Date: Wed, 23 Mar 2005 08:28:59 -0500 (EST)
From: linux-os <linux-os@analogic.com>
Reply-To: linux-os@analogic.com
To: linux lover <linux_lover2004@yahoo.com>
cc: linux-kernel@vger.kernel.org
Subject: Re: Accessing data structure from kernel space
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On Wed, 23 Mar 2005, linux lover wrote:

> Hello all,
>        I have one linked list data structure added to
> a file in kernel source code which has some kernel
> info. I want to acess that linked list structure from
> user space. Is that possible??
>        Also how to add own system call usable at user
> level from kernel module??
> regards,
> linux_lover.
>

Many people will tell you to use the /proc file-system.
I suggest you make a simple "character" driver and access
your kernel structure using ioctl() or mmap().

You don't add your own system call __ever__, even if you
are a long-time kernel developer. The current API already
has lots of standard interface capabilities. Thinking, even
for an instant, that you need more means that you don't
understand Unix/Linux.

Cheers,
Dick Johnson
Penguin : Linux version 2.6.11 on an i686 machine (5537.79 BogoMips).
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