Re: Updates of SE-PostgreSQL 8.4devel patches (r1268)

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: pgsql-hackers(at)postgresql(dot)org
Cc: Gregory Stark <stark(at)enterprisedb(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Bruce Momjian <bruce(at)momjian(dot)us>, KaiGai Kohei <kaigai(at)ak(dot)jp(dot)nec(dot)com>, KaiGai Kohei <kaigai(at)kaigai(dot)gr(dot)jp>
Subject: Re: Updates of SE-PostgreSQL 8.4devel patches (r1268)
Date: 2008-12-11 21:05:55
Message-ID: 200812112305.57279.peter_e@gmx.net
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On Thursday 11 December 2008 21:44:39 Gregory Stark wrote:
> > Because we want to use SQL-based row access control and SELinux-based row
> > access control at the same time.  Isn't this exactly one of the
> > objections upthread?  Both must be available at the same time.
>
> Well I don't think anyone would actually want them *at the same time*.
> Combining multiple security models would mean you aren't actually following
> any security model.

That doesn't follow. Using DAC and MAC together is quite standard. Even if
your kernel is SELinux-enabled and has a policy, you'd still want to use
normal permission bits. Same difference here.

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