+++ /dev/null
-#!/bin/sh
-
-# provide the shortest possible unique hardware path to a device
-# for the Linux Persistent Device Naming scheme
-#
-# Copyright (C) 2005-2006 SUSE Linux Products GmbH
-# Author:
-# Hannes Reinecke <hare@suse.de>
-#
-# 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.
-
-SYSFS=/sys
-RESULT=1
-TYPE=
-OPWD="`pwd`"
-full_sysfs_path=
-full_sysfs_device_path=
-
-if [ -z "$DEVPATH" -a -z "$1" ] ; then
- exit 1
-fi
-
-if [ -z "$DEVPATH" ] ; then
- case "$1" in
- $SYSFS/*)
- DEVPATH="${1#$SYSFS}"
- ;;
- *)
- DEVPATH=$1
- ;;
- esac
-fi
-
-if [ ! -e $SYSFS$DEVPATH/dev ] ; then
- exit 1
-fi
-
-case "$DEVPATH" in
- /devices/*)
- cd "$SYSFS$DEVPATH/subsystem";
- TYPE="`pwd -P`"
- cd "$OPWD"
- TYPE="${TYPE##*/}"
- ;;
- /class/*)
- TYPE="${DEVPATH#/class/}"
- TYPE="${TYPE%%/*}"
- ;;
- /block/*)
- TYPE=block
- ;;
- *)
- exit 1
- ;;
-esac
-
-get_port_offset () {
- local type offset port
- type=$1
- offset=$2
- for i in $type[0-9]* ; do
- : i $i
- port="${i#$type}"
- if [ "$port" -lt "$offset" ] ; then offset=$port ; fi
- done
- echo $offset
-}
-
-handle_pci () {
- local DEV=$1
- cd -P $1
- DEV=${PWD}
- pci_id=${DEV##*/}
- host_dev_path=$DEV
-
- # cciss devices don't have a separate sysfs node
- for blk_link in block*; do
- if [ -L "$blk_link" ]; then
- case "$blk_link" in
- *cciss*)
- d=cciss-${blk_link#*cciss\!}
- ;;
- esac
- fi
- done
- while [ ! -z "$host_dev_path" ] ; do
- case "$host_dev_path" in
- */pci[0-9]*)
- host_dev_path=${host_dev_path%/*}
- ;;
- *)
- break
- ;;
- esac
- done
- if [ "$d" ]; then
- d="pci-$pci_id-$d"
- else
- d="pci-$pci_id"
- fi
- D="$host_dev_path"
- RESULT=0
-}
-
-handle_platform () {
- local DEV=$1
- cd -P $1
- DEV=${PWD}
- platform_id=${DEV##*/}
- host_dev_path=$DEV
- while [ ! -z "$host_dev_path" ] ; do
- case "$host_dev_path" in
- */platform*)
- host_dev_path=${host_dev_path%/*}
- ;;
- *)
- break
- ;;
- esac
- done
- if [ "$d" ]; then
- d="platform-$platform_id-$d"
- else
- d="platform-$platform_id"
- fi
- D="$host_dev_path"
- RESULT=0
-}
-
-handle_xen () {
- local DEV=$1
- cd -P $1
- vbd_id=${DEV##*/}
- host_dev_path=$DEV
- while [ ! -z "$host_dev_path" ] ; do
- case "$host_dev_path" in
- */vbd*)
- host_dev_path=${host_dev_path%/*}
- ;;
- *)
- break
- ;;
- esac
- done
- if [ "$d" ]; then
- d="xen-$vbd_id-$d"
- else
- d="xen-$vbd_id"
- fi
- D="$host_dev_path"
- RESULT=0
-}
-
-handle_serio () {
- local DEV=$1
- cd -P $1
- DEV=${PWD}
- serio_id=${DEV##*/serio}
- host_dev_path=$DEV
- while [ ! -z "$host_dev_path" ] ; do
- case "$host_dev_path" in
- */serio*)
- host_dev_path=${host_dev_path%/*}
- ;;
- *)
- break
- ;;
- esac
- done
- if [ "$d" ]; then
- d="serio-$serio_id-$d"
- else
- d="serio-$serio_id"
- fi
- D="$host_dev_path"
- RESULT=0
-}
-
-handle_ide () {
- : handle_ide $*
- local DEV=$1
- local port idedev idecontroller
- # IDE
- : DEV $DEV
- port=${DEV##*/}
- idedev=${DEV%/*}
- idecontroller=${idedev%/*}
- # port info if the controller has more than one interface
- port="${port#ide}"
- : port $port d $d
