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 RATELIMIT_INIT(s->start_limit, u->manager->default_start_limit_interval, u->manager->default_start_limit_burst);
148 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
151 static void service_unwatch_control_pid(Service *s) {
154 if (s->control_pid <= 0)
157 unit_unwatch_pid(UNIT(s), s->control_pid);
161 static void service_unwatch_main_pid(Service *s) {
164 if (s->main_pid <= 0)
167 unit_unwatch_pid(UNIT(s), s->main_pid);
171 static void service_unwatch_pid_file(Service *s) {
172 if (!s->pid_file_pathspec)
175 log_debug_unit(UNIT(s)->id, "Stopping watch for %s's PID file %s",
176 UNIT(s)->id, s->pid_file_pathspec->path);
177 path_spec_unwatch(s->pid_file_pathspec);
178 path_spec_done(s->pid_file_pathspec);
179 free(s->pid_file_pathspec);
180 s->pid_file_pathspec = NULL;
183 static int service_set_main_pid(Service *s, pid_t pid) {
194 if (s->main_pid == pid && s->main_pid_known)
197 if (s->main_pid != pid) {
198 service_unwatch_main_pid(s);
199 exec_status_start(&s->main_exec_status, pid);
203 s->main_pid_known = true;
205 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) {
206 log_warning_unit(UNIT(s)->id,
207 "%s: Supervising process "PID_FMT" which is not our child. We'll most likely not notice when it exits.",
210 s->main_pid_alien = true;
212 s->main_pid_alien = false;
217 static void service_close_socket_fd(Service *s) {
220 if (s->socket_fd < 0)
223 s->socket_fd = safe_close(s->socket_fd);
226 static void service_connection_unref(Service *s) {
229 if (!UNIT_ISSET(s->accept_socket))
232 socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
233 unit_ref_unset(&s->accept_socket);
236 static void service_stop_watchdog(Service *s) {
239 s->watchdog_event_source = sd_event_source_unref(s->watchdog_event_source);
240 s->watchdog_timestamp = DUAL_TIMESTAMP_NULL;
243 static void service_start_watchdog(Service *s) {
248 if (s->watchdog_usec <= 0)
251 if (s->watchdog_event_source) {
252 r = sd_event_source_set_time(s->watchdog_event_source, s->watchdog_timestamp.monotonic + s->watchdog_usec);
254 log_warning_unit(UNIT(s)->id, "%s failed to reset watchdog timer: %s", UNIT(s)->id, strerror(-r));
258 r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT);
260 r = sd_event_add_time(
261 UNIT(s)->manager->event,
262 &s->watchdog_event_source,
264 s->watchdog_timestamp.monotonic + s->watchdog_usec, 0,
265 service_dispatch_watchdog, s);
267 log_warning_unit(UNIT(s)->id, "%s failed to add watchdog timer: %s", UNIT(s)->id, strerror(-r));
271 /* Let's process everything else which might be a sign
272 * of living before we consider a service died. */
273 r = sd_event_source_set_priority(s->watchdog_event_source, SD_EVENT_PRIORITY_IDLE);
277 log_warning_unit(UNIT(s)->id, "%s failed to install watchdog timer: %s", UNIT(s)->id, strerror(-r));
280 static void service_reset_watchdog(Service *s) {
283 dual_timestamp_get(&s->watchdog_timestamp);
284 service_start_watchdog(s);
287 static void service_done(Unit *u) {
288 Service *s = SERVICE(u);
295 #ifdef HAVE_SYSV_COMPAT
296 free(s->sysv_runlevels);
297 s->sysv_runlevels = NULL;
300 free(s->status_text);
301 s->status_text = NULL;
303 s->exec_runtime = exec_runtime_unref(s->exec_runtime);
304 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
305 s->control_command = NULL;
306 s->main_command = NULL;
308 set_free(s->restart_ignore_status.code);
309 s->restart_ignore_status.code = NULL;
310 set_free(s->restart_ignore_status.signal);
311 s->restart_ignore_status.signal = NULL;
313 set_free(s->success_status.code);
314 s->success_status.code = NULL;
315 set_free(s->success_status.signal);
316 s->success_status.signal = NULL;
318 /* This will leak a process, but at least no memory or any of
320 service_unwatch_main_pid(s);
321 service_unwatch_control_pid(s);
322 service_unwatch_pid_file(s);
325 unit_unwatch_bus_name(u, s->bus_name);
330 service_close_socket_fd(s);
331 service_connection_unref(s);
333 unit_ref_unset(&s->accept_socket);
335 service_stop_watchdog(s);
337 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
340 static int service_arm_timer(Service *s, usec_t usec) {
345 if (s->timer_event_source) {
346 r = sd_event_source_set_time(s->timer_event_source, now(CLOCK_MONOTONIC) + usec);
350 return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT);
353 return sd_event_add_time(
354 UNIT(s)->manager->event,
355 &s->timer_event_source,
357 now(CLOCK_MONOTONIC) + usec, 0,
358 service_dispatch_timer, s);
361 #ifdef HAVE_SYSV_COMPAT
362 static char *sysv_translate_name(const char *name) {
365 r = new(char, strlen(name) + strlen(".service") + 1);
369 if (endswith(name, ".sh"))
370 /* Drop .sh suffix */
371 strcpy(stpcpy(r, name) - 3, ".service");
373 /* Normal init script name */
374 strcpy(stpcpy(r, name), ".service");
379 static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
381 /* We silently ignore the $ prefix here. According to the LSB
382 * spec it simply indicates whether something is a
383 * standardized name or a distribution-specific one. Since we
384 * just follow what already exists and do not introduce new
385 * uses or names we don't care who introduced a new name. */
387 static const char * const table[] = {
388 /* LSB defined facilities */
390 "network", SPECIAL_NETWORK_TARGET,
391 "named", SPECIAL_NSS_LOOKUP_TARGET,
392 "portmap", SPECIAL_RPCBIND_TARGET,
393 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
395 "time", SPECIAL_TIME_SYNC_TARGET,
405 n = *name == '$' ? name + 1 : name;
407 for (i = 0; i < ELEMENTSOF(table); i += 2) {
409 if (!streq(table[i], n))
415 r = strdup(table[i+1]);
422 /* If we don't know this name, fallback heuristics to figure
423 * out whether something is a target or a service alias. */
426 if (!unit_prefix_is_valid(n))
429 /* Facilities starting with $ are most likely targets */
430 r = unit_name_build(n, NULL, ".target");
431 } else if (filename && streq(name, filename))
432 /* Names equaling the file name of the services are redundant */
435 /* Everything else we assume to be normal service names */
436 r = sysv_translate_name(n);
447 static int sysv_fix_order(Service *s) {
453 if (s->sysv_start_priority < 0)
456 /* For each pair of services where at least one lacks a LSB
457 * header, we use the start priority value to order things. */
459 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
462 bool special_s, special_t;
469 if (UNIT(t)->load_state != UNIT_LOADED)
472 if (t->sysv_start_priority < 0)
475 /* If both units have modern headers we don't care
476 * about the priorities */
477 if ((UNIT(s)->fragment_path || s->sysv_has_lsb) &&
478 (UNIT(t)->fragment_path || t->sysv_has_lsb))
481 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
482 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
484 if (special_t && !special_s)
486 else if (special_s && !special_t)
488 else if (t->sysv_start_priority < s->sysv_start_priority)
490 else if (t->sysv_start_priority > s->sysv_start_priority)
495 /* FIXME: Maybe we should compare the name here lexicographically? */
497 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
504 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
507 if (!(c = new0(ExecCommand, 1)))
510 if (!(c->path = strdup(path))) {
515 if (!(c->argv = strv_new(path, arg1, NULL))) {
524 static int sysv_exec_commands(Service *s, const bool supports_reload) {
529 assert(UNIT(s)->source_path);
531 c = exec_command_new(UNIT(s)->source_path, "start");
534 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
536 c = exec_command_new(UNIT(s)->source_path, "stop");
539 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
541 if (supports_reload) {
542 c = exec_command_new(UNIT(s)->source_path, "reload");
545 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
551 static bool usage_contains_reload(const char *line) {
552 return (strcasestr(line, "{reload|") ||
553 strcasestr(line, "{reload}") ||
554 strcasestr(line, "{reload\"") ||
555 strcasestr(line, "|reload|") ||
556 strcasestr(line, "|reload}") ||
557 strcasestr(line, "|reload\""));
560 static int service_load_sysv_path(Service *s, const char *path) {
572 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
574 bool supports_reload = false;
581 f = fopen(path, "re");
583 r = errno == ENOENT ? 0 : -errno;
587 if (fstat(fileno(f), &st) < 0) {
592 free(u->source_path);
593 u->source_path = strdup(path);
594 if (!u->source_path) {
598 u->source_mtime = timespec_load(&st.st_mtim);
600 if (null_or_empty(&st)) {
601 u->load_state = UNIT_MASKED;
609 char l[LINE_MAX], *t;
611 if (!fgets(l, sizeof(l), f)) {
616 log_error_unit(u->id,
617 "Failed to read configuration file '%s': %s",
626 /* Try to figure out whether this init script supports
627 * the reload operation. This heuristic looks for
628 * "Usage" lines which include the reload option. */
629 if ( state == USAGE_CONTINUATION ||
630 (state == NORMAL && strcasestr(t, "usage"))) {
631 if (usage_contains_reload(t)) {
632 supports_reload = true;
634 } else if (t[strlen(t)-1] == '\\')
635 state = USAGE_CONTINUATION;
643 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
645 s->sysv_has_lsb = true;
649 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
655 t += strspn(t, WHITESPACE);
657 if (state == NORMAL) {
659 /* Try to parse Red Hat style chkconfig headers */
661 if (startswith_no_case(t, "chkconfig:")) {
663 char runlevels[16], *k;
667 if (sscanf(t+10, "%15s %i %*i",
669 &start_priority) != 2) {
671 log_warning_unit(u->id,
672 "[%s:%u] Failed to parse chkconfig line. Ignoring.",
677 /* A start priority gathered from the
678 * symlink farms is preferred over the
679 * data from the LSB header. */
680 if (start_priority < 0 || start_priority > 99)
681 log_warning_unit(u->id,
682 "[%s:%u] Start priority out of range. Ignoring.",
685 s->sysv_start_priority = start_priority;
687 char_array_0(runlevels);
