workspace/kcontrol/input/consoleUserPerms

   1 #!/bin/bash
   2 #
   3 # /etc/hotplug/usb/consoleUserPerms
   4 #
   5 # Sets up newly plugged in USB device so that the user who owns
   6 # the console according to pam_console can access it from user space
   7 #
   8 # Note that for this script to work, you'll need all of the following:
   9 # a) a line in the file /etc/hotplug/usb.usermap or another usermap file
  10 #    in /etc/hotplug/usb/ that corresponds to the device you are using.
  11 # b) a setup using pam_console creates the respective lock files
  12 #    containing the name of the respective user. You can check for that
  13 #    by executing "echo `cat /var/{run,lock}/console.lock`" and
  14 #    verifying the appropriate user is mentioned somewhere there.
  15 # c) a Linux kernel supporting hotplug and usbdevfs
  16 # d) the hotplug package (http://linux-hotplug.sourceforge.net/)
  17 #
  18 # In the usermap file, the first field "usb module" should be named
  19 # "consoleUserPerms" to invoke this script.
  20 #
  21
  22 if [ "${ACTION}" = "add" ] && [ -f "${DEVICE}" ]
  23 then
  24     # New code, using lock files instead of copying /dev/console permissions
  25     # This also works with non-kdm logins (e.g. on a virtual terminal)
  26     # Idea and code from Nalin Dahyabhai <nalin@redhat.com>
  27     if [ -f /var/run/console.lock ]
  28     then
  29         CONSOLEOWNER=`cat /var/run/console.lock`
  30     elif [ -f /var/lock/console.lock ]
  31     then
  32         CONSOLEOWNER=`cat /var/lock/console.lock`
  33     else
  34         CONSOLEOWNER=
  35     fi
  36     if [ -n "$CONSOLEOWNER" ]
  37     then
  38         chmod 0000 "${DEVICE}"
  39         chown "$CONSOLEOWNER" "${DEVICE}"
  40         chmod 0600 "${DEVICE}"
  41     fi
  42 fi