3 ###############################################################################
5 ## ofpath: determine OpenFirmware path from unix device node
6 ## Copyright (C) 2000, 2001 Ethan Benson
8 ## Portions based on show_of_path.sh:
10 ## Copyright (C) 2000 Olaf Hering <olh@suse.de>
12 ## This program is free software; you can redistribute it and/or
13 ## modify it under the terms of the GNU General Public License
14 ## as published by the Free Software Foundation; either version 2
15 ## of the License, or (at your option) any later version.
17 ## This program is distributed in the hope that it will be useful,
18 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ## GNU General Public License for more details.
22 ## You should have received a copy of the GNU General Public License
23 ## along with this program; if not, write to the Free Software
24 ## Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 ###############################################################################
28 PATH="/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin"
39 Written by Ethan Benson
40 Portions based on show_of_path.sh written by Olaf Hering
42 Copyright (C) 2000, 2001 Ethan Benson
43 Portions Copyright (C) 2000 Olaf Hering
44 This is free software; see the source for copying conditions. There is NO
45 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
52 "Usage: $PRG [OPTION]... FILE
53 Find OpenFirmware device path from unix device node.
55 --debug print boring junk only useful for debugging
56 -h, --help display this help and exit
57 -V, --version output version information and exit"
60 ## a small seq replacement, seq is not present on boot/rescue floppies.
66 while [ "$v" -gt 1 ] ; do
74 ## a kludge to replace wc -l, wc is not present on boot/rescue
75 ## floppies. max file is 145 lines, 3 hosts * 16 devs each * 3 lines
76 ## per device, + 1 "Attached Devices:" line.
83 local file="$(cat $1)"
87 if [ -z "$file" ] ; then
92 ## use real wc if available
93 if (command -v wc > /dev/null 2>&1) ; then
94 if [ -x `command -v wc` ] ; then
95 lines="$(echo "$file" | wc -l)"
105 for i in `smallseq 145` ; do
106 local b="$(echo "$file" | tail -n $i)"
107 if [ "$v" = "$b" ] ; then
116 ## small tr replacment which handles a specific need of this script.
120 a) echo 1 ;; b) echo 2 ;; c) echo 3 ;; d) echo 4 ;; e) echo 5 ;; f) echo 6 ;;
121 g) echo 7 ;; h) echo 8 ;; i) echo 9 ;; j) echo 10 ;; k) echo 11 ;; l) echo 12 ;;
122 m) echo 13 ;; n) echo 14 ;; o) echo 15 ;; p) echo 16 ;;
123 1) echo a ;; 2) echo b ;; 3) echo c ;; 4) echo d ;; 5) echo e ;;
124 6) echo f ;; 7) echo g ;; 8) echo h ;; 9) echo i ;; 10) echo j ;;
125 11) echo k ;; 12) echo l ;; 13) echo m ;; 14) echo n ;; 15) echo o ;;
131 ## replacment for grep -l which is not supported by busybox grep.
132 ## echo $(cat..) hack needed because busybox grep barfs with `line too
133 ## long' when fed /proc files. the for loop is needed since busybox
134 ## grep seems to have somewhat broken regexp support.
135 ## usage: lgrep filename regexp regexp ...
141 echo "$(cat "$f")" | grep -q "$i" && echo "$f" && break
146 ## a function to print relevant scsi host path when there is more then
147 ## one. this function also takes care of stripping off the trailing
168 ## this finds information we need on both newworld and oldworld macs.
169 ## mainly what scsi host a disk is attached to.
172 ## see if system has scsi at all
173 if [ ! -f /proc/scsi/scsi ] ; then
174 echo 1>&2 "$PRG: /dev/$DEVNODE: Device not configured"
178 ## first we have to figure out the SCSI ID, have to do that
179 ## anyway [to] find the attached scsi disks = "Direct-Access" and
180 ## stop at sda=1 sdb=2 or whatever count in 3 lines steps
182 ## get last letter of device node, ie sda -> a
183 SUBNODE=${DEVNODE##*sd}
185 ## turn SUBNODE above into a number starting at 1, ie a -> 1
186 SUBDEV="$(smalltr $SUBNODE)"
187 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: SUBNODE=$SUBNODE SUBDEV=$SUBDEV"
191 ## copy scsi file into a variable removing "Attached Devices"
192 ## which is the first line. this avoids a lot of
193 ## [incmopatible] crap later, and improves readability.