688 k = delete_chars(runlevels, WHITESPACE "-");
693 if (!(d = strdup(k))) {
698 free(s->sysv_runlevels);
699 s->sysv_runlevels = d;
702 } else if (startswith_no_case(t, "description:")) {
704 size_t k = strlen(t);
708 if (t[k-1] == '\\') {
713 if ((j = strstrip(t+12)) && *j) {
714 if (!(d = strdup(j))) {
721 free(chkconfig_description);
722 chkconfig_description = d;
724 } else if (startswith_no_case(t, "pidfile:")) {
731 if (!path_is_absolute(fn)) {
732 log_warning_unit(u->id,
733 "[%s:%u] PID file not absolute. Ignoring.",
738 if (!(fn = strdup(fn))) {
747 } else if (state == DESCRIPTION) {
749 /* Try to parse Red Hat style description
752 size_t k = strlen(t);
760 if ((j = strstrip(t)) && *j) {
763 if (chkconfig_description)
764 d = strjoin(chkconfig_description, " ", j, NULL);
773 free(chkconfig_description);
774 chkconfig_description = d;
777 } else if (state == LSB || state == LSB_DESCRIPTION) {
779 if (startswith_no_case(t, "Provides:")) {
785 FOREACH_WORD_QUOTED(w, z, t+9, i) {
788 if (!(n = strndup(w, z))) {
793 r = sysv_translate_facility(n, basename(path), &m);
802 if (unit_name_to_type(m) == UNIT_SERVICE)
803 r = unit_merge_by_name(u, m);
810 * indication that the
812 * now available. This
815 * targets do NOT pull
818 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true);
821 log_error_unit(u->id,
822 "[%s:%u] Failed to add LSB Provides name %s, ignoring: %s",
823 path, line, m, strerror(-r));
828 } else if (startswith_no_case(t, "Required-Start:") ||
829 startswith_no_case(t, "Should-Start:") ||
830 startswith_no_case(t, "X-Start-Before:") ||
831 startswith_no_case(t, "X-Start-After:")) {
837 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
840 if (!(n = strndup(w, z))) {
845 r = sysv_translate_facility(n, basename(path), &m);
847 log_error_unit(u->id,
848 "[%s:%u] Failed to translate LSB dependency %s, ignoring: %s",
849 path, line, n, strerror(-r));
859 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
862 log_error_unit(u->id, "[%s:%u] Failed to add dependency on %s, ignoring: %s",
863 path, line, m, strerror(-r));
867 } else if (startswith_no_case(t, "Default-Start:")) {
872 k = delete_chars(t+14, WHITESPACE "-");
875 if (!(d = strdup(k))) {
880 free(s->sysv_runlevels);
881 s->sysv_runlevels = d;
884 } else if (startswith_no_case(t, "Description:")) {
887 state = LSB_DESCRIPTION;
889 if ((j = strstrip(t+12)) && *j) {
890 if (!(d = strdup(j))) {
897 free(long_description);
898 long_description = d;
900 } else if (startswith_no_case(t, "Short-Description:")) {
905 if ((j = strstrip(t+18)) && *j) {
906 if (!(d = strdup(j))) {
913 free(short_description);
914 short_description = d;
916 } else if (state == LSB_DESCRIPTION) {
918 if (startswith(l, "#\t") || startswith(l, "# ")) {
921 if ((j = strstrip(t)) && *j) {
924 if (long_description)
925 d = strjoin(long_description, " ", t, NULL);
934 free(long_description);
935 long_description = d;
944 if ((r = sysv_exec_commands(s, supports_reload)) < 0)
947 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
948 /* If there a runlevels configured for this service
949 * but none of the standard ones, then we assume this
950 * is some special kind of service (which might be
951 * needed for early boot) and don't create any links
954 UNIT(s)->default_dependencies = false;
956 /* Don't timeout special services during boot (like fsck) */
957 s->timeout_start_usec = 0;
958 s->timeout_stop_usec = 0;
960 s->timeout_start_usec = DEFAULT_SYSV_TIMEOUT_USEC;
961 s->timeout_stop_usec = DEFAULT_SYSV_TIMEOUT_USEC;
964 /* Special setting for all SysV services */
965 s->type = SERVICE_FORKING;
966 s->remain_after_exit = !s->pid_file;
967 s->guess_main_pid = false;
968 s->restart = SERVICE_RESTART_NO;
969 s->exec_context.ignore_sigpipe = false;
970 s->kill_context.kill_mode = KILL_PROCESS;
972 /* We use the long description only if
973 * no short description is set. */
975 if (short_description)
976 description = short_description;
977 else if (chkconfig_description)
978 description = chkconfig_description;
979 else if (long_description)
980 description = long_description;
987 if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
995 /* The priority that has been set in /etc/rcN.d/ hierarchies
996 * takes precedence over what is stored as default in the LSB
998 if (s->sysv_start_priority_from_rcnd >= 0)
999 s->sysv_start_priority = s->sysv_start_priority_from_rcnd;
1001 u->load_state = UNIT_LOADED;
1009 free(short_description);
1010 free(long_description);
1011 free(chkconfig_description);
1016 static int service_load_sysv_name(Service *s, const char *name) {
1022 /* For SysV services we strip the *.sh suffixes. */
1023 if (endswith(name, ".sh.service"))
1026 STRV_FOREACH(p, UNIT(s)->manager->lookup_paths.sysvinit_path) {
1030 path = strjoin(*p, "/", name, NULL);
1034 assert(endswith(path, ".service"));
1035 path[strlen(path)-8] = 0;
1037 r = service_load_sysv_path(s, path);
1039 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
1040 /* Try *.sh source'able init scripts */
1041 strcat(path, ".sh");
1042 r = service_load_sysv_path(s, path);
1049 if (UNIT(s)->load_state != UNIT_STUB)
1056 static int service_load_sysv(Service *s) {
1063 /* Load service data from SysV init scripts, preferably with
1064 * LSB headers ... */
1066 if (strv_isempty(UNIT(s)->manager->lookup_paths.sysvinit_path))
1069 if ((t = UNIT(s)->id))
1070 if ((r = service_load_sysv_name(s, t)) < 0)
1073 if (UNIT(s)->load_state == UNIT_STUB)
1074 SET_FOREACH(t, UNIT(s)->names, i) {
1075 if (t == UNIT(s)->id)
1078 if ((r = service_load_sysv_name(s, t)) < 0)
1081 if (UNIT(s)->load_state != UNIT_STUB)
1089 static int service_verify(Service *s) {
1092 if (UNIT(s)->load_state != UNIT_LOADED)
1095 if (!s->exec_command[SERVICE_EXEC_START]) {
1096 log_error_unit(UNIT(s)->id, "%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, "%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1106 if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) {
1107 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);
1111 if (s->type == SERVICE_DBUS && !s->bus_name) {
1112 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);
1116 if (s->bus_name && s->type != SERVICE_DBUS)
1117 log_warning_unit(UNIT(s)->id, "%s has a D-Bus service name specified, but is not of type dbus. Ignoring.", UNIT(s)->id);
1119 if (s->exec_context.pam_name && !(s->kill_context.kill_mode == KILL_CONTROL_GROUP || s->kill_context.kill_mode == KILL_MIXED)) {
1120 log_error_unit(UNIT(s)->id, "%s has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing.", UNIT(s)->id);
1127 static int service_add_default_dependencies(Service *s) {
1132 /* Add a number of automatic dependencies useful for the
1133 * majority of services. */
1135 /* First, pull in base system */
1136 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
1137 SPECIAL_BASIC_TARGET, NULL, true);
1141 /* Second, activate normal shutdown */
1142 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS,
1143 SPECIAL_SHUTDOWN_TARGET, NULL, true);
1147 static void service_fix_output(Service *s) {
1150 /* If nothing has been explicitly configured, patch default
1151 * output in. If input is socket/tty we avoid this however,
1152 * since in that case we want output to default to the same
1153 * place as we read input from. */
1155 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1156 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1157 s->exec_context.std_input == EXEC_INPUT_NULL)
1158 s->exec_context.std_error = UNIT(s)->manager->default_std_error;
1160 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1161 s->exec_context.std_input == EXEC_INPUT_NULL)
1162 s->exec_context.std_output = UNIT(s)->manager->default_std_output;
1165 static int service_load(Unit *u) {
1167 Service *s = SERVICE(u);
1171 /* Load a .service file */
1172 r = unit_load_fragment(u);
1176 #ifdef HAVE_SYSV_COMPAT
1177 /* Load a classic init script as a fallback, if we couldn't find anything */
1178 if (u->load_state == UNIT_STUB) {
1179 r = service_load_sysv(s);
1185 /* Still nothing found? Then let's give up */
1186 if (u->load_state == UNIT_STUB)
1189 /* This is a new unit? Then let's add in some extras */
1190 if (u->load_state == UNIT_LOADED) {
1192 /* We were able to load something, then let's add in
1193 * the dropin directories. */
1194 r = unit_load_dropin(u);
1198 if (s->type == _SERVICE_TYPE_INVALID)
1199 s->type = s->bus_name ? SERVICE_DBUS : SERVICE_SIMPLE;
1201 /* Oneshot services have disabled start timeout by default */
1202 if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined)
1203 s->timeout_start_usec = 0;
1205 service_fix_output(s);
1207 r = unit_patch_contexts(u);
1211 r = unit_add_exec_dependencies(u, &s->exec_context);
1215 r = unit_add_default_slice(u, &s->cgroup_context);
1219 #ifdef HAVE_SYSV_COMPAT
1220 r = sysv_fix_order(s);
1225 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1226 s->notify_access = NOTIFY_MAIN;
1228 if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE)
1229 s->notify_access = NOTIFY_MAIN;
1232 r = unit_watch_bus_name(u, s->bus_name);
1237 if (u->default_dependencies) {
1238 r = service_add_default_dependencies(s);
1244 return service_verify(s);
1247 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1249 ServiceExecCommand c;
1250 Service *s = SERVICE(u);
1251 const char *prefix2;
1252 _cleanup_free_ char *p2 = NULL;
1256 p2 = strappend(prefix, "\t");
1257 prefix2 = p2 ? p2 : prefix;
1260 "%sService State: %s\n"
1262 "%sReload Result: %s\n"
1263 "%sPermissionsStartOnly: %s\n"
1264 "%sRootDirectoryStartOnly: %s\n"
1265 "%sRemainAfterExit: %s\n"
1266 "%sGuessMainPID: %s\n"
1269 "%sNotifyAccess: %s\n",
1270 prefix, service_state_to_string(s->state),
1271 prefix, service_result_to_string(s->result),
1272 prefix, service_result_to_string(s->reload_result),
1273 prefix, yes_no(s->permissions_start_only),
1274 prefix, yes_no(s->root_directory_start_only),
