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: v0.10.6~31
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=5982abd9ca27b80e5d006982c427a5299e080fe9;p=thirdparty%2Fqemu.git

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 85ca7049467..af3d468750e 100644
--- a/block-raw-posix.c
+++ b/block-raw-posix.c
@@ -234,7 +234,7 @@ static int raw_pread_aligned(BlockDriverState *bs, int64_t offset,
 
 label__raw_read__success:
 
-    return ret;
+    return  (ret < 0) ? -errno : ret;
 }
 
 /*