#!/bin/sh
#
#	mkboot - make boot floppy, make root device bootable, etc.
#							Author: Kees J. Bot

trap 'e=$?; rm -f /tmp/mkb.$$; exit $e' 0 2

mdec=/usr/mdec	# bootstraps

# Check arguments.
case "$#:$1" in
1:bootable | 1:hdinstall | 1:hdtest | [12]:fdboot)
	action=$1 dev=$2
	;;
*)	echo "Usage: $0 [bootable | hdinstall | hdtest | fdboot [device]]" >&2
	exit 1
esac

# Get the device table.
. /etc/fstab

# The real root device may be the RAM disk.
realroot=`printroot -r`

case $action in
bootable | hdinstall)
	# We need the root device.
	if [ $realroot = $root ]
	then
		rootdir=
	else
		umount $root 2>/dev/null
		mount $root /root || exit
		rootdir=/root
	fi
esac

case $action in
bootable)
	# Install the boot monitor on the root device and make it bootable.
	install -cs -m 644 $mdec/boot $rootdir/boot || exit
	sync
	installboot -device $root $mdec/bootblock /boot || exit
	;;
hdinstall)
	# Install a new image on the root device.
	if [ -d $rootdir/minix ]
	then
		# /minix is a directory containing images.
		target=minix/`uname -r`.`uname -v`
	else
		# /minix is the image.
		target=minix
	fi
	if [ $rootdir/$target -newer image ]
	then
		echo "$root:/$target is up to date"
	else
		ps -U ../kernel/kernel ../mm/mm ../fs/fs >/dev/null || exit
		if [ $realroot != $root ]
		then
			install -c /etc/psdatabase $rootdir/etc/psdatabase
		fi
		install -c image $rootdir/$target || exit
		echo "New $root:/$target installed."
	fi
	;;
hdtest | fdboot)
	# hdtest: Turn the hard disk scratch device into a boot disk for
	#	  testing.
	# fdboot: Make a boot floppy.

	if [ $action = hdtest ]
	then
		dev=$tmp
	elif [ -z "$dev" ]
	then
		echo -n \
"Finish the name of the floppy device to write (by default 'fd0'): /dev/";
		read dev
		case "$dev" in
		'')	dev=/dev/fd0
			;;
		/dev/*)
			;;
		*)	dev=/dev/$dev
		esac
	fi

	# Make a file system.
	umount $dev 2>/dev/null
	mkfs -i 512 $dev || exit

	# Install /dev, /boot and /minix.
	mount $dev /mnt || exit
	cpdir /dev /mnt/dev || exit
	cp -p $mdec/boot /mnt/boot || exit
	cp -p image /mnt/minix || exit
	umount $dev || exit

	# Make bootable and copy the boot parameters.
	installboot -d $dev $mdec/bootblock boot || exit
	dd if=$root of=$dev skip=1 seek=1 count=1 conv=silent || exit
	edparams $dev 'main(){delay 2000;boot}; save' || exit
	echo "Test kernel installed on $dev with boot parameters from $root"
esac

case $action in
bootable | hdinstall)
	# Unmount the root device.
	if [ $realroot != $root ]
	then
		umount $root
	fi
esac
: exit 0