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EDITING: fc_wwpn_id

#!/bin/bash
#
# fc_wwpn_id
#
# Generates device node names links based on FC WWPN
# Copyright (c) 2016 Hannes Reinecke, SUSE Linux GmbH
#
# 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 version 2 of the License.
#

DEVPATH=$1
SCSIPATH=$(cd -P "/sys$DEVPATH/device" || exit; echo "$PWD")

d=$SCSIPATH
[ -d "$d/scsi_disk" ] || exit 0
target_lun=${d##*:}

while [ -n "$d" ] ; do
    d=${d%/*}
    e=${d##*/}
    case "$e" in
	rport*)
	    rport=$e
	    rport_dir="/sys/class/fc_remote_ports/$rport"
	    if [ -d "$rport_dir" ] ; then
		rport_wwpn=$(cat "$rport_dir/port_name")
	    fi
	    ;;
	host*)
	    host=$e
	    host_dir="/sys/class/fc_host/$host"
	    if [ -d "$host_dir" ] ; then
		host_wwpn=$(cat "$host_dir/port_name")
		break;
	    fi
    esac
done

if [ -n "$rport_wwpn" ] || [ -n "$host_wwpn" ] ; then
    echo "FC_TARGET_LUN=$target_lun"
fi

if [ -n "$rport_wwpn" ] ; then
    echo "FC_TARGET_WWPN=$rport_wwpn"
fi

if [ -n "$host_wwpn" ] ; then
    echo "FC_INITIATOR_WWPN=$host_wwpn"
fi

CANCEL

Name	Type	Size	Modified	Actions
↩ ..	DIR	—	—
📁 hwdb.d/	DIR	—	2026-07-19 12:20
📁 rules.d/	DIR	—	2026-08-25 05:35
📄 ata_id	?	40.7 KB	2026-06-16 17:17	EDIT
📄 cdrom_id	?	32.5 KB	2026-06-16 17:17	EDIT
📄 collect	?	20.6 KB	2026-06-16 17:17	EDIT
📄 fc_wwpn_id	?	1.1 KB	2026-08-18 13:04	EDIT
📄 fido_id	?	16.4 KB	2026-06-16 17:17	EDIT
📄 kdump-udev-throttler	?	1.4 KB	2026-02-10 17:24	EDIT
📄 kpartx_id	?	2.3 KB	2026-05-05 11:28	EDIT
📄 mtd_probe	?	12.4 KB	2026-06-16 17:17	EDIT
📄 prefixdevname	?	1.5 MB	2019-12-16 19:52	EDIT
📄 rdma_rename	?	21.1 KB	2024-04-06 12:40	EDIT
📄 rename_device	?	16.5 KB	2025-11-04 09:19	EDIT
📄 scsi_id	?	53.7 KB	2026-06-16 17:17	EDIT
📄 v4l_id	?	12 KB	2026-06-16 17:17	EDIT