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Date:      Tue, 24 Aug 1999 01:11:35 +0900
From:      "Daniel C. Sobral" <dcs@newsguy.com>
To:        "Daniel O'Connor" <doconnor@gsoft.com.au>
Cc:        Greg Lehey <grog@lemis.com>, Garrett Wollman <wollman@khavrinen.lcs.mit.edu>, FreeBSD Committers <cvs-committers@FreeBSD.ORG>, FreeBSD Hackers <hackers@FreeBSD.ORG>, Poul-Henning Kamp <phk@critter.freebsd.dk>, Matthew Dillon <dillon@apollo.backplane.com>
Subject:   Re: Mandatory locking?
Message-ID:  <37C172B7.40AD1029@newsguy.com>
References:  <XFMail.990823153524.doconnor@gsoft.com.au>

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Daniel O'Connor wrote:
> 
> On 23-Aug-99 Greg Lehey wrote:
> >  I'm a little surprised that there's any objection to the concept of
> >  mandatory locking.  In transaction processing, locking is not
> >  optional, and if any process at all can access a file or set of files
> >  without locking, you can't guarantee the database integrity.  Other
> >  OSs have used mandatory locking for decades, and System V has it too.
> >  So far I haven't seen any arguments, let alone valid ones, against
> >  having it in FreeBSD.
> 
> I think its a good idea, and hey if people object it can always be an option
> like ->
> 
> option NO_MANDATORY_LOCKING
> 
> Phew, that was tough.

When introducing security holes, the default should be the hole not
being present. Ie, reverse that option.

--
Daniel C. Sobral			(8-DCS)
dcs@newsguy.com
dcs@freebsd.org

	- Come on.
	- Where are we going?
	- To get what you came for.
	- What's that?
	- Me.




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