[FASTFAT]

Check PathName length before accessing it. This fixes ntdll_winetest file test BSOD. But the test crashes a bit farther.

svn path=/trunk/; revision=47981

diff --git a/reactos/drivers/filesystems/fastfat/create.c b/reactos/drivers/filesystems/fastfat/create.c
index d3898fd..a9d4b25 100644 (file)
--- a/reactos/drivers/filesystems/fastfat/create.c
+++ b/reactos/drivers/filesystems/fastfat/create.c
@@ -522,7 +522,7 @@ VfatCreateFile ( PDEVICE_OBJECT DeviceObject, PIRP Irp )
                        return(STATUS_OBJECT_NAME_INVALID);
                }
        }
-        if (FileObject->RelatedFileObject && PathNameU.Buffer[0] == L'\\')
+        if (FileObject->RelatedFileObject && PathNameU.Length > sizeof(WCHAR) && PathNameU.Buffer[0] == L'\\')
         {
             return(STATUS_OBJECT_NAME_INVALID);
         }