1275 prefix, yes_no(s->remain_after_exit),
1276 prefix, yes_no(s->guess_main_pid),
1277 prefix, service_type_to_string(s->type),
1278 prefix, service_restart_to_string(s->restart),
1279 prefix, notify_access_to_string(s->notify_access));
1281 if (s->control_pid > 0)
1283 "%sControl PID: "PID_FMT"\n",
1284 prefix, s->control_pid);
1286 if (s->main_pid > 0)
1288 "%sMain PID: "PID_FMT"\n"
1289 "%sMain PID Known: %s\n"
1290 "%sMain PID Alien: %s\n",
1291 prefix, s->main_pid,
1292 prefix, yes_no(s->main_pid_known),
1293 prefix, yes_no(s->main_pid_alien));
1298 prefix, s->pid_file);
1303 "%sBus Name Good: %s\n",
1304 prefix, s->bus_name,
1305 prefix, yes_no(s->bus_name_good));
1307 kill_context_dump(&s->kill_context, f, prefix);
1308 exec_context_dump(&s->exec_context, f, prefix);
1310 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1312 if (!s->exec_command[c])
1315 fprintf(f, "%s-> %s:\n",
1316 prefix, service_exec_command_to_string(c));
1318 exec_command_dump_list(s->exec_command[c], f, prefix2);
1321 #ifdef HAVE_SYSV_COMPAT
1324 "%sSysV Init Script has LSB Header: %s\n"
1325 "%sSysVEnabled: %s\n",
1326 prefix, yes_no(s->sysv_has_lsb),
1327 prefix, yes_no(s->sysv_enabled));
1329 if (s->sysv_start_priority >= 0)
1331 "%sSysVStartPriority: %i\n",
1332 prefix, s->sysv_start_priority);
1334 if (s->sysv_runlevels)
1335 fprintf(f, "%sSysVRunLevels: %s\n",
1336 prefix, s->sysv_runlevels);
1340 fprintf(f, "%sStatus Text: %s\n",
1341 prefix, s->status_text);
1344 static int service_load_pid_file(Service *s, bool may_warn) {
1345 _cleanup_free_ char *k = NULL;
1354 r = read_one_line_file(s->pid_file, &k);
1357 log_info_unit(UNIT(s)->id,
1358 "PID file %s not readable (yet?) after %s.",
1359 s->pid_file, service_state_to_string(s->state));
1363 r = parse_pid(k, &pid);
1366 log_info_unit(UNIT(s)->id,
1367 "Failed to read PID from file %s: %s",
1368 s->pid_file, strerror(-r));
1372 if (!pid_is_alive(pid)) {
1374 log_info_unit(UNIT(s)->id, "PID "PID_FMT" read from file %s does not exist or is a zombie.", pid, s->pid_file);
1379 if (s->main_pid_known) {
1380 if (pid == s->main_pid)
1383 log_debug_unit(UNIT(s)->id,
1384 "Main PID changing: "PID_FMT" -> "PID_FMT,
1386 service_unwatch_main_pid(s);
1387 s->main_pid_known = false;
1389 log_debug_unit(UNIT(s)->id,
1390 "Main PID loaded: "PID_FMT, pid);
1392 r = service_set_main_pid(s, pid);
1396 r = unit_watch_pid(UNIT(s), pid);
1398 /* FIXME: we need to do something here */
1399 log_warning_unit(UNIT(s)->id,
1400 "Failed to watch PID "PID_FMT" from service %s",
1408 static int service_search_main_pid(Service *s) {
1414 /* If we know it anyway, don't ever fallback to unreliable
1416 if (s->main_pid_known)
1419 if (!s->guess_main_pid)
1422 assert(s->main_pid <= 0);
1424 pid = unit_search_main_pid(UNIT(s));
1428 log_debug_unit(UNIT(s)->id,
1429 "Main PID guessed: "PID_FMT, pid);
1430 r = service_set_main_pid(s, pid);
1434 r = unit_watch_pid(UNIT(s), pid);
1436 /* FIXME: we need to do something here */
1437 log_warning_unit(UNIT(s)->id,
1438 "Failed to watch PID "PID_FMT" from service %s",
1443 static void service_set_state(Service *s, ServiceState state) {
1444 ServiceState old_state;
1445 const UnitActiveState *table;
1449 table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
1451 old_state = s->state;
1454 service_unwatch_pid_file(s);
1457 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1459 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1461 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL,
1462 SERVICE_AUTO_RESTART))
1463 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1466 SERVICE_START, SERVICE_START_POST,
1467 SERVICE_RUNNING, SERVICE_RELOAD,
1468 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1470 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1471 service_unwatch_main_pid(s);
1472 s->main_command = NULL;
1476 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1478 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1480 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1481 service_unwatch_control_pid(s);
1482 s->control_command = NULL;
1483 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1486 if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART))
1487 unit_unwatch_all_pids(UNIT(s));
1490 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1491 SERVICE_RUNNING, SERVICE_RELOAD,
1492 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
1493 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) &&
1494 !(state == SERVICE_DEAD && UNIT(s)->job)) {
1495 service_close_socket_fd(s);
1496 service_connection_unref(s);
1499 if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
1500 service_stop_watchdog(s);
1502 /* For the inactive states unit_notify() will trim the cgroup,
1503 * but for exit we have to do that ourselves... */
1504 if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
1505 unit_destroy_cgroup(UNIT(s));
1507 /* For remain_after_exit services, let's see if we can "release" the
1508 * hold on the console, since unit_notify() only does that in case of
1509 * change of state */
1510 if (state == SERVICE_EXITED && s->remain_after_exit &&
1511 UNIT(s)->manager->n_on_console > 0) {
1512 ExecContext *ec = unit_get_exec_context(UNIT(s));
1513 if (ec && exec_context_may_touch_console(ec)) {
1514 Manager *m = UNIT(s)->manager;
1517 if (m->n_on_console == 0)
1518 /* unset no_console_output flag, since the console is free */
1519 m->no_console_output = false;
1523 if (old_state != state)
1524 log_debug_unit(UNIT(s)->id, "%s changed %s -> %s", UNIT(s)->id, service_state_to_string(old_state), service_state_to_string(state));
1526 unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS);
1527 s->reload_result = SERVICE_SUCCESS;
1530 static int service_coldplug(Unit *u) {
1531 Service *s = SERVICE(u);
1535 assert(s->state == SERVICE_DEAD);
1537 if (s->deserialized_state != s->state) {
1539 if (IN_SET(s->deserialized_state,
1540 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1542 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1544 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1548 k = IN_SET(s->deserialized_state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD) ? s->timeout_start_usec : s->timeout_stop_usec;
1550 /* For the start/stop timeouts 0 means off */
1552 r = service_arm_timer(s, k);
1558 if (s->deserialized_state == SERVICE_AUTO_RESTART) {
1560 /* The restart timeouts 0 means immediately */
1561 r = service_arm_timer(s, s->restart_usec);
1566 if (pid_is_unwaited(s->main_pid) &&
1567 ((s->deserialized_state == SERVICE_START && IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_ONESHOT, SERVICE_NOTIFY)) ||
1568 IN_SET(s->deserialized_state,
1569 SERVICE_START, SERVICE_START_POST,
1570 SERVICE_RUNNING, SERVICE_RELOAD,
1571 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1573 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) {
1574 r = unit_watch_pid(UNIT(s), s->main_pid);
1579 if (pid_is_unwaited(s->control_pid) &&
1580 IN_SET(s->deserialized_state,
1581 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1583 SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
1585 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1586 r = unit_watch_pid(UNIT(s), s->control_pid);
1591 if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART))
1592 unit_watch_all_pids(UNIT(s));
1594 if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
1595 service_start_watchdog(s);
1597 service_set_state(s, s->deserialized_state);
1603 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1607 unsigned rn_fds = 0;
1614 if (s->socket_fd >= 0)
1617 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
1622 if (u->type != UNIT_SOCKET)
1627 r = socket_collect_fds(sock, &cfds, &cn_fds);
1640 t = new(int, rn_fds+cn_fds);
1647 memcpy(t, rfds, rn_fds * sizeof(int));
1648 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1653 rn_fds = rn_fds+cn_fds;
1668 static int service_spawn(
1673 bool apply_permissions,
1675 bool apply_tty_stdin,
1676 bool set_notify_socket,
1683 _cleanup_free_ int *fdsbuf = NULL;
1684 unsigned n_fds = 0, n_env = 0;
1685 _cleanup_strv_free_ char
1686 **argv = NULL, **final_env = NULL, **our_env = NULL;
1693 unit_realize_cgroup(UNIT(s));
1695 r = unit_setup_exec_runtime(UNIT(s));
1700 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1701 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1702 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1704 if (s->socket_fd >= 0) {
1705 fds = &s->socket_fd;
1708 r = service_collect_fds(s, &fdsbuf, &n_fds);
1716 if (timeout && s->timeout_start_usec > 0) {
1717 r = service_arm_timer(s, s->timeout_start_usec);
1721 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1723 r = unit_full_printf_strv(UNIT(s), c->argv, &argv);
1727 our_env = new0(char*, 4);
1733 if (set_notify_socket)
1734 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
1739 if (s->main_pid > 0)
1740 if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) {
1745 if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM)
1746 if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid()) < 0) {
1751 final_env = strv_env_merge(2, UNIT(s)->manager->environment, our_env, NULL);
1757 if (is_control && UNIT(s)->cgroup_path) {
1758 path = strappenda(UNIT(s)->cgroup_path, "/control");
1759 cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
1761 path = UNIT(s)->cgroup_path;
1771 UNIT(s)->manager->confirm_spawn,
1772 UNIT(s)->manager->cgroup_supported,
1774 manager_get_runtime_prefix(UNIT(s)->manager),
1777 s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL,
1783 r = unit_watch_pid(UNIT(s), pid);
1785 /* FIXME: we need to do something here */
1794 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1799 static int main_pid_good(Service *s) {
1802 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1805 /* If we know the pid file, then lets just check if it is
