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#!/bin/sh
# lh_losetup - wrapper around losetup
# Copyright (C) 2006-2007 Daniel Baumann <daniel@debian.org>
#
# live-helper comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
# This is free software, and you are welcome to redistribute it
# under certain conditions; see COPYING for details.
set -e
# Including common functions
LH_BASE="${LH_BASE:-/usr/share/live-helper}"
for FUNCTION in "${LH_BASE}"/functions/*.sh
do
. "${FUNCTION}"
done
# Setting static variables
DESCRIPTION="wrapper around losetup"
HELP=""
USAGE="${PROGRAM} DEVICE FILE [PARTITION]"
Arguments "${@}"
# Reading configuration files
Read_conffile config/common
Read_conffile config/bootstrap
Read_conffile config/chroot
Read_conffile config/binary
Read_conffile config/source
Set_defaults
DEVICE="${1}"
FILE="${2}"
PARTITION="${3:=1}"
${LH_ROOT_COMMAND} ${LH_LOSETUP} "${DEVICE}" "${FILE}"
FDISK_OUT="`fdisk -l -u ${DEVICE} 2>&1`"
${LH_ROOT_COMMAND} ${LH_LOSETUP} -d "${DEVICE}"
LOOPDEVICE="`echo ${DEVICE}p${PARTITION}`"
if [ "${PARTITION}" = "0" ]
then
Echo_message "Mounting ${DEVICE} with offset 0"
${LH_ROOT_COMMAND} ${LH_LOSETUP} "${DEVICE}" "${FILE}"
else
CYLINDERS="`echo "$FDISK_OUT" | sed -ne "s_^$LOOPDEVICE[ *]*\([0-9]*\).*_\1_p"`"
OFFSET="`expr ${CYLINDERS} '*' 512`"
Echo_message "Mounting ${DEVICE} with offset ${OFFSET}"
${LH_ROOT_COMMAND} ${LH_LOSETUP} -o "${OFFSET}" "${DEVICE}" "${FILE}"
fi
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