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-rw-r--r--include/my_sys.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/my_sys.h b/include/my_sys.h
index 4f7e75a836e..b18df822b40 100644
--- a/include/my_sys.h
+++ b/include/my_sys.h
@@ -530,6 +530,12 @@ 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() */