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 %lu which is not our child. We'll most likely not notice when it exits.",
214 UNIT(s)->id, (unsigned long) pid);
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,
1096 "%s lacks ExecStart setting. Refusing.", UNIT(s)->id);
1100 if (s->type != SERVICE_ONESHOT &&
1101 s->exec_command[SERVICE_EXEC_START]->command_next) {
1102 log_error_unit(UNIT(s)->id,
1103 "%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1107 if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) {
1108 log_error_unit(UNIT(s)->id,
1109 "%s has Restart setting other than no, which isn't allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1113 if (s->type == SERVICE_DBUS && !s->bus_name) {
1114 log_error_unit(UNIT(s)->id,
1115 "%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->id);
1119 if (s->bus_name && s->type != SERVICE_DBUS)
1120 log_warning_unit(UNIT(s)->id,
1121 "%s has a D-Bus service name specified, but is not of type dbus. Ignoring.", UNIT(s)->id);
1123 if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) {
1124 log_error_unit(UNIT(s)->id,
1125 "%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id);
1132 static int service_add_default_dependencies(Service *s) {
1137 /* Add a number of automatic dependencies useful for the
1138 * majority of services. */
1140 /* First, pull in base system */
1141 if (UNIT(s)->manager->running_as == SYSTEMD_SYSTEM) {
1142 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
1143 SPECIAL_BASIC_TARGET, NULL, true);
1147 } else if (UNIT(s)->manager->running_as == SYSTEMD_USER) {
1148 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
1149 SPECIAL_SOCKETS_TARGET, NULL, true);
1153 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
1154 SPECIAL_TIMERS_TARGET, NULL, true);
1158 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
1159 SPECIAL_PATHS_TARGET, NULL, true);
1164 /* Second, activate normal shutdown */
1165 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS,
1166 SPECIAL_SHUTDOWN_TARGET, NULL, true);
1170 static void service_fix_output(Service *s) {
1173 /* If nothing has been explicitly configured, patch default
1174 * output in. If input is socket/tty we avoid this however,
1175 * since in that case we want output to default to the same
1176 * place as we read input from. */
1178 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1179 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1180 s->exec_context.std_input == EXEC_INPUT_NULL)
1181 s->exec_context.std_error = UNIT(s)->manager->default_std_error;
1183 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1184 s->exec_context.std_input == EXEC_INPUT_NULL)
1185 s->exec_context.std_output = UNIT(s)->manager->default_std_output;
1188 static int service_load(Unit *u) {
1190 Service *s = SERVICE(u);
1194 /* Load a .service file */
1195 r = unit_load_fragment(u);
1199 #ifdef HAVE_SYSV_COMPAT
1200 /* Load a classic init script as a fallback, if we couldn't find anything */
1201 if (u->load_state == UNIT_STUB) {
1202 r = service_load_sysv(s);
1208 /* Still nothing found? Then let's give up */
1209 if (u->load_state == UNIT_STUB)
1212 /* This is a new unit? Then let's add in some extras */
1213 if (u->load_state == UNIT_LOADED) {
1215 /* We were able to load something, then let's add in
1216 * the dropin directories. */
1217 r = unit_load_dropin(u);
1221 if (s->type == _SERVICE_TYPE_INVALID)
1222 s->type = s->bus_name ? SERVICE_DBUS : SERVICE_SIMPLE;
1224 /* Oneshot services have disabled start timeout by default */
1225 if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined)
1226 s->timeout_start_usec = 0;
1228 service_fix_output(s);
1230 r = unit_add_exec_dependencies(u, &s->exec_context);
1234 r = unit_add_default_slice(u);
1238 #ifdef HAVE_SYSV_COMPAT
1239 r = sysv_fix_order(s);
1245 r = unit_watch_bus_name(u, s->bus_name);
1250 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1251 s->notify_access = NOTIFY_MAIN;
1253 if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE)
1254 s->notify_access = NOTIFY_MAIN;
1256 if (s->type == SERVICE_DBUS || s->bus_name) {
1257 r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true);
1262 if (UNIT(s)->default_dependencies) {
1263 r = service_add_default_dependencies(s);
1268 r = unit_exec_context_defaults(u, &s->exec_context);
1273 return service_verify(s);
1276 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1278 ServiceExecCommand c;
1279 Service *s = SERVICE(u);
1280 const char *prefix2;
1281 _cleanup_free_ char *p2 = NULL;
1285 p2 = strappend(prefix, "\t");
1286 prefix2 = p2 ? p2 : prefix;
1289 "%sService State: %s\n"
1291 "%sReload Result: %s\n"
1292 "%sPermissionsStartOnly: %s\n"
1293 "%sRootDirectoryStartOnly: %s\n"
1294 "%sRemainAfterExit: %s\n"
1295 "%sGuessMainPID: %s\n"
1298 "%sNotifyAccess: %s\n",
1299 prefix, service_state_to_string(s->state),
1300 prefix, service_result_to_string(s->result),
1301 prefix, service_result_to_string(s->reload_result),
1302 prefix, yes_no(s->permissions_start_only),
1303 prefix, yes_no(s->root_directory_start_only),
1304 prefix, yes_no(s->remain_after_exit),
1305 prefix, yes_no(s->guess_main_pid),
1306 prefix, service_type_to_string(s->type),
1307 prefix, service_restart_to_string(s->restart),
1308 prefix, notify_access_to_string(s->notify_access));
1310 if (s->control_pid > 0)
1312 "%sControl PID: %lu\n",
1313 prefix, (unsigned long) s->control_pid);
1315 if (s->main_pid > 0)
1318 "%sMain PID Known: %s\n"
1319 "%sMain PID Alien: %s\n",
1320 prefix, (unsigned long) s->main_pid,
1321 prefix, yes_no(s->main_pid_known),
1322 prefix, yes_no(s->main_pid_alien));
1327 prefix, s->pid_file);
1332 "%sBus Name Good: %s\n",
1333 prefix, s->bus_name,
1334 prefix, yes_no(s->bus_name_good));
1336 kill_context_dump(&s->kill_context, f, prefix);
1337 exec_context_dump(&s->exec_context, f, prefix);
1339 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1341 if (!s->exec_command[c])
1344 fprintf(f, "%s-> %s:\n",
1345 prefix, service_exec_command_to_string(c));
1347 exec_command_dump_list(s->exec_command[c], f, prefix2);
1350 #ifdef HAVE_SYSV_COMPAT
1353 "%sSysV Init Script has LSB Header: %s\n"
1354 "%sSysVEnabled: %s\n",
1355 prefix, yes_no(s->sysv_has_lsb),
1356 prefix, yes_no(s->sysv_enabled));
1358 if (s->sysv_start_priority >= 0)
1360 "%sSysVStartPriority: %i\n",
1361 prefix, s->sysv_start_priority);
1363 if (s->sysv_runlevels)
1364 fprintf(f, "%sSysVRunLevels: %s\n",
1365 prefix, s->sysv_runlevels);
1369 fprintf(f, "%sStatus Text: %s\n",
1370 prefix, s->status_text);
1373 static int service_load_pid_file(Service *s, bool may_warn) {
1374 _cleanup_free_ char *k = NULL;
1383 r = read_one_line_file(s->pid_file, &k);
1386 log_info_unit(UNIT(s)->id,
1387 "PID file %s not readable (yet?) after %s.",
1388 s->pid_file, service_state_to_string(s->state));
1392 r = parse_pid(k, &pid);
1395 log_info_unit(UNIT(s)->id,
1396 "Failed to read PID from file %s: %s",
1397 s->pid_file, strerror(-r));
1401 if (kill(pid, 0) < 0 && errno != EPERM) {
1403 log_info_unit(UNIT(s)->id,
1404 "PID %lu read from file %s does not exist.",
1405 (unsigned long) pid, s->pid_file);
1409 if (s->main_pid_known) {
1410 if (pid == s->main_pid)
1413 log_debug_unit(UNIT(s)->id,
1414 "Main PID changing: %lu -> %lu",
1415 (unsigned long) s->main_pid, (unsigned long) pid);
1416 service_unwatch_main_pid(s);
1417 s->main_pid_known = false;
1419 log_debug_unit(UNIT(s)->id,
1420 "Main PID loaded: %lu", (unsigned long) pid);
1422 r = service_set_main_pid(s, pid);
1426 r = unit_watch_pid(UNIT(s), pid);
1428 /* FIXME: we need to do something here */
1429 log_warning_unit(UNIT(s)->id,
1430 "Failed to watch PID %lu from service %s",
1431 (unsigned long) pid, UNIT(s)->id);
1438 static int service_search_main_pid(Service *s) {
1444 /* If we know it anyway, don't ever fallback to unreliable
1446 if (s->main_pid_known)
1449 if (!s->guess_main_pid)
1452 assert(s->main_pid <= 0);
