Re: pg_basebackup fails on databases with high OIDs

On Sat, Jan 11, 2020 at 08:21:11AM +0100, Peter Eisentraut wrote:
> On 2020-01-06 21:00, Magnus Hagander wrote:
> > > +0.5 to avoid calling OidInputFunctionCall()
> >
> > Or just directly using atol() instead of atoi()? Well maybe not
> > directly but in a small wrapper that verifies it's not bigger than an
> > unsigned?
> >
> > Unlike in cases where we use oidin etc, we are dealing with data that
> > is "mostly trusted" here, aren't we? Meaning we could call atol() on
> > it, and throw an error if it overflows, and be done with it?
> > Subdirectories in the data directory aren't exactly "untrusted enduser
> > data"...
>
> Yeah, it looks like we are using strtoul() without additional error checking
> in similar situations, so here is a patch doing it like that.

> -								true, isDbDir ? pg_atoi(lastDir + 1, sizeof(Oid), 0) : InvalidOid);
> +								true, isDbDir ? (Oid) strtoul(lastDir + 1, NULL, 10) : InvalidOid);

Looking at some other code, I just discovered the atooid() macro that already
does the same, maybe it'd be better for consistency to use that instead?