Up to now, we don't have to set up any clients for
using our SEGA Dreamcast as gateway or
as nameserver. But we have to set up the gaming console
itself with the given nameserver in /etc/resolv.conf
and in /usr/yaku-ns/yaku-ns.conf. In this
section, we'll modify some scripts to let the
SEGA Dreamcast do this job.
The first file is /usr/yaku-ns/yaku-ns.conf.in:
# cd .. # cd usr/yaku-ns # cat <<. >yaku-ns.conf.in acl dns.allow 192.168.1. acl dns.deny $ nameserver __NAMESERVER__ . # chmod 644 yaku-ns.conf.in
As you see, we've change the real nameserver address with
a wildcard. Now, we have to edit /usr/sbin/adsl-connect
for filling up this wildcard. Please add the following lines
directly after
echo "$!" > $PPPD_PIDFILE
in the while loop:
.
.
.
# Dynmaic nameserver implementation
# Read given nameserver
head -n1 /etc/ppp/resolv.conf | \
sed s/nameserver\ // > /tmp/nameserver 2> /dev/null
NAMESERVER=`cat /tmp/nameserver`
# Ensure, $NAMESERVER is non-zero for
# avoiding to kill the nameserver
if [ ! -z $NAMESERVER ]; then
# Alter yaku-ns configuration
cat /usr/yaku-ns/yaku-ns.conf.in | \
sed s/__NAMESERVER__/$NAMESERVER/ > \
/usr/yaku-ns/yaku-ns.conf
# Exist a yaku-ns process?
pidof yaku-ns 2>&1 > /dev/null
if [ "$?" == "0" ]; then
# Inform yaku-ns of the
# configuration change.
kill -SIGHUP `pidof yaku-ns`
else
# yaku-ns process doesn't exist.
# So, we have to restart the nameserver.
/usr/yaku-ns/yaku-ns -c \
/usr/yaku-ns/yaku-ns.conf \
-l /usr/yaku-ns/yaku-ns.log \
-u yaku -d
fi
fi
rm -f /tmp/nameserver
.
.
.
This script fragment reads the first given nameserver and replaces the wildcard in the configuration of yaku-ns. Finally, it sends a signal to the yaku-ns process forcing the local nameserver to re-read its configuration.
For testing your installation, you can create and transfer a new image file for your SEGA Dreamcast using cook.sh. Please refer to chapter four and chapter two.