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To: Robert Watson <rwatson@freebsd.org>
References: <Pine.NEB.3.96L.1040924140940.82478L-100000@fledge.watson.org>
From: des@des.no (=?iso-8859-1?q?Dag-Erling_Sm=F8rgrav?=)
Date: Fri, 24 Sep 2004 21:20:21 +0200
In-Reply-To: <Pine.NEB.3.96L.1040924140940.82478L-100000@fledge.watson.org>
	(Robert Watson's message of "Fri, 24 Sep 2004 14:11:19 -0400 (EDT)")
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cc: bzeeb-lists@lists.zabbadoz.net
cc: Mike Meyer <mwm@mired.org>
cc: Gordon David <kylincsos@hotmail.com>
cc: freebsd-hackers@freebsd.org
Subject: Re: execute a user process in the kernel
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Robert Watson <rwatson@freebsd.org> writes:
> Well, we have kproc/kthread APIs, but none of that is semantically
> compatible with the notion of execve(), which is a very user-centric
> concept ("replace the address space with a mapping of binary <x>").  You
> could fudge together a related notion, though, involving loadable kernel
> modules that have a main() routine run from a thread.  That said, the
> notion of simply running user code in kernel (as has been pointed out) is
> fraught with peril, primarily because the kernel is basically one big
> program with many special requirements, and user applications are written
> with the assumption that they are the only program, not running in the
> context of another program.

I believe the OP actually wanted the kernel to spawn a userland
process, but I may have misunderstood.

DES
--=20
Dag-Erling Sm=F8rgrav - des@des.no