#!/bin/csh -f
#
set dir=`pwd`
if ($dir =~ */SunOS4) cd ..
echo -n "Uninstalling "
foreach i (ip_fil.[ch] ip_nat.[ch] ip_frag.[ch] ip_state.[ch] ip_auth.[ch] \
	   ip_proxy.[ch] ip_sync.[ch] ip_scan.[ch] ip_pool.[ch] ip_*_pxy.c \
	   ip_lookup.[ch] ip_htable.[ch] fil.c ip_compat.h ip_log.c ipl.h)
	echo -n "$i "
	/bin/rm /sys/netinet/$i
end
echo "Uninstalling ip_input.c and ip_output.c"
/bin/rm /sys/netinet/{ip_input.c,ip_output.c}

echo "Unpatching /sys/sun/conf.c"
cat SunOS4/conf.c.diff | (cd /sys/sun; patch -R)
echo "Unpatching /sys/conf.common/files.cmn"
cat SunOS4/files.cmn.diff | (cd /sys/conf.common; patch -R)
echo "Unpatching /sys/netinet/in_proto.c"
cat SunOS4/in_proto.c.diffs | (cd /sys/netinet; patch -R)

set karch=`/bin/arch -k`
set confdir="/sys/$karch/conf"
set config=`/bin/ls -1t $confdir | head -1`

echo -n "Kernel configuration to update [$config] "
set newconfig=$<
if ( "$newconfig" == "" ) then
	set newconfig=$config
endif
echo "Updating $newconfig..."
if ( -d /sys/$karch/$newconfig ) then
	mv /sys/$karch/$newconfig /sys/$karch/$newconfig.bak
endif
mv $confdir/$newconfig $confdir/$newconfig.bak
egrep -v 'options.*IPFILTER' $confdir/$newconfig.bak > $confdir/$newconfig
echo "Running config $newconfig"
cd $confdir
config $newconfig
echo "Building a new kernel"
cd ../$newconfig
make
if ($status == 0) then
	echo "New kernel is: /sys/$karch/$newconfig/vmunix"
	ls -ls /sys/$karch/$newconfig/vmunix
endif
exit 0