[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Questions about the device driver framework

From: Bas Wijnen
Subject: Re: Questions about the device driver framework
Date: Fri, 21 Jan 2005 12:00:13 +0100
User-agent: Debian Thunderbird 1.0 (X11/20050116)

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)?


I encourage people to send encrypted e-mail (see http://www.gnupg.org).
If you have problems reading my e-mail, use a better reader.
Please send the central message of e-mails as plain text
   in the message body, not as HTML and definitely not as MS Word.
Please do not use the MS Word format for attachments either.
For more information, see

Attachment: signature.asc
Description: OpenPGP digital signature

reply via email to

[Prev in Thread] Current Thread [Next in Thread]