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 r = get_process_state(pid);
1382 log_info_unit(UNIT(s)->id, "Failed to read /proc/%d/stat: %s",
1385 } else if (r == 'Z') {
1387 log_info_unit(UNIT(s)->id,
1388 "PID "PID_FMT" read from file %s is a zombie.",
1393 if (s->main_pid_known) {
1394 if (pid == s->main_pid)
1397 log_debug_unit(UNIT(s)->id,
1398 "Main PID changing: "PID_FMT" -> "PID_FMT,
1400 service_unwatch_main_pid(s);
1401 s->main_pid_known = false;
1403 log_debug_unit(UNIT(s)->id,
1404 "Main PID loaded: "PID_FMT, pid);
1406 r = service_set_main_pid(s, pid);
1410 r = unit_watch_pid(UNIT(s), pid);
1412 /* FIXME: we need to do something here */
1413 log_warning_unit(UNIT(s)->id,
1414 "Failed to watch PID "PID_FMT" from service %s",
1422 static int service_search_main_pid(Service *s) {
1428 /* If we know it anyway, don't ever fallback to unreliable
1430 if (s->main_pid_known)
1433 if (!s->guess_main_pid)
1436 assert(s->main_pid <= 0);
1438 pid = unit_search_main_pid(UNIT(s));
1442 log_debug_unit(UNIT(s)->id,
1443 "Main PID guessed: "PID_FMT, pid);
1444 r = service_set_main_pid(s, pid);
1448 r = unit_watch_pid(UNIT(s), pid);
1450 /* FIXME: we need to do something here */
1451 log_warning_unit(UNIT(s)->id,
1452 "Failed to watch PID "PID_FMT" from service %s",
1459 static void service_set_state(Service *s, ServiceState state) {
1460 ServiceState old_state;
1461 const UnitActiveState *table;
1465 table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
1467 old_state = s->state;
1470 service_unwatch_pid_file(s);
1473 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1475 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1477 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL,
1478 SERVICE_AUTO_RESTART))
1479 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1482 SERVICE_START, SERVICE_START_POST,
1483 SERVICE_RUNNING, SERVICE_RELOAD,
1484 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1486 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1487 service_unwatch_main_pid(s);
1488 s->main_command = NULL;
1492 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1494 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1496 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1497 service_unwatch_control_pid(s);
1498 s->control_command = NULL;
1499 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1502 if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART))
1503 unit_unwatch_all_pids(UNIT(s));
1506 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1507 SERVICE_RUNNING, SERVICE_RELOAD,
1508 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
1509 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) &&
1510 !(state == SERVICE_DEAD && UNIT(s)->job)) {
1511 service_close_socket_fd(s);
1512 service_connection_unref(s);
1515 if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
1516 service_stop_watchdog(s);
1518 /* For the inactive states unit_notify() will trim the cgroup,
1519 * but for exit we have to do that ourselves... */
1520 if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
1521 unit_destroy_cgroup(UNIT(s));
1523 /* For remain_after_exit services, let's see if we can "release" the
1524 * hold on the console, since unit_notify() only does that in case of
1525 * change of state */
1526 if (state == SERVICE_EXITED && s->remain_after_exit &&
1527 UNIT(s)->manager->n_on_console > 0) {
1528 ExecContext *ec = unit_get_exec_context(UNIT(s));
1529 if (ec && exec_context_may_touch_console(ec)) {
1530 Manager *m = UNIT(s)->manager;
1533 if (m->n_on_console == 0)
1534 /* unset no_console_output flag, since the console is free */
1535 m->no_console_output = false;
1539 if (old_state != state)
1540 log_debug_unit(UNIT(s)->id, "%s changed %s -> %s", UNIT(s)->id, service_state_to_string(old_state), service_state_to_string(state));
1542 unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS);
1543 s->reload_result = SERVICE_SUCCESS;
1546 static int service_coldplug(Unit *u) {
1547 Service *s = SERVICE(u);
1551 assert(s->state == SERVICE_DEAD);
1553 if (s->deserialized_state != s->state) {
1555 if (IN_SET(s->deserialized_state,
1556 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1558 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1560 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1564 k = IN_SET(s->deserialized_state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD) ? s->timeout_start_usec : s->timeout_stop_usec;
1566 /* For the start/stop timeouts 0 means off */
1568 r = service_arm_timer(s, k);
1574 if (s->deserialized_state == SERVICE_AUTO_RESTART) {
1576 /* The restart timeouts 0 means immediately */
1577 r = service_arm_timer(s, s->restart_usec);
1582 if (pid_valid(s->main_pid) &&
1583 ((s->deserialized_state == SERVICE_START && IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_ONESHOT, SERVICE_NOTIFY)) ||
1584 IN_SET(s->deserialized_state,
1585 SERVICE_START, SERVICE_START_POST,
1586 SERVICE_RUNNING, SERVICE_RELOAD,
1587 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1589 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) {
1590 r = unit_watch_pid(UNIT(s), s->main_pid);
1595 if (pid_valid(s->control_pid) &&
1596 IN_SET(s->deserialized_state,
1597 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1599 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1601 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1602 r = unit_watch_pid(UNIT(s), s->control_pid);
1607 if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART))
1608 unit_watch_all_pids(UNIT(s));
1610 if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
1611 service_start_watchdog(s);
1613 service_set_state(s, s->deserialized_state);
1619 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1623 unsigned rn_fds = 0;
1630 if (s->socket_fd >= 0)
1633 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
1638 if (u->type != UNIT_SOCKET)
1643 r = socket_collect_fds(sock, &cfds, &cn_fds);
1656 t = new(int, rn_fds+cn_fds);
1663 memcpy(t, rfds, rn_fds * sizeof(int));
1664 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1669 rn_fds = rn_fds+cn_fds;
1684 static int service_spawn(
1689 bool apply_permissions,
1691 bool apply_tty_stdin,
1692 bool set_notify_socket,
1699 _cleanup_free_ int *fdsbuf = NULL;
1700 unsigned n_fds = 0, n_env = 0;
1701 _cleanup_strv_free_ char
1702 **argv = NULL, **final_env = NULL, **our_env = NULL;
1709 unit_realize_cgroup(UNIT(s));
1711 r = unit_setup_exec_runtime(UNIT(s));
1716 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1717 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1718 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1720 if (s->socket_fd >= 0) {
1721 fds = &s->socket_fd;
