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_init(Unit *u) {
127 Service *s = SERVICE(u);
130 assert(u->load_state == UNIT_STUB);
132 s->timeout_start_usec = u->manager->default_timeout_start_usec;
133 s->timeout_stop_usec = u->manager->default_timeout_stop_usec;
134 s->restart_usec = u->manager->default_restart_usec;
135 s->type = _SERVICE_TYPE_INVALID;
137 #ifdef HAVE_SYSV_COMPAT
138 s->sysv_start_priority = -1;
139 s->sysv_start_priority_from_rcnd = -1;
142 s->guess_main_pid = true;
144 exec_context_init(&s->exec_context);
145 kill_context_init(&s->kill_context);
146 cgroup_context_init(&s->cgroup_context);
148 RATELIMIT_INIT(s->start_limit,
149 u->manager->default_start_limit_interval,
150 u->manager->default_start_limit_burst);
152 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
155 static void service_unwatch_control_pid(Service *s) {
158 if (s->control_pid <= 0)
161 unit_unwatch_pid(UNIT(s), s->control_pid);
165 static void service_unwatch_main_pid(Service *s) {
168 if (s->main_pid <= 0)
171 unit_unwatch_pid(UNIT(s), s->main_pid);
175 static void service_unwatch_pid_file(Service *s) {
176 if (!s->pid_file_pathspec)
179 log_debug_unit(UNIT(s)->id, "Stopping watch for %s's PID file %s",
180 UNIT(s)->id, s->pid_file_pathspec->path);
181 path_spec_unwatch(s->pid_file_pathspec);
182 path_spec_done(s->pid_file_pathspec);
183 free(s->pid_file_pathspec);
184 s->pid_file_pathspec = NULL;
187 static int service_set_main_pid(Service *s, pid_t pid) {
198 if (s->main_pid == pid && s->main_pid_known)
201 if (s->main_pid != pid) {
202 service_unwatch_main_pid(s);
203 exec_status_start(&s->main_exec_status, pid);
207 s->main_pid_known = true;
209 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) {
210 log_warning_unit(UNIT(s)->id,
211 "%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
212 UNIT(s)->id, (unsigned long) pid);
214 s->main_pid_alien = true;
216 s->main_pid_alien = false;
221 static void service_close_socket_fd(Service *s) {
224 if (s->socket_fd < 0)
227 close_nointr_nofail(s->socket_fd);
231 static void service_connection_unref(Service *s) {
234 if (!UNIT_ISSET(s->accept_socket))
237 socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
238 unit_ref_unset(&s->accept_socket);
241 static void service_stop_watchdog(Service *s) {
244 s->watchdog_event_source = sd_event_source_unref(s->watchdog_event_source);
245 s->watchdog_timestamp = (struct dual_timestamp) { 0, 0 };
248 static void service_enter_signal(Service *s, ServiceState state, ServiceResult f);
250 static void service_handle_watchdog(Service *s) {
256 if (s->watchdog_usec == 0)
259 nw = now(CLOCK_MONOTONIC);
260 if (nw >= s->watchdog_timestamp.monotonic + s->watchdog_usec) {
261 log_error_unit(UNIT(s)->id, "%s watchdog timeout!", UNIT(s)->id);
262 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_WATCHDOG);
266 if (s->watchdog_event_source) {
267 r = sd_event_source_set_time(s->watchdog_event_source, s->watchdog_timestamp.monotonic + s->watchdog_usec);
269 log_warning_unit(UNIT(s)->id, "%s failed to reset watchdog timer: %s", UNIT(s)->id, strerror(-r));
273 r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ON);
275 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);
278 log_warning_unit(UNIT(s)->id,
279 "%s failed to install watchdog timer: %s",
280 UNIT(s)->id, strerror(-r));
283 static void service_reset_watchdog(Service *s) {
286 dual_timestamp_get(&s->watchdog_timestamp);
287 service_handle_watchdog(s);
290 static void service_done(Unit *u) {
291 Service *s = SERVICE(u);
298 #ifdef HAVE_SYSV_COMPAT
299 free(s->sysv_runlevels);
300 s->sysv_runlevels = NULL;
303 free(s->status_text);
304 s->status_text = NULL;
306 cgroup_context_done(&s->cgroup_context);
307 exec_context_done(&s->exec_context, manager_is_reloading_or_reexecuting(u->manager));
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, path_get_file_name(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, path_get_file_name(path), &m);
846 log_error_unit(u->id,
847 "[%s:%u] Failed to translate LSB dependency %s, ignoring: %s",
848 path, line, n, strerror(-r));
858 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
861 log_error_unit(u->id, "[%s:%u] Failed to add dependency on %s, ignoring: %s",
862 path, line, m, strerror(-r));
866 } else if (startswith_no_case(t, "Default-Start:")) {
871 k = delete_chars(t+14, WHITESPACE "-");
874 if (!(d = strdup(k))) {
879 free(s->sysv_runlevels);
880 s->sysv_runlevels = d;
883 } else if (startswith_no_case(t, "Description:")) {
886 state = LSB_DESCRIPTION;
888 if ((j = strstrip(t+12)) && *j) {
889 if (!(d = strdup(j))) {
896 free(long_description);
897 long_description = d;
899 } else if (startswith_no_case(t, "Short-Description:")) {
904 if ((j = strstrip(t+18)) && *j) {
905 if (!(d = strdup(j))) {
912 free(short_description);
913 short_description = d;
915 } else if (state == LSB_DESCRIPTION) {
917 if (startswith(l, "#\t") || startswith(l, "# ")) {
920 if ((j = strstrip(t)) && *j) {
923 if (long_description)
924 d = strjoin(long_description, " ", t, NULL);
933 free(long_description);
934 long_description = d;
943 if ((r = sysv_exec_commands(s, supports_reload)) < 0)
946 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
947 /* If there a runlevels configured for this service
948 * but none of the standard ones, then we assume this
949 * is some special kind of service (which might be
950 * needed for early boot) and don't create any links
953 UNIT(s)->default_dependencies = false;
955 /* Don't timeout special services during boot (like fsck) */
956 s->timeout_start_usec = 0;
957 s->timeout_stop_usec = 0;
959 s->timeout_start_usec = DEFAULT_SYSV_TIMEOUT_USEC;
960 s->timeout_stop_usec = DEFAULT_SYSV_TIMEOUT_USEC;
963 /* Special setting for all SysV services */
964 s->type = SERVICE_FORKING;
965 s->remain_after_exit = !s->pid_file;
966 s->guess_main_pid = false;
967 s->restart = SERVICE_RESTART_NO;
968 s->exec_context.ignore_sigpipe = false;
969 s->kill_context.kill_mode = KILL_PROCESS;
971 /* We use the long description only if
972 * no short description is set. */
974 if (short_description)
975 description = short_description;
976 else if (chkconfig_description)
977 description = chkconfig_description;
978 else if (long_description)
979 description = long_description;
986 if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
994 /* The priority that has been set in /etc/rcN.d/ hierarchies
995 * takes precedence over what is stored as default in the LSB
997 if (s->sysv_start_priority_from_rcnd >= 0)
998 s->sysv_start_priority = s->sysv_start_priority_from_rcnd;
1000 u->load_state = UNIT_LOADED;
1008 free(short_description);
1009 free(long_description);
1010 free(chkconfig_description);
1015 static int service_load_sysv_name(Service *s, const char *name) {
1021 /* For SysV services we strip the *.sh suffixes. */
1022 if (endswith(name, ".sh.service"))
1025 STRV_FOREACH(p, UNIT(s)->manager->lookup_paths.sysvinit_path) {
1029 path = strjoin(*p, "/", name, NULL);
1033 assert(endswith(path, ".service"));
1034 path[strlen(path)-8] = 0;
1036 r = service_load_sysv_path(s, path);
1038 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
1039 /* Try *.sh source'able init scripts */
1040 strcat(path, ".sh");
1041 r = service_load_sysv_path(s, path);
1048 if (UNIT(s)->load_state != UNIT_STUB)
1055 static int service_load_sysv(Service *s) {
1062 /* Load service data from SysV init scripts, preferably with
1063 * LSB headers ... */
1065 if (strv_isempty(UNIT(s)->manager->lookup_paths.sysvinit_path))
1068 if ((t = UNIT(s)->id))
1069 if ((r = service_load_sysv_name(s, t)) < 0)
1072 if (UNIT(s)->load_state == UNIT_STUB)
1073 SET_FOREACH(t, UNIT(s)->names, i) {
1074 if (t == UNIT(s)->id)
1077 if ((r = service_load_sysv_name(s, t)) < 0)
1080 if (UNIT(s)->load_state != UNIT_STUB)
1088 static int service_verify(Service *s) {
1091 if (UNIT(s)->load_state != UNIT_LOADED)
1094 if (!s->exec_command[SERVICE_EXEC_START]) {
1095 log_error_unit(UNIT(s)->id,
1096 "%s lacks ExecStart setting. Refusing.", UNIT(s)->id);
1100 if (s->type != SERVICE_ONESHOT &&
1101 s->exec_command[SERVICE_EXEC_START]->command_next) {
1102 log_error_unit(UNIT(s)->id,
1103 "%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1107 if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) {
1108 log_error_unit(UNIT(s)->id,
1109 "%s has Restart setting other than no, which isn't allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1113 if (s->type == SERVICE_DBUS && !s->bus_name) {
1114 log_error_unit(UNIT(s)->id,
1115 "%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->id);
1119 if (s->bus_name && s->type != SERVICE_DBUS)
1120 log_warning_unit(UNIT(s)->id,
1121 "%s has a D-Bus service name specified, but is not of type dbus. Ignoring.", UNIT(s)->id);
