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Date:      Sat, 20 Sep 1997 11:32:17 -0600 (MDT)
From:      Nate Williams <nate@mt.sri.com>
To:        "Jamil J. Weatherbee" <jamil@counterintelligence.ml.org>
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: UserLand Device Driver Thingys
Message-ID:  <199709201732.LAA24068@rocky.mt.sri.com>
In-Reply-To: <Pine.BSF.3.96.970919194628.263C-100000@counterintelligence.ml.org>
References:  <Pine.BSF.3.96.970919194628.263C-100000@counterintelligence.ml.org>

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> Why is it so impossible to have an arbitruary interrupt passed to a
> userland process, very much like a signal?

It's not impossible, it's too darn slow crossing so many boundaries?
And, you *never* want an userland program to call cli.

> It would be nice to be able to
> write device drivers that could open sockets and make data available on
> the network in an arbitruary way.

See the 'tun' device, it does this for you already.


Nate



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