RE: Alter all tables in schema owner fix

From: "tanghy(dot)fnst(at)fujitsu(dot)com" <tanghy(dot)fnst(at)fujitsu(dot)com>
To: vignesh C <vignesh21(at)gmail(dot)com>, Greg Nancarrow <gregn4422(at)gmail(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, "houzj(dot)fnst(at)fujitsu(dot)com" <houzj(dot)fnst(at)fujitsu(dot)com>
Subject: RE: Alter all tables in schema owner fix
Date: 2021-12-03 07:54:06
Message-ID: OS0PR01MB61134C33AF81C6BBC406A882FB6A9@OS0PR01MB6113.jpnprd01.prod.outlook.com
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On Friday, December 3, 2021 1:31 PM vignesh C <vignesh21(at)gmail(dot)com> wrote:
>
> On Fri, Dec 3, 2021 at 9:53 AM Greg Nancarrow <gregn4422(at)gmail(dot)com> wrote:
> >
> > On Fri, Dec 3, 2021 at 2:06 PM vignesh C <vignesh21(at)gmail(dot)com> wrote:
> > >
> > > Currently while changing the owner of ALL TABLES IN SCHEMA
> > > publication, it is not checked if the new owner has superuser
> > > permission or not. Added a check to throw an error if the new owner
> > > does not have superuser permission.
> > > Attached patch has the changes for the same. Thoughts?
> > >
> >
> > It looks OK to me, but just two things:
> >
> > 1) Isn't it better to name "CheckSchemaPublication" as
> > "IsSchemaPublication", since it has a boolean return and also
> > typically CheckXXX type functions normally do checking and error-out
> > if they find a problem.
>
> Modified
>
> > 2) Since superuser_arg() caches previous input arg (last_roleid) and
> > has a fast-exit, and has been called immediately before for the FOR
> > ALL TABLES case, it would be better to write:
> >
> > + if (CheckSchemaPublication(form->oid) && !superuser_arg(newOwnerId))
> >
> > as:
> >
> > + if (!superuser_arg(newOwnerId) && IsSchemaPublication(form->oid))
>
> Modified
>
> Thanks for the comments, the attached v2 patch has the changes for the same.
>

Thanks for your patch.
I tested it and it fixed this problem as expected. It also passed "make check-world".

Regards,
Tang

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