1807 if (s->main_pid_known) {
1809 /* If it's an alien child let's check if it is still
1811 if (s->main_pid_alien && s->main_pid > 0)
1812 return pid_is_alive(s->main_pid);
1814 /* .. otherwise assume we'll get a SIGCHLD for it,
1815 * which we really should wait for to collect exit
1816 * status and code */
1817 return s->main_pid > 0;
1820 /* We don't know the pid */
1824 _pure_ static int control_pid_good(Service *s) {
1827 return s->control_pid > 0;
1830 static int cgroup_good(Service *s) {
1835 if (!UNIT(s)->cgroup_path)
1838 r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path, true);
1845 static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
1849 if (f != SERVICE_SUCCESS)
1852 service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
1854 if (allow_restart &&
1855 !s->forbid_restart &&
1856 (s->restart == SERVICE_RESTART_ALWAYS ||
1857 (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
1858 (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
1859 (s->restart == SERVICE_RESTART_ON_WATCHDOG && s->result == SERVICE_FAILURE_WATCHDOG) ||
1860 (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL ||
1861 s->result == SERVICE_FAILURE_CORE_DUMP))) &&
1862 (s->result != SERVICE_FAILURE_EXIT_CODE ||
1863 !set_contains(s->restart_ignore_status.code, INT_TO_PTR(s->main_exec_status.status))) &&
1864 (s->result != SERVICE_FAILURE_SIGNAL ||
1865 !set_contains(s->restart_ignore_status.signal, INT_TO_PTR(s->main_exec_status.status)))) {
1867 r = service_arm_timer(s, s->restart_usec);
1871 service_set_state(s, SERVICE_AUTO_RESTART);
1874 s->forbid_restart = false;
1876 /* We want fresh tmpdirs in case service is started again immediately */
1877 exec_runtime_destroy(s->exec_runtime);
1878 s->exec_runtime = exec_runtime_unref(s->exec_runtime);
1880 /* Also, remove the runtime directory in */
1881 exec_context_destroy_runtime_directory(&s->exec_context, manager_get_runtime_prefix(UNIT(s)->manager));
1883 /* Try to delete the pid file. At this point it will be
1884 * out-of-date, and some software might be confused by it, so
1885 * let's remove it. */
1887 unlink_noerrno(s->pid_file);
1892 log_warning_unit(UNIT(s)->id,
1893 "%s failed to run install restart timer: %s",
1894 UNIT(s)->id, strerror(-r));
1895 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
1898 static void service_enter_stop_post(Service *s, ServiceResult f) {
1902 if (f != SERVICE_SUCCESS)
1905 service_unwatch_control_pid(s);
1906 unit_watch_all_pids(UNIT(s));
1908 s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST];
1909 if (s->control_command) {
1910 s->control_command_id = SERVICE_EXEC_STOP_POST;
1912 r = service_spawn(s,
1916 !s->permissions_start_only,
1917 !s->root_directory_start_only,
1925 service_set_state(s, SERVICE_STOP_POST);
1927 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS);
1932 log_warning_unit(UNIT(s)->id,
1933 "%s failed to run 'stop-post' task: %s",
1934 UNIT(s)->id, strerror(-r));
1935 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
1938 static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
1943 if (f != SERVICE_SUCCESS)
1946 unit_watch_all_pids(UNIT(s));
1948 r = unit_kill_context(
1951 state != SERVICE_STOP_SIGTERM && state != SERVICE_FINAL_SIGTERM,
1960 if (s->timeout_stop_usec > 0) {
1961 r = service_arm_timer(s, s->timeout_stop_usec);
1966 service_set_state(s, state);
1967 } else if (state == SERVICE_STOP_SIGTERM)
1968 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS);
1969 else if (state == SERVICE_STOP_SIGKILL)
1970 service_enter_stop_post(s, SERVICE_SUCCESS);
1971 else if (state == SERVICE_FINAL_SIGTERM)
1972 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS);
1974 service_enter_dead(s, SERVICE_SUCCESS, true);
1979 log_warning_unit(UNIT(s)->id,
1980 "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
1982 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1983 service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
1985 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
1988 static void service_enter_stop(Service *s, ServiceResult f) {
1993 if (f != SERVICE_SUCCESS)
1996 service_unwatch_control_pid(s);
1997 unit_watch_all_pids(UNIT(s));
1999 s->control_command = s->exec_command[SERVICE_EXEC_STOP];
2000 if (s->control_command) {
2001 s->control_command_id = SERVICE_EXEC_STOP;
2003 r = service_spawn(s,
2007 !s->permissions_start_only,
2008 !s->root_directory_start_only,
2016 service_set_state(s, SERVICE_STOP);
2018 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2023 log_warning_unit(UNIT(s)->id,
2024 "%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
2025 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2028 static void service_enter_running(Service *s, ServiceResult f) {
2029 int main_pid_ok, cgroup_ok;
2032 if (f != SERVICE_SUCCESS)
2035 main_pid_ok = main_pid_good(s);
2036 cgroup_ok = cgroup_good(s);
2038 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2039 (s->bus_name_good || s->type != SERVICE_DBUS))
2040 service_set_state(s, SERVICE_RUNNING);
2041 else if (s->remain_after_exit)
2042 service_set_state(s, SERVICE_EXITED);
2044 service_enter_stop(s, SERVICE_SUCCESS);
2047 static void service_enter_start_post(Service *s) {
2051 service_unwatch_control_pid(s);
2052 service_reset_watchdog(s);
2054 s->control_command = s->exec_command[SERVICE_EXEC_START_POST];
2055 if (s->control_command) {
2056 s->control_command_id = SERVICE_EXEC_START_POST;
2058 r = service_spawn(s,
2062 !s->permissions_start_only,
2063 !s->root_directory_start_only,
2071 service_set_state(s, SERVICE_START_POST);
2073 service_enter_running(s, SERVICE_SUCCESS);
2078 log_warning_unit(UNIT(s)->id,
2079 "%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
2080 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2083 static void service_kill_control_processes(Service *s) {
2086 if (!UNIT(s)->cgroup_path)
2089 p = strappenda(UNIT(s)->cgroup_path, "/control");
2090 cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, p, SIGKILL, true, true, true, NULL);
2093 static void service_enter_start(Service *s) {
2100 assert(s->exec_command[SERVICE_EXEC_START]);
2101 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2103 service_unwatch_control_pid(s);
2104 service_unwatch_main_pid(s);
2106 /* We want to ensure that nobody leaks processes from
2107 * START_PRE here, so let's go on a killing spree, People
2108 * should not spawn long running processes from START_PRE. */
2109 service_kill_control_processes(s);
2111 if (s->type == SERVICE_FORKING) {
2112 s->control_command_id = SERVICE_EXEC_START;
2113 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2115 s->main_command = NULL;
2117 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2118 s->control_command = NULL;
2120 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2123 r = service_spawn(s,
2125 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS ||
2126 s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT,
2131 s->notify_access != NOTIFY_NONE,
2137 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) {
2138 /* For simple services we immediately start
2139 * the START_POST binaries. */
2141 service_set_main_pid(s, pid);
2142 service_enter_start_post(s);
2144 } else if (s->type == SERVICE_FORKING) {
2146 /* For forking services we wait until the start
2147 * process exited. */
2149 s->control_pid = pid;
2150 service_set_state(s, SERVICE_START);
2152 } else if (s->type == SERVICE_ONESHOT ||
2153 s->type == SERVICE_DBUS ||
2154 s->type == SERVICE_NOTIFY) {
2156 /* For oneshot services we wait until the start
2157 * process exited, too, but it is our main process. */
2159 /* For D-Bus services we know the main pid right away,
2160 * but wait for the bus name to appear on the
2161 * bus. Notify services are similar. */
2163 service_set_main_pid(s, pid);
2164 service_set_state(s, SERVICE_START);
2166 assert_not_reached("Unknown service type");
2171 log_warning_unit(UNIT(s)->id,
2172 "%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
2173 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2176 static void service_enter_start_pre(Service *s) {
2181 service_unwatch_control_pid(s);
2183 s->control_command = s->exec_command[SERVICE_EXEC_START_PRE];
2184 if (s->control_command) {
2185 /* Before we start anything, let's clear up what might
2186 * be left from previous runs. */
2187 service_kill_control_processes(s);
2189 s->control_command_id = SERVICE_EXEC_START_PRE;
2191 r = service_spawn(s,
2195 !s->permissions_start_only,
2196 !s->root_directory_start_only,
2204 service_set_state(s, SERVICE_START_PRE);
2206 service_enter_start(s);
2211 log_warning_unit(UNIT(s)->id,
2212 "%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
2213 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2216 static void service_enter_restart(Service *s) {
2217 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2222 if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) {
2223 /* Don't restart things if we are going down anyway */
2224 log_info_unit(UNIT(s)->id,
2225 "Stop job pending for unit, delaying automatic restart.");
2227 r = service_arm_timer(s, s->restart_usec);
2234 /* Any units that are bound to this service must also be
2235 * restarted. We use JOB_RESTART (instead of the more obvious
2236 * JOB_START) here so that those dependency jobs will be added
2238 r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL);
2242 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
2243 * it will be canceled as part of the service_stop() call that
2244 * is executed as part of JOB_RESTART. */
2246 log_debug_unit(UNIT(s)->id,
2247 "%s scheduled restart job.", UNIT(s)->id);
2251 log_warning_unit(UNIT(s)->id,
2252 "%s failed to schedule restart job: %s",
2253 UNIT(s)->id, bus_error_message(&error, -r));
2254 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
2257 static void service_enter_reload(Service *s) {