1724 r = service_collect_fds(s, &fdsbuf, &n_fds);
1732 if (timeout && s->timeout_start_usec > 0) {
1733 r = service_arm_timer(s, s->timeout_start_usec);
1737 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1739 r = unit_full_printf_strv(UNIT(s), c->argv, &argv);
1743 our_env = new0(char*, 4);
1749 if (set_notify_socket)
1750 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
1755 if (s->main_pid > 0)
1756 if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) {
1761 if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM)
1762 if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid()) < 0) {
1767 final_env = strv_env_merge(2, UNIT(s)->manager->environment, our_env, NULL);
1773 if (is_control && UNIT(s)->cgroup_path) {
1774 path = strappenda(UNIT(s)->cgroup_path, "/control");
1775 cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
1777 path = UNIT(s)->cgroup_path;
1787 UNIT(s)->manager->confirm_spawn,
1788 UNIT(s)->manager->cgroup_supported,
1792 s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL,
1798 r = unit_watch_pid(UNIT(s), pid);
1800 /* FIXME: we need to do something here */
1809 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1814 static int main_pid_good(Service *s) {
1817 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1820 /* If we know the pid file, then lets just check if it is
1822 if (s->main_pid_known) {
1824 /* If it's an alien child let's check if it is still
1826 if (s->main_pid_alien && s->main_pid > 0)
1827 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1829 /* .. otherwise assume we'll get a SIGCHLD for it,
1830 * which we really should wait for to collect exit
1831 * status and code */
1832 return s->main_pid > 0;
1835 /* We don't know the pid */
1839 _pure_ static int control_pid_good(Service *s) {
1842 return s->control_pid > 0;
1845 static int cgroup_good(Service *s) {
1850 if (!UNIT(s)->cgroup_path)
1853 r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path, true);
1860 static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
1864 if (f != SERVICE_SUCCESS)
1867 service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
1869 if (allow_restart &&
1870 !s->forbid_restart &&
1871 (s->restart == SERVICE_RESTART_ALWAYS ||
1872 (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
1873 (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
1874 (s->restart == SERVICE_RESTART_ON_WATCHDOG && s->result == SERVICE_FAILURE_WATCHDOG) ||
1875 (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL ||
1876 s->result == SERVICE_FAILURE_CORE_DUMP))) &&
1877 (s->result != SERVICE_FAILURE_EXIT_CODE ||
1878 !set_contains(s->restart_ignore_status.code, INT_TO_PTR(s->main_exec_status.status))) &&
1879 (s->result != SERVICE_FAILURE_SIGNAL ||
1880 !set_contains(s->restart_ignore_status.signal, INT_TO_PTR(s->main_exec_status.status)))) {
1882 r = service_arm_timer(s, s->restart_usec);
1886 service_set_state(s, SERVICE_AUTO_RESTART);
1889 s->forbid_restart = false;
1891 /* we want fresh tmpdirs in case service is started again immediately */
1892 exec_runtime_destroy(s->exec_runtime);
1893 s->exec_runtime = exec_runtime_unref(s->exec_runtime);
1895 /* Try to delete the pid file. At this point it will be
1896 * out-of-date, and some software might be confused by it, so
1897 * let's remove it. */
1899 unlink_noerrno(s->pid_file);
1904 log_warning_unit(UNIT(s)->id,
1905 "%s failed to run install restart timer: %s",
1906 UNIT(s)->id, strerror(-r));
1907 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
1910 static void service_enter_stop_post(Service *s, ServiceResult f) {
1914 if (f != SERVICE_SUCCESS)
1917 service_unwatch_control_pid(s);
1918 unit_watch_all_pids(UNIT(s));
1920 s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST];
1921 if (s->control_command) {
1922 s->control_command_id = SERVICE_EXEC_STOP_POST;
1924 r = service_spawn(s,
1928 !s->permissions_start_only,
1929 !s->root_directory_start_only,
1937 service_set_state(s, SERVICE_STOP_POST);
1939 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS);
1944 log_warning_unit(UNIT(s)->id,
1945 "%s failed to run 'stop-post' task: %s",
1946 UNIT(s)->id, strerror(-r));
1947 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
1950 static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
1955 if (f != SERVICE_SUCCESS)
1958 unit_watch_all_pids(UNIT(s));
1960 r = unit_kill_context(
1963 state != SERVICE_STOP_SIGTERM && state != SERVICE_FINAL_SIGTERM,
1972 if (s->timeout_stop_usec > 0) {
1973 r = service_arm_timer(s, s->timeout_stop_usec);
1978 service_set_state(s, state);
1979 } else if (state == SERVICE_STOP_SIGTERM)
1980 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS);
1981 else if (state == SERVICE_STOP_SIGKILL)
1982 service_enter_stop_post(s, SERVICE_SUCCESS);
1983 else if (state == SERVICE_FINAL_SIGTERM)
1984 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS);
1986 service_enter_dead(s, SERVICE_SUCCESS, true);
1991 log_warning_unit(UNIT(s)->id,
1992 "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
1994 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1995 service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
1997 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2000 static void service_enter_stop(Service *s, ServiceResult f) {
2005 if (f != SERVICE_SUCCESS)
2008 service_unwatch_control_pid(s);
2009 unit_watch_all_pids(UNIT(s));
2011 s->control_command = s->exec_command[SERVICE_EXEC_STOP];
2012 if (s->control_command) {
2013 s->control_command_id = SERVICE_EXEC_STOP;
2015 r = service_spawn(s,
2019 !s->permissions_start_only,
2020 !s->root_directory_start_only,
2028 service_set_state(s, SERVICE_STOP);
2030 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2035 log_warning_unit(UNIT(s)->id,
2036 "%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
2037 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2040 static void service_enter_running(Service *s, ServiceResult f) {
2041 int main_pid_ok, cgroup_ok;
2044 if (f != SERVICE_SUCCESS)
2047 main_pid_ok = main_pid_good(s);
2048 cgroup_ok = cgroup_good(s);
2050 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2051 (s->bus_name_good || s->type != SERVICE_DBUS))
2052 service_set_state(s, SERVICE_RUNNING);
2053 else if (s->remain_after_exit)
2054 service_set_state(s, SERVICE_EXITED);
2056 service_enter_stop(s, SERVICE_SUCCESS);
2059 static void service_enter_start_post(Service *s) {
2063 service_unwatch_control_pid(s);
2064 service_reset_watchdog(s);
2066 s->control_command = s->exec_command[SERVICE_EXEC_START_POST];
2067 if (s->control_command) {
2068 s->control_command_id = SERVICE_EXEC_START_POST;
2070 r = service_spawn(s,
2074 !s->permissions_start_only,
