#!/bin/sh

usage()
{
  echo
  echo 'This script setups chroot environment for BIND'
  echo 'Usage: setup-named-chroot.sh ROOTDIR'
}

if ! [ "$#" -eq 1 ]; then
  echo 'Wrong number of arguments'
  usage
  exit 1
fi

ROOTDIR="$1"

if ! [ -d "$ROOTDIR" ]; then
  echo "Root directory $ROOTDIR doesn't exist"
  usage
  exit 1
fi

[ -e $ROOTDIR/dev/null ]    || mknod -m 0666 $ROOTDIR//dev/null   c 1 3
[ -e $ROOTDIR/dev/random ]  || mknod -m 0666 $ROOTDIR//dev/random c 1 8
[ -e $ROOTDIR/dev/urandom ] || mknod -m 0666 $ROOTDIR/dev/urandom c 1 9

# better always copy localtime so it respects the system's timezone
install -m 0644 -o root -g root /etc/localtime $ROOTDIR/etc/

case $(arch) in
    x86_64)
	libdir=/usr/lib64
	;;
    i686)
	libdir=/usr/lib
	;;
esac
version=$(rpm -q --queryformat='%{VERSION}\n' openssl)
mkdir -p $ROOTDIR$libdir
cp -r $libdir/openssl-$version $ROOTDIR$libdir

[ -d $ROOTDIR/proc ] || mkdir -p $ROOTDIR/proc
if ! egrep -q '^/proc[[:space:]]+$ROOTDIR/proc' /proc/mounts; then
    mount --bind /proc $ROOTDIR/proc -o ro >/dev/null 2>&1
fi