Tom Lane wrote:
> Josh Berkus <[email protected]> writes:
> >> Uh, how are they different? You mean just UPDATE and none of the
> >> others do anything?
>
> > Yes, it would be nice to have real permissions for sequences, specifically
> > USE (which allows nextval() and currval()) and UPDATE (which would allow
> > setval() ). However, I don't know that the added functionality would
> > justify breaking backwards-compatibility.
>
> We could maintain backwards compatibility by continuing to accept the
> old equivalences when you say GRANT ON TABLE. But when you say GRANT ON
> SEQUENCE, I think it should use sequence-specific privilege keywords,
> and not allow the privileges that don't mean anything for sequences,
> like DELETE.
OK.
> I'm not sure offhand what keywords we'd want to use, but now is the time
> to look at it, *before* it becomes set in stone that GRANT ON SEQUENCE
> is just another spelling of GRANT ON TABLE.
Sequences do not support INSERT, UPDATE, or DELETE, but we overload
UPDATE to control nextval()/setval(), so I just allowed SELECT and
UPDATE. I am not sure it makes any sense to allow rules, references,
and triggers on sequences. However, using ALL or TABLE keywords you can
define those permissions to a sequence.
> (The subtext of this is that I don't have a lot of use for allowing
> variant syntaxes that don't actually do anything different ...)
FYI, SQL03 defines GRANT SEQUENCE.
--
Bruce Momjian | http://candle.pha.pa.us
[email protected] | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073
Index: doc/src/sgml/ref/grant.sgml
===================================================================
RCS file: /cvsroot/pgsql/doc/src/sgml/ref/grant.sgml,v
retrieving revision 1.50
diff -c -c -r1.50 grant.sgml
*** doc/src/sgml/ref/grant.sgml 20 Oct 2005 19:18:01 -0000 1.50
--- doc/src/sgml/ref/grant.sgml 6 Jan 2006 15:23:16 -0000
***************
*** 25,30 ****
--- 25,35 ----
ON [ TABLE ] <replaceable class="PARAMETER">tablename</replaceable> [,
...]
TO { <replaceable class="PARAMETER">username</replaceable> | GROUP
<replaceable class="PARAMETER">groupname</replaceable> | PUBLIC } [, ...] [
WITH GRANT OPTION ]
+ GRANT { { SELECT | UPDATE }
+ [,...] | ALL [ PRIVILEGES ] }
+ ON SEQUENCE <replaceable class="PARAMETER">tablename</replaceable> [, ...]
+ TO { <replaceable class="PARAMETER">username</replaceable> | GROUP
<replaceable class="PARAMETER">groupname</replaceable> | PUBLIC } [, ...] [
WITH GRANT OPTION ]
+
GRANT { { CREATE | TEMPORARY | TEMP } [,...] | ALL [ PRIVILEGES ] }
ON DATABASE <replaceable>dbname</replaceable> [, ...]
TO { <replaceable class="PARAMETER">username</replaceable> | GROUP
<replaceable class="PARAMETER">groupname</replaceable> | PUBLIC } [, ...] [
WITH GRANT OPTION ]
***************
*** 511,517 ****
<para>
The <literal>RULE</literal> privilege, and privileges on
! databases, tablespaces, schemas, languages, and sequences are
<productname>PostgreSQL</productname> extensions.
</para>
</refsect1>
--- 516,522 ----
<para>
The <literal>RULE</literal> privilege, and privileges on
! databases, tablespaces, schemas, and languages are
<productname>PostgreSQL</productname> extensions.
</para>
</refsect1>
Index: doc/src/sgml/ref/revoke.sgml
===================================================================
RCS file: /cvsroot/pgsql/doc/src/sgml/ref/revoke.sgml,v
retrieving revision 1.35
diff -c -c -r1.35 revoke.sgml
*** doc/src/sgml/ref/revoke.sgml 20 Oct 2005 19:18:01 -0000 1.35
--- doc/src/sgml/ref/revoke.sgml 6 Jan 2006 15:23:16 -0000
***************
*** 28,33 ****
--- 28,40 ----
[ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
+ { { SELECT | UPDATE }
+ [,...] | ALL [ PRIVILEGES ] }
+ ON SEQUENCE <replaceable class="PARAMETER">tablename</replaceable> [, ...]
+ FROM { <replaceable class="PARAMETER">username</replaceable> | GROUP
<replaceable class="PARAMETER">groupname</replaceable> | PUBLIC } [, ...]
+ [ CASCADE | RESTRICT ]
+
+ REVOKE [ GRANT OPTION FOR ]
{ { CREATE | TEMPORARY | TEMP } [,...] | ALL [ PRIVILEGES ] }
ON DATABASE <replaceable>dbname</replaceable> [, ...]
FROM { <replaceable class="PARAMETER">username</replaceable> | GROUP
<replaceable class="PARAMETER">groupname</replaceable> | PUBLIC } [, ...]
