Обсуждение: permission errors

I have granted the user UPDATE permission on this table several times.
I check the perms and they look right.  I cannot update the hit_count of
the link table as user 'masks'.

Oddity 2 - I created these tables as masks_adm.....as you can see below
that is the owner....yet I frequently got permission denied errors when
I tried to do things to these tables and had to actuall grant myself
permission to access them.  It appears that this only happens when I
grant someone else permissions on the tables because the others work
just fine.


here is my \d:

masks=> \d
             List of relations
        Name         |   Type   |   Owner
---------------------+----------+-----------
 access              | table    | masks_adm
 access_key_seq      | sequence | masks_adm
 administrator       | table    | masks_adm
 enews_subscription  | table    | masks_adm
 enewsletter         | table    | masks_adm
 enewsletter_key_seq | sequence | masks_adm
 link                | table    | masks_adm
 link_category       | table    | masks_adm
 link_edit_req       | table    | masks_adm
 link_key_seq        | sequence | masks_adm
 masks_user          | table    | masks_adm
(11 rows)

here is the permissions -
         Access permissions for database "masks"
      Relation       |        Access permissions
---------------------+-----------------------------------
 access              |
 access_key_seq      |
 administrator       |
 enews_subscription  |
 enewsletter         |
 enewsletter_key_seq |
 link                | {"=","masks=arw","masks_adm=arw"}
 link_category       | {"=","masks=r","masks_adm=arw"}
 link_edit_req       |
 link_key_seq        | {"=","masks=rw","masks_adm=w"}
 masks_user          | {"=","masks=r"}

Here is the command and the result:
masks=> update link set hit_count=1 where key=192;
ERROR:  masks_user: Permission denied.

Noah Roberts <jik@foxinternet.net> writes:
> Oddity 2 - I created these tables as masks_adm.....as you can see below
> that is the owner....yet I frequently got permission denied errors when
> I tried to do things to these tables and had to actuall grant myself
> permission to access them.

This is a known bug in GRANT in current releases: the first explicit
GRANT on a table loses the all-rights-granted-to-table-owner default
permissions for the table.  It's fixed for 7.2, but at the moment you
have to remember to grant yourself access rights too.

            regards, tom lane

> I have granted the user UPDATE permission on this table several times.
> I check the perms and they look right.  I cannot update the hit_count of
> the link table as user 'masks'.
>

Ok, I fixed the problem, but I need to know why it worked.  What I did was
grant the masks_adm user all access rights to the masks_user table.  I had
not realized I had changed the user that accesses the tables at this
point....the confusion though has to do with the fact that the masks_user
table is not accessed in that ENTIRE php script!  The querry at the line that
errors is "UPDATE link set hit_count=hit_count+1 WHERE key=$link;" and a
"grep masks_user directory.php" turned up nothing.

There is a foreign key to masks_user but it is not used in this querry....is
that the thing of it?

>
> here is my \d:
>
> masks=> \d
>              List of relations
>         Name         |   Type   |   Owner
> ---------------------+----------+-----------
>  access              | table    | masks_adm
>  access_key_seq      | sequence | masks_adm
>  administrator       | table    | masks_adm
>  enews_subscription  | table    | masks_adm
>  enewsletter         | table    | masks_adm
>  enewsletter_key_seq | sequence | masks_adm
>  link                | table    | masks_adm
>  link_category       | table    | masks_adm
>  link_edit_req       | table    | masks_adm
>  link_key_seq        | sequence | masks_adm
>  masks_user          | table    | masks_adm
> (11 rows)
>
> here is the permissions -
>          Access permissions for database "masks"
>       Relation       |        Access permissions
> ---------------------+-----------------------------------
>  access              |
>  access_key_seq      |
>  administrator       |
>  enews_subscription  |
>  enewsletter         |
>  enewsletter_key_seq |
>  link                | {"=","masks=arw","masks_adm=arw"}
>  link_category       | {"=","masks=r","masks_adm=arw"}
>  link_edit_req       |
>  link_key_seq        | {"=","masks=rw","masks_adm=w"}
>  masks_user          | {"=","masks=r"}
>
> Here is the command and the result:
> masks=> update link set hit_count=1 where key=192;
> ERROR:  masks_user: Permission denied.