libext2fs: swap in extent header macros

index ba980e4..f7c3832 100644
@@ -154,24 +154,31 @@ struct ext3_ext_path {
 	((struct ext3_extent_idx *) (((char *) (__hdr__)) +	\
 				     sizeof(struct ext3_extent_header)))
 #define EXT_HAS_FREE_INDEX(__path__) \
-	((__path__)->p_hdr->eh_entries < (__path__)->p_hdr->eh_max)
+	(ext2fs_le16_to_cpu((__path__)->p_hdr->eh_entries) <  \
+		ext2fs_le16_to_cpu((__path__)->p_hdr->eh_max))
 #define EXT_LAST_EXTENT(__hdr__) \
-	(EXT_FIRST_EXTENT((__hdr__)) + (__hdr__)->eh_entries - 1)
+	(EXT_FIRST_EXTENT((__hdr__)) + \
+		ext2fs_le16_to_cpu((__hdr__)->eh_entries) - 1)
 #define EXT_LAST_INDEX(__hdr__) \
-	(EXT_FIRST_INDEX((__hdr__)) + (__hdr__)->eh_entries - 1)
+	(EXT_FIRST_INDEX((__hdr__)) + \
+		ext2fs_le16_to_cpu((__hdr__)->eh_entries) - 1)
 #define EXT_MAX_EXTENT(__hdr__) \
-	(EXT_FIRST_EXTENT((__hdr__)) + (__hdr__)->eh_max - 1)
+	(EXT_FIRST_EXTENT((__hdr__)) + \
+		ext2fs_le16_to_cpu((__hdr__)->eh_max) - 1)
 #define EXT_MAX_INDEX(__hdr__) \
-	(EXT_FIRST_INDEX((__hdr__)) + (__hdr__)->eh_max - 1)
+	(EXT_FIRST_INDEX((__hdr__)) + \
+		ext2fs_le16_to_cpu((__hdr__)->eh_max) - 1)
 
 #define EXT_ROOT_HDR(tree) \
 	((struct ext3_extent_header *) (tree)->root)
 #define EXT_BLOCK_HDR(bh) \
 	((struct ext3_extent_header *) (bh)->b_data)
 #define EXT_DEPTH(_t_)	\
-	(((struct ext3_extent_header *)((_t_)->root))->eh_depth)
+	(ext2fs_le16_to_cpu(	\
+		((struct ext3_extent_header *)((_t_)->root))->eh_depth))
 #define EXT_GENERATION(_t_)	\
-	(((struct ext3_extent_header *)((_t_)->root))->eh_generation)
+	(ext2fs_le32_to_cpu(	\
+		((struct ext3_extent_header *)((_t_)->root))->eh_generation))
 
 
 #define EXT_ASSERT(__x__) if (!(__x__)) BUG();