kern/kfs/ifconfig

#!/bin/ash

NIC='0'
MAC=`cat "#ether/ether$NIC/addr"`

export cputype=amd64
export objtype=$cputype
export service=cpu
export authid=bootes
export rootdir=/root
export rootspec=''
export rootsrv=boot

if [ -f /etc/network/default ]
then
	source /etc/network/default
else
	echo '/etc/network/default not found'
fi

if [ -f /etc/network/local ]
then
	source /etc/network/local
else
	echo '/etc/network/local not found'
fi

if [ -d /etc/network/local.d ]
then
	for cfg in /etc/network/local.d/*
	do
		source $cfg
	done
else
	echo '/etc/network/local.d not found'
fi

#
# Set up the initial namespace for starting networking.
#
/bin/bind -b '#cons' /dev
/bin/bind -b '#random' /dev
#/bin/bind '#d' /fd
#/bin/bind -c '#e' /env
/bin/bind -b '#proc' /proc
/bin/bind -b '#srv' /srv

#
# Configure the network mount point.
#
/bin/bind -a '#ip' /net
/bin/bind -a '#ether'.$NIC /net

if [ -x /bin/ipconfig ]
then
	if [ ! -z "$me" ]
	then
		ipconfig -g $route ether /net/ether$NIC $me $mask
	else
		# No explicit configuration; use DHCP.
		ipconfig ether /net/ether$NIC
	fi
	ipconfig loopback /dev/null 127.0.0.1
else
	if [ -z "$me" ]
	then
		# By default, configure for QEMU.
		me='10.0.2.15'
		mask='255.255.255.0'
		remote='10.0.2.0'
		route='10.0.2.2'
	fi
	#
	# Get an instance of an IP stack and bind ether$NIC to it.
	# The kernel sets errno but 'echo' doesn't return any sort of
	# error indicator.  Our busybox hacks doesn't know any better
	# and will think it was an error so direct stderr to /dev/null.
	#
	i=`cat /net/ipifc/clone`
	echo "bind ether /net/ether$NIC" >/net/ipifc/$i/ctl 2>/dev/null
	#
	# Configure the stack.
	#
	echo "add $me $mask $remote" > /net/ipifc/$i/ctl
	echo "add 0 0 $route" > /net/iproute
	echo "I am $me, default route $route"
	#
	# Configure the loopback interface.
	#
	i=`cat /net/ipifc/clone`
	echo 'bind loopback /dev/null' > /net/ipifc/$i/ctl
	echo 'add 127.0.0.1 255.0.0.0 127.0.0.0' > /net/ipifc/$i/ctl
fi

#
# Start cs (the name resolution server) and wait for it to post a
# file descriptor in #srv, then mount it in /net.
#
cs &
if [ ! -e '#srv/cs' ]
then
	echo 'cs has not created #srv/cs yet, spinning until it does....'
	until [ -e '#srv/cs' ]
	do
		usleep 1000
	done
fi
mount -a '#srv/cs' /net

# This is noisy, so it is off by default.
#echo debug > /net/cs

/bin/bind -a '#kprof' /prof

echo 'ifconfig complete'