2075 !s->root_directory_start_only,
2083 service_set_state(s, SERVICE_START_POST);
2085 service_enter_running(s, SERVICE_SUCCESS);
2090 log_warning_unit(UNIT(s)->id,
2091 "%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
2092 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2095 static void service_kill_control_processes(Service *s) {
2098 if (!UNIT(s)->cgroup_path)
2101 p = strappenda(UNIT(s)->cgroup_path, "/control");
2102 cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, p, SIGKILL, true, true, true, NULL);
2105 static void service_enter_start(Service *s) {
2112 assert(s->exec_command[SERVICE_EXEC_START]);
2113 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2115 service_unwatch_control_pid(s);
2116 service_unwatch_main_pid(s);
2118 /* We want to ensure that nobody leaks processes from
2119 * START_PRE here, so let's go on a killing spree, People
2120 * should not spawn long running processes from START_PRE. */
2121 service_kill_control_processes(s);
2123 if (s->type == SERVICE_FORKING) {
2124 s->control_command_id = SERVICE_EXEC_START;
2125 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2127 s->main_command = NULL;
2129 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2130 s->control_command = NULL;
2132 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2135 r = service_spawn(s,
2137 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS ||
2138 s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT,
2143 s->notify_access != NOTIFY_NONE,
2149 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) {
2150 /* For simple services we immediately start
2151 * the START_POST binaries. */
2153 service_set_main_pid(s, pid);
2154 service_enter_start_post(s);
2156 } else if (s->type == SERVICE_FORKING) {
2158 /* For forking services we wait until the start
2159 * process exited. */
2161 s->control_pid = pid;
2162 service_set_state(s, SERVICE_START);
2164 } else if (s->type == SERVICE_ONESHOT ||
2165 s->type == SERVICE_DBUS ||
2166 s->type == SERVICE_NOTIFY) {
2168 /* For oneshot services we wait until the start
2169 * process exited, too, but it is our main process. */
2171 /* For D-Bus services we know the main pid right away,
2172 * but wait for the bus name to appear on the
2173 * bus. Notify services are similar. */
2175 service_set_main_pid(s, pid);
2176 service_set_state(s, SERVICE_START);
2178 assert_not_reached("Unknown service type");
2183 log_warning_unit(UNIT(s)->id,
2184 "%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
2185 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2188 static void service_enter_start_pre(Service *s) {
2193 service_unwatch_control_pid(s);
2195 s->control_command = s->exec_command[SERVICE_EXEC_START_PRE];
2196 if (s->control_command) {
2197 /* Before we start anything, let's clear up what might
2198 * be left from previous runs. */
2199 service_kill_control_processes(s);
2201 s->control_command_id = SERVICE_EXEC_START_PRE;
2203 r = service_spawn(s,
2207 !s->permissions_start_only,
2208 !s->root_directory_start_only,
2216 service_set_state(s, SERVICE_START_PRE);
2218 service_enter_start(s);
2223 log_warning_unit(UNIT(s)->id,
2224 "%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
2225 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2228 static void service_enter_restart(Service *s) {
2229 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2234 if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) {
2235 /* Don't restart things if we are going down anyway */
2236 log_info_unit(UNIT(s)->id,
2237 "Stop job pending for unit, delaying automatic restart.");
2239 r = service_arm_timer(s, s->restart_usec);
2246 /* Any units that are bound to this service must also be
2247 * restarted. We use JOB_RESTART (instead of the more obvious
2248 * JOB_START) here so that those dependency jobs will be added
2250 r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL);
2254 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
2255 * it will be canceled as part of the service_stop() call that
2256 * is executed as part of JOB_RESTART. */
2258 log_debug_unit(UNIT(s)->id,
2259 "%s scheduled restart job.", UNIT(s)->id);
2263 log_warning_unit(UNIT(s)->id,
2264 "%s failed to schedule restart job: %s",
2265 UNIT(s)->id, bus_error_message(&error, -r));
2266 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
2269 static void service_enter_reload(Service *s) {
2274 service_unwatch_control_pid(s);
2276 s->control_command = s->exec_command[SERVICE_EXEC_RELOAD];
2277 if (s->control_command) {
2278 s->control_command_id = SERVICE_EXEC_RELOAD;
2280 r = service_spawn(s,
2284 !s->permissions_start_only,
2285 !s->root_directory_start_only,
2293 service_set_state(s, SERVICE_RELOAD);
2295 service_enter_running(s, SERVICE_SUCCESS);
2300 log_warning_unit(UNIT(s)->id,
2301 "%s failed to run 'reload' task: %s",
2302 UNIT(s)->id, strerror(-r));
2303 s->reload_result = SERVICE_FAILURE_RESOURCES;
2304 service_enter_running(s, SERVICE_SUCCESS);
2307 static void service_run_next_control(Service *s) {
2311 assert(s->control_command);
2312 assert(s->control_command->command_next);
2314 assert(s->control_command_id != SERVICE_EXEC_START);
2316 s->control_command = s->control_command->command_next;
2317 service_unwatch_control_pid(s);
2319 r = service_spawn(s,
2323 !s->permissions_start_only,
2324 !s->root_directory_start_only,
2325 s->control_command_id == SERVICE_EXEC_START_PRE ||
2326 s->control_command_id == SERVICE_EXEC_STOP_POST,
2336 log_warning_unit(UNIT(s)->id,
2337 "%s failed to run next control task: %s",
2338 UNIT(s)->id, strerror(-r));
2340 if (s->state == SERVICE_START_PRE)
2341 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2342 else if (s->state == SERVICE_STOP)
2343 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2344 else if (s->state == SERVICE_STOP_POST)
2345 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2346 else if (s->state == SERVICE_RELOAD) {
2347 s->reload_result = SERVICE_FAILURE_RESOURCES;
2348 service_enter_running(s, SERVICE_SUCCESS);
2350 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2353 static void service_run_next_main(Service *s) {
2358 assert(s->main_command);
2359 assert(s->main_command->command_next);
2360 assert(s->type == SERVICE_ONESHOT);
2362 s->main_command = s->main_command->command_next;
2363 service_unwatch_main_pid(s);
2365 r = service_spawn(s,
2372 s->notify_access != NOTIFY_NONE,
2378 service_set_main_pid(s, pid);
2383 log_warning_unit(UNIT(s)->id,
2384 "%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
2385 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2388 static int service_start_limit_test(Service *s) {
2391 if (ratelimit_test(&s->start_limit))
