diff --git a/fs/befs/datastream.h b/fs/befs/datastream.h
new file mode 100644
index 0000000..45e8a3c
--- /dev/null
+++ b/fs/befs/datastream.h
@@ -0,0 +1,19 @@
+/*
+ * datastream.h
+ *
+ */
+
+struct buffer_head *befs_read_datastream(struct super_block *sb,
+					 befs_data_stream * ds, befs_off_t pos,
+					 uint * off);
+
+int befs_fblock2brun(struct super_block *sb, befs_data_stream * data,
+		     befs_blocknr_t fblock, befs_block_run * run);
+
+size_t befs_read_lsymlink(struct super_block *sb, befs_data_stream * data,
+			  void *buff, befs_off_t len);
+
+befs_blocknr_t befs_count_blocks(struct super_block *sb, befs_data_stream * ds);
+
+extern const befs_inode_addr BAD_IADDR;
+