2262 service_unwatch_control_pid(s);
2264 s->control_command = s->exec_command[SERVICE_EXEC_RELOAD];
2265 if (s->control_command) {
2266 s->control_command_id = SERVICE_EXEC_RELOAD;
2268 r = service_spawn(s,
2272 !s->permissions_start_only,
2273 !s->root_directory_start_only,
2281 service_set_state(s, SERVICE_RELOAD);
2283 service_enter_running(s, SERVICE_SUCCESS);
2288 log_warning_unit(UNIT(s)->id,
2289 "%s failed to run 'reload' task: %s",
2290 UNIT(s)->id, strerror(-r));
2291 s->reload_result = SERVICE_FAILURE_RESOURCES;
2292 service_enter_running(s, SERVICE_SUCCESS);
2295 static void service_run_next_control(Service *s) {
2299 assert(s->control_command);
2300 assert(s->control_command->command_next);
2302 assert(s->control_command_id != SERVICE_EXEC_START);
2304 s->control_command = s->control_command->command_next;
2305 service_unwatch_control_pid(s);
2307 r = service_spawn(s,
2311 !s->permissions_start_only,
2312 !s->root_directory_start_only,
2313 s->control_command_id == SERVICE_EXEC_START_PRE ||
2314 s->control_command_id == SERVICE_EXEC_STOP_POST,
2324 log_warning_unit(UNIT(s)->id,
2325 "%s failed to run next control task: %s",
2326 UNIT(s)->id, strerror(-r));
2328 if (s->state == SERVICE_START_PRE)
2329 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2330 else if (s->state == SERVICE_STOP)
2331 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2332 else if (s->state == SERVICE_STOP_POST)
2333 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2334 else if (s->state == SERVICE_RELOAD) {
2335 s->reload_result = SERVICE_FAILURE_RESOURCES;
2336 service_enter_running(s, SERVICE_SUCCESS);
2338 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2341 static void service_run_next_main(Service *s) {
2346 assert(s->main_command);
2347 assert(s->main_command->command_next);
2348 assert(s->type == SERVICE_ONESHOT);
2350 s->main_command = s->main_command->command_next;
2351 service_unwatch_main_pid(s);
2353 r = service_spawn(s,
2360 s->notify_access != NOTIFY_NONE,
2366 service_set_main_pid(s, pid);
2371 log_warning_unit(UNIT(s)->id,
2372 "%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
2373 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2376 static int service_start_limit_test(Service *s) {
2379 if (ratelimit_test(&s->start_limit))
2382 switch (s->start_limit_action) {
2384 case SERVICE_START_LIMIT_NONE:
2385 log_warning_unit(UNIT(s)->id,
2386 "%s start request repeated too quickly, refusing to start.",
2390 case SERVICE_START_LIMIT_REBOOT: {
2391 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2394 log_warning_unit(UNIT(s)->id,
2395 "%s start request repeated too quickly, rebooting.", UNIT(s)->id);
2397 r = manager_add_job_by_name(UNIT(s)->manager, JOB_START,
2398 SPECIAL_REBOOT_TARGET, JOB_REPLACE,
2399 true, &error, NULL);
2401 log_error_unit(UNIT(s)->id,
2402 "Failed to reboot: %s.", bus_error_message(&error, r));
2407 case SERVICE_START_LIMIT_REBOOT_FORCE:
2408 log_warning_unit(UNIT(s)->id,
2409 "%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id);
2410 UNIT(s)->manager->exit_code = MANAGER_REBOOT;
2413 case SERVICE_START_LIMIT_REBOOT_IMMEDIATE:
2414 log_warning_unit(UNIT(s)->id,
2415 "%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id);
2417 reboot(RB_AUTOBOOT);
2421 log_error_unit(UNIT(s)->id,
2422 "start limit action=%i", s->start_limit_action);
2423 assert_not_reached("Unknown StartLimitAction.");
2429 static int service_start(Unit *u) {
2430 Service *s = SERVICE(u);
2435 /* We cannot fulfill this request right now, try again later
2437 if (s->state == SERVICE_STOP ||
2438 s->state == SERVICE_STOP_SIGTERM ||
2439 s->state == SERVICE_STOP_SIGKILL ||
2440 s->state == SERVICE_STOP_POST ||
2441 s->state == SERVICE_FINAL_SIGTERM ||
2442 s->state == SERVICE_FINAL_SIGKILL)
2445 /* Already on it! */
2446 if (s->state == SERVICE_START_PRE ||
2447 s->state == SERVICE_START ||
2448 s->state == SERVICE_START_POST)
2451 /* A service that will be restarted must be stopped first to
2452 * trigger BindsTo and/or OnFailure dependencies. If a user
2453 * does not want to wait for the holdoff time to elapse, the
2454 * service should be manually restarted, not started. We
2455 * simply return EAGAIN here, so that any start jobs stay
2456 * queued, and assume that the auto restart timer will
2457 * eventually trigger the restart. */
2458 if (s->state == SERVICE_AUTO_RESTART)
2461 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED);
2463 /* Make sure we don't enter a busy loop of some kind. */
2464 r = service_start_limit_test(s);
2466 service_enter_dead(s, SERVICE_FAILURE_START_LIMIT, false);
2470 s->result = SERVICE_SUCCESS;
2471 s->reload_result = SERVICE_SUCCESS;
2472 s->main_pid_known = false;
2473 s->main_pid_alien = false;
2474 s->forbid_restart = false;
2476 service_enter_start_pre(s);
2480 static int service_stop(Unit *u) {
2481 Service *s = SERVICE(u);
2485 /* Don't create restart jobs from here. */
2486 s->forbid_restart = true;
2489 if (s->state == SERVICE_STOP ||
2490 s->state == SERVICE_STOP_SIGTERM ||
2491 s->state == SERVICE_STOP_SIGKILL ||
2492 s->state == SERVICE_STOP_POST ||
2493 s->state == SERVICE_FINAL_SIGTERM ||
2494 s->state == SERVICE_FINAL_SIGKILL)
2497 /* A restart will be scheduled or is in progress. */
2498 if (s->state == SERVICE_AUTO_RESTART) {
2499 service_set_state(s, SERVICE_DEAD);
2503 /* If there's already something running we go directly into
2505 if (s->state == SERVICE_START_PRE ||
2506 s->state == SERVICE_START ||
2507 s->state == SERVICE_START_POST ||
2508 s->state == SERVICE_RELOAD) {
2509 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2513 assert(s->state == SERVICE_RUNNING ||
2514 s->state == SERVICE_EXITED);
2516 service_enter_stop(s, SERVICE_SUCCESS);
2520 static int service_reload(Unit *u) {
2521 Service *s = SERVICE(u);
2525 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2527 service_enter_reload(s);
2531 _pure_ static bool service_can_reload(Unit *u) {
2532 Service *s = SERVICE(u);
2536 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2539 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2540 Service *s = SERVICE(u);
2546 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2547 unit_serialize_item(u, f, "result", service_result_to_string(s->result));
2548 unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
2550 if (s->control_pid > 0)
2551 unit_serialize_item_format(u, f, "control-pid", PID_FMT,
2554 if (s->main_pid_known && s->main_pid > 0)
2555 unit_serialize_item_format(u, f, "main-pid", PID_FMT, s->main_pid);
2557 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2560 unit_serialize_item(u, f, "status-text", s->status_text);
2562 /* FIXME: There's a minor uncleanliness here: if there are
2563 * multiple commands attached here, we will start from the
2564 * first one again */
2565 if (s->control_command_id >= 0)
2566 unit_serialize_item(u, f, "control-command",
2567 service_exec_command_to_string(s->control_command_id));
2569 if (s->socket_fd >= 0) {
2572 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2575 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2578 if (s->main_exec_status.pid > 0) {
2579 unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT,
2580 s->main_exec_status.pid);
2581 dual_timestamp_serialize(f, "main-exec-status-start",
2582 &s->main_exec_status.start_timestamp);
2583 dual_timestamp_serialize(f, "main-exec-status-exit",
2584 &s->main_exec_status.exit_timestamp);
2586 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2587 unit_serialize_item_format(u, f, "main-exec-status-code", "%i",
2588 s->main_exec_status.code);
2589 unit_serialize_item_format(u, f, "main-exec-status-status", "%i",
2590 s->main_exec_status.status);
2593 if (dual_timestamp_is_set(&s->watchdog_timestamp))
2594 dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
2596 if (s->forbid_restart)
2597 unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart));
2602 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2603 Service *s = SERVICE(u);
2610 if (streq(key, "state")) {
2613 state = service_state_from_string(value);
2615 log_debug_unit(u->id, "Failed to parse state value %s", value);
2617 s->deserialized_state = state;
2618 } else if (streq(key, "result")) {
2621 f = service_result_from_string(value);
2623 log_debug_unit(u->id, "Failed to parse result value %s", value);
2624 else if (f != SERVICE_SUCCESS)
2627 } else if (streq(key, "reload-result")) {
2630 f = service_result_from_string(value);
2632 log_debug_unit(u->id, "Failed to parse reload result value %s", value);
2633 else if (f != SERVICE_SUCCESS)
2634 s->reload_result = f;
2636 } else if (streq(key, "control-pid")) {
2639 if (parse_pid(value, &pid) < 0)
2640 log_debug_unit(u->id, "Failed to parse control-pid value %s", value);
2642 s->control_pid = pid;
2643 } else if (streq(key, "main-pid")) {
2646 if (parse_pid(value, &pid) < 0)
2647 log_debug_unit(u->id, "Failed to parse main-pid value %s", value);
2649 service_set_main_pid(s, pid);
2650 unit_watch_pid(UNIT(s), pid);
2652 } else if (streq(key, "main-pid-known")) {
2655 b = parse_boolean(value);
2657 log_debug_unit(u->id, "Failed to parse main-pid-known value %s", value);
2659 s->main_pid_known = b;
2660 } else if (streq(key, "status-text")) {
2667 free(s->status_text);
2671 } else if (streq(key, "control-command")) {
2672 ServiceExecCommand id;
2674 id = service_exec_command_from_string(value);
2676 log_debug_unit(u->id, "Failed to parse exec-command value %s", value);
2678 s->control_command_id = id;
2679 s->control_command = s->exec_command[id];
2681 } else if (streq(key, "socket-fd")) {
2684 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2685 log_debug_unit(u->id, "Failed to parse socket-fd value %s", value);
2688 safe_close(s->socket_fd);
2689 s->socket_fd = fdset_remove(fds, fd);
2691 } else if (streq(key, "main-exec-status-pid")) {
2694 if (parse_pid(value, &pid) < 0)