2394 switch (s->start_limit_action) {
2396 case SERVICE_START_LIMIT_NONE:
2397 log_warning_unit(UNIT(s)->id,
2398 "%s start request repeated too quickly, refusing to start.",
2402 case SERVICE_START_LIMIT_REBOOT: {
2403 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2406 log_warning_unit(UNIT(s)->id,
2407 "%s start request repeated too quickly, rebooting.", UNIT(s)->id);
2409 r = manager_add_job_by_name(UNIT(s)->manager, JOB_START,
2410 SPECIAL_REBOOT_TARGET, JOB_REPLACE,
2411 true, &error, NULL);
2413 log_error_unit(UNIT(s)->id,
2414 "Failed to reboot: %s.", bus_error_message(&error, r));
2419 case SERVICE_START_LIMIT_REBOOT_FORCE:
2420 log_warning_unit(UNIT(s)->id,
2421 "%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id);
2422 UNIT(s)->manager->exit_code = MANAGER_REBOOT;
2425 case SERVICE_START_LIMIT_REBOOT_IMMEDIATE:
2426 log_warning_unit(UNIT(s)->id,
2427 "%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id);
2429 reboot(RB_AUTOBOOT);
2433 log_error_unit(UNIT(s)->id,
2434 "start limit action=%i", s->start_limit_action);
2435 assert_not_reached("Unknown StartLimitAction.");
2441 static int service_start(Unit *u) {
2442 Service *s = SERVICE(u);
2447 /* We cannot fulfill this request right now, try again later
2449 if (s->state == SERVICE_STOP ||
2450 s->state == SERVICE_STOP_SIGTERM ||
2451 s->state == SERVICE_STOP_SIGKILL ||
2452 s->state == SERVICE_STOP_POST ||
2453 s->state == SERVICE_FINAL_SIGTERM ||
2454 s->state == SERVICE_FINAL_SIGKILL)
2457 /* Already on it! */
2458 if (s->state == SERVICE_START_PRE ||
2459 s->state == SERVICE_START ||
2460 s->state == SERVICE_START_POST)
2463 /* A service that will be restarted must be stopped first to
2464 * trigger BindsTo and/or OnFailure dependencies. If a user
2465 * does not want to wait for the holdoff time to elapse, the
2466 * service should be manually restarted, not started. We
2467 * simply return EAGAIN here, so that any start jobs stay
2468 * queued, and assume that the auto restart timer will
2469 * eventually trigger the restart. */
2470 if (s->state == SERVICE_AUTO_RESTART)
2473 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED);
2475 /* Make sure we don't enter a busy loop of some kind. */
2476 r = service_start_limit_test(s);
2478 service_enter_dead(s, SERVICE_FAILURE_START_LIMIT, false);
2482 s->result = SERVICE_SUCCESS;
2483 s->reload_result = SERVICE_SUCCESS;
2484 s->main_pid_known = false;
2485 s->main_pid_alien = false;
2486 s->forbid_restart = false;
2488 service_enter_start_pre(s);
2492 static int service_stop(Unit *u) {
2493 Service *s = SERVICE(u);
2497 /* Don't create restart jobs from here. */
2498 s->forbid_restart = true;
2501 if (s->state == SERVICE_STOP ||
2502 s->state == SERVICE_STOP_SIGTERM ||
2503 s->state == SERVICE_STOP_SIGKILL ||
2504 s->state == SERVICE_STOP_POST ||
2505 s->state == SERVICE_FINAL_SIGTERM ||
2506 s->state == SERVICE_FINAL_SIGKILL)
2509 /* A restart will be scheduled or is in progress. */
2510 if (s->state == SERVICE_AUTO_RESTART) {
2511 service_set_state(s, SERVICE_DEAD);
2515 /* If there's already something running we go directly into
2517 if (s->state == SERVICE_START_PRE ||
2518 s->state == SERVICE_START ||
2519 s->state == SERVICE_START_POST ||
2520 s->state == SERVICE_RELOAD) {
2521 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2525 assert(s->state == SERVICE_RUNNING ||
2526 s->state == SERVICE_EXITED);
2528 service_enter_stop(s, SERVICE_SUCCESS);
2532 static int service_reload(Unit *u) {
2533 Service *s = SERVICE(u);
2537 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2539 service_enter_reload(s);
2543 _pure_ static bool service_can_reload(Unit *u) {
2544 Service *s = SERVICE(u);
2548 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2551 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2552 Service *s = SERVICE(u);
2558 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2559 unit_serialize_item(u, f, "result", service_result_to_string(s->result));
2560 unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
2562 if (s->control_pid > 0)
2563 unit_serialize_item_format(u, f, "control-pid", PID_FMT,
2566 if (s->main_pid_known && s->main_pid > 0)
2567 unit_serialize_item_format(u, f, "main-pid", PID_FMT, s->main_pid);
2569 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2572 unit_serialize_item(u, f, "status-text", s->status_text);
2574 /* FIXME: There's a minor uncleanliness here: if there are
2575 * multiple commands attached here, we will start from the
2576 * first one again */
2577 if (s->control_command_id >= 0)
2578 unit_serialize_item(u, f, "control-command",
2579 service_exec_command_to_string(s->control_command_id));
2581 if (s->socket_fd >= 0) {
2584 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2587 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2590 if (s->main_exec_status.pid > 0) {
2591 unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT,
2592 s->main_exec_status.pid);
2593 dual_timestamp_serialize(f, "main-exec-status-start",
2594 &s->main_exec_status.start_timestamp);
2595 dual_timestamp_serialize(f, "main-exec-status-exit",
2596 &s->main_exec_status.exit_timestamp);
2598 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2599 unit_serialize_item_format(u, f, "main-exec-status-code", "%i",
2600 s->main_exec_status.code);
2601 unit_serialize_item_format(u, f, "main-exec-status-status", "%i",
2602 s->main_exec_status.status);
2605 if (dual_timestamp_is_set(&s->watchdog_timestamp))
2606 dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
2608 if (s->forbid_restart)
2609 unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart));
2614 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2615 Service *s = SERVICE(u);
2622 if (streq(key, "state")) {
2625 state = service_state_from_string(value);
2627 log_debug_unit(u->id, "Failed to parse state value %s", value);
2629 s->deserialized_state = state;
2630 } else if (streq(key, "result")) {
2633 f = service_result_from_string(value);
2635 log_debug_unit(u->id, "Failed to parse result value %s", value);
2636 else if (f != SERVICE_SUCCESS)
2639 } else if (streq(key, "reload-result")) {
2642 f = service_result_from_string(value);
2644 log_debug_unit(u->id, "Failed to parse reload result value %s", value);
2645 else if (f != SERVICE_SUCCESS)
2646 s->reload_result = f;
2648 } else if (streq(key, "control-pid")) {
2651 if (parse_pid(value, &pid) < 0)
2652 log_debug_unit(u->id, "Failed to parse control-pid value %s", value);
2654 s->control_pid = pid;
2655 } else if (streq(key, "main-pid")) {
2658 if (parse_pid(value, &pid) < 0)
2659 log_debug_unit(u->id, "Failed to parse main-pid value %s", value);
2661 service_set_main_pid(s, pid);
2662 unit_watch_pid(UNIT(s), pid);
2664 } else if (streq(key, "main-pid-known")) {
2667 b = parse_boolean(value);
2669 log_debug_unit(u->id, "Failed to parse main-pid-known value %s", value);
2671 s->main_pid_known = b;
2672 } else if (streq(key, "status-text")) {
2679 free(s->status_text);
2683 } else if (streq(key, "control-command")) {
2684 ServiceExecCommand id;
2686 id = service_exec_command_from_string(value);
2688 log_debug_unit(u->id, "Failed to parse exec-command value %s", value);
2690 s->control_command_id = id;
2691 s->control_command = s->exec_command[id];
2693 } else if (streq(key, "socket-fd")) {
2696 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2697 log_debug_unit(u->id, "Failed to parse socket-fd value %s", value);
2700 if (s->socket_fd >= 0)
2701 close_nointr_nofail(s->socket_fd);
2702 s->socket_fd = fdset_remove(fds, fd);
2704 } else if (streq(key, "main-exec-status-pid")) {
2707 if (parse_pid(value, &pid) < 0)
2708 log_debug_unit(u->id, "Failed to parse main-exec-status-pid value %s", value);
2710 s->main_exec_status.pid = pid;
2711 } else if (streq(key, "main-exec-status-code")) {
2714 if (safe_atoi(value, &i) < 0)
2715 log_debug_unit(u->id, "Failed to parse main-exec-status-code value %s", value);
2717 s->main_exec_status.code = i;
2718 } else if (streq(key, "main-exec-status-status")) {
2721 if (safe_atoi(value, &i) < 0)
2722 log_debug_unit(u->id, "Failed to parse main-exec-status-status value %s", value);
2724 s->main_exec_status.status = i;
2725 } else if (streq(key, "main-exec-status-start"))
2726 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2727 else if (streq(key, "main-exec-status-exit"))
2728 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2729 else if (streq(key, "watchdog-timestamp"))
2730 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
2731 else if (streq(key, "forbid-restart")) {
2734 b = parse_boolean(value);
2736 log_debug_unit(u->id, "Failed to parse forbid-restart value %s", value);
2738 s->forbid_restart = b;
2740 log_debug_unit(u->id, "Unknown serialization key '%s'", key);
2745 _pure_ static UnitActiveState service_active_state(Unit *u) {
2746 const UnitActiveState *table;
2750 table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
2752 return table[SERVICE(u)->state];
2755 static const char *service_sub_state_to_string(Unit *u) {
2758 return service_state_to_string(SERVICE(u)->state);
2761 static bool service_check_gc(Unit *u) {
2762 Service *s = SERVICE(u);
2766 /* Never clean up services that still have a process around,
2767 * even if the service is formally dead. */
2768 if (cgroup_good(s) > 0 ||
2769 main_pid_good(s) > 0 ||
2770 control_pid_good(s) > 0)
2773 #ifdef HAVE_SYSV_COMPAT
2781 _pure_ static bool service_check_snapshot(Unit *u) {
2782 Service *s = SERVICE(u);
2786 return (s->socket_fd < 0);
2789 static int service_retry_pid_file(Service *s) {
2792 assert(s->pid_file);
2793 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2795 r = service_load_pid_file(s, false);
2799 service_unwatch_pid_file(s);
2801 service_enter_running(s, SERVICE_SUCCESS);
2805 static int service_watch_pid_file(Service *s) {
2808 log_debug_unit(UNIT(s)->id,
2809 "Setting watch for %s's PID file %s",
2810 UNIT(s)->id, s->pid_file_pathspec->path);
2811 r = path_spec_watch(s->pid_file_pathspec, service_dispatch_io);
2815 /* the pidfile might have appeared just before we set the watch */
2816 log_debug_unit(UNIT(s)->id,
2817 "Trying to read %s's PID file %s in case it changed",
2818 UNIT(s)->id, s->pid_file_pathspec->path);
2819 service_retry_pid_file(s);
2823 log_error_unit(UNIT(s)->id,
2824 "Failed to set a watch for %s's PID file %s: %s",
2825 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
2826 service_unwatch_pid_file(s);
2830 static int service_demand_pid_file(Service *s) {
2833 assert(s->pid_file);
2834 assert(!s->pid_file_pathspec);
2836 ps = new0(PathSpec, 1);
2841 ps->path = strdup(s->pid_file);
2847 path_kill_slashes(ps->path);
2849 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2850 * keep their PID file open all the time. */
2851 ps->type = PATH_MODIFIED;
2852 ps->inotify_fd = -1;
2854 s->pid_file_pathspec = ps;
2856 return service_watch_pid_file(s);
2859 static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata) {
2860 PathSpec *p = userdata;
2865 s = SERVICE(p->unit);
2869 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2870 assert(s->pid_file_pathspec);
2871 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2873 log_debug_unit(UNIT(s)->id, "inotify event for %s", UNIT(s)->id);
2875 if (path_spec_fd_event(p, events) < 0)
2878 if (service_retry_pid_file(s) == 0)
2881 if (service_watch_pid_file(s) < 0)
2887 service_unwatch_pid_file(s);
2888 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2892 static void service_notify_cgroup_empty_event(Unit *u) {
2893 Service *s = SERVICE(u);
2897 log_debug_unit(u->id, "%s: cgroup is empty", u->id);
2901 /* Waiting for SIGCHLD is usually more interesting,
2902 * because it includes return codes/signals. Which is
2903 * why we ignore the cgroup events for most cases,
2904 * except when we don't know pid which to expect the
2908 case SERVICE_START_POST:
2909 /* If we were hoping for the daemon to write its PID file,
2910 * we can give up now. */
2911 if (s->pid_file_pathspec) {
2912 log_warning_unit(u->id,
2913 "%s never wrote its PID file. Failing.", UNIT(s)->id);
2914 service_unwatch_pid_file(s);
2915 if (s->state == SERVICE_START)
2916 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2918 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2922 case SERVICE_RUNNING:
2923 /* service_enter_running() will figure out what to do */
2924 service_enter_running(s, SERVICE_SUCCESS);
2927 case SERVICE_STOP_SIGTERM:
2928 case SERVICE_STOP_SIGKILL:
2930 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2931 service_enter_stop_post(s, SERVICE_SUCCESS);
2935 case SERVICE_STOP_POST:
2936 case SERVICE_FINAL_SIGTERM:
2937 case SERVICE_FINAL_SIGKILL:
2938 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2939 service_enter_dead(s, SERVICE_SUCCESS, true);
2948 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2949 Service *s = SERVICE(u);
2955 if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) :
2956 is_clean_exit_lsb(code, status, &s->success_status))
2957 f = SERVICE_SUCCESS;
2958 else if (code == CLD_EXITED)
2959 f = SERVICE_FAILURE_EXIT_CODE;
2960 else if (code == CLD_KILLED)
2961 f = SERVICE_FAILURE_SIGNAL;
2962 else if (code == CLD_DUMPED)
2963 f = SERVICE_FAILURE_CORE_DUMP;
2965 assert_not_reached("Unknown code");
2967 if (s->main_pid == pid) {
2968 /* Forking services may occasionally move to a new PID.
