[Xen-changelog] [xen-unstable] blktap: Fix unaligned access to blktap/tapdisk message payloads.

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Date 1185955868 -3600
# Node ID ad9a79db3839a711fc21388d1a087179e1db2138
# Parent  425c3d6f755791941233092e75edd8da08f5073c
blktap: Fix unaligned access to blktap/tapdisk message payloads.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
---
 tools/blktap/lib/blktaplib.h |    4 +++-
 1 files changed, 3 insertions(+), 1 deletion(-)

diff -r 425c3d6f7557 -r ad9a79db3839 tools/blktap/lib/blktaplib.h
--- a/tools/blktap/lib/blktaplib.h      Wed Aug 01 09:04:20 2007 +0100
+++ b/tools/blktap/lib/blktaplib.h      Wed Aug 01 09:11:08 2007 +0100
@@ -169,12 +169,14 @@ typedef struct image {
        unsigned int info;
 } image_t;
 
+/* 16-byte message header, immediately followed by message payload. */
 typedef struct msg_hdr {
-       uint16_t    type;
+       uint16_t   type;
        uint16_t   len;
        uint16_t   drivertype;
        uint16_t   cookie;
        uint8_t    readonly;
+       uint8_t    pad[7];
 } msg_hdr_t;
 
 typedef struct msg_newdev {

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