2695 log_debug_unit(u->id, "Failed to parse main-exec-status-pid value %s", value);
2697 s->main_exec_status.pid = pid;
2698 } else if (streq(key, "main-exec-status-code")) {
2701 if (safe_atoi(value, &i) < 0)
2702 log_debug_unit(u->id, "Failed to parse main-exec-status-code value %s", value);
2704 s->main_exec_status.code = i;
2705 } else if (streq(key, "main-exec-status-status")) {
2708 if (safe_atoi(value, &i) < 0)
2709 log_debug_unit(u->id, "Failed to parse main-exec-status-status value %s", value);
2711 s->main_exec_status.status = i;
2712 } else if (streq(key, "main-exec-status-start"))
2713 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2714 else if (streq(key, "main-exec-status-exit"))
2715 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2716 else if (streq(key, "watchdog-timestamp"))
2717 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
2718 else if (streq(key, "forbid-restart")) {
2721 b = parse_boolean(value);
2723 log_debug_unit(u->id, "Failed to parse forbid-restart value %s", value);
2725 s->forbid_restart = b;
2727 log_debug_unit(u->id, "Unknown serialization key '%s'", key);
2732 _pure_ static UnitActiveState service_active_state(Unit *u) {
2733 const UnitActiveState *table;
2737 table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
2739 return table[SERVICE(u)->state];
2742 static const char *service_sub_state_to_string(Unit *u) {
2745 return service_state_to_string(SERVICE(u)->state);
2748 static bool service_check_gc(Unit *u) {
2749 Service *s = SERVICE(u);
2753 /* Never clean up services that still have a process around,
2754 * even if the service is formally dead. */
2755 if (cgroup_good(s) > 0 ||
2756 main_pid_good(s) > 0 ||
2757 control_pid_good(s) > 0)
2760 #ifdef HAVE_SYSV_COMPAT
2768 _pure_ static bool service_check_snapshot(Unit *u) {
2769 Service *s = SERVICE(u);
2773 return (s->socket_fd < 0);
2776 static int service_retry_pid_file(Service *s) {
2779 assert(s->pid_file);
2780 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2782 r = service_load_pid_file(s, false);
2786 service_unwatch_pid_file(s);
2788 service_enter_running(s, SERVICE_SUCCESS);
2792 static int service_watch_pid_file(Service *s) {
2795 log_debug_unit(UNIT(s)->id,
2796 "Setting watch for %s's PID file %s",
2797 UNIT(s)->id, s->pid_file_pathspec->path);
2798 r = path_spec_watch(s->pid_file_pathspec, service_dispatch_io);
2802 /* the pidfile might have appeared just before we set the watch */
2803 log_debug_unit(UNIT(s)->id,
2804 "Trying to read %s's PID file %s in case it changed",
2805 UNIT(s)->id, s->pid_file_pathspec->path);
2806 service_retry_pid_file(s);
2810 log_error_unit(UNIT(s)->id,
2811 "Failed to set a watch for %s's PID file %s: %s",
2812 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
2813 service_unwatch_pid_file(s);
2817 static int service_demand_pid_file(Service *s) {
2820 assert(s->pid_file);
2821 assert(!s->pid_file_pathspec);
2823 ps = new0(PathSpec, 1);
2828 ps->path = strdup(s->pid_file);
2834 path_kill_slashes(ps->path);
2836 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2837 * keep their PID file open all the time. */
2838 ps->type = PATH_MODIFIED;
2839 ps->inotify_fd = -1;
2841 s->pid_file_pathspec = ps;
2843 return service_watch_pid_file(s);
2846 static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata) {
2847 PathSpec *p = userdata;
2852 s = SERVICE(p->unit);
2856 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2857 assert(s->pid_file_pathspec);
2858 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2860 log_debug_unit(UNIT(s)->id, "inotify event for %s", UNIT(s)->id);
2862 if (path_spec_fd_event(p, events) < 0)
2865 if (service_retry_pid_file(s) == 0)
2868 if (service_watch_pid_file(s) < 0)
2874 service_unwatch_pid_file(s);
2875 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2879 static void service_notify_cgroup_empty_event(Unit *u) {
2880 Service *s = SERVICE(u);
2884 log_debug_unit(u->id, "%s: cgroup is empty", u->id);
2888 /* Waiting for SIGCHLD is usually more interesting,
2889 * because it includes return codes/signals. Which is
2890 * why we ignore the cgroup events for most cases,
2891 * except when we don't know pid which to expect the
2895 case SERVICE_START_POST:
2896 /* If we were hoping for the daemon to write its PID file,
2897 * we can give up now. */
2898 if (s->pid_file_pathspec) {
2899 log_warning_unit(u->id,
2900 "%s never wrote its PID file. Failing.", UNIT(s)->id);
2901 service_unwatch_pid_file(s);
2902 if (s->state == SERVICE_START)
2903 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2905 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2909 case SERVICE_RUNNING:
2910 /* service_enter_running() will figure out what to do */
2911 service_enter_running(s, SERVICE_SUCCESS);
2914 case SERVICE_STOP_SIGTERM:
2915 case SERVICE_STOP_SIGKILL:
2917 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2918 service_enter_stop_post(s, SERVICE_SUCCESS);
2922 case SERVICE_STOP_POST:
2923 case SERVICE_FINAL_SIGTERM:
2924 case SERVICE_FINAL_SIGKILL:
2925 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2926 service_enter_dead(s, SERVICE_SUCCESS, true);
2935 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2936 Service *s = SERVICE(u);
2942 if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) :
2943 is_clean_exit_lsb(code, status, &s->success_status))
2944 f = SERVICE_SUCCESS;
2945 else if (code == CLD_EXITED)
2946 f = SERVICE_FAILURE_EXIT_CODE;
2947 else if (code == CLD_KILLED)
2948 f = SERVICE_FAILURE_SIGNAL;
2949 else if (code == CLD_DUMPED)
2950 f = SERVICE_FAILURE_CORE_DUMP;
2952 assert_not_reached("Unknown code");
2954 if (s->main_pid == pid) {
2955 /* Forking services may occasionally move to a new PID.
2956 * As long as they update the PID file before exiting the old
2957 * PID, they're fine. */
2958 if (service_load_pid_file(s, false) == 0)
2962 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2964 if (s->main_command) {
2965 /* If this is not a forking service than the
2966 * main process got started and hence we copy
2967 * the exit status so that it is recorded both
2968 * as main and as control process exit
2971 s->main_command->exec_status = s->main_exec_status;
2973 if (s->main_command->ignore)
2974 f = SERVICE_SUCCESS;
2975 } else if (s->exec_command[SERVICE_EXEC_START]) {
2977 /* If this is a forked process, then we should
2978 * ignore the return value if this was
2979 * configured for the starter process */
2981 if (s->exec_command[SERVICE_EXEC_START]->ignore)
2982 f = SERVICE_SUCCESS;
2985 log_struct_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2987 "MESSAGE=%s: main process exited, code=%s, status=%i/%s",
2988 u->id, sigchld_code_to_string(code), status,
2989 strna(code == CLD_EXITED
2990 ? exit_status_to_string(status, EXIT_STATUS_FULL)
2991 : signal_to_string(status)),
2992 "EXIT_CODE=%s", sigchld_code_to_string(code),
2993 "EXIT_STATUS=%i", status,
2996 if (f != SERVICE_SUCCESS)
2999 if (s->main_command &&
3000 s->main_command->command_next &&
3001 f == SERVICE_SUCCESS) {
3003 /* There is another command to *
3004 * execute, so let's do that. */
3006 log_debug_unit(u->id,
3007 "%s running next main command for state %s",
3008 u->id, service_state_to_string(s->state));
3009 service_run_next_main(s);
3013 /* The service exited, so the service is officially
3015 s->main_command = NULL;
3019 case SERVICE_START_POST:
3020 case SERVICE_RELOAD:
3022 /* Need to wait until the operation is
3027 if (s->type == SERVICE_ONESHOT) {
3028 /* This was our main goal, so let's go on */
3029 if (f == SERVICE_SUCCESS)
3030 service_enter_start_post(s);
3032 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3038 case SERVICE_RUNNING:
3039 service_enter_running(s, f);
3042 case SERVICE_STOP_SIGTERM:
3043 case SERVICE_STOP_SIGKILL:
3045 if (!control_pid_good(s))
3046 service_enter_stop_post(s, f);
3048 /* If there is still a control process, wait for that first */
3051 case SERVICE_STOP_POST:
3052 case SERVICE_FINAL_SIGTERM:
3053 case SERVICE_FINAL_SIGKILL:
3055 if (!control_pid_good(s))
3056 service_enter_dead(s, f, true);
3060 assert_not_reached("Uh, main process died at wrong time.");
3064 } else if (s->control_pid == pid) {
3067 if (s->control_command) {
3068 exec_status_exit(&s->control_command->exec_status,
3069 &s->exec_context, pid, code, status);
3071 if (s->control_command->ignore)
3072 f = SERVICE_SUCCESS;
3075 log_full_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, u->id,
3076 "%s: control process exited, code=%s status=%i",
3077 u->id, sigchld_code_to_string(code), status);
3079 if (f != SERVICE_SUCCESS)
3082 /* Immediately get rid of the cgroup, so that the
3083 * kernel doesn't delay the cgroup empty messages for
3084 * the service cgroup any longer than necessary */
3085 service_kill_control_processes(s);
3087 if (s->control_command &&
3088 s->control_command->command_next &&
3089 f == SERVICE_SUCCESS) {
3091 /* There is another command to *
3092 * execute, so let's do that. */
3094 log_debug_unit(u->id,
3095 "%s running next control command for state %s",
3096 u->id, service_state_to_string(s->state));
3097 service_run_next_control(s);
3100 /* No further commands for this step, so let's
3101 * figure out what to do next */
3103 s->control_command = NULL;
3104 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
3106 log_debug_unit(u->id,
3107 "%s got final SIGCHLD for state %s",
3108 u->id, service_state_to_string(s->state));
3112 case SERVICE_START_PRE:
3113 if (f == SERVICE_SUCCESS)
3114 service_enter_start(s);
3116 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3120 if (s->type != SERVICE_FORKING)
3121 /* Maybe spurious event due to a reload that changed the type? */
3124 if (f != SERVICE_SUCCESS) {
3125 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3130 bool has_start_post;
3133 /* Let's try to load the pid file here if we can.
