From c4217f645dfdfd405cd0c50af953515e1114436a Mon Sep 17 00:00:00 2001
From: Jeff Cody <jcody@redhat.com>
Date: Wed, 25 Sep 2013 12:08:50 -0400
Subject: block: qcow2 - used QEMU_PACKED for on-disk structures

QCowHeader and QCowExtension are structs that reside in the on-disk
image format, and are read and written directly via bdrv_pread()/write(),
and as such should be packed to avoid any unintentional struct padding.

Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 block/qcow2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'block/qcow2.c')

diff --git a/block/qcow2.c b/block/qcow2.c
index 318d95d972..4a9888cc7f 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -52,7 +52,7 @@
 typedef struct {
     uint32_t magic;
     uint32_t len;
-} QCowExtension;
+} QEMU_PACKED QCowExtension;
 
 #define  QCOW2_EXT_MAGIC_END 0
 #define  QCOW2_EXT_MAGIC_BACKING_FORMAT 0xE2792ACA
-- 
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