make_hdimage()
{
	dd if=$TMPDISKUSR of=usrimage bs=$BS count=$USRBLOCKS

	rootsize=`stat -f %z rootimage`
	usrsize=`stat -f %z usrimage`

	rootsects=`expr $rootsize / 512`
	usrsects=`expr $usrsize / 512`

	# installboot -m needs at least 1KB 
	dd < /dev/zero >tmpimage count=2
	partition -fm tmpimage 2 81:$rootsects* 0:0 81:$usrsects
	installboot_nbsd -m tmpimage /usr/mdec/mbr
	dd < tmpimage > subpart count=1

	primsects=`expr 1 + $rootsects + $usrsects`
	cyl=`expr '(' $primsects ')' / $secs + 1`
	padsects=`expr $cyl \* $secs - 1 - $primsects`

	{ dd < /dev/zero count=1
		cat subpart
		cat rootimage
		cat usrimage
		dd < /dev/zero count=$padsects
	} > hdimage
	partition -m hdimage 81:`expr $primsects + $padsects`*
	installboot_nbsd -m hdimage /usr/mdec/mbr
}

retrieve()
{
	dir=$1
	list=`pwd`/$2
	URLS=""
	echo "Retrieving packages form $PACKAGEURL"
	(
	cd $dir || exit 1
	SUMMARY=pkg_summary
	rm -f pkg_summary* || true
	fetch $PACKAGEURL/$SUMMARY.bz2
	bzip2 -d $SUMMARY.bz2
	cat $list | while read name
	do	pkgname="`fgrep PKGNAME=${name} $SUMMARY | sed 's/PKGNAME=//g'`"
		if [ `echo $pkgname | wc -w` -ne 1 ]
		then	echo " *** Could not resolve $name (not found or too many matches: $pkgname) ***"
		else	echo Getting $pkgname
			fetch -r ${PACKAGEURL}/${pkgname}.tgz
		fi
		echo -n "."
	done
	)
	echo done
}

cd_root_changes()
{
cat >$CDFILES/boot.cfg <<END_BOOT_CFG
banner=Welcome to the MINIX 3 installation CD
banner================================================================================
banner=
menu=Regular MINIX 3:multiboot /kernel bootcd=1 cdproberoot=1 rootdevname=ram disable=inet
menu=Regular MINIX 3 (with AHCI):multiboot /kernel bootcd=1 cdproberoot=1 rootdevname=ram disable=inet ahci=yes
menu=Edit menu option:edit
menu=Drop to boot prompt:prompt
clear=1
timeout=10
default=1
load=/mod01_ds
load=/mod02_rs
load=/mod03_pm
load=/mod04_sched
load=/mod05_vfs
load=/mod06_memory
load=/mod07_tty
load=/mod08_mfs
load=/mod09_vm
load=/mod10_pfs
load=/mod11_init
# This space intentionally left blank - leave to appease bootloader!
# This space intentionally left blank - leave to appease bootloader!
# This space intentionally left blank - leave to appease bootloader!
# This space intentionally left blank - leave to appease bootloader!
# This space intentionally left blank - leave to appease bootloader!
# This space intentionally left blank - leave to appease bootloader!
# This space intentionally left blank - leave to appease bootloader!
# This space intentionally left blank - leave to appease bootloader!
# This space intentionally left blank - leave to appease bootloader!
# This space intentionally left blank - leave to appease bootloader!
# This space intentionally left blank - leave to appease bootloader!
# This space intentionally left blank - leave to appease bootloader!
# This space intentionally left blank - leave to appease bootloader!
# This space intentionally left blank - leave to appease bootloader!
# This space intentionally left blank - leave to appease bootloader!
# This space intentionally left blank - leave to appease bootloader!
# This space intentionally left blank - leave to appease bootloader!
# This space intentionally left blank - leave to appease bootloader!
END_BOOT_CFG
}

copy_local_packages()
{
	if [ -d $PACKAGEDIR -a -f $PACKAGELIST -a $PACKAGES -ne 0 ]
	then
		index=pkg_summary
		indexpath=$PACKAGEDIR/.index
	
		if [ ! -d $indexpath ]
		then	mkdir $indexpath
		fi
		if [ ! -d $indexpath ]
		then	echo "Couldn't create $indexpath."
			exit 1
		fi
	
		echo "" >$PACKAGEDIR/All/$index
	
	        echo " * Transfering $PACKAGEDIR to $RELEASEPACKAGE"
	        for pkgprefix in `cat $PACKAGELIST`
	        do	realfn="`echo $PACKAGEDIR/All/${pkgprefix}*.tgz`"
			if [ -f "$realfn" ]
	               then
			  # Copy package and create package's index
			  (
			      p="`basename $realfn`"
			      cd $PACKAGEDIR/All
			      cp $p $RELEASEPACKAGE/
	
			      indexname=$indexpath/$p.$index
			      pkg_info -X $p >$indexname
	
			      if [ ! -f $indexname ]
			      then	echo Missing $indexname.
				  exit 1
			      fi
	
			      if [ "`wc -l $indexname`" -lt 3 ]
			      then	$indexname is too short.
				  rm $indexname
				  exit 1
			      fi
	
			      cat $indexname >>$PACKAGEDIR/All/$index
			  )
	               else
	                  echo "Can't find $pkgprefix Missing."
	               fi
	        done
	
		bzip2 -f $PACKAGEDIR/All/$index
		cp $PACKAGEDIR/All/$index.bz2 $RELEASEPACKAGE/
	fi
}

fitfs()
{
	path="$1"
	ramdisk="$2"
	extra_inodes="$3"
	extra_zones="$4"
	mbsdefault="$5"

	# Determine number of inodes
	inodes=`find $path | egrep -v ^$path/usr | wc -l`
	inodes="`expr $inodes + $extra_inodes`"

	# Determine number of data zones
	zonekbs=`du -ks $path | cut -d'	' -f1`
	zonekbsignore=0
	[ ! -d $path/usr ] || zonekbsignore=`du -ks $path/usr | cut -d"	" -f1`
	zones="`expr \( $zonekbs - $zonekbsignore \) / \( $BS / 1024 \) + $extra_zones`"

	# Determine file system size
	BSBITS="`expr $BS \* 8`"
	imap_blocks="`expr \( $inodes + $BSBITS - 1 \) / $BSBITS`"
	inode_blocks="`expr \( $inodes \* 64 + $BS - 1 \) / $BS`"
	zmap_blocks="`expr \( $zones + $BSBITS - 1 \) / $BSBITS`"
	blocks="`expr 1 + 1 + $imap_blocks + $zmap_blocks + $inode_blocks + $zones`"
	kbs="`expr $blocks \* \( $BS / 1024 \)`"

	# Apply default if higher
	if [ -n "$mbsdefault" ]
	then
		kbsdefault="`expr $mbsdefault \* 1024`"
		if [ "$kbs" -lt "$kbsdefault" ]
		then kbs=$kbsdefault
		else echo "warning: ${mbsdefault}mb is too small, using ${kbs}kb"
		fi
	fi

	# Create a filesystem on the target ramdisk
	ramdisk $kbs $ramdisk
	mkfs.mfs -B $BS -i $inodes $ramdisk
}