path: root/defaults/initrd.scripts

#!/bin/ash

. /etc/initrd.defaults

call_func_timeout()
{
	local func=$1 timeout=$2 pid watcher
	[ $# -ne 2 ] && gen_die "call_func_timeout() called with $# arguments"

	( ${func} ) & pid=$!
	( sleep ${timeout} && kill -HUP ${pid} ) 2>/dev/null & watcher=$!
	if wait ${pid} 2>/dev/null; then
		kill -HUP $watcher 2> /dev/null
		wait $watcher 2>/dev/null
		return 0
	fi

	return 1
}

modules_load() {
	for module in $*
	do
		echo ${module} >> /etc/modules/extra_load
	done

	modules_scan extra_load
}

modules_scan() {
	local MODS
	local loaded

	MODS=$(cat /etc/modules/${1} 2>/dev/null)
	[ -n "${MODS}" ] && [ -z "${QUIET}" ] && \
		echo -ne "${BOLD}   ::${NORMAL} Loading from ${1}: "

	for x in ${MODS}
	do
		MLOAD=$(echo ${MLIST} | sed -e "s/.*${x}.*/${x}/")
		if [ "${MLOAD}" = "${x}" ] # Only module to no-load
		then
			[ -z "${QUIET}" ] && \
				echo -e "${BOLD}   ::${NORMAL} Skipping ${x}..."
		elif [ "${MLOAD}" = "${MLIST}" ]
		then
			if [ -n "${DEBUG}" ]; then
				echo -ne "${BOLD}   ::${NORMAL} "
				echo -ne "Scanning for ${x}..."
			fi
			modprobe ${x} > /dev/null 2>&1
			loaded=${?}

			[ -n "${DEBUG}" -a "${loaded}" = "0" ] && \
				echo "loaded"
			[ -n "${DEBUG}" -a "${loaded}" != "0" ] && \
				echo "not loaded"

			[ -z "${DEBUG}" -a "${loaded}" = "0" ] && \
				[ -z "${QUIET}" ] && \
				echo -en "${x} "
		else
			[ -z "${QUIET}" ] && \
				echo -e "${BOLD}   ::${NORMAL} Skipping ${x}..."
		fi
	done
	[ -n "${MODS}" ] && [ -z "${QUIET}" ] && echo
}

uppercase(){
	# needs tr on busybox
	echo $1 | tr 'a-z' 'A-Z'
}


findmediamount() {
	# $1 = mount dir name / media name
	# $2 = recognition file
	# $3 = variable to have the device path
	# $4 = actual mount dir path (full path)
	# args remaining are possible devices 

	local media=$1 recon=$2 vrbl=$3 mntdir=$4
	shift 4

	good_msg "Looking for the ${media}" ${CRYPT_SILENT}

	if [ "$#" -gt "0" ]
	then
		[ ! -d "${mntdir}" ] && mkdir -p ${mntdir} 2>/dev/null >/dev/null
		if [ -n "${ISOBOOT}" ]
		then
			mntcddir="${mntdir%${media}}iso"
			if [ ! -f ${mntcddir} ]
			then
				mkdir ${mntcddir}
			fi
		else
			mntcddir=${mntdir}
		fi

		for x in $*
		do
			# Check for a block device to mount
			if [ -b "${x}" ]
			then
				skip=0
				bsn=`basename "${x}"`
				#
				# If disk and it has at least one partition, skip.
				# We use /sys/block/${bsn}/${bsn}[0-9]* to make sure that we
				# don't skip device mapper devices. Even the craziest scenario
				# deserves a fair chance.
				#
				for part in `ls /sys/block/${bsn}/${bsn}*[0-9]* 2>/dev/null`
				do
					skip=1
					break;
				done
				if [ ${skip} -eq 1 ]
				then
					continue
				fi
				good_msg "Attempting to mount media: ${x}" ${CRYPT_SILENT}

				mount -r -t ${CDROOT_TYPE} ${x} ${mntcddir} >/dev/null 2>&1
				if [ "$?" = '0' ]
				then
					if [ -n "${ISOBOOT}" ]; then
						if [ -f ${mntcddir}/${ISOBOOT} ]; then
							mount -o loop ${mntcddir}/${ISOBOOT} ${mntdir}
							if [ "$?" = "0" ]; then
								good_msg "iso mounted on ${mntdir}"
							fi
						fi
					fi

					# Check for the media
					if [ -f "${mntdir}/${recon}" ]
					then
						#set REAL_ROOT, CRYPT_ROOT_KEYDEV or whatever ${vrbl} is
						eval ${vrbl}'='"${x}"
						good_msg "Media found on ${x}" ${CRYPT_SILENT}
						break
					else
						umount ${mntcddir}
					fi
				fi
			fi
		done
	fi

	eval local result='$'${vrbl}

	[ -n "${result}" ] || bad_msg "Media not found" ${CRYPT_SILENT}
}

devicelist(){
	# Locate the cdrom device with our media on it.
	# CDROM DEVICES
	local DEVICES="/dev/cdroms/* /dev/ide/cd/* /dev/sr*"
	# USB Keychain/Storage
	DEVICES="$DEVICES /dev/sd*"
	# IDE devices
	DEVICES="$DEVICES /dev/hd*"
	# virtio devices
	DEVICES="$DEVICES /dev/vd*"
	# USB using the USB Block Driver
	DEVICES="$DEVICES /dev/ubd* /dev/ubd/*"
	# iSeries devices
	DEVICES="$DEVICES /dev/iseries/vcd*"
	# builtin mmc/sd card reader devices
	DEVICES="$DEVICES /dev/mmcblk* /dev/mmcblk*/*"
	# fallback scanning, this might scan something twice, but it's better than
	# failing to boot.
	[ -e /proc/partitions ] && DEVICES="${DEVICES} $(awk '/([0-9]+[[:space:]]+)/{print "/dev/" $4}' /proc/partitions)"
	echo ${DEVICES}
}

bootstrapFS() {
        if [ 1 = "$aufs" ]; then
                # Directories used for rw aufs mount filesystem
                aufs_union=/union aufs_memory=/memory

                # Mountpoint for the aufs dev
                aufs_dev_mnt=/mnt/aufs-dev

                if [ -z "$aufs_dev_uid" ]; then
                        aufs_branch=$aufs_memory/aufs-branch/default
                else
                        aufs_branch=$aufs_memory/aufs-branch/$aufs_dev_uid
                fi

                mkdir -p $aufs_memory $aufs_union $aufs_dev_mnt
        else
                # Legacy SquashFS implementation
                good_msg "Making tmpfs for ${NEW_ROOT}"
                mount -n -t tmpfs tmpfs ${NEW_ROOT}
        fi

        # Setup the filesystem nodes and directories
        for i in ${CDROOT_PATH} /mnt/livecd /mnt/key /mnt/gentoo /tmp /tmp/.initrd /dev /proc /run /sys; do
                mkdir -p "${NEW_ROOT}${i}"
                chmod 755 "${NEW_ROOT}${i}"
        done

