From owner-freebsd-hackers@FreeBSD.ORG  Sat Sep 25 11:35:15 2004
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 2ED0716A4CE
	for <freebsd-hackers@freebsd.org>;
	Sat, 25 Sep 2004 11:35:15 +0000 (GMT)
Received: from smtp.des.no (flood.des.no [217.116.83.31])
	by mx1.FreeBSD.org (Postfix) with ESMTP id BFB3643D3F
	for <freebsd-hackers@freebsd.org>;
	Sat, 25 Sep 2004 11:35:14 +0000 (GMT)	(envelope-from des@des.no)
Received: by smtp.des.no (Pony Express, from userid 666)
	id CDE40534B; Sat, 25 Sep 2004 13:35:13 +0200 (CEST)
Received: from dwp.des.no (des.no [80.203.228.37])
	by smtp.des.no (Pony Express) with ESMTP id 422B05308;
	Sat, 25 Sep 2004 13:35:07 +0200 (CEST)
Received: by dwp.des.no (Postfix, from userid 2602)
	id 124C7B85E; Sat, 25 Sep 2004 13:35:07 +0200 (CEST)
To: Mike Meyer <mwm@mired.org>
References: <BAY1-F10eZZfm95LyRk00055aa3@hotmail.com>
	<16722.59709.451226.932084@guru.mired.org>
	<xzpekkrwsca.fsf@dwp.des.no> <20040925100740.GA814@empiric.icir.org>
From: des@des.no (=?iso-8859-1?q?Dag-Erling_Sm=F8rgrav?=)
Date: Sat, 25 Sep 2004 13:35:07 +0200
In-Reply-To: <20040925100740.GA814@empiric.icir.org> (Bruce M. Simpson's
 message of "Sat, 25 Sep 2004 03:07:40 -0700")
Message-ID: <xzpisa2twd0.fsf@dwp.des.no>
User-Agent: Gnus/5.1006 (Gnus v5.10.6) Emacs/21.3 (berkeley-unix)
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable
X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on flood.des.no
X-Spam-Level: 
X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.63
cc: bzeeb-lists@lists.zabbadoz.net
cc: Gordon David <kylincsos@hotmail.com>
cc: freebsd-hackers@freebsd.org
Subject: Re: execute a user process in the kernel
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 25 Sep 2004 11:35:15 -0000

Bruce M Simpson <bms@spc.org> writes:
> On Fri, Sep 24, 2004 at 06:21:25PM +0200, Dag-Erling Sm=F8rgrav wrote:
> > You could, of course, write a kernel API for creating processes from
> > scratch.  They'd still need a parent, but you can use init(8) (pid 1)
> > for that.
> If we were to implement POSIX spawn(), we'd need something like this.

Uh, no.  posix_spawn(3) can be implemented entirely in userland and
does not require any special kernel support.

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