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-rw-r--r--src/core/service.c105
-rw-r--r--src/core/service.h13
2 files changed, 105 insertions, 13 deletions
diff --git a/src/core/service.c b/src/core/service.c
index 262a40cc8b..3221938793 100644
--- a/src/core/service.c
+++ b/src/core/service.c
@@ -92,6 +92,7 @@ static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *us
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);
@@ -473,7 +474,8 @@ static void service_dump(Unit *u, FILE *f, const char *prefix) {
"%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),
@@ -483,7 +485,8 @@ static void service_dump(Unit *u, FILE *f, const char *prefix) {
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,
@@ -1176,6 +1179,17 @@ fail:
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;
@@ -1226,9 +1240,18 @@ static void service_enter_running(Service *s, ServiceResult f) {
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);
@@ -1433,12 +1456,19 @@ static void service_enter_restart(Service *s) {
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;
@@ -1667,6 +1697,8 @@ static int service_start(Unit *u) {
s->status_text = NULL;
s->status_errno = 0;
+ s->notify_state = NOTIFY_UNKNOWN;
+
service_enter_start_pre(s);
return 0;
}
@@ -2504,13 +2536,15 @@ static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void
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);
@@ -2539,10 +2573,46 @@ static void service_notify_message(Unit *u, pid_t pid, char **tags) {
}
}
+ /* 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;
}
@@ -2798,6 +2868,15 @@ static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
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",
diff --git a/src/core/service.h b/src/core/service.h
index 686cf4b0bd..0227321d99 100644
--- a/src/core/service.h
+++ b/src/core/service.h
@@ -91,6 +91,15 @@ typedef enum NotifyAccess {
_NOTIFY_ACCESS_INVALID = -1
} NotifyAccess;
+typedef enum NotifyState {
+ NOTIFY_UNKNOWN,
+ NOTIFY_READY,
+ NOTIFY_RELOADING,
+ NOTIFY_STOPPING,
+ _NOTIFY_STATE_MAX,
+ _NOTIFY_STATE_INVALID = -1
+} NotifyState;
+
typedef enum ServiceResult {
SERVICE_SUCCESS,
SERVICE_FAILURE_RESOURCES,
@@ -196,6 +205,7 @@ struct Service {
PathSpec *pid_file_pathspec;
NotifyAccess notify_access;
+ NotifyState notify_state;
};
extern const UnitVTable service_vtable;
@@ -219,6 +229,9 @@ ServiceExecCommand service_exec_command_from_string(const char *s) _pure_;
const char* notify_access_to_string(NotifyAccess i) _const_;
NotifyAccess notify_access_from_string(const char *s) _pure_;
+const char* notify_state_to_string(NotifyState i) _const_;
+NotifyState notify_state_from_string(const char *s) _pure_;
+
const char* service_result_to_string(ServiceResult i) _const_;
ServiceResult service_result_from_string(const char *s) _pure_;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-17 17:45:37 +0000