        [ ! -d "${CDROOT_PATH}" ] && mkdir -p "${CDROOT_PATH}"
        [ ! -e "${NEW_ROOT}/dev/null" ] && mknod -m 666 "${NEW_ROOT}"/dev/null c 1 3
        [ ! -e "${NEW_ROOT}/dev/zero" ] && mknod -m 666 "${NEW_ROOT}"/dev/zero c 1 5
        [ ! -e "${NEW_ROOT}/dev/console" ] && mknod -m 600 "${NEW_ROOT}"/dev/console c 5 1
        [ ! -e "${NEW_ROOT}/dev/ttyS0" ] && mknod -m 660 "${NEW_ROOT}"/dev/ttyS0 c 4 64

        # For SGI LiveCDs
        if [ "${LOOPTYPE}" = "sgimips" ]; then
                [ ! -e "${NEW_ROOT}/dev/sr0" ] && mknod "${NEW_ROOT}/dev/sr0" b 11 0
                [ ! -e "${NEW_ROOT}/dev/loop0" ] && mknod "${NEW_ROOT}/dev/loop0" b 7 0
        fi

        # Required for splash to work. Not an issue with the initrd as this
        # device isn't created there and is not needed.
        for minor in 0 1 ; do
                [ ! -e "${NEW_ROOT}/dev/$minor" ] && mknod -m 600 "${NEW_ROOT}/dev/tty$minor" c 4 $minor
        done
}

bootstrapCD() {
	local DEVICES=

	# The device was specified on the command line, so there's no need
	# to scan a bunch of extra devices
	[ -n "${CDROOT_DEV}" ] && DEVICES="${CDROOT_DEV}"
	[ -z "${CDROOT_DEV}" ] && DEVICES=$(devicelist)

	findmediamount "cdrom" "${SUBDIR}/${CDROOT_MARKER}" \
		"REAL_ROOT" "${CDROOT_PATH}" ${DEVICES}
}

bootstrapKey() {
	# $1 = ROOT/SWAP
	local KEYDEVS=`devicelist`
	eval local keyloc='"${CRYPT_'${1}'_KEY}"'

	findmediamount "key" "${keyloc}" "CRYPT_${1}_KEYDEV" "/mnt/key" ${KEYDEVS}
}

cache_cd_contents() {
	# Check loop file exists and cache to ramdisk if DO_cache is enabled
	if [ "${LOOPTYPE}" != "noloop" ] && [ "${LOOPTYPE}" != "sgimips" ]
	then
		check_loop
		if [ "${DO_cache}" ]
		then
			# TODO: Check the size of the image versus the size of our tmpfs
			# along with the amount of available RAM and increase tmpfs size
			# if necessary. (Not having awk sucks...)
			# z=0
			# for i in $(cat /proc/meminfo | grep -e ^MemFree -e ^Cached | \
			# cut -d: -f2 | cut -dk -f1 | sed -e "s/^\s*//") ; do
			# z=$(($z + $i)) ; done
			# echo $z
			good_msg "Copying loop file for caching..."
			# Verify that the needed directory exists
			mkdir -p "$(dirname ${NEW_ROOT}/mnt/${LOOP})"
			cp -a ${CDROOT_PATH}/${LOOP} ${NEW_ROOT}/mnt/${LOOP}
			if [ $? -ne 0 ]
			then
				warn_msg "Failed to cache the loop file! Lack of RAM?"
				rm -rf ${NEW_ROOT}/mnt/${LOOP} 2>/dev/null
				rm -rf ${NEW_ROOT}/mnt/livecd.* 2>/dev/null
				rm -rf ${NEW_ROOT}/mnt/image.* 2>/dev/null
				rm -rf ${NEW_ROOT}/mnt/zisofs 2>/dev/null
			fi
		fi
	fi
}

mount_sysfs() {
	mount -t sysfs sysfs /sys -o noexec,nosuid,nodev >/dev/null 2>&1
	ret=$?
	[ ${ret} -eq 0 ] || bad_msg "Failed to mount /sys!"
}

# Insert a directory tree $2 to an union specified by $1
# Top-level read-write branch is specified by it's index 0
# $1 = union absolute path (starting with /)
# $2 = path to data directory
#
union_insert_dir() {
	# Always mount it over the precedent (add:1:)
	if mount -n -o "remount,add:1:$2=rr" aufs "$1"; then
                good_msg "Addition of $2 to $1 successful"
	fi
}

# Insert all modules found in $1, usually $CDROOT_PATH
# added to allow users to add their own apps.
union_insert_modules() {
        local module

        for module in "$NEW_ROOT/$1/modules/"*.mo; do
                union_mod "$module" || bad_msg "Unable to load module: '$module'"
        done

        for module in "$NEW_ROOT/$1/modules/"*.lzm; do
                union_mod "$module" lzm || bad_msg "Unable to load module: '$module'"
        done
}

# Helper function for union_insert_modules()
union_mod() {
        [ -e "$1" ] || return 0

        local mod

        mod=${1##*/}
        mod=${mod%.*}

        mkdir -p "$aufs_memory/modules/$mod" || return

        if [ lzm = "$2" ]; then
                 mount -o loop,ro "$1" "$aufs_memory/modules/$mod"
        fi

        union_insert_dir "$aufs_union" "$aufs_memory/modules/$mod"
}

# Implements RC_NO_UMOUNTS variable into $CHROOT/etc/rc.conf for a cleaner shutdown process
# This should really go into /etc/init.d/localmounts but until then we manually set this here
conf_rc_no_umounts() {
        local conf nomount fnd
        conf=$CHROOT/etc/rc.conf fnd=0

        if nomount=$(grep -n '^[[:blank:]]*RC_NO_UMOUNTS=' $conf); then
                local i n data cmd IFS
                IFS='
'
                set -- $nomount
                unset IFS

                for i; do
                        n=${i%%:*}; i=${i#"$n"}
                        data=${i#*=}

                        case $data in
                                "\"$RC_NO_UMOUNTS\""|"'$RC_NO_UMOUNTS'") fnd=1;;
                                *) cmd="$cmd$n d;"
                        esac
                done

                if [ -n "$cmd" ]; then
                        sed -i "${cmd%;}" $conf
                        test_success "Unable to edit rc.conf"
                fi
        fi

        if [ 0 -eq "$fnd" ]; then
                printf 'RC_NO_UMOUNTS="%s"\n' "$RC_NO_UMOUNTS" >> $conf
                test_success "Unable to write to rc.conf"
        fi
}

# is_int "$A" ["$B"..]
# NOTE we consider a leading 0 false as it would be interpreted as octal
is_int(){
        local i
        for i; do
                case $i in
                        ''|*[!0-9]*|0?*) return 1 ;;
                        *) :
                esac
        done
}

# Function to create an ext2 fs on $aufs_dev, $aufs_dev_mnt mountpoint
create_changefs() {
	local size

	while :; do
		read -p '<< Size of file (Press Enter for default 256 Mb): ' size

                size=${size:-256}

                if ! is_int $size; then
                        bad_msg "Non numeric value given for size, try again"
                        continue
                elif [ 15 -ge "$size" ]; then
                        bad_msg "Please give a size of at least 16 Megabytes"
		else
			if dd if=/dev/zero "of=$aufs_dev_mnt$aufs_union_file" bs=1M count="$size" &>/dev/null; then
				good_msg "Creation of $aufs_union_file, ${size}Mb on $aufs_dev successful, formatting it ext2"
				mke2fs -F "$aufs_dev_mnt$aufs_union_file" &>/dev/null
				break
			else
				rm "$aufs_dev_mnt$aufs_union_file"
				bad_msg "Unable to create ${aufs_union_file#*/} on $aufs_dev of ${size}Mb"
				bad_msg "Ensure your disk is not full or read-only"

				read -p '<< Type "a" to abort, anything else to continue : ' doabort
				if [ a = "$doabort" ]; then
                                        bad_msg "Aborting creation of $aufs_union_file!"
                                        umount "$aufs_dev" && rmdir "$aufs_dev_mnt"
                                        return 1
                                fi
			fi
		fi
	done
	return $?
}

setup_aufs() {
	bootstrapCD

	if [ -n "$aufs_dev" ]; then
                good_msg "Mounting $aufs_dev to $aufs_memory for aufs support"

		if ! mount -t auto "$aufs_dev" "$aufs_dev_mnt" &>/dev/null; then
			bad_msg "Mount of $aufs_dev failed, falling back to ramdisk based aufs"
			unset aufs_dev
		fi