195 ## find number of lines once and recycle that number, to save
196 ## some time (linecount is a bit slow). subtract one line
197 ## to scrap Attached Devices:
199 SCSILINES="$(($(linecount /proc/scsi/scsi) - 1))"
201 if [ "$SUBDEV" -gt "$(cat /proc/scsi/scsi | grep Direct-Access | linecount)" ] ; then
202 echo 1>&2 "$PRG: /dev/$DEVNODE: Device not configured"
206 PROCSCSI="$(cat /proc/scsi/scsi | tail -n $SCSILINES)"
208 for i in $(smallseq $(($SCSILINES / 3))) ; do
210 ## put every scsi device into one single line
211 DEVINFO="$(echo "$PROCSCSI" | head -n $(($i * 3)) | tail -n 3)"
212 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVINFO=$DEVINFO"
214 ## cut the type field, expect "Direct-Access" later.
215 DEVTYPE="$(v=$(echo ${DEVINFO##*Type: }) ; echo ${v%% *})"
216 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVTYPE=$DEVTYPE"
218 ## get the device id.
219 DEVID="$(v=$(echo ${DEVINFO##*Id: }) ; n=$(echo ${v%% *}) ; echo ${n#*0})"
220 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVID=$DEVID"
222 ## get the scsi host id.
223 DEVHOST="$(v=$(echo ${DEVINFO##*Host: scsi}) ; echo ${v%% *})"
224 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVHOST=$DEVHOST"
226 if [ "$DEVTYPE" = "Direct-Access" ] ; then
227 DEVCOUNT="$(($DEVCOUNT + 1))"
228 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVCOUNT=$DEVCOUNT"
229 if [ "$SUBDEV" = "$DEVCOUNT" ] ; then
232 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVICE_HOST=$DEVICE_HOST"
238 ## figure out what the scsi driver is, it is /proc/scsi/dirname.
239 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVICE_HOST=$DEVICE_HOST"
240 SCSI_DRIVER="$(x=`ls /proc/scsi/*/$DEVICE_HOST 2>/dev/null | cat` ; y=`echo ${x##*proc/scsi/}` ; echo ${y%%/*})"
241 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: SCSI_DRIVER=$SCSI_DRIVER"
243 ## figure out which host we found.
244 SCSI_HOSTNUMBER="$(v=`ls /proc/scsi/$SCSI_DRIVER/* 2>/dev/null | cat | grep -n "$DEVICE_HOST\>"` ; echo ${v%%:*})"
245 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: SCSI_HOSTNUMBER=$SCSI_HOSTNUMBER"
250 ## generic function that can find OF device paths for scsi devices,
251 ## must be run after scsiinfo().
254 case "$SCSI_DRIVER" in
256 HOST_LIST="$(for i in `find /proc/device-tree -name compatible` ; do
257 lgrep "$i" "^ADPT" "^pci900[45]" "^pciclass,01000" ; done)"
258 DEVICE_PATH="$(printhost $SCSI_HOSTNUMBER $HOST_LIST)"
259 echo "${DEVICE_PATH##*device-tree}/@$DEVICE_ID:$PARTITION"
262 HOST_LIST="$(for i in `find /proc/device-tree -name compatible` ; do
263 lgrep "$i" "^Symbios" "^pci1000" "^pciclass,01000" ; done)"
264 DEVICE_PATH="$(printhost $SCSI_HOSTNUMBER $HOST_LIST)"
265 echo "${DEVICE_PATH##*device-tree}/@$DEVICE_ID:$PARTITION"
268 HOST_LIST="$(for i in `find /proc/device-tree -name compatible` ; do
269 lgrep "$i" "mesh" ; done)"
270 DEVICE_PATH="$(printhost $SCSI_HOSTNUMBER $HOST_LIST)"
271 echo "${DEVICE_PATH##*device-tree}/@$DEVICE_ID:$PARTITION"
274 echo 1>&2 "$PRG: Driver: $SCSI_DRIVER is not supported"
281 ## figure out the OpenFirmware device path for newworld macs.
282 ## sd* scsi disks , hd* ide disks.
287 if ls -l /proc/device-tree | grep -q ^lr ; then
290 echo 1>&2 "$PRG: /proc/device-tree is broken. Do not use BootX to boot, use yaboot."
291 echo 1>&2 "$PRG: The yaboot FAQ can be found here: http://www.alaska.net/~erbenson/doc"
295 ## use common scsiinfo function to get info we need.
298 ## now we have the data for /@$DEVID:$PARTITION
299 ## find the actual OF path.
