#!/bin/ksh
#
# Bacula interface to mtx autoloader
#
#  This script is not needed with Bacula version 1.38 or later
#  since the Storage daemon automatically ensures that only one
#  thread accesses the script at a time.     
#
#
#  $Id$
#
#  If you set in your Device resource
#
#  Changer Command = "path-to-this-script/mtx-changer %c %o %S %a %d
#    you will have the following input to this script:
#
#  mtx-changer "changer-device" "command" "slot" "archive-device" "drive-index"
#                  $1              $2       $3        $4               $5
#
#  for example:
#
#  mtx-changer /dev/sg0 load 1 /dev/nst0 0 (on a Linux system)
#
#  If you need to an offline, refer to the drive as $4
#    e.g.   mt -f $4 offline
#
#  Many changers need an offline after the unload. Also many
#   changers need a sleep 60 after the mtx load.
#
#  N.B. If you change the script, take care to return either 
#   the mtx exit code or a 0. If the script exits with a non-zero
#   exit code, Bacula will assume the request failed.
#

MTX=/lysator/bin/mtx
LOCKDIR=/tmp

TMPDIR=/tmp

make_temp_file() 
{
  TMPFILE=`mktemp ${TMPDIR}/mtx$1.XXXXXXXXXX 2> /dev/null`
  if test $? -ne 0 || test x${TMPFILE} = x; then
     TMPFILE="${TMPDIR}/mtx$1.$$"
     if test -f ${TMPFILE}; then
        echo "ERROR: Temp file security problem on: ${TMPFILE}"
        exit 1
     fi
  fi
}


if test $# -lt 2 ; then
  echo "usage: mtx-changer ctl-device command slot archive-device drive"
  echo "  Insufficient number of arguments arguments given."
  echo "  Mi                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 