1454 pid = unit_search_main_pid(UNIT(s));
1458 log_debug_unit(UNIT(s)->id,
1459 "Main PID guessed: %lu", (unsigned long) pid);
1460 r = service_set_main_pid(s, pid);
1464 r = unit_watch_pid(UNIT(s), pid);
1466 /* FIXME: we need to do something here */
1467 log_warning_unit(UNIT(s)->id,
1468 "Failed to watch PID %lu from service %s",
1469 (unsigned long) pid, UNIT(s)->id);
1475 static void service_set_state(Service *s, ServiceState state) {
1476 ServiceState old_state;
1477 const UnitActiveState *table;
1481 table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
1483 old_state = s->state;
1486 service_unwatch_pid_file(s);
1489 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1491 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
1492 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL,
1493 SERVICE_AUTO_RESTART))
1494 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1497 SERVICE_START, SERVICE_START_POST,
1498 SERVICE_RUNNING, SERVICE_RELOAD,
1499 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) {
1500 service_unwatch_main_pid(s);
1501 s->main_command = NULL;
1505 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1507 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
1508 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1509 service_unwatch_control_pid(s);
1510 s->control_command = NULL;
1511 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1515 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1516 SERVICE_RUNNING, SERVICE_RELOAD,
1517 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
1518 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) &&
1519 !(state == SERVICE_DEAD && UNIT(s)->job)) {
1520 service_close_socket_fd(s);
1521 service_connection_unref(s);
1524 if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
1525 service_stop_watchdog(s);
1527 /* For the inactive states unit_notify() will trim the cgroup,
1528 * but for exit we have to do that ourselves... */
1529 if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
1530 unit_destroy_cgroup(UNIT(s));
1532 /* For remain_after_exit services, let's see if we can "release" the
1533 * hold on the console, since unit_notify() only does that in case of
1534 * change of state */
1535 if (state == SERVICE_EXITED && s->remain_after_exit &&
1536 UNIT(s)->manager->n_on_console > 0) {
1537 ExecContext *ec = unit_get_exec_context(UNIT(s));
1538 if (ec && exec_context_may_touch_console(ec)) {
1539 Manager *m = UNIT(s)->manager;
1542 if (m->n_on_console == 0)
1543 /* unset no_console_output flag, since the console is free */
1544 m->no_console_output = false;
1548 if (old_state != state)
1549 log_debug_unit(UNIT(s)->id, "%s changed %s -> %s", UNIT(s)->id, service_state_to_string(old_state), service_state_to_string(state));
1551 unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS);
1552 s->reload_result = SERVICE_SUCCESS;
1555 static int service_coldplug(Unit *u) {
1556 Service *s = SERVICE(u);
1560 assert(s->state == SERVICE_DEAD);
1562 if (s->deserialized_state != s->state) {
1564 if (s->deserialized_state == SERVICE_START_PRE ||
1565 s->deserialized_state == SERVICE_START ||
1566 s->deserialized_state == SERVICE_START_POST ||
1567 s->deserialized_state == SERVICE_RELOAD ||
1568 s->deserialized_state == SERVICE_STOP ||
1569 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1570 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1571 s->deserialized_state == SERVICE_STOP_POST ||
1572 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1573 s->deserialized_state == SERVICE_FINAL_SIGKILL) {
1577 k = s->deserialized_state == SERVICE_START_PRE || s->deserialized_state == SERVICE_START ||
1578 s->deserialized_state == SERVICE_START_POST || s->deserialized_state == SERVICE_RELOAD ?
1579 s->timeout_start_usec : s->timeout_stop_usec;
1581 /* For the start/stop timeouts 0 means off */
1583 r = service_arm_timer(s, k);
1589 if (s->deserialized_state == SERVICE_AUTO_RESTART) {
1591 /* The restart timeouts 0 means immediately */
1592 r = service_arm_timer(s, s->restart_usec);
1597 if ((s->deserialized_state == SERVICE_START &&
1598 (s->type == SERVICE_FORKING ||
1599 s->type == SERVICE_DBUS ||
1600 s->type == SERVICE_ONESHOT ||
1601 s->type == SERVICE_NOTIFY)) ||
1602 s->deserialized_state == SERVICE_START_POST ||
1603 s->deserialized_state == SERVICE_RUNNING ||
1604 s->deserialized_state == SERVICE_RELOAD ||
1605 s->deserialized_state == SERVICE_STOP ||
1606 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1607 s->deserialized_state == SERVICE_STOP_SIGKILL)
1608 if (s->main_pid > 0) {
1609 r = unit_watch_pid(UNIT(s), s->main_pid);
1614 if (s->deserialized_state == SERVICE_START_PRE ||
1615 s->deserialized_state == SERVICE_START ||
1616 s->deserialized_state == SERVICE_START_POST ||
1617 s->deserialized_state == SERVICE_RELOAD ||
1618 s->deserialized_state == SERVICE_STOP ||
1619 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1620 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1621 s->deserialized_state == SERVICE_STOP_POST ||
1622 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1623 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1624 if (s->control_pid > 0) {
1625 r = unit_watch_pid(UNIT(s), s->control_pid);
1630 if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
1631 service_start_watchdog(s);
1633 service_set_state(s, s->deserialized_state);
1639 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1643 unsigned rn_fds = 0;
1650 if (s->socket_fd >= 0)
1653 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
1658 if (u->type != UNIT_SOCKET)
1663 r = socket_collect_fds(sock, &cfds, &cn_fds);
1676 t = new(int, rn_fds+cn_fds);
1683 memcpy(t, rfds, rn_fds * sizeof(int));
1684 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1689 rn_fds = rn_fds+cn_fds;
1704 static int service_spawn(
1709 bool apply_permissions,
1711 bool apply_tty_stdin,
1712 bool set_notify_socket,
1719 _cleanup_free_ int *fdsbuf = NULL;
1720 unsigned n_fds = 0, n_env = 0;
1721 _cleanup_strv_free_ char
1722 **argv = NULL, **final_env = NULL, **our_env = NULL;
1729 unit_realize_cgroup(UNIT(s));
1731 r = unit_setup_exec_runtime(UNIT(s));
1736 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1737 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1738 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1740 if (s->socket_fd >= 0) {
1741 fds = &s->socket_fd;
1744 r = service_collect_fds(s, &fdsbuf, &n_fds);
1752 if (timeout && s->timeout_start_usec > 0) {
1753 r = service_arm_timer(s, s->timeout_start_usec);
1757 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1759 r = unit_full_printf_strv(UNIT(s), c->argv, &argv);
1763 our_env = new0(char*, 5);
1769 if (set_notify_socket)
1770 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
1775 if (s->main_pid > 0)
1776 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1781 if (s->watchdog_usec > 0)
1782 if (asprintf(our_env + n_env++, "WATCHDOG_USEC=%llu", (unsigned long long) s->watchdog_usec) < 0) {
1787 if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM)
1788 if (asprintf(our_env + n_env++, "MANAGERPID=%lu", (unsigned long) getpid()) < 0) {
1793 final_env = strv_env_merge(2, UNIT(s)->manager->environment, our_env, NULL);
1799 if (is_control && UNIT(s)->cgroup_path) {
1800 path = strappenda(UNIT(s)->cgroup_path, "/control");
1801 cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
1803 path = UNIT(s)->cgroup_path;
1813 UNIT(s)->manager->confirm_spawn,
1814 UNIT(s)->manager->cgroup_supported,
1817 s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL,
1823 r = unit_watch_pid(UNIT(s), pid);
1825 /* FIXME: we need to do something here */
1834 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1839 static int main_pid_good(Service *s) {
1842 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1845 /* If we know the pid file, then lets just check if it is
1847 if (s->main_pid_known) {
