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Date:      Fri, 7 Jun 1996 15:07:19 -0600
From:      Nate Williams <nate@sri.MT.net>
To:        Paul Traina <pst@shockwave.com>
Cc:        Nate Williams <nate@sri.MT.net>, Barnacle Wes <softweyr@xmission.com>, security@freebsd.org
Subject:   Re: FreeBSD's /var/mail permissions 
Message-ID:  <199606072107.PAA00612@rocky.sri.MT.net>
In-Reply-To: <199606072105.OAA00533@precipice.shockwave.com>
References:  <199606071948.NAA00227@rocky.sri.MT.net> <199606072105.OAA00533@precipice.shockwave.com>

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> Mail locking, to be effective, must be soley performed through the use of
> the flock() call on the mail file itself.
> 
> Locking schemes relying on other mechanisms are not effective.

Locking schemes relying on flock() are not effective either, so that's
why most MUA's I know of use lock files.

You'll have to convince *them* that flock() is adequate, although I've
yet to be convinced as well.  'flock()' is broken on too many systems to
be considered reliable.


Nate



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