = offsetof(Service, exec_context),
3820 .cgroup_context_offset = offsetof(Service, cgroup_context),
3821 .kill_context_offset = offsetof(Service, kill_context),
3822 .exec_runtime_offset = offsetof(Service, exec_runtime),
3828 .private_section = "Service",
3830 .init = service_init,
3831 .done = service_done,
3832 .load = service_load,
3834 .coldplug = service_coldplug,
3836 .dump = service_dump,
3838 .start = service_start,
3839 .stop = service_stop,
3840 .reload = service_reload,
3842 .can_reload = service_can_reload,
3844 .kill = service_kill,
3846 .serialize = service_serialize,
3847 .deserialize_item = service_deserialize_item,
3849 .active_state = service_active_state,
3850 .sub_state_to_string = service_sub_state_to_string,
3852 .check_gc = service_check_gc,
3853 .check_snapshot = service_check_snapshot,
3855 .sigchld_event = service_sigchld_event,
3857 .reset_failed = service_reset_failed,
3859 .notify_cgroup_empty = service_notify_cgroup_empty_event,
3860 .notify_message = service_notify_message,
3862 .bus_name_owner_change = service_bus_name_owner_change,
3864 .bus_interface = "org.freedesktop.systemd1.Service",
3865 .bus_vtable = bus_service_vtable,
3866 .bus_set_property = bus_service_set_property,
3867 .bus_commit_properties = bus_service_commit_properties,
3869 .get_timeout = service_get_timeout,
3871 #ifdef HAVE_SYSV_COMPAT
3872 .enumerate = service_enumerate,
3875 .can_transient = true,
3877 .status_message_formats = {
3878 .starting_stopping = {
3879 [0] = "Starting %s...",
3880 [1] = "Stopping %s...",
3882 .finished_start_job = {
3883 [JOB_DONE] = "Started %s.",
3884 [JOB_FAILED] = "Failed to start %s.",
3885 [JOB_DEPENDENCY] = "Dependency failed for %s.",
3886 [JOB_TIMEOUT] = "Timed out starting %s.",
3888 .finished_stop_job = {
3889 [JOB_DONE] = "Stopped %s.",
3890 [JOB_FAILED] = "Stopped (with error) %s.",
3891 [JOB_TIMEOUT] = "Timed out stopping %s.",