From 1291b288a1f62c555b0b772fd5b8c6aad4b1132c Mon Sep 17 00:00:00 2001
From: Naphtali Sprei <nsprei@redhat.com>
Date: Thu, 15 Apr 2010 11:56:43 -0300
Subject: [PATCH 07/12] read-only: Make CDROM a read-only drive

RH-Author: Naphtali Sprei <nsprei@redhat.com>
Message-id: <1271332608-5243-7-git-send-email-nsprei@redhat.com>
Patchwork-id: 8654
O-Subject: [RHEL 5.6 kvm PATCH v4 06/11] read-only: Make CDROM a read-only drive
Bugzilla: 510630
RH-Acked-by: Christoph Hellwig <chellwig@redhat.com>
RH-Acked-by: Juan Quintela <quintela@redhat.com>
RH-Acked-by: Kevin Wolf <kwolf@redhat.com>

based on upstream commit: b196b1532f2981e9c811c96214a44ee9e7d12af3

Signed-off-by: Naphtali Sprei <nsprei@redhat.com>
---
 qemu/vl.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
 qemu/vl.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/qemu/vl.c b/qemu/vl.c
index e889c37..96a581a 100644
--- a/qemu/vl.c
+++ b/qemu/vl.c
@@ -2754,6 +2754,14 @@ int drive_init(struct drive_opt *arg, int snapshot,
             return -1;
         }
     }
+    /*
+     * cdrom is read-only. Set it now, after above interface checking
+     * since readonly attribute not explicitly required, so no error.
+     */
+    if (media == MEDIA_CDROM) {
+        ro = 1;
+    }
+
     if (!ro) {
         bdrv_flags |= BDRV_O_RDWR;
     }
-- 
1.7.0.3