Run script when USB scanner unplugged

[Ian Pilcher <i.pilcher@comcast.net>]

Running Fedora Core 2 here.  I've found that the hotplug scripts shipped
with the distribution do a fine job of setting the permissions when a
USB scanner is plugged in *after* a user has logged in.  Unfortunately,
this is not the most common usage scenario; I leave my scanner plugged
in pretty much all the time, and I suspect that most other users do the
same.

What's needed, at least on Red Hat/Fedora Core systems, is a symlink
which will tell PAM to adjust the permissions when a "console" user logs
in.  I've hacked /etc/hotplug/usb/libusbscanner to do the following when
a scanner is plugged in:

     DEVID="${REMOVER#/var/run/usb/}"
     rm -f "/dev/usb/scanner-${DEVID}"
     ln -s "${DEVICE}" "/dev/usb/scanner-${DEVID}"

So far so good.  The link is created when the system boots, and PAM
follows it and sets the device permissions properly when a "console
user" logs in.

Now I want to remove the link when (if) the scanner is unplugged.  I've
tried adding an 'if [ "${ACTION}" = "remove ]' section to
/etc/hotplug/usb/libusbscanner, but that script doesn't appear to get
executed when a USB scanner is unplugged.

What do I need to do?

Thanks!

-- 
====================================
Ian Pilcher                                        i.pilcher@comcast.net
====================================



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