I don't know if you've already had a look at usbfs - maybe something there 
that would help.

Have a look around here (if you haven't already):

http://www.linux-usb.org/USB-guide/c607.html

Regards
Sergio


> hgraf wrote:
> 
> > Another interesting question...
> > 
> > I've created some hardware to emulate an IDE hard drive. I've connected
> > this emulated drive to a computer using a USB2.0-PATA bridge.
> > 
> > It works well, however, due to the way things need to work it would make
> > my life easier if I could prevent the OS from writing to my "drive".
> > 
> > Is there a way under linux (Ubuntu 7.10) to cause a USB hard drive to be
> > mounted read-only (it's currently being auto mounted, I don't want my
> > changes to have any effect on other USB drives being mounted)? Is there
> > something in the identify drive data that a hard drive returns that I
> > can set to cause the hard drive to be read only (I can change anything
> > there I want)?
> > 
> > Again, I've googled, but haven't really come up with anything.
> > 
> > Thanks for any pointers.
> > 
> > TTYL
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