#!/bin/rc

# create, wipe bootable device

fn logprog{ 
        echo $"*
        $*
} 

fn bootfat{
	dev=$1
	cd /sys/src/boot/pc && mk 9bootfat mbr pbs
	disk/mbr -m mbr $dev/data
	echo
	echo 'This is dev/fdisk; use it to create a FAT32 partition.'
	echo 'When finished, type ''w'' and then ''q''.'
	echo
	disk/fdisk -b $dev/data
	disk/format -b pbs -d -r 2 $dev/dos
	s=sdos
	n=/n/dos
	dossrv -f $dev/dos $s
	mount -c /srv/$s $n
		{
		echo 'bootfile=/'$"cputype'/9pcf'
		echo 'mouseport=ask'
		echo 'monitor=ask'
		echo 'vgasize=ask'
	} >$n/plan9.ini
	logprog cp /$cputype/9bootfat $n
	logprog mkdir $n/$cputype
	logprog cp /$cputype/9pcf $n/$cputype
	unmount $n
	rm -f /srv/$s
}

fn wipe{
	dev=$1
	echo 'awk ''/^part/{if($2!="data"){print "delpart "$2}}'' '$"dev'/ctl >'$"dev'/ctl'
	awk '/^part/{if($2!="data"){print "delpart "$2}}' $dev/ctl >$dev/ctl
	logprog dd -if /dev/zero -of $dev/data -bs 51dev -count 4
}

fn usage{
	echo usage: $0 [ -b device ] [ -w device ] >[1=2]
	exit usage
}

if(! ~ $1 -* || ~ $#2 0)
	usage

switch($1){
case -b
	wipe $2
	bootfat $2
case -w
	wipe $2
case *
	usage
}