- : idedev $idedev kernel_port $port
- case "${port#*.}" in
- 0)
- channel=0
- ;;
- 1)
- channel=1
- ;;
- *)
- echo "Error: $idedev is neither master or slave" >&2
- ;;
- esac
- cd $idecontroller
- offset="`get_port_offset ide ${port%.*}`"
- cd "$OPWD"
- : port offset $offset
- port=$((${port%.*} - $offset))
- if [ "$d" ] ; then
- d="ide-${port}:$channel-$d"
- else
- d="ide-${port}:$channel"
- fi
- D=$idecontroller
- RESULT=0
-}
-
-handle_scsi () {
- : handle_scsi $*
- local DEV=$1
- local cil controller_port controller_dev
- # SCSI device
- cil="${DEV##*/}"
- cil="${cil#*:}"
- target_dev=${DEV%/*}
- target_id=${target_dev##*/target}
- cd "$target_dev"
- target_num=0
- for tid in ${target_id}* ; do
- target_num=$(( $target_num + 1 ))
- done
- controller_port=${target_dev%/*}
- controller_dev="${controller_port%/*}"
- : controller_dev $controller_dev
- : controller_port $controller_port
- # a host controller may have more than one interface/port
- controller_port="${controller_port##*/host}"
- #
- cd "$controller_dev"
- controller_offset=$(get_port_offset host $controller_port)
- cd "$OPWD"
- controller_port=$(( $controller_port - $controller_offset))
- scsi_id="scsi-${controller_port}:${cil}"
- if [ "$d" ] ; then
- d="${scsi_id}-$d"
- else
- d="$scsi_id"
- fi
- D="$controller_dev"
- RESULT=0
-}
-
-handle_firewire () {
- : handle_firewire $*
- local DEV=$1
- if [ -f "$D/ieee1394_id" ] ; then
- read ieee1394_id < $D/ieee1394_id
- fi
- if [ -z "$ieee1394_id" ] ; then
- : no IEEE1394 ID
- RESULT=1
- return
- fi
- fw_host_dev=${DEV%/fw-host*}
- # IEEE1394 devices are always endpoints
- d="ieee1394-0x$ieee1394_id"
- D="$fw_host_dev"
- RESULT=0
-}
-
-handle_fc () {
- : handle_fc $*
- local DEV=$1
- local cil controller_port controller_dev
- # SCSI-FC device
- fc_tgt_hcil="${DEV##*/}"
- fc_tgt_lun="${fc_tgt_hcil##*:}"
- fc_tgt_path="${DEV%/*}"
- fc_tgt_num="${fc_tgt_path##*/}"
- fc_tgt_dev="${fc_tgt_path}/fc_transport/${fc_tgt_num}"
- if [ -e "$fc_tgt_dev/port_name" ]; then
- read wwpn < $fc_tgt_dev/port_name
- fi
- if [ -z "$wwpn" ] ; then
- : no WWPN
- D=
- RESULT=1
- return
- fi
- # Linux currently knows about 32bit luns
- tmp_lun3=$(printf "%04x" $(($fc_tgt_lun & 0xFFFF)))
- tmp_lun2=$(printf "%04x" $(( ($fc_tgt_lun >> 16) & 0xFFFF)))
- tmp_lun1="0000"
- tmp_lun0="0000"
- if (($fc_tgt_lun == 0)) ; then
- lun="0x0000000000000000"
- else
- lun="0x${tmp_lun3}${tmp_lun2}${tmp_lun1}${tmp_lun0}"
- fi
- controller_dev="${fc_tgt_path%/host[0-9]*}"
- # FC devices are always endpoints
- d="fc-${wwpn}:${lun}"
- D="$controller_dev"
- RESULT=0
-}
-
-handle_sas () {
- : handle_sas $*
- local DEV=$1
- local cil adapter controller_dev
- local lun
- lun=${DEV##*:}
- # SAS device
- sas_end_path="${DEV%%/target*}"
- sas_host_path="${sas_end_path%%/port*}"
- sas_phy_path="${sas_end_path#*/host*/}"
- sas_phy_path="${sas_phy_path%%/*}"
- sas_phy_path="${sas_host_path}/${sas_phy_path}"
-
- sas_phy_id=255
- for phy in $sas_phy_path/phy-*/sas_phy/phy-* ; do
- if [ -d "$phy" ] ; then
