The following bug has been logged online:

Bug reference:      1150
Logged by:          Fabien Coelho

Email address:      [EMAIL PROTECTED]

PostgreSQL version: 7.5 Dev

Operating system:   Linux

Description:        grant options not properly checked

Details: 

It seems that GRANT ALL ON SCHEMA does not properly
check for grantor rights. I haven't tested other
grantable stuff...

repeat:

psql> SELECT CURRENT_USER;
 current_user 
--------------
 hobbes

psql> SELECT * FROM pg_namespace WHERE nspname='foo';
 nspname | nspowner |                 nspacl                 
---------+----------+----------------------------------------
 foo     |      101 | {calvin=U*C*/calvin,hobbes=U*C/calvin}


As hobbes, I should only be able to grant usage.
However:

psql> GRANT ALL ON SCHEMA foo TO suzy;
psql> SELECT * FROM pg_namespace WHERE nspname='foo';
 nspname | nspowner |                        nspacl                         
---------+----------+-------------------------------------------------------
 foo     |      101 | {calvin=U*C*/calvin,hobbes=U*C/calvin,suzy=UC/hobbes}

Suzy has both Usage and Create rights on schema foo,
although hobbes had only a grant option for usage.






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