Re: Re: Proposal for Allow postgresql.conf values to be changed via SQL [review]

On Wednesday, January 23, 2013 11:51 PM Alvaro Herrera wrote:
> Fujii Masao escribió:
> > On Wed, Jan 23, 2013 at 12:24 PM, Amit Kapila
> <amit.kapila@huawei.com> wrote:
>
> > >> Is it safe to write something in the directory other than data
> > >> directory
> > >> via SQL?
> > >>
> > >> postgres user usually has the write permission for the
> configuration
> > >> directory like /etc/postgresql?
> > >
> > > As postgresql.conf will also be in same path and if user can change
> that,
> > > then what's the problem with postgresql.auto.conf
> >
> > If the configuration directory like /etc is owned by root and only
> root has
> > a write permission for it, the user running PostgreSQL server would
> not
> > be able to update postgresql.auto.conf there. OTOH, even in that
> case,
> > a user can switch to root and update the configuration file there.
> I'm not
> > sure whether the configuration directory is usually writable by the
> user
> > running PostgreSQL server in Debian or Ubuntu, though.
>
> Yes it is -- the /etc/postgresql/<version>/<cluster> directory (where
> postgresql.conf resides) is owned by user postgres.

So in that case we can consider postgresql.auto.conf to be in path w.r.t
postgresql.conf instead of data directory.

With Regards,
Amit Kapila.