2969 * As long as they update the PID file before exiting the old
2970 * PID, they're fine. */
2971 if (service_load_pid_file(s, false) == 0)
2975 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2977 if (s->main_command) {
2978 /* If this is not a forking service than the
2979 * main process got started and hence we copy
2980 * the exit status so that it is recorded both
2981 * as main and as control process exit
2984 s->main_command->exec_status = s->main_exec_status;
2986 if (s->main_command->ignore)
2987 f = SERVICE_SUCCESS;
2988 } else if (s->exec_command[SERVICE_EXEC_START]) {
2990 /* If this is a forked process, then we should
2991 * ignore the return value if this was
2992 * configured for the starter process */
2994 if (s->exec_command[SERVICE_EXEC_START]->ignore)
2995 f = SERVICE_SUCCESS;
2998 log_struct_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
3000 "MESSAGE=%s: main process exited, code=%s, status=%i/%s",
3001 u->id, sigchld_code_to_string(code), status,
3002 strna(code == CLD_EXITED
3003 ? exit_status_to_string(status, EXIT_STATUS_FULL)
3004 : signal_to_string(status)),
3005 "EXIT_CODE=%s", sigchld_code_to_string(code),
3006 "EXIT_STATUS=%i", status,
3009 if (f != SERVICE_SUCCESS)
3012 if (s->main_command &&
3013 s->main_command->command_next &&
3014 f == SERVICE_SUCCESS) {
3016 /* There is another command to *
3017 * execute, so let's do that. */
3019 log_debug_unit(u->id,
3020 "%s running next main command for state %s",
3021 u->id, service_state_to_string(s->state));
3022 service_run_next_main(s);
3026 /* The service exited, so the service is officially
3028 s->main_command = NULL;
3032 case SERVICE_START_POST:
3033 case SERVICE_RELOAD:
3035 /* Need to wait until the operation is
3040 if (s->type == SERVICE_ONESHOT) {
3041 /* This was our main goal, so let's go on */
3042 if (f == SERVICE_SUCCESS)
3043 service_enter_start_post(s);
3045 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3051 case SERVICE_RUNNING:
3052 service_enter_running(s, f);
3055 case SERVICE_STOP_SIGTERM:
3056 case SERVICE_STOP_SIGKILL:
3058 if (!control_pid_good(s))
3059 service_enter_stop_post(s, f);
3061 /* If there is still a control process, wait for that first */
3064 case SERVICE_STOP_POST:
3065 case SERVICE_FINAL_SIGTERM:
3066 case SERVICE_FINAL_SIGKILL:
3068 if (!control_pid_good(s))
3069 service_enter_dead(s, f, true);
3073 assert_not_reached("Uh, main process died at wrong time.");
3077 } else if (s->control_pid == pid) {
3080 if (s->control_command) {
3081 exec_status_exit(&s->control_command->exec_status,
3082 &s->exec_context, pid, code, status);
3084 if (s->control_command->ignore)
3085 f = SERVICE_SUCCESS;
3088 log_full_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, u->id,
3089 "%s: control process exited, code=%s status=%i",
3090 u->id, sigchld_code_to_string(code), status);
3092 if (f != SERVICE_SUCCESS)
3095 /* Immediately get rid of the cgroup, so that the
3096 * kernel doesn't delay the cgroup empty messages for
3097 * the service cgroup any longer than necessary */
3098 service_kill_control_processes(s);
3100 if (s->control_command &&
3101 s->control_command->command_next &&
3102 f == SERVICE_SUCCESS) {
3104 /* There is another command to *
3105 * execute, so let's do that. */
3107 log_debug_unit(u->id,
3108 "%s running next control command for state %s",
3109 u->id, service_state_to_string(s->state));
3110 service_run_next_control(s);
3113 /* No further commands for this step, so let's
3114 * figure out what to do next */
3116 s->control_command = NULL;
3117 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
3119 log_debug_unit(u->id,
3120 "%s got final SIGCHLD for state %s",
3121 u->id, service_state_to_string(s->state));
3125 case SERVICE_START_PRE:
3126 if (f == SERVICE_SUCCESS)
3127 service_enter_start(s);
3129 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3133 if (s->type != SERVICE_FORKING)
3134 /* Maybe spurious event due to a reload that changed the type? */
3137 if (f != SERVICE_SUCCESS) {
3138 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3143 bool has_start_post;
3146 /* Let's try to load the pid file here if we can.
3147 * The PID file might actually be created by a START_POST
3148 * script. In that case don't worry if the loading fails. */
3150 has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
3151 r = service_load_pid_file(s, !has_start_post);
3152 if (!has_start_post && r < 0) {
3153 r = service_demand_pid_file(s);
3154 if (r < 0 || !cgroup_good(s))
3155 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3159 service_search_main_pid(s);
3161 service_enter_start_post(s);
3164 case SERVICE_START_POST:
3165 if (f != SERVICE_SUCCESS) {
3166 service_enter_stop(s, f);
3173 r = service_load_pid_file(s, true);
3175 r = service_demand_pid_file(s);
3176 if (r < 0 || !cgroup_good(s))
3177 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3181 service_search_main_pid(s);
3183 service_enter_running(s, SERVICE_SUCCESS);
3186 case SERVICE_RELOAD:
3187 if (f == SERVICE_SUCCESS) {
3188 service_load_pid_file(s, true);
3189 service_search_main_pid(s);
3192 s->reload_result = f;
3193 service_enter_running(s, SERVICE_SUCCESS);
3197 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
3200 case SERVICE_STOP_SIGTERM:
3201 case SERVICE_STOP_SIGKILL:
3202 if (main_pid_good(s) <= 0)
3203 service_enter_stop_post(s, f);
3205 /* If there is still a service
3206 * process around, wait until
3207 * that one quit, too */
3210 case SERVICE_STOP_POST:
3211 case SERVICE_FINAL_SIGTERM:
3212 case SERVICE_FINAL_SIGKILL:
3213 if (main_pid_good(s) <= 0)
3214 service_enter_dead(s, f, true);
3218 assert_not_reached("Uh, control process died at wrong time.");
3223 /* Notify clients about changed exit status */
3224 unit_add_to_dbus_queue(u);
3226 /* We got one SIGCHLD for the service, let's watch all
3227 * processes that are now running of the service, and watch
3228 * that. Among the PIDs we then watch will be children
3229 * reassigned to us, which hopefully allows us to identify
3230 * when all children are gone */
3231 unit_tidy_watch_pids(u, s->main_pid, s->control_pid);
3232 unit_watch_all_pids(u);
3234 /* If the PID set is empty now, then let's finish this off */
3235 if (set_isempty(u->pids))
3236 service_notify_cgroup_empty_event(u);
3239 static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) {
3240 Service *s = SERVICE(userdata);
3243 assert(source == s->timer_event_source);
3247 case SERVICE_START_PRE:
3249 log_warning_unit(UNIT(s)->id,
3250 "%s %s operation timed out. Terminating.",
3252 s->state == SERVICE_START ? "start" : "start-pre");
3253 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3256 case SERVICE_START_POST:
3257 log_warning_unit(UNIT(s)->id,
3258 "%s start-post operation timed out. Stopping.", UNIT(s)->id);
3259 service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
3262 case SERVICE_RELOAD:
3263 log_warning_unit(UNIT(s)->id,
3264 "%s reload operation timed out. Stopping.", UNIT(s)->id);
3265 s->reload_result = SERVICE_FAILURE_TIMEOUT;
3266 service_enter_running(s, SERVICE_SUCCESS);
3270 log_warning_unit(UNIT(s)->id,
3271 "%s stopping timed out. Terminating.", UNIT(s)->id);
3272 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3275 case SERVICE_STOP_SIGTERM:
3276 if (s->kill_context.send_sigkill) {
3277 log_warning_unit(UNIT(s)->id,
3278 "%s stop-sigterm timed out. Killing.", UNIT(s)->id);
3279 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3281 log_warning_unit(UNIT(s)->id,
3282 "%s stop-sigterm timed out. Skipping SIGKILL.", UNIT(s)->id);
3283 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3288 case SERVICE_STOP_SIGKILL:
3289 /* Uh, we sent a SIGKILL and it is still not gone?
