#!/bin/sh
#	$NetBSD: install.sh,v 1.4 1995/11/21 21:18:53 gwr Exp $
#
# Copyright (c) 1995 Jason R. Thorpe.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 3. All advertising materials mentioning features or use of this software
#    must display the following acknowledgement:
#	This product includes software developed for the NetBSD Project
#	by Jason R. Thorpe.
# 4. The name of the author may not be used to endorse or promote products
#    derived from this software without specific prior written permission
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

#	NetBSD installation script.
#	In a perfect world, this would be a nice C program, with a reasonable
#	user interface.

VERSION=1.1
export VERSION				# XXX needed in subshell
ROOTDISK=""				# filled in below
FILESYSTEMS="/tmp/.filesystems"		# used thoughout
FQDN=""					# domain name

trap "umount /tmp > /dev/null 2>&1" 0

getresp() {
	read resp
	if [ "X$resp" = "X" ]; then
		resp=$1
	fi
}

isin() {
# test the first argument against the remaining ones, return succes on a match
	_a=$1; shift
	while [ $# != 0 ]; do
		if [ "$_a" = "$1" ]; then return 0; fi
		shift
	done
	return 1
}

rmel() {
# remove first argument from list formed by the remaining arguments
	_a=$1; shift
	while [ $# != 0 ]; do
		if [ "$_a" != "$1" ]; then
			echo "$1";
		fi
		shift
	done
}

twiddle() {
# spin the propeller so we don't get bored
	while : ; do
		sleep 1; echo -n "/";
		sleep 1; echo -n "-";
		sleep 1; echo -n "\\";
		sleep 1; echo -n "|";
	done > /dev/tty & echo $!
}

#
# machine dependent section
#

can_read_dev() {
	dd if=/dev/$1 of=/dev/null count=1 > /dev/null 2>&1
}

# List of all disks supported by the miniroot:
ALLDISKS="sd0 sd2 xd0 xd1 xy0 xy1"
md_get_diskdevs() {
	# return available disk devices
	for dev in $ALLDISKS
	do
		can_read_dev r${dev}c && echo $dev
	done
}

md_get_cddevs() {
	# return available CD-ROM devices
	for dev in cd0 cd1
	do
		can_read_dev r${dev}c && echo $dev
	done
}

md_get_ifdevs() {
	# return available network interfaces
	for dev in le0 ie0 ie1
	do
		(ifconfig $dev >/dev/null 2>&1) && echo $dev
	done
}

md_installboot() {
	# $1 is the root disk
	echo -n "Installing boot block..."
	cd /usr/mdec
	cp -p ./ufsboot /mnt/ufsboot
	sync ; sleep 1 ; sync
	./installboot /mnt/ufsboot bootxx /dev/r${1}a
	echo "done."
}

md_checkfordisklabel() {
	# $1 is the disk to check
	disklabel $1 > /dev/null 2> /tmp/checkfordisklabel
	if grep "no disk label" /tmp/checkfordisklabel; then
		rval="1"
	elif grep "disk label corrupted" /tmp/checkfordisklabel; then
		rval="2"
	else
		rval="0"
	fi

	rm -f /tmp/checkfordisklabel
}

md_labeldisk() {
	# $1 is the disk to label
	disklabel -e $1
}

# Note, while they might not seem machine-dependent, the
# welcome banner and the punt message may contain information
# and/or instructions specific to the type of machine.
md_welcome_banner() {
echo	"
Welcome to the NetBSD/sun3 ${VERSION} installation program.
" ; cat << \__welcome_banner_1

This program is designed to help you install NetBSD on your system in a
simple and rational way.  You'll be asked several questions, and it will
be useful to have the installation notes and a calculator at hand.

As with anything which modifies your disk's contents, this program can
cause SIGNIFICANT data loss, and you are advised to make sure all your
disks are backed up before beginning the installation process.

