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#!/bin/sh
#set -e
Read_only ()
{
for _PARAMETER in ${_CMDLINE}
do
case "${_PARAMETER}" in
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*"
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
}
|
