#!/bin/bash
# $Id: usbcam.console,v 1.2 2001/10/28 20:32:55 hun Exp $
#
# /etc/hotplug/usb/usbcam
#
# Sets up newly plugged in USB camera so that the user who owns
# /dev/console can access it from user space
#
# Note that for this script to work, you'll need all of the following:
# a) a line in the file /etc/hotplug/usermap that corresponds to the 
#    camera you are using. You can get the correct lines for all cameras 
#    supported by gphoto2 by running "gphoto2 --print-usb-usermap".
# b) a setup using pam_console that chown's /dev/console to the 
#    user currently using the "console"
# c) a Linux kernel supporting hotplug and usbdevfs
# d) the hotplug package (http://linux-hotplug.sourceforge.net/)
#
# In the usermap file, the first field "usb module" should be named 
# "usbcam" like this script.
# 

if [ "${ACTION}" = "add" ] && [ -f "${DEVICE}" ]
then
    # old code, using traditional parameters
    # user="$(ls -l /dev/console | awk '/\/dev\/console$/ { print $3; }')"
    # chown "${user}" "${DEVICE}"
    # chmod 0600 "${DEVICE}"

    # new code, using GNU style parameters
    CONSOLE="/dev/console"
    chown 0000 "${DEVICE}" # precaution against possible race conditions
    chown --reference "${CONSOLE}" "${DEVICE}"
    chmod --reference "${CONSOLE}" "${DEVICE}"
fi