Default answers are displyed in brackets after the questions.
You can hit Control-C at any time to quit, but if you do so at a
prompt, you may have to hit return.  Also, quitting in the middle of
installation may leave your system in an inconsistent state.

__welcome_banner_1
}

md_not_going_to_install() {
cat << \__not_going_to_install_1

OK, then.  Enter 'halt' or 'reboot' at the prompt,
or proceed with manual installation commands.

__not_going_to_install_1
}

md_congrats() {
cat << \__congratulations_1

CONGRATULATIONS!  You have successfully installed NetBSD!  To boot the
installed system, enter 'reboot' at the command prompt.

__congratulations_1
}

# Note: I don't use the MFS hack.  Just remount root instead.
md_remount() {
	# Make sure root was remounted (creates /etc/fstab)
	if [ ! -f /etc/fstab ]
	then
		# This is normally done by .profile
		sh /.remount
	fi
}

# end of machine dependent section

getrootdisk() {
	cat << \__getrootdisk_1

The installation program needs to know which disk will be
the root disk of the system about to be installed.

Available disks are:

__getrootdisk_1
	_DKDEVS=`md_get_diskdevs`
	echo	"$_DKDEVS"
	echo	""
	echo -n	"Which disk is the root disk? "
	getresp ""
	if isin $resp $_DKDEVS ; then
		ROOTDISK="$resp"
	else
		echo ""
		echo "The disk $resp does not exist."
		ROOTDISK=""
	fi
}

labelmoredisks() {
	cat << \__labelmoredisks_1

You may label the following disks:

__labelmoredisks_1
	echo "$_DKDEVS"
	echo	""
	echo -n	"Label which disk? [done] "
	getresp "done"
	case "$resp" in
		"done")
			;;

		*)
			if echo "$_DKDEVS" | grep "^$resp" > /dev/null ; then
				md_labeldisk $resp
			else
				echo ""
				echo "The disk $resp does not exist."
			fi
			;;
	esac
}

addhostent() {
	# $1 - IP address
	# $2 - symbolic name

	# Create an entry in the hosts table.
	# If the IP address already exists, replace it.
	grep -v "^$1 " /etc/hosts > /tmp/hosts
	echo "$1 $2 $2.$FQDN"    >> /tmp/hosts

	# Use it now.
	cp /tmp/hosts /etc/hosts
}

addifconfig() {
	# $1 - interface name
	# $2 - interface symbolic name
	# $3 - interface IP address
	# $4 - interface netmask

	# Create a hostname.* file for the interface.
	echo "inet $2 $4" > /tmp/hostname.$1

	addhostent $3 $2
}

configurenetwork() {
	cat << \__configurenetwork_1

You may configure the following network interfaces:

__configurenetwork_1

	_IFS=`md_get_ifdevs`
	echo	$_IFS
	echo	""
	echo -n	"Configure which interface? [done] "
	getresp "done"
	case "$resp" in
		done)
			;;

		*)
			if isin $resp $_IFS ; then
				_interface_name=$resp

				# Keep in the list in case it's misconfigured
				# and the user want's to re-do it.

				# Get IP address
				resp=""		# force one iteration
				while [ "X${resp}" = X"" ]; do
					echo -n "IP address? "
					getresp ""
					_interface_ip=$resp
				done

				# Get symbolic name
				resp=""		# force one iteration
				while [ "X${resp}" = X"" ]; do
					echo -n "Symbolic (host) name? "
					getresp ""
					_interface_symname=$resp
				done

				# Get netmask
				resp=""		# force one iteration
				while [ "X${resp}" = X"" ]; do
					echo -n "Netmask? "
					getresp ""
					_interface_mask=$resp
				done

