From cfdf516c4d79cff26d3917419487ac626b823a09 Mon Sep 17 00:00:00 2001
From: Markus Armbruster <armbru@redhat.com>
Date: Thu, 25 Feb 2010 11:23:52 +0100
Subject: [PATCH] scsi: Make device scsi-disk reject /dev/sg*

You're supposed to use scsi-generic for that.  Which rejects anything
but /dev/sg*.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---
 hw/scsi-disk.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
index 522f521..8f7ffc1 100644
--- a/hw/scsi-disk.c
+++ b/hw/scsi-disk.c
@@ -1031,6 +1031,11 @@ static int scsi_disk_initfn(SCSIDevice *dev)
     }
     s->bs = s->qdev.conf.dinfo->bdrv;
 
+    if (bdrv_is_sg(s->bs)) {
+        qemu_error("scsi-disk: unwanted /dev/sg*\n");
+        return -1;
+    }
+
     if (bdrv_get_type_hint(s->bs) == BDRV_TYPE_CDROM) {
         s->cluster_size = 4;
     } else {
-- 
2.7.4