Re: File access

[Muli Ben-Yehuda]

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. 
> > 
> > I cannot seem to find any information on accessing files via a kernel 
> > module.
> > 
> > Is this possible and if so how is it done ?
> 
>   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. 
-- 
Muli Ben-Yehuda
http://www.mulix.org

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