#!/bin/rc # desc: create a boot floppy or configure hard disk to boot plan 9# prereq: copydist switch($1) {case go	echo	echo 'Initializing Plan 9 FAT configuration partition (9fat)'	echo		fat=(/dev/sd*/9fat)	fat=$fat(1)	disk=`{echo $fat | sed 's:/dev/::;s:/9fat::'}	bootfs=`{echo $fs | sed 's:/dev/(sd..)/(.*):\1!\2:'}	bootfat=`{echo $fs | sed 's:/dev/(sd..)/(.*):\1!9fat:'}	if(! test -f /dev/$disk/9fat) {		echo 'You have no 9fat partition.  Can''t setup booting.'		exit	} 	if(! test -f /tmp/plan9.ini) {		{			sfs=`{echo $fs | sed 's;/dev;#S;'}			if(~ $fstype fossil fossil+venti){				echo bootfile'='$bootfat!9pcf				echo 'bootargs=local!'^$sfs				echo 'bootdisk=local!'^$sfs			}			if not {				echo bootfile'='$bootfs!/386/9pcdisk				echo 'bootdisk=local!'^$sfs			}			if(~ $fstype fossil+venti){				venti=`{echo $ventiarena | sed 's;/dev;#S;'}				echo venti'='^$venti			}			# sort -u avoids dups which could otherwise trigger			# pointless boot menus.			grep -v '(^\[)|menuitem|adisk|bootfile|bootdisk|bootargs|nobootprompt|mouseport|vgasize|monitor|cdboot' /tmp/plan9.orig |				sort -u			echo 'mouseport='^$mouseport			echo 'monitor='^$monitor			echo 'vgasize='^$vgasize		} >/tmp/plan9.ini	}	if(! test -f /tmp/plan9ini.bak)		cp /tmp/plan9.ini /tmp/plan9ini.bak 	need9fatformat=no	if(! isfat /dev/$disk/9fat)		need9fatformat=yes	if not if(! mount -c /srv/dos /n/9fat /dev/$disk/9fat >[2]/dev/null)		need9fatformat=yes	if not if(! test -f /n/9fat/plan9.ini)		need9fatformat=yes 	if (test -e  /n/newfs/386/9loadnousb)		bind /n/newfs/386/9loadnousb /n/newfs/386/9load	# cater to old bioses	if(~ $need9fatformat yes){		log Initializing Plan 9 FAT partition.		disk/format -r 2 -d -b /386/pbs \			/dev/$disk/9fat /n/newfs/386/9load		# silently install pbslba if the partition is way into the disk.		# it''s our only hope.  only need this for >8.5GB into the disk.		# but...		# there are so few non-LBA bioses out		# there anymore that we'll do this even if we're only 2GB into		# the disk.  it's just not worth the headaches of dealing with		# crappy bioses that don't address the whole 8.5GB properly 		9fatoffset=`{grep '^part 9fat ' /dev/$disk/ctl | awk '{print $4}'}		if(! ~ $#9fatoffset 1) {			echo 'could not find plan 9 partition.'			echo 'cannot happen'			exit bad		}		if(test $9fatoffset -gt 2097152)	# 2GB			disk/format -b /386/pbslba /dev/$disk/9fat 		mount -c /srv/dos /n/9fat /dev/$disk/9fat	} 	if(! test -f /n/9fat/4e){		logprog cp /n/newfs/386/9load /n/9fat/9load		logprog cp /n/newfs/386/9pcf /n/9fat/9pcf		if(test -f /n/9fat/plan9.ini && ! test -f /n/9fat/plan9-3e.ini)			logprog mv /n/9fat/plan9.ini /n/9fat/plan9-3e.ini		if(test -f /n/9fat/9pcdisk && ! test -f /n/9fat/9pc3e)			logprog mv /n/9fat/9pcdisk /n/9fat/9pc3e 		awk -f /bin/inst/mkini.awk >/n/9fat/plan9.ini		>/n/9fat/4e	} 	echo	echo 'There are myriad ways to boot a Plan 9 system.'	echo 'You can use any of the following.'	echo	echo '  floppy - create a boot floppy'	echo '  plan9  - make the plan 9 disk partition the default for booting'	echo '  win9x  - add a plan 9 option to windows 9x boot menu'	echo '  winnt  - add a plan 9 option to windows nt/2000/xp boot manager'	echo	echo 'If you are upgrading an extant third edition installation and booting'	echo 'from something other than a floppy, you needn''t run anything here.'	echo 'Just type ctl-d.' 	oldbootsetup=$didbootsetup	didbootsetup=1	export didbootsetup	prompt 'Enable boot method' floppy plan9 win9x winnt		if(! boot$rd){		didbootsetup=$oldbootsetup		export didbootsetup	} case checkdone	xxxfat=(/dev/sd*/9fat)	if(! isfat $xxxfat(1) || ! ~ $didbootsetup 1){		bootsetup=ready		export bootsetup	}}