Re: Restricting permissions on Unix socket

From: Robert Kernell <kernell(at)sundog(dot)larc(dot)nasa(dot)gov>
To: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Restricting permissions on Unix socket
Date: 2000-10-31 21:36:26
Message-ID: 200010312136.QAA12773@sundog.larc.nasa.gov
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> I'd like to add an option or two to restrict the set of users that can
> connect to the Unix domain socket of the postmaster, as an extra security
> option.
>
> I imagine something like this:
>
> unix_socket_perm = 0660
> unix_socket_group = pgusers
>
> Obviously, permissions that don't have 6's in there don't make much sense,
> but I feel this notation is the most intuitive way for admins.
>
> I'm not sure how to do the group thing, though. If I use chown(2) then
> there's a race condition, but doing savegid; create socket; restoregid
> might be too awkward? Any hints?
>

Just curious. What is a race condition?

Bob Kernell
Research Scientist
Surface Validation Group
Atmospheric Sciences Competency
Analytical Services & Materials, Inc.
email: kernell(at)sundog(dot)larc(dot)nasa(dot)gov
tel: 757-827-4631

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