linux-kernel - Re: Communication between user process and kernel modules

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Date:	Fri, 18 Jan 2008 09:59:07 -0500
From:	"linux-os (Dick Johnson)" <linux-os@...logic.com>
To:	"mokhtar" <mbmessaoud@...oo.com>
Cc:	<linux-kernel@...r.kernel.org>
Subject: Re: Communication between user process and kernel modules

On Fri, 18 Jan 2008, mokhtar wrote:

>
> Hi
>
> What are the different solution to make a user process communicate with a
> kernel modules?
>
> Whatis the the advantages and disadvanteges of each solutions ?
>

ioctl() is the universal Unix mechanism for control of drivers
(modules). open(), close(), read(), write(), mmap() are the other
common methods. Some drivers may use sockets for communications.
I such a case, you use setsockopt() to change things.

Drivers can signal user-space processes as well. Such programs
use select() and poll().

>
> --

Cheers,
Dick Johnson
Penguin : Linux version 2.6.22.1 on an i686 machine (5588.29 BogoMips).
My book : http://www.AbominableFirebug.com/
_

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