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small install script fixes

#!/bin/sh
#	$OpenBSD: install.sh,v 1.3 1997/05/15 12:31:15 graichen Exp $
#	$NetBSD: install.sh,v 1.5.2.8 1996/08/27 18:15:05 gwr Exp $
#
# Copyright (c) 1996 The NetBSD Foundation, Inc.
# All rights reserved.
#
# This code is derived from software contributed to The NetBSD Foundation
# by Jason R. Thorpe.
#
# 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 by the NetBSD
#        Foundation, Inc. and its contributors.
# 4. Neither the name of The NetBSD Foundation nor the names of its
#    contributors may be used to endorse or promote products derived
#    from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
# ``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 REGENTS OR CONTRIBUTORS 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.
#

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

FILESYSTEMS="/tmp/filesystems"		# used thoughout
FQDN=""					# domain name

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

MODE="install"

# include machine-dependent functions
# The following functions must be provided:
#	md_copy_kernel()	- copy a kernel to the installed disk
#	md_get_diskdevs()	- return available disk devices
#	md_get_cddevs()		- return available CD-ROM devices
#	md_get_ifdevs()		- return available network interfaces
#	md_get_partition_range() - return range of valid partition letters
#	md_installboot()	- install boot-blocks on disk
#	md_labeldisk()		- put label on a disk
#	md_prep_disklabel()	- label the root disk
#	md_welcome_banner()	- display friendly message
#	md_not_going_to_install() - display friendly message
#	md_congrats()		- display friendly message
#	md_native_fstype()	- native filesystem type for disk installs
#	md_native_fsopts()	- native filesystem options for disk installs
#	md_makerootwritable()	- make root writable (at least /tmp)

# test if / is read write
echo "" > /tmp/test_read_write_root 2> /dev/null
if [ "X$?" != X"0" ]; then
	echo "Please mount your rootfilesystem read/write - for"
	echo "instance - if the disk you booted from is rz0 do"
	echo "the following:"
	echo ""
	echo "  mount /dev/rz0a /"
	echo ""
	echo "Then you can restart the installation"
	echo ""
	exit 0
else
       rm -f /tmp/test_read_write_root
fi

# include machine dependent subroutines
. ./install.md

# include common subroutines
. ./install.sub

# which sets?
THESETS="$ALLSETS $MDSETS"

if [ "`df /`" = "`df /mnt`" ]; then
	# Good {morning,afternoon,evening,night}.
	md_welcome_banner
	echo -n "Proceed with installation? [n] "
else
	echo "You seem to be trying to restart an interrupted installation!"
	echo ""
	echo "You can try to skip the disk preparation steps and continue,"
	echo "otherwise you should reboot the miniroot and start over..."
	echo -n "Skip disk initialization? [n] "
fi
getresp "n"
case "$resp" in
	y*|Y*)
		echo	""
		echo	"Cool!  Let's get to it..."
		;;
	*)
		md_not_going_to_install
		exit
		;;
esac

echo ""
echo "In case you install from an simpleroot image dd'ed onto a disk - do"
echo -n "you plan to install OpenBSD onto the same disk ? [n] "
getresp "n"
case "$resp" in
	y*|Y*)
		SIMPLEROOT=simpleroot
		;;
	*)
		SIMPLEROOT=
		;;
esac

# XXX Work around vnode aliasing bug (thanks for the tip, Chris...)
ls -l /dev > /dev/null 2>&1

# Deal with terminal issues
md_set_term

# Get timezone info
get_timezone

# Make sure we can write files (at least in /tmp)
# This might make an MFS mount on /tmp, or it may
# just re-mount the root with read-write enabled.
if [ "`df /`" = "`df /tmp`" ]; then
	md_makerootwritable
fi

if [ "`df /`" = "`df /mnt`" ]; then
# TTT
#	# Install the shadowed disktab file; lets us write to it for temporary
#	# purposes without mounting the miniroot read-write.
#	cp /etc/disktab /tmp/disktab.shadow

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

	if [ "X${SIMPLEROOT}" = X"simpleroot" ]; then
		SIMPLEROOTDISK=${ROOTDISK}a
		if [ ! -L /mnt ]; then
			( cd /; rmdir /mnt; ln -s / /mnt )
		fi
	else
		SIMPLEROOTDISK=NO_GOOD_GREPABLE_STRING
	fi

	# Deal with disklabels, including editing the root disklabel
	# and labeling additional disks.  This is machine-dependent since
	# some platforms may not be able to provide this functionality.
	md_prep_disklabel ${ROOTDISK}

	# 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 prepending '/' 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
				_first_char=`firstchar ${_mount_point}`
				if [ "X${_first_char}" != X"/" ]; then
					echo "mount point must be an absolute path!"
				fi
			done
			if [ "X${_mount_point}" = X"/" ]; then
				echo "root mount point already taken care of!"
			else
				echo "${_device_name} ${_mount_point}" \
					>> ${FILESYSTEMS}
			fi
			resp="X"	# force loop to repeat
			;;
		esac
	done

	echo	""
	echo	"You have configured the following devices and mount points:"
	echo	""
	cat ${FILESYSTEMS}
	echo	""
	echo	"Filesystems will now be created on these devices."
	echo -n	"If you made any mistakes, you may edit this now.  Edit? [n] "
	getresp "n"
	case "$resp" in
		y*|Y*)
			${EDITOR} ${FILESYSTEMS}
			;;
		*)
			;;
	esac
	echo 	""
	echo	 "The next step will overwrite any existing data on:"
	(
		echo -n "	"
		while read _device_name _junk; do
			echo -n "${_device_name} "
		done
		echo ""
	) < ${FILESYSTEMS}
	echo	""

	echo -n	"Are you really sure that you're ready to proceed? [n] "
	getresp "n"
	case "$resp" in
		y*|Y*)
			;;
		*)
			echo "ok, try again later..."
			exit
			;;
	esac