                # Check and attempt to create the AUFS union file
	        if [ ! -e $aufs_dev_mnt$aufs_union_file ] && [ -n "$aufs_dev" ]; then
		        create_changefs && mount -t auto "$aufs_dev_mnt$aufs_union_file" "$aufs_memory"
                elif [ -n "$aufs_dev" ]; then
                        while :; do
                                if mount -t auto "$aufs_dev_mnt$aufs_union_file" "$aufs_memory" &>/dev/null; then
                                        break
                                else
                                        bad_msg "Mounting of changes file failed, Running e2fsck"

                                        if ! hash e2fsck &>/dev/null; then
                                                bad_msg "/sbin/e2fsck not found! aborting filesystem check"
                                                bad_msg "Moving ${aufs_union_file#*/} to ${aufs_union_file#*/}.bad"

                                                mv "$aufs_dev_mnt$aufs_union_file" "$aufs_dev_mnt$aufs_union_file.bad"
                                                break
                                        fi

                                        if e2fsck "$aufs_dev_mnt$aufs_union_file" &>/dev/null; then
                                                good_msg "e2fsck ran successfully. Please verify data after bootup"
                                        else
                                                bad_msg "Your ${aufs_union_file#*/} image might be corrupted"
                                                bad_msg "moving ${aufs_union_file#*/} to ${aufs_union_file#*/}.bad"

                                                mv "$aufs_dev_mnt$aufs_union_file" "$aufs_dev_mnt$aufs_union_file.bad"
                                                break
                                        fi
                                fi
                        done
                fi

                # Mount tmpfs only in the case when aufs= boot parameter was
                # empty or we were not able to mount the storage device
	        if [ 1 = "$CDROOT" ] && [ ! -f "$aufs_dev_mnt$aufs_union_file" ]; then
                        aufs_xino=$aufs_memory
                        umount "$aufs_memory" &>/dev/null

                        bad_msg "Create an extfs ${aufs_union_file#*/} file on this device"
                        bad_msg "if you wish to have aufs data persistency on reboots"
                        bad_msg "Falling back to ramdisk based aufs"
                        good_msg "Mounting ramdisk to $aufs_memory for aufs support"

                        mount -t tmpfs tmpfs "$aufs_memory"
                else
                        aufs_xino=$aufs_memory/xino

                        mkdir -p "$aufs_xino"
                        mount -t tmpfs aufs-xino "$aufs_xino"
	        fi
        else
                aufs_xino=$aufs_memory

                good_msg "Mounting ramdisk to $aufs_memory for aufs support"
                mount -t tmpfs tmpfs "$aufs_memory"
        fi

	mkdir -p "$aufs_branch"
        if ! mount -t aufs -n -o "nowarn_perm,udba=none,xino=$aufs_xino/.aufs.xino,br:$aufs_branch=rw" aufs "$aufs_union"; then
		bad_msg "Can't setup union $aufs_union in directory!"
		aufs=0
	fi
}


findnfsmount() {
	if [ "${IP}" != '' ] || busybox udhcpc -n -T 15 -q
	then
		[ -e /rootpath ] && NFSROOT=`cat /rootpath`

		if [ "${NFSROOT}" = '' ]
		then
			# Obtain NFSIP	
			OPTIONS=`busybox dmesg | grep rootserver | sed -e "s/,/ /g"`
			for OPTION in $OPTIONS
			do
				if [ `echo $OPTION | sed -e "s/=/ /g" | cut -d " " -f 1` = 'rootserver' ]
				then
					NFSIP=`echo $OPTION | sed -e "s/=/ /g" | cut -d " " -f 2`
				fi 
			done
			
			# Obtain NFSPATH
			OPTIONS=`busybox dmesg | grep rootpath | sed -e "s/,/ /g"`	
			for OPTION in $OPTIONS
			do
				if [ `echo $OPTION | sed -e "s/=/ /g" | cut -d " " -f 1` = 'rootpath' ]
				then
					NFSPATH=`echo $OPTION | sed -e "s/=/ /g" | cut -d " " -f 2`
		 		fi
			done

			# Setup NFSROOT
			if [ "${NFSIP}" != '' ] && [ "$NFSPATH" != '' ]
			then
				NFSROOT="${NFSIP}:${NFSPATH}"
			else
				bad_msg "The DHCP Server did not send a valid root-path."
				bad_msg "Please check your DHCP setup, or provide a nfsroot=<...> parameter."
			fi
		fi

		if [ "${NFSROOT}" != '' ]
		then
			NFSOPTIONS=${NFSROOT#*,}
			NFSROOT=${NFSROOT%%,*}
			if [ "${NFSOPTIONS}" = "${NFSROOT}" ]
			then
				NFSOPTIONS=$DEFAULT_NFSOPTIONS
			else
				NFSOPTIONS="${DEFAULT_NFSOPTIONS},${NFSOPTIONS}"
			fi

			if [ "${CDROOT}" != '0' ]
			then
				good_msg "Attempting to mount NFS CD image on ${NFSROOT} with options ${NFSOPTIONS}"
				mount -t nfs -o ${NFSOPTIONS} ${NFSROOT} ${CDROOT_PATH}
				if [ "$?" = '0' ]
				then
					REAL_ROOT="/dev/nfs"
				else
					bad_msg "NFS Mounting failed. Is the path corrent ?"
				fi
			else	
				good_msg "Attempting to mount NFS root on ${NFSROOT} with options ${NFSOPTIONS}"
				mount -t nfs -o ${NFSOPTIONS} ${NFSROOT} ${NEW_ROOT}
				if [ "$?" = '0' ]
				then
					REAL_ROOT="/dev/nfs"
				else
					bad_msg "NFS Mounting failed. Is the path correct ?"
				fi
				# FIXME: Need to start portmap and the other rpc daemons in
				# order to remount rw.
			fi

		fi
	fi
}

find_real_device() {
	local DEVICE="${1}"
	case "${DEVICE}" in
		UUID\=*|LABEL\=*)
			local REAL_DEVICE=""
			local retval=1

			if [ "${retval}" -ne 0 ]; then
				REAL_DEVICE=`findfs "${DEVICE}" 2>/dev/null`
				retval=$?
			fi

			if [ "$retval" -ne 0 ]; then
				REAL_DEVICE=`busybox findfs "${DEVICE}" 2>/dev/null`
				retval=$?
			fi

			if [ "${retval}" -ne 0 ]; then
				REAL_DEVICE=`blkid -o device -l -t "${DEVICE}"`
				retval=$?
			fi

			if [ "${retval}" -eq 0 ] && [ -n "${REAL_DEVICE}" ]; then
				DEVICE="${REAL_DEVICE}"
			fi
		;;
	esac
	echo -n "${DEVICE}"
}

check_loop() {
	if [ "${LOOP}" = '' -o ! -e "${CDROOT_PATH}/${LOOP}" ]
	then
	
		bad_msg "Invalid loop location: ${LOOP}"
		bad_msg 'Please export LOOP with a valid location, or reboot and pass a proper loop=...'
		bad_msg 'kernel command line!'
	
