Re: creating objects in pg_catalog

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: creating objects in pg_catalog
Date: 2012-06-07 12:44:26
Message-ID: CA+Tgmoac=iv1_pA6T=rz+v3gsxkGvbV5Yz3sJ2259yf7kiWuEg@mail.gmail.com
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On Wed, Jun 6, 2012 at 5:21 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Robert Haas <robertmhaas(at)gmail(dot)com> writes:
>> rhaas=# create table pg_catalog.tom (a int);
>> ERROR:  permission denied to create "pg_catalog.tom"
>
>> The offending error check is in heap_create(), and based on what
>> you're saying here it seems like we should just rip it out.
>
> Hmm.  Yeah, it seems like the regular permissions tests on the schemas
> in question should be enough to keep Joe User from making tables there,
> and I do not see a reason why the backend would care if there are
> non-catalog tables laying about in pg_catalog.
>
> Checking the commit history, it seems this was originally a test to
> prevent people from creating tables named "pg_xxx":
>
> http://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=9999f5a10e722c052006886b678995695001958a#patch3
>
> which may or may not have been critical once upon a time, but surely is
> not any more.
>
> So no objection to removing that particular test.

Patch attached. Barring objections, I'll apply this to 9.3 once we branch.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

Attachment Content-Type Size
remove-heap-create-check.patch application/octet-stream 2.7 KB

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