Date: Tue, 29 Oct 1996 16:24:44 +0100 (MET) From: J Wunsch <j@uriah.heep.sax.de> To: MRC@CAC.Washington.EDU (Mark Crispin) Cc: roberto@keltia.freenix.fr, current@FreeBSD.org, scrappy@ki.net Subject: Re: /var/mail (was: re: Help, permission problems...) Message-ID: <199610291524.QAA05144@uriah.heep.sax.de> In-Reply-To: <MailManager.846571671.12487.mrc@Tomobiki-Cho.CAC.Washington.EDU> from Mark Crispin at "Oct 28, 96 10:47:51 pm"
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As Mark Crispin wrote: > c) fcntl() locking is not respected by many mail programs. Virtually > all programs respect .lock files. Except for mail.local, the basic mail deliverer in the first place. Since all the locking is advisory, you are basically bound to what the mail delivery tool uses. You've got no other choice. All the .lock files will lock the various mail readers very fine -- but nobody uses multiple mail readers simultaneously. The .lock files won't prevent mail.local from delivering new mail -- hence they're useless. > flock() locking does not work over NFS at all. Only since our lockd is not yet ready. It is supposed to work with NFS, too. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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