		run_shell
	fi
}

run_shell() {
	/bin/ash
}

fs_type_in_use() {
	fs_type=$1
	cut -d ' ' -f 3 < /proc/mounts | fgrep -q "${fs_type}"
}

mount_devfs () {
	# Use devtmpfs if enabled in kernel,
	# else tmpfs. Always run mdev just in case
	devfs=tmpfs
	if grep -qs devtmpfs /proc/filesystems ; then
		devfs=devtmpfs
	fi

	# Options copied from /etc/init.d/udev-mount, should probably be kept in sync
	if ! fs_type_in_use devtmpfs; then
		mount -t $devfs -o "exec,nosuid,mode=0755,size=10M" udev /dev \
			|| bad_msg "Failed to mount /dev as ${devfs}"
	fi

	# http://git.busybox.net/busybox/plain/docs/mdev.txt
	if ! fs_type_in_use devpts; then
		mkdir -m 0755 /dev/pts
		mount -t devpts -o gid=5,mode=0620 devpts /dev/pts  || bad_msg "Failed to mount /dev/pts"
	fi
}

test_success() {
	retcode=$?
	# If last command failed send error message and fall back to a shell	
	if [ "$retcode" != '0' ]
	then
		error_string=$1
		error_string="${error_string:-run command}"
		bad_msg 'Failed to $1; failing back to the shell...'
		run_shell
	fi
}


# msg functions arguments
# $1 string
# $2 hide flag

good_msg() {
	[ -n "${QUIET}" ] && [ -z "${DEBUG}" ] && return 0

	msg_string=$1
	msg_string="${msg_string:-...}"
	[ "$2" != 1 ] && echo -e "${GOOD}>>${NORMAL}${BOLD} ${msg_string} ${NORMAL}"
}

bad_msg() {
	msg_string=$1
	msg_string="${msg_string:-...}"
	if [ "$2" != 1 ]
	then
		splash 'verbose' > /dev/null &
		echo -e "${BAD}!!${NORMAL}${BOLD} ${msg_string} ${NORMAL}"
	fi
} 

warn_msg() {
	msg_string=$1
	msg_string="${msg_string:-...}"
	[ "$2" != 1 ] && echo -e "${WARN}**${NORMAL}${BOLD} ${msg_string} ${NORMAL}"
}

crypt_filter() {
	if [ "${CRYPT_SILENT}" = '1' ]
	then
		eval $1 >/dev/null 2>/dev/null
	else
		splash 'verbose' > /dev/null &
		eval $1
		res=$?
		if [ ${res} -eq 0 ]
		then
			splash set_msg 'Disk unlocked.'
		fi
		return ${res}
	fi
}

prompt_user(){
	# $1 = variable whose value is the path (examples: "REAL_ROOT",
	#      "LUKS_KEYDEV")
	# $2 = label
	# $3 = optional explanations for failure

	eval local oldvalue='$'${1}

	if [ $# != 2 -a $# != 3 ]; then
		bad_msg "Bad invocation of function prompt_user."
		bad_msg "Please file a bug report with this message"
		exit 1
	fi
	[ -n "${3}" ] && local explnt=" or : ${3}" || local explnt="."

	bad_msg "Could not find the ${2} in ${oldvalue}${explnt}"
	bad_msg "Please specify another value or:"
	bad_msg "- press Enter for the same"
	bad_msg '- type "shell" for a shell'
	bad_msg '- type "q" to skip...'
	echo -n "${2}(${oldvalue}) :: "
	read ${1}
	case `eval echo '$'${1}` in
		'q')
			eval ${1}'='${oldvalue}
			warn_msg "Skipping step, this will likely cause a boot failure."
			break
			;;
		'shell')
			eval ${1}'='${oldvalue}
			warn_msg "To leave and try again just press <Ctrl>+D"
			run_shell
			;;
		'')
			eval ${1}'='${oldvalue}
			;;
	esac
}

cmdline_hwopts() {
	# Scan CMDLINE for any "doscsi" or "noscsi"-type arguments
	local FOUND
	local TMP_HWOPTS

	for x in $HWOPTS
	do
		for y in $CMDLINE
		do
			if [ "${y}" = "do${x}" ]
			then
				MY_HWOPTS="${MY_HWOPTS} $x"
			elif [ "${y}" = "no${x}" ]
			then
				MY_HWOPTS="`echo ${MY_HWOPTS} | sed -e \"s/${x}//g\" -`"
			fi
			if [ "$(echo ${y} | cut -b -7)" = "keymap=" ]
			then
				MY_HWOPTS="${MY_HWOPTS} keymap"
			fi
		done
	done
   
	# Shouldnt need to sort this as the following loop should figure out the
	# duplicates and strip them out
	#MY_HWOPTS=`echo ${MY_HWOPTS}|  sort`
	
	for x in ${MY_HWOPTS}
	do
		FOUND=0
		for y in ${TMP_HWOPTS}
		do
			if [ "${y}" = "${x}" ]
			then 
				continue 2
			fi
		done
		TMP_HWOPTS="${TMP_HWOPTS} ${x}"
		eval DO_`echo ${x} | sed 's/-//'`=1
	done

	MY_HWOPTS=${TMP_HWOPTS}
}

load_modules() {
	# Load modules listed in MY_HWOPTS if /lib/modules exists for the running
	# kernel version
	if [ -d "/lib/modules/${KV}" ]
	then
		good_msg 'Loading modules'
		# Load appropriate kernel modules
		for modules in $MY_HWOPTS
		do
			modules_scan $modules
		done
	else
		good_msg 'Skipping module load; no modules in the ramdisk!'
	fi
}

setup_keymap() {
	if [ "${DO_keymap}" ]
	then
		if [ ! -e /dev/vc/0 -a ! -e /dev/tty0 ]
		then
			DEVBIND=1
			mount -o bind ${NEW_ROOT}/dev /dev
		fi
		[ ! -e /dev/tty0 ] && ln -s /dev/tty1 /dev/tty0

