#!/bin/sh
-# provide the shortest possible unique hardware path to a block device
-# for the udev persistent disk device naming scheme
+# provide the shortest possible unique hardware path to a device
+# for the Linux Persistent Device Naming scheme
#
-# Copyright (C) 2005 SUSE Linux Products GmbH
+# Copyright (C) 2005-2006 SUSE Linux Products GmbH
# Author:
# Hannes Reinecke <hare@suse.de>
#
# Free Software Foundation version 2 of the License.
#
# to be called from a udev rule to return the name for a symlink
-# DEVPATH=/block/sda/sda3 path_id
+# DEVPATH=<devpath>; path_id
# path_id <devpath>
# examples for all block devices on a system:
# for i in `find /sys/class/block`; do DEVPATH="`echo $i | sed -e 's@^/sys\|/dev@@g'`"; path_id; done
-# SCSI cdrom
-# /class/block/sr0 -> /devices/pci0002:30/0002:30:0c.0/host0/target0:0:0/0:0:1:0
-# pci-0002:30:0c.0-scsi-0:0:1:0
-#
-# SCSI disk
-# /class/block/sda -> /devices/pci0002:30/0002:30:0c.0/host0/target0:0:0/0:0:4:0
-# pci-0002:30:0c.0-scsi-0:0:4:0
-#
-# SATA disk, 4 channels per controller
-# /class/block/sda -> /devices/pci0001:00/0001:00:07.0/0001:05:0c.0/host0/target0:0:0/0:0:0:0
-# pci-0001:05:0c.0-scsi-0:0:0:0
-#
-# IDE disk
-# /class/block/hda -> /devices/pci0002:02/0002:02:0d.0/ide0/0.0
-# pci-0002:02:0d.0-ide-0.0
-#
-# IDE cdrom on a Mac ASIC:
-# /class/block/hdc -> /devices/pci0001:01/0001:01:17.0/0.80000000:mac-io/0.00020000:ata-3/ide1/1.0
-# mac-io_ata-3_master
-#
-# IDE cdrom on a Mac ASIC, with ide-scsi:
-# /class/block/sr0 -> /devices/pci0001:01/0001:01:17.0/0.80000000:mac-io/0.0001f000:ata-4/ide0/0.1/host2/target2:0:0/2:0:0:0
-# mac-io_ata-4_slave
-
-# USB CDrom drive without 'serial' number:
-# reusing 'product' and 'manufacturer' string, if available
-# /class/block/sr0 -> /devices/pci0001:00/0001:00:04.0/0001:02:0b.0/usb4/4-2/4-2:1.0/host4/4:0:0:0
-# usb-storage-odd-Freecom-USIDERev930:0:0:0
-
-# devices may have several interfaces on one PCI device, like IDE:
-# pci-0001:00:04.0_ide1-master
-# pci-0001:00:04.0_ide2-master
-# pci-0001:00:04.0_ide2-slave
-# they are marked as ports, it is expected that the driver shows
-# ide1 even if there is nothing connected to either master or slave
-# interface
-#
-# match order is important.
-# first IDE to find ide-scsi devices, then SCSI
-# first usb-storage, then firewire sbp2, then the rest
-
SYSFS=/sys
RESULT=1
TYPE=
full_sysfs_device_path=
if [ -z "$DEVPATH" -a -z "$1" ] ; then
- exit 1
+ exit 1
fi
if [ -z "$DEVPATH" ] ; then
- case "$1" in
- $SYSFS/*)
- DEVPATH="${1#$SYSFS}"
- ;;
- *)
- DEVPATH=$1
- ;;
- esac
+ case "$1" in
+ $SYSFS/*)
+ DEVPATH="${1#$SYSFS}"
+ ;;
+ *)
+ DEVPATH=$1
+ ;;
+ esac
fi
if [ ! -e $SYSFS$DEVPATH/dev ] ; then
- exit 1
+ exit 1
fi
case "$DEVPATH" in
- /devices/*)
- cd "$SYSFS$DEVPATH/subsystem";
- TYPE="`pwd -P`"
- cd "$OPWD"
- TYPE="${TYPE##*/}"
- ;;
- /class/*)
- TYPE="${DEVPATH#/class/}"
- TYPE="${TYPE%%/*}"
- ;;
- /block/*)
- TYPE=block
- ;;
- *)
- exit 1
- ;;
+ /devices/*)
+ cd "$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
+ 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
- while [ ! -z "$host_dev_path" ] ; do
- case "$host_dev_path" in
- */pci[0-9]*)
- host_dev_path=${host_dev_path%/*}
- ;;
- *) break;;
- esac
- done
-
- d="pci-$pci_id-$d"
- D="$host_dev_path"
- RESULT=0
+ local DEV=$1
+ cd -P $1
+ DEV=${PWD}
+ pci_id=${DEV##*/}
+ host_dev_path=$DEV
+ while [ ! -z "$host_dev_path" ] ; do
+ case "$host_dev_path" in
+ */pci[0-9]*)
+ host_dev_path=${host_dev_path%/*}
+ ;;
+ *)
+ break
+ ;;
+ esac