1123 if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) {
1124 log_error_unit(UNIT(s)->id,
1125 "%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id);
1132 static int service_add_default_dependencies(Service *s) {
1137 /* Add a number of automatic dependencies useful for the
1138 * majority of services. */
1140 /* First, pull in base system */
1141 if (UNIT(s)->manager->running_as == SYSTEMD_SYSTEM) {
1142 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
1143 SPECIAL_BASIC_TARGET, NULL, true);
1147 } else if (UNIT(s)->manager->running_as == SYSTEMD_USER) {
1148 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
1149 SPECIAL_SOCKETS_TARGET, NULL, true);
1153 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
1154 SPECIAL_TIMERS_TARGET, NULL, true);
1158 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
1159 SPECIAL_PATHS_TARGET, NULL, true);
1164 /* Second, activate normal shutdown */
1165 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS,
1166 SPECIAL_SHUTDOWN_TARGET, NULL, true);
1170 static void service_fix_output(Service *s) {
1173 /* If nothing has been explicitly configured, patch default
1174 * output in. If input is socket/tty we avoid this however,
1175 * since in that case we want output to default to the same
1176 * place as we read input from. */
1178 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1179 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1180 s->exec_context.std_input == EXEC_INPUT_NULL)
1181 s->exec_context.std_error = UNIT(s)->manager->default_std_error;
1183 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1184 s->exec_context.std_input == EXEC_INPUT_NULL)
1185 s->exec_context.std_output = UNIT(s)->manager->default_std_output;
1188 static int service_load(Unit *u) {
1190 Service *s = SERVICE(u);
1194 /* Load a .service file */
1195 r = unit_load_fragment(u);
1199 #ifdef HAVE_SYSV_COMPAT
1200 /* Load a classic init script as a fallback, if we couldn't find anything */
1201 if (u->load_state == UNIT_STUB) {
1202 r = service_load_sysv(s);
1208 /* Still nothing found? Then let's give up */
1209 if (u->load_state == UNIT_STUB)
1212 /* This is a new unit? Then let's add in some extras */
1213 if (u->load_state == UNIT_LOADED) {
1215 /* We were able to load something, then let's add in
1216 * the dropin directories. */
1217 r = unit_load_dropin(u);
1221 if (s->type == _SERVICE_TYPE_INVALID)
1222 s->type = s->bus_name ? SERVICE_DBUS : SERVICE_SIMPLE;
1224 /* Oneshot services have disabled start timeout by default */
1225 if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined)
1226 s->timeout_start_usec = 0;
1228 service_fix_output(s);
1230 r = unit_add_exec_dependencies(u, &s->exec_context);
1234 r = unit_add_default_slice(u);
1238 #ifdef HAVE_SYSV_COMPAT
1239 r = sysv_fix_order(s);
1245 r = unit_watch_bus_name(u, s->bus_name);
1250 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1251 s->notify_access = NOTIFY_MAIN;
1253 if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE)
1254 s->notify_access = NOTIFY_MAIN;
1256 if (s->type == SERVICE_DBUS || s->bus_name) {
1257 r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES,
1258 SPECIAL_DBUS_SOCKET, NULL, true);
1263 if (UNIT(s)->default_dependencies) {
1264 r = service_add_default_dependencies(s);
1269 r = unit_exec_context_defaults(u, &s->exec_context);
1274 return service_verify(s);
1277 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1279 ServiceExecCommand c;
1280 Service *s = SERVICE(u);
1281 const char *prefix2;
1282 _cleanup_free_ char *p2 = NULL;
1286 p2 = strappend(prefix, "\t");
1287 prefix2 = p2 ? p2 : prefix;
1290 "%sService State: %s\n"
1292 "%sReload Result: %s\n"
1293 "%sPermissionsStartOnly: %s\n"
1294 "%sRootDirectoryStartOnly: %s\n"
1295 "%sRemainAfterExit: %s\n"
1296 "%sGuessMainPID: %s\n"
1299 "%sNotifyAccess: %s\n",
1300 prefix, service_state_to_string(s->state),
1301 prefix, service_result_to_string(s->result),
1302 prefix, service_result_to_string(s->reload_result),
1303 prefix, yes_no(s->permissions_start_only),
1304 prefix, yes_no(s->root_directory_start_only),
1305 prefix, yes_no(s->remain_after_exit),
1306 prefix, yes_no(s->guess_main_pid),
1307 prefix, service_type_to_string(s->type),
1308 prefix, service_restart_to_string(s->restart),
1309 prefix, notify_access_to_string(s->notify_access));
1311 if (s->control_pid > 0)
1313 "%sControl PID: %lu\n",
1314 prefix, (unsigned long) s->control_pid);
1316 if (s->main_pid > 0)
1319 "%sMain PID Known: %s\n"
1320 "%sMain PID Alien: %s\n",
1321 prefix, (unsigned long) s->main_pid,
1322 prefix, yes_no(s->main_pid_known),
1323 prefix, yes_no(s->main_pid_alien));
1328 prefix, s->pid_file);
1333 "%sBus Name Good: %s\n",
1334 prefix, s->bus_name,
1335 prefix, yes_no(s->bus_name_good));
1337 kill_context_dump(&s->kill_context, f, prefix);
1338 exec_context_dump(&s->exec_context, f, prefix);
1340 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1342 if (!s->exec_command[c])
1345 fprintf(f, "%s-> %s:\n",
1346 prefix, service_exec_command_to_string(c));
1348 exec_command_dump_list(s->exec_command[c], f, prefix2);
1351 #ifdef HAVE_SYSV_COMPAT
1354 "%sSysV Init Script has LSB Header: %s\n"
1355 "%sSysVEnabled: %s\n",
1356 prefix, yes_no(s->sysv_has_lsb),
1357 prefix, yes_no(s->sysv_enabled));
1359 if (s->sysv_start_priority >= 0)
1361 "%sSysVStartPriority: %i\n",
1362 prefix, s->sysv_start_priority);
1364 if (s->sysv_runlevels)
1365 fprintf(f, "%sSysVRunLevels: %s\n",
1366 prefix, s->sysv_runlevels);
1370 fprintf(f, "%sStatus Text: %s\n",
1371 prefix, s->status_text);
1374 static int service_load_pid_file(Service *s, bool may_warn) {
1375 _cleanup_free_ char *k = NULL;
1384 r = read_one_line_file(s->pid_file, &k);
1387 log_info_unit(UNIT(s)->id,
1388 "PID file %s not readable (yet?) after %s.",
1389 s->pid_file, service_state_to_string(s->state));
1393 r = parse_pid(k, &pid);
1396 log_info_unit(UNIT(s)->id,
1397 "Failed to read PID from file %s: %s",
1398 s->pid_file, strerror(-r));
1402 if (kill(pid, 0) < 0 && errno != EPERM) {
1404 log_info_unit(UNIT(s)->id,
1405 "PID %lu read from file %s does not exist.",
1406 (unsigned long) pid, s->pid_file);
1410 if (s->main_pid_known) {
1411 if (pid == s->main_pid)
1414 log_debug_unit(UNIT(s)->id,
1415 "Main PID changing: %lu -> %lu",
1416 (unsigned long) s->main_pid, (unsigned long) pid);
1417 service_unwatch_main_pid(s);
1418 s->main_pid_known = false;
1420 log_debug_unit(UNIT(s)->id,
1421 "Main PID loaded: %lu", (unsigned long) pid);
1423 r = service_set_main_pid(s, pid);
1427 r = unit_watch_pid(UNIT(s), pid);
1429 /* FIXME: we need to do something here */
1430 log_warning_unit(UNIT(s)->id,
1431 "Failed to watch PID %lu from service %s",
1432 (unsigned long) pid, UNIT(s)->id);
1439 static int service_search_main_pid(Service *s) {
1445 /* If we know it anyway, don't ever fallback to unreliable
1447 if (s->main_pid_known)
1450 if (!s->guess_main_pid)
1453 assert(s->main_pid <= 0);
1455 pid = unit_search_main_pid(UNIT(s));
1459 log_debug_unit(UNIT(s)->id,
1460 "Main PID guessed: %lu", (unsigned long) pid);
1461 r = service_set_main_pid(s, pid);
1465 r = unit_watch_pid(UNIT(s), pid);
1467 /* FIXME: we need to do something here */
1468 log_warning_unit(UNIT(s)->id,
1469 "Failed to watch PID %lu from service %s",
1470 (unsigned long) pid, UNIT(s)->id);
1476 static void service_set_state(Service *s, ServiceState state) {
1477 ServiceState old_state;
1478 const UnitActiveState *table;
1481 table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
1483 old_state = s->state;
1486 service_unwatch_pid_file(s);
1488 if (state != SERVICE_START_PRE &&
1489 state != SERVICE_START &&
1490 state != SERVICE_START_POST &&
1491 state != SERVICE_RELOAD &&
1492 state != SERVICE_STOP &&
1493 state != SERVICE_STOP_SIGTERM &&
1494 state != SERVICE_STOP_SIGKILL &&
1495 state != SERVICE_STOP_POST &&
1496 state != SERVICE_FINAL_SIGTERM &&
1497 state != SERVICE_FINAL_SIGKILL &&
1498 state != SERVICE_AUTO_RESTART)
1499 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1501 if (state != SERVICE_START &&
1502 state != SERVICE_START_POST &&
1503 state != SERVICE_RUNNING &&
1504 state != SERVICE_RELOAD &&
1505 state != SERVICE_STOP &&
1506 state != SERVICE_STOP_SIGTERM &&
1507 state != SERVICE_STOP_SIGKILL) {
1508 service_unwatch_main_pid(s);
1509 s->main_command = NULL;
1512 if (state != SERVICE_START_PRE &&
1513 state != SERVICE_START &&
1514 state != SERVICE_START_POST &&
1515 state != SERVICE_RELOAD &&
1516 state != SERVICE_STOP &&
1517 state != SERVICE_STOP_SIGTERM &&
1518 state != SERVICE_STOP_SIGKILL &&
1519 state != SERVICE_STOP_POST &&
1520 state != SERVICE_FINAL_SIGTERM &&
1521 state != SERVICE_FINAL_SIGKILL) {