		[ -f /lib/keymaps/keymapList ] && chooseKeymap

		[ "${DEVBIND}" = '1' ] && umount /dev
		
		if [ -e /etc/sysconfig/keyboard -a "${CDROOT}" = '1' ]
		then
			mkdir -p ${NEW_ROOT}/etc/sysconfig/
			cp /etc/sysconfig/keyboard ${NEW_ROOT}/etc/sysconfig/keyboard
		fi
	fi
}

chooseKeymap() {
	good_msg "Loading keymaps"
	if [ -z "${keymap}" ]
	then
		splash 'verbose' > /dev/null &
		cat /lib/keymaps/keymapList
		read -t 10 -p '<< Load keymap (Enter for default): ' keymap
		case ${keymap} in
			1|azerty) keymap=azerty ;;
			2|be) keymap=be ;;
			3|bg) keymap=bg ;;
			4|br-a) keymap=br-a ;;
			5|br-l) keymap=br-l ;;
			6|by) keymap=by ;;
			7|cf) keymap=cf ;;
			8|croat) keymap=croat ;;
			9|cz) keymap=cz ;;
			10|de) keymap=de ;;
			11|dk) keymap=dk ;;
			12|dvorak) keymap=dvorak ;;
			13|es) keymap=es ;;
			14|et) keymap=et ;;
			15|fi) keymap=fi ;;
			16|fr) keymap=fr ;;
			17|gr) keymap=gr ;;
			18|hu) keymap=hu ;;
			19|il) keymap=il ;;
			20|is) keymap=is ;;
			21|it) keymap=it ;;
			22|jp) keymap=jp ;;
			23|la) keymap=la ;;
			24|lt) keymap=lt ;;
			25|mk) keymap=mk ;;
			26|nl) keymap=nl ;;
			27|no) keymap=no ;;
			28|pl) keymap=pl ;;
			29|pt) keymap=pt ;;
			30|ro) keymap=ro ;;
			31|ru) keymap=ru ;;
			32|se) keymap=se ;;
			33|sg) keymap=sg ;;
			34|sk-y) keymap=sk-y ;;
			35|sk-z) keymap=sk-z ;;
			36|slovene) keymap=slovene ;;
			37|trf) keymap=trf ;;
			38|trq) keymap=trq ;;
			39|ua) keymap=ua ;;
			40|uk) keymap=uk ;;
			41|us) keymap=us ;;
			42|wangbe) keymap=wangbe ;;
			43|sf|ch*) keymap=sf ;;
		esac
	fi
	if [ -e /lib/keymaps/${keymap}.map ]
	then
		good_msg "Loading the ''${keymap}'' keymap"
		loadkmap < /lib/keymaps/${keymap}.map
#		xkeymap=${keymap}
#		echo ${keymap} | egrep -e "[0-9]+" >/dev/null 2>&1
#		if [ $? -eq 0 ]
#		then
#			xkeymap=`tail -n 8 /lib/keymaps/keymapList | grep ${keymap} | sed -r "s/.*\s+${keymap}\s+([a-z-]+).*/\1/g" | egrep -v 1`
#		fi
		mkdir -p /etc/sysconfig
#		echo "XKEYBOARD=${xkeymap}" > /etc/sysconfig/keyboard
		echo "XKEYBOARD=${keymap}" > /etc/sysconfig/keyboard
		splash set_msg "Set keymap to ${keymap}"
	elif [ -z "${keymap}" ]
	then
		good_msg
		good_msg "Keeping default keymap"
		splash set_msg "Keeping default keymap"
	else
		bad_msg "Sorry, but keymap ''${keymap}'' is invalid!"
		unset keymap
		chooseKeymap
	fi
}

# This helper function is to be called using call_func_timeout.
# It enables us to wait a reasonable amount of time until /dev/zfs appears.
waitForZFS() {
	while [ ! -c /dev/zfs ]; do echo >/dev/null; done;
	exit 1
}

startVolumes() {
	#good_msg 'Checking if volumes need to be started...'

	# Here, we check for /dev/device-mapper, and if it exists, we setup a
	# a symlink, which should hopefully fix bug #142775 and bug #147015
	if [ -e /dev/device-mapper ] && [ ! -e /dev/mapper/control ]
	then
		mkdir -p /dev/mapper
		ln -sf /dev/device-mapper /dev/mapper/control
	fi
	
	if [ "${USE_MDADM}" = '1' ]
	then
		if [ -e '/sbin/mdadm' ]
		then
			/sbin/mdadm --assemble --scan
		else
			bad_msg "mdadm not found: skipping mdadm raid assembly!"
		fi
	fi

	if [ "${USE_MULTIPATH_NORMAL}" = '1' ] 
	then 
		good_msg "Scanning for multipath devices" 
		/sbin/multipath -v 0
		sleep 2
		good_msg "Activating multipath devices" 
		/sbin/dmsetup ls --target multipath --exec "/sbin/kpartx -a -v" 
		#for MULTIPATH_VOLUMES in /dev/mapper/*; do kpartx -a $MULTIPATH_VOLUMES; done
	fi 

	if [ "${USE_DMRAID_NORMAL}" = '1' ]
	then
		if [ -e '/sbin/dmraid' ]
		then
			good_msg "Activating Device-Mapper RAID(s)"
			if [ '${DMRAID_OPTS}' = '' ]
			then
				/sbin/dmraid -ay
			else
				/sbin/dmraid -ay ${DMRAID_OPTS}
			fi
		fi
	fi

	if [ "${USE_LVM_NORMAL}" = '1' ]
	then
		if [ -e '/bin/lvm' ]
		then
			for dev in ${RAID_DEVICES}
			do
				setup_md_device "${dev}"
			done

			# This is needed for /bin/lvm to accept the following logic
			lvm_commands="#! /bin/lvm"

			# If there is a cahe, update it. Unbreak at least dmcrypt
			[ -d /etc/lvm/cache ] && lvm_commands="${lvm_commands} \nvgscan"

			# To activate volumegroups on all devices in the cache
			lvm_commands="${lvm_commands} \nvgchange -ay --sysinit"
			
			# To create symlinks so users can use real_root=/dev/vg/root
			# This needs to run after vgchange, using vgchange --mknodes is too
			# early.
			lvm_commands="${lvm_commands} \nvgmknodes --ignorelockingfailure"

			# And finally execute it all (/proc/... needed if lvm is compiled without readline)
			good_msg "Scanning for and activating Volume Groups"
			printf "%b\n" "${lvm_commands}" | /bin/lvm /proc/self/fd/0
		else
			bad_msg "vgscan or vgchange not found: skipping LVM volume group activation!"
		fi
	fi
	
	if [ "${USE_ZFS}" = '1' ]
	then

		# Avoid race involving asynchronous module loading
		if call_func_timeout waitForZFS 5
		then
			bad_msg "Cannot import ZFS pool because /dev/zfs is missing"
		elif [ -z "${ZFS_POOL}" ]
		then
			good_msg "Importing ZFS pools"

			/sbin/zpool import -N -a ${ZPOOL_FORCE}

			if [ "$?" = '0' ]
			then
				good_msg "Importing ZFS pools succeeded"
			else
				bad_msg "Imported ZFS pools failed"
			fi
		else

			if [ "$(zpool list -H -o name ${ZFS_POOL} 2>&1)" = "$ZFS_POOL" ]
			then
				good_msg "ZFS pool ${ZFS_POOL} already imported."

				if [ -n "${CRYPT_ROOT}" -o -n "${CRYPT_SWAP}" ]
				then
					good_msg "LUKS detected. Reimporting ${ZFS_POOL}"
					/sbin/zpool export -f "${ZFS_POOL}"
					/sbin/zpool import -N ${ZPOOL_FORCE} "${ZFS_POOL}"
				fi
			else
				good_msg "Importing ZFS pool ${ZFS_POOL}"

