3 # provide the shortest possible unique hardware path to a block device
4 # for the udev persistent disk device naming scheme
6 # Copyright (C) 2005 SUSE Linux Products GmbH
7 # Licensed under the GPL v2.
9 # to be called from a udev rule to return the name for a symlink
10 # DEVPATH=/block/sda/sda3 $0 (or similar)
15 # for i in `find /sys/block -name dev` ;do DEVPATH="`echo $i | sed -e 's@^/sys\|/dev@@g'`" $0 ; done
19 # /block/sr0 -> /devices/pci0002:30/0002:30:0c.0/host0/0:0:1:0
20 # result: pci-0002:30:0c.0-scsi-0:0:1:0
22 # /block/sda -> /devices/pci0002:30/0002:30:0c.0/host0/0:0:4:0
23 # result: pci-0002:30:0c.0-scsi-0:0:4:0
24 # SATA disk, 4 channels per controller
25 # /block/sda -> /devices/pci0001:00/0001:00:07.0/0001:05:0c.0/host0/0:0:0:0
26 # result: pci-0001:05:0c.0-scsi-0:0:0:0
28 # /block/hda -> /devices/pci0002:02/0002:02:0d.0/ide0/0.0
29 # result: pci-0002:02:0d.0-ide-0.0
30 # IDE cdrom on a Mac ASIC:
31 # /block/hdc -> /devices/pci0001:01/0001:01:17.0/0.80000000:mac-io/0.00020000:ata-3/ide1/1.0
32 # result: mac-io_ata-3_master
33 # IDE cdrom on a Mac ASIC, with ide-scsi:
34 # /block/sr0 -> /devices/pci0001:01/0001:01:17.0/0.80000000:mac-io/0.0001f000:ata-4/ide0/0.1/host2/2:0:0:0
35 # result: mac-io_ata-4_slave
37 # USB CDrom drive without 'serial' number:
38 # reusing 'product' and 'manufacturer' string, if available
39 # /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
40 # result: usb-storage-odd-Freecom-USIDERev930:0:0:0
42 # devices may have several interfaces on one PCI device, like IDE:
43 # pci-0001:00:04.0_ide1-master
44 # pci-0001:00:04.0_ide2-master
45 # pci-0001:00:04.0_ide2-slave
46 # they are marked as ports, it is expected that the driver shows
47 # ide1 even if there is nothing connected to either master or slave
50 # match order is important.
51 # first IDE to find ide-scsi devices.
63 if $(pwd -P > /dev/null 2>&1); then
68 full_sysfs_class_path=
69 full_sysfs_device_path=
71 if [ -z "$DEVPATH" -a -z "$1" ] ; then
75 if [ -z "$DEVPATH" ] ; then
86 if [ ! -d $SYSFS$DEVPATH ] ; then
89 if [ ! -f $SYSFS$DEVPATH/dev ] ; then
98 TYPE="${DEVPATH#/class/}"
111 local type offset port
114 for i in $type[0-9]* ; do
117 if [ "$port" -lt "$offset" ] ; then offset=$port ; fi
119 if [ "$port" != "0" ] ; then
120 echo $(($2 - $offset))
124 handle_block_ide () {
125 : handle_block_ide $*
127 local port idedev idecontroller
132 # remove ide-scsi part, leave only channel info
133 */ide[0-9]*/host[0-9]*)
134 while [ ! -z "$d" ] ; do
148 while [ ! -z "$d" ] ; do
161 # port info if the controller has more than one interface
164 : idedev $idedev kernel_port $port
165 case "${idedev##*.}" in
173 echo "Error: $idedev is neither master or slave" >&2
178 d="`echo $d | sed -e 's@^.*:mac-io[^:]\+:\([^/]\+\).*@mac-io_\1@'`"
182 ifname=${full_sysfs_class_path##*/}
183 set -- `sed -n "/$ifname/p" /var/lib/pcmcia/stab`
188 # d="`echo $d | sed -e 's@^.*/\([^/]\{1,\}\)/.@pci-\1@'`"
193 port="`get_port ide $port`"
195 : hardware_port $port
196 if [ -z "$port" ] ; then
197 d="${d}-ide-0:$channel"
199 d="${d}-ide-${port}:$channel"
205 handle_block_scsi () {
206 : handle_block_scsi $*
208 local cil controller_port controller_dev
213 while [ ! -z "$controller_dev" ] ; do
214 case "$controller_dev" in
216 controller_port=$controller_dev
217 controller_dev="${controller_dev%/*}"
222 : controller_dev $controller_dev
223 : controller_port $controller_port
