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

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Message-ID: <532ABFBDAAC3A34EB12EBA6CEC2838F4391E89EC@ADPE2K703.adaptec.com>
Date:	Fri, 18 Jan 2008 07:35:16 -0800
From:	"Salyzyn, Mark" <Mark_Salyzyn@...ptec.com>
To:	"'linux-os (Dick Johnson)'" <linux-os@...logic.com>,
	'mokhtar' <mbmessaoud@...oo.com>
CC:	"'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>
Subject: RE: Communication between user process and kernel modules

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