	# Loop though the file, place filesystems on each device.
	echo	"Creating filesystems..."
	cat ${FILESYSTEMS} | grep -v ${SIMPLEROOTDISK} | (
		while read _device_name _junk; do
			newfs /dev/r${_device_name}
			echo ""
		done
	)

	# TTT this should be done better
	if [ "X${SIMPLEROOT}" = X"simpleroot" ]; then
		USRDEVICE=`grep /usr$ ${FILESYSTEMS} | cut -d" " -f1`
		mkdir /tmp/mnt
		mount /dev/${USRDEVICE} /tmp/mnt
		echo -n "Copying the old /usr directory to the new location ..."
		( cd /usr; tar cf - * ) | ( cd /tmp/mnt; tar xpf - )
		echo " done."
		umount /tmp/mnt
		rmdir /tmp/mnt
	fi
fi

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

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

		configurenetwork

		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 \
					    /tmp/resolv.conf.shadow
					;;

				*)
					;;
			esac
		fi

		echo ""
		echo "The host table is as follows:"
		echo ""
		cat /tmp/hosts
		echo ""
		echo "You may want to edit the host table in the event that"
		echo "you are doing an NFS installation or an FTP installation"
		echo "without a name server and want to refer to the server by"
		echo "name rather than by its numeric ip address."
		echo -n "Would you like to edit the host table? [n] "
		getresp "n"
		case "$resp" in
			y*|Y*)
				${EDITOR} /tmp/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

if [ "`df /`" = "`df /mnt`" ]; then
	# Now that the network has been configured, it is safe to configure the
	# fstab.
	(
		while read _dev _mp; do
			if [ "$mp" = "/" ]; then
				echo /dev/$_dev $_mp ffs rw 1 1
			else
				echo /dev/$_dev $_mp ffs rw 1 2
			fi
		done
	) < ${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*)
			${EDITOR} /tmp/fstab
			;;

		*)
			;;
	esac

	echo ""
	munge_fstab /tmp/fstab /tmp/fstab.shadow
	mount_fs /tmp/fstab.shadow
fi

mount | while read line; do
	set -- $line
	if [ "$2" = "/" -a "$3" = "nfs" ]; then
		echo "You appear to be running diskless."
		echo -n	"Are the install sets on one of your currently mounted filesystems? [n] "
		getresp "n"
		case "$resp" in
			y*|Y*)
				get_localdir
				;;
			*)
				;;
		esac
	fi
done

install_sets $THESETS

# Copy in configuration information and make devices in target root.

if [ ! -d /mnt/etc -o ! -d /mnt/usr/share/zoneinfo -o ! -d /mnt/dev ]; then
	echo "Something needed to complete the installation seems"
	echo "to be missing, did you forget to extract a required set?"
	echo ""
	echo "Please review the installation notes and try again..."
	echo ""
	echo "You *may* be able to correct the problem and type 'install'"
	echo "without having to extract all of the distribution sets again."
	exit
fi

cd /tmp
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

# If no zoneinfo on the installfs, give them a second chance
# TTT if [ ! -e /usr/share/zoneinfo ]; then
	get_timezone
# TTT fi
if [ ! -e /mnt/usr/share/zoneinfo ]; then
	echo "Cannot install timezone link..."
else
	echo -n "Installing timezone link..."
	rm -f /mnt/etc/localtime
	ln -s /usr/share/zoneinfo/$TZ /mnt/etc/localtime
	echo "done."
fi


if [ "X${SIMPLEROOT}" != X"simpleroot" ]; then

	md_copy_kernel

	md_installboot ${ROOTDISK}

	if [ ! -x /mnt/dev/MAKEDEV ]; then
		echo "No /dev/MAKEDEV installed, something is wrong here..."
		exit
	fi

	echo -n "Making all devices..."
	cd /mnt/dev
	sh MAKEDEV all
	echo "done."
	cd /
else
	echo ""
	echo "Removing files from the simpleroot which do not belong"
	echo "to the installed sets."
	echo ""
	echo -n "Did you install the comp${VERSION} set ? [y] "
	getresp "n"
	case "$resp" in
		n*|N*)
			rm -f /sys /var/db/libc.tags
			;;
		*)
			;;
	esac
	echo -n "Did you install the game${VERSION} set ? [y] "
	getresp "n"
	case "$resp" in
		n*|N*)
			rm -rf /var/games
			;;
		*)
			;;
	esac
fi

umount /kern
rmdir /kern
rmdir /mnt2

unmount_fs /tmp/fstab.shadow

if [ "X${SIMPLEROOT}" = X"simpleroot" ]; then
	rm -f /mnt; mkdir /mnt
fi

# Pat on the back.
md_congrats

# ALL DONE!
exit 0