+static int write_plugin_option_add_message(struct discover_server *server,
+ struct client *client, const struct plugin_option *opt)
+{
+ struct pb_protocol_message *message;
+ int len;
+
+ len = pb_protocol_plugin_option_len(opt);
+
+ message = pb_protocol_create_message(client,
+ PB_PROTOCOL_ACTION_PLUGIN_OPTION_ADD, len);
+ if (!message)
+ return -1;
+
+ pb_protocol_serialise_plugin_option(opt, message->payload, len);
+
+ return client_write_message(server, client, message);
+}
+
+static int write_plugins_remove_message(struct discover_server *server,
+ struct client *client)
+{
+ struct pb_protocol_message *message;
+
+ message = pb_protocol_create_message(client,
+ PB_PROTOCOL_ACTION_PLUGINS_REMOVE, 0);
+ if (!message)
+ return -1;
+
+ /* No payload so nothing to serialise */
+
+ return client_write_message(server, client, message);
+}
+