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Article #877

Re: POSIX - Caving In Under Its Own Weight (Long)

#877
From: Casey Schaufler
Date: Tue, 29 Dec 1992 22:14
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Submitted-by: casey@anchovy.wpd.sgi.com (Casey Schaufler)

> I thought the audit commands were being done as an addendum to 1003.2.
> Has this idea been dropped?

All of 1003.6 should be considered an addendum.

> Not to mention the fact (opinion?) that the interfaces specified by 1003.6
> are so complex that verification and minimality of the TCB is extremely
> (impossible?) difficult to assure.

The POSIX ACL spec is Most Heinous. The priviledge mechanism is designed
primarily to ease retrofitting existing sysadmin programs, not to provide
for the principle of least priviledge. The audit section doesn't actually
nail anything down.

> Anybody know where I can get a copy of the Trusix spec?

The Trusix spec is available from the NSA. Don't strain any muscles getting
it, however. The Trusix working group (which I was privileged to be part of)
did not (in my opinion) produce anything of real value, primarily because
they didn't want to be incompatible with the POSIX efforts.

	-casey

Volume-Number: Volume 30, Number 4
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From: casey@anchovy.wpd.sgi.com (Casey Schaufler)
Newsgroups: comp.std.unix
Subject: Re: POSIX - Caving In Under Its Own Weight (Long)
Date: 29 Dec 1992 14:14:57 -0800
Organization: Silicon Graphics, Inc., Mountain View, CA
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