Re: Allow pg_signal_backend members to use pg_log_backend_memory_stats().

At Sun, 24 Oct 2021 20:31:37 -0700, Jeff Davis <pgsql@j-davis.com> wrote in 
> On Mon, 2021-10-25 at 11:53 +0900, Kyotaro Horiguchi wrote:
> > In other words, I don't think pg_signal_backends is not meant to
> > control "log something on another session" or "rotate log file". 
> > It's
> > danger that if we allow somewone to rotate log files, that means to
> > allow same user to terminate another session.
> 
> The current patch doesn't allow members of pg_signal_backend to rotate
> the log file.

Ah, sorry, I might have confused with some other discussion.

> Do you think pg_signal_backend is the wrong group to allow usage of
> pg_log_backend_memory_contexts()? Alternatively, it could simply not

Yes. I think it would be danger that who is allowed to dump memory
context into log files by granting pg_signal_backend also can
terminate other backends.

> pg_log_backend_memory_contexts()? Alternatively, it could simply not
> GRANT anything, and leave that up to the administrator to choose who
> can use it.

*I* prefer that. I'm not sure I'm the only one to think so, though..

regards.

-- 
Kyotaro Horiguchi
NTT Open Source Software Center