1849 /* If it's an alien child let's check if it is still
1851 if (s->main_pid_alien && s->main_pid > 0)
1852 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1854 /* .. otherwise assume we'll get a SIGCHLD for it,
1855 * which we really should wait for to collect exit
1856 * status and code */
1857 return s->main_pid > 0;
1860 /* We don't know the pid */
1864 _pure_ static int control_pid_good(Service *s) {
1867 return s->control_pid > 0;
1870 static int cgroup_good(Service *s) {
1875 if (!UNIT(s)->cgroup_path)
1878 r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path, true);
1885 static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
1889 if (f != SERVICE_SUCCESS)
1892 service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
1894 if (allow_restart &&
1895 !s->forbid_restart &&
1896 (s->restart == SERVICE_RESTART_ALWAYS ||
1897 (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
1898 (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
1899 (s->restart == SERVICE_RESTART_ON_WATCHDOG && s->result == SERVICE_FAILURE_WATCHDOG) ||
1900 (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL ||
1901 s->result == SERVICE_FAILURE_CORE_DUMP))) &&
1902 (s->result != SERVICE_FAILURE_EXIT_CODE ||
1903 !set_contains(s->restart_ignore_status.code, INT_TO_PTR(s->main_exec_status.status))) &&
1904 (s->result != SERVICE_FAILURE_SIGNAL ||
1905 !set_contains(s->restart_ignore_status.signal, INT_TO_PTR(s->main_exec_status.status)))) {
1907 r = service_arm_timer(s, s->restart_usec);
1911 service_set_state(s, SERVICE_AUTO_RESTART);
1914 s->forbid_restart = false;
1916 /* we want fresh tmpdirs in case service is started again immediately */
1917 exec_runtime_destroy(s->exec_runtime);
1918 s->exec_runtime = exec_runtime_unref(s->exec_runtime);
1920 /* Try to delete the pid file. At this point it will be
1921 * out-of-date, and some software might be confused by it, so
1922 * let's remove it. */
1924 unlink_noerrno(s->pid_file);
1929 log_warning_unit(UNIT(s)->id,
1930 "%s failed to run install restart timer: %s",
1931 UNIT(s)->id, strerror(-r));
1932 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
1935 static void service_enter_stop_post(Service *s, ServiceResult f) {
1939 if (f != SERVICE_SUCCESS)
1942 service_unwatch_control_pid(s);
1944 s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST];
1945 if (s->control_command) {
1946 s->control_command_id = SERVICE_EXEC_STOP_POST;
1948 r = service_spawn(s,
1952 !s->permissions_start_only,
1953 !s->root_directory_start_only,
1962 service_set_state(s, SERVICE_STOP_POST);
1964 service_enter_dead(s, SERVICE_SUCCESS, true);
1969 log_warning_unit(UNIT(s)->id,
1970 "%s failed to run 'stop-post' task: %s",
1971 UNIT(s)->id, strerror(-r));
1972 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
1975 static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
1980 if (f != SERVICE_SUCCESS)
1983 r = unit_kill_context(
1986 state != SERVICE_STOP_SIGTERM && state != SERVICE_FINAL_SIGTERM,
1994 if (s->timeout_stop_usec > 0) {
1995 r = service_arm_timer(s, s->timeout_stop_usec);
2000 service_set_state(s, state);
2001 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
2002 service_enter_stop_post(s, SERVICE_SUCCESS);
2004 service_enter_dead(s, SERVICE_SUCCESS, true);
2009 log_warning_unit(UNIT(s)->id,
2010 "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
2012 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
2013 service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
2015 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2018 static void service_enter_stop(Service *s, ServiceResult f) {
2023 if (f != SERVICE_SUCCESS)
2026 service_unwatch_control_pid(s);
2028 s->control_command = s->exec_command[SERVICE_EXEC_STOP];
2029 if (s->control_command) {
2030 s->control_command_id = SERVICE_EXEC_STOP;
2032 r = service_spawn(s,
2036 !s->permissions_start_only,
2037 !s->root_directory_start_only,
2045 service_set_state(s, SERVICE_STOP);
2047 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2052 log_warning_unit(UNIT(s)->id,
2053 "%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
2054 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2057 static void service_enter_running(Service *s, ServiceResult f) {
2058 int main_pid_ok, cgroup_ok;
2061 if (f != SERVICE_SUCCESS)
2064 main_pid_ok = main_pid_good(s);
2065 cgroup_ok = cgroup_good(s);
2067 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2068 (s->bus_name_good || s->type != SERVICE_DBUS))
2069 service_set_state(s, SERVICE_RUNNING);
2070 else if (s->remain_after_exit)
2071 service_set_state(s, SERVICE_EXITED);
2073 service_enter_stop(s, SERVICE_SUCCESS);
2076 static void service_enter_start_post(Service *s) {
2080 service_unwatch_control_pid(s);
2081 service_reset_watchdog(s);
2083 s->control_command = s->exec_command[SERVICE_EXEC_START_POST];
2084 if (s->control_command) {
2085 s->control_command_id = SERVICE_EXEC_START_POST;
2087 r = service_spawn(s,
2091 !s->permissions_start_only,
2092 !s->root_directory_start_only,
2100 service_set_state(s, SERVICE_START_POST);
2102 service_enter_running(s, SERVICE_SUCCESS);
2107 log_warning_unit(UNIT(s)->id,
2108 "%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
2109 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2112 static void service_kill_control_processes(Service *s) {
2115 if (!UNIT(s)->cgroup_path)
2118 p = strappenda(UNIT(s)->cgroup_path, "/control");
2119 cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, p, SIGKILL, true, true, true, NULL);
2122 static void service_enter_start(Service *s) {
2129 assert(s->exec_command[SERVICE_EXEC_START]);
2130 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2132 service_unwatch_control_pid(s);
2133 service_unwatch_main_pid(s);
2135 /* We want to ensure that nobody leaks processes from
2136 * START_PRE here, so let's go on a killing spree, People
2137 * should not spawn long running processes from START_PRE. */
2138 service_kill_control_processes(s);
2140 if (s->type == SERVICE_FORKING) {
2141 s->control_command_id = SERVICE_EXEC_START;
2142 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2144 s->main_command = NULL;
2146 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2147 s->control_command = NULL;
2149 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2152 r = service_spawn(s,
2154 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS ||
2155 s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT,
2160 s->notify_access != NOTIFY_NONE,
2166 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) {
2167 /* For simple services we immediately start
2168 * the START_POST binaries. */
2170 service_set_main_pid(s, pid);
2171 service_enter_start_post(s);
2173 } else if (s->type == SERVICE_FORKING) {
2175 /* For forking services we wait until the start
2176 * process exited. */
2178 s->control_pid = pid;
2179 service_set_state(s, SERVICE_START);
2181 } else if (s->type == SERVICE_ONESHOT ||
2182 s->type == SERVICE_DBUS ||
2183 s->type == SERVICE_NOTIFY) {
2185 /* For oneshot services we wait until the start
2186 * process exited, too, but it is our main process. */
2188 /* For D-Bus services we know the main pid right away,
2189 * but wait for the bus name to appear on the
2190 * bus. Notify services are similar. */
2192 service_set_main_pid(s, pid);
2193 service_set_state(s, SERVICE_START);
2195 assert_not_reached("Unknown service type");
2200 log_warning_unit(UNIT(s)->id,
2201 "%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
2202 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2205 static void service_enter_start_pre(Service *s) {
2210 service_unwatch_control_pid(s);
2212 s->control_command = s->exec_command[SERVICE_EXEC_START_PRE];
2213 if (s->control_command) {
2214 /* Before we start anything, let's clear up what might
2215 * be left from previous runs. */
2216 service_kill_control_processes(s);
2218 s->control_command_id = SERVICE_EXEC_START_PRE;