Index: src/backend/catalog/aclchk.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/catalog/aclchk.c,v
retrieving revision 1.123
diff -c -c -r1.123 aclchk.c
*** src/backend/catalog/aclchk.c 1 Dec 2005 02:03:00 -0000 1.123
--- src/backend/catalog/aclchk.c 6 Jan 2006 15:23:17 -0000
***************
*** 283,288 ****
--- 283,289 ----
switch (stmt->objtype)
{
case ACL_OBJECT_RELATION:
+ case ACL_OBJECT_SEQUENCE:
all_privileges = ACL_ALL_RIGHTS_RELATION;
errormsg = _("invalid privilege type %s for table");
break;
***************
*** 356,361 ****
--- 357,363 ----
switch (istmt->objtype)
{
case ACL_OBJECT_RELATION:
+ case ACL_OBJECT_SEQUENCE:
ExecGrant_Relation(istmt);
break;
case ACL_OBJECT_DATABASE:
***************
*** 395,400 ****
--- 397,403 ----
switch (objtype)
{
case ACL_OBJECT_RELATION:
+ case ACL_OBJECT_SEQUENCE:
foreach(cell, objnames)
{
Oid relOid;
***************
*** 577,582 ****
--- 580,599 ----
errmsg("\"%s\" is a composite type",
NameStr(pg_class_tuple->relname))));
+ if (istmt->objtype == ACL_OBJECT_SEQUENCE)
+ {
+ if (pg_class_tuple->relkind != RELKIND_SEQUENCE)
+ ereport(ERROR,
+
(errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("\"%s\" is not a
sequence",
+
NameStr(pg_class_tuple->relname))));
+ if (istmt->privileges != ACL_ALL_RIGHTS_RELATION &&
+ istmt->privileges & ~(ACL_SELECT | ACL_UPDATE))
+ ereport(ERROR,
+
(errcode(ERRCODE_INVALID_GRANT_OPERATION),
+ errmsg("sequences only support
SELECT and UPDATE privileges")));
+ }
+
/*
* Get owner ID and working copy of existing ACL. If there's no
ACL,
* substitute the proper default.
Index: src/backend/catalog/pg_shdepend.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/catalog/pg_shdepend.c,v
retrieving revision 1.6
diff -c -c -r1.6 pg_shdepend.c
*** src/backend/catalog/pg_shdepend.c 1 Dec 2005 02:03:00 -0000 1.6
--- src/backend/catalog/pg_shdepend.c 6 Jan 2006 15:23:17 -0000
***************
*** 1133,1138 ****
--- 1133,1139 ----
switch (sdepForm->classid)
{
case RelationRelationId:
+ /* could be a sequence
*/
istmt.objtype =
ACL_OBJECT_RELATION;
break;
case DatabaseRelationId:
Index: src/backend/parser/gram.y
===================================================================
RCS file: /cvsroot/pgsql/src/backend/parser/gram.y,v
retrieving revision 2.521
diff -c -c -r2.521 gram.y
*** src/backend/parser/gram.y 29 Dec 2005 04:53:18 -0000 2.521
--- src/backend/parser/gram.y 6 Jan 2006 15:23:20 -0000
***************
*** 3322,3327 ****
--- 3322,3334 ----
n->objs = $2;
$$ = n;
}
+ | SEQUENCE qualified_name_list
+ {
+ PrivTarget *n = makeNode(PrivTarget);
+ n->objtype = ACL_OBJECT_SEQUENCE;
+ n->objs = $2;
+ $$ = n;
+ }
| FUNCTION function_with_argtypes_list
{
PrivTarget *n = makeNode(PrivTarget);
Index: src/backend/utils/adt/acl.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/utils/adt/acl.c,v
retrieving revision 1.129
diff -c -c -r1.129 acl.c
*** src/backend/utils/adt/acl.c 18 Nov 2005 02:38:23 -0000 1.129
--- src/backend/utils/adt/acl.c 6 Jan 2006 15:23:23 -0000
***************
*** 542,547 ****
--- 542,548 ----
switch (objtype)
{
case ACL_OBJECT_RELATION:
+ case ACL_OBJECT_SEQUENCE:
world_default = ACL_NO_RIGHTS;
owner_default = ACL_ALL_RIGHTS_RELATION;
break;
Index: src/include/nodes/parsenodes.h
===================================================================
RCS file: /cvsroot/pgsql/src/include/nodes/parsenodes.h,v
retrieving revision 1.298
diff -c -c -r1.298 parsenodes.h
*** src/include/nodes/parsenodes.h 7 Dec 2005 15:20:55 -0000 1.298
--- src/include/nodes/parsenodes.h 6 Jan 2006 15:23:26 -0000
***************
*** 884,890 ****
*/
typedef enum GrantObjectType
{
! ACL_OBJECT_RELATION, /* table, view, sequence */
ACL_OBJECT_DATABASE, /* database */
ACL_OBJECT_FUNCTION, /* function */
ACL_OBJECT_LANGUAGE, /* procedural language */
--- 884,891 ----
*/
typedef enum GrantObjectType
{
! ACL_OBJECT_RELATION, /* table, view */
! ACL_OBJECT_SEQUENCE, /* sequence */
ACL_OBJECT_DATABASE, /* database */
ACL_OBJECT_FUNCTION, /* function */
ACL_OBJECT_LANGUAGE, /* procedural language */
---------------------------(end of broadcast)---------------------------
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