static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata);
static void service_enter_signal(Service *s, ServiceState state, ServiceResult f);
+static void service_enter_reload_by_notify(Service *s);
static void service_init(Unit *u) {
Service *s = SERVICE(u);
if (UNIT(s)->load_state != UNIT_LOADED)
return 0;
- if (!s->exec_command[SERVICE_EXEC_START]) {
- log_error_unit(UNIT(s)->id, "%s lacks ExecStart setting. Refusing.", UNIT(s)->id);
+ if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP]) {
+ log_error_unit(UNIT(s)->id, "%s lacks both ExecStart= and ExecStop= setting. Refusing.", UNIT(s)->id);
return -EINVAL;
}
- if (s->type != SERVICE_ONESHOT &&
- s->exec_command[SERVICE_EXEC_START]->command_next) {
- 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);
+ if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) {
+ log_error_unit(UNIT(s)->id, "%s has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
+ return -EINVAL;
+ }
+
+ if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START]) {
+ log_error_unit(UNIT(s)->id, "%s has no ExecStart= setting, which is only allowed for RemainAfterExit=yes services. Refusing.", UNIT(s)->id);
+ return -EINVAL;
+ }
+
+ if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) {
+ 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);
return -EINVAL;
}
if (r < 0)
return r;
- if (s->type == _SERVICE_TYPE_INVALID)
- s->type = s->bus_name ? SERVICE_DBUS : SERVICE_SIMPLE;
+ if (s->type == _SERVICE_TYPE_INVALID) {
+ /* Figure out a type automatically */
+ if (s->bus_name)
+ s->type = SERVICE_DBUS;
+ else if (s->exec_command[SERVICE_EXEC_START])
+ s->type = SERVICE_SIMPLE;
+ else
+ s->type = SERVICE_ONESHOT;
+ }
/* Oneshot services have disabled start timeout by default */
if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined)
"%sGuessMainPID: %s\n"
"%sType: %s\n"
"%sRestart: %s\n"
- "%sNotifyAccess: %s\n",
+ "%sNotifyAccess: %s\n"
+ "%sNotifyState: %s\n",
prefix, service_state_to_string(s->state),
prefix, service_result_to_string(s->result),
prefix, service_result_to_string(s->reload_result),
prefix, yes_no(s->guess_main_pid),
prefix, service_type_to_string(s->type),
prefix, service_restart_to_string(s->restart),
- prefix, notify_access_to_string(s->notify_access));
+ prefix, notify_access_to_string(s->notify_access),
+ prefix, notify_state_to_string(s->notify_state));
if (s->control_pid > 0)
fprintf(f,
/* For remain_after_exit services, let's see if we can "release" the
* hold on the console, since unit_notify() only does that in case of
* change of state */
- if (state == SERVICE_EXITED && s->remain_after_exit &&
+ if (state == SERVICE_EXITED &&
+ s->remain_after_exit &&
UNIT(s)->manager->n_on_console > 0) {
- ExecContext *ec = unit_get_exec_context(UNIT(s));
+
+ ExecContext *ec;
+
+ ec = unit_get_exec_context(UNIT(s));
if (ec && exec_context_may_touch_console(ec)) {
Manager *m = UNIT(s)->manager;
static int service_spawn(
Service *s,
ExecCommand *c,
- bool timeout,
+ usec_t timeout,
bool pass_fds,
bool apply_permissions,
bool apply_chroot,
}
}
- if (timeout && s->timeout_start_usec > 0) {
- r = service_arm_timer(s, s->timeout_start_usec);
+ if (timeout > 0) {
+ r = service_arm_timer(s, timeout);
if (r < 0)
goto fail;
} else
r = service_spawn(s,
s->control_command,
- true,
+ s->timeout_stop_usec,
false,
!s->permissions_start_only,
!s->root_directory_start_only,
service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
}
+static void service_enter_stop_by_notify(Service *s) {
+ assert(s);
+
+ unit_watch_all_pids(UNIT(s));
+