				# Configure the interface.  If it
				# succeeds, add it to the permanent
				# network configuration info.
				ifconfig ${_interface_name} down
				if ifconfig ${_interface_name} inet \
				    ${_interface_ip} \
				    netmask ${_interface_mask} up ; then
					addifconfig \
					    ${_interface_name} \
					    ${_interface_symname} \
					    ${_interface_ip} \
					    ${_interface_mask}
				fi
			else
				echo ""
				echo "The interface $resp does not exist."
			fi
			;;
	esac
}

install_ftp() {
	# Get several parameters from the user, and create
	# a shell script that directs the appropriate
	# commands into ftp.
	cat << \__install_ftp_1

This is an automated ftp-based installation process.  You will be asked
several questions.  The correct set of commands will be placed in a script
that will be fed to ftp(1).

__install_ftp_1
	# Get server IP address
	resp=""		# force one iteration
	while [ "X${resp}" = X"" ]; do
		echo -n "Server IP? [${_ftp_server_ip}] "
		getresp "${_ftp_server_ip}"
		_ftp_server_ip=$resp
	done

	# Get server directory
	resp=""		# force one iteration
	while [ "X${resp}" = X"" ]; do
		echo -n "Server directory? [${_ftp_server_dir}] "
		getresp "${_ftp_server_dir}"
		_ftp_server_dir=$resp
	done

	# Get login name
	resp=""		# force one iteration
	while [ "X${resp}" = X"" ]; do
		echo -n "Login? [${_ftp_server_login}] "
		getresp "${_ftp_server_login}"
		_ftp_server_login=$resp 
	done

	# Get password
	resp=""		# force one iteration
	while [ "X${resp}" = X"" ]; do
		echo -n "Password? [${_ftp_server_password}] "
		getresp "${_ftp_server_password}"
		_ftp_server_password=$resp
	done

	# Get list of files for mget.
	cat << \__install_ftp_2

You will now be asked for files to extract.  Enter one file at a time.
When you are done entering files, enter 'done'.

__install_ftp_2
	echo "#!/bin/sh" > /tmp/ftp-script.sh
	echo "cd /mnt" >> /tmp/ftp-script.sh
	echo "ftp -i -n $_ftp_server_ip << \__end_commands" >> \
	    /tmp/ftp-script.sh
	echo "user $_ftp_server_login $_ftp_server_password" >> \
	    /tmp/ftp-script.sh
	echo "bin" >> /tmp/ftp-script.sh
	echo "cd $_ftp_server_dir" >> /tmp/ftp-script.sh

	resp=""		# force one interation
	while [ "X${resp}" != X"done" ]; do
		echo -n "File? [done] "
		getresp "done"
		if [ "X${resp}" = X"done" ]; then
			break
		fi

		_ftp_file=`echo ${resp} | awk '{print $1}'`
		echo "get ${_ftp_file} |\"tar --unlink -zxvpf -\"" >> \
		    /tmp/ftp-script.sh
	done

	echo "quit" >> /tmp/ftp-script.sh
	echo "__end_commands" >> /tmp/ftp-script.sh

	sh /tmp/ftp-script.sh
	rm -f /tmp/ftp-script.sh
	echo "Extraction complete."
}

install_common_nfs_cdrom() {
	# $1 - directory containing file

	# Get the name of the file.
	resp=""		# force one iteration
	while [ "X${resp}" = X"" ]; do
		echo -n "File name? "
		getresp ""
	done
	_common_filename="/mnt2/$1/$resp"

	# Ensure file exists
	if [ ! -f $_common_filename ]; then
		echo "File $_common_filename does not exist.  Check to make"
		echo "sure you entered the information properly."
		return
	fi

	# Extract file
	cat $_common_filename | (cd /mnt; tar --unlink -zxvpf -)
	echo "Extraction complete."
}

install_cdrom() {
	# Get the cdrom device info
	cat << \__install_cdrom_1

The following CD-ROM devices are installed on your system; please select
the CD-ROM device containing the installation media:

__install_cdrom_1
	_CDDEVS=`md_get_cddevs`
	echo    "$_CDDEVS"
	echo	""
	echo -n	"Which is the CD-ROM with the installation media? [abort] "
	getresp "abort"
	case "$resp" in
		abort)
			echo "Aborting."
			return
			;;

		*)
			if isin $resp $_CDDEVS ; then
				_cdrom_drive=$resp
			else
				echo ""
				echo "The CD-ROM $resp does not exist."
				echo "Aborting."
				return
			fi
			;;
	esac

	# Get partition
	resp=""		# force one iteration
	while [ "X${resp}" = X"" ]; do
		echo -n "Partition? [c] "
		getresp "c"
		case "$resp" in
			[a-h])
				_cdrom_partition=$resp
				;;

			*)
				echo "Invalid response: $resp"
				resp=""		# force loop to repeat
				;;
		esac
	done

	# Ask for filesystem type
	cat << \__install_cdrom_2

There are two CD-ROM filesystem types currently supported by this program:
	1) ISO-9660 (cd9660)
	2) Berkeley Fast Filesystem (ffs)

__install_cdrom_2
	resp=""		# force one iteration
	while [ "X${resp}" = X"" ]; do
		echo -n "Which filesystem type? [cd9660] "
		getresp "cd9660"
		case "$resp" in
			cd9660|ffs)
				_cdrom_filesystem=$resp
				;;

			*)
				echo "Invalid response: $resp"
				resp=""		# force loop to repeat
				;;
		esac
	done

	# Mount the CD-ROM
	if ! mount -t ${_cdrom_filesystem} -o ro \
	    /dev/${_cdrom_drive}${_cdrom_partition} /mnt2 ; then
		echo "Cannot mount CD-ROM drive.  Aborting."
		return
	fi

	# Get the directory where the file lives
	resp=""		# force one iteration
	while [ "X${resp}" = X"" ]; do
		echo "Enter the directory relative to the mount point that"
		echo -n "contains the file. [${_cdrom_directory}] "
		getresp "${_cdrom_directory}"
	done
	_cdrom_directory=$resp

	install_common_nfs_cdrom ${_cdrom_directory}
	umount -f /mnt2 > /dev/null 2>&1
}

install_nfs() {
	# Get the IP address of the server
	resp=""		# force one iteration
	while [ "X${resp}" = X"" ]; do
		echo -n "Server IP address? [${_nfs_server_ip}] "
		getresp "${_nfs_server_ip}"
	done
	_nfs_server_ip=$resp

	# Get server path to mount
	resp=""		# force one iteration
	while [ "X${resp}" = X"" ]; do
		echo -n "Filesystem on server to mount? [${_nfs_server_path}] "
		getresp "${_nfs_server_path}"
	done
	_nfs_server_path=$resp

	# Determine use of TCP
	echo -n "Use TCP transport (only works with capable NFS server)? [n] "
	getresp "n"
	case "$resp" in
		y*|Y*)
			_nfs_tcp="-T"
			;;

		*)
			_nfs_tcp=""
			;;
	esac

	# Mount the server
	if ! mount_nfs $_nfs_tcp ${_nfs_server_ip}:${_nfs_server_path} \
	    /mnt2 ; then
		echo "Cannot mount NFS server.  Aborting."
		return
	fi

	# Get the directory where the file lives
	resp=""		# force one iteration
	while [ "X${resp}" = X"" ]; do
		echo "Enter the directory relative to the mount point that"
		echo -n "contains the file. [${_nfs_directory}] "
		getresp "${_nfs_directory}"
	done
	_nfs_directory=$resp

	install_common_nfs_cdrom ${_nfs_directory}
	umount -f /mnt2 > /dev/null 2>&1
}

install_tape() {
	# Get the name of the tape from the user.
	cat << \__install_tape_1

The installation program needs to know which tape device to use.  Make
sure you use a "no rewind on close" device.

