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Date: Mon, 02 Jun 1997 11:12:13 -0700
From: Julian Elischer <julian@whistle.com>
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To: Peter Wemm <peter@spinner.dialix.com.au>
CC: =?KOI8-R?B?4c7E0sXKIP7F0s7P1w==?= <ache@nagual.pp.ru>,
        Adam David <adam@veda.is>, cvs-committers@FreeBSD.ORG,
        cvs-all@FreeBSD.ORG, cvs-etc@FreeBSD.ORG
Subject: Re: cvs commit: src/etc rc
References: <199706021803.CAA27545@spinner.dialix.com.au>
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Peter Wemm wrote:

> Gated uses a flock() lock on it's pid file as the "lock", the existance of
> the file does not imply that it's valid.  So, things like gdc etc try and
> do a conflicting lock request which should succeed if gated is not runni
> ng, and should fail if it is there.  But doing this for other daemons
> requires code changes in each one.
> 

I seem to remember old UUCP (syV)
did an open in O_EXCL mode or something..
(you could always make a PIDfile that was a fifo..)