Date: Thu, 14 Aug 2003 15:28:02 +0300
From: Muli Ben-Yehuda <mulix@mulix.org>
To: Simon Haynes <simon@baydel.com>
Cc: Matti Aarnio <matti.aarnio@zmailer.org>, linux-kernel@vger.kernel.org
Subject: Re: File access
Message-ID: <20030814122802.GC7387@actcom.co.il>
References: <67597854DA5@baydel.com> <20030814121917.GX6898@mea-ext.zmailer.org>
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On Thu, Aug 14, 2003 at 03:19:17PM +0300, Matti Aarnio wrote:
> On Thu, Aug 14, 2003 at 12:32:18PM +0100, Simon Haynes wrote:
> > I am currently developing a module which I would like to configure
> > via a simple text file.=20
> >=20
> > I cannot seem to find any information on accessing files via a kernel=
=20
> > module.
> >=20
> > Is this possible and if so how is it done ?
>=20
>   Yes, but it is rather complicated business, and really should not
>   be done in kernel.   It can be done, but like Richard said, defining
>   your own set of IOCTLs for the device is better.  The complicated
>   configuration file parsing can then reside in the user-space utility
>   program.

Indeed, do it in user space. But don't use ioctl unless it fits the
problem better than the other solutions. Use read / write on a device
file, or a special purpose file system, or sysfs, or even /proc. The
exact mechanism you should use depends on the nature of the user space
- kernel space communications.=20
--=20
Muli Ben-Yehuda
http://www.mulix.org


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