__install_tape_1
	_tape=`basename $TAPE`
	resp=""		# force one iteration
	while [ "X${resp}" = X"" ]; do
		echo -n "Name of tape device? [${_tape}]"
		getresp "${_tape}"
	done
	_tape=`basename $resp`
	TAPE="/dev/${_tape}"
	if [ ! -c $TAPE ]; then
		echo "$TAPE does not exist or is not a character special file."
		echo "Aborting."
		return
	fi
	export TAPE

	# Rewind the tape device
	echo -n "Rewinding tape..."
	if ! mt rewind ; then
		echo "$TAPE may not be attached to the system or may not be"
		echo "a tape device.  Aborting."
		return
	fi
	echo "done."

	# Get the file number
	resp=""		# force one iteration
	while [ "X${resp}" = X"" ]; do
		echo -n "File number? "
		getresp ""
		case "$resp" in
			[1-9]*)
				_nskip=`expr $resp - 1`
				;;

			*)
				echo "Invalid file number ${resp}."
				resp=""		# fore loop to repeat
				;;
		esac
	done

	# Skip to correct file.
	echo -n "Skipping to source file..."
	if [ "X${_nskip}" != X"0" ]; then
		if ! mt fsf $_nskip ; then
			echo "Could not skip $_nskip files.  Aborting."
			return
		fi
	fi
	echo "done."

	cat << \__install_tape_2

There are 2 different ways the file can be stored on tape:

	1) an image of a gzipped tar file
	2) a standard tar image

__install_tape_2
	resp=""		# force one iteration
	while [ "X${resp}" = X"" ]; do
		getresp "1"
		case "$resp" in
			1)
				(
					cd /mnt
					dd if=$TAPE | tar --unlink -zxvpf -
				)
				;;

			2)
				(
					cd /mnt
					dd if=$TAPE | tar --unlink -xvpf -
				)
				;;

			*)
				echo "Invalid response: $resp."
				resp=""		# force loop to repeat
				;;
		esac
	done
	echo "Extraction complete."
}

get_timezone() {
cat << \__get_timezone_1

Select a time zone:

__get_timezone_1
	ls /mnt/usr/share/zoneinfo	# XXX
	echo	""
	if [ X"$TZ" = "X" ]; then
		TZ=`ls -l /etc/timezone 2>/dev/null | awk -F/ '{print $NF}'`
	fi
	echo -n "What timezone are you in [$TZ]? "
	getresp "$TZ"
	case "$resp" in
	"")
		echo "Timezone defaults to GMT"
		TZ="GMT"
		;;
	*)
		TZ="$resp"
		;;
	esac
	export TZ
}

#
# End of functions.
# Begin working
#

# Good {morning,afternoon,evening,night}.
md_welcome_banner
echo -n "Proceed with installation? [n] "
getresp "n"
case "$resp" in
	y*|Y*)
		echo	"Cool!  Let's get to it..."
		;;
	*)
		md_not_going_to_install
		exit
		;;
esac

# Make our root read/write (or at least parts of it).
md_remount

while [ "X${ROOTDISK}" = "X" ]; do
	getrootdisk
done

# Make sure there's a disklabel there.  If there isn't, puke after
# disklabel prints the error message.
md_checkfordisklabel ${ROOTDISK}
case "$resp" in
	1)
		cat << \__disklabel_not_present_1

FATAL ERROR: There is no disklabel present on the root disk!  You must
label the disk using the RAMDISK kernel before continuing.

__disklabel_not_present_1
		exit
		;;

	2)
		cat << \__disklabel_corrupted_1

FATAL ERROR: The disklabel on the root disk is corrupted!  You must
re-label the disk using the RAMDISK kernel before continuing.

__disklabel_corrupted_1
		exit
		;;

	*)
		;;
esac

# Give the user the opportinuty to edit the root disklabel.
cat << \__disklabel_notice_1

You have already placed a disklabel onto the target root disk.
However, due to the limitations of the standalone program used
you may want to edit that label to change partition type information.
You will be given the opporunity to do that now.  Note that you may
not change the size or location of any presently open partition.

