X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=scripts%2Fboot%2F0120-read-only;h=c05c162a86fca17a3f2281ceba598d88abd63cda;hb=7b0335fb8d508c2703c8ee18fed52312a4bcba49;hp=588d57b569b76f678dd1e39cb34797426699e41d;hpb=19d21915752731725ec85eab1269e677186d573e;p=live-boot-grml.git

diff --git a/scripts/boot/0120-read-only b/scripts/boot/0120-read-only
index 588d57b..c05c162 100755
--- a/scripts/boot/0120-read-only
+++ b/scripts/boot/0120-read-only
@@ -4,11 +4,30 @@
 
 Read_only ()
 {
+	for _PARAMETER in ${_CMDLINE}
+	do
+		case "${_PARAMETER}" in
+			live-boot.read-only=*|read-only=*)
+				LIVE_READ_ONLY="true"
+				LIVE_READ_ONLY_DEVICES="${_PARAMETER#*read-only=}"
+				;;
+
+			live-boot.read-only|read-only)
+				LIVE_READ_ONLY="true"
+				;;
+		esac
+	done
+
+	if [ "${LIVE_READ_ONLY}" != "true" ]
+	then
+		return 0
+	fi
+
 	# Marking some block devices as read-only to ensure that nothing
 	# gets written as linux still writes to 'only' read-only mounted filesystems.
-	_DEVICES="/dev/sd* /dev/vd*"
+	LIVE_READ_ONLY_DEVICES="${LIVE_READ_ONLY_DEVICES:-/dev/sd* /dev/vd*}"
 
-	for _DEVICE in ${_DEVICES}
+	for _DEVICE in $(echo ${LIVE_READ_ONLY_DEVICES} | sed -e 's|,| |g')
 	do
 		if [ ! -b "${_DEVICE}" ]
 		then