1522 service_unwatch_control_pid(s);
1523 s->control_command = NULL;
1524 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1527 if (state != SERVICE_START_PRE &&
1528 state != SERVICE_START &&
1529 state != SERVICE_START_POST &&
1530 state != SERVICE_RUNNING &&
1531 state != SERVICE_RELOAD &&
1532 state != SERVICE_STOP &&
1533 state != SERVICE_STOP_SIGTERM &&
1534 state != SERVICE_STOP_SIGKILL &&
1535 state != SERVICE_STOP_POST &&
1536 state != SERVICE_FINAL_SIGTERM &&
1537 state != SERVICE_FINAL_SIGKILL &&
1538 !(state == SERVICE_DEAD && UNIT(s)->job)) {
1539 service_close_socket_fd(s);
1540 service_connection_unref(s);
1543 if (state == SERVICE_STOP || state == SERVICE_STOP_SIGTERM)
1544 service_stop_watchdog(s);
1546 /* For the inactive states unit_notify() will trim the cgroup,
1547 * but for exit we have to do that ourselves... */
1548 if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
1549 unit_destroy_cgroup(UNIT(s));
1551 /* For remain_after_exit services, let's see if we can "release" the
1552 * hold on the console, since unit_notify() only does that in case of
1553 * change of state */
1554 if (state == SERVICE_EXITED && s->remain_after_exit &&
1555 UNIT(s)->manager->n_on_console > 0) {
1556 ExecContext *ec = unit_get_exec_context(UNIT(s));
1557 if (ec && exec_context_may_touch_console(ec)) {
1558 Manager *m = UNIT(s)->manager;
1561 if (m->n_on_console == 0)
1562 /* unset no_console_output flag, since the console is free */
1563 m->no_console_output = false;
1567 if (old_state != state)
1568 log_debug_unit(UNIT(s)->id,
1569 "%s changed %s -> %s", UNIT(s)->id,
1570 service_state_to_string(old_state),
1571 service_state_to_string(state));
1573 unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS);
1574 s->reload_result = SERVICE_SUCCESS;
1577 static int service_coldplug(Unit *u) {
1578 Service *s = SERVICE(u);
1582 assert(s->state == SERVICE_DEAD);
1584 if (s->deserialized_state != s->state) {
1586 if (s->deserialized_state == SERVICE_START_PRE ||
1587 s->deserialized_state == SERVICE_START ||
1588 s->deserialized_state == SERVICE_START_POST ||
1589 s->deserialized_state == SERVICE_RELOAD ||
1590 s->deserialized_state == SERVICE_STOP ||
1591 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1592 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1593 s->deserialized_state == SERVICE_STOP_POST ||
1594 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1595 s->deserialized_state == SERVICE_FINAL_SIGKILL) {
1599 k = s->deserialized_state == SERVICE_START_PRE || s->deserialized_state == SERVICE_START ||
1600 s->deserialized_state == SERVICE_START_POST || s->deserialized_state == SERVICE_RELOAD ?
1601 s->timeout_start_usec : s->timeout_stop_usec;
1603 /* For the start/stop timeouts 0 means off */
1605 r = service_arm_timer(s, k);
1611 if (s->deserialized_state == SERVICE_AUTO_RESTART) {
1613 /* The restart timeouts 0 means immediately */
1614 r = service_arm_timer(s, s->restart_usec);
1619 if ((s->deserialized_state == SERVICE_START &&
1620 (s->type == SERVICE_FORKING ||
1621 s->type == SERVICE_DBUS ||
1622 s->type == SERVICE_ONESHOT ||
1623 s->type == SERVICE_NOTIFY)) ||
1624 s->deserialized_state == SERVICE_START_POST ||
1625 s->deserialized_state == SERVICE_RUNNING ||
1626 s->deserialized_state == SERVICE_RELOAD ||
1627 s->deserialized_state == SERVICE_STOP ||
1628 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1629 s->deserialized_state == SERVICE_STOP_SIGKILL)
1630 if (s->main_pid > 0) {
1631 r = unit_watch_pid(UNIT(s), s->main_pid);
1636 if (s->deserialized_state == SERVICE_START_PRE ||
1637 s->deserialized_state == SERVICE_START ||
1638 s->deserialized_state == SERVICE_START_POST ||
1639 s->deserialized_state == SERVICE_RELOAD ||
1640 s->deserialized_state == SERVICE_STOP ||
1641 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1642 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1643 s->deserialized_state == SERVICE_STOP_POST ||
1644 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1645 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1646 if (s->control_pid > 0) {
1647 r = unit_watch_pid(UNIT(s), s->control_pid);
1652 if (s->deserialized_state == SERVICE_START_POST ||
1653 s->deserialized_state == SERVICE_RUNNING)
1654 service_handle_watchdog(s);
1656 service_set_state(s, s->deserialized_state);
1662 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1666 unsigned rn_fds = 0;
1673 if (s->socket_fd >= 0)
1676 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
1681 if (u->type != UNIT_SOCKET)
1686 r = socket_collect_fds(sock, &cfds, &cn_fds);
1699 t = new(int, rn_fds+cn_fds);
1706 memcpy(t, rfds, rn_fds * sizeof(int));
1707 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1712 rn_fds = rn_fds+cn_fds;
1727 static int service_spawn(
1732 bool apply_permissions,
1734 bool apply_tty_stdin,
1735 bool set_notify_socket,
1742 _cleanup_free_ int *fdsbuf = NULL;
1743 unsigned n_fds = 0, n_env = 0;
1744 _cleanup_strv_free_ char
1745 **argv = NULL, **final_env = NULL, **our_env = NULL;
1752 unit_realize_cgroup(UNIT(s));
1755 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1756 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1757 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1759 if (s->socket_fd >= 0) {
1760 fds = &s->socket_fd;
1763 r = service_collect_fds(s, &fdsbuf, &n_fds);
1771 if (timeout && s->timeout_start_usec > 0) {
1772 r = service_arm_timer(s, s->timeout_start_usec);
1776 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1778 r = unit_full_printf_strv(UNIT(s), c->argv, &argv);
1782 our_env = new0(char*, 5);
1788 if (set_notify_socket)
1789 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
1794 if (s->main_pid > 0)
1795 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1800 if (s->watchdog_usec > 0)
1801 if (asprintf(our_env + n_env++, "WATCHDOG_USEC=%llu", (unsigned long long) s->watchdog_usec) < 0) {
1806 if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM)
1807 if (asprintf(our_env + n_env++, "MANAGERPID=%lu", (unsigned long) getpid()) < 0) {
1812 final_env = strv_env_merge(2, UNIT(s)->manager->environment, our_env, NULL);
1818 if (is_control && UNIT(s)->cgroup_path) {
1819 path = strappenda(UNIT(s)->cgroup_path, "/control");
1820 cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
1822 path = UNIT(s)->cgroup_path;
1832 UNIT(s)->manager->confirm_spawn,
1833 UNIT(s)->manager->cgroup_supported,
1836 s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL,
1841 r = unit_watch_pid(UNIT(s), pid);
1843 /* FIXME: we need to do something here */
1852 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
1857 static int main_pid_good(Service *s) {
1860 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1863 /* If we know the pid file, then lets just check if it is
1865 if (s->main_pid_known) {
1867 /* If it's an alien child let's check if it is still
1869 if (s->main_pid_alien && s->main_pid > 0)
1870 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1872 /* .. otherwise assume we'll get a SIGCHLD for it,
1873 * which we really should wait for to collect exit
1874 * status and code */
1875 return s->main_pid > 0;
1878 /* We don't know the pid */
1882 _pure_ static int control_pid_good(Service *s) {
1885 return s->control_pid > 0;
1888 static int cgroup_good(Service *s) {
1893 if (!UNIT(s)->cgroup_path)
1896 r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path, true);
1903 static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
1907 if (f != SERVICE_SUCCESS)
1910 service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
1912 if (allow_restart &&
1913 !s->forbid_restart &&
1914 (s->restart == SERVICE_RESTART_ALWAYS ||
1915 (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
1916 (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
1917 (s->restart == SERVICE_RESTART_ON_WATCHDOG && s->result == SERVICE_FAILURE_WATCHDOG) ||
1918 (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL ||
1919 s->result == SERVICE_FAILURE_CORE_DUMP))) &&
1920 (s->result != SERVICE_FAILURE_EXIT_CODE ||
1921 !set_contains(s->restart_ignore_status.code, INT_TO_PTR(s->main_exec_status.status))) &&
1922 (s->result != SERVICE_FAILURE_SIGNAL ||
1923 !set_contains(s->restart_ignore_status.signal, INT_TO_PTR(s->main_exec_status.status)))) {
1925 r = service_arm_timer(s, s->restart_usec);
1929 service_set_state(s, SERVICE_AUTO_RESTART);
1932 s->forbid_restart = false;
1934 /* we want fresh tmpdirs in case service is started again immediately */
1935 exec_context_tmp_dirs_done(&s->exec_context);
1937 /* Try to delete the pid file. At this point it will be
1938 * out-of-date, and some software might be confused by it, so
1939 * let's remove it. */
1941 unlink_noerrno(s->pid_file);
