Re: udev? How so?
Hello Andrew,
On Sat, Aug 20, 2011 at 03:10:46AM -0400, Andrew wrote:
> Dear Filippo Valsorda,
>
> I don't understand. What are you suggesting I do with udev?
>
> -Andrew
>
> > Udev is the way to go. (I think ;) )
> > http://reactivated.net/writing_udev_rules.html
> >
> > ---
> > Filippo Valsorda
The knoppix terminalserver client (at least the default option) runs
completely on the client side, only the base system is mounted via NFS
from the DHCP/TFTP/NFS server containing the Knoppix CD or DVD.
This means that the server does not have to export any of its drives,
and all the hardware is handled locally on the (fat) client.
udev sets up /etc/fstab for local mounts via the "rebuildfstab" script
on device detection, and this is the point where you could add a
difference between fixed disks and removable ones. They are easy to
distinguish by checking the content of /sys/block/$device/removable. If
it equals "0", it's a fixed disk.
Alternately, you could add a script that sets fixed internal harddisks
and partitions (see above) to read-only via blockdev --setro $device,
for example in /etc/rc.local on the server, which will then be executed
on the clients on boot.
Regards
-Klaus
> > Il giorno 18/ago/2011, alle ore 13:55, "Andrew" <knoppix@rngresearch.com>
> > ha scritto:
> >
> >> Dear Klaus et al,
> >>
> >> I have some windows boxes and would like to use Knoppix terminalserver
> >> to
> >> provide a linux alternative. The users should have full access to any
> >> usb
> >> devices they plug in, but I do not want them to be able to (accidentally
> >> or intentionally) clobber the windows drives; they should only be
> >> mountable ro, or perhaps not mountable at all. The problem is that some
> >> of the machines have more than one hard disk, so I must prevent
> >> /dev/sdb1
> >> from being writable, but this prevents use of usb flash drives on the
> >> machines with only one hard disk!
> >>
> >> Any suggestions?
> >>
> >> -Andrew
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