mush 7.2.3 looses mail on NFS !

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Article #626

#626

From: Christoph von Stuckrad
Date: Thu, 08 Oct 1992 10:17

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Hello!

I just tried to install mush and tracing it found out,
that it (like most mail-readers it seems) does not
lock mail-spool-files over nfs (!) so incoming
messages during updates of the incoming mailbox
will be lost !

Problem is, that 'open dot-lock-file' is not secure
over NFS, but must be replaced by a sequence of
1) open a dummy-file 2) link dummy to lock-file 3) remove dummy
that is because the LINK is again secure and is done directly
on the host which holds the disk !

I'll look into the sources, but having little time, I would appreciate
patches if somebody has done something about that already .
Please respond by email to: stucki@math.fu-berlin.de

-- 
 Christoph von Stuckrad      *  *   !  talk to   ! <stucki@math.fu-berlin.de>  
 Freie Universitaet Berlin   |/__*  !  nickname  ! ...!unido!fub!leibniz!stucki
 Fachbereich Mathematik, EDV |\  *  !  'stucki'  ! Tel.: 49 30 838-5916
 Arnimallee 2-6              * *    !   on IRC   ! Fax:  49 30 838-5913

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arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!sdd.hp.com!news.cs.indiana.edu!umn.edu!math.fu-berlin.de!stucki

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Newsgroups: comp.mail.mush
Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!sdd.hp.com!news.cs.indiana.edu!umn.edu!math.fu-berlin.de!stucki
From: stucki@math.fu-berlin.de (Christoph von Stuckrad)
Subject: mush 7.2.3 looses mail on NFS !
Message-ID: <8TQ7AVJ@math.fu-berlin.de>
Summary: dot and flock locking is not enough on NFS ?!!
Keywords: lost mail
Sender: news@math.fu-berlin.de (Math Department)
Organization: Free University of Berlin, Germany
Date: Thu, 8 Oct 1992 10:17:59 GMT
Lines: 23