From: "Salyzyn, Mark" <Mark_Salyzyn@adaptec.com>
To: "'linux-os (Dick Johnson)'" <linux-os@analogic.com>,
       "'mokhtar'" <mbmessaoud@yahoo.com>
CC: "'linux-kernel@vger.kernel.org'" <linux-kernel@vger.kernel.org>
Date: Fri, 18 Jan 2008 07:35:16 -0800
Subject: RE: Communication between user process and kernel modules
Thread-Topic: Communication between user process and kernel modules
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Message-ID: <532ABFBDAAC3A34EB12EBA6CEC2838F4391E89EC@ADPE2K703.adaptec.com>
References: <14947386.post@talk.nabble.com>
 <Pine.LNX.4.61.0801180954040.7389@chaos.analogic.com>
In-Reply-To: <Pine.LNX.4.61.0801180954040.7389@chaos.analogic.com>
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Other means of communications include sysfs and procfs. These have the advantage of supporting scripting and can survive ABI changes that can plague the other interfaces; but are meant for low-bandwidth or out-of-band configuration or simple status reporting.

Sincerely -- Mark Salyzyn

> -----Original Message-----
> From: linux-kernel-owner@vger.kernel.org
> [mailto:linux-kernel-owner@vger.kernel.org] On Behalf Of
> linux-os (Dick Johnson)
> Sent: Friday, January 18, 2008 9:59 AM
> To: mokhtar
> Cc: linux-kernel@vger.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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