init

wp-admin/network/update.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Update/Install Plugin/Theme network administration panel.
+ *
+ * @package WordPress
+ * @subpackage Multisite
+ * @since 3.1.0
+ */
+
+if ( isset( $_GET['action'] ) && in_array( $_GET['action'], array( 'update-selected', 'activate-plugin', 'update-selected-themes' ), true ) ) {
+	define( 'IFRAME_REQUEST', true );
+}
+
+/** Load WordPress Administration Bootstrap */
+require_once __DIR__ . '/admin.php';
+
+require ABSPATH . 'wp-admin/update.php';