2220 r = service_spawn(s,
2224 !s->permissions_start_only,
2225 !s->root_directory_start_only,
2233 service_set_state(s, SERVICE_START_PRE);
2235 service_enter_start(s);
2240 log_warning_unit(UNIT(s)->id,
2241 "%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
2242 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2245 static void service_enter_restart(Service *s) {
2246 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2251 if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) {
2252 /* Don't restart things if we are going down anyway */
2253 log_info_unit(UNIT(s)->id,
2254 "Stop job pending for unit, delaying automatic restart.");
2256 r = service_arm_timer(s, s->restart_usec);
2263 /* Any units that are bound to this service must also be
2264 * restarted. We use JOB_RESTART (instead of the more obvious
2265 * JOB_START) here so that those dependency jobs will be added
2267 r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL);
2271 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
2272 * it will be canceled as part of the service_stop() call that
2273 * is executed as part of JOB_RESTART. */
2275 log_debug_unit(UNIT(s)->id,
2276 "%s scheduled restart job.", UNIT(s)->id);
2280 log_warning_unit(UNIT(s)->id,
2281 "%s failed to schedule restart job: %s",
2282 UNIT(s)->id, bus_error_message(&error, -r));
2283 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
2286 static void service_enter_reload(Service *s) {
2291 service_unwatch_control_pid(s);
2293 s->control_command = s->exec_command[SERVICE_EXEC_RELOAD];
2294 if (s->control_command) {
2295 s->control_command_id = SERVICE_EXEC_RELOAD;
2297 r = service_spawn(s,
2301 !s->permissions_start_only,
2302 !s->root_directory_start_only,
2310 service_set_state(s, SERVICE_RELOAD);
2312 service_enter_running(s, SERVICE_SUCCESS);
2317 log_warning_unit(UNIT(s)->id,
2318 "%s failed to run 'reload' task: %s",
2319 UNIT(s)->id, strerror(-r));
2320 s->reload_result = SERVICE_FAILURE_RESOURCES;
2321 service_enter_running(s, SERVICE_SUCCESS);
2324 static void service_run_next_control(Service *s) {
2328 assert(s->control_command);
2329 assert(s->control_command->command_next);
2331 assert(s->control_command_id != SERVICE_EXEC_START);
2333 s->control_command = s->control_command->command_next;
2334 service_unwatch_control_pid(s);
2336 r = service_spawn(s,
2340 !s->permissions_start_only,
2341 !s->root_directory_start_only,
2342 s->control_command_id == SERVICE_EXEC_START_PRE ||
2343 s->control_command_id == SERVICE_EXEC_STOP_POST,
2353 log_warning_unit(UNIT(s)->id,
2354 "%s failed to run next control task: %s",
2355 UNIT(s)->id, strerror(-r));
2357 if (s->state == SERVICE_START_PRE)
2358 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2359 else if (s->state == SERVICE_STOP)
2360 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2361 else if (s->state == SERVICE_STOP_POST)
2362 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2363 else if (s->state == SERVICE_RELOAD) {
2364 s->reload_result = SERVICE_FAILURE_RESOURCES;
2365 service_enter_running(s, SERVICE_SUCCESS);
2367 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2370 static void service_run_next_main(Service *s) {
2375 assert(s->main_command);
2376 assert(s->main_command->command_next);
2377 assert(s->type == SERVICE_ONESHOT);
2379 s->main_command = s->main_command->command_next;
2380 service_unwatch_main_pid(s);
2382 r = service_spawn(s,
2389 s->notify_access != NOTIFY_NONE,
2395 service_set_main_pid(s, pid);
2400 log_warning_unit(UNIT(s)->id,
2401 "%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
2402 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2405 static int service_start_limit_test(Service *s) {
2408 if (ratelimit_test(&s->start_limit))
2411 switch (s->start_limit_action) {
2413 case SERVICE_START_LIMIT_NONE:
2414 log_warning_unit(UNIT(s)->id,
2415 "%s start request repeated too quickly, refusing to start.",
2419 case SERVICE_START_LIMIT_REBOOT: {
2420 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2423 log_warning_unit(UNIT(s)->id,
2424 "%s start request repeated too quickly, rebooting.", UNIT(s)->id);
2426 r = manager_add_job_by_name(UNIT(s)->manager, JOB_START,
2427 SPECIAL_REBOOT_TARGET, JOB_REPLACE,
2428 true, &error, NULL);
2430 log_error_unit(UNIT(s)->id,
2431 "Failed to reboot: %s.", bus_error_message(&error, r));
2436 case SERVICE_START_LIMIT_REBOOT_FORCE:
2437 log_warning_unit(UNIT(s)->id,
2438 "%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id);
2439 UNIT(s)->manager->exit_code = MANAGER_REBOOT;
2442 case SERVICE_START_LIMIT_REBOOT_IMMEDIATE:
2443 log_warning_unit(UNIT(s)->id,
2444 "%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id);
2446 reboot(RB_AUTOBOOT);
2450 log_error_unit(UNIT(s)->id,
2451 "start limit action=%i", s->start_limit_action);
2452 assert_not_reached("Unknown StartLimitAction.");
2458 static int service_start(Unit *u) {
2459 Service *s = SERVICE(u);
2464 /* We cannot fulfill this request right now, try again later
2466 if (s->state == SERVICE_STOP ||
2467 s->state == SERVICE_STOP_SIGTERM ||
2468 s->state == SERVICE_STOP_SIGKILL ||
2469 s->state == SERVICE_STOP_POST ||
2470 s->state == SERVICE_FINAL_SIGTERM ||
2471 s->state == SERVICE_FINAL_SIGKILL)
2474 /* Already on it! */
2475 if (s->state == SERVICE_START_PRE ||
2476 s->state == SERVICE_START ||
2477 s->state == SERVICE_START_POST)
2480 /* A service that will be restarted must be stopped first to
2481 * trigger BindsTo and/or OnFailure dependencies. If a user
2482 * does not want to wait for the holdoff time to elapse, the
2483 * service should be manually restarted, not started. We
2484 * simply return EAGAIN here, so that any start jobs stay
2485 * queued, and assume that the auto restart timer will
2486 * eventually trigger the restart. */
2487 if (s->state == SERVICE_AUTO_RESTART)
2490 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED);
2492 /* Make sure we don't enter a busy loop of some kind. */
2493 r = service_start_limit_test(s);
2495 service_enter_dead(s, SERVICE_FAILURE_START_LIMIT, false);
2499 s->result = SERVICE_SUCCESS;
2500 s->reload_result = SERVICE_SUCCESS;
2501 s->main_pid_known = false;
2502 s->main_pid_alien = false;
2503 s->forbid_restart = false;
2505 service_enter_start_pre(s);
2509 static int service_stop(Unit *u) {
2510 Service *s = SERVICE(u);
2514 /* Don't create restart jobs from here. */
2515 s->forbid_restart = true;
2518 if (s->state == SERVICE_STOP ||
2519 s->state == SERVICE_STOP_SIGTERM ||
2520 s->state == SERVICE_STOP_SIGKILL ||
2521 s->state == SERVICE_STOP_POST ||
2522 s->state == SERVICE_FINAL_SIGTERM ||
2523 s->state == SERVICE_FINAL_SIGKILL)
2526 /* A restart will be scheduled or is in progress. */
2527 if (s->state == SERVICE_AUTO_RESTART) {
2528 service_set_state(s, SERVICE_DEAD);
2532 /* If there's already something running we go directly into
2534 if (s->state == SERVICE_START_PRE ||
2535 s->state == SERVICE_START ||
2536 s->state == SERVICE_START_POST ||
2537 s->state == SERVICE_RELOAD) {
2538 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2542 assert(s->state == SERVICE_RUNNING ||
2543 s->state == SERVICE_EXITED);
2545 service_enter_stop(s, SERVICE_SUCCESS);
2549 static int service_reload(Unit *u) {
2550 Service *s = SERVICE(u);
2554 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2556 service_enter_reload(s);
2560 _pure_ static bool service_can_reload(Unit *u) {
2561 Service *s = SERVICE(u);
2565 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2568 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2569 Service *s = SERVICE(u);
2575 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2576 unit_serialize_item(u, f, "result", service_result_to_string(s->result));
2577 unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
2579 if (s->control_pid > 0)
2580 unit_serialize_item_format(u, f, "control-pid", "%lu",
2581 (unsigned long) s->control_pid);