224 # a host controller may have more than one interface/port
225 controller_port="${controller_port##*/}"
226 controller_port="${controller_port##host}"
228 case "$controller_dev" in
229 # grand central, old powermacs
231 adapter="`echo $controller_dev | sed -e 's@/[^/]\{1,\}$@@;s@^.*/@@;s@^.*:@@'`"
235 adapter="${controller_dev##*/}"
240 controller_port="`get_port host $controller_port`"
243 if [ -z "$controller_port" ] ; then
246 d="${d}-scsi-${controller_port}:${cil}"
250 handle_block_usb_storage () {
251 : handle_block_usb_storage $*
256 while [ ! -z "$controller_dev" ] ; do
257 case "$controller_dev" in
259 controller_dev="${controller_dev%/*}"
264 : controller_dev $controller_dev
266 # usb-storage devs have a serial number, hopefully unique
268 if [ -f $controller_dev/../serial ] ; then
269 serial="`sed -e 's@^[ -]\{1,\}\|[ -]\{1,\}$@@g;s@[^abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_0123456789]@@g' < $controller_dev/../serial`"
270 : serial XXX_${serial}_XXX
272 serial="`echo $serial | sed -e 's@[ 0]\{1,\}@@g'`"
274 if [ -z "$serial" ] ; then
275 # no serial, broken device
276 # has eventually binary junk in vpd
278 if [ -f $controller_dev/../product ] ; then
279 product="`sed -e 's@^[ -]\{1,\}\|[ -]\{1,\}$@@g;s@[^abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_0123456789]@@g' < $controller_dev/../product`"
281 if [ -f $controller_dev/../manufacturer ] ; then
282 manufacturer="`sed -e 's@^[ -]\{1,\}\|[ -]\{1,\}$@@g;s@[^abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_0123456789]@@g' < $controller_dev/../manufacturer`"
284 if [ -z "$product" -o -z "$manufacturer" ] ; then
285 read idvendor < $controller_dev/../idVendor
286 read idproduct < $controller_dev/../idProduct
287 identifier="0x${idvendor}-0x${idproduct}"
289 identifier="${manufacturer}-${product}"
291 d="usb-${identifier}"
300 full_sysfs_class_path="$SYSFS$DEVPATH"
301 if [ ! -f $full_sysfs_class_path/dev ] ; then return ; fi
302 # the main device has (hopefully) a symlink to the real device
303 # a partition is a subdir of the main (raw) device
304 if [ ! -L $full_sysfs_class_path/device ] ; then
305 if [ -f $full_sysfs_class_path/range ] ; then return ; fi
306 full_sysfs_class_path="${full_sysfs_class_path%/*}"
307 : full_sysfs_class_path "$full_sysfs_class_path"
308 if [ ! -L $full_sysfs_class_path/device -o ! -f $full_sysfs_class_path/dev ] ; then
312 cd $full_sysfs_class_path/device
313 full_sysfs_device_path="`$pwd_cmd`"
315 D=$full_sysfs_device_path
317 */ide[0-9]/[0-9].[0-9]*|*/ide[0-9][0-9]/[0-9][0-9].[0-9]*)
318 handle_block_ide "$D"
320 */usb[0-9]*/[0-9]*/host[0-9]*/[0-9]*:[0-9]*:[0-9]*:[0-9]*)
321 handle_block_usb_storage "$D"
324 if [ -r $full_sysfs_device_path/wwpn ]; then
325 read wwpn < $full_sysfs_device_path/wwpn
327 if [ -r $full_sysfs_device_path/fcp_lun ]; then
328 read lun < $full_sysfs_device_path/fcp_lun
330 if [ -r $full_sysfs_device_path/hba_id ]; then
331 read bus_id < $full_sysfs_device_path/hba_id
333 if [ "$bus_id" -a "$wwpn" -a "$lun" ]; then
335 d="ccw-$bus_id-zfcp-$wwpn:$lun"
345 */host[0-9]*/[0-9]*:[0-9]*:[0-9]*:[0-9]*)
346 # check for ieee1394 sbp2
347 if test -f $D/ieee1394_id ; then
348 read ieee1394_id < $D/ieee1394_id
349 d="`echo ieee1394-${ieee1394_id} | sed -e 's@:@-@g'`"
352 handle_block_scsi "$D"
363 # look for a partition
364 if [ "$full_sysfs_class_path" != "$SYSFS$DEVPATH" ] ; then
365 dp="`echo $SYSFS$DEVPATH | sed -e 's@^/.*/@@;s@^[^0-9]\{1,\}@@;s@.*_@@'`"