3134 * The PID file might actually be created by a START_POST
3135 * script. In that case don't worry if the loading fails. */
3137 has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
3138 r = service_load_pid_file(s, !has_start_post);
3139 if (!has_start_post && r < 0) {
3140 r = service_demand_pid_file(s);
3141 if (r < 0 || !cgroup_good(s))
3142 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3146 service_search_main_pid(s);
3148 service_enter_start_post(s);
3151 case SERVICE_START_POST:
3152 if (f != SERVICE_SUCCESS) {
3153 service_enter_stop(s, f);
3160 r = service_load_pid_file(s, true);
3162 r = service_demand_pid_file(s);
3163 if (r < 0 || !cgroup_good(s))
3164 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3168 service_search_main_pid(s);
3170 service_enter_running(s, SERVICE_SUCCESS);
3173 case SERVICE_RELOAD:
3174 if (f == SERVICE_SUCCESS) {
3175 service_load_pid_file(s, true);
3176 service_search_main_pid(s);
3179 s->reload_result = f;
3180 service_enter_running(s, SERVICE_SUCCESS);
3184 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
3187 case SERVICE_STOP_SIGTERM:
3188 case SERVICE_STOP_SIGKILL:
3189 if (main_pid_good(s) <= 0)
3190 service_enter_stop_post(s, f);
3192 /* If there is still a service
3193 * process around, wait until
3194 * that one quit, too */
3197 case SERVICE_STOP_POST:
3198 case SERVICE_FINAL_SIGTERM:
3199 case SERVICE_FINAL_SIGKILL:
3200 if (main_pid_good(s) <= 0)
3201 service_enter_dead(s, f, true);
3205 assert_not_reached("Uh, control process died at wrong time.");
3210 /* Notify clients about changed exit status */
3211 unit_add_to_dbus_queue(u);
3213 /* We got one SIGCHLD for the service, let's watch all
3214 * processes that are now running of the service, and watch
3215 * that. Among the PIDs we then watch will be children
3216 * reassigned to us, which hopefully allows us to identify
3217 * when all children are gone */
3218 unit_tidy_watch_pids(u, s->main_pid, s->control_pid);
3219 unit_watch_all_pids(u);
3221 /* If the PID set is empty now, then let's finish this off */
3222 if (set_isempty(u->pids))
3223 service_notify_cgroup_empty_event(u);
3226 static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) {
3227 Service *s = SERVICE(userdata);
3230 assert(source == s->timer_event_source);
3234 case SERVICE_START_PRE:
3236 log_warning_unit(UNIT(s)->id,
3237 "%s %s operation timed out. Terminating.",
3239 s->state == SERVICE_START ? "start" : "start-pre");
3240 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3243 case SERVICE_START_POST:
3244 log_warning_unit(UNIT(s)->id,
3245 "%s start-post operation timed out. Stopping.", UNIT(s)->id);
3246 service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
3249 case SERVICE_RELOAD:
3250 log_warning_unit(UNIT(s)->id,
3251 "%s reload operation timed out. Stopping.", UNIT(s)->id);
3252 s->reload_result = SERVICE_FAILURE_TIMEOUT;
3253 service_enter_running(s, SERVICE_SUCCESS);
3257 log_warning_unit(UNIT(s)->id,
3258 "%s stopping timed out. Terminating.", UNIT(s)->id);
3259 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3262 case SERVICE_STOP_SIGTERM:
3263 if (s->kill_context.send_sigkill) {
3264 log_warning_unit(UNIT(s)->id,
3265 "%s stop-sigterm timed out. Killing.", UNIT(s)->id);
3266 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3268 log_warning_unit(UNIT(s)->id,
3269 "%s stop-sigterm timed out. Skipping SIGKILL.", UNIT(s)->id);
3270 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3275 case SERVICE_STOP_SIGKILL:
3276 /* Uh, we sent a SIGKILL and it is still not gone?
3277 * Must be something we cannot kill, so let's just be
3278 * weirded out and continue */
3280 log_warning_unit(UNIT(s)->id,
3281 "%s still around after SIGKILL. Ignoring.", UNIT(s)->id);
3282 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3285 case SERVICE_STOP_POST:
3286 log_warning_unit(UNIT(s)->id,
3287 "%s stop-post timed out. Terminating.", UNIT(s)->id);
3288 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3291 case SERVICE_FINAL_SIGTERM:
3292 if (s->kill_context.send_sigkill) {
3293 log_warning_unit(UNIT(s)->id,
3294 "%s stop-final-sigterm timed out. Killing.", UNIT(s)->id);
3295 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3297 log_warning_unit(UNIT(s)->id,
3298 "%s stop-final-sigterm timed out. Skipping SIGKILL. Entering failed mode.",
3300 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
3305 case SERVICE_FINAL_SIGKILL:
3306 log_warning_unit(UNIT(s)->id,
3307 "%s still around after final SIGKILL. Entering failed mode.", UNIT(s)->id);
3308 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
3311 case SERVICE_AUTO_RESTART:
3312 log_info_unit(UNIT(s)->id,
3313 s->restart_usec > 0 ?
3314 "%s holdoff time over, scheduling restart." :
3315 "%s has no holdoff time, scheduling restart.",
3317 service_enter_restart(s);
3321 assert_not_reached("Timeout at wrong time.");
3327 static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) {
3328 Service *s = SERVICE(userdata);
3331 assert(source == s->watchdog_event_source);
3333 log_error_unit(UNIT(s)->id, "%s watchdog timeout!", UNIT(s)->id);
3334 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_WATCHDOG);
3339 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3340 Service *s = SERVICE(u);
3342 bool notify_dbus = false;
3346 log_debug_unit(u->id, "%s: Got notification message from PID "PID_FMT" (%s...)",
3347 u->id, pid, tags && *tags ? tags[0] : "(empty)");
3349 if (s->notify_access == NOTIFY_NONE) {
3350 log_warning_unit(u->id,
3351 "%s: Got notification message from PID "PID_FMT", but reception is disabled.",
3356 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3358 if (s->main_pid != 0)
3359 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);
3361 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);
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, "Failed to parse notification message %s", e);
3375 log_debug_unit(u->id, "%s: got %s", u->id, e);
3376 service_set_main_pid(s, pid);
3377 unit_watch_pid(UNIT(s), pid);
3382 /* Interpret READY= */
3383 if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START && strv_find(tags, "READY=1")) {
3384 log_debug_unit(u->id, "%s: got READY=1", u->id);
3385 service_enter_start_post(s);
3389 /* Interpret STATUS= */
3390 e = strv_find_prefix(tags, "STATUS=");
3395 if (!utf8_is_valid(e+7)) {
3396 log_warning_unit(u->id, "Status message in notification is not UTF-8 clean.");
3400 log_debug_unit(u->id, "%s: got %s", u->id, e);
3411 if (!streq_ptr(s->status_text, t)) {
3412 free(s->status_text);
3419 /* Interpret WATCHDOG= */
3420 if (strv_find(tags, "WATCHDOG=1")) {
3421 log_debug_unit(u->id, "%s: got WATCHDOG=1", u->id);
3422 service_reset_watchdog(s);
3425 /* Notify clients about changed status or main pid */
3427 unit_add_to_dbus_queue(u);
3430 static int service_get_timeout(Unit *u, uint64_t *timeout) {
3431 Service *s = SERVICE(u);
3434 if (!s->timer_event_source)
3437 r = sd_event_source_get_time(s->timer_event_source, timeout);
3444 #ifdef HAVE_SYSV_COMPAT
3446 static int service_enumerate(Manager *m) {
3449 _cleanup_closedir_ DIR *d = NULL;
3450 _cleanup_free_ char *path = NULL, *fpath = NULL, *name = NULL;
3451 Set *runlevel_services[ELEMENTSOF(rcnd_table)] = {};
3452 _cleanup_set_free_ Set *shutdown_services = NULL;
3459 if (m->running_as != SYSTEMD_SYSTEM)
3462 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3463 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3467 path = strjoin(*p, "/", rcnd_table[i].path, NULL);
3478 if (errno != ENOENT)
3479 log_warning("opendir(%s) failed: %m", path);
3484 while ((de = readdir(d))) {
3487 if (ignore_file(de->d_name))
3490 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3493 if (strlen(de->d_name) < 4)
3496 a = undecchar(de->d_name[1]);
3497 b = undecchar(de->d_name[2]);
3503 fpath = strjoin(path, "/", de->d_name, NULL);
3509 if (access(fpath, X_OK) < 0) {
3511 if (errno != ENOENT)
3512 log_warning("access() failed on %s: %m", fpath);
3518 name = sysv_translate_name(de->d_name + 3);
3524 r = manager_load_unit_prepare(m, name, NULL, NULL, &service);
3526 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3530 if (de->d_name[0] == 'S') {
3532 if (rcnd_table[i].type == RUNLEVEL_UP) {
3533 SERVICE(service)->sysv_start_priority_from_rcnd =
3534 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3536 SERVICE(service)->sysv_enabled = true;
3539 r = set_ensure_allocated(&runlevel_services[i],
3540 trivial_hash_func, trivial_compare_func);
3544 r = set_put(runlevel_services[i], service);
3548 } else if (de->d_name[0] == 'K' &&
3549 (rcnd_table[i].type == RUNLEVEL_DOWN)) {
3551 r = set_ensure_allocated(&shutdown_services,
3552 trivial_hash_func, trivial_compare_func);
3556 r = set_put(shutdown_services, service);
3563 /* Now we loaded all stubs and are aware of the lowest
3564 start-up priority for all services, not let's actually load
3565 the services, this will also tell us which services are
3566 actually native now */
3567 manager_dispatch_load_queue(m);
3569 /* If this is a native service, rely on native ways to pull in
3570 * a service, don't pull it in via sysv rcN.d links. */
3571 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3572 SET_FOREACH(service, runlevel_services[i], j) {
3573 service = unit_follow_merge(service);
3575 if (service->fragment_path)
3578 r = unit_add_two_dependencies_by_name_inverse(
3579 service, UNIT_AFTER, UNIT_WANTS,
3580 rcnd_table[i].target, NULL, true);
3585 /* We honour K links only for halt/reboot. For the normal
3586 * runlevels we assume the stop jobs will be implicitly added
3587 * by the core logic. Also, we don't really distinguish here
3588 * between the runlevels 0 and 6 and just add them to the
3589 * special shutdown target. */
3590 SET_FOREACH(service, shutdown_services, j) {
3591 service = unit_follow_merge(service);
3593 if (service->fragment_path)
3596 r = unit_add_two_dependencies_by_name(
3597 service, UNIT_BEFORE, UNIT_CONFLICTS,
3598 SPECIAL_SHUTDOWN_TARGET, NULL, true);
3607 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3608 set_free(runlevel_services[i]);
3614 static void service_bus_name_owner_change(
3617 const char *old_owner,
3618 const char *new_owner) {
3620 Service *s = SERVICE(u);
3626 assert(streq(s->bus_name, name));
3627 assert(old_owner || new_owner);
3629 if (old_owner && new_owner)
3630 log_debug_unit(u->id,
3631 "%s's D-Bus name %s changed owner from %s to %s",
3632 u->id, name, old_owner, new_owner);
3634 log_debug_unit(u->id,
3635 "%s's D-Bus name %s no longer registered by %s",
3636 u->id, name, old_owner);
3638 log_debug_unit(u->id,
3639 "%s's D-Bus name %s now registered by %s",
3640 u->id, name, new_owner);
3642 s->bus_name_good = !!new_owner;
3644 if (s->type == SERVICE_DBUS) {
3646 /* service_enter_running() will figure out what to
3648 if (s->state == SERVICE_RUNNING)
3649 service_enter_running(s, SERVICE_SUCCESS);
3650 else if (s->state == SERVICE_START && new_owner)
3651 service_enter_start_post(s);
3653 } else if (new_owner &&
3655 (s->state == SERVICE_START ||
3656 s->state == SERVICE_START_POST ||
3657 s->state == SERVICE_RUNNING ||
3658 s->state == SERVICE_RELOAD)) {
3660 _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
3663 /* Try to acquire PID from bus service */
3665 r = sd_bus_get_owner(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds);
3667 r = sd_bus_creds_get_pid(creds, &pid);
3669 log_debug_unit(u->id, "%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
3671 service_set_main_pid(s, pid);
3672 unit_watch_pid(UNIT(s), pid);
3677 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3678 _cleanup_free_ char *peer = NULL;
3684 /* This is called by the socket code when instantiating a new
3685 * service for a stream socket and the socket needs to be
3688 if (UNIT(s)->load_state != UNIT_LOADED)
3691 if (s->socket_fd >= 0)
3694 if (s->state != SERVICE_DEAD)
3697 if (getpeername_pretty(fd, &peer) >= 0) {
3699 if (UNIT(s)->description) {
3700 _cleanup_free_ char *a;
3702 a = strjoin(UNIT(s)->description, " (", peer, ")", NULL);
3706 r = unit_set_description(UNIT(s), a);
3708 r = unit_set_description(UNIT(s), peer);
3716 unit_ref_set(&s->accept_socket, UNIT(sock));
3718 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3721 static void service_reset_failed(Unit *u) {
3722 Service *s = SERVICE(u);
3726 if (s->state == SERVICE_FAILED)
3727 service_set_state(s, SERVICE_DEAD);
3729 s->result = SERVICE_SUCCESS;
3730 s->reload_result = SERVICE_SUCCESS;
3732 RATELIMIT_RESET(s->start_limit);
3735 static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) {
3736 Service *s = SERVICE(u);
3738 return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error);
3741 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3742 [SERVICE_DEAD] = "dead",
3743 [SERVICE_START_PRE] = "start-pre",
3744 [SERVICE_START] = "start",
3745 [SERVICE_START_POST] = "start-post",
3746 [SERVICE_RUNNING] = "running",
3747 [SERVICE_EXITED] = "exited",
3748 [SERVICE_RELOAD] = "reload",
3749 [SERVICE_STOP] = "stop",
3750 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3751 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3752 [SERVICE_STOP_POST] = "stop-post",
3753 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3754 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3755 [SERVICE_FAILED] = "failed",
3756 [SERVICE_AUTO_RESTART] = "auto-restart",
3759 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3761 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3762 [SERVICE_RESTART_NO] = "no",
3763 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3764 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3765 [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog",
3766 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3767 [SERVICE_RESTART_ALWAYS] = "always"
3770 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3772 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3773 [SERVICE_SIMPLE] = "simple",
3774 [SERVICE_FORKING] = "forking",
3775 [SERVICE_ONESHOT] = "oneshot",
3776 [SERVICE_DBUS] = "dbus",
3777 [SERVICE_NOTIFY] = "notify",
3778 [SERVICE_IDLE] = "idle"
3781 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3783 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3784 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3785 [SERVICE_EXEC_START] = "ExecStart",
3786 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3787 [SERVICE_EXEC_RELOAD] = "ExecReload",
3788 [SERVICE_EXEC_STOP] = "ExecStop",
3789 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3792 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3794 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3795 [NOTIFY_NONE] = "none",
3796 [NOTIFY_MAIN] = "main",
3797 [NOTIFY_ALL] = "all"
3800 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3802 static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
3803 [SERVICE_SUCCESS] = "success",
3804 [SERVICE_FAILURE_RESOURCES] = "resources",
3805 [SERVICE_FAILURE_TIMEOUT] = "timeout",
3806 [SERVICE_FAILURE_EXIT_CODE] = "exit-code",
3807 [SERVICE_FAILURE_SIGNAL] = "signal",
3808 [SERVICE_FAILURE_CORE_DUMP] = "core-dump",
3809 [SERVICE_FAILURE_WATCHDOG] = "watchdog",
3810 [SERVICE_FAILURE_START_LIMIT] = "start-limit"
3813 DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
3815 static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = {
3816 [SERVICE_START_LIMIT_NONE] = "none",
3817 [SERVICE_START_LIMIT_REBOOT] = "reboot",
3818 [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force",
3819 [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate"
3821 DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction);
3823 const UnitVTable service_vtable = {
3824 .object_size = sizeof(Service),
3825 .exec_context_offset = offsetof(Service, exec_context),
3826 .cgroup_context_offset = offsetof(Service, cgroup_context),
3827 .kill_context_offset = offsetof(Service, kill_context),
3828 .exec_runtime_offset = offsetof(Service, exec_runtime),
3834 .private_section = "Service",
3836 .init = service_init,
3837 .done = service_done,
3838 .load = service_load,
3840 .coldplug = service_coldplug,
3842 .dump = service_dump,
3844 .start = service_start,
3845 .stop = service_stop,
3846 .reload = service_reload,
3848 .can_reload = service_can_reload,
3850 .kill = service_kill,
3852 .serialize = service_serialize,
3853 .deserialize_item = service_deserialize_item,
3855 .active_state = service_active_state,
3856 .sub_state_to_string = service_sub_state_to_string,
3858 .check_gc = service_check_gc,
3859 .check_snapshot = service_check_snapshot,
3861 .sigchld_event = service_sigchld_event,
3863 .reset_failed = service_reset_failed,
3865 .notify_cgroup_empty = service_notify_cgroup_empty_event,
3866 .notify_message = service_notify_message,
3868 .bus_name_owner_change = service_bus_name_owner_change,
3870 .bus_interface = "org.freedesktop.systemd1.Service",
3871 .bus_vtable = bus_service_vtable,
3872 .bus_set_property = bus_service_set_property,
3873 .bus_commit_properties = bus_service_commit_properties,
3875 .get_timeout = service_get_timeout,
3877 #ifdef HAVE_SYSV_COMPAT
3878 .enumerate = service_enumerate,
3881 .can_transient = true,
3883 .status_message_formats = {
3884 .starting_stopping = {
3885 [0] = "Starting %s...",
3886 [1] = "Stopping %s...",
3888 .finished_start_job = {
3889 [JOB_DONE] = "Started %s.",
3890 [JOB_FAILED] = "Failed to start %s.",
3891 [JOB_DEPENDENCY] = "Dependency failed for %s.",
3892 [JOB_TIMEOUT] = "Timed out starting %s.",
3894 .finished_stop_job = {
3895 [JOB_DONE] = "Stopped %s.",
3896 [JOB_FAILED] = "Stopped (with error) %s.",
3897 [JOB_TIMEOUT] = "Timed out stopping %s.",