2583 if (s->main_pid_known && s->main_pid > 0)
2584 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2586 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2589 unit_serialize_item(u, f, "status-text", s->status_text);
2591 /* FIXME: There's a minor uncleanliness here: if there are
2592 * multiple commands attached here, we will start from the
2593 * first one again */
2594 if (s->control_command_id >= 0)
2595 unit_serialize_item(u, f, "control-command",
2596 service_exec_command_to_string(s->control_command_id));
2598 if (s->socket_fd >= 0) {
2601 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2604 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2607 if (s->main_exec_status.pid > 0) {
2608 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu",
2609 (unsigned long) s->main_exec_status.pid);
2610 dual_timestamp_serialize(f, "main-exec-status-start",
2611 &s->main_exec_status.start_timestamp);
2612 dual_timestamp_serialize(f, "main-exec-status-exit",
2613 &s->main_exec_status.exit_timestamp);
2615 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2616 unit_serialize_item_format(u, f, "main-exec-status-code", "%i",
2617 s->main_exec_status.code);
2618 unit_serialize_item_format(u, f, "main-exec-status-status", "%i",
2619 s->main_exec_status.status);
2622 if (dual_timestamp_is_set(&s->watchdog_timestamp))
2623 dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
2625 if (s->forbid_restart)
2626 unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart));
2631 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2632 Service *s = SERVICE(u);
2639 if (streq(key, "state")) {
2642 state = service_state_from_string(value);
2644 log_debug_unit(u->id, "Failed to parse state value %s", value);
2646 s->deserialized_state = state;
2647 } else if (streq(key, "result")) {
2650 f = service_result_from_string(value);
2652 log_debug_unit(u->id, "Failed to parse result value %s", value);
2653 else if (f != SERVICE_SUCCESS)
2656 } else if (streq(key, "reload-result")) {
2659 f = service_result_from_string(value);
2661 log_debug_unit(u->id, "Failed to parse reload result value %s", value);
2662 else if (f != SERVICE_SUCCESS)
2663 s->reload_result = f;
2665 } else if (streq(key, "control-pid")) {
2668 if (parse_pid(value, &pid) < 0)
2669 log_debug_unit(u->id, "Failed to parse control-pid value %s", value);
2671 s->control_pid = pid;
2672 } else if (streq(key, "main-pid")) {
2675 if (parse_pid(value, &pid) < 0)
2676 log_debug_unit(u->id, "Failed to parse main-pid value %s", value);
2678 service_set_main_pid(s, pid);
2679 unit_watch_pid(UNIT(s), pid);
2681 } else if (streq(key, "main-pid-known")) {
2684 b = parse_boolean(value);
2686 log_debug_unit(u->id, "Failed to parse main-pid-known value %s", value);
2688 s->main_pid_known = b;
2689 } else if (streq(key, "status-text")) {
2696 free(s->status_text);
2700 } else if (streq(key, "control-command")) {
2701 ServiceExecCommand id;
2703 id = service_exec_command_from_string(value);
2705 log_debug_unit(u->id, "Failed to parse exec-command value %s", value);
2707 s->control_command_id = id;
2708 s->control_command = s->exec_command[id];
2710 } else if (streq(key, "socket-fd")) {
2713 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2714 log_debug_unit(u->id, "Failed to parse socket-fd value %s", value);
2717 if (s->socket_fd >= 0)
2718 close_nointr_nofail(s->socket_fd);
2719 s->socket_fd = fdset_remove(fds, fd);
2721 } else if (streq(key, "main-exec-status-pid")) {
2724 if (parse_pid(value, &pid) < 0)
2725 log_debug_unit(u->id, "Failed to parse main-exec-status-pid value %s", value);
2727 s->main_exec_status.pid = pid;
2728 } else if (streq(key, "main-exec-status-code")) {
2731 if (safe_atoi(value, &i) < 0)
2732 log_debug_unit(u->id, "Failed to parse main-exec-status-code value %s", value);
2734 s->main_exec_status.code = i;
2735 } else if (streq(key, "main-exec-status-status")) {
2738 if (safe_atoi(value, &i) < 0)
2739 log_debug_unit(u->id, "Failed to parse main-exec-status-status value %s", value);
2741 s->main_exec_status.status = i;
2742 } else if (streq(key, "main-exec-status-start"))
2743 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2744 else if (streq(key, "main-exec-status-exit"))
2745 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2746 else if (streq(key, "watchdog-timestamp"))
2747 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
2748 else if (streq(key, "forbid-restart")) {
2751 b = parse_boolean(value);
2753 log_debug_unit(u->id, "Failed to parse forbid-restart value %s", value);
2755 s->forbid_restart = b;
2757 log_debug_unit(u->id, "Unknown serialization key '%s'", key);
2762 _pure_ static UnitActiveState service_active_state(Unit *u) {
2763 const UnitActiveState *table;
2767 table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
2769 return table[SERVICE(u)->state];
2772 static const char *service_sub_state_to_string(Unit *u) {
2775 return service_state_to_string(SERVICE(u)->state);
2778 static bool service_check_gc(Unit *u) {
2779 Service *s = SERVICE(u);
2783 /* Never clean up services that still have a process around,
2784 * even if the service is formally dead. */
2785 if (cgroup_good(s) > 0 ||
2786 main_pid_good(s) > 0 ||
2787 control_pid_good(s) > 0)
2790 #ifdef HAVE_SYSV_COMPAT
2798 _pure_ static bool service_check_snapshot(Unit *u) {
2799 Service *s = SERVICE(u);
2803 return (s->socket_fd < 0);
2806 static int service_retry_pid_file(Service *s) {
2809 assert(s->pid_file);
2810 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2812 r = service_load_pid_file(s, false);
2816 service_unwatch_pid_file(s);
2818 service_enter_running(s, SERVICE_SUCCESS);
2822 static int service_watch_pid_file(Service *s) {
2825 log_debug_unit(UNIT(s)->id,
2826 "Setting watch for %s's PID file %s",
2827 UNIT(s)->id, s->pid_file_pathspec->path);
2828 r = path_spec_watch(s->pid_file_pathspec, service_dispatch_io);
2832 /* the pidfile might have appeared just before we set the watch */
2833 log_debug_unit(UNIT(s)->id,
2834 "Trying to read %s's PID file %s in case it changed",
2835 UNIT(s)->id, s->pid_file_pathspec->path);
2836 service_retry_pid_file(s);
2840 log_error_unit(UNIT(s)->id,
2841 "Failed to set a watch for %s's PID file %s: %s",
2842 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
2843 service_unwatch_pid_file(s);
2847 static int service_demand_pid_file(Service *s) {
2850 assert(s->pid_file);
2851 assert(!s->pid_file_pathspec);
2853 ps = new0(PathSpec, 1);
2858 ps->path = strdup(s->pid_file);
2864 path_kill_slashes(ps->path);
2866 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2867 * keep their PID file open all the time. */
2868 ps->type = PATH_MODIFIED;
2869 ps->inotify_fd = -1;
2871 s->pid_file_pathspec = ps;
2873 return service_watch_pid_file(s);
2876 static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata) {
2877 PathSpec *p = userdata;
2882 s = SERVICE(p->unit);
2886 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2887 assert(s->pid_file_pathspec);
2888 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2890 log_debug_unit(UNIT(s)->id, "inotify event for %s", UNIT(s)->id);
2892 if (path_spec_fd_event(p, events) < 0)
2895 if (service_retry_pid_file(s) == 0)
2898 if (service_watch_pid_file(s) < 0)
2904 service_unwatch_pid_file(s);
2905 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2909 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2910 Service *s = SERVICE(u);
2916 if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) :
2917 is_clean_exit_lsb(code, status, &s->success_status))
2918 f = SERVICE_SUCCESS;
2919 else if (code == CLD_EXITED)
2920 f = SERVICE_FAILURE_EXIT_CODE;
2921 else if (code == CLD_KILLED)
2922 f = SERVICE_FAILURE_SIGNAL;
2923 else if (code == CLD_DUMPED)
2924 f = SERVICE_FAILURE_CORE_DUMP;
2926 assert_not_reached("Unknown code");
2928 if (s->main_pid == pid) {
2929 /* Forking services may occasionally move to a new PID.
