Check if the path is writable before trying to mkdir().

diff --git a/includes/GlobalFunctions.php b/includes/GlobalFunctions.php
index 2605ad0..35d8f18 100644 (file)
--- a/includes/GlobalFunctions.php
+++ b/includes/GlobalFunctions.php
@@ -2008,6 +2008,9 @@ function wfMkdirParents( $dir, $mode = null ) {
        if ( is_null( $mode ) )
                $mode = $wgDirectoryMode;
 
+       if ( !is_writable( $dir ) ) {
+               return false;
+       }
        return mkdir( $dir, $mode, true );  // PHP5 <3
 }