+ done
+ d="pci-$pci_id-$d"
+ D="$host_dev_path"
+ RESULT=0
}
-handle_block_ide () {
-: handle_block_ide $*
+handle_ide () {
+ : handle_ide $*
local DEV=$1
local port idedev idecontroller
# IDE
: DEV $DEV
-
port=${DEV##*/}
idedev=${DEV%/*}
idecontroller=${idedev%/*}
: 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
+ 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-$d"
+ d="ide-${port}:$channel-$d"
else
- d="ide-${port}:$channel"
+ d="ide-${port}:$channel"
fi
D=$idecontroller
RESULT=0
}
-handle_block_scsi () {
- : handle_block_scsi $*
+handle_scsi () {
+ : handle_scsi $*
local DEV=$1
local cil controller_port controller_dev
# SCSI device
cd "$target_dev"
target_num=0
for tid in ${target_id}* ; do
- target_num=$(( $target_num + 1 ))
+ target_num=$(( $target_num + 1 ))
done
-
controller_port=${target_dev%/*}
controller_dev="${controller_port%/*}"
-
: controller_dev $controller_dev
: controller_port $controller_port
# a host controller may have more than one interface/port
cd "$OPWD"
controller_port=$(( $controller_port - $controller_offset))
scsi_id="scsi-${controller_port}:${cil}"
-
if [ "$d" ] ; then
- d="${scsi_id}-$d"
+ d="${scsi_id}-$d"
else
- d="$scsi_id"
+ d="$scsi_id"
fi
-
D="$controller_dev"
RESULT=0
}
-handle_block_firewire () {
- :handle_block_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_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_block_fc () {
-: handle_block_fc $*
+handle_fc () {
+ : handle_fc $*
local DEV=$1
local cil controller_port controller_dev
# SCSI-FC device
fc_tgt_num="${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
+ read wwpn < $fc_tgt_dev/port_name
fi
if [ -z "$wwpn" ] ; then
- : no WWPN
- RESULT=1
- return
+ : no WWPN
+ 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 (($fc_tgt_lun == 0)) ; then
- lun="0x0000000000000000"
+ lun="0x0000000000000000"
else
- lun="0x${tmp_lun3}${tmp_lun2}${tmp_lun1}${tmp_lun0}"
+ lun="0x${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_block_sas () {
- : handle_block_sas $*
+handle_sas () {
+ : handle_sas $*
local DEV=$1
local cil adapter controller_dev
# SAS device
sas_rphy_id="${sas_phy_path##*/}"
sas_phy_dev="${sas_host_path}/${sas_phy_id}/sas_phy:${sas_phy_id}"
if [ -e "$sas_phy_dev/sas_address" ]; then
- read phy_address < $sas_phy_dev/sas_address
- read phy_port < $sas_phy_dev/port_identifier
- read phy_id < $sas_phy_dev/phy_identifier
+ read phy_address < $sas_phy_dev/sas_address
+ read phy_port < $sas_phy_dev/port_identifier
+ read phy_id < $sas_phy_dev/phy_identifier
fi
if [ -z "$phy_address" ] ; then
- : no initiator address
- RESULT=1
- return
+ : no initiator address
+ RESULT=1
+ return
fi
sas_phy_address="$phy_address:$phy_port:$phy_id"
sas_rphy_dev="${sas_host_path}/${sas_phy_id}/${sas_rphy_id}/sas_rphy:${sas_rphy_id}"
if [ -e "$sas_rphy_dev/sas_address" ]; then
- read rphy_address < $sas_rphy_dev/sas_address
- read rphy_id < $sas_rphy_dev/phy_identifier
+ read rphy_address < $sas_rphy_dev/sas_address
+ read rphy_id < $sas_rphy_dev/phy_identifier
fi
if [ -z "$rphy_address" ] ; then
- : no initiator address
- RESULT=1
- return
+ : no initiator address
+ RESULT=1
+ return
fi
sas_rphy_address="$rphy_address:$rphy_id"
-
controller_dev="${sas_host_path%/host[0-9]*}"
-
# SAS devices are always endpoints
d="sas-${sas_phy_address}-${sas_rphy_address}"
D="$controller_dev"
-
RESULT=0
}
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 ;;
+ usb_host_path=$host_dev_path
+ host_dev_path="${host_dev_path%/*}"
+ ;;
+ *)
+ break
+ ;;
esac
done
