core/dispatcher: add and use nm_dispatcher_call_hostname()

src/nm-dispatcher.c

@@ -693,6 +693,27 @@ done:
 	return success;
 }
 
+/**
+ * nm_dispatcher_call_hostname:
+ * @callback: a caller-supplied callback to execute when done
+ * @user_data: caller-supplied pointer passed to @callback
+ * @out_call_id: on success, a call identifier which can be passed to
+ * nm_dispatcher_call_cancel()
+ *
+ * This method always invokes the dispatcher action asynchronously.
+ *
+ * Returns: %TRUE if the action was dispatched, %FALSE on failure
+ */
+gboolean
+nm_dispatcher_call_hostname (NMDispatcherFunc callback,
+                             gpointer user_data,
+                             guint *out_call_id)
+{
+	return _dispatcher_call (NM_DISPATCHER_ACTION_HOSTNAME, FALSE, NULL, NULL, NULL,
+	                         NM_CONNECTIVITY_UNKNOWN, NULL, NULL, NULL, NULL,
+	                         callback, user_data, out_call_id);
+}
+
 /**
  * nm_dispatcher_call:
  * @action: the %NMDispatcherAction

src/nm-dispatcher.h

@@ -41,6 +41,10 @@ typedef enum {
 
 typedef void (*NMDispatcherFunc) (guint call_id, gpointer user_data);
 
+gboolean nm_dispatcher_call_hostname (NMDispatcherFunc callback,
+                                      gpointer user_data,
+                                      guint *out_call_id);
+
 gboolean nm_dispatcher_call (NMDispatcherAction action,
                              NMSettingsConnection *settings_connection,
                              NMConnection *applied_connection,

src/nm-policy.c

@@ -428,7 +428,7 @@ settings_set_hostname_cb (const char *hostname,
 	}
 
 	if (!ret)
-		nm_dispatcher_call (NM_DISPATCHER_ACTION_HOSTNAME, NULL, NULL, NULL, NULL, NULL, NULL);
+		nm_dispatcher_call_hostname (NULL, NULL, NULL);
 }
 
 static void

src/settings/nm-settings.c

@@ -2143,7 +2143,7 @@ hostnamed_properties_changed (GDBusProxy *proxy,
 		g_free (priv->hostname.value);
 		priv->hostname.value = g_strdup (hostname);
 		_notify (self, PROP_HOSTNAME);
-		nm_dispatcher_call (NM_DISPATCHER_ACTION_HOSTNAME, NULL, NULL, NULL, NULL, NULL, NULL);
+		nm_dispatcher_call_hostname (NULL, NULL, NULL);
 	}
 
 	g_variant_unref (v_hostname);