Merge chunk from trunk.

1 files changed, 6 insertions, 0 deletions

diff --git a/include/my_sys.h b/include/my_sys.h
index 75347713a55..099310d9f4b 100644
--- a/include/my_sys.h
+++ b/include/my_sys.h
@@ -531,6 +531,12 @@ typedef int (*qsort2_cmp)(const void *, const void *, const void *);
 #define my_b_tell(info) ((info)->pos_in_file + \
 			 (uint) (*(info)->current_pos - (info)->request_pos))
 
+#define my_b_get_buffer_start(info) (info)->request_pos 
+#define my_b_get_bytes_in_buffer(info) (char*) (info)->read_end -   \
+  (char*) my_b_get_buffer_start(info)
+#define my_b_get_pos_in_file(info) (info)->pos_in_file
+
+
 /* tell write offset in the SEQ_APPEND cache */
 my_off_t my_b_append_tell(IO_CACHE* info);
 my_off_t my_b_safe_tell(IO_CACHE* info); /* picks the correct tell() */