300 scsi_ofpath || return 1
303 local CDROM="$(grep "^drive name:" /proc/sys/dev/cdrom/info 2> /dev/null | grep hda)"
304 if [ -z "$CDROM" ] ; then
311 local CDROM="$(grep "^drive name:" /proc/sys/dev/cdrom/info 2> /dev/null | grep hdb)"
312 if [ -z "$CDROM" ] ; then
313 echo "ultra1:$PARTITION"
319 local CDROM="$(grep "^drive name:" /proc/sys/dev/cdrom/info 2> /dev/null | grep $DEVNODE)"
320 if [ -z "$CDROM" ] ; then
321 echo 1>&2 "$PRG: Device: /dev/$DEVNODE is not supported"
328 echo 1>&2 "$PRG: Device: /dev/$DEVNODE is not supported"
337 ## for some reason 2.4 kernels put OF aliases in aliases@0/ instead of plain aliases/
338 if [ -d "/proc/device-tree/aliases" ] ; then
339 local ALIASES="aliases"
340 elif [ -d "/proc/device-tree/aliases@0" ] ; then
341 local ALIASES="aliases@0"
343 echo 1>&2 "$PRG: Cannot find OpenFirmware aliases directory in /proc/device-tree/"
347 local MODEL="$(cat /proc/device-tree/compatible)"
348 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: Oldworld subarch: $MODEL"
351 AAPL,7300*|AAPL,7500*|AAPL,8500*|AAPL,9500*|AAPL,\?\?\?\?*)
355 case "$SCSI_DRIVER" in
357 echo $(cat /proc/device-tree/$ALIASES/scsi-int)/sd\@$DEVICE_ID:$PARTITION
360 echo $(cat /proc/device-tree/$ALIASES/scsi)/sd\@$DEVICE_ID:$PARTITION
363 echo 1>&2 "$PRG: Driver $SCSI_DRIVER is not supported"
369 echo 1>&2 "$PRG: Unsupported device: /dev/$DEVNODE"
378 case "$SCSI_DRIVER" in
380 echo $(cat /proc/device-tree/$ALIASES/scsi)/sd\@$DEVICE_ID:$PARTITION
383 echo 1>&2 "$PRG: Driver $SCSI_DRIVER is not supported"
389 echo $(cat /proc/device-tree/$ALIASES/ata)/ATA-Disk\@0:$PARTITION
392 echo $(cat /proc/device-tree/$ALIASES/ata)/ATA-Disk\@1:$PARTITION
395 echo 1>&2 "$PRG: Device: /dev/$DEVNODE is not supported"
403 case "$SCSI_DRIVER" in
405 echo $(cat /proc/device-tree/$ALIASES/scsi)/sd\@$DEVICE_ID:$PARTITION
408 echo 1>&2 "$PRG: Driver $SCSI_DRIVER is not supported"
414 echo $(cat /proc/device-tree/$ALIASES/ata)/ata-disk\@0:$PARTITION
417 echo $(cat /proc/device-tree/$ALIASES/ata)/ata-disk\@1:$PARTITION
420 echo 1>&2 "$PRG: Device: /dev/$DEVNODE is not supported"
424 AAPL,Gossamer*|AAPL,PowerMac\ G3*)
428 case "$SCSI_DRIVER" in
430 echo $(cat /proc/device-tree/$ALIASES/scsi)/sd\@$DEVICE_ID:$PARTITION
433 echo 1>&2 "$PRG: Driver $SCSI_DRIVER is not supported"
439 echo $(cat /proc/device-tree/$ALIASES/ide0)/ata-disk\@0:$PARTITION
442 echo $(cat /proc/device-tree/$ALIASES/ide0)/ata-disk\@1:$PARTITION
445 echo $(cat /proc/device-tree/$ALIASES/ide1)/ata-disk\@0:$PARTITION
448 echo $(cat /proc/device-tree/$ALIASES/ide1)/ata-disk\@1:$PARTITION
451 echo 1>&2 "$PRG: Device: /dev/$DEVNODE is not supported"
456 if [ -f /proc/device-tree/$ALIASES/ata0 ] ; then
461 if [ -f /proc/device-tree/$ALIASES/ata1 ] ; then
469 case "$SCSI_DRIVER" in
471 echo $(cat /proc/device-tree/$ALIASES/scsi)/sd\@$DEVICE_ID:$PARTITON
474 echo 1>&2 "$PRG: Driver $SCSI_DRIVER is not supported"
480 echo $(cat /proc/device-tree/$ALIASES/$ATA0)/ata-disk\@0:$PARTITION
483 echo $(cat /proc/device-tree/$ALIASES/$ATA0)/ata-disk\@1:$PARTITION
486 echo $(cat /proc/device-tree/$ALIASES/$ATA1)/atapi-disk\@0:$PARTITION
489 echo $(cat /proc/device-tree/$ALIASES/$ATA1)/atapi-disk\@1:$PARTITION
492 echo 1>&2 "$PRG: Unsupported device: /dev/$DEVNODE"
501 case "$SCSI_DRIVER" in
503 echo $(cat /proc/device-tree/$ALIASES/scsi-int)/sd\@$DEVICE_ID:$PARTITON
506 echo $(cat /proc/device-tree/$ALIASES/scsi)/sd\@$DEVICE_ID:$PARTITON
