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#!/bin/sh

# lh_binary_usb-hdd(1) - build binary usb-hdd image
# Copyright (C) 2006-2008 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="build binary image"
HELP=""
USAGE="${PROGRAM} [--force]"

Arguments "${@}"

# Reading configuration files
Read_conffiles config/all config/common config/bootstrap config/chroot config/binary config/source
Set_defaults

if ! In_list usb-hdd "${LH_BINARY_IMAGES}"
then
	exit 0
fi

Echo_message "Begin building binary usb-hdd image..."

# Requiring stage file
Require_stagefile .stage/config .stage/bootstrap .stage/chroot_proc

# Checking stage file
Check_stagefile .stage/binary_usb-hdd

# Checking lock file
Check_lockfile .lock

# Creating lock file
Create_lockfile .lock

# Checking depends
Check_package chroot/sbin/mkdosfs dosfstools
Check_package chroot/usr/share/doc/mtools mtools
Check_package chroot/sbin/parted parted

if [ "${LH_ARCHITECTURE}" = "sparc" ]
then
	case "${LH_BINARY_FILESYSTEM}" in
		ext2|ext3)
			Check_package chroot/sbin/mkfs.ext2 e2fsprogs
			;;

		*)
			Echo_error "Sparc only supports booting from ext2, ext3 (or ufs)"
			exit 1
			;;
	esac
fi

case "${LH_BOOTLOADER}" in
	grub)
		Check_package chroot/usr/sbin/grub grub
		;;

	syslinux)
		Check_package chroot/usr/bin/syslinux syslinux
		;;
esac

# Restoring cache
Restore_cache cache/packages_binary

# Installing depends
Install_package

# Remove old binary
if [ -f binary.img ]
then
	rm -f binary.img
fi

# Enforce fat32 if we find individual files bigger than 2GB
if [ "${LH_BINARY_FILESYSTEM}" = "fat16" ] && [ -n "$(find binary -size +1999M)" ]
then
	Echo_warning "FAT16 doesn't support files larger than 2GB, automatically enforcing FAT32."

	LH_BINARY_FILESYSTEM="fat32"
	export LH_BINARY_FILESYSTEM
fi

# Enforce fat32 if we have images in total bigger than 2GB
if [ "${LH_BINARY_FILESYSTEM}" = "fat16" ] && [ "$(du -s binary | awk '{ print $1 }')" -gt "1900000" ]
then
	Echo_warning "FAT16 doesn't support partitions larger than 2GB, automatically enforcing FAT32"

	LH_BINARY_FILESYSTEM="fat32"
	export LH_BINARY_FILESYSTEM
fi

# Everything which comes here needs to be cleaned up,
DU_DIM="$(du -ms binary | cut -f1)"
REAL_DIM="$(Calculate_partition_size ${DU_DIM} ${LH_BINARY_FILESYSTEM})"
dd if=/dev/zero of=chroot/binary.img bs=1024k count=0 seek=${REAL_DIM}
FREELO="$(${LH_LOSETUP} -f)"
if [ ! -b chroot/${FREELO} ]
then
	MAKEDEV="true"

	mv chroot/dev chroot/dev.tmp
	find /dev | cpio -dmpu chroot
fi

echo "!!! The following error/warning messages can be ignored !!!"
Losetup $FREELO chroot/binary.img 0

case "${LH_ARCHITECTURE}" in
	sparc)
		PARTITION_TABLE_TYPE="sun"
		;;
	*)
		PARTITION_TABLE_TYPE="msdos"
		;;
esac

case "${LH_BINARY_FILESYSTEM}" in
	ext2|ext3)
		PARTITION_TYPE="ext2"
		;;

	fat16|fat32)
		PARTITION_TYPE="${LH_BINARY_FILESYSTEM}"
		;;

