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Date: Wed, 22 Sep 2004 23:17:24 -0700
From: Chris Pressey <cpressey@catseye.mine.nu>
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cc: kylincsos@hotmail.com
Subject: Re: execute a user process in the kernel
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On Wed, 22 Sep 2004 18:46:49 -0400
Allan Fields <bsd@afields.ca> wrote:

> On Wed, Sep 22, 2004 at 08:49:11AM +0000, Gordon David wrote:
> > Hello,
> > 
> > I have a question. Anyone would like to tell me how to execute a
> > user process or shell script in the kernel?
> 
> You probably really don't want to do this and if you do, there is
> likely a better approach.

Reading between the lines and guessing - here's what you can do:

Write a userland program that (1) reads /dev/fooctl, (2) does something
based on what it got from /dev/fooctl, and (3) goes back to step (1).

Then write a kernel driver that produces output on /dev/fooctl every
time it wants the userland program to do something.

This achieves the effect you (probably) want while maintaining the
seperation between kernel and userland.

HTH,
-Chris