#!/bin/bash

#

# /sbin/iscsi-gen-initiatorname

#

# Generate a default iSCSI Initiatorname for SUSE installations.

#

# Copyright (c) 2011 Hannes Reinecke, SUSE Labs

# This script is licensed under the GPL.

#

if [ "$1" ] ; then

    if [ "$1" = "-f" ] ; then

	FORCE=1

    else

	echo "Invalid option $1"

	echo "Usage: $0 [-f]"

	exit 1

    fi

fi

if [ -d /sys/firmware/ibft/initiator ] ; then

    read iSCSI_INITIATOR_NAME < /sys/firmware/ibft/initiator/initiator-name

fi

if [ -f /etc/iscsi/initiatorname.iscsi -a -z "$FORCE" ] ; then

    if [ "$iSCSI_INITIATOR_NAME" ] ; then

	eval $(cat /etc/iscsi/initiatorname.iscsi | sed -e '/^#/d')

	if [ "$iSCSI_INITIATOR_NAME" != "$InitiatorName" ] ; then

	    echo "iSCSI Initiatorname from iBFT is different from the current setting."

	    echo "Please call '/sbin/iscsi-gen-initiatorname -f' to update the iSCSI Initiatorname."

	    exit 1

	fi

    fi

fi

if [ "$iSCSI_INITIATOR_NAME" ] ; then

    cat << EOF >> /etc/iscsi/initiatorname.iscsi

##

## /etc/iscsi/iscsi.initiatorname

##

## iSCSI Initiatorname taken from iBFT BIOS tables.

##

## DO NOT EDIT OR REMOVE THIS FILE! 

## If you remove this file, the iSCSI daemon will not start.

## Any change here will not be reflected to the iBFT BIOS tables.

## If a different initiatorname is required please change the 

## initiatorname in the BIOS setup and call

## /sbin/iscsi-gen-initiatorname -f

## to recreate an updated version of this file.

##

InitiatorName=$iSCSI_INITIATOR_NAME

EOF

fi

if [ ! -f /etc/iscsi/initiatorname.iscsi ] ; then

    cat << EOF >> /etc/iscsi/initiatorname.iscsi

##

## /etc/iscsi/iscsi.initiatorname

##

## Default iSCSI Initiatorname.

##

## DO NOT EDIT OR REMOVE THIS FILE! 

## If you remove this file, the iSCSI daemon will not start.

## If you change the InitiatorName, existing access control lists

## may reject this initiator.  The InitiatorName must be unique

## for each iSCSI initiator.  Do NOT duplicate iSCSI InitiatorNames.

EOF

	ISSUEDATE="1996-04"

	INAME=$(/sbin/iscsi-iname -p iqn.$ISSUEDATE.de.suse:01)

	printf "InitiatorName=$INAME\n"  >>/etc/iscsi/initiatorname.iscsi

	chmod 0600 /etc/iscsi/initiatorname.iscsi

fi