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|
#! /bin/bash
#
# usbboot
#
# Author: Michael Towers <gradgrind[at]online[dot]de>
#
# This file is part of the larch project.
#
# larch is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# larch is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with larch; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
#----------------------------------------------------------------------------
# 2008.06.22
APP="$( basename $0 )"
usage () {
echo
echo "Usage:"
echo " ${APP} [<Arch installation root directory>]"
echo
echo " Prepare a bootable USB-stick from a larch build."
echo " If no Arch directory is given, '/' is assumed."
exit 1
}
if [ -n "$1" ]; then
AINSTALL="$( readlink -f $1 )"
else
AINSTALL=""
fi
CDDATA=${AINSTALL}/.larch/cd
if [ ! -f ${CDDATA}/system.sqf ]; then
echo "ERROR: ${CDDATA} does not contain larch cd data"
usage
fi
if [ ! -f ${CDDATA}/isolinux/isolinux.cfg ]; then
echo "ERROR: isolinux data not in ${CDDATA}/isolinux"
exit 1
fi
if ! [ -f ${AINSTALL}/usr/bin/syslinux ]; then
echo "ERROR: syslinux not found -"
echo " it must be installed on live system"
return 1
fi
echo "//"
echo "// **********************************************************"
echo "//"
echo "// ${APP} will prepare a bootable USB stick with your"
echo "// previously prepared larch data from ${CDDATA}"
echo "//"
echo "// Please insert your USB stick, which should already be"
echo "// appropriately partitioned."
echo "//"
echo "// **********************************************************"
echo "//"
# test if the script is started by root user. If not, exit
if [ $UID -ne 0 ]; then
echo "Only root can run ${APP}"; exit 1
fi
echo "// Do you want to continue?"
# Await yes or no
read -p "// [y/N]: " ans
if [ -z "`echo ${ans} | grep '^ *[yY]'`" ]; then exit 2; fi
echo "//"
echo "// Enter the number of the partition you wish to use (0 to quit):"
devices=/tmp/devices$$
:> ${devices}
i=0
sfdisk -d | grep "/dev/sd[a-z][1-4] " | grep -v "Id= [05]" | \
sed "s|\(.*\):.*size=\( *[0-9]*\).*|\1 \2|" | while read device sectors; do
i=$(( ${i} + 1 ))
echo "${device}" >>${devices}
echo "// ${i}: ${device} $(( ${sectors} / 2048 )) MiB"
done
while true; do
read -p "// Device: " d
if [ "${d}" -eq "0" ]; then exit 1; fi
i=0
{ while read device; do
i=$(( ${i} + 1 ))
if [ "${d}" -eq "${i}" ]; then break 2; fi
done } <${devices}
done
rm ${devices}
echo "//"
read -p "// \"${device}\" will now be prepared. Continue? [y/N]: " ans
if [ -z "`echo ${ans} | grep '^ *[yY]'`" ]; then exit 1; fi
echo "//"
echo "// Formatting ${device} (vfat)"
dev=${device:0:8}
part=${device:8}
sfdisk ${dev} -N${part} <<EOF
,,0e,*
EOF
dd if=/dev/zero of=${device} bs=512 count=1
mkfs.vfat ${device}
echo "// Copying the boot sector"
dd if=${AINSTALL}/usr/lib/syslinux/mbr.bin of=${dev}
echo "// Copying the files"
stick=/tmp/mnt
mkdir -p ${stick}
umount ${device} &>/dev/null
mount ${device} ${stick}
if [ $? != 0 ]; then
echo "ERROR: Failed to mount device, quitting"
exit 3
fi
cp -a ${CDDATA}/* ${stick}
mv ${stick}/isolinux ${stick}/syslinux
mv ${stick}/syslinux/isolinux.cfg ${stick}/syslinux/syslinux.cfg
rm -f ${stick}/syslinux/isolinux*
umount ${stick}
echo "// Running syslinux"
if [ -n "${AINSTALL}" ]; then
mount --bind /dev ${AINSTALL}/dev
mount --bind /proc ${AINSTALL}/proc
chroot ${AINSTALL} syslinux ${device}
umount ${AINSTALL}/dev
umount ${AINSTALL}/proc
else
syslinux ${device}
fi
echo "//"
echo "// Done!"
echo "// If all went well your usb stick should now be a bootable larch system"
|