__disklabel_notice_1
echo -n	"Do you wish to edit the root disklabel? [y] "
getresp "y"
case "$resp" in
	y*|Y*)
		disklabel -e ${ROOTDISK}
		;;

	*)
		;;
esac

cat << \__disklabel_notice_2

You will now be given the opportunity to place disklabels on any additional
disks on your system.
__disklabel_notice_2

_DKDEVS=`rmel ${ROOTDISK} ${_DKDEVS}`
resp="X"	# force at least one iteration
while [ "X$resp" != X"done" ]; do
	labelmoredisks
done

# Assume partition 'a' of $ROOTDISK is for the root filesystem.  Loop and
# get the rest.
# XXX ASSUMES THAT THE USER DOESN'T PROVIDE BOGUS INPUT.
cat << \__get_filesystems_1

You will now have the opportunity to enter filesystem information.
You will be prompted for device name and mount point (full path,
including the leading '/' character).

Note that these do not have to be in any particular order.  You will
be given the opportunity to edit the resulting 'fstab' file before
any of the filesystems are mounted.  At that time you will be able
to resolve any filesystem order dependencies.

__get_filesystems_1

echo	"The following will be used for the root filesystem:"
echo	"	${ROOTDISK}a	/"

echo	"${ROOTDISK}a	/" > ${FILESYSTEMS}

resp="X"	# force at least one iteration
while [ "X$resp" != X"done" ]; do
	echo	""
	echo -n	"Device name? [done] "
	getresp "done"
	case "$resp" in
		done)
			;;

		*)
			_device_name=`basename $resp`

			# force at least one iteration
			_first_char="X"
			while [ "X${_first_char}" != X"/" ]; do
				echo -n "Mount point? "
				getresp ""
				_mount_point=$resp
				if [ "X${_mount_point}" = X"/" ]; then
					# Invalid response; no multiple roots
					_first_char="X"
				else
					_first_char=`echo ${_mount_point} | \
					    cut -c 1`
				fi
			done
			echo "${_device_name}	${_mount_point}" >> \
			    ${FILESYSTEMS}
			resp="X"	# force loop to repeat
			;;
	esac
done

echo	""
echo	"You have configured the following devices and mount points:"
echo	""
cat ${FILESYSTEMS}
echo	""
echo	"Filesystems will now be created on these devices.  If you made any"
echo -n	"mistakes, you may edit this now.  Edit? [n] "
getresp "n"
case "$resp" in
	y*|Y*)
		vi ${FILESYSTEMS}
		;;
	*)
		;;
esac

# Loop though the file, place filesystems on each device.
while read dev mnt
do
	echo -n	"Create filesystem on $dev? [y] "
	getresp "n" < /dev/tty
	case "$resp" in
		y*|Y*)
			newfs /dev/r${dev}
			;;
		*)
			echo "skipped $dev"
			;;
	esac
done < ${FILESYSTEMS}

# Get network configuration information, and store it for placement in the
# root filesystem later.
cat << \__network_config_1
You will now be given the opportunity to configure the network.  This will
be useful if you need to transfer the installation sets via FTP or NFS.
Even if you choose not to transfer installation sets that way, this
information will be preserved and copied into the new root filesystem.

Note, enter all symbolic host names WITHOUT the domain name appended.
I.e. use 'hostname' NOT 'hostname.domain.name'.