- read phy_id < $phy/phy_identifier
- if [ $phy_id -lt $sas_phy_id ]; then
- sas_phy_id=$phy_id
- fi
- fi
- done
-
- if [ $sas_phy_id -eq 255 ] ; then
- : no initiator address
- D=
- RESULT=1
- return
- fi
-
- sas_port_id="${sas_phy_path##*/port-}"
- sas_port_dev="/sys/class/sas_port/port-${sas_port_id}"
- if [ -e "$sas_port_dev/num_phys" ] ; then
- read phy_port < $sas_port_dev/num_phys
- fi
-
- sas_end_id="${sas_end_path##*end_device-}"
- sas_end_dev="/sys/class/sas_device/end_device-${sas_end_id}"
- if [ -e "$sas_end_dev/sas_address" ]; then
- read end_address < $sas_end_dev/sas_address
- read end_id < $sas_end_dev/phy_identifier
- fi
- if [ -z "$end_address" ] ; then
- : no end device address
- D=
- RESULT=1
- return
- fi
- sas_end_address="$end_address:$end_id"
- controller_dev="${sas_host_path%/host[0-9]*}"
- # SAS devices are always endpoints
- d="sas-phy${sas_phy_id}:${phy_port}-${sas_end_address}-lun$lun"
- D="$controller_dev"
- RESULT=0
-}
-
-handle_iscsi() {
- local DEV=$1
- local iscsi_session_dir
- local iscsi_session iscsi_session_path
- local iscsi_connection iscsi_connection_path
- local iscsi_scsi_lun
- # iSCSI device
- iscsi_session_dir="${DEV%%/target*}"
- iscsi_session="${iscsi_session_dir##*/}"
- iscsi_session_path=/sys/class/iscsi_session/${iscsi_session}
- if [ ! -d "$iscsi_session_path" ] ; then
- : no iSCSI session path
- RESULT=1
- return
- fi
- # Currently we're not doing MC/S
- for conn in ${iscsi_session_dir}/connection* ; do
- iscsi_conn_num=${conn##*:}
- if [ "$iscsi_conn_num" = '0' ] ; then
- iscsi_connection=$(basename $conn)
- fi
- done
- if [ -z "$iscsi_connection" ] ; then
- : no iSCSI connection found
- RESULT=1
- return
- fi
- iscsi_connection_path=/sys/class/iscsi_connection/${iscsi_connection}
- if [ ! -d "$iscsi_connection_path" ] ; then
- : no iSCSI connection path
- RESULT=1
- return
- fi
- if [ -e "${iscsi_session_path}/targetname" ]; then
- read iscsi_tgtname < ${iscsi_session_path}/targetname
- fi
- if [ -z "$iscsi_tgtname" ] ; then
- : No iSCSI Targetname
- RESULT=1
- return
- fi
- if [ -e "${iscsi_connection_path}/persistent_address" ] ; then
- read iscsi_address < ${iscsi_connection_path}/persistent_address
- fi
- if [ -z "$iscsi_address" ] ; then
- : No iSCSI Target address
- RESULT=1
- return
- fi
- if [ -e "${iscsi_connection_path}/persistent_port" ] ; then
- read iscsi_port < ${iscsi_connection_path}/persistent_port
- fi
- iscsi_scsi_lun="${DEV##*:}"
- d="ip-${iscsi_address}:${iscsi_port}-iscsi-${iscsi_tgtname}-lun-${iscsi_scsi_lun}"
- RESULT=0
-}
-
-handle_usb () {
-: handle_usb $*
- local DEV=$1
- cd -P $1
- DEV=${PWD}
- port_id=${DEV##*/}
- port_num=${port_id#*-}
- host_dev_path=$DEV
- while [ ! -z "$host_dev_path" ] ; do
- case "$host_dev_path" in
- */usb*)
- usb_host_path=$host_dev_path
- host_dev_path="${host_dev_path%/*}"
- ;;
- *)
- break
- ;;
- esac
- done
- : host_dev_path $host_dev_path
- usb_host_num=${usb_host_path##*/usb}
-
- cd "$host_dev_path"
- usb_host_offset=$(get_port_offset usb $usb_host_num)
