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WebSVN – planix.SVN – Blame – /os/branches/planix-v0/rc/bin/pc/bootplan9 – Rev 2

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#!/bin/rc
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rfork e
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. /rc/bin/pc/defs
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if(! ~ $#* 1) {
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	echo 'usage: bootplan9 /dev/sdC0' >[1=2]
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	echo 'sets active the plan 9 partition on the named disk.' >[1=2]
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	exit usage
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}
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disk=$1
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fn x {
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	if(! test -f $disk/$1) {
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		echo 'could not find '$disk/$1
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		exit disk
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	}
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}
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x plan9
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x data
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x ctl
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diskbase=`{basename `{cleanname $disk}}
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first=`{ls -p '#S' | sed 1q}
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if(! ~ $first $diskbase) {
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	echo 'warning: The plan 9 partition is not on the boot disk,' >[1=2]
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	echo 'so making it the active partition will have no effect.' >[1=2]
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}
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p9offset=`{disk/fdisk -p $disk/data |grep '^part plan9 ' | awk '{print $4}'}
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if(! ~ $#p9offset 1) {
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	echo 'could not find plan 9 partition.' >[1=2]
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	echo 'cannot happen' >[1=2]
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	exit bad
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}
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if(test $p9offset -gt 4128705) {	# 65536 * 63
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	echo  >[1=2]
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	echo 'Your Plan 9 partition is more than 2GB into your disk,' >[1=2]
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	echo 'and the master boot records used by most operating systems' >[1=2]
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	echo 'cannot access it (and thus cannot boot it).' >[1=2]
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	echo >[1=2]
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	echo 'Would you like to install a master boot record' >[1=2]
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	echo 'that will be able to access partitions more than 2GB into the disk?' >[1=2]
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	echo >[1=2]
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	prompt 'Install a new mbr' y n
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	switch($rd) {
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	case n
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		echo >[1=2]
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		echo 'Not setting Plan 9 partition active, then.' >[1=2]
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		echo >[1=2]
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		exit bad
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	case y
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		disk/mbr -m /386/mbr $disk/data
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	}
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}
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p9part=`{disk/fdisk $disk/data >[2]/dev/null </dev/null |
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		grep PLAN9 | sed 1q | sed 's/ *(p.) .*/\1/'}
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if(~ $#p9part 1) {
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	{ echo 'A '^$p9part; echo w } | disk/fdisk $disk/data >[2]/dev/null >/dev/null
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}
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if not {
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	echo 'Could not find Plan 9 partition.'
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	exit notdone
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}
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exit