Re: Questions about the device driver framework

[Bas Wijnen]

Daniel Wagner wrote:
> > Does all drivers trust each other?
>
>
> Nope they don't have to but at some point its getting a bit tiresome
> not to trust the device drivers.  Of course you have to be careful
> from where new drivers are loaded but as soon a driver gets active in
> the ddf it has access to all hardware resources.  So there is no point
> in creating a 'secure' environment.

Are you saying that if I want to write a driver which needs, say, some
i/o ports and an interrupt, it will automatically be allowed to use
everything?  That doesn't sound like a very good idea...  I hope that
the idea then is to make those hardware drivers as simple as possible,
so the actual "meat" of the driver (which contains policy) can be
written by a mortal user (who must of course has access to the device file)?

Thanks,
Bas

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