From 23ea1ebe19bed27a82541f7e30474ecfe7d6d5a3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Tue, 1 Oct 2013 04:19:14 +0200
Subject: [PATCH] qvm-block: detect read-only devices

---
 udev/udev-block-add-change | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/udev/udev-block-add-change b/udev/udev-block-add-change
index 7b65a2d..b678eaf 100755
--- a/udev/udev-block-add-change
+++ b/udev/udev-block-add-change
@@ -29,6 +29,11 @@ if [ "$MAJOR" -eq 7 -a ! -d /sys/$DEVPATH/loop ]; then
     exit 0
 fi
 
+# Check if device is read-only
+if [ "`cat /sys/$DEVPATH/ro`" -eq 1 ]; then
+    MODE=r
+fi
+
 # Special case for CD
 if [ "$ID_TYPE" = "cd" ]; then
     if [ "$ID_CDROM_MEDIA" != "1" ]; then