plan9fox/sys/src/9/boot/bootrc

# TODO
# settime
# handle rootspec
# handle rootdir
# clean rc environment before running init(8)
# kfs
# caching

rfork e
# boot methods
mlocal = (configlocal connectlocal)
mtcp = (configtcp connecttcp)
mtab = (mlocal mtcp)
config=1
connect=2
bootargs=()

. /rc/lib/conf.rc
. /rc/lib/menu.rc
. /rc/lib/local.rc
. /rc/lib/tcp.rc

cputype=`{cat '#e'/cputype}

fn fatal {
	echo $*
	exit $"*
}

fn must {
	$* || fatal $"*^': '^$status
}


fn usbinit{
	if(test -f '#u'){
		bind -a '#u' /dev
		# TODO: check access to /dev/usb
		must usbd
	}
}

fn kbmap{
	if(! ~ $#kbmap 0){
		bind -a '#κ' /dev
		cat $kbmap > /dev/kbmap
	}
}

fn readmethod{
	resp=()
	timeo=5
	found=0

	echo
	echo Storage devices
	for(i in /dev/sd??){
		echo -n local!^$i'	'
		echo `{sed 's/inquiry[ ]+//g; q' $i/ctl}\
			partitions: `{cat $i/ctl | grep part | awk '{print $2}'}
	}

	while(~ $found 0){
		if(~ $#pcload 0)
			echo -n 'root is from: '
		if not
			echo -n 'kernel is at: '

		while(~ $#resp 0){
			resp=`{read}
			if(! ~ $status ''){
				bootconf	# set configuration from file
				if(! ~ $#nobootprompt 0)
					bootargs=$nobootprompt
				resp=$bootargs
			}
			if(~ $resp !rc)
				rc
			timeo=0
		}

		method=`{echo $resp | awk -F! '{print $1}'}
		NF=`{echo $resp | awk -F! '{print NF}'}

		for(i in `{seq 1 $#mtab}){
			if(~ $mtab($i) m^$method)
				found = $i 
		}

	 	if(~ $found 0){
			echo method $method not found
			resp=()
		}
	}

	methodarg = `{echo $resp | sed 's/^[A-Za-z]+!(.*)$/\1/'}
	mp = $$mtab($found)
}

fn authentication{
	# in pcload we only need to read the kernel
	if(~ $pcload 1)
		user=none

	if(! test -x /boot/factotum){
		if(~ $#user 0)
			user=glenda
		echo -n $user > '#c'/hostowner
	}
	
	if not{
		x=(/boot/factotum -u -sfactotum)
		if(~ $cpuflag 1)
			x=($x -S)
		if(! ~ $#authaddr 0)
			x=($x -a $authaddr)
		if(! ~ $#debugfactotum 0)
			x=($x -p)

		must $x
	}
}

fn swapproc{
	if(test -x '#c'/swap)
		echo -n start > '#c'/swap
}

usbinit		# set up usb keyboard, mouse, and disk, if any
kbmap

configlocal	# add partitions and binds

readmethod
$mp($config)

switch($method){
case local
	islocal=1
case hybrid
	ishybrid=1
}

# authentication agent
authentication

# connect to the root file system
$mp($connect)

swapproc

mount -c '#s/boot' /root

# remove part of our temporary root
unmount /$cputype/bin /bin
/mnt/broot/$cputype/bin/unmount /rc/bin /bin
/mnt/broot/$cputype/bin/unmount /boot /bin
/mnt/broot/$cputype/bin/unmount /

if(~ $pcload 1)
	/boot/echo reboot /root/$kern >/dev/reboot

# create the name space, mount the root fs
/mnt/broot/$cputype/bin/bind / /
/mnt/broot/$cputype/bin/mount -ac '#s/boot' /

# remove the remaining temporary root
/mnt/broot/$cputype/bin/unmount /mnt/broot

rootdir=/root

if(~ $#init 0){
	init=/$cputype/init
	if(~ $cpuflag 1)
		init=($init -c)
	if not
		init=($init -t)
	# TODO handle mflag
}

$init