#!/bin/sh

 # ------------------------------------------------------------

 # opensecurity package file

 #

 # Autor: X-Net Services GmbH <office@x-net.at>

 #

 # Copyright 2013-2014 X-Net and AIT Austrian Institute of Technology

 #

 #

 #     X-Net Technologies GmbH

 #     Elisabethstrasse 1

 #     4020 Linz

 #     AUSTRIA

 #     https://www.x-net.at

 #

 #     AIT Austrian Institute of Technology

 #     Donau City Strasse 1

 #     1220 Wien

 #     AUSTRIA

 #     http://www.ait.ac.at

 #

 #

 # Licensed under the Apache License, Version 2.0 (the "License");

 # you may not use this file except in compliance with the License.

 # You may obtain a copy of the License at

 #

 #    http://www.apache.org/licenses/LICENSE-2.0

 #

 # Unless required by applicable law or agreed to in writing, software

 # distributed under the License is distributed on an "AS IS" BASIS,

 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 # See the License for the specific language governing permissions and

 # limitations under the License.

 # ------------------------------------------------------------

 DEVICE="$1"

 # This script makes sure that the stick is unmounted and unused

 # Run this Script before the init process

 # make sure to have "/dev/sdb" (not "/dev/sdb1")

 #DEVICE="${DEVICE:0:8}" the bash way does not work in dash -.-

 DEVICE="$(echo "$DEVICE" | awk '{print substr($1,0,9)}')"

 # make sure the device is not mounted

 chattr -i "/tmp/usbmount"

 umount /tmp/usbmount/*

 sleep 1

 rmdir /tmp/usbmount/*

 umount /media/usb*

 # sometimes the umount fails with device bussy -> unknown why

 # so try until it works

 counter=0

 while ( [ -n "$(mount | grep "$DEVICE" | head -n 1 | awk '{print $3}')" ] && [ $counter -lt 10 ] )

 do

 	sleep 1

 	umount "$(mount | grep "$DEVICE" | head -n 1 | awk '{print $3}')"

 	counter=$((counter + 1))

 done

 # search for already encrypted volumes

 device=$(encryptionprovider.py -g)

 if [ "$?" = "0" ]

 then

 	encryptionprovider.py -u $device

 fi