__network_config_1
echo -n	"Configure the network? [y] "
getresp "y"
case "$resp" in
	y*|Y*)
		echo -n "Enter system hostname: "
		resp=""		# force at least one iteration
		while [ "X${resp}" = X"" ]; do
			getresp ""
		done
		hostname $resp
		echo $resp > /tmp/myname

		echo -n "Enter DNS domain name: "
		resp=""		# force at least one iteration
		while [ "X${resp}" = X"" ]; do
			getresp ""
		done
		FQDN=$resp

		resp=""		# force at least one iteration
		while [ "X${resp}" != X"done" ]; do
			configurenetwork
		done

		echo -n "Enter IP address of default route: [none] "
		getresp "none"
		if [ "X${resp}" != X"none" ]; then
			route delete default > /dev/null 2>&1
			if route add default $resp > /dev/null ; then
				echo $resp > /tmp/mygate
			fi
		fi

		echo -n	"Enter IP address of primary nameserver: [none] "
		getresp "none"
		if [ "X${resp}" != X"none" ]; then
			echo "domain $FQDN" > /tmp/resolv.conf
			echo "nameserver $resp" >> /tmp/resolv.conf
			echo "search $FQDN" >> /tmp/resolv.conf

			echo -n "Would you like to use the nameserver now? [y] "
			getresp "y"
			case "$resp" in
				y*|Y*)
					cp /tmp/resolv.conf \
					    /etc/resolv.conf
					;;

				*)
					;;
			esac
		fi

		echo ""
		echo "The host table is as follows:"
		echo ""
		cat /etc/hosts
		echo ""
		echo "You may want to edit the host table in the event that"
		echo "you need to mount an NFS server."
		echo -n "Would you like to edit the host table? [n] "
		getresp "n"
		case "$resp" in
			y*|Y*)
				vi /etc/hosts
				;;

			*)
				;;
		esac

		cat << \__network_config_2

You will now be given the opportunity to escape to the command shell to
do any additional network configuration you may need.  This may include
adding additional routes, if needed.  In addition, you might take this
opportunity to redo the default route in the event that it failed above.
If you do change the default route, and wish for that change to carry over
to the installed system, execute the following command at the shell
prompt:

	echo <ip_address_of_gateway> > /tmp/mygate

where <ip_address_of_gateway> is the IP address of the default router.

__network_config_2
		echo -n "Escape to shell? [n] "
		getresp "n"
		case "$resp" in
			y*|Y*)
				echo "Type 'exit' to return to install."
				sh
				;;

			*)
				;;
		esac
		;;
	*)
		;;
esac

# Now that the network has been configured, it is safe to configure the
# fstab.
awk '{
	if ($2 == "/")
		printf("/dev/%s %s ffs rw 1 1\n", $1, $2)
	else
		printf("/dev/%s %s ffs rw 1 2\n", $1, $2)
}' < ${FILESYSTEMS} > /tmp/fstab

echo	"The fstab is configured as follows:"
echo	""
cat /tmp/fstab
cat << \__fstab_config_1

You may wish to edit the fstab.  For example, you may need to resolve
dependencies in the order which the filesystems are mounted.  You may
also wish to take this opportunity to place NFS mounts in the fstab.
This would be especially useful if you plan to keep '/usr' on an NFS
server.

__fstab_config_1
echo -n	"Edit the fstab? [n] "
getresp "n"
case "$resp" in
	y*|Y*)
		vi /tmp/fstab
		;;

	*)
		;;
esac

# Now that the 'real' fstab is configured, create a temporary fstab
# which we'll use for mounting and unmounting all of the target
# filesystems relative to /mnt.  Save the original (our root).
[ -f /etc/fstab.save ] || cp /etc/fstab /etc/fstab.save
cp /etc/fstab.save /etc/fstab
awk '{
	if ($2 == "/")
		printf("%s /mnt %s %s %s %s\n", $1, $3, $4, $5, $6)
	else
		printf("%s /mnt%s %s %s %s %s\n", $1, $2, $3, $4, $5, $6)
}' < /tmp/fstab >> /etc/fstab

echo	""

