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82 lines
1.5 KiB
82 lines
1.5 KiB
#!/bin/sh -e
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# Inspired from a script by Remco <remco@d-compu.dyndns.org>.
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# Support for /dev/discs/* and /dev/cdroms/* by Daniel Mueller <danm@gmx.li>.
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#
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# BUS="scsi", PROGRAM="/etc/udev/scsi-devfs.sh %k %b %n", \
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# NAME="%c{1}", SYMLINK="%k %c{2}"
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get_ide_offset() {
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local num=0
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local dev
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for dev in /proc/ide/*/media; do
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if [ "`cat $dev`" = "$1" ]; then
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num=$(($num + 1))
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fi
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done
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echo $num
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}
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get_next_number() {
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local num=0
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local dev
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local offset=`get_ide_offset $2`
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if [ "$2" = "disk" ]; then
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local DRIVE="${1%%[0-9]*}"
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local DEVLIST="/sys/block/sd*"
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else
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local DRIVE=$1
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local DEVLIST="/sys/block/sr*"
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fi
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for dev in $DEVLIST; do
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[ "${dev#/sys/block/}" = "$DRIVE" ] && break
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num=$(($num + 1))
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done
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echo $(($offset + $num))
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}
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# the format is "HOST:BUS:TARGET:LUN"
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SCSI_ID=$2
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HOST=${SCSI_ID%%:*}
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SCSI_ID=${SCSI_ID#*:}
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BUS=${SCSI_ID%%:*}
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SCSI_ID=${SCSI_ID#*:}
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TARGET=${SCSI_ID%%:*}
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SCSI_ID=${SCSI_ID#*:}
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LUN=$SCSI_ID
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case "$1" in
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scd*|sr*)
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# CDROM/DVD
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NAME=cd
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LINK="cdroms/cdrom"`get_next_number $1 cdrom`
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;;
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sd*)
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if [ "$3" ]; then
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NAME=part$3
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LINK="discs/disc"`get_next_number $1 disk`/part${3}
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else
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NAME=disc
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LINK="discs/disc"`get_next_number $1 disk`/disc
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fi
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;;
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nst*)
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NAME=$(echo "$1" | sed -e 's/nst0m/nmt/')
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[ $NAME = "mt0" ] && LINK=ntape
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;;
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st*)
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NAME=$(echo "$1" | sed -e 's/st0m/mt/')
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[ $NAME = "mt0" ] && LINK=tape
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;;
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sg*|*)
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NAME=generic
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;;
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esac
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echo scsi/host$HOST/bus$BUS/target$TARGET/lun$LUN/$NAME $LINK
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exit 0
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