Re: [HACKERS] pg_user "sealed"

>     Since  you changed ACL_WORLD_DEFAULT to ACL_NO too, there are
>     now problems on \d <table> (pg_attribute: Permission denied).
>     And  thus  I expect more problems.  I think users should have
>     SELECT permission on non-critical system catalogs by default.
> 
>     But  I  don't  think that setting explicit GRANT's on all the
>     system catalogs is a good thing. Due to  the  ACL  parsing  I
>     would expect some loss of performance.
> 
>     So   if   the   relname   is   given   to   acldefault()   in
>     utils/adt/acl.c, it can do a IsSystemRelationName() on it and
>     return ACL_RD instead of ACL_WORLD_DEFAULT.

Nice solution.

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