diff -Naur grub/grub-core/fs/udf.c grub-test/grub-core/fs/udf.c
--- grub/grub-core/fs/udf.c	2010-05-06 17:30:36.000000000 +0200
+++ grub-test/grub-core/fs/udf.c	2010-10-27 10:18:08.160000033 +0200
@@ -471,7 +471,7 @@
 		    void NESTED_FUNC_ATTR
 		    (*read_hook) (grub_disk_addr_t sector,
 				  unsigned offset, unsigned length),
-		    int pos, grub_size_t len, char *buf)
+		    grub_off_t pos, grub_size_t len, char *buf)
 {
   switch (U16 (node->fe.icbtag.flags) & GRUB_UDF_ICBTAG_FLAG_AD_MASK)
     {
@@ -704,7 +704,7 @@
 {
   grub_fshelp_node_t child;
   struct grub_udf_file_ident dirent;
-  grub_uint32_t offset = 0;
+  grub_off_t offset = 0;
 
   child = grub_malloc (sizeof (struct grub_fshelp_node));
   if (!child)