509 echo 1>&2 "$PRG: Driver $SCSI_DRIVER is not supported"
515 echo $(cat /proc/device-tree/$ALIASES/ata0)/ata-disk\@0:$PARTITION
518 echo $(cat /proc/device-tree/$ALIASES/ata0)/ata-disk\@1:$PARTITION
521 echo $(cat /proc/device-tree/$ALIASES/ata1)/atapi-disk\@0:$PARTITION
524 echo $(cat /proc/device-tree/$ALIASES/ata1)/atapi-disk\@1:$PARTITION
527 echo $(cat /proc/device-tree/$ALIASES/ata2):$PARTITION
530 echo $(cat /proc/device-tree/$ALIASES/ata3):$PARTITION
533 echo 1>&2 "$PRG: Unsupported device: /dev/$DEVNODE"
539 echo 1>&2 "$PRG: This machine is not supported: $MODEL"
546 ## find OpenFirmware device path for IBM CHRP hardware (scsi only)
551 if ls -l /proc/device-tree | grep -q ^lr ; then
554 echo 1>&2 "$PRG: /proc/device-tree is broken."
558 ## use common scsiinfo function to get info we need.
561 ## now we have the data for /@$DEVID:$PARTITION
562 ## find the actual OF path.
563 scsi_ofpath || return 1
566 echo 1>&2 "$PRG: Device: /dev/$DEVNODE is not supported"
573 ## If we get lame devfs name, we need to make it foad
577 /dev/ide/*|/dev/scsi/*|/dev/discs/*)
586 ## convert devfs names into normal short ones, written by Tom Rini.
589 ## get partition number, if any
590 local PARTNUM="${1##*[a-z]}"
591 ## Find the bus type.
592 local TYPE="$(v=${1#/dev/} ; echo ${v%/host*})"
593 ## Find the host number.
594 local HOST="$(v=${1#/dev/*/host} ; echo ${v%/bus*})"
595 ## Find the bus number.
596 local BUS="$(v=${1#/dev/*/bus} ; echo ${v%/tar*})"
598 local TARGET="$(v=${1#/dev/*/target} ; echo ${v%/lun*})"
624 echo 1>&2 "$PRG: $1: Unable to translate this device, try again without devfs."
627 local DEV="${DEV}${PARTNUM}"
632 local LUN="$(v=${1#/dev/*/lun} ; echo ${v%/*})"
634 ## In this case, we need to figure out what number our device is
637 ## copy scsi file into a variable removing "Attached Devices"
638 ## which is the first line. this avoids a lot of
639 ## [incmopatible] crap later, and improves readability.
641 ## find number of lines once and recycle that number, to save
642 ## some time (linecount is a bit slow). subtract one line
643 ## to scrap Attached Devices:
645 local SCSILINES="$(($(linecount /proc/scsi/scsi) - 1))"
646 local PROCSCSI="$(cat /proc/scsi/scsi | tail -n $SCSILINES)"
648 for i in $(smallseq $(($SCSILINES / 3))) ; do
650 ## put every scsi device into one single line
651 local DEVINFO="$(echo "$PROCSCSI" | head -n $(($i * 3)) | tail -n 3)"
652 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: fixdevfs: DEVINFO=$DEVINFO"
654 ## cut the type field, expect "Direct-Access" later.
655 local DEVTYPE="$(v=$(echo ${DEVINFO##*Type: }) ; echo ${v%% *})"
656 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: fixdevfs: DEVTYPE=$DEVTYPE"
658 if [ "$DEVTYPE" = "Direct-Access" ] ; then
659 ## Lets find out some more information
660 ## get the device id.
661 local DEVID="$(v=$(echo ${DEVINFO##*Id: }) ; n=$(echo ${v%% *}) ; echo ${n#*0})"
662 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: fixdevfs: DEVID=$DEVID"
664 ## get the device lun.
665 local DEVLUN="$(v=$(echo ${DEVINFO##*Lun: }) ; n=$(echo ${v%% *}) ; echo ${n#*0})"
666 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: fixdevfs: DEVLUN=$DEVLUN"
668 ## get the device channel.
669 local DEVCHAN="$(v=$(echo ${DEVINFO##*Channel: }) ; n=$(echo ${v%% *}) ; echo ${n#*0})"
670 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: fixdevfs: DEVCHAN=$DEVCHAN"
672 ## get the scsi host id.