# Must mount filesystems manually, one at a time, so we can make sure the
# mount points exist.
(
	while read _dev _mp _fstype _opt junk
	do
		# If not the root filesystem, make sure the mount
		# point is present.
		if [ "X${_mp}" != X"/mnt" ]; then
			mkdir -p $_mp
		fi

		# Mount the filesystem.  If the mount fails, exit
		# with an error condition to tell the outer
		# layer to bail.
		if ! mount -v -t $_fstype -o $_opt $_dev $_mp ; then
			# error message displayed by mount
			exit 1
		fi
	done
) < /etc/fstab

if [ "X${?}" != X"0" ]; then
	cat << \__mount_filesystems_1

FATAL ERROR:  Cannot mount filesystems.  Double-check your configuration
and restart the installation process.

__mount_filesystems_1
	exit
fi

# Ask the user which media to load the distribution from.
cat << \__install_sets_1

It is now time to extract the installation sets onto the disk.
Make sure The sets are either on a local device (i.e. tape, CD-ROM)
or on a network server.

__install_sets_1
if [ -f /base.tar.gz ]; then
	echo -n "Install from sets in the current root filesystem? [y] "
	getresp "y"
	case "$resp" in
		y*|Y*)
			for _f in /*.tar.gz; do
				echo -n "Install $_f ? [y]"
				getresp "y"
				case "$resp" in
				y*|Y*)
				     cat $_f | (cd /mnt; tar --unlink -zxvpf -)
					_yup="TRUE"
					;;
				*)
					;;
				esac
				echo "Extraction complete."
			done
			;;
		*)
			_yup="FALSE"
			;;
	esac
else
	_yup="FALSE"
fi

# Go on prodding for alternate locations
resp=""		# force at least one iteration
while [ "X${resp}" = X"" ]; do
	# If _yup is not FALSE, it means that we extracted sets above.
	# If that's the case, bypass the menu the first time.
	if [ X"$_yup" = X"FALSE" ]; then
		echo -n	"Install from (f)tp, (t)ape, (C)D-ROM, or (N)FS? [f] "
		getresp "f"
		case "$resp" in
			f*|F*)
				install_ftp
				;;

			t*|T*)
				install_tape
				;;

			c*|C*)
				install_cdrom
				;;

			n*|N*)
				install_nfs
				;;

			*)
				echo "Invalid response: $resp"
				resp=""
				;;
		esac
	else
		_yup="FALSE"	# So we'll ask next time
	fi

	# Give the user the opportunity to extract more sets.  They don't
	# necessarily have to come from the same media.
	echo	""
	echo -n	"Extract more sets? [n] "
	getresp "n"
	case "$resp" in
		y*|Y*)
			# Force loop to repeat
			resp=""
			;;

		*)
			;;
	esac
done

# Get timezone info
get_timezone

# Copy in configuration information and make devices in target root.
(
	cd /tmp
	cp /etc/hosts hosts
	for file in fstab hostname.* hosts myname mygate resolv.conf; do
		if [ -f $file ]; then
			echo -n "Copying $file..."
			cp $file /mnt/etc/$file
			echo "done."
		fi
	done

	echo -n "Installing timezone link..."
	rm -f /mnt/etc/localtime
	ln -s /usr/share/zoneinfo/$TZ /mnt/etc/localtime
	echo "done."

	echo -n "Making devices..."
	pid=`twiddle`
	cd /mnt/dev
	sh MAKEDEV all
	kill $pid
	echo "done."

	echo -n "Copying kernel..."
	cp /netbsd /mnt/netbsd
	echo "done."

	md_installboot ${ROOTDISK}
)

# Unmount all filesystems and check their integrity.
echo -n	"Syncing disks..."
pid=`twiddle`
sync; sleep 4; sync; sleep 2; sync; sleep 2
kill $pid
echo	"done."

echo "Unmounting filesystems..."
umount -va

echo "Checking filesystem integrity..."
fsck -pf

# Pat on the back.
md_congrats

# ALL DONE!
exit 0