| From: | Stephen Frost <sfrost(at)snowman(dot)net> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, "David P(dot) Quigley" <dpquigl(at)tycho(dot)nsa(dot)gov>, KaiGai Kohhookei <kaigai(at)ak(dot)jp(dot)nec(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Magnus Hagander <magnus(at)hagander(dot)net>, Chad Sellers <csellers(at)tresys(dot)com>, Josh Berkus <josh(at)agliodbs(dot)com>, jd <jd(at)commandprompt(dot)com>, David Fetter <david(at)fetter(dot)org>, Itagaki Takahiro <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp>, KaiGai Kohei <kaigai(at)kaigai(dot)gr(dot)jp>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Adding support for SE-Linux security |
| Date: | 2009-12-12 19:30:48 |
| Message-ID: | 20091212193048.GK17756@tamriel.snowman.net |
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| Lists: | pgsql-hackers |
* Stephen Frost (sfrost(at)snowman(dot)net) wrote:
> * Tom Lane (tgl(at)sss(dot)pgh(dot)pa(dot)us) wrote:
> > I assume he's talking about the object reference representation used in
> > pg_depend, which is actually class OID + object OID + sub-object ID.
> > The only object type that has sub-objects at the moment is tables,
> > wherein the sub-objects are columns and the sub-object IDs are column
> > numbers. The sub-object ID is zero for all other cases.
>
> You're right, of course, but for some reason I thought that there was
> another usage of it besides just the table/column case.
Ah, I realize what I was thinking about now.. The dependency system has
two flavors (pg_depend and pg_shdepend). We had SubIDs for columns in
pg_depend but not pg_shdepend- until column-level privs were added which
meant we could have roles depend on columns (due to privileges on that
column). To clarify- pg_depend is for database dependencies while
pg_shdepend is for cluster dependencies.
Thanks,
Stephen
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