From: antirez <antirez@gmail.com>
Date: Thu, 22 Sep 2011 13:47:48 +0000 (+0200)
Subject: comment on top of the _rio structure modified for correctness as actually fwrite... 
X-Git-Url: https://git.saurik.com/redis.git/commitdiff_plain/4c0462972ecdef6fcd8155003028a41aafd70c27

comment on top of the _rio structure modified for correctness as actually fwrite/fread semantics is different in general, but was 0/1 in our old usage before rio.c as we always used 1 as number items, and the actual number of bytes to read as item length.
---

diff --git a/src/rio.h b/src/rio.h
index fe863cb5..65442381 100644
--- a/src/rio.h
+++ b/src/rio.h
@@ -5,8 +5,9 @@
 #include "sds.h"
 
 struct _rio {
-    /* Backend functions. Both read and write should return 0 for short reads
-     * or writes, identical to the return values of fread/fwrite. */
+    /* Backend functions.
+     * Since this functions do not tolerate short writes or reads the return
+     * value is simplified to: zero on error, non zero on complete success. */
     size_t (*read)(struct _rio *, void *buf, size_t len);
     size_t (*write)(struct _rio *, const void *buf, size_t len);
     off_t (*tell)(struct _rio *);