[sane-devel] USB kernel scanner driver

[Henning Meier-Geinitz]

Hi,

On Wed, Oct 23, 2002 at 09:01:58PM +0400, Sergey Vlasov wrote:
> > How would one restrict access so that although a user can scan, they
> > can't fiddle with the USB hard drive or CD-ROM or automatic
> > nuclear-weapon detonator?
> 
> This is trickier. Looks like the hotplug scripts are able to do this,
> however, this needs some tweaks...

Not that complicated either. Create e.g.
/etc/hotplug/usb/foo.usermap containing all the devices that you
want to be able to chmod. Use "foo" as module name. Add a script
"foo" to /etc/hotplug/usb like this one:

#!/bin/sh
if test "$ACTION" = "add" ; then
  chmod a+rw $DEVICE
# chgrp scanner $DEVICE
# chmod g+rw $DEVICE
# ...
fi

Bye,
  Henning