From owner-freebsd-hackers@FreeBSD.ORG  Mon Oct 27 07:37:21 2003
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 A940B16A4B3
	for <freebsd-hackers@freebsd.org>;
	Mon, 27 Oct 2003 07:37:21 -0800 (PST)
Received: from mindfields.energyhq.es.eu.org
	(73.Red-213-97-200.pooles.rima-tde.net [213.97.200.73])
	by mx1.FreeBSD.org (Postfix) with ESMTP id A711543FAF
	for <freebsd-hackers@freebsd.org>;
	Mon, 27 Oct 2003 07:37:16 -0800 (PST)
	(envelope-from flynn@energyhq.es.eu.org)
Received: from scienide.energyhq.es.eu.org (scienide.energyhq.es.eu.org
	[192.168.100.1])	by mindfields.energyhq.es.eu.org (Postfix) with SMTP
	id D55B735782; Mon, 27 Oct 2003 16:36:57 +0100 (CET)
Date: Mon, 27 Oct 2003 16:36:58 +0100
From: Miguel Mendez <flynn@energyhq.es.eu.org>
To: "Dan Langille" <dan@langille.org>
Message-Id: <20031027163658.5d5af160.flynn@energyhq.es.eu.org>
In-Reply-To: <3F9CF3F6.8307.ABC1250@localhost>
References: <3F9CF3F6.8307.ABC1250@localhost>
Organization: 
X-Mailer: Sylpheed version 0.9.5-gtk2-20030906 (GTK+ 2.2.4;
	i386-portbld-freebsd5.1)
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
cc: freebsd-hackers@freebsd.org
Subject: Re: non-root process and PID files
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: Mon, 27 Oct 2003 15:37:21 -0000

Dixitur illum "Dan Langille" <dan@langille.org> scribere...

Hi,

> If a process starts up and does a setuid, should it be writing the 
> PID file before or after the setuid?
> 
> Two methods exists AFAIK:
> 
> 1 - write your PID immediately, and the file is chown root:wheel

OpenBSD seems to favor this approach, if that tells you something.

[...]
-rw-r--r--   1 root  wheel      6 Oct 10 21:17 mountd.pid
-rw-r--r--   1 root  wheel      5 Oct 10 21:17 named.pid
-rw-r--r--   1 root  wheel     20 Oct 12 22:13 nmbd.pid
-rw-r--r--   1 root  wheel      5 Oct 10 21:17 ntpd.pid
-rw-r--r--   1 root  wheel      6 Oct 10 21:17 pflogd.pid
-rw-r--r--   1 root  wheel      5 Oct 11 10:15 rtadvd.pid
-rw-r--r--   1 root  wheel     20 Oct 12 22:13 smbd.pid
-rw-r--r--   1 root  wheel      6 Oct 10 21:17 sshd.pid
-rw-r--r--   1 root  wheel      6 Oct 10 21:17 syslog.pid
[...]

> Of the two, I think #1 is cleaner as it does not require another 
> directory with special permissions.

Agreed.

Cheers,

----
	Miguel Mendez
	http://www.energyhq.es.eu.org