Date: Tue, 22 Jun 2004 10:50:40 +0200
To: so usp <so_usp@yahoo.com.br>
Cc: linux-kernel@vger.kernel.org
Subject: Re: returning text from a system call
Message-ID: <20040622085040.GA31276@hh.idb.hist.no>
References: <20040621202702.91926.qmail@web90107.mail.scd.yahoo.com>
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From: Helge Hafting <helgehaf@aitel.hist.no>
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On Mon, Jun 21, 2004 at 05:27:02PM -0300, so usp wrote:
> Hi,
> 
> I'm implementing a system call, and I want to return
> information (text data) to the user without using the
> /var/log/messages (using the printk function). I've
> been thinking about writing in a file, but I really
> don't know how to manipulate files in kernel mode. The
> text could be returned to the command line as well,
> but I either don't know how to do that. Does anybody
> could help me how to return text (both ways would be
> good) from a system call?
> 

What is it you want to do exactly? What kind of text?

Consider making a device driver - a device driver
can return text to the program reading from the device.

If that doesn't fit your needs, consider creating a file
in /proc.


Helge Hafting
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