From: Christoph Hellwig <hch@lst.de>
Date: Mon, 25 May 2009 08:08:52 +0000 (+0200)
Subject: fix raw_pread_aligned return value
X-Git-Tag: 0.10.0-0sb10~1129
X-Git-Url: http://vcs.maemo.org/git/?p=qemu;a=commitdiff_plain;h=94c6d6d815c0295b101b45a101007fcf22c5171a

fix raw_pread_aligned return value

raw_pread_aligned currently returns the raw return value from
lseek/read, which is always -1 in case of an error.  But the
callers higher up the stack expect it to return the negated
errno just like raw_pwrite_aligned.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---

diff --git a/block/raw-posix.c b/block/raw-posix.c
index 86e3067..57da1df 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -249,7 +249,7 @@ static int raw_pread_aligned(BlockDriverState *bs, int64_t offset,
 
 label__raw_read__success:
 
-    return ret;
+    return  (ret < 0) ? -errno : ret;
 }
 
 /*