#!/bin/bash
# Steven Shiau <steven@nchc.org.tw>
# License: GPL
# This works in kernel 2.4, it's ok in kernel 2.6 with proc filesystem.
for i in /proc/ide/hd*; do
  if [ -e "$i" ]; then
    media=`cat $i/media` 
    [ "$media" = "cdrom" ] && cdrom=`basename $i`
  fi
done
if grep -q "$cdrom=ide-scsi" /proc/cmdline; then
  # make sure it simulated SCSI
  [ -e "/proc/scsi/ide-scsi/0" ] && cdrom="scd0"
fi
[ -n "$cdrom" ] && echo "$cdrom"