+ if (s->timeout_stop_usec > 0)
+ service_arm_timer(s, s->timeout_stop_usec);
+
+ service_set_state(s, SERVICE_STOP);
+}
+
static void service_enter_stop(Service *s, ServiceResult f) {
int r;
r = service_spawn(s,
s->control_command,
- true,
+ s->timeout_stop_usec,
false,
!s->permissions_start_only,
!s->root_directory_start_only,
cgroup_ok = cgroup_good(s);
if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
- (s->bus_name_good || s->type != SERVICE_DBUS))
- service_set_state(s, SERVICE_RUNNING);
- else if (s->remain_after_exit)
+ (s->bus_name_good || s->type != SERVICE_DBUS)) {
+
+ /* If there are any queued up sd_notify()
+ * notifications, process them now */
+ if (s->notify_state == NOTIFY_RELOADING)
+ service_enter_reload_by_notify(s);
+ else if (s->notify_state == NOTIFY_STOPPING)
+ service_enter_stop_by_notify(s);
+ else
+ service_set_state(s, SERVICE_RUNNING);
+
+ } else if (s->remain_after_exit)
service_set_state(s, SERVICE_EXITED);
else
service_enter_stop(s, SERVICE_SUCCESS);
r = service_spawn(s,
s->control_command,
- true,
+ s->timeout_start_usec,
false,
!s->permissions_start_only,
!s->root_directory_start_only,
assert(s);
- assert(s->exec_command[SERVICE_EXEC_START]);
- assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
-
service_unwatch_control_pid(s);
service_unwatch_main_pid(s);
c = s->main_command = s->exec_command[SERVICE_EXEC_START];
}
+ if (!c) {
+ assert(s->type == SERVICE_ONESHOT);
+ service_enter_start_post(s);
+ return;
+ }
+
r = service_spawn(s,
c,
- s->type == SERVICE_FORKING || s->type == SERVICE_DBUS ||
- s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT,
+ IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_NOTIFY, SERVICE_ONESHOT) ? s->timeout_start_usec : 0,
true,
true,
true,
r = service_spawn(s,
s->control_command,
- true,
+ s->timeout_start_usec,
false,
!s->permissions_start_only,
!s->root_directory_start_only,
return;
fail:
- log_warning_unit(UNIT(s)->id,
- "%s failed to schedule restart job: %s",
- UNIT(s)->id, bus_error_message(&error, -r));
+ log_warning_unit(UNIT(s)->id, "%s failed to schedule restart job: %s", UNIT(s)->id, bus_error_message(&error, -r));
service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
}
+static void service_enter_reload_by_notify(Service *s) {
+ assert(s);
+
+ if (s->timeout_start_usec > 0)
+ service_arm_timer(s, s->timeout_start_usec);
+
+ service_set_state(s, SERVICE_RELOAD);
+}
+
static void service_enter_reload(Service *s) {
int r;
r = service_spawn(s,
s->control_command,
- true,
+ s->timeout_start_usec,
false,
!s->permissions_start_only,
!s->root_directory_start_only,
r = service_spawn(s,
s->control_command,
- true,
+ IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD) ? s->timeout_start_usec : s->timeout_stop_usec,
false,
!s->permissions_start_only,
!s->root_directory_start_only,
r = service_spawn(s,
s->main_command,
- true,
+ s->timeout_start_usec,
true,
true,
true,
s->status_text = NULL;
s->status_errno = 0;
+ s->notify_state = NOTIFY_UNKNOWN;
+
service_enter_start_pre(s);
return 0;
}
static void service_notify_message(Unit *u, pid_t pid, char **tags) {
Service *s = SERVICE(u);
- const char *e;
+ _cleanup_free_ char *cc = NULL;
bool notify_dbus = false;
+ const char *e;
assert(u);
- log_debug_unit(u->id, "%s: Got notification message from PID "PID_FMT" (%s...)",
- u->id, pid, tags && *tags ? tags[0] : "(empty)");
+ cc = strv_join(tags, ", ");
+ log_debug_unit(u->id, "%s: Got notification message from PID "PID_FMT" (%s)",
+ u->id, pid, isempty(cc) ? "n/a" : cc);
if (s->notify_access == NOTIFY_NONE) {
log_warning_unit(u->id, "%s: Got notification message from PID "PID_FMT", but reception is disabled.", u->id, pid);
}
/* Interpret MAINPID= */
- e = strv_find_prefix(tags, "MAINPID=");
+ e = strv_find_startswith(tags, "MAINPID=");
if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) {
- if (parse_pid(e + 8, &pid) < 0)
+ if (parse_pid(e, &pid) < 0)
log_warning_unit(u->id, "Failed to parse MAINPID= field in notification message: %s", e);
else {
- log_debug_unit(u->id, "%s: got %s", u->id, e);
+ log_debug_unit(u->id, "%s: got MAINPID=%s", u->id, e);
+
service_set_main_pid(s, pid);
unit_watch_pid(UNIT(s), pid);
notify_dbus = true;
}
}
+ /* Interpret RELOADING= */
+ if (strv_find(tags, "RELOADING=1")) {
+
+ log_debug_unit(u->id, "%s: got RELOADING=1", u->id);
+ s->notify_state = NOTIFY_RELOADING;
+
+ if (s->state == SERVICE_RUNNING)
+ service_enter_reload_by_notify(s);
+
+ notify_dbus = true;
+ }
+
/* Interpret READY= */
- if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START && strv_find(tags, "READY=1")) {
+ if (strv_find(tags, "READY=1")) {
+
log_debug_unit(u->id, "%s: got READY=1", u->id);
- service_enter_start_post(s);
+ s->notify_state = NOTIFY_READY;
+
+ /* Type=notify services inform us about completed
+ * initialization with READY=1 */
+ if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START)
+ service_enter_start_post(s);
+
+ /* Sending READY=1 while we are reloading informs us
+ * that the reloading is complete */
+ if (s->state == SERVICE_RELOAD && s->control_pid == 0)
+ service_enter_running(s, SERVICE_SUCCESS);
+
+ notify_dbus = true;
+ }
+
+ /* Interpret STOPPING= */
+ if (strv_find(tags, "STOPPING=1")) {
+
+ log_debug_unit(u->id, "%s: got STOPPING=1", u->id);
+ s->notify_state = NOTIFY_STOPPING;
+
+ if (s->state == SERVICE_RUNNING)
+ service_enter_stop_by_notify(s);
+
notify_dbus = true;
}
/* Interpret STATUS= */
- e = strv_find_prefix(tags, "STATUS=");
+ e = strv_find_startswith(tags, "STATUS=");
if (e) {
- char *t;
+ _cleanup_free_ char *t = NULL;
- if (e[7]) {
- if (!utf8_is_valid(e+7)) {
+ if (!isempty(e)) {
+ if (!utf8_is_valid(e))
log_warning_unit(u->id, "Status message in notification is not UTF-8 clean.");
- return;
- }
-
- log_debug_unit(u->id, "%s: got %s", u->id, e);
+ else {
+ log_debug_unit(u->id, "%s: got STATUS=%s", u->id, e);
- t = strdup(e+7);
- if (!t) {
- log_oom();
- return;
+ t = strdup(e);
+ if (!t)
+ log_oom();
}
-
- } else
- t = NULL;
+ }
if (!streq_ptr(s->status_text, t)) {
+
free(s->status_text);
s->status_text = t;
+ t = NULL;
+
notify_dbus = true;
- } else
- free(t);
+ }
}
/* Interpret ERRNO= */
- e = strv_find_prefix(tags, "ERRNO=");
+ e = strv_find_startswith(tags, "ERRNO=");
if (e) {
int status_errno;
- if (safe_atoi(e + 6, &status_errno) < 0 || status_errno < 0)
+ if (safe_atoi(e, &status_errno) < 0 || status_errno < 0)
log_warning_unit(u->id, "Failed to parse ERRNO= field in notification message: %s", e);
else {
- log_debug_unit(u->id, "%s: got %s", u->id, e);
+ log_debug_unit(u->id, "%s: got ERRNO=%s", u->id, e);
if (s->status_errno != status_errno) {
s->status_errno = status_errno;
DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
+static const char* const notify_state_table[_NOTIFY_STATE_MAX] = {
+ [NOTIFY_UNKNOWN] = "unknown",
+ [NOTIFY_READY] = "ready",
+ [NOTIFY_RELOADING] = "reloading",
+ [NOTIFY_STOPPING] = "stopping",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState);
+
static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
[SERVICE_SUCCESS] = "success",
[SERVICE_FAILURE_RESOURCES] = "resources",
~ianmdlvl / elogind.git / blobdiff