1946 log_warning_unit(UNIT(s)->id,
1947 "%s failed to run install restart timer: %s",
1948 UNIT(s)->id, strerror(-r));
1949 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
1952 static void service_enter_stop_post(Service *s, ServiceResult f) {
1956 if (f != SERVICE_SUCCESS)
1959 service_unwatch_control_pid(s);
1961 s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST];
1962 if (s->control_command) {
1963 s->control_command_id = SERVICE_EXEC_STOP_POST;
1965 r = service_spawn(s,
1969 !s->permissions_start_only,
1970 !s->root_directory_start_only,
1979 service_set_state(s, SERVICE_STOP_POST);
1981 service_enter_dead(s, SERVICE_SUCCESS, true);
1986 log_warning_unit(UNIT(s)->id,
1987 "%s failed to run 'stop-post' task: %s",
1988 UNIT(s)->id, strerror(-r));
1989 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
1992 static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
1997 if (f != SERVICE_SUCCESS)
2000 r = unit_kill_context(
2003 state != SERVICE_STOP_SIGTERM && state != SERVICE_FINAL_SIGTERM,
2011 if (s->timeout_stop_usec > 0) {
2012 r = service_arm_timer(s, s->timeout_stop_usec);
2017 service_set_state(s, state);
2018 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
2019 service_enter_stop_post(s, SERVICE_SUCCESS);
2021 service_enter_dead(s, SERVICE_SUCCESS, true);
2026 log_warning_unit(UNIT(s)->id,
2027 "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
2029 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
2030 service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
2032 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2035 static void service_enter_stop(Service *s, ServiceResult f) {
2040 if (f != SERVICE_SUCCESS)
2043 service_unwatch_control_pid(s);
2045 s->control_command = s->exec_command[SERVICE_EXEC_STOP];
2046 if (s->control_command) {
2047 s->control_command_id = SERVICE_EXEC_STOP;
2049 r = service_spawn(s,
2053 !s->permissions_start_only,
2054 !s->root_directory_start_only,
2062 service_set_state(s, SERVICE_STOP);
2064 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2069 log_warning_unit(UNIT(s)->id,
2070 "%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
2071 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2074 static void service_enter_running(Service *s, ServiceResult f) {
2075 int main_pid_ok, cgroup_ok;
2078 if (f != SERVICE_SUCCESS)
2081 main_pid_ok = main_pid_good(s);
2082 cgroup_ok = cgroup_good(s);
2084 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2085 (s->bus_name_good || s->type != SERVICE_DBUS))
2086 service_set_state(s, SERVICE_RUNNING);
2087 else if (s->remain_after_exit)
2088 service_set_state(s, SERVICE_EXITED);
2090 service_enter_stop(s, SERVICE_SUCCESS);
2093 static void service_enter_start_post(Service *s) {
2097 service_unwatch_control_pid(s);
2099 if (s->watchdog_usec > 0)
2100 service_reset_watchdog(s);
2102 s->control_command = s->exec_command[SERVICE_EXEC_START_POST];
2103 if (s->control_command) {
2104 s->control_command_id = SERVICE_EXEC_START_POST;
2106 r = service_spawn(s,
2110 !s->permissions_start_only,
2111 !s->root_directory_start_only,
2119 service_set_state(s, SERVICE_START_POST);
2121 service_enter_running(s, SERVICE_SUCCESS);
2126 log_warning_unit(UNIT(s)->id,
2127 "%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
2128 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2131 static void service_kill_control_processes(Service *s) {
2134 if (!UNIT(s)->cgroup_path)
2137 p = strappenda(UNIT(s)->cgroup_path, "/control");
2138 cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, p, SIGKILL, true, true, true, NULL);
2141 static void service_enter_start(Service *s) {
2148 assert(s->exec_command[SERVICE_EXEC_START]);
2149 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2151 service_unwatch_control_pid(s);
2152 service_unwatch_main_pid(s);
2154 /* We want to ensure that nobody leaks processes from
2155 * START_PRE here, so let's go on a killing spree, People
2156 * should not spawn long running processes from START_PRE. */
2157 service_kill_control_processes(s);
2159 if (s->type == SERVICE_FORKING) {
2160 s->control_command_id = SERVICE_EXEC_START;
2161 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2163 s->main_command = NULL;
2165 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2166 s->control_command = NULL;
2168 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2171 r = service_spawn(s,
2173 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS ||
2174 s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT,
2179 s->notify_access != NOTIFY_NONE,
2185 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) {
2186 /* For simple services we immediately start
2187 * the START_POST binaries. */
2189 service_set_main_pid(s, pid);
2190 service_enter_start_post(s);
2192 } else if (s->type == SERVICE_FORKING) {
2194 /* For forking services we wait until the start
2195 * process exited. */
2197 s->control_pid = pid;
2198 service_set_state(s, SERVICE_START);
2200 } else if (s->type == SERVICE_ONESHOT ||
2201 s->type == SERVICE_DBUS ||
2202 s->type == SERVICE_NOTIFY) {
2204 /* For oneshot services we wait until the start
2205 * process exited, too, but it is our main process. */
2207 /* For D-Bus services we know the main pid right away,
2208 * but wait for the bus name to appear on the
2209 * bus. Notify services are similar. */
2211 service_set_main_pid(s, pid);
2212 service_set_state(s, SERVICE_START);
2214 assert_not_reached("Unknown service type");
2219 log_warning_unit(UNIT(s)->id,
2220 "%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
2221 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2224 static void service_enter_start_pre(Service *s) {
2229 service_unwatch_control_pid(s);
2231 s->control_command = s->exec_command[SERVICE_EXEC_START_PRE];
2232 if (s->control_command) {
2233 /* Before we start anything, let's clear up what might
2234 * be left from previous runs. */
2235 service_kill_control_processes(s);
2237 s->control_command_id = SERVICE_EXEC_START_PRE;
2239 r = service_spawn(s,
2243 !s->permissions_start_only,
2244 !s->root_directory_start_only,
2252 service_set_state(s, SERVICE_START_PRE);
2254 service_enter_start(s);
2259 log_warning_unit(UNIT(s)->id,
2260 "%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
2261 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2264 static void service_enter_restart(Service *s) {
2265 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2270 if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) {
2271 /* Don't restart things if we are going down anyway */
2272 log_info_unit(UNIT(s)->id,
2273 "Stop job pending for unit, delaying automatic restart.");
2275 r = service_arm_timer(s, s->restart_usec);
2282 /* Any units that are bound to this service must also be
2283 * restarted. We use JOB_RESTART (instead of the more obvious
2284 * JOB_START) here so that those dependency jobs will be added
2286 r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL);
2290 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
2291 * it will be canceled as part of the service_stop() call that
2292 * is executed as part of JOB_RESTART. */
2294 log_debug_unit(UNIT(s)->id,
2295 "%s scheduled restart job.", UNIT(s)->id);
2299 log_warning_unit(UNIT(s)->id,
2300 "%s failed to schedule restart job: %s",
2301 UNIT(s)->id, bus_error_message(&error, -r));
2302 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
2305 static void service_enter_reload(Service *s) {
2310 service_unwatch_control_pid(s);
2312 s->control_command = s->exec_command[SERVICE_EXEC_RELOAD];
2313 if (s->control_command) {
2314 s->control_command_id = SERVICE_EXEC_RELOAD;
2316 r = service_spawn(s,
2320 !s->permissions_start_only,
2321 !s->root_directory_start_only,
2329 service_set_state(s, SERVICE_RELOAD);
2331 service_enter_running(s, SERVICE_SUCCESS);
2336 log_warning_unit(UNIT(s)->id,
2337 "%s failed to run 'reload' task: %s",
2338 UNIT(s)->id, strerror(-r));
2339 s->reload_result = SERVICE_FAILURE_RESOURCES;
2340 service_enter_running(s, SERVICE_SUCCESS);
2343 static void service_run_next_control(Service *s) {
2347 assert(s->control_command);
2348 assert(s->control_command->command_next);
2350 assert(s->control_command_id != SERVICE_EXEC_START);
2352 s->control_command = s->control_command->command_next;
2353 service_unwatch_control_pid(s);
2355 r = service_spawn(s,
2359 !s->permissions_start_only,
2360 !s->root_directory_start_only,
2361 s->control_command_id == SERVICE_EXEC_START_PRE ||
2362 s->control_command_id == SERVICE_EXEC_STOP_POST,
2372 log_warning_unit(UNIT(s)->id,
2373 "%s failed to run next control task: %s",
2374 UNIT(s)->id, strerror(-r));
2376 if (s->state == SERVICE_START_PRE)
2377 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2378 else if (s->state == SERVICE_STOP)
2379 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2380 else if (s->state == SERVICE_STOP_POST)
2381 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2382 else if (s->state == SERVICE_RELOAD) {
2383 s->reload_result = SERVICE_FAILURE_RESOURCES;
2384 service_enter_running(s, SERVICE_SUCCESS);
2386 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2389 static void service_run_next_main(Service *s) {
2394 assert(s->main_command);
2395 assert(s->main_command->command_next);
2396 assert(s->type == SERVICE_ONESHOT);
2398 s->main_command = s->main_command->command_next;
2399 service_unwatch_main_pid(s);
2401 r = service_spawn(s,
2408 s->notify_access != NOTIFY_NONE,
2414 service_set_main_pid(s, pid);
2419 log_warning_unit(UNIT(s)->id,
2420 "%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
2421 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2424 static int service_start_limit_test(Service *s) {
2427 if (ratelimit_test(&s->start_limit))
2430 switch (s->start_limit_action) {
2432 case SERVICE_START_LIMIT_NONE:
2433 log_warning_unit(UNIT(s)->id,
2434 "%s start request repeated too quickly, refusing to start.",
2438 case SERVICE_START_LIMIT_REBOOT: {
2439 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2442 log_warning_unit(UNIT(s)->id,
2443 "%s start request repeated too quickly, rebooting.", UNIT(s)->id);
2445 r = manager_add_job_by_name(UNIT(s)->manager, JOB_START,
2446 SPECIAL_REBOOT_TARGET, JOB_REPLACE,
2447 true, &error, NULL);
2449 log_error_unit(UNIT(s)->id,
2450 "Failed to reboot: %s.", bus_error_message(&error, r));
2455 case SERVICE_START_LIMIT_REBOOT_FORCE:
2456 log_warning_unit(UNIT(s)->id,
2457 "%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id);
2458 UNIT(s)->manager->exit_code = MANAGER_REBOOT;
2461 case SERVICE_START_LIMIT_REBOOT_IMMEDIATE:
2462 log_warning_unit(UNIT(s)->id,
2463 "%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id);
2465 reboot(RB_AUTOBOOT);
2469 log_error_unit(UNIT(s)->id,
2470 "start limit action=%i", s->start_limit_action);
2471 assert_not_reached("Unknown StartLimitAction.");
2477 static int service_start(Unit *u) {
2478 Service *s = SERVICE(u);
2483 /* We cannot fulfill this request right now, try again later
2485 if (s->state == SERVICE_STOP ||
2486 s->state == SERVICE_STOP_SIGTERM ||
2487 s->state == SERVICE_STOP_SIGKILL ||
2488 s->state == SERVICE_STOP_POST ||
2489 s->state == SERVICE_FINAL_SIGTERM ||
2490 s->state == SERVICE_FINAL_SIGKILL)
2493 /* Already on it! */
2494 if (s->state == SERVICE_START_PRE ||
2495 s->state == SERVICE_START ||
2496 s->state == SERVICE_START_POST)
2499 /* A service that will be restarted must be stopped first to
2500 * trigger BindsTo and/or OnFailure dependencies. If a user
2501 * does not want to wait for the holdoff time to elapse, the
2502 * service should be manually restarted, not started. We
2503 * simply return EAGAIN here, so that any start jobs stay
2504 * queued, and assume that the auto restart timer will
2505 * eventually trigger the restart. */
2506 if (s->state == SERVICE_AUTO_RESTART)
2509 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED);
2511 /* Make sure we don't enter a busy loop of some kind. */
2512 r = service_start_limit_test(s);
2514 service_enter_dead(s, SERVICE_FAILURE_START_LIMIT, false);
2518 s->result = SERVICE_SUCCESS;
2519 s->reload_result = SERVICE_SUCCESS;
2520 s->main_pid_known = false;
2521 s->main_pid_alien = false;
2522 s->forbid_restart = false;
2524 service_enter_start_pre(s);
2528 static int service_stop(Unit *u) {
2529 Service *s = SERVICE(u);
2533 /* Don't create restart jobs from here. */
2534 s->forbid_restart = true;
2537 if (s->state == SERVICE_STOP ||
2538 s->state == SERVICE_STOP_SIGTERM ||
2539 s->state == SERVICE_STOP_SIGKILL ||
2540 s->state == SERVICE_STOP_POST ||
2541 s->state == SERVICE_FINAL_SIGTERM ||
2542 s->state == SERVICE_FINAL_SIGKILL)
2545 /* A restart will be scheduled or is in progress. */
2546 if (s->state == SERVICE_AUTO_RESTART) {
2547 service_set_state(s, SERVICE_DEAD);
2551 /* If there's already something running we go directly into
2553 if (s->state == SERVICE_START_PRE ||
2554 s->state == SERVICE_START ||
2555 s->state == SERVICE_START_POST ||
2556 s->state == SERVICE_RELOAD) {
2557 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2561 assert(s->state == SERVICE_RUNNING ||
2562 s->state == SERVICE_EXITED);
2564 service_enter_stop(s, SERVICE_SUCCESS);
2568 static int service_reload(Unit *u) {
2569 Service *s = SERVICE(u);
2573 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2575 service_enter_reload(s);
2579 _pure_ static bool service_can_reload(Unit *u) {
2580 Service *s = SERVICE(u);
2584 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2587 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2588 Service *s = SERVICE(u);
2594 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2595 unit_serialize_item(u, f, "result", service_result_to_string(s->result));
2596 unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
2598 if (s->control_pid > 0)
2599 unit_serialize_item_format(u, f, "control-pid", "%lu",
2600 (unsigned long) s->control_pid);
2602 if (s->main_pid_known && s->main_pid > 0)
2603 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2605 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2608 unit_serialize_item(u, f, "status-text", s->status_text);
2610 /* FIXME: There's a minor uncleanliness here: if there are
2611 * multiple commands attached here, we will start from the
2612 * first one again */
2613 if (s->control_command_id >= 0)
2614 unit_serialize_item(u, f, "control-command",
2615 service_exec_command_to_string(s->control_command_id));
2617 if (s->socket_fd >= 0) {
2620 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2623 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2626 if (s->main_exec_status.pid > 0) {
2627 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu",
2628 (unsigned long) s->main_exec_status.pid);
2629 dual_timestamp_serialize(f, "main-exec-status-start",
2630 &s->main_exec_status.start_timestamp);
2631 dual_timestamp_serialize(f, "main-exec-status-exit",
2632 &s->main_exec_status.exit_timestamp);
2634 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2635 unit_serialize_item_format(u, f, "main-exec-status-code", "%i",
2636 s->main_exec_status.code);
2637 unit_serialize_item_format(u, f, "main-exec-status-status", "%i",
2638 s->main_exec_status.status);
2641 if (dual_timestamp_is_set(&s->watchdog_timestamp))
2642 dual_timestamp_serialize(f, "watchdog-timestamp",
2643 &s->watchdog_timestamp);
2645 if (s->exec_context.tmp_dir)
2646 unit_serialize_item(u, f, "tmp-dir", s->exec_context.tmp_dir);
2648 if (s->exec_context.var_tmp_dir)
2649 unit_serialize_item(u, f, "var-tmp-dir", s->exec_context.var_tmp_dir);
2651 if (s->forbid_restart)
2652 unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart));
2657 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2658 Service *s = SERVICE(u);
2665 if (streq(key, "state")) {
2668 state = service_state_from_string(value);
2670 log_debug_unit(u->id, "Failed to parse state value %s", value);
2672 s->deserialized_state = state;
2673 } else if (streq(key, "result")) {
2676 f = service_result_from_string(value);
2678 log_debug_unit(u->id, "Failed to parse result value %s", value);
2679 else if (f != SERVICE_SUCCESS)
2682 } else if (streq(key, "reload-result")) {
2685 f = service_result_from_string(value);
2687 log_debug_unit(u->id, "Failed to parse reload result value %s", value);
2688 else if (f != SERVICE_SUCCESS)
2689 s->reload_result = f;
2691 } else if (streq(key, "control-pid")) {
2694 if (parse_pid(value, &pid) < 0)
2695 log_debug_unit(u->id, "Failed to parse control-pid value %s", value);
2697 s->control_pid = pid;
2698 } else if (streq(key, "main-pid")) {
2701 if (parse_pid(value, &pid) < 0)
2702 log_debug_unit(u->id, "Failed to parse main-pid value %s", value);
2704 service_set_main_pid(s, pid);
2705 unit_watch_pid(UNIT(s), pid);
2707 } else if (streq(key, "main-pid-known")) {
2710 b = parse_boolean(value);
2712 log_debug_unit(u->id, "Failed to parse main-pid-known value %s", value);
2714 s->main_pid_known = b;
2715 } else if (streq(key, "status-text")) {
2722 free(s->status_text);
2726 } else if (streq(key, "control-command")) {
2727 ServiceExecCommand id;
2729 id = service_exec_command_from_string(value);
2731 log_debug_unit(u->id, "Failed to parse exec-command value %s", value);
2733 s->control_command_id = id;
2734 s->control_command = s->exec_command[id];
2736 } else if (streq(key, "socket-fd")) {
2739 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2740 log_debug_unit(u->id, "Failed to parse socket-fd value %s", value);