- usb_host_port=$(($usb_host_num - $usb_host_offset))
- cd "$OPWD"
- if [ "$d" ] ; then
- d="usb-$usb_host_port:$port_num-${d}"
- else
- d="usb-$usb_host_port:$port_num"
- fi
- D="$host_dev_path"
- RESULT=0
-}
-
-handle_device () {
- full_sysfs_path="$SYSFS$DEVPATH"
- case "$DEVPATH" in
- /devices/*)
- full_sysfs_path="${full_sysfs_path%/*}"
- # skip parent device of the same subsystem
- if [ -L $full_sysfs_path/subsystem ]; then
- cd "$full_sysfs_path/subsystem";
- subsys="`pwd -P`"
- cd "$OPWD"
- subsys="${subsys##*/}"
- if [ "$subsys" = "$TYPE" ]; then
- : skip same subsystem parent
- full_sysfs_path="${full_sysfs_path%/*}"
- fi
- fi
- # skip subsystem directory
- subsys="${full_sysfs_path##*/}"
- if [ "$subsys" = "$TYPE" ]; then
- : skip subsystem directory
- full_sysfs_path="${full_sysfs_path%/*}"
- fi
- cd $full_sysfs_path
- ;;
- *)
- # old sysfs layout
- if [ ! -L $full_sysfs_path/device ]; then
- full_sysfs_path="${full_sysfs_path%/*}"
- : full_sysfs_path "$full_sysfs_path"
- if [ ! -L $full_sysfs_path/device -o ! -f $full_sysfs_path/dev ]; then
- return
- fi
- fi
- if [ -L $full_sysfs_path/device/device ]; then
- cd $full_sysfs_path/device/device
- else
- cd $full_sysfs_path/device
- fi
- ;;
- esac
- full_sysfs_device_path="`pwd -P`"
- cd "$OPWD"
-
- D=$full_sysfs_device_path
- while [ ! -z "$D" ] ; do
- case "$D" in
- */ide[0-9]/[0-9].[0-9]*|*/ide[0-9][0-9]/[0-9][0-9].[0-9]*)
- handle_ide "$D"
- ;;
- */css0/*)
- if [ -r $full_sysfs_device_path/wwpn ]; then
- read wwpn < $full_sysfs_device_path/wwpn
- fi
- if [ -r $full_sysfs_device_path/fcp_lun ]; then
- read lun < $full_sysfs_device_path/fcp_lun
- fi
- if [ -r $full_sysfs_device_path/hba_id ]; then
- read bus_id < $full_sysfs_device_path/hba_id
- fi
- if [ "$bus_id" -a "$wwpn" -a "$lun" ]; then
- # S/390 zfcp adapter
- d="ccw-$bus_id-zfcp-$wwpn:$lun"
- RESULT=0
- else
- # DASD devices
- bus="ccw"
- adapter=${D##*/}
- d="$bus-$adapter"
- RESULT=0
- fi
- D=
- ;;
- */rport-[0-9]*:[0-9]*-[0-9]*/*)
- handle_fc "$D"
- ;;
- */end_device-[0-9]*:[0-9]*:[0-9]*/*)
- handle_sas "$D"
- ;;
- */fw-host[0-9]*/*)
- handle_firewire "$D"
- ;;
- */session[0-9]*/*)
- handle_iscsi "$D"
- D=
- ;;
- */host[0-9]*/[0-9]*:[0-9]*:[0-9]*:[0-9]*)
- handle_scsi "$D"
- ;;
- */ttyUSB*)
- D=${D%/ttyUSB*}
- ;;
- */usb[0-9]*/[0-9]*/*)
- handle_usb "$D"
- ;;
- */pci[0-9]*:[0-9]*)
- handle_pci "$D"
- ;;
- */serio[0-9]*)
- handle_serio "$D"
- ;;
- */platform/*)
- handle_platform "$D"
- ;;
- */vbd-[0-9]*)
- handle_xen "$D"
- ;;
- */devices)
- D=
- ;;
- *)
- : not handled
- RESULT=1
- return
- ;;
- esac
- done
- if [ "$TYPE" = "scsi_tape" ] ; then
- devname=${full_sysfs_path##*/}
- rewind="${devname%%st*}"
- mode="${devname##*st}"
- case "$mode" in
- *l)
- mode="l"
- ;;
- *m)
- mode="m"
- ;;
- *a)
- mode="a"
- ;;
- *)
- mode=""
- ;;
- esac
- if [ "$d" ]; then
- d="$d-${rewind}st${mode}"
- fi
- fi
-}
-
-handle_device
-if [ -z "$d" ]; then
- exit 1
-fi
-echo "ID_PATH=$d"
-exit 0
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