673 local DEVHOST="$(v=$(echo ${DEVINFO##*Host: scsi}) ; echo ${v%% *})"
674 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: fixdevfs: DEVHOST=$DEVHOST"
676 local DEVCOUNT="$(($DEVCOUNT + 1))"
677 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: fixdevfs: DEVCOUNT=$DEVCOUNT"
678 if [ "$DEVHOST" = "$HOST" -a "$DEVCHAN" = "$BUS" -a \
679 "$DEVID" = "$TARGET" -a "$DEVLUN" = "$LUN" ] ; then
680 local DEV="sd$(smalltr $DEVCOUNT)${PARTNUM}"
686 echo 1>&2 "$PRG: $1: Unable to translate this device, try again without devfs."
690 echo 1>&2 "$PRG: Unknown bus $TYPE"
694 ## we should never get here
698 ## make sure that find, head and tail can be found. otherwise the
699 ## script will silently give bogus paths. these are the only /usr/*
700 ## utilities this script depends on.
703 if command -v find > /dev/null 2>&1 ; then
704 [ -x `command -v find` ] || FAIL=1 ; else FAIL=1 ; fi
705 if command -v head > /dev/null 2>&1 ; then
706 [ -x `command -v head` ] || FAIL=1 ; else FAIL=1 ; fi
707 if command -v tail > /dev/null 2>&1 ; then
708 [ -x `command -v tail` ] || FAIL=1 ; else FAIL=1 ; fi
710 if [ "$FAIL" = 1 ] ; then
711 echo 1>&2 "$PRG: \`find', \`head', or \`tail' could not be found, aborting."
718 ## parse command line switches.
719 if [ $# != 0 ] ; then
735 echo 1>&2 "$PRG: unrecognized option \`$1'"
736 echo 1>&2 "$PRG: Try \`$PRG --help' for more information."
740 echo 1>&2 "$PRG: You must specify a filename"
741 echo 1>&2 "Try \`$PRG --help' for more information."
751 echo 1>&2 "$PRG: You must specify a /dev device"
752 echo 1>&2 "Try \`$PRG --help' for more information."
756 ## check that FILE is a block device and exists.
757 if [ ! -e "$device" ] ; then
758 echo 1>&2 "$PRG: $device: No such file or directory"
760 elif [ ! -b "$device" ] ; then
761 echo 1>&2 "$PRG: $device is not a block device"
765 ## check that we are running on a GNU/Linux system, OSX/BSD does not
766 ## have the same /proc stuff
767 if [ `uname -s` != Linux ] ; then
768 echo 1>&2 "$PRG: This utility will only work with GNU/Linux"
772 ## check for ppc, i think uname -m is safe for this...
773 if [ `uname -m` != ppc ] ; then
774 echo 1>&2 "$PRG: This utility will only work on PowerPC hardware"
778 ## ofpath cannot live without procfs
779 if [ ! -f /proc/uptime ] ; then
780 echo 1>&2 "$PRG: This utility requires the /proc filesystem"
784 ## check for retarded devfs names and tell them to foad.
785 if ckdevfs "$device" ; then
786 device="$(fixdevfs $device)" || exit 1
789 ## check for newworld mac. use cat hack due to /proc wierdness.
790 if [ "$(v=`cat /proc/cpuinfo 2>/dev/null | grep pmac-generation` ; echo ${v##*:[ ]})" = NewWorld ] ; then
792 elif [ "$(v=`cat /proc/cpuinfo 2>/dev/null | grep pmac-generation` ; echo ${v##*:[ ]})" = OldWorld ] ; then
794 elif (cat /proc/cpuinfo 2>/dev/null | grep ^motherboard | grep -q AAPL) ; then
796 elif (cat /proc/cpuinfo 2> /dev/null | grep ^machine | grep -q 'CHRP IBM') ; then
799 echo 1>&2 "$PRG: This machine is not yet supported"
803 ## make sure /proc/device-tree exists
804 if [ ! -d /proc/device-tree ] ; then
805 echo 1>&2 "$PRG: /proc/device-tree does not exist"
806 echo 1>&2 "$PRG: Make sure you compiled your kernel with CONFIG_PROC_DEVICETREE=y"
810 ## make sure we have what we need.
813 ## get the base device node and scrap /dev/ ie /dev/hda2 -> hda
814 DEVICE="${device##*/}"
815 DEVNODE="${DEVICE%%[0-9]*}"
816 PARTITION="${DEVICE##*[a-z]}"
818 ## use appropriate search for right sub arch.