2743 if (s->socket_fd >= 0)
2744 close_nointr_nofail(s->socket_fd);
2745 s->socket_fd = fdset_remove(fds, fd);
2747 } else if (streq(key, "main-exec-status-pid")) {
2750 if (parse_pid(value, &pid) < 0)
2751 log_debug_unit(u->id, "Failed to parse main-exec-status-pid value %s", value);
2753 s->main_exec_status.pid = pid;
2754 } else if (streq(key, "main-exec-status-code")) {
2757 if (safe_atoi(value, &i) < 0)
2758 log_debug_unit(u->id, "Failed to parse main-exec-status-code value %s", value);
2760 s->main_exec_status.code = i;
2761 } else if (streq(key, "main-exec-status-status")) {
2764 if (safe_atoi(value, &i) < 0)
2765 log_debug_unit(u->id, "Failed to parse main-exec-status-status value %s", value);
2767 s->main_exec_status.status = i;
2768 } else if (streq(key, "main-exec-status-start"))
2769 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2770 else if (streq(key, "main-exec-status-exit"))
2771 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2772 else if (streq(key, "watchdog-timestamp"))
2773 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
2774 else if (streq(key, "tmp-dir")) {
2781 s->exec_context.tmp_dir = t;
2782 } else if (streq(key, "var-tmp-dir")) {
2789 s->exec_context.var_tmp_dir = t;
2790 } else if (streq(key, "forbid-restart")) {
2793 b = parse_boolean(value);
2795 log_debug_unit(u->id, "Failed to parse forbid-restart value %s", value);
2797 s->forbid_restart = b;
2799 log_debug_unit(u->id, "Unknown serialization key '%s'", key);
2804 _pure_ static UnitActiveState service_active_state(Unit *u) {
2805 const UnitActiveState *table;
2809 table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
2811 return table[SERVICE(u)->state];
2814 static const char *service_sub_state_to_string(Unit *u) {
2817 return service_state_to_string(SERVICE(u)->state);
2820 static bool service_check_gc(Unit *u) {
2821 Service *s = SERVICE(u);
2825 /* Never clean up services that still have a process around,
2826 * even if the service is formally dead. */
2827 if (cgroup_good(s) > 0 ||
2828 main_pid_good(s) > 0 ||
2829 control_pid_good(s) > 0)
2832 #ifdef HAVE_SYSV_COMPAT
2840 _pure_ static bool service_check_snapshot(Unit *u) {
2841 Service *s = SERVICE(u);
2845 return !s->got_socket_fd;
2848 static int service_retry_pid_file(Service *s) {
2851 assert(s->pid_file);
2852 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2854 r = service_load_pid_file(s, false);
2858 service_unwatch_pid_file(s);
2860 service_enter_running(s, SERVICE_SUCCESS);
2864 static int service_watch_pid_file(Service *s) {
2867 log_debug_unit(UNIT(s)->id,
2868 "Setting watch for %s's PID file %s",
2869 UNIT(s)->id, s->pid_file_pathspec->path);
2870 r = path_spec_watch(s->pid_file_pathspec, service_dispatch_io);
2874 /* the pidfile might have appeared just before we set the watch */
2875 log_debug_unit(UNIT(s)->id,
2876 "Trying to read %s's PID file %s in case it changed",
2877 UNIT(s)->id, s->pid_file_pathspec->path);
2878 service_retry_pid_file(s);
2882 log_error_unit(UNIT(s)->id,
2883 "Failed to set a watch for %s's PID file %s: %s",
2884 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
2885 service_unwatch_pid_file(s);
2889 static int service_demand_pid_file(Service *s) {
2892 assert(s->pid_file);
2893 assert(!s->pid_file_pathspec);
2895 ps = new0(PathSpec, 1);
2900 ps->path = strdup(s->pid_file);
2906 path_kill_slashes(ps->path);
2908 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2909 * keep their PID file open all the time. */
2910 ps->type = PATH_MODIFIED;
2911 ps->inotify_fd = -1;
2913 s->pid_file_pathspec = ps;
2915 return service_watch_pid_file(s);
2918 static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata) {
2919 Service *s = SERVICE(userdata);
2923 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2924 assert(s->pid_file_pathspec);
2925 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2927 log_debug_unit(UNIT(s)->id, "inotify event for %s", UNIT(s)->id);
2929 if (path_spec_fd_event(s->pid_file_pathspec, events) < 0)
2932 if (service_retry_pid_file(s) == 0)
2935 if (service_watch_pid_file(s) < 0)
2941 service_unwatch_pid_file(s);
2942 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2946 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2947 Service *s = SERVICE(u);
2953 if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) :
2954 is_clean_exit_lsb(code, status, &s->success_status))
2955 f = SERVICE_SUCCESS;
2956 else if (code == CLD_EXITED)
2957 f = SERVICE_FAILURE_EXIT_CODE;
2958 else if (code == CLD_KILLED)
2959 f = SERVICE_FAILURE_SIGNAL;
2960 else if (code == CLD_DUMPED)
2961 f = SERVICE_FAILURE_CORE_DUMP;
2963 assert_not_reached("Unknown code");
2965 if (s->main_pid == pid) {
2966 /* Forking services may occasionally move to a new PID.
2967 * As long as they update the PID file before exiting the old
2968 * PID, they're fine. */
2969 if (service_load_pid_file(s, false) == 0)
2973 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2975 if (s->main_command) {
2976 /* If this is not a forking service than the
2977 * main process got started and hence we copy
2978 * the exit status so that it is recorded both
2979 * as main and as control process exit
2982 s->main_command->exec_status = s->main_exec_status;
2984 if (s->main_command->ignore)
2985 f = SERVICE_SUCCESS;
2986 } else if (s->exec_command[SERVICE_EXEC_START]) {
2988 /* If this is a forked process, then we should
2989 * ignore the return value if this was
2990 * configured for the starter process */
2992 if (s->exec_command[SERVICE_EXEC_START]->ignore)
2993 f = SERVICE_SUCCESS;
2996 log_struct_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2998 "MESSAGE=%s: main process exited, code=%s, status=%i/%s",
2999 u->id, sigchld_code_to_string(code), status,
3000 strna(code == CLD_EXITED
3001 ? exit_status_to_string(status, EXIT_STATUS_FULL)
3002 : signal_to_string(status)),
3003 "EXIT_CODE=%s", sigchld_code_to_string(code),
3004 "EXIT_STATUS=%i", status,
3007 if (f != SERVICE_SUCCESS)
3010 if (s->main_command &&
3011 s->main_command->command_next &&
3012 f == SERVICE_SUCCESS) {
3014 /* There is another command to *
3015 * execute, so let's do that. */
3017 log_debug_unit(u->id,
3018 "%s running next main command for state %s",
3019 u->id, service_state_to_string(s->state));
3020 service_run_next_main(s);
3024 /* The service exited, so the service is officially
3026 s->main_command = NULL;
3030 case SERVICE_START_POST:
3031 case SERVICE_RELOAD:
3033 /* Need to wait until the operation is
3038 if (s->type == SERVICE_ONESHOT) {
3039 /* This was our main goal, so let's go on */
3040 if (f == SERVICE_SUCCESS)
3041 service_enter_start_post(s);
3043 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3049 case SERVICE_RUNNING:
3050 service_enter_running(s, f);
3053 case SERVICE_STOP_SIGTERM:
3054 case SERVICE_STOP_SIGKILL:
3056 if (!control_pid_good(s))
3057 service_enter_stop_post(s, f);
3059 /* If there is still a control process, wait for that first */
3063 assert_not_reached("Uh, main process died at wrong time.");
3067 } else if (s->control_pid == pid) {
3070 if (s->control_command) {
3071 exec_status_exit(&s->control_command->exec_status,
3072 &s->exec_context, pid, code, status);
3074 if (s->control_command->ignore)
3075 f = SERVICE_SUCCESS;
3078 log_full_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, u->id,
3079 "%s: control process exited, code=%s status=%i",
3080 u->id, sigchld_code_to_string(code), status);
3082 if (f != SERVICE_SUCCESS)
3085 /* Immediately get rid of the cgroup, so that the
3086 * kernel doesn't delay the cgroup empty messages for
3087 * the service cgroup any longer than necessary */
3088 service_kill_control_processes(s);
3090 if (s->control_command &&
3091 s->control_command->command_next &&
3092 f == SERVICE_SUCCESS) {
3094 /* There is another command to *
3095 * execute, so let's do that. */
3097 log_debug_unit(u->id,
3098 "%s running next control command for state %s",
3099 u->id, service_state_to_string(s->state));
3100 service_run_next_control(s);
3103 /* No further commands for this step, so let's
3104 * figure out what to do next */
3106 s->control_command = NULL;
3107 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
3109 log_debug_unit(u->id,
3110 "%s got final SIGCHLD for state %s",
3111 u->id, service_state_to_string(s->state));
3115 case SERVICE_START_PRE:
3116 if (f == SERVICE_SUCCESS)
3117 service_enter_start(s);
3119 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3123 if (s->type != SERVICE_FORKING)
3124 /* Maybe spurious event due to a reload that changed the type? */
3127 if (f != SERVICE_SUCCESS) {
3128 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3133 bool has_start_post;
3136 /* Let's try to load the pid file here if we can.
