#!/bin/sh
# Copyright (C) 2005 Krzysztof Kozlowski
#   License: GNU General Public License version 2
#            http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# version 2 as published by the Free Software Foundation.
#
# 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.
#
#
# Homepage: http://www.kozik.net.pl
#
# Ostatnia zmiana: 28.09.2006
#
# Mount cloop/loop file
#
#

usage () {
  echo "Usage: $(basename $0) [--rw] [--cloop] file mount_point"
  echo "   --cloop - use cloop"
  exit 127
}

if [ $# -lt 2 ]; then
  usage
fi

if [ $# -eq 3 ] && [ $1 == "--cloop" ]; then
  USE_CLOOP=1
  DEV="/dev/cloop"
else
  USE_CLOOP=0
  DEV="/dev/loop"
fi


find_free_loop_dev () {
  for i in 0 1 2 3 4 5 6 7 ; do
    is_used=`mount | grep loop${i} | cut -f 1 -d ' '`
    if [ "$is_used" == "" ]; then
      echo ${DEV}${i}
      return
    fi
  done
  echo ""
  return
}


if [ $USE_CLOOP -eq 1 ]; then
  modprobe cloop
fi
LOOP_DEV=`find_free_loop_dev`
if [ "$LOOP_DEV" != "" ]; then
  echo "Using loop device: $LOOP_DEV"
  losetup $LOOP_DEV "$1"
  mount -o rw $LOOP_DEV "$2"
  exit 0
else
  echo "Could not find any free loop device!"
  exit 2
fi