Re: Updated instrumentation patch - Mailing list pgsql-patches

From Magnus Hagander
Subject Re: Updated instrumentation patch
Date
Msg-id 6BCB9D8A16AC4241919521715F4D8BCE094634@algol.sollentuna.se
Whole thread Raw
In response to Updated instrumentation patch  ("Magnus Hagander" <mha@sollentuna.net>)
Responses Re: Updated instrumentation patch
List pgsql-patches
> > > Also, as I already said, marking it as PGC_POSTMASTER is
> simply not
> > > adequate security.  Once we have some sort of remote
> admin feature,
> > > I would expect it to support adjustment of even postmaster-level
> > > options (this would mean forcing a database restart of
> course) ---
> > > you can hardly say that you have a complete remote admin
> solution if
> > > you can't change shared_buffers or max_connections.
> >
> > The point is you cannot *enable* it once it is *disabled*. Thus you
> > cannot *elevate* your privileges. Thus not a security issue.
>
> I think any secure solution is going to have to block all
> write access to postgresql.conf, and that includes all the
> COPY TO and all the untrusted languages.

Exactly. But we won't get that for 8.1. So for now, we block all write
access through *new* functions, per the "let's at least not add more
security holes" rule.

//Magnus

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