3137 * The PID file might actually be created by a START_POST
3138 * script. In that case don't worry if the loading fails. */
3140 has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
3141 r = service_load_pid_file(s, !has_start_post);
3142 if (!has_start_post && r < 0) {
3143 r = service_demand_pid_file(s);
3144 if (r < 0 || !cgroup_good(s))
3145 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3149 service_search_main_pid(s);
3151 service_enter_start_post(s);
3154 case SERVICE_START_POST:
3155 if (f != SERVICE_SUCCESS) {
3156 service_enter_stop(s, f);
3163 r = service_load_pid_file(s, true);
3165 r = service_demand_pid_file(s);
3166 if (r < 0 || !cgroup_good(s))
3167 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3171 service_search_main_pid(s);
3173 service_enter_running(s, SERVICE_SUCCESS);
3176 case SERVICE_RELOAD:
3177 if (f == SERVICE_SUCCESS) {
3178 service_load_pid_file(s, true);
3179 service_search_main_pid(s);
3182 s->reload_result = f;
3183 service_enter_running(s, SERVICE_SUCCESS);
3187 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
3190 case SERVICE_STOP_SIGTERM:
3191 case SERVICE_STOP_SIGKILL:
3192 if (main_pid_good(s) <= 0)
3193 service_enter_stop_post(s, f);
3195 /* If there is still a service
3196 * process around, wait until
3197 * that one quit, too */
3200 case SERVICE_STOP_POST:
3201 case SERVICE_FINAL_SIGTERM:
3202 case SERVICE_FINAL_SIGKILL:
3203 service_enter_dead(s, f, true);
3207 assert_not_reached("Uh, control process died at wrong time.");
3212 /* Notify clients about changed exit status */
3213 unit_add_to_dbus_queue(u);
3216 static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) {
3217 Service *s = SERVICE(userdata);
3220 assert(source == s->timer_event_source);
3224 case SERVICE_START_PRE:
3226 log_warning_unit(UNIT(s)->id,
3227 "%s operation timed out. Terminating.", UNIT(s)->id);
3228 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3231 case SERVICE_START_POST:
3232 log_warning_unit(UNIT(s)->id,
3233 "%s operation timed out. Stopping.", UNIT(s)->id);
3234 service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
3237 case SERVICE_RELOAD:
3238 log_warning_unit(UNIT(s)->id,
3239 "%s operation timed out. Stopping.", UNIT(s)->id);
3240 s->reload_result = SERVICE_FAILURE_TIMEOUT;
3241 service_enter_running(s, SERVICE_SUCCESS);
3245 log_warning_unit(UNIT(s)->id,
3246 "%s stopping timed out. Terminating.", UNIT(s)->id);
3247 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3250 case SERVICE_STOP_SIGTERM:
3251 if (s->kill_context.send_sigkill) {
3252 log_warning_unit(UNIT(s)->id,
3253 "%s stopping timed out. Killing.", UNIT(s)->id);
3254 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3256 log_warning_unit(UNIT(s)->id,
3257 "%s stopping timed out. Skipping SIGKILL.", UNIT(s)->id);
3258 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3263 case SERVICE_STOP_SIGKILL:
3264 /* Uh, we sent a SIGKILL and it is still not gone?
3265 * Must be something we cannot kill, so let's just be
3266 * weirded out and continue */
3268 log_warning_unit(UNIT(s)->id,
3269 "%s still around after SIGKILL. Ignoring.", UNIT(s)->id);
3270 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3273 case SERVICE_STOP_POST:
3274 log_warning_unit(UNIT(s)->id,
3275 "%s stopping timed out (2). Terminating.", UNIT(s)->id);
3276 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3279 case SERVICE_FINAL_SIGTERM:
3280 if (s->kill_context.send_sigkill) {
3281 log_warning_unit(UNIT(s)->id,
3282 "%s stopping timed out (2). Killing.", UNIT(s)->id);
3283 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3285 log_warning_unit(UNIT(s)->id,
3286 "%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.",
3288 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
3293 case SERVICE_FINAL_SIGKILL:
3294 log_warning_unit(UNIT(s)->id,
3295 "%s still around after SIGKILL (2). Entering failed mode.", UNIT(s)->id);
3296 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
3299 case SERVICE_AUTO_RESTART:
3300 log_info_unit(UNIT(s)->id,
3301 "%s holdoff time over, scheduling restart.", UNIT(s)->id);
3302 service_enter_restart(s);
3306 assert_not_reached("Timeout at wrong time.");
3312 static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) {
3313 Service *s = SERVICE(userdata);
3316 assert(source == s->watchdog_event_source);
3318 service_handle_watchdog(s);
3322 static void service_notify_cgroup_empty_event(Unit *u) {
3323 Service *s = SERVICE(u);
3327 log_debug_unit(u->id, "%s: cgroup is empty", u->id);
3331 /* Waiting for SIGCHLD is usually more interesting,
3332 * because it includes return codes/signals. Which is
3333 * why we ignore the cgroup events for most cases,
3334 * except when we don't know pid which to expect the
3338 case SERVICE_START_POST:
3339 /* If we were hoping for the daemon to write its PID file,
3340 * we can give up now. */
3341 if (s->pid_file_pathspec) {
3342 log_warning_unit(u->id,
3343 "%s never wrote its PID file. Failing.", UNIT(s)->id);
3344 service_unwatch_pid_file(s);
3345 if (s->state == SERVICE_START)
3346 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3348 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3352 case SERVICE_RUNNING:
3353 /* service_enter_running() will figure out what to do */
3354 service_enter_running(s, SERVICE_SUCCESS);
3357 case SERVICE_STOP_SIGTERM:
3358 case SERVICE_STOP_SIGKILL:
3360 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3361 service_enter_stop_post(s, SERVICE_SUCCESS);
3365 case SERVICE_FINAL_SIGTERM:
3366 case SERVICE_FINAL_SIGKILL:
3367 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3368 service_enter_dead(s, SERVICE_SUCCESS, true);
3377 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3378 Service *s = SERVICE(u);
3383 if (s->notify_access == NOTIFY_NONE) {
3384 log_warning_unit(u->id,
3385 "%s: Got notification message from PID %lu, but reception is disabled.",
3386 u->id, (unsigned long) pid);
3390 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3391 log_warning_unit(u->id,
3392 "%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
3393 u->id, (unsigned long) pid, (unsigned long) s->main_pid);
3397 log_debug_unit(u->id,
3398 "%s: Got message", u->id);
3400 /* Interpret MAINPID= */
3401 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3402 (s->state == SERVICE_START ||
3403 s->state == SERVICE_START_POST ||
3404 s->state == SERVICE_RUNNING ||
3405 s->state == SERVICE_RELOAD)) {
3407 if (parse_pid(e + 8, &pid) < 0)
3408 log_warning_unit(u->id,
3409 "Failed to parse notification message %s", e);
3411 log_debug_unit(u->id,
3412 "%s: got %s", u->id, e);
3413 service_set_main_pid(s, pid);
3414 unit_watch_pid(UNIT(s), pid);
3418 /* Interpret READY= */
3419 if (s->type == SERVICE_NOTIFY &&
3420 s->state == SERVICE_START &&
3421 strv_find(tags, "READY=1")) {
3422 log_debug_unit(u->id,
3423 "%s: got READY=1", u->id);
3425 service_enter_start_post(s);
3428 /* Interpret STATUS= */
3429 e = strv_find_prefix(tags, "STATUS=");
3435 if (!utf8_is_valid(e+7)) {
3436 log_warning_unit(u->id,
3437 "Status message in notification is not UTF-8 clean.");
3443 log_error_unit(u->id,
3444 "Failed to allocate string.");
3448 log_debug_unit(u->id,
3449 "%s: got %s", u->id, e);
3451 free(s->status_text);
3454 free(s->status_text);
3455 s->status_text = NULL;
3459 if (strv_find(tags, "WATCHDOG=1")) {
3460 log_debug_unit(u->id,
3461 "%s: got WATCHDOG=1", u->id);
3462 if (dual_timestamp_is_set(&s->watchdog_timestamp))
3463 service_reset_watchdog(s);
3466 /* Notify clients about changed status or main pid */
3467 unit_add_to_dbus_queue(u);
3470 #ifdef HAVE_SYSV_COMPAT
3472 static int service_enumerate(Manager *m) {
3475 _cleanup_closedir_ DIR *d = NULL;
3476 _cleanup_free_ char *path = NULL, *fpath = NULL, *name = NULL;
3477 Set *runlevel_services[ELEMENTSOF(rcnd_table)] = {};
3478 _cleanup_set_free_ Set *shutdown_services = NULL;
3485 if (m->running_as != SYSTEMD_SYSTEM)
3488 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3489 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3493 path = strjoin(*p, "/", rcnd_table[i].path, NULL);
3504 if (errno != ENOENT)
3505 log_warning("opendir(%s) failed: %s", path, strerror(errno));
3510 while ((de = readdir(d))) {
3513 if (ignore_file(de->d_name))
3516 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3519 if (strlen(de->d_name) < 4)
3522 a = undecchar(de->d_name[1]);
3523 b = undecchar(de->d_name[2]);
3529 fpath = strjoin(path, "/", de->d_name, NULL);
3535 if (access(fpath, X_OK) < 0) {
3537 if (errno != ENOENT)
3538 log_warning("access() failed on %s: %s", fpath, strerror(errno));
3544 name = sysv_translate_name(de->d_name + 3);
3550 r = manager_load_unit_prepare(m, name, NULL, NULL, &service);
3552 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3556 if (de->d_name[0] == 'S') {
3558 if (rcnd_table[i].type == RUNLEVEL_UP) {
3559 SERVICE(service)->sysv_start_priority_from_rcnd =