3290 * Must be something we cannot kill, so let's just be
3291 * weirded out and continue */
3293 log_warning_unit(UNIT(s)->id,
3294 "%s still around after SIGKILL. Ignoring.", UNIT(s)->id);
3295 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3298 case SERVICE_STOP_POST:
3299 log_warning_unit(UNIT(s)->id,
3300 "%s stop-post timed out. Terminating.", UNIT(s)->id);
3301 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3304 case SERVICE_FINAL_SIGTERM:
3305 if (s->kill_context.send_sigkill) {
3306 log_warning_unit(UNIT(s)->id,
3307 "%s stop-final-sigterm timed out. Killing.", UNIT(s)->id);
3308 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3310 log_warning_unit(UNIT(s)->id,
3311 "%s stop-final-sigterm timed out. Skipping SIGKILL. Entering failed mode.",
3313 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
3318 case SERVICE_FINAL_SIGKILL:
3319 log_warning_unit(UNIT(s)->id,
3320 "%s still around after final SIGKILL. Entering failed mode.", UNIT(s)->id);
3321 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
3324 case SERVICE_AUTO_RESTART:
3325 log_info_unit(UNIT(s)->id,
3326 "%s holdoff time over, scheduling restart.", UNIT(s)->id);
3327 service_enter_restart(s);
3331 assert_not_reached("Timeout at wrong time.");
3337 static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) {
3338 Service *s = SERVICE(userdata);
3341 assert(source == s->watchdog_event_source);
3343 log_error_unit(UNIT(s)->id, "%s watchdog timeout!", UNIT(s)->id);
3344 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_WATCHDOG);
3349 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3350 Service *s = SERVICE(u);
3352 bool notify_dbus = false;
3356 log_debug_unit(u->id, "%s: Got notification message from PID "PID_FMT" (%s...)",
3357 u->id, pid, tags && *tags ? tags[0] : "(empty)");
3359 if (s->notify_access == NOTIFY_NONE) {
3360 log_warning_unit(u->id,
3361 "%s: Got notification message from PID "PID_FMT", but reception is disabled.",
3366 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3368 if (s->main_pid != 0)
3369 log_warning_unit(u->id, "%s: Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, u->id, pid, s->main_pid);
3371 log_debug_unit(u->id, "%s: Got notification message from PID "PID_FMT", but reception only permitted for main PID which is currently not known", u->id, pid);
3375 /* Interpret MAINPID= */
3376 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3377 (s->state == SERVICE_START ||
3378 s->state == SERVICE_START_POST ||
3379 s->state == SERVICE_RUNNING ||
3380 s->state == SERVICE_RELOAD)) {
3382 if (parse_pid(e + 8, &pid) < 0)
3383 log_warning_unit(u->id, "Failed to parse notification message %s", e);
3385 log_debug_unit(u->id, "%s: got %s", u->id, e);
3386 service_set_main_pid(s, pid);
3387 unit_watch_pid(UNIT(s), pid);
3392 /* Interpret READY= */
3393 if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START && strv_find(tags, "READY=1")) {
3394 log_debug_unit(u->id, "%s: got READY=1", u->id);
3395 service_enter_start_post(s);
3399 /* Interpret STATUS= */
3400 e = strv_find_prefix(tags, "STATUS=");
3405 if (!utf8_is_valid(e+7)) {
3406 log_warning_unit(u->id, "Status message in notification is not UTF-8 clean.");
3410 log_debug_unit(u->id, "%s: got %s", u->id, e);
3421 if (!streq_ptr(s->status_text, t)) {
3422 free(s->status_text);
3429 /* Interpet WATCHDOG= */
3430 if (strv_find(tags, "WATCHDOG=1")) {
3431 log_debug_unit(u->id, "%s: got WATCHDOG=1", u->id);
3432 service_reset_watchdog(s);
3435 /* Notify clients about changed status or main pid */
3437 unit_add_to_dbus_queue(u);
3440 static int service_get_timeout(Unit *u, uint64_t *timeout) {
3441 Service *s = SERVICE(u);
3444 if (!s->timer_event_source)
3447 r = sd_event_source_get_time(s->timer_event_source, timeout);
3454 #ifdef HAVE_SYSV_COMPAT
3456 static int service_enumerate(Manager *m) {
3459 _cleanup_closedir_ DIR *d = NULL;
3460 _cleanup_free_ char *path = NULL, *fpath = NULL, *name = NULL;
3461 Set *runlevel_services[ELEMENTSOF(rcnd_table)] = {};
3462 _cleanup_set_free_ Set *shutdown_services = NULL;
3469 if (m->running_as != SYSTEMD_SYSTEM)
3472 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3473 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3477 path = strjoin(*p, "/", rcnd_table[i].path, NULL);
3488 if (errno != ENOENT)
3489 log_warning("opendir(%s) failed: %m", path);
3494 while ((de = readdir(d))) {
3497 if (ignore_file(de->d_name))
3500 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3503 if (strlen(de->d_name) < 4)
3506 a = undecchar(de->d_name[1]);
3507 b = undecchar(de->d_name[2]);
3513 fpath = strjoin(path, "/", de->d_name, NULL);
3519 if (access(fpath, X_OK) < 0) {
3521 if (errno != ENOENT)
3522 log_warning("access() failed on %s: %m", fpath);
3528 name = sysv_translate_name(de->d_name + 3);
3534 r = manager_load_unit_prepare(m, name, NULL, NULL, &service);
3536 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3540 if (de->d_name[0] == 'S') {
3542 if (rcnd_table[i].type == RUNLEVEL_UP) {
3543 SERVICE(service)->sysv_start_priority_from_rcnd =
3544 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3546 SERVICE(service)->sysv_enabled = true;
3549 r = set_ensure_allocated(&runlevel_services[i],
3550 trivial_hash_func, trivial_compare_func);
3554 r = set_put(runlevel_services[i], service);
3558 } else if (de->d_name[0] == 'K' &&
3559 (rcnd_table[i].type == RUNLEVEL_DOWN)) {
3561 r = set_ensure_allocated(&shutdown_services,
3562 trivial_hash_func, trivial_compare_func);
3566 r = set_put(shutdown_services, service);
3573 /* Now we loaded all stubs and are aware of the lowest
3574 start-up priority for all services, not let's actually load
3575 the services, this will also tell us which services are
3576 actually native now */
3577 manager_dispatch_load_queue(m);
3579 /* If this is a native service, rely on native ways to pull in
3580 * a service, don't pull it in via sysv rcN.d links. */
3581 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3582 SET_FOREACH(service, runlevel_services[i], j) {
3583 service = unit_follow_merge(service);
3585 if (service->fragment_path)
3588 r = unit_add_two_dependencies_by_name_inverse(
3589 service, UNIT_AFTER, UNIT_WANTS,
3590 rcnd_table[i].target, NULL, true);
3595 /* We honour K links only for halt/reboot. For the normal
3596 * runlevels we assume the stop jobs will be implicitly added
3597 * by the core logic. Also, we don't really distinguish here
3598 * between the runlevels 0 and 6 and just add them to the
3599 * special shutdown target. */
3600 SET_FOREACH(service, shutdown_services, j) {
3601 service = unit_follow_merge(service);
3603 if (service->fragment_path)
3606 r = unit_add_two_dependencies_by_name(
3607 service, UNIT_BEFORE, UNIT_CONFLICTS,
3608 SPECIAL_SHUTDOWN_TARGET, NULL, true);
3617 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3618 set_free(runlevel_services[i]);
3624 static void service_bus_name_owner_change(
3627 const char *old_owner,
3628 const char *new_owner) {
3630 Service *s = SERVICE(u);
3636 assert(streq(s->bus_name, name));
3637 assert(old_owner || new_owner);
3639 if (old_owner && new_owner)
3640 log_debug_unit(u->id,
3641 "%s's D-Bus name %s changed owner from %s to %s",
