#!/bin/sh
 # this script is automatically called by hotplug at each plug/unplug event
 of an usb-storage device. (usb keys, mp3 jukeboxes, digital cameras...)
 modprobe /dev/scsi
 # first version by Christophe Combelles (ccomb.free.fr)
 # tuned/modified/debugged by myself

 # list devices of type usb-storage, i.e., all devices that are supported by
 the usb mass-storage driver (usb keys, mp3 stick, APN, etc...)
 list=`find /proc/scsi -type f|grep usb-storage`

 for i in $list; do
 # for each device, get infos
 vendor=`cat $i |grep Vendor:|sed 's/ *Vendor: *//g'|sed 's/ /_/g'`
 product=`cat $i |grep Product:|sed 's/ *Product: *//g'|sed 's/ /_/g'`
 host=`cat $i |grep Host|cut -c13`
 guid=`cat $i |grep GUID:|sed 's/ *GUID: *//g'|sed 's/ /_/g'`
 attached=`cat $i |grep Attached:|cut -c16`

 #here, a workaround for my XDrive II (by Vosonic) that shows no Vendor
 name
 if [ "$guid" == "0d7d127000000a3703002602" ]; then
 vendor="xdrive"
 fi

 # find partitions in /dev/scsi/host${host}
 partitions=`find /dev/scsi/host${host} -type b -name "part*"`

 # if not attached, remove !
 if [ "${attached}" = "N" ]; then
 #umount the device if it's no more atached, since scsiadd can't work
 properly if the device is still mounted
 #the following scsiadd commands might me replaced by the original
 ones if it works with devices unmounted
 #The device is not attached, so we check whether device is mounted
 yet
 #mounted.device contains full path of mounted but not attached
 usb-storage devices
 mount | grep "/dev/scsi/host${host}" | cut -f 1 -d " " >
 /etc/mounted.devices
 for i in `cat /etc/mounted.devices`; do
 bus=`echo "$i" | cut -b 20`
 target=`echo "$i" | cut -b 28`
 lun=`echo "$i" | cut -b 33`
 umount "$i"
 #previously, this command was something like echo "scsi
 remove-single-device ${host}" > /proc/scsi
 #doesn't work on my debian, so i replaced it by scsiadd -r command
 scsiadd -r ${host} ${bus} ${target} ${lun} > /dev/null
 done
 rm /etc/mounted.devices

 #partitions is set to "none" to enter in the "for p in..." loop and
 update fstab and /mnt
 partitions="none"
 else
 # if attached and no partitions, add the device to the scsi chain.
 if [ -z "${partitions}" ]; then
 #same comment as previously for scsiadd
 scsiadd ${host} 0 0 0 > /dev/null
 timeout=20
 # now we can detect partitions
 while [ -z "${partitions}" ]; do
 timeout=$((${timeout}-1))
 sleep 1
 partitions=`find /dev/scsi/host${host} -type b -name "part*"`
 if [ ${timeout} -eq 0 ]; then
 partitions="none"
 continue
 fi
 done
 fi
 fi

 #for each partition, create a mountpoint and an fstab entry
 for p in ${partitions}; do
 # create a mountpoint name
 if [ `echo ${partitions}|wc -w` -eq 1 ]; then
 partnum=""
 else
 partnum="_`basename $p`"
 fi
 if [ "${vendor}" = "${product}" ]; then
 mntpoint=/mnt/${vendor}
 else
 mntpoint=/mnt/${vendor}${partnum}
 fi
 # create the mountpoint and the fstab entry
 if [ "${attached}" = "Y" ]; then
 if [ "$p" = "none" ]; then
 exit
 fi
 if [ ! -d ${mntpoint} ]; then
 mkdir ${mntpoint}
 fi
 if ! grep "$p ${mntpoint} auto umask=000,user,rw,sync 0 0"
 /etc/fstab >/dev/null 2>&1; then
 echo "$p ${mntpoint} auto umask=000,user,rw,sync 0 0" >>
 /etc/fstab
 mount -a
 fi
 #mount the device, even if the mountpoint was already in the
 fstab
 mount ${mntpoint}
 else #the device is not attached
 #purge fstab and /mnt
 if [ -d ${mntpoint} ]; then
 rmdir ${mntpoint}
 fi
 cat /etc/fstab | grep -v "$mntpoint" > /etc/fstab.updated
 if diff /etc/fstab /etc/fstab.updated >/dev/null ; then
 rm /etc/fstab.updated
 else
 if [ -s /etc/fstab.updated ]; then
 cat /etc/fstab.updated > /etc/fstab
 mount -a
 fi
 rm /etc/fstab.updated
 fi
 fi
 done
 done