3560 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3562 SERVICE(service)->sysv_enabled = true;
3565 r = set_ensure_allocated(&runlevel_services[i],
3566 trivial_hash_func, trivial_compare_func);
3570 r = set_put(runlevel_services[i], service);
3574 } else if (de->d_name[0] == 'K' &&
3575 (rcnd_table[i].type == RUNLEVEL_DOWN)) {
3577 r = set_ensure_allocated(&shutdown_services,
3578 trivial_hash_func, trivial_compare_func);
3582 r = set_put(shutdown_services, service);
3589 /* Now we loaded all stubs and are aware of the lowest
3590 start-up priority for all services, not let's actually load
3591 the services, this will also tell us which services are
3592 actually native now */
3593 manager_dispatch_load_queue(m);
3595 /* If this is a native service, rely on native ways to pull in
3596 * a service, don't pull it in via sysv rcN.d links. */
3597 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3598 SET_FOREACH(service, runlevel_services[i], j) {
3599 service = unit_follow_merge(service);
3601 if (service->fragment_path)
3604 r = unit_add_two_dependencies_by_name_inverse(
3605 service, UNIT_AFTER, UNIT_WANTS,
3606 rcnd_table[i].target, NULL, true);
3611 /* We honour K links only for halt/reboot. For the normal
3612 * runlevels we assume the stop jobs will be implicitly added
3613 * by the core logic. Also, we don't really distinguish here
3614 * between the runlevels 0 and 6 and just add them to the
3615 * special shutdown target. */
3616 SET_FOREACH(service, shutdown_services, j) {
3617 service = unit_follow_merge(service);
3619 if (service->fragment_path)
3622 r = unit_add_two_dependencies_by_name(
3623 service, UNIT_BEFORE, UNIT_CONFLICTS,
3624 SPECIAL_SHUTDOWN_TARGET, NULL, true);
3633 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3634 set_free(runlevel_services[i]);
3640 static void service_bus_name_owner_change(
3643 const char *old_owner,
3644 const char *new_owner) {
3646 Service *s = SERVICE(u);
3652 assert(streq(s->bus_name, name));
3653 assert(old_owner || new_owner);
3655 if (old_owner && new_owner)
3656 log_debug_unit(u->id,
3657 "%s's D-Bus name %s changed owner from %s to %s",
3658 u->id, name, old_owner, new_owner);
3660 log_debug_unit(u->id,
3661 "%s's D-Bus name %s no longer registered by %s",
3662 u->id, name, old_owner);
3664 log_debug_unit(u->id,
3665 "%s's D-Bus name %s now registered by %s",
3666 u->id, name, new_owner);
3668 s->bus_name_good = !!new_owner;
3670 if (s->type == SERVICE_DBUS) {
3672 /* service_enter_running() will figure out what to
3674 if (s->state == SERVICE_RUNNING)
3675 service_enter_running(s, SERVICE_SUCCESS);
3676 else if (s->state == SERVICE_START && new_owner)
3677 service_enter_start_post(s);
3679 } else if (new_owner &&
3681 (s->state == SERVICE_START ||
3682 s->state == SERVICE_START_POST ||
3683 s->state == SERVICE_RUNNING ||
3684 s->state == SERVICE_RELOAD)) {
3688 /* Try to acquire PID from bus service */
3690 r = sd_bus_get_owner_pid(u->manager->api_bus, name, &pid);
3692 log_debug_unit(u->id, "%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
3694 service_set_main_pid(s, pid);
3695 unit_watch_pid(UNIT(s), pid);
3700 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3705 /* This is called by the socket code when instantiating a new
3706 * service for a stream socket and the socket needs to be
3709 if (UNIT(s)->load_state != UNIT_LOADED)
3712 if (s->socket_fd >= 0)
3715 if (s->state != SERVICE_DEAD)
3719 s->got_socket_fd = true;
3721 unit_ref_set(&s->accept_socket, UNIT(sock));
3723 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3726 static void service_reset_failed(Unit *u) {
3727 Service *s = SERVICE(u);
3731 if (s->state == SERVICE_FAILED)
3732 service_set_state(s, SERVICE_DEAD);
3734 s->result = SERVICE_SUCCESS;
3735 s->reload_result = SERVICE_SUCCESS;
3737 RATELIMIT_RESET(s->start_limit);
3740 static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) {
3741 Service *s = SERVICE(u);
3743 return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error);
3746 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3747 [SERVICE_DEAD] = "dead",
3748 [SERVICE_START_PRE] = "start-pre",
3749 [SERVICE_START] = "start",
3750 [SERVICE_START_POST] = "start-post",
3751 [SERVICE_RUNNING] = "running",
3752 [SERVICE_EXITED] = "exited",
3753 [SERVICE_RELOAD] = "reload",
3754 [SERVICE_STOP] = "stop",
3755 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3756 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3757 [SERVICE_STOP_POST] = "stop-post",
3758 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3759 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3760 [SERVICE_FAILED] = "failed",
3761 [SERVICE_AUTO_RESTART] = "auto-restart",
3764 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3766 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3767 [SERVICE_RESTART_NO] = "no",
3768 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3769 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3770 [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog",
3771 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3772 [SERVICE_RESTART_ALWAYS] = "always"
3775 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3777 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3778 [SERVICE_SIMPLE] = "simple",
3779 [SERVICE_FORKING] = "forking",
3780 [SERVICE_ONESHOT] = "oneshot",
3781 [SERVICE_DBUS] = "dbus",
3782 [SERVICE_NOTIFY] = "notify",
3783 [SERVICE_IDLE] = "idle"
3786 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3788 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3789 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3790 [SERVICE_EXEC_START] = "ExecStart",
3791 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3792 [SERVICE_EXEC_RELOAD] = "ExecReload",
3793 [SERVICE_EXEC_STOP] = "ExecStop",
3794 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3797 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3799 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3800 [NOTIFY_NONE] = "none",
3801 [NOTIFY_MAIN] = "main",
3802 [NOTIFY_ALL] = "all"
3805 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3807 static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
3808 [SERVICE_SUCCESS] = "success",
3809 [SERVICE_FAILURE_RESOURCES] = "resources",
3810 [SERVICE_FAILURE_TIMEOUT] = "timeout",
3811 [SERVICE_FAILURE_EXIT_CODE] = "exit-code",
3812 [SERVICE_FAILURE_SIGNAL] = "signal",
3813 [SERVICE_FAILURE_CORE_DUMP] = "core-dump",
3814 [SERVICE_FAILURE_WATCHDOG] = "watchdog",
3815 [SERVICE_FAILURE_START_LIMIT] = "start-limit"
3818 DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
3820 static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = {
3821 [SERVICE_START_LIMIT_NONE] = "none",
3822 [SERVICE_START_LIMIT_REBOOT] = "reboot",
3823 [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force",
3824 [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate"
3826 DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction);
3828 const UnitVTable service_vtable = {
3829 .object_size = sizeof(Service),
3830 .exec_context_offset = offsetof(Service, exec_context),
3831 .cgroup_context_offset = offsetof(Service, cgroup_context),
3832 .kill_context_offset = offsetof(Service, kill_context),
3838 .private_section = "Service",
3840 .init = service_init,
3841 .done = service_done,
3842 .load = service_load,
3844 .coldplug = service_coldplug,
3846 .dump = service_dump,
3848 .start = service_start,
3849 .stop = service_stop,
3850 .reload = service_reload,
3852 .can_reload = service_can_reload,
3854 .kill = service_kill,
3856 .serialize = service_serialize,
3857 .deserialize_item = service_deserialize_item,
3859 .active_state = service_active_state,
3860 .sub_state_to_string = service_sub_state_to_string,
3862 .check_gc = service_check_gc,
3863 .check_snapshot = service_check_snapshot,
3865 .sigchld_event = service_sigchld_event,
3867 .reset_failed = service_reset_failed,
3869 .notify_cgroup_empty = service_notify_cgroup_empty_event,
3870 .notify_message = service_notify_message,
3872 .bus_name_owner_change = service_bus_name_owner_change,
3874 .bus_interface = "org.freedesktop.systemd1.Service",
3875 .bus_vtable = bus_service_vtable,
3876 .bus_changing_properties = bus_service_changing_properties,
3877 .bus_set_property = bus_service_set_property,
3878 .bus_commit_properties = bus_service_commit_properties,
3880 #ifdef HAVE_SYSV_COMPAT
3881 .enumerate = service_enumerate,
3884 .can_transient = true,
3886 .status_message_formats = {
3887 .starting_stopping = {
3888 [0] = "Starting %s...",
3889 [1] = "Stopping %s...",
3891 .finished_start_job = {
3892 [JOB_DONE] = "Started %s.",
3893 [JOB_FAILED] = "Failed to start %s.",
3894 [JOB_DEPENDENCY] = "Dependency failed for %s.",
3895 [JOB_TIMEOUT] = "Timed out starting %s.",
3897 .finished_stop_job = {
3898 [JOB_DONE] = "Stopped %s.",
3899 [JOB_FAILED] = "Stopped (with error) %s.",
3900 [JOB_TIMEOUT] = "Timed out stopping %s.",