3642 u->id, name, old_owner, new_owner);
3644 log_debug_unit(u->id,
3645 "%s's D-Bus name %s no longer registered by %s",
3646 u->id, name, old_owner);
3648 log_debug_unit(u->id,
3649 "%s's D-Bus name %s now registered by %s",
3650 u->id, name, new_owner);
3652 s->bus_name_good = !!new_owner;
3654 if (s->type == SERVICE_DBUS) {
3656 /* service_enter_running() will figure out what to
3658 if (s->state == SERVICE_RUNNING)
3659 service_enter_running(s, SERVICE_SUCCESS);
3660 else if (s->state == SERVICE_START && new_owner)
3661 service_enter_start_post(s);
3663 } else if (new_owner &&
3665 (s->state == SERVICE_START ||
3666 s->state == SERVICE_START_POST ||
3667 s->state == SERVICE_RUNNING ||
3668 s->state == SERVICE_RELOAD)) {
3670 _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
3673 /* Try to acquire PID from bus service */
3675 r = sd_bus_get_owner(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds);
3677 r = sd_bus_creds_get_pid(creds, &pid);
3679 log_debug_unit(u->id, "%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
3681 service_set_main_pid(s, pid);
3682 unit_watch_pid(UNIT(s), pid);
3687 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3688 _cleanup_free_ char *peer = NULL;
3694 /* This is called by the socket code when instantiating a new
3695 * service for a stream socket and the socket needs to be
3698 if (UNIT(s)->load_state != UNIT_LOADED)
3701 if (s->socket_fd >= 0)
3704 if (s->state != SERVICE_DEAD)
3707 if (getpeername_pretty(fd, &peer) >= 0) {
3709 if (UNIT(s)->description) {
3710 _cleanup_free_ char *a;
3712 a = strjoin(UNIT(s)->description, " (", peer, ")", NULL);
3716 r = unit_set_description(UNIT(s), a);
3718 r = unit_set_description(UNIT(s), peer);
3726 unit_ref_set(&s->accept_socket, UNIT(sock));
3728 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3731 static void service_reset_failed(Unit *u) {
3732 Service *s = SERVICE(u);
3736 if (s->state == SERVICE_FAILED)
3737 service_set_state(s, SERVICE_DEAD);
3739 s->result = SERVICE_SUCCESS;
3740 s->reload_result = SERVICE_SUCCESS;
3742 RATELIMIT_RESET(s->start_limit);
3745 static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) {
3746 Service *s = SERVICE(u);
3748 return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error);
3751 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3752 [SERVICE_DEAD] = "dead",
3753 [SERVICE_START_PRE] = "start-pre",
3754 [SERVICE_START] = "start",
3755 [SERVICE_START_POST] = "start-post",
3756 [SERVICE_RUNNING] = "running",
3757 [SERVICE_EXITED] = "exited",
3758 [SERVICE_RELOAD] = "reload",
3759 [SERVICE_STOP] = "stop",
3760 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3761 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3762 [SERVICE_STOP_POST] = "stop-post",
3763 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3764 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3765 [SERVICE_FAILED] = "failed",
3766 [SERVICE_AUTO_RESTART] = "auto-restart",
3769 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3771 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3772 [SERVICE_RESTART_NO] = "no",
3773 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3774 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3775 [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog",
3776 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3777 [SERVICE_RESTART_ALWAYS] = "always"
3780 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3782 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3783 [SERVICE_SIMPLE] = "simple",
3784 [SERVICE_FORKING] = "forking",
3785 [SERVICE_ONESHOT] = "oneshot",
3786 [SERVICE_DBUS] = "dbus",
3787 [SERVICE_NOTIFY] = "notify",
3788 [SERVICE_IDLE] = "idle"
3791 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3793 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3794 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3795 [SERVICE_EXEC_START] = "ExecStart",
3796 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3797 [SERVICE_EXEC_RELOAD] = "ExecReload",
3798 [SERVICE_EXEC_STOP] = "ExecStop",
3799 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3802 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3804 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3805 [NOTIFY_NONE] = "none",
3806 [NOTIFY_MAIN] = "main",
3807 [NOTIFY_ALL] = "all"
3810 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3812 static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
3813 [SERVICE_SUCCESS] = "success",
3814 [SERVICE_FAILURE_RESOURCES] = "resources",
3815 [SERVICE_FAILURE_TIMEOUT] = "timeout",
3816 [SERVICE_FAILURE_EXIT_CODE] = "exit-code",
3817 [SERVICE_FAILURE_SIGNAL] = "signal",
3818 [SERVICE_FAILURE_CORE_DUMP] = "core-dump",
3819 [SERVICE_FAILURE_WATCHDOG] = "watchdog",
3820 [SERVICE_FAILURE_START_LIMIT] = "start-limit"
3823 DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
3825 static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = {
3826 [SERVICE_START_LIMIT_NONE] = "none",
3827 [SERVICE_START_LIMIT_REBOOT] = "reboot",
3828 [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force",
3829 [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate"
3831 DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction);
3833 const UnitVTable service_vtable = {
3834 .object_size = sizeof(Service),
3835 .exec_context_offset = offsetof(Service, exec_context),
3836 .cgroup_context_offset = offsetof(Service, cgroup_context),
3837 .kill_context_offset = offsetof(Service, kill_context),
3838 .exec_runtime_offset = offsetof(Service, exec_runtime),
3844 .private_section = "Service",
3846 .init = service_init,
3847 .done = service_done,
3848 .load = service_load,
3850 .coldplug = service_coldplug,
3852 .dump = service_dump,
3854 .start = service_start,
3855 .stop = service_stop,
3856 .reload = service_reload,
3858 .can_reload = service_can_reload,
3860 .kill = service_kill,
3862 .serialize = service_serialize,
3863 .deserialize_item = service_deserialize_item,
3865 .active_state = service_active_state,
3866 .sub_state_to_string = service_sub_state_to_string,
3868 .check_gc = service_check_gc,
3869 .check_snapshot = service_check_snapshot,
3871 .sigchld_event = service_sigchld_event,
3873 .reset_failed = service_reset_failed,
3875 .notify_cgroup_empty = service_notify_cgroup_empty_event,
3876 .notify_message = service_notify_message,
3878 .bus_name_owner_change = service_bus_name_owner_change,
3880 .bus_interface = "org.freedesktop.systemd1.Service",
3881 .bus_vtable = bus_service_vtable,
3882 .bus_set_property = bus_service_set_property,
3883 .bus_commit_properties = bus_service_commit_properties,
3885 .get_timeout = service_get_timeout,
3887 #ifdef HAVE_SYSV_COMPAT
3888 .enumerate = service_enumerate,
3891 .can_transient = true,
3893 .status_message_formats = {
3894 .starting_stopping = {
3895 [0] = "Starting %s...",
3896 [1] = "Stopping %s...",
3898 .finished_start_job = {
3899 [JOB_DONE] = "Started %s.",
3900 [JOB_FAILED] = "Failed to start %s.",
3901 [JOB_DEPENDENCY] = "Dependency failed for %s.",
3902 [JOB_TIMEOUT] = "Timed out starting %s.",
3904 .finished_stop_job = {
3905 [JOB_DONE] = "Stopped %s.",
3906 [JOB_FAILED] = "Stopped (with error) %s.",
3907 [JOB_TIMEOUT] = "Timed out stopping %s.",