Prepare NetBSD rootfs for Linksys NSLU2

#!/bin/sh

set -e

if [ $(id -u) -ne 0 ]; then
    echo 'This script should be run as uid=0 to set the correct permissions'
    exit 1
fi

srcdir=$(pwd)

NETBSDOUT=/media/SonyExt4/netbsd/$(git describe --always)
NETBSDRFS=${NETBSDOUT}/root
SETSDIR=${srcdir}/obj/releasedir/evbarm/binary/sets

mkdir -p ${NETBSDRFS}
mkdir -p ${NETBSDOUT}/home
mkdir -p ${NETBSDRFS}/swap
swapf=${NETBSDOUT}/swap
touch ${swapf}
dd if=/dev/zero of=${swapf} bs=4k count=4k
chmod 600 ${swapf}
unset swapf

#cp obj/releasedir/evbarm/binary/sets/* $NETBSDOUT/

for bsdset in base etc misc modules text kern-NSLU2_ALL ; do
    tar --numeric-owner -xvpzf $SETSDIR/$bsdset.tgz -C $NETBSDOUT/root/
done

mknod=$srcdir/obj/tooldir.$(uname -s)-$(uname -r)-$(uname -m)/bin/nbmknod
cd $NETBSDOUT/root/dev && sh ./MAKEDEV -m $mknod all && cd -

cat <<EOHOSTS >>${NETBSDOUT}/root/etc/hosts
192.168.77.251  kinder
192.168.77.1    toblerone
192.168.77.250  ritter nfsserver
EOHOSTS

cat <<EOFSTAB > ${NETBSDOUT}/root/etc/fstab
#/etc/fstab
nfsserver:/export/netbsd-nslu2/swap   none  swap  sw,nfsmntpt=/swap
nfsserver:/export/netbsd-nslu2/root   /     nfs   rw 0 0
nfsserver:/export/netbsd-nslu2/usr    /usr  nfs   rw 0 0
nfsserver:/export/netbsd-nslu2/home   /home nfs   rw 0 0
EOFSTAB

echo 'inet client netmask 255.255.255.0 broadcast 192.168.77.251' > ${NETBSDRFS}/etc/ifconfig.npe0

sed -i 's|^#telnet|telnet|' ${NETBSDRFS}/etc/inetd.conf

export rcconf=${NETBSDRFS}/etc/rc.conf
sed -i 's@rc_configured=.*@rc_configured=YES@' $rcconf
cat <<EORCCONF >>$rcconf
sshd=YES
hostname="kinder"
defaultroute="192.168.77.1"
nfs_client=YES
auto_ifconfig=NO
net_interfaces=""
EORCCONF
unset rcconf

# prepare copy
cat <<EOCOPY >$NETBSDOUT/copy.sh
#!/bin/sh

HASH=\$(basename "$NETBSDOUT")
rm -fr /export/netbsd-nslu2
cp -ar /mnt/netbsd/\${HASH} /export/netbsd-nslu2
rm -f /srv/tftp/netbsd-nfs.bin
cp -a /export/netbsd-nslu2/root/netbsd-nfs.bin /srv/tftp/netbsd-nfs.bin
EOCOPY
chmod +x $NETBSDOUT/copy.sh

echo "Changes done in ${NETBSDRFS}."