	*)
		Echo_error "Unsupported binary filesystem %s" "${LH_BINARY_FILESYSTEM}"
		exit 1
		;;
esac

case "${LH_CHROOT_BUILD}" in
	enabled)
		Chroot chroot "parted -s ${FREELO} mklabel ${PARTITION_TABLE_TYPE}" || true
		Chroot chroot "parted -s ${FREELO} mkpart primary ${PARTITION_TYPE} 0.0 100%" || true
		Chroot chroot "parted -s ${FREELO} set 1 boot on" || true
		Chroot chroot "parted -s ${FREELO} set 1 lba off" || true

		if [ "${LH_BOOTLOADER}" = "syslinux" ]
		then
			dd if=chroot/usr/lib/syslinux/mbr.bin of=${FREELO} bs=440 count=1
		fi
		;;

	disabled)
		parted -s ${FREELO} mklabel ${PARTITION_TABLE_TYPE} || true
		parted -s ${FREELO} mkpart primary ${PARTITION_TYPE} 0.0 100%
		parted -s ${FREELO} set 1 boot on || true
		parted -s ${FREELO} set 1 lba off || true

		if [ "${LH_BOOTLOADER}" = "syslinux" ]
		then
			dd if=/usr/lib/syslinux/mbr.bin of=${FREELO} bs=440 count=1
		fi
		;;
esac

${LH_LOSETUP} -d ${FREELO}

FREELO="$(${LH_LOSETUP} -f)"
Losetup $FREELO chroot/binary.img 1

case "${LH_BINARY_FILESYSTEM}" in
	ext2|ext3)
		MKFS="${LH_BINARY_FILESYSTEM}"
		MKFS_OPTIONS="-L DEBIAN_LIVE -m 0"
		;;

	fat16)
		MKFS="vfat"
		MKFS_OPTIONS="-F 16 -n DEBIAN_LIVE"
		;;

	fat32)
		MKFS="vfat"
		MKFS_OPTIONS="-F 32 -n DEBIAN_LIVE"
		;;
esac

case "${LH_CHROOT_BUILD}" in
	enabled)
		Chroot chroot "mkfs.${MKFS} ${MKFS_OPTIONS} ${FREELO}"
		;;

	disabled)
		mkfs.${MKFS} ${MKFS_OPTIONS} ${FREELO}
		;;
esac

case "${LH_BINARY_FILESYSTEM}" in
	fat*)
		CP_OPTIONS="-L"
		;;
esac

mkdir -p chroot/binary.tmp
${LH_ROOT_COMMAND} mount ${FREELO} chroot/binary.tmp
cp -r -T ${CP_OPTIONS} binary/ chroot/binary.tmp

FIXME()
{
if [ "${LH_BOOTLOADER}" = "grub" ]
then

cat > chroot/grub.sh << EOF
cd binary.tmp
grub --batch << EOM
find /live/vmlinuz
EOM
EOF

	rootpartition="$(Chroot chroot 'sh grub.sh' 2>/dev/null | grep -A 1 'find /live/vmlinuz' | grep -v 'find /live/vmlinuz')"
	usbdev="$(echo $rootpartition | sed -e 's|,[[:digit:]]||')"
	echo "Root partition is $rootpartition, device is: $usbdev"

	echo "WAITING..." && read WAIT

#cat > chroot/grub.sh << EOF
#grub --batch << EOM
#root $rootpartition
#setup $usbdev
#EOM
#EOF

#Chroot chroot "sh grub.sh"

	rm -f chroot/grub.sh
fi
}

${LH_ROOT_COMMAND} umount chroot/binary.tmp
rmdir chroot/binary.tmp

if [ "${LH_BOOTLOADER}" = "syslinux" ]
then
	case "${LH_CHROOT_BUILD}" in
		enabled)
			Chroot chroot "syslinux ${FREELO}"
			;;

		disabled)
			syslinux ${FREELO}
			;;
	esac
fi

${LH_LOSETUP} -d ${FREELO}

echo "!!! The above error/warning messages can be ignored !!!"

if [ -n "${MAKEDEV}" ]
then
	rm -rf chroot/dev
	mv chroot/dev.tmp chroot/dev
fi

mv chroot/binary.img ./

# Saving cache
Save_cache cache/packages_binary

# Removing depends
Remove_package

# Creating stage file
Create_stagefile .stage/binary_usb-hdd