: host_dev_path $host_dev_path
usb_host_offset=$(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}"
+ d="usb-$usb_host_port:$port_num-${d}"
else
- d="usb-$usb_host_port:$port_num"
+ d="usb-$usb_host_port:$port_num"
fi
-
D="$host_dev_path"
RESULT=0
}
-handle_block () {
- full_sysfs_path="$SYSFS$DEVPATH"
- if [ -L $full_sysfs_path/subsystem ]; then
- # new sysfs block layout
- full_sysfs_path="${full_sysfs_path%/*}"
- cd "$full_sysfs_path/subsystem";
- subsys="`pwd -P`"
- cd "$OPWD"
- subsys="${subsys##*/}"
- if [ "$subsys" == "block" ]; then
- # parent is "block", it's a partition, move one up
- full_sysfs_path="${full_sysfs_path%/*}"
- fi
- cd $full_sysfs_path
- else
- # old sysfs block layout
- if [ ! -L $full_sysfs_path/device ] ; then
- if [ -f $full_sysfs_path/range ] ; then return ; fi
- full_sysfs_path="${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
- cd $full_sysfs_path/device
- fi
- full_sysfs_device_path="`pwd -P`"
- cd "$OPWD"
- D=$full_sysfs_device_path
- while [ ! -z "$D" ] ; do
- case "$D" in
- */ide[0-9]/[0-9].[0-9]*|*/ide[0-9][0-9]/[0-9][0-9].[0-9]*)
- handle_block_ide "$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:$lun"
- RESULT=0
+handle_device () {
+ full_sysfs_path="$SYSFS$DEVPATH"
+ if [ -L $full_sysfs_path/subsystem ]; then
+ # new sysfs block layout
+ full_sysfs_path="${full_sysfs_path%/*}"
+ cd "$full_sysfs_path/subsystem";
+ subsys="`pwd -P`"
+ cd "$OPWD"
+ subsys="${subsys##*/}"
+ if [ "$subsys" == "block" ]; then
+ # parent is "block", it's a partition, move one up
+ full_sysfs_path="${full_sysfs_path%/*}"
+ fi
+ cd $full_sysfs_path
else
- # DASD devices
- bus="ccw"
- adapter=${D##*/}
- d="$bus-$adapter"
- RESULT=0
+ # old sysfs block layout
+ if [ ! -L $full_sysfs_path/device ] ; then
+ if [ -f $full_sysfs_path/range ] ; then return ; fi
+ full_sysfs_path="${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
+ cd $full_sysfs_path/device
fi
- D=
- ;;
- */rport-[0-9]*:[0-9]*-[0-9]*/*)
- handle_block_fc "$D"
- ;;
- */phy-[0-9]*:[0-9]*/*)
- handle_block_sas "$D"
- ;;
- */fw-host[0-9]*/*)
- handle_block_firewire "$D"
- ;;
- */host[0-9]*/[0-9]*:[0-9]*:[0-9]*:[0-9]*)
- handle_block_scsi "$D"
- ;;
- */usb[0-9]*/[0-9]*/*)
- handle_usb "$D"
- ;;
- */pci[0-9]*:[0-9]*)
- handle_pci "$D"
- ;;
- */devices)
- D=
- ;;
- *)
- : not handled
- RESULT=1
- return
- ;;
- esac
- done
+ full_sysfs_device_path="`pwd -P`"
+ cd "$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 "$D"
+ ;;
+ */phy-[0-9]*:[0-9]*/*)
+ handle_sas "$D"
+ ;;
+ */fw-host[0-9]*/*)
+ handle_firewire "$D"
+ ;;
+ */host[0-9]*/[0-9]*:[0-9]*:[0-9]*:[0-9]*)
+ handle_scsi "$D"
+ ;;
+ */usb[0-9]*/[0-9]*/*)
+ handle_usb "$D"
+ ;;
+ */pci[0-9]*:[0-9]*)
+ handle_pci "$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${mode}"
+ fi
+ fi
+}
- if [ "$TYPE" == "scsi_tape" ] ; then
- devname=${full_sysfs_path##*/}
- rewind="${devname%%st*}"
- mode="${devname##*st}"
- case "$mode" in
- *l)
- mode="l"
+case "$TYPE" in
+ block)
+ handle_device
+ echo "ID_PATH=$d"
;;
- *m)
- mode="m"
+ scsi_tape)
+ handle_device
+ echo "ID_PATH=$d"
;;
- *a)
- mode="a"
+ input)
+ handle_device
+ echo "ID_PATH=$d"
;;
- *)
- mode=""
+ *)
+ RESULT=1
;;
- esac
- if [ "$d" ]; then
- d="$d-${rewind}st${mode}"
- fi
- fi
-}
-
-case "$TYPE" in
- block)
- handle_block
- echo "ID_PATH=$d"
- ;;
- scsi_tape)
- handle_block
- echo "ID_PATH=$d"
- ;;
- input)
- handle_usb $SYSFS$DEVPATH/device
- echo "ID_PATH=$d"
- ;;
- *)
- RESULT=1
- ;;
esac
+
exit $RESULT
~ianmdlvl / elogind.git / commitdiff