Splitting out already reviewed read-only script.

1 files changed, 33 insertions, 0 deletions

diff --git a/scripts/boot/0120-read-only b/scripts/boot/0120-read-only
new file mode 100755
index 0000000..588d57b
--- /dev/null
+++ b/scripts/boot/0120-read-only
@@ -0,0 +1,33 @@
+#!/bin/sh
+
+#set -e
+
+Read_only ()
+{
+	# 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*"
+
+	for _DEVICE in ${_DEVICES}
+	do
+		if [ ! -b "${_DEVICE}" ]
+		then
+			continue
+		fi
+
+		echo -n "live-boot: Setting ${_DEVICE} read-only..." > /dev/console
+
+		blockdev --setro ${_DEVICE}
+		_RETURN="${?}"
+
+		case "${_RETURN}" in
+			0)
+				echo " done, use 'blockdev --setrw ${_DEVICE}' to set read-write." > /dev/console
+				;;
+
+			*)
+				echo " failed." > /dev/console
+				;;
+		esac
+	done
+}