#!/bin/sh
#
# Program: SD.CONF Creation Tool <sd-create.sh>
#
# Author: Matty < matty91 at gmail dot com >
#
# Current Version: 1.0
#
# Revision History:
#
#  Version 1.0
#      Initial Release
#
# Last Updated: 01-25-2005
#
# Purpose: 
#   sd-create.sh builds the sd.conf entries for a variable number of targets and LUNs.
#
# License: 
#   This program is free software; you can redistribute it and/or modify it
#   under the terms of the GNU General Public License as published by the
#   Free Software Foundation; either version 2, or (at your option) any
#   later version.
#
#   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.
#
#   You should have received a copy of the GNU General Public License
#   along with this program; if not, write to the Free Software
#   Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# 
# Installation: 
#   Copy the shell script to a suitable location
# 
# Usage (script should be run as a non-privileged user): 
#   Usage: ./sd-create.sh -c COUNT -n NAME -p PARENT target1 target2 ...
#       -c COUNT          : Number of LUNs to print per target
#       -n NAME           : Name to put in the device driver place
#       -p PARENT         : Parent of the device
# 
# Examples:
#  Create 2 LUNS for targets 10 and 15:
#  $ sd-create.sh -c 2 -n sd -p lpfc 10 15
#
#  # Date: 01-26-2005 Added 2 LUNs to target 10
#  name="sd"  parent="lpfc" target=10 lun=0
#  name="sd"  parent="lpfc" target=10 lun=1
#
#  # Date: 01-26-2005 Added 2 LUNs to target 15
#  name="sd"  parent="lpfc" target=15 lun=0
#  name="sd"  parent="lpfc" target=15 lun=1

DATE=`/bin/date "+%m-%d-%Y"`

usage() {
        echo "Usage: $0 -c COUNT -n NAME -p PARENT target1 target2 ..."
        echo "  -c COUNT          : Number of LUNs to print per target"
        echo "  -n NAME           : Name to put in the device driver place"
        echo "  -p PARENT         : Parent of the device"
}

### Process the command line arguments
while getopts c:n:p: option
do
        case "${option}"
        in
                c) LUNS=${OPTARG};;
                n) NAME=${OPTARG};;
                p) PARENT=${OPTARG};;
		\?) usage
                    exit 1;;
        esac
done

### Make sure the variables contain valid values
if [ "${LUNS}" = "" ] || [ "${NAME}" = "" ] || [ "${PARENT}" = "" ]
then
	usage
	exit 1
else
	### Get rid of all of the "-" options
	shift ` expr $OPTIND - 1`
fi

### Make sure one or more targets were passed to the program
if [ "${1}" = "" ]
then
	usage
	exit 1
fi

### Cycle through the targets and generate sd.conf entries
while [ "$1" != "" ]
do
	echo "#"
	echo "# Date: ${DATE} Added ${LUNS} LUNs to target ${1}"
	echo "#"
	INDICE=0
	while [ ${INDICE} -lt ${LUNS} ]
	do
		printf "name=\"${NAME}\"  parent=\"${PARENT}\" target=${1} lun=${INDICE};\n"
		INDICE=`expr ${INDICE} + 1`
	done
	shift
done