#!/bin/sh
# -*- mode: sh; tab-width: 8; encoding: utf-8-unix -*-

ROLE=base
prog=$( basename $0 .bash )

. /usr/local/bin/usr_local_tput.bash
error () { ERROR "$prog $2" ; exit $1 ; }

# must be run as root
if [ "$( id -u )" != "0" ] ; then
    echo ERROR: $0 run as root
    exit 0
  fi
if [ "$#" -eq "0" ] ; then
    error 2 "give an absolute directory name as argument"
  fi
root=$1
if [ ! -d "$1" ] ; then
    error 3 "give an absolute directory name for chroot - $root"
  fi

mount | grep $root/ | while read a on elt rest ; do
    umount $elt || { ERROR "unmounting $elt" ; exit 5 ; }
  done

mount | grep bind | while read a on elt rest ; do
    umount $elt || { ERROR "unmounting $elt" ; exit 6 ; }
  done

umount -R $root

lsof $root/usr 2>/dev/null \
  | sed -e 's@^[a-z]* *@@' -e 's@ .*@@' \
  | grep -v "$$\\|COMMAND" | sort -r -u | while read pid ; do
      INFO "killing $pid"
      kill $pid
      sleep 10
#?      kill -9 $pid
  done

exit 0