82832dce4e
git-svn-id: https://svn.code.sf.net/p/gphoto/code/trunk/libgphoto2@4501 67ed7778-7388-44ab-90cf-0a291f65f57c
56 lines
2.0 KiB
Bash
Executable File
56 lines
2.0 KiB
Bash
Executable File
#!/bin/bash
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# $Id$
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#
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# /etc/hotplug/usb/usbcam
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#
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# Sets up newly plugged in USB camera so that the user who owns
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# the console according to pam_console can access it from user space
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#
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# Note that for this script to work, you'll need all of the following:
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# a) a line in the file /etc/hotplug/usermap that corresponds to the
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# camera you are using. You can get the correct lines for all cameras
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# supported by gphoto2 by running "gphoto2 --print-usb-usermap".
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# b) a setup using pam_console creates the respective lock files
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# containing the name of the respective user. You can check for that
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# by executing "echo `cat /var/{run,lock}/console.lock`" and
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# verifying the appropriate user is mentioned somewhere there.
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# c) a Linux kernel supporting hotplug and usbdevfs
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# d) the hotplug package (http://linux-hotplug.sourceforge.net/)
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#
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# In the usermap file, the first field "usb module" should be named
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# "usbcam" like this script.
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#
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if [ "${ACTION}" = "add" ] && [ -f "${DEVICE}" ]
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then
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# New code, using lock files instead of /dev/console permissions
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# This also works with non-gdm logins (e.g. on a virtual terminal)
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# Idea and code from Nalin Dahyabhai <nalin@redhat.com>
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if [ -f /var/run/console.lock ]
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then
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CONSOLEOWNER=`cat /var/run/console.lock`
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elif [ -f /var/lock/console.lock ]
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then
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CONSOLEOWNER=`cat /var/lock/console.lock`
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else
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CONSOLEOWNER=
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fi
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if [ -n "$CONSOLEOWNER" ]
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then
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chown 0000 "${DEVICE}"
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chown "$CONSOLEOWNER" "${DEVICE}"
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chown 0600 "${DEVICE}"
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fi
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# old code, using traditional parameters and /dev/console permissions
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# user="$(ls -l /dev/console | awk '/\/dev\/console$/ { print $3; }')"
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# chown "${user}" "${DEVICE}"
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# chmod 0600 "${DEVICE}"
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# new code, using GNU style parameters and /dev/console permissions
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# CONSOLE="/dev/console"
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# chown 0000 "${DEVICE}" # precaution against possible race conditions
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# chown --reference "${CONSOLE}" "${DEVICE}"
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# chmod --reference "${CONSOLE}" "${DEVICE}"
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fi
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