2930 * As long as they update the PID file before exiting the old
2931 * PID, they're fine. */
2932 if (service_load_pid_file(s, false) == 0)
2936 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2938 if (s->main_command) {
2939 /* If this is not a forking service than the
2940 * main process got started and hence we copy
2941 * the exit status so that it is recorded both
2942 * as main and as control process exit
2945 s->main_command->exec_status = s->main_exec_status;
2947 if (s->main_command->ignore)
2948 f = SERVICE_SUCCESS;
2949 } else if (s->exec_command[SERVICE_EXEC_START]) {
2951 /* If this is a forked process, then we should
2952 * ignore the return value if this was
2953 * configured for the starter process */
2955 if (s->exec_command[SERVICE_EXEC_START]->ignore)
2956 f = SERVICE_SUCCESS;
2959 log_struct_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2961 "MESSAGE=%s: main process exited, code=%s, status=%i/%s",
2962 u->id, sigchld_code_to_string(code), status,
2963 strna(code == CLD_EXITED
2964 ? exit_status_to_string(status, EXIT_STATUS_FULL)
2965 : signal_to_string(status)),
2966 "EXIT_CODE=%s", sigchld_code_to_string(code),
2967 "EXIT_STATUS=%i", status,
2970 if (f != SERVICE_SUCCESS)
2973 if (s->main_command &&
2974 s->main_command->command_next &&
2975 f == SERVICE_SUCCESS) {
2977 /* There is another command to *
2978 * execute, so let's do that. */
2980 log_debug_unit(u->id,
2981 "%s running next main command for state %s",
2982 u->id, service_state_to_string(s->state));
2983 service_run_next_main(s);
2987 /* The service exited, so the service is officially
2989 s->main_command = NULL;
2993 case SERVICE_START_POST:
2994 case SERVICE_RELOAD:
2996 /* Need to wait until the operation is
3001 if (s->type == SERVICE_ONESHOT) {
3002 /* This was our main goal, so let's go on */
3003 if (f == SERVICE_SUCCESS)
3004 service_enter_start_post(s);
3006 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3012 case SERVICE_RUNNING:
3013 service_enter_running(s, f);
3016 case SERVICE_STOP_SIGTERM:
3017 case SERVICE_STOP_SIGKILL:
3019 if (!control_pid_good(s))
3020 service_enter_stop_post(s, f);
3022 /* If there is still a control process, wait for that first */
3026 assert_not_reached("Uh, main process died at wrong time.");
3030 } else if (s->control_pid == pid) {
3033 if (s->control_command) {
3034 exec_status_exit(&s->control_command->exec_status,
3035 &s->exec_context, pid, code, status);
3037 if (s->control_command->ignore)
3038 f = SERVICE_SUCCESS;
3041 log_full_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, u->id,
3042 "%s: control process exited, code=%s status=%i",
3043 u->id, sigchld_code_to_string(code), status);
3045 if (f != SERVICE_SUCCESS)
3048 /* Immediately get rid of the cgroup, so that the
3049 * kernel doesn't delay the cgroup empty messages for
3050 * the service cgroup any longer than necessary */
3051 service_kill_control_processes(s);
3053 if (s->control_command &&
3054 s->control_command->command_next &&
3055 f == SERVICE_SUCCESS) {
3057 /* There is another command to *
3058 * execute, so let's do that. */
3060 log_debug_unit(u->id,
3061 "%s running next control command for state %s",
3062 u->id, service_state_to_string(s->state));
3063 service_run_next_control(s);
3066 /* No further commands for this step, so let's
3067 * figure out what to do next */
3069 s->control_command = NULL;
3070 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
3072 log_debug_unit(u->id,
3073 "%s got final SIGCHLD for state %s",
3074 u->id, service_state_to_string(s->state));
3078 case SERVICE_START_PRE:
3079 if (f == SERVICE_SUCCESS)
3080 service_enter_start(s);
3082 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3086 if (s->type != SERVICE_FORKING)
3087 /* Maybe spurious event due to a reload that changed the type? */
3090 if (f != SERVICE_SUCCESS) {
3091 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3096 bool has_start_post;
3099 /* Let's try to load the pid file here if we can.
3100 * The PID file might actually be created by a START_POST
3101 * script. In that case don't worry if the loading fails. */
3103 has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
3104 r = service_load_pid_file(s, !has_start_post);
3105 if (!has_start_post && r < 0) {
3106 r = service_demand_pid_file(s);
3107 if (r < 0 || !cgroup_good(s))
3108 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3112 service_search_main_pid(s);
3114 service_enter_start_post(s);
3117 case SERVICE_START_POST:
3118 if (f != SERVICE_SUCCESS) {
3119 service_enter_stop(s, f);
3126 r = service_load_pid_file(s, true);
3128 r = service_demand_pid_file(s);
3129 if (r < 0 || !cgroup_good(s))
3130 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3134 service_search_main_pid(s);
3136 service_enter_running(s, SERVICE_SUCCESS);
3139 case SERVICE_RELOAD:
3140 if (f == SERVICE_SUCCESS) {
3141 service_load_pid_file(s, true);
3142 service_search_main_pid(s);
3145 s->reload_result = f;
3146 service_enter_running(s, SERVICE_SUCCESS);
3150 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
3153 case SERVICE_STOP_SIGTERM:
3154 case SERVICE_STOP_SIGKILL:
3155 if (main_pid_good(s) <= 0)
3156 service_enter_stop_post(s, f);
3158 /* If there is still a service
3159 * process around, wait until
3160 * that one quit, too */
3163 case SERVICE_STOP_POST:
3164 case SERVICE_FINAL_SIGTERM:
3165 case SERVICE_FINAL_SIGKILL:
3166 service_enter_dead(s, f, true);
3170 assert_not_reached("Uh, control process died at wrong time.");
3175 /* Notify clients about changed exit status */
3176 unit_add_to_dbus_queue(u);
3179 static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) {
3180 Service *s = SERVICE(userdata);
3183 assert(source == s->timer_event_source);
3187 case SERVICE_START_PRE:
3189 log_warning_unit(UNIT(s)->id,
3190 "%s operation timed out. Terminating.", UNIT(s)->id);
3191 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3194 case SERVICE_START_POST:
3195 log_warning_unit(UNIT(s)->id,
3196 "%s operation timed out. Stopping.", UNIT(s)->id);
3197 service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
3200 case SERVICE_RELOAD:
3201 log_warning_unit(UNIT(s)->id,
3202 "%s operation timed out. Stopping.", UNIT(s)->id);
3203 s->reload_result = SERVICE_FAILURE_TIMEOUT;
3204 service_enter_running(s, SERVICE_SUCCESS);
3208 log_warning_unit(UNIT(s)->id,
3209 "%s stopping timed out. Terminating.", UNIT(s)->id);
3210 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3213 case SERVICE_STOP_SIGTERM:
3214 if (s->kill_context.send_sigkill) {
3215 log_warning_unit(UNIT(s)->id,
3216 "%s stopping timed out. Killing.", UNIT(s)->id);
3217 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3219 log_warning_unit(UNIT(s)->id,
3220 "%s stopping timed out. Skipping SIGKILL.", UNIT(s)->id);
3221 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3226 case SERVICE_STOP_SIGKILL:
3227 /* Uh, we sent a SIGKILL and it is still not gone?
