#!/bin/sh
# jailsetup.sh 0.2.1 (10/Dec/2003). http://jbc.fi/
# Jail setup script for FreeBSD 5.1-RELEASE
# By JB Consulting Oy Ab / Jani Reinikainen [ jani (at) jbc (dot) fi ]

# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

if [ x"$1" = x ]
then
   echo Usage: $0 [ip]
   echo example: $0 10.0.0.20
   exit
fi

D=/var/jail/$1

if [ -f $D ]; then
   echo Error: A file has the same name as the destination.
   exit
fi


if [ ! -d /usr/src/sys ]; then
 echo Error: Cannot find sources at /usr/src/! Are they installed?
 exit
fi

# There's a lot of unneccessary stuff compiled in by default.
# Let's discard some we don't need. See man make.conf(5).

if [ ! -f /etc/make.jail.conf ]; then
cat <<EOF > /etc/make.jail.conf
CFLAGS= -O -pipe
COPTFLAGS= -O -pipe
NO_KERBEROS=true
NO_BIND=true
NO_FORTRAN=true
NO_CVS=true
NO_I4B=true
NO_IPFILTER=true
NO_LPR=true
NO_MAILWRAPPER=true
NO_MAKEDEV=true
NO_OBJC=true
NO_SENDMAIL=true
NO_SHAREDOCS=true
NO_X=true
NO_GDB=true
NO_MODULES=true
NO_TCSH=true
NOMAN=true
NOGAMES=true
NOINFO=true
NOPROFILE=true
EOF
fi


if [ ! -d $D ]; then
 /bin/mkdir -p $D
fi

# http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html
# "You can speed up the ``make world'' process, and possibly save yourself
# some dependency headaches by removing /usr/obj as well."

if [ -d /usr/obj ]; then
 cd /usr/obj
 chflags -R noschg *
 rm -rf *
fi


# Make the jail. See man jail(8).
cd /usr/src
make -j4 world DESTDIR=$D __MAKE_CONF="/etc/make.jail.conf"
cd etc
make distribution DESTDIR=$D NO_MAKEDEV=yes __MAKE_CONF="/etc/make.jail.conf"
mount_devfs devfs $D/dev
cd $D
ln -sf dev/null kernel
chmod 666 $D/dev/null
touch $D/etc/fstab
mkdir $D/usr/ports
cp /etc/resolv.conf $D/etc/resolv.conf
cp /stand/sysinstall $D/stand/sysinstall


# Genereate $D/etc/rc.conf
cat <<EOF > $D/etc/rc.conf
rpcbind_enable="NO"
cron_enable="NO"
syslogd_enable="NO"
inetd_enable="NO"
sendmail_enable="NONE"
network_interfaces=""
EOF