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Diffstat (limited to 'utils/iscsi-gen-initiatorname.sh.template')
| -rw-r--r-- | utils/iscsi-gen-initiatorname.sh.template | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/utils/iscsi-gen-initiatorname.sh.template b/utils/iscsi-gen-initiatorname.sh.template new file mode 100644 index 0000000..70ad8bf --- /dev/null +++ b/utils/iscsi-gen-initiatorname.sh.template @@ -0,0 +1,102 @@ +#!/bin/bash +# +# iscsi-gen-initiatorname +# +# Generate a default iSCSI Initiatorname for SUSE installations. +# +# Copyright (c) 2022 Hannes Reinecke, SUSE Labs +# This script is licensed under the GPL. +# + +NAME="$0" +INAME_FILE="/etc/iscsi/initiatorname.iscsi" +IQN_PREFIX="iqn.1996-04.de.suse:01" + +IBFT_COMMENTS="\ +## +## 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 +## @SBINDIR@/iscsi-gen-initiatorname -f +## to recreate an updated version of this file. +##" + +NORMAL_COMMENTS="\ +## +## 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." + +usage_and_exit() +{ + xit_val=$1 + + echo "Usage: $NAME [OPTIONS] -- generate an iSCSI initiatorname" + echo "Where OPTIONS are from:" + echo " -h print usage and exit" + echo " -f overwrite existing initiator name, if any" + echo " -p IQN-PRE set the prefix for the IQN generated (default $IQN_PREFIX)" + exit $xit_val +} + +while getopts "hfp:" o ; do + case "${o}" in + h) usage_and_exit 0 ;; + f) FORCE=1 ;; + p) IQN_PREFIX=${OPTARG} ;; + ?) usage_and_exit 1 ;; + esac +done +shift $(($OPTIND-1)) + +if [ "$#" -gt 0 ] ; then + echo "Invalid argument(s): $*" + usage_and_exit +fi + +# use the iBFT initiator name, if present +if [ -d /sys/firmware/ibft/initiator ] ; then + read iSCSI_INITIATOR_NAME < /sys/firmware/ibft/initiator/initiator-name +fi + +# if we have an iBFT initiator name and an initiator name +# file, they had better match, unless "force" is set +if [ -f $INAME_FILE -a -z "$FORCE" ] ; then + if [ "$iSCSI_INITIATOR_NAME" ] ; then + eval $(cat $INAME_FILE | sed -e '/^#/d') + if [ "$iSCSI_INITIATOR_NAME" != "$InitiatorName" ] ; then + echo "iSCSI Initiatorname from iBFT is different from the current setting." + echo "Please call '@SBINDIR@/iscsi-gen-initiatorname -f' to update the iSCSI Initiatorname." + exit 1 + fi + fi +fi + +# if we have an initiator name from iBFT or from +# an existing initiator name file, use it +if [ "$iSCSI_INITIATOR_NAME" ] ; then + echo "##" > $INAME_FILE || exit 1 + echo "## $INAME_FILE" >> $INAME_FILE + echo "$IBFT_COMMENTS" >> $INAME_FILE + echo "InitiatorName=$iSCSI_INITIATOR_NAME" >> $INAME_FILE + chmod 0600 $INAME_FILE +fi + +# if we still do not have an initiator name, create one +if [ ! -f $INAME_FILE ] ; then + echo "##" > $INAME_FILE || exit 1 + echo "## $INAME_FILE" >> $INAME_FILE + echo "$NORMAL_COMMENTS" >> $INAME_FILE + # create a unique initiator name using iscsi-iname + INAME=$(@SBINDIR@/iscsi-iname -p "$IQN_PREFIX") + echo "InitiatorName=$INAME" >> $INAME_FILE + chmod 0600 $INAME_FILE +fi |