3228 * Must be something we cannot kill, so let's just be
3229 * weirded out and continue */
3231 log_warning_unit(UNIT(s)->id,
3232 "%s still around after SIGKILL. Ignoring.", UNIT(s)->id);
3233 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3236 case SERVICE_STOP_POST:
3237 log_warning_unit(UNIT(s)->id,
3238 "%s stopping timed out (2). Terminating.", UNIT(s)->id);
3239 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3242 case SERVICE_FINAL_SIGTERM:
3243 if (s->kill_context.send_sigkill) {
3244 log_warning_unit(UNIT(s)->id,
3245 "%s stopping timed out (2). Killing.", UNIT(s)->id);
3246 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3248 log_warning_unit(UNIT(s)->id,
3249 "%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.",
3251 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
3256 case SERVICE_FINAL_SIGKILL:
3257 log_warning_unit(UNIT(s)->id,
3258 "%s still around after SIGKILL (2). Entering failed mode.", UNIT(s)->id);
3259 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
3262 case SERVICE_AUTO_RESTART:
3263 log_info_unit(UNIT(s)->id,
3264 "%s holdoff time over, scheduling restart.", UNIT(s)->id);
3265 service_enter_restart(s);
3269 assert_not_reached("Timeout at wrong time.");
3275 static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) {
3276 Service *s = SERVICE(userdata);
3279 assert(source == s->watchdog_event_source);
3281 log_error_unit(UNIT(s)->id, "%s watchdog timeout!", UNIT(s)->id);
3282 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_WATCHDOG);
3287 static void service_notify_cgroup_empty_event(Unit *u) {
3288 Service *s = SERVICE(u);
3292 log_debug_unit(u->id, "%s: cgroup is empty", u->id);
3296 /* Waiting for SIGCHLD is usually more interesting,
3297 * because it includes return codes/signals. Which is
3298 * why we ignore the cgroup events for most cases,
3299 * except when we don't know pid which to expect the
3303 case SERVICE_START_POST:
3304 /* If we were hoping for the daemon to write its PID file,
3305 * we can give up now. */
3306 if (s->pid_file_pathspec) {
3307 log_warning_unit(u->id,
3308 "%s never wrote its PID file. Failing.", UNIT(s)->id);
3309 service_unwatch_pid_file(s);
3310 if (s->state == SERVICE_START)
3311 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3313 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3317 case SERVICE_RUNNING:
3318 /* service_enter_running() will figure out what to do */
3319 service_enter_running(s, SERVICE_SUCCESS);
3322 case SERVICE_STOP_SIGTERM:
3323 case SERVICE_STOP_SIGKILL:
3325 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3326 service_enter_stop_post(s, SERVICE_SUCCESS);
3330 case SERVICE_FINAL_SIGTERM:
3331 case SERVICE_FINAL_SIGKILL:
3332 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3333 service_enter_dead(s, SERVICE_SUCCESS, true);
3342 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3343 Service *s = SERVICE(u);
3348 if (s->notify_access == NOTIFY_NONE) {
3349 log_warning_unit(u->id,
3350 "%s: Got notification message from PID %lu, but reception is disabled.",
3351 u->id, (unsigned long) pid);
3355 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3356 log_warning_unit(u->id,
3357 "%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
3358 u->id, (unsigned long) pid, (unsigned long) s->main_pid);
3362 log_debug_unit(u->id,
3363 "%s: Got message", u->id);
3365 /* Interpret MAINPID= */
3366 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3367 (s->state == SERVICE_START ||
3368 s->state == SERVICE_START_POST ||
3369 s->state == SERVICE_RUNNING ||
3370 s->state == SERVICE_RELOAD)) {
3372 if (parse_pid(e + 8, &pid) < 0)
3373 log_warning_unit(u->id,
3374 "Failed to parse notification message %s", e);
3376 log_debug_unit(u->id,
3377 "%s: got %s", u->id, e);
3378 service_set_main_pid(s, pid);
3379 unit_watch_pid(UNIT(s), pid);
3383 /* Interpret READY= */
3384 if (s->type == SERVICE_NOTIFY &&
3385 s->state == SERVICE_START &&
3386 strv_find(tags, "READY=1")) {
3387 log_debug_unit(u->id,
3388 "%s: got READY=1", u->id);
3390 service_enter_start_post(s);
3393 /* Interpret STATUS= */
3394 e = strv_find_prefix(tags, "STATUS=");
3400 if (!utf8_is_valid(e+7)) {
3401 log_warning_unit(u->id,
3402 "Status message in notification is not UTF-8 clean.");
3408 log_error_unit(u->id,
3409 "Failed to allocate string.");
3413 log_debug_unit(u->id,
3414 "%s: got %s", u->id, e);
3416 free(s->status_text);
3419 free(s->status_text);
3420 s->status_text = NULL;
3425 if (strv_find(tags, "WATCHDOG=1")) {
3426 log_debug_unit(u->id, "%s: got WATCHDOG=1", u->id);
3427 service_reset_watchdog(s);
3430 /* Notify clients about changed status or main pid */
3431 unit_add_to_dbus_queue(u);
3434 #ifdef HAVE_SYSV_COMPAT
3436 static int service_enumerate(Manager *m) {
3439 _cleanup_closedir_ DIR *d = NULL;
3440 _cleanup_free_ char *path = NULL, *fpath = NULL, *name = NULL;
3441 Set *runlevel_services[ELEMENTSOF(rcnd_table)] = {};
3442 _cleanup_set_free_ Set *shutdown_services = NULL;
3449 if (m->running_as != SYSTEMD_SYSTEM)
3452 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3453 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3457 path = strjoin(*p, "/", rcnd_table[i].path, NULL);
3468 if (errno != ENOENT)
3469 log_warning("opendir(%s) failed: %m", path);
3474 while ((de = readdir(d))) {
3477 if (ignore_file(de->d_name))
3480 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3483 if (strlen(de->d_name) < 4)
3486 a = undecchar(de->d_name[1]);
3487 b = undecchar(de->d_name[2]);
3493 fpath = strjoin(path, "/", de->d_name, NULL);
3499 if (access(fpath, X_OK) < 0) {
3501 if (errno != ENOENT)
3502 log_warning("access() failed on %s: %m", fpath);
3508 name = sysv_translate_name(de->d_name + 3);
3514 r = manager_load_unit_prepare(m, name, NULL, NULL, &service);
3516 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3520 if (de->d_name[0] == 'S') {
3522 if (rcnd_table[i].type == RUNLEVEL_UP) {
3523 SERVICE(service)->sysv_start_priority_from_rcnd =
3524 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3526 SERVICE(service)->sysv_enabled = true;
3529 r = set_ensure_allocated(&runlevel_services[i],
3530 trivial_hash_func, trivial_compare_func);
3534 r = set_put(runlevel_services[i], service);
3538 } else if (de->d_name[0] == 'K' &&
3539 (rcnd_table[i].type == RUNLEVEL_DOWN)) {
3541 r = set_ensure_allocated(&shutdown_services,
3542 trivial_hash_func, trivial_compare_func);
3546 r = set_put(shutdown_services, service);
3553 /* Now we loaded all stubs and are aware of the lowest
3554 start-up priority for all services, not let's actually load
3555 the services, this will also tell us which services are
3556 actually native now */
3557 manager_dispatch_load_queue(m);
3559 /* If this is a native service, rely on native ways to pull in
3560 * a service, don't pull it in via sysv rcN.d links. */
3561 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3562 SET_FOREACH(service, runlevel_services[i], j) {
3563 service = unit_follow_merge(service);
3565 if (service->fragment_path)
3568 r = unit_add_two_dependencies_by_name_inverse(
3569 service, UNIT_AFTER, UNIT_WANTS,
3570 rcnd_table[i].target, NULL, true);
3575 /* We honour K links only for halt/reboot. For the normal
3576 * runlevels we assume the stop jobs will be implicitly added
3577 * by the core logic. Also, we don't really distinguish here
3578 * between the runlevels 0 and 6 and just add them to the
3579 * special shutdown target. */
3580 SET_FOREACH(service, shutdown_services, j) {
3581 service = unit_follow_merge(service);
