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

	rootsize=`stat -size rootimage`
	usrsize=`stat -size 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 -m tmpimage /usr/mdec/masterboot
	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 -m hdimage /usr/mdec/masterboot
}

retrieve()
{
	dir=$1
	list=`pwd`/$2
	url=${PACKAGEURL}
	(	
		cd $dir || exit 1
		echo  " * Updating $dir
   from $url
   with $list"
		files=`awk <$list '{ print "'$url'/" $1 ".tgz" }'`
		fetch -r $files || true
	)
}

cd_root_changes()
{
	edparams $TMPDISKROOT 'unset bootopts;
unset servers;
unset rootdev;
unset leader;
unset image;
disable=inet;
bootcd=1;
cdproberoot=1;
ata_id_timeout=2;
bootbig(1, Regular MINIX 3) { unset image; boot }
leader() { echo \n--- Welcome to MINIX 3. This is the boot monitor. ---\n\nChoose an option from the menu or press ESC if you need to do anything special.\nOtherwise I will boot with my defaults in 10 seconds.\n\n }; main(){trap 10000 boot; menu; };
save' 
}

hdemu_root_changes()
{
	$RELEASEDIR/usr/bin/installboot -d $TMPDISKROOT \
		$RELEASEDIR/usr/mdec/bootblock boot/boot
	echo \
'bootcd=2
disable=inet
bios_wini=yes
bios_remap_first=1
ramimagedev=c0d7p0s0
bootbig(1, Regular MINIX 3) { image=/boot/image_big; boot }
main() { trap 10000 boot ; menu; }
save'	| $RELEASEDIR/usr/bin/edparams $TMPDISKROOT
}

usb_root_changes()
{
	$RELEASEDIR/usr/bin/installboot -d $TMPDISKROOT \
		$RELEASEDIR/usr/mdec/bootblock boot/boot
	echo \
'bios_wini=yes
bios_remap_first=1
rootdev=c0d7p0s0
bootbig(1, Regular MINIX 3) { image=/boot/image_big; boot }
leader() { echo \n--- Welcome to MINIX 3. This is the boot monitor. ---\n\nChoose an option from the menu or press ESC if you need to do anything special.\nOtherwise I will boot with my defaults in 10 seconds.\n\n }; main(){trap 10000 boot; menu; };
save'	| $RELEASEDIR/usr/bin/edparams $TMPDISKROOT
}

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 p in `cat $PACKAGELIST`
	        do	if [ -f $PACKAGEDIR/All/$p.tgz ]
	               then
			  # Copy package and create package's index
			  (
			      cd $PACKAGEDIR/All
			      cp $p.tgz $RELEASEPACKAGE/
	
			      f=$p.tgz
			      indexname=$indexpath/$f.$index
			      pkg_info -X $f >$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 copy $PACKAGEDIR/$p.tgz. 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 -Fs $path | cut -d'	' -f1`
	zonekbsignore=0
	[ ! -d $path/usr ] || zonekbsignore=`du -Fs $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
}