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|
#! /bin/sh -e
TYPE="$1"
case $TYPE in
cd|disk|partition|floppy|maybe-floppy|maybe-usb-floppy) ;;
*)
echo "Usage: $0 cd|disk|partition|floppy|maybe-floppy|maybe-usb-floppy" >&2
exit 2
;;
esac
if [ -d /sys/block ] && type udevinfo >/dev/null 2>&1; then
syspaths=
case $TYPE in
partition)
for x in /sys/block/*/*; do
[ -d "$x" ] || continue
syspaths="${syspaths:+$syspaths }$x"
done
TYPE=disk
;;
*)
for x in /sys/block/*; do
[ -d "$x" ] || continue
syspaths="${syspaths:+$syspaths }$x"
done
;;
esac
for x in $syspaths; do
devpath="${x#/sys}"
match=false
case $TYPE in
maybe-floppy)
TYPE=floppy
;;
esac
case $TYPE in
floppy)
# TODO ugly special case for non-IDE floppies
case $devpath in
/block/fd[0-9]*)
match=:
;;
esac
;;
esac
# Some USB sticks and CD drives are misdetected as floppy
# This allows to scan for those
if ! $match && [ "$TYPE" = maybe-usb-floppy ]; then
if udevinfo -q env -p "$devpath" 2>/dev/null | \
grep -q '^ID_BUS=usb' && \
udevinfo -q env -p "$devpath" 2>/dev/null | \
grep -q '^ID_TYPE=floppy'; then
match=:
fi
fi
if ! $match && [ "$TYPE" = cd ]; then
if udevinfo -q env -p "$devpath" 2>/dev/null | \
grep -q '^ID_CDROM='; then
match=:
fi
fi
if ! $match; then
if udevinfo -q env -p "$devpath" 2>/dev/null | \
grep -q "^ID_TYPE=$TYPE"; then
match=:
fi
fi
if ! $match && [ "$TYPE" = disk ]; then
case $devpath in
/block/cciss\!*|/block/ida\!*|/block/rd\!*)
match=:
;;
esac
fi
if $match; then
if ! name="$(udevinfo -q name -p "$devpath" \
2>/dev/null)"; then
name="$(printf %s "${devpath##*/}" | \
sed 's,!,/,g')"
fi
echo "/dev/$name"
fi
done
else
case $TYPE in
cd)
if [ -d /dev/cdroms ]; then
find /dev/cdroms -type b
fi
;;
disk)
if [ -d /dev/discs ]; then
# busybox find has no -maxdepth
find /dev/discs -type b | \
grep -v '/.*/.*/.*/' || true
fi
;;
partition)
if [ -d /dev/discs ]; then
# busybox find has no -mindepth
find /dev/discs -type b | \
grep '/.*/.*/.*/' || true
fi
;;
floppy)
if [ -d /dev/floppy ]; then
find /dev/floppy -type b
fi
;;
maybe-floppy)
# Without udev, we can't necessarily tell floppies
# from other kinds of disks, so we have to offer
# everything.
for x in /dev/floppy /dev/scsi /dev/ide /dev/discs; do
if [ -d "$x" ]; then
find "$x" -type b
fi
done
;;
esac
fi
|