3583 if (service->fragment_path)
3586 r = unit_add_two_dependencies_by_name(
3587 service, UNIT_BEFORE, UNIT_CONFLICTS,
3588 SPECIAL_SHUTDOWN_TARGET, NULL, true);
3597 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3598 set_free(runlevel_services[i]);
3604 static void service_bus_name_owner_change(
3607 const char *old_owner,
3608 const char *new_owner) {
3610 Service *s = SERVICE(u);
3616 assert(streq(s->bus_name, name));
3617 assert(old_owner || new_owner);
3619 if (old_owner && new_owner)
3620 log_debug_unit(u->id,
3621 "%s's D-Bus name %s changed owner from %s to %s",
3622 u->id, name, old_owner, new_owner);
3624 log_debug_unit(u->id,
3625 "%s's D-Bus name %s no longer registered by %s",
3626 u->id, name, old_owner);
3628 log_debug_unit(u->id,
3629 "%s's D-Bus name %s now registered by %s",
3630 u->id, name, new_owner);
3632 s->bus_name_good = !!new_owner;
3634 if (s->type == SERVICE_DBUS) {
3636 /* service_enter_running() will figure out what to
3638 if (s->state == SERVICE_RUNNING)
3639 service_enter_running(s, SERVICE_SUCCESS);
3640 else if (s->state == SERVICE_START && new_owner)
3641 service_enter_start_post(s);
3643 } else if (new_owner &&
3645 (s->state == SERVICE_START ||
3646 s->state == SERVICE_START_POST ||
3647 s->state == SERVICE_RUNNING ||
3648 s->state == SERVICE_RELOAD)) {
3650 _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
3653 /* Try to acquire PID from bus service */
3655 r = sd_bus_get_owner(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds);
3657 r = sd_bus_creds_get_pid(creds, &pid);
3659 log_debug_unit(u->id, "%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
3661 service_set_main_pid(s, pid);
3662 unit_watch_pid(UNIT(s), pid);
3667 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3672 /* This is called by the socket code when instantiating a new
3673 * service for a stream socket and the socket needs to be
3676 if (UNIT(s)->load_state != UNIT_LOADED)
3679 if (s->socket_fd >= 0)
3682 if (s->state != SERVICE_DEAD)
3687 unit_ref_set(&s->accept_socket, UNIT(sock));
3689 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3692 static void service_reset_failed(Unit *u) {
3693 Service *s = SERVICE(u);
3697 if (s->state == SERVICE_FAILED)
3698 service_set_state(s, SERVICE_DEAD);
3700 s->result = SERVICE_SUCCESS;
3701 s->reload_result = SERVICE_SUCCESS;
3703 RATELIMIT_RESET(s->start_limit);
3706 static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) {
3707 Service *s = SERVICE(u);
3709 return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error);
3712 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3713 [SERVICE_DEAD] = "dead",
3714 [SERVICE_START_PRE] = "start-pre",
3715 [SERVICE_START] = "start",
3716 [SERVICE_START_POST] = "start-post",
3717 [SERVICE_RUNNING] = "running",
3718 [SERVICE_EXITED] = "exited",
3719 [SERVICE_RELOAD] = "reload",
3720 [SERVICE_STOP] = "stop",
3721 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3722 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3723 [SERVICE_STOP_POST] = "stop-post",
3724 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3725 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3726 [SERVICE_FAILED] = "failed",
3727 [SERVICE_AUTO_RESTART] = "auto-restart",
3730 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3732 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3733 [SERVICE_RESTART_NO] = "no",
3734 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3735 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3736 [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog",
3737 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3738 [SERVICE_RESTART_ALWAYS] = "always"
3741 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3743 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3744 [SERVICE_SIMPLE] = "simple",
3745 [SERVICE_FORKING] = "forking",
3746 [SERVICE_ONESHOT] = "oneshot",
3747 [SERVICE_DBUS] = "dbus",
3748 [SERVICE_NOTIFY] = "notify",
3749 [SERVICE_IDLE] = "idle"
3752 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3754 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3755 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3756 [SERVICE_EXEC_START] = "ExecStart",
3757 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3758 [SERVICE_EXEC_RELOAD] = "ExecReload",
3759 [SERVICE_EXEC_STOP] = "ExecStop",
3760 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3763 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3765 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3766 [NOTIFY_NONE] = "none",
3767 [NOTIFY_MAIN] = "main",
3768 [NOTIFY_ALL] = "all"
3771 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3773 static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
3774 [SERVICE_SUCCESS] = "success",
3775 [SERVICE_FAILURE_RESOURCES] = "resources",
3776 [SERVICE_FAILURE_TIMEOUT] = "timeout",
3777 [SERVICE_FAILURE_EXIT_CODE] = "exit-code",
3778 [SERVICE_FAILURE_SIGNAL] = "signal",
3779 [SERVICE_FAILURE_CORE_DUMP] = "core-dump",
3780 [SERVICE_FAILURE_WATCHDOG] = "watchdog",
3781 [SERVICE_FAILURE_START_LIMIT] = "start-limit"
3784 DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
3786 static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = {
3787 [SERVICE_START_LIMIT_NONE] = "none",
3788 [SERVICE_START_LIMIT_REBOOT] = "reboot",
3789 [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force",
3790 [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate"
3792 DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction);
3794 const UnitVTable service_vtable = {
3795 .object_size = sizeof(Service),
3796 .exec_context_offset = offsetof(Service, exec_context),
3797 .cgroup_context_offset = offsetof(Service, cgroup_context),
3798 .kill_context_offset = offsetof(Service, kill_context),
3799 .exec_runtime_offset = offsetof(Service, exec_runtime),
3805 .private_section = "Service",
3807 .init = service_init,
3808 .done = service_done,
3809 .load = service_load,
3811 .coldplug = service_coldplug,
3813 .dump = service_dump,
3815 .start = service_start,
3816 .stop = service_stop,
3817 .reload = service_reload,
3819 .can_reload = service_can_reload,
3821 .kill = service_kill,
3823 .serialize = service_serialize,
3824 .deserialize_item = service_deserialize_item,
3826 .active_state = service_active_state,
3827 .sub_state_to_string = service_sub_state_to_string,
3829 .check_gc = service_check_gc,
3830 .check_snapshot = service_check_snapshot,
3832 .sigchld_event = service_sigchld_event,
3834 .reset_failed = service_reset_failed,
3836 .notify_cgroup_empty = service_notify_cgroup_empty_event,
3837 .notify_message = service_notify_message,
3839 .bus_name_owner_change = service_bus_name_owner_change,
3841 .bus_interface = "org.freedesktop.systemd1.Service",
3842 .bus_vtable = bus_service_vtable,
3843 .bus_changing_properties = bus_service_changing_properties,
3844 .bus_set_property = bus_service_set_property,
3845 .bus_commit_properties = bus_service_commit_properties,
3847 #ifdef HAVE_SYSV_COMPAT
3848 .enumerate = service_enumerate,
3851 .can_transient = true,
3853 .status_message_formats = {
3854 .starting_stopping = {
3855 [0] = "Starting %s...",
3856 [1] = "Stopping %s...",
3858 .finished_start_job = {
3859 [JOB_DONE] = "Started %s.",
3860 [JOB_FAILED] = "Failed to start %s.",
3861 [JOB_DEPENDENCY] = "Dependency failed for %s.",
3862 [JOB_TIMEOUT] = "Timed out starting %s.",
3864 .finished_stop_job = {
3865 [JOB_DONE] = "Stopped %s.",
3866 [JOB_FAILED] = "Stopped (with error) %s.",
3867 [JOB_TIMEOUT] = "Timed out stopping %s.",