contrib/barry-unbind-storage.sh

   1 #!/bin/sh
   2 #
   3 # Unbinding usb-storage from the BlackBarry.
   4 #
   5 #   Copyright (C) 2008  Niels de Vos <nixpanic@users.sourceforge.net>
   6 #
   7 #   This program is free software; you can redistribute it and/or modify
   8 #   it under the terms of the GNU General Public License as published by
   9 #   the Free Software Foundation; either version 2 of the License, or
  10 #   (at your option) any later version.
  11 #
  12 #   This program is distributed in the hope that it will be useful,
  13 #   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 #   GNU General Public License for more details.
  16 #
  17 #   You should have received a copy of the GNU General Public License
  18 #   along with this program; if not, write to the Free Software
  19 #   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20 #
  21 #
  22 # Disconnecting the BlackBerry from usb-storage is needed as btool needs to
  23 # change the active USB-configuration.
  24 #
  25 # This script searched for any usb-storage devices and disconnects the
  26 # device from the usb-storage driver. The driver kept loaded and therefore
  27 # the barry-tools do not influence other usb-storage devices anymore.
  28 #
  29 # To enable debugging, use "export DEBUG=1" before execting this script.
  30 #
  31
  32 # vendor as deteced by sd_mod (regex regex for egrep)
  33 SD_VENDOR='^RIM[[:space:]]*$'
  34 # vendor as detected by usb-vendorId (regex for egrep)
  35 USB_VENDOR='^0fca$'
  36
  37 # the sysfs-file for disconnecting the device from usb-storage
  38 USB_STORAGE_UNBIND='/sys/bus/usb/drivers/usb-storage/unbind'
  39
  40
  41 # enable debugging with "export DEBUG=1"
  42 function debug()
  43 {
  44         [ -n "${DEBUG}" ] && echo "${@}" >&2
  45         return 0
  46 }
  47
  48
  49 # find all vendor files (SCSI-specific) for USB-devices -> usb-storage
  50 USB_STORAGE_VENDORS=$(find /sys/devices -name vendor -path '*/usb*/host*/target*')
  51
  52 for USB_STORAGE_VENDOR in ${USB_STORAGE_VENDORS}
  53 do
  54         # check if the file contains 'RIM' (file provided by sd_mod)
  55         if ! egrep -q "${SD_VENDOR}" "${USB_STORAGE_VENDOR}"
  56         then
  57                 debug "device is not produced by ${SD_VENDOR}"
  58                 continue
  59         fi
  60
  61         # find the vendorId (file provided by usbcore)
  62         # a subdirectory on the same level as idVendor contains the important
  63         # usb-device-id (the id looks like 4-1:1.0)
  64         USB_IDVENDOR="${USB_STORAGE_VENDOR}"
  65         while [ ! -e "${USB_IDVENDOR}/../idVendor" ]
  66         do
  67                 # go on with the parent directory
  68                 USB_IDVENDOR=$(dirname "${USB_IDVENDOR}")
  69         done
  70         # the unique usb-device-id (for usb-storage) is on this level
  71         USB_DEVID=$(basename "${USB_IDVENDOR}")
  72         USB_IDVENDOR="${USB_IDVENDOR}/../idVendor"
  73
  74         # check if the file contains '0fca' (the RIM USB-vendorId)
  75         if ! egrep -q "${USB_VENDOR}" "${USB_IDVENDOR}"
  76         then
  77                 debug "device does not have USB-vendorId ${USB_VENDOR}"
  78                 break
  79         fi
  80
  81         # found+verified all needed info, now do the disconnect!
  82         debug "going to unbind ${USB_DEVID} from usb-storage"
  83         echo -n "${USB_DEVID}" > "${USB_STORAGE_UNBIND}"
  84 done
  85