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Re: User-Id Tracking when Portal was started

From: Kohei KaiGai <kaigai(at)kaigai(dot)gr(dot)jp>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, PgHacker <pgsql-hackers(at)postgresql(dot)org>, Florian Pflug <fgp(at)phlo(dot)org>
Subject: Re: User-Id Tracking when Portal was started
Date: 2012-07-03 15:42:17
Message-ID: CADyhKSX6U5UbGznkXe5iNaWG+ADAsuqdUbAkbhLTd+QXH=2_9g@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-hackers
2012/7/3 Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>:
> Kohei KaiGai <kaigai(at)kaigai(dot)gr(dot)jp> writes:
>> 2012/7/3 Robert Haas <robertmhaas(at)gmail(dot)com>:
>>> Why not just save and restore the user ID and security context
>>> unconditionally, instead of doing this kind of dance?
>>>
>>> +               if (portal->userId != GetUserId())
>>> +                       SetUserIdAndSecContext(portal->userId, portal->secCo
>>> +               else
>>> +                       saveUserId = InvalidOid;
>>>
>> In case when CurrentUserId was updated during the code block
>> (E.g, execution of SET SESSION AUTHORIZATION), it overwrites
>> this update on restoring user-id and security-context.
>
> Um... what should happen if there was a SET SESSION AUTHORIZATION
> to the portal's userId?  This test will think nothing happened.
>
In my test, all the jobs by SET SESSION AUTHORIZATION was cleaned-up...
It makes nothing happen from viewpoint of users.

Thanks,
-- 
KaiGai Kohei <kaigai(at)kaigai(dot)gr(dot)jp>

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