				/sbin/zpool import -N ${ZPOOL_FORCE} "${ZFS_POOL}"

				if [ "$?" = '0' ]
				then
					good_msg "Import of ${ZFS_POOL} succeeded"
				else
					bad_msg "Import of ${ZFS_POOL} failed"
				fi
			fi
		fi
	fi
}

startiscsi() {
	
	if [ ! -n "${ISCSI_NOIBFT}" ]
	then
		good_msg "Activating iSCSI via iBFT"
		iscsistart -b
	fi

	if [ -n "${ISCSI_INITIATORNAME}" ] && [ -n "${ISCSI_TARGET}" ] && [ -n "${ISCSI_ADDRESS}" ]
	then
		good_msg "Activating iSCSI via cmdline"

		if [ "${ISCSI_TGPT}" ]
		then
			ADDITIONAL="${ADDITIONAL} -g ${ISCSI_TGPT}"
		else
			ADDITIONAL="${ADDITIONAL} -g 1"
		fi
		
		if [ "${ISCSI_PORT}" ]
		then
			ADDITIONAL="${ADDITIONAL} -p ${ISCSI_PORT}"
		fi

		if [ "${ISCSI_USERNAME}" ]
		then
			ADDITIONAL="${ADDITIONAL} -u ${ISCSI_USERNAME}"
		fi

		if [ "${ISCSI_PASSWORD}" ]
		then
			ADDITIONAL="${ADDITIONAL} -w ${ISCSI_PASSWORD}"
		fi

		if [ "${ISCSI_USERNAME_IN}" ]
		then
			ADDITIONAL="${ADDITIONAL} -U ${ISCSI_USERNAME_IN}"
		fi

		if [ "${ISCSI_PASSWORD_IN}" ]
		then
			ADDITIONAL="${ADDITIONAL} -W ${ISCSI_PASSWORD_IN}"
		fi

		if [ "${ISCSI_DEBUG}" ]
		then
			ADDITIONAL="${ADDITIONAL} -d ${ISCSI_DEBUG}"
		fi

		iscsistart -i "${ISCSI_INITIATORNAME}" -t "${ISCSI_TARGET}" -a "${ISCSI_ADDRESS}" ${ADDITIONAL}

		# let iscsid settle - otherwise mounting the iSCSI-disk will fail (very rarely, though)
		sleep 1
	fi
}


# Open a LUKS device
# It is either the root or a swap, other devices are supported in the scripts provided with sys-fs/cryptsetup
# $1 - root/swap
openLUKS() {
	# please use 'tr' and this line, or remove it
	# eval local TYPE=`uppercase $1`

	case $1 in
		root)
			local TYPE=ROOT
			;;
		swap)
			local TYPE=SWAP
			;;
	esac

	eval local LUKS_DEVICE='"${CRYPT_'${TYPE}'}"' LUKS_NAME="$1" LUKS_KEY='"${CRYPT_'${TYPE}'_KEY}"' LUKS_KEYDEV='"${CRYPT_'${TYPE}'_KEYDEV}"' LUKS_TRIM='"${CRYPT_'${TYPE}'_TRIM}"'
	local DEV_ERROR=0 KEY_ERROR=0 KEYDEV_ERROR=0
	local mntkey="/mnt/key/" cryptsetup_options=''

	[ ! -e /sbin/cryptsetup ] && bad_msg "The ramdisk does not support LUKS" && exit 1
	while [ 1 ]
	do
		local gpg_cmd=""
		# if crypt_silent=1 and some error occurs, enter shell quietly
		if [ \( ${CRYPT_SILENT} -eq 1 \) -a \( \( \( ${DEV_ERROR} -eq 1 \) -o \( ${KEY_ERROR} -eq 1 \) \) -o \( ${KEYDEV_ERROR} -eq 1 \) \) ]
		then
			run_shell
		elif [ ${DEV_ERROR} -eq 1 ]
		then
			prompt_user "LUKS_DEVICE" "${LUKS_NAME}"
			DEV_ERROR=0
		elif [ ${KEY_ERROR} -eq 1 ]
		then
			prompt_user "LUKS_KEY" "${LUKS_NAME} key"
			KEY_ERROR=0
		elif [ ${KEYDEV_ERROR} -eq 1 ]
		then
			prompt_user "LUKS_KEYDEV" "${LUKS_NAME} key device"
			KEYDEV_ERROR=0
		else
			LUKS_DEVICE=$(find_real_device "${LUKS_DEVICE}")

			setup_md_device ${LUKS_DEVICE}
			cryptsetup isLuks ${LUKS_DEVICE}
			if [ $? -ne 0 ]
			then
				bad_msg "The LUKS device ${LUKS_DEVICE} does not contain a LUKS header" ${CRYPT_SILENT}
				DEV_ERROR=1
				continue
			else
				# Handle keys
				if [ "x${LUKS_TRIM}" = "xyes" ]
				then
					good_msg "Enabling TRIM support for ${LUKS_NAME}." ${CRYPT_SILENT}
					cryptsetup_options="${cryptsetup_options} --allow-discards"
				fi

				if [ -n "${LUKS_KEY}" ] 
				then
					local REAL_LUKS_KEYDEV="${LUKS_KEYDEV}"
					if [ ! -e "${mntkey}${LUKS_KEY}" ] 
					then
						REAL_LUKS_KEYDEV=$(find_real_device "${LUKS_KEYDEV}")
						if [ -b "${REAL_LUKS_KEYDEV}" ]
						then good_msg "Using key device ${REAL_LUKS_KEYDEV}." ${CRYPT_SILENT}
						else
							good_msg "Please insert removable device ${LUKS_KEYDEV} for ${LUKS_NAME}" ${CRYPT_SILENT}
							# abort after 10 secs
							local count=10
							while [ ${count} -gt 0 ]
							do 
								count=$((count-1))
								sleep 1
								REAL_LUKS_KEYDEV=$(find_real_device "${LUKS_KEYDEV}")
								if [ -b "${REAL_LUKS_KEYDEV}" ]
								then
									good_msg "Removable device ${REAL_LUKS_KEYDEV} detected." ${CRYPT_SILENT}
									break
								fi
							done
							if [ ! -b "${REAL_LUKS_KEYDEV}" ]
							then
								eval CRYPT_${TYPE}_KEY=${LUKS_KEY}
								bootstrapKey ${TYPE}
								eval LUKS_KEYDEV='"${CRYPT_'${TYPE}'_KEYDEV}"'
								REAL_LUKS_KEYDEV=$(find_real_device "${LUKS_KEYDEV}")
								if [ ! -b "${REAL_LUKS_KEYDEV}" ]; then
									KEYDEV_ERROR=1
									bad_msg "Removable device ${LUKS_KEYDEV} not found." ${CRYPT_SILENT}
									continue
								fi
								# continue otherwise will mount keydev which is mounted by bootstrap
								continue
							fi
						fi
						# At this point a device was recognized, now let's see if the key is there
						[ ! -d "$mntkey" ] && mkdir -p ${mntkey} 2>/dev/null >/dev/null

						mount -n -o ro ${REAL_LUKS_KEYDEV} ${mntkey} >/dev/null 2>/dev/null
						if [ "$?" != '0' ]
						then
							KEYDEV_ERROR=1
							bad_msg "Mounting of device ${REAL_LUKS_KEYDEV} failed." ${CRYPT_SILENT}
							continue
						else
							good_msg "Removable device ${REAL_LUKS_KEYDEV} mounted." ${CRYPT_SILENT}
							sleep 2
							# keyfile exists?
							if [ ! -e "${mntkey}${LUKS_KEY}" ]; then
								umount -n ${mntkey} 2>/dev/null >/dev/null
								KEY_ERROR=1
								KEYDEV_ERROR=1
								bad_msg "Key {LUKS_KEY} on device ${REAL_LUKS_KEYDEV} not found." ${CRYPT_SILENT}
								continue
							fi
						fi
					fi
					# At this point a candidate key exists (either mounted before or not)
					good_msg "${LUKS_KEY} on device ${REAL_LUKS_KEYDEV} found" ${CRYPT_SILENT}
					if [ "$(echo ${LUKS_KEY} | grep -o '.gpg$')" = ".gpg" ] && [ -e /sbin/gpg ] ; then
						[ -e /dev/tty ] && mv /dev/tty /dev/tty.org
						mknod /dev/tty c 5 1
						cryptsetup_options="${cryptsetup_options} -d -"
						gpg_cmd="/sbin/gpg --logger-file /dev/null --quiet --decrypt ${mntkey}${LUKS_KEY} |"
					else
						cryptsetup_options="${cryptsetup_options} -d ${mntkey}${LUKS_KEY}"
					fi
				fi
				# At this point, keyfile or not, we're ready!
				crypt_filter "${gpg_cmd}cryptsetup ${cryptsetup_options} luksOpen ${LUKS_DEVICE} ${LUKS_NAME}"
				crypt_filter_ret=$?

				[ -e /dev/tty.org ] \
					&& rm -f /dev/tty \
					&& mv /dev/tty.org /dev/tty

				if [ ${crypt_filter_ret} -eq 0 ]
				then
					good_msg "LUKS device ${LUKS_DEVICE} opened" ${CRYPT_SILENT}
					break
				else
					bad_msg "Failed to open LUKS device ${LUKS_DEVICE}" ${CRYPT_SILENT}
					DEV_ERROR=1
					KEY_ERROR=1
					KEYDEV_ERROR=1
				fi
			fi
		fi
	done
	umount ${mntkey} 2>/dev/null >/dev/null
	rmdir -p ${mntkey} 2>/dev/null >/dev/null
}

startLUKS() {

	# if key is set but key device isn't, find it
	
	[ -n "${CRYPT_ROOT_KEY}" ] && [ -z "${CRYPT_ROOT_KEYDEV}" ] \
		&& sleep 6 && bootstrapKey "ROOT"

	if [ -n "${CRYPT_ROOT}" ]; then
		openLUKS "root"
		if [ -n "${REAL_ROOT}" ]
		then
			# Rescan volumes
			startVolumes
		else
			REAL_ROOT="/dev/mapper/root"
		fi
	fi

	# same for swap, but no need to sleep if root was unencrypted
	[ -n "${CRYPT_SWAP_KEY}" ] && [ -z "${CRYPT_SWAP_KEYDEV}" ] \
		&& { [ -z "${CRYPT_ROOT}" ] && sleep 6; bootstrapKey "SWAP"; }

	if [ -n "${CRYPT_SWAP}" ]; then
		openLUKS "swap"
		if [ -z "${REAL_RESUME}" ]
		then
			# Resume from swap as default
			REAL_RESUME="/dev/mapper/swap"
		fi
	fi
}

sdelay() {
	# Sleep a specific number of seconds if SDELAY is set
	if [ -n "${SDELAY}" ]
	then
		good_msg "Waiting ${SDELAY} seconds..."
		sleep ${SDELAY}
	elif [ "${CDROOT}" = '1' ]
	then
		good_msg 'Hint: Use scandelay[=seconds] if your live medium is slowand boot fails'
	fi
}

quiet_kmsg() {
	# if QUIET is set make the kernel less chatty
	[ -n "$QUIET" ] && echo '0' > /proc/sys/kernel/printk
}

verbose_kmsg() {
	# if QUIET is set make the kernel less chatty
	[ -n "$QUIET" ] && echo '6' > /proc/sys/kernel/printk
}


cdupdate() {
	if [ "${CDROOT}" = '1' ]
	then
		if [ -x /${CDROOT_PATH}/cdupdate.sh ]
		then
			good_msg "Running cdupdate.sh"
			${CDROOT_PATH}/cdupdate.sh
			if [ "$?" != '0' ]
			then
				bad_msg "Executing cdupdate.sh failed!"
				run_shell
			fi
		else
			good_msg 'No cdupdate.sh script found, skipping...'
		fi
	fi
}

setup_btrfsctl() {
	# start BTRFS volume detection, if available
	[ -x /sbin/btrfsctl ] && /sbin/btrfsctl -a
}

setup_md_device() {
	local device

	[ -z "$1" ] && device="${REAL_ROOT}" || device="$1"
	[ -z "${device}" ] && return # LiveCD

	if [ `echo ${device}|sed -e 's#\(luks:\)\?\(/dev/md\)[[:digit:]]\+#\2#'` = "/dev/md" ]
	then
		good_msg 'Detected real_root as a md device. Setting up the device node...'
		MD_NUMBER=`echo ${device}|sed -e 's#\(luks:\)\?/dev/md\([[:digit:]]\+\)#\2#'`
		if [ ! -e /dev/md${MD_NUMBER} ]
		then
			mknod /dev/md${MD_NUMBER} b 9 ${MD_NUMBER} >/dev/null 2>&1
			[ $? -ne 0 ] && bad_msg "Creation of /dev/md${MD_NUMBER} failed..."
		fi
		mdstart ${MDPART} /dev/md${MD_NUMBER}
	fi
}

do_rundebugshell() {
	good_msg 'Type "exit" to continue with normal bootup.'
	[ -x /bin/sh ] && /bin/sh || /bin/ash
}

rundebugshell() {
	if [ -n "$DEBUG" ]
	then
		good_msg 'Starting debug shell as requested by "debug" option.'
		good_msg "Stopping by: ${1}"
		do_rundebugshell
	fi
}

do_resume() {
	if [ -d /proc/suspend2 -o -d /sys/power/suspend2 -o -d /sys/power/tuxonice ]; then
		tuxonice_resume
	else
		swsusp_resume
	fi
}

swsusp_resume() {
	# determine swap resume partition
	local device=$(ls -lL "${REAL_RESUME}" | sed 's/\  */ /g' | cut -d \  -f 5-6 | sed 's/,\ */:/')
	[ -f /sys/power/resume ] && echo "${device}" > /sys/power/resume
}

tuxonice_resume() {
	local splash_theme
	if grep "splash=" /proc/cmdline > /dev/null 2>&1; then
		splash_theme=$(cat /proc/cmdline | sed 's/.*splash=/splash=/' | sed 's/ .*//' | sed 's/.*theme://' | sed 's/,.*//')
	fi

	local tuxonice_userui_program="/sys/power/tuxonice/user_interface/program"
	local tuxonice_do_resume="/sys/power/tuxonice/do_resume"
	local tuxonice_resumedev="/sys/power/tuxonice/resume"
	local tuxonice_replace_swsusp="/sys/power/tuxonice/replace_swsusp"

	#
	# Backward compatibility
	#
	if [ -e /sys/power/suspend2 ]; then
		tuxonice_userui_program="/sys/power/suspend2/user_interface/program"
		tuxonice_do_resume="/sys/power/suspend2/do_resume"
		tuxonice_resumedev="/sys/power/suspend2/resume"
		tuxonice_replace_swsusp="/sys/power/suspend2/replace_swsusp"
	elif [ -e /proc/suspend2 ]; then
		tuxonice_userui_program="/proc/suspend2/userui_program"
		tuxonice_do_resume="/proc/suspend2/do_resume"
		tuxonice_resumedev="/proc/suspend2/resume"
		tuxonice_replace_swsusp="/proc/suspend2/replace_swsusp"
	fi

	# if 'use_swsusp' is given, use swsusp instead
	if grep "use_swsusp" /proc/cmdline > /dev/null 2>&1; then
		echo 0 > ${tuxonice_replace_swsusp}
		swsusp_resume
		return
	fi

	modules_scan tuxonice

	# we both configure tuxonice and activate resuming,
	# however the kernel will resume only if an image is found

	if ! grep suspend_noui /proc/cmdline > /dev/null 2>&1; then
		which suspend2ui_text > /dev/null 2>&1 && which suspend2ui_text > "${tuxonice_userui_program}"
		which tuxoniceui_text > /dev/null 2>&1 && which tuxoniceui_text > "${tuxonice_userui_program}"

		if [ -n "${splash_theme}" ]; then
			ln -s /etc/splash/${splash_theme} /etc/splash/suspend2
			ln -s /etc/splash/${splash_theme} /etc/splash/tuxonice

			which suspend2ui_fbsplash > /dev/null 2>&1 && which suspend2ui_fbsplash > "${tuxonice_userui_program}"
			which tuxoniceui_fbsplash > /dev/null 2>&1 && which tuxoniceui_fbsplash > "${tuxonice_userui_program}"
		fi

	fi
	echo "${REAL_RESUME}" > "${tuxonice_resumedev}"
	echo > "${tuxonice_do_resume}"
}

find_loop() {
	for loop in ${LOOPS}
	do
		if [ -e "${CDROOT_PATH}""${loop}" ]
		then
			LOOP="${loop}"
		fi
	done
}

find_looptype() {
	LOOPTYPE="${LOOP##*.}"
	[ "${LOOPTYPE}" == "loop" ] && LOOPTYPE="normal"
	[ "${LOOP}" == "/zisofs" ] && LOOPTYPE="${LOOP#/}"
	[ -z "${LOOPTYPE}" ] && LOOPTYPE="noloop"
}

getdvhoff() {
	echo $(( $(hexdump -n 4 -s $((316 + 12 * $2)) -e '"%i"' $1) * 512))
}

setup_squashfs_aufs() {
	# Setup aufs directories and vars
	aufs_rw_branch=/mnt/aufs-rw-branch aufs_ro_branch=/mnt/livecd

	for dir in $aufs_rw_branch $aufs_ro_branch; do
		[ ! -d $dir ] && mkdir -p "$dir"
	done

	good_msg "Loading aufs module ..."
	modprobe aufs &>/dev/null

        mount -t squashfs -o loop,ro "$CDROOT_PATH/$LOOPEXT$LOOP" "$aufs_ro_branch"
	mount -t tmpfs none "$aufs_rw_branch"
	mount -t aufs -o "br:$aufs_rw_branch:$aufs_ro_branch" aufs "$NEW_ROOT"
}

setup_unionfs() {
	local rw_dir=$1
	local ro_dir=$2
	if [ "${USE_UNIONFS_NORMAL}" = '1' ]
	then
		# Directory used for rw changes in union mount filesystem
		UNION=/union
#		MEMORY=/memory
#		if [ -z "$UID" ]
#		then
#			CHANGES=$MEMORY/unionfs_changes/default
#		else
#			CHANGES=$MEMORY/unionfs_changes/$UID
#		fi

#		mkdir -p ${MEMORY}
		mkdir -p ${UNION}
		good_msg "Loading fuse module"
		modprobe fuse > /dev/null 2>&1
#                 if [ -n "${UNIONFS}" ] 	 
#                 then 	 
#                         CHANGESDEV=${UNIONFS} 	 
#                         good_msg "mounting $CHANGESDEV to $MEMORY for unionfs support" 	 
#                         mount -t auto $CHANGESDEV $MEMORY 	 
#                         # mount tmpfs only in the case when changes= boot parameter was 	 
#                         # empty or we were not able to mount the storage device 	 
#                         ret=$? 	 
#                         if [ ${ret} -ne 0 ]
#                         then 	 
#                                 bad_msg "mount of $CHANGESDEV failed falling back to ramdisk based unionfs" 	 
#                                 mount -t tmpfs tmpfs $MEMORY 	 
#                         fi 	 
#                         if [ "${CDROOT}" -eq '1' -a ! -f ${MEMORY}/livecd.unionfs  ] 	 
#                         then 	 
#                                 umount $MEMORY 	 
#                                 bad_msg "failed to find livecd.unionfs file on $CHANGESDEV" 	 
#                                 bad_msg "create a livecd.unionfs file on this device if you wish to use it for unionfs" 	 
#                                 bad_msg "falling back to ramdisk based unionfs for safety" 	 
#                                 mount -t tmpfs tmpfs $MEMORY 	 
#                         fi 	 
#                 else 	 
#                         good_msg "Mounting ramdisk to $MEMORY for unionfs support..." 	 
#                         mount -t tmpfs tmpfs $MEMORY 	 
#                 fi 	 
  	 
		mkdir /tmp
		mkdir -p ${UNION}
#		mkdir -p $CHANGES
#		mount -t unionfs -o dirs=$CHANGES=rw unionfs ${UNION}
		good_msg "Creating union mount"
		unionfs -o allow_other,cow,noinitgroups,suid,dev,default_permissions,use_ino ${rw_dir}=RW:${ro_dir}=RO ${UNION} 2>/dev/null
		ret=$?
		if [ ${ret} -ne 0 ]
		then
			bad_msg "Can't setup union mount!"
			USE_UNIONFS_NORMAL=0
		fi
		[ ! -d "${NEW_ROOT}${CDROOT_PATH}" ] && mkdir -p "${NEW_ROOT}${CDROOT_PATH}"
		mount --bind "${CDROOT_PATH}" "${NEW_ROOT}${CDROOT_PATH}"
	else
		USE_UNIONFS_NORMAL=0
	fi
}

get_mounts_list()
{
	awk '
		/^[[:blank:]]*#/ { next }
		{ print $1 }
		' ${NEW_ROOT}/etc/initramfs.mounts
}

get_mount_fstype()
{
	[ -e "${NEW_ROOT}"/etc/fstab ] || return 1
	awk -v fs="$1" '
		/^[[:blank:]]*#/ { next }
		$2 == fs { print $3 }
		' ${NEW_ROOT}/etc/fstab
}

get_mount_options()
{
	[ -e "${NEW_ROOT}"/etc/fstab ] || return 1
	awk -v fs="$1" '
		/^[[:blank:]]*#/ { next }
		$2 == fs { print $4 }
		' ${NEW_ROOT}/etc/fstab
}

get_mount_device()
{
	[ -e "${NEW_ROOT}"/etc/fstab ] || return 1
	awk -v fs="$1" '
		/^[[:blank:]]*#/ { next }
		$2 == fs { print $1 }
		' ${NEW_ROOT}/etc/fstab
}

# If the kernel is handed a mount option is does not recognize, it WILL fail to
# mount. util-linux handles auto/noauto, but busybox passes it straight to the kernel
# which then rejects the mount.
# To make like a little easier, busybox mount does not care about leading,
# trailing or duplicate commas.
strip_mount_options()
{
	sed -r 's/(,|^)(no)?auto(,|$)/,/g'
}