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Date:      Sat, 08 Dec 2001 10:04:18 +0100
From:      Poul-Henning Kamp <phk@critter.freebsd.dk>
To:        Dave Rufino <dr263@hermes.cam.ac.uk>
Cc:        Alfred Perlstein <bright@mu.org>, freebsd-hackers@FreeBSD.ORG
Subject:   Re: statefulness in character device drivers 
Message-ID:  <46358.1007802258@critter.freebsd.dk>
In-Reply-To: Your message of "Sat, 08 Dec 2001 09:02:08 GMT." <Pine.SOL.4.33.0112080900220.17158-100000@red.csi.cam.ac.uk> 

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In message <Pine.SOL.4.33.0112080900220.17158-100000@red.csi.cam.ac.uk>, Dave R
ufino writes:

>> Most likely he means a per-open(2) opaque datum that is kept in
>> struct file and passed to the underlying routines.
>
>Sorry, unbelievably bad at explaining myself. Per-open data is what i
>meant. The reason I'm interested is it would make a full nvidia driver
>port quite a bit easier.

Sorry, I know of no current plans which adress this.

The issue is non-trivial to fix because we currently don't pass
dup(2) events through the vnode layer.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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