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#!/bin/sh
# losetup - wrapper around losetup
# Copyright (C) 2006-2010 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.
Losetup ()
{
DEVICE="${1}"
FILE="${2}"
PARTITION="${3:-1}"
${LH_ROOT_COMMAND} ${LH_LOSETUP} "${DEVICE}" "${FILE}"
FDISK_OUT="$(${LH_FDISK} -l -u ${DEVICE} 2>&1)"
${LH_ROOT_COMMAND} ${LH_LOSETUP} -d "${DEVICE}"
LOOPDEVICE="$(echo ${DEVICE}p${PARTITION})"
if [ "${PARTITION}" = "0" ]
then
Echo_message "Mounting %s with offset 0" "${DEVICE}"
${LH_ROOT_COMMAND} ${LH_LOSETUP} "${DEVICE}" "${FILE}"
else
SECTORS="$(echo "$FDISK_OUT" | sed -ne "s|^$LOOPDEVICE[ *]*\([0-9]*\).*|\1|p")"
OFFSET="$(expr ${SECTORS} '*' 512)"
Echo_message "Mounting %s with offset %s" "${DEVICE}" "${OFFSET}"
${LH_ROOT_COMMAND} ${LH_LOSETUP} -o "${OFFSET}" "${DEVICE}" "${FILE}"
fi
}
Calculate_partition_size ()
{
ORIGINAL_SIZE="${1}"
FILESYSTEM="${2}"
case "${FILESYSTEM}" in
ext2|ext3)
PERCENT="5"
;;
*)
PERCENT="3"
;;
esac
echo $(expr ${ORIGINAL_SIZE} + ${ORIGINAL_SIZE} \* ${PERCENT} / 100 + 1)
}
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