From bf011293faaa7f87e4de83185931e7411b794128 Mon Sep 17 00:00:00 2001
From: john cooper <john.cooper@redhat.com>
Date: Mon, 22 Jun 2009 14:26:51 -0400
Subject: Add serial number support for virtio_blk

[brought forward to current qemu-kvm.git]

This patch implements the missing qemu logic to
interpret a '-drive .. serial=XYZ ..' flag for
a virtio_blk device.

The serial number string is contained in a
skeletal IDENTIFY DEVICE data structure and
this structure is made available to the guest
virtio_blk driver via pci i/o region 0.

Signed-off-by: john cooper <john.cooper@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---
 sysemu.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'sysemu.h')

diff --git a/sysemu.h b/sysemu.h
index d77de09c1c..aa036bfd1f 100644
--- a/sysemu.h
+++ b/sysemu.h
@@ -154,6 +154,8 @@ typedef enum {
     BLOCK_ERR_STOP_ANY
 } BlockInterfaceErrorAction;
 
+#define BLOCK_SERIAL_STRLEN 20
+
 typedef struct DriveInfo {
     BlockDriverState *bdrv;
     const char *devaddr;
@@ -163,7 +165,7 @@ typedef struct DriveInfo {
     int used;
     int drive_opt_idx;
     BlockInterfaceErrorAction onerror;
-    char serial[21];
+    char serial[BLOCK_SERIAL_STRLEN + 1];
 } DriveInfo;
 
 #define MAX_IDE_DEVS	2
-- 
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