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Re: Restricting permissions on Unix socket

From: Alfred Perlstein <bright(at)wintelcom(dot)net>
To: Peter Eisentraut <peter_e(at)gmx(dot)net>
Cc: PostgreSQL Development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Restricting permissions on Unix socket
Date: 2000-10-31 23:02:30
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
* Peter Eisentraut <peter_e(at)gmx(dot)net> [001031 12:57] wrote:
> 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?

Set your umask to 777 then go to town.

-Alfred Perlstein - [bright(at)wintelcom(dot)net|alfred(at)freebsd(dot)org]
"I have the heart of a child; I keep it in a jar on my desk."

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