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.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'block/qcow2.h')

diff --git a/block/qcow2.h b/block/qcow2.h
index c90e5d6c6e..455e38de64 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -86,7 +86,7 @@ typedef struct QCowHeader {
 
     uint32_t refcount_order;
     uint32_t header_length;
-} QCowHeader;
+} QEMU_PACKED QCowHeader;
 
 typedef struct QCowSnapshot {
     uint64_t l1_table_offset;
-- 
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