Remove recordExtensionInitPriv[Worker]'s ownerId argument.

In the wake of the previous commit, we're not doing anything
with that argument.  Hence, revert the portions of 5342874
that added that argument and taught the callers to pass it.
Passing the ownerId requires additional syscache lookups in
some code paths, which'd be fine if we were doing anything
useful with the info, but it seems inadvisable if we're not.

Committed separately since there's some thought that we might
want to un-revert this in future, in case it's decided that
storing the original owner ID explicitly in pg_init_privs
is worth doing.

Discussion: https://postgr.es/m/CAMT0RQSVgv48G5GArUvOVhottWqZLrvC5wBzBa4HrUdXe9VRXw@mail.gmail.com

Author: tglsfdc

src/backend/catalog/aclchk.c

@@ -165,9 +165,9 @@ static AclMode pg_type_aclmask_ext(Oid type_oid, Oid roleid,
 								   AclMode mask, AclMaskHow how,
 								   bool *is_missing);
 static void recordExtensionInitPriv(Oid objoid, Oid classoid, int objsubid,
-									Oid ownerId, Acl *new_acl);
+									Acl *new_acl);
 static void recordExtensionInitPrivWorker(Oid objoid, Oid classoid, int objsubid,
-										  Oid ownerId, Acl *new_acl);
+										  Acl *new_acl);
 
 
 /*
@@ -1802,7 +1802,7 @@ ExecGrant_Attribute(InternalGrant *istmt, Oid relOid, const char *relname,
 		CatalogTupleUpdate(attRelation, &newtuple->t_self, newtuple);
 
 		/* Update initial privileges for extensions */
-		recordExtensionInitPriv(relOid, RelationRelationId, attnum, ownerId,
+		recordExtensionInitPriv(relOid, RelationRelationId, attnum,
 								ACL_NUM(new_acl) > 0 ? new_acl : NULL);
 
 		/* Update the shared dependency ACL info */
@@ -2062,8 +2062,7 @@ ExecGrant_Relation(InternalGrant *istmt)
 			CatalogTupleUpdate(relation, &newtuple->t_self, newtuple);
 
 			/* Update initial privileges for extensions */
-			recordExtensionInitPriv(relOid, RelationRelationId, 0,
-									ownerId, new_acl);
+			recordExtensionInitPriv(relOid, RelationRelationId, 0, new_acl);
 
 			/* Update the shared dependency ACL info */
 			updateAclDependencies(RelationRelationId, relOid, 0,
@@ -2264,7 +2263,7 @@ ExecGrant_common(InternalGrant *istmt, Oid classid, AclMode default_privs,
 		CatalogTupleUpdate(relation, &newtuple->t_self, newtuple);
 
 		/* Update initial privileges for extensions */
-		recordExtensionInitPriv(objectid, classid, 0, ownerId, new_acl);
+		recordExtensionInitPriv(objectid, classid, 0, new_acl);
 
 		/* Update the shared dependency ACL info */
 		updateAclDependencies(classid,
@@ -2416,8 +2415,7 @@ ExecGrant_Largeobject(InternalGrant *istmt)
 		CatalogTupleUpdate(relation, &newtuple->t_self, newtuple);
 
 		/* Update initial privileges for extensions */
-		recordExtensionInitPriv(loid, LargeObjectRelationId, 0,
-								ownerId, new_acl);
+		recordExtensionInitPriv(loid, LargeObjectRelationId, 0, new_acl);
 
 		/* Update the shared dependency ACL info */
 		updateAclDependencies(LargeObjectRelationId,
@@ -2589,7 +2587,7 @@ ExecGrant_Parameter(InternalGrant *istmt)
 
 		/* Update initial privileges for extensions */
 		recordExtensionInitPriv(parameterId, ParameterAclRelationId, 0,
-								ownerId, new_acl);
+								new_acl);
 
 		/* Update the shared dependency ACL info */
 		updateAclDependencies(ParameterAclRelationId, parameterId, 0,
@@ -4477,7 +4475,6 @@ recordExtObjInitPriv(Oid objoid, Oid classoid)
 				}
 
 				recordExtensionInitPrivWorker(objoid, classoid, curr_att,
-											  pg_class_tuple->relowner,
 											  DatumGetAclP(attaclDatum));
 
 				ReleaseSysCache(attTuple);
@@ -4490,7 +4487,6 @@ recordExtObjInitPriv(Oid objoid, Oid classoid)
 		/* Add the record, if any, for the top-level object */
 		if (!isNull)
 			recordExtensionInitPrivWorker(objoid, classoid, 0,
-										  pg_class_tuple->relowner,
 										  DatumGetAclP(aclDatum));
 
 		ReleaseSysCache(tuple);
@@ -4501,7 +4497,6 @@ recordExtObjInitPriv(Oid objoid, Oid classoid)
 		Datum		aclDatum;
 		bool		isNull;
 		HeapTuple	tuple;
-		Form_pg_largeobject_metadata form_lo_meta;
 		ScanKeyData entry[1];
 		SysScanDesc scan;
 		Relation	relation;
@@ -4526,7 +4521,6 @@ recordExtObjInitPriv(Oid objoid, Oid classoid)
 		tuple = systable_getnext(scan);
 		if (!HeapTupleIsValid(tuple))
 			elog(ERROR, "could not find tuple for large object %u", objoid);
-		form_lo_meta = (Form_pg_largeobject_metadata) GETSTRUCT(tuple);
 
 		aclDatum = heap_getattr(tuple,
 								Anum_pg_largeobject_metadata_lomacl,
@@ -4535,7 +4529,6 @@ recordExtObjInitPriv(Oid objoid, Oid classoid)
 		/* Add the record, if any, for the top-level object */
 		if (!isNull)
 			recordExtensionInitPrivWorker(objoid, classoid, 0,
-										  form_lo_meta->lomowner,
 										  DatumGetAclP(aclDatum));
 
 		systable_endscan(scan);
@@ -4544,7 +4537,6 @@ recordExtObjInitPriv(Oid objoid, Oid classoid)
 	else if (get_object_attnum_acl(classoid) != InvalidAttrNumber)
 	{
 		int			cacheid;
-		Oid			ownerId;
 		Datum		aclDatum;
 		bool		isNull;
 		HeapTuple	tuple;
@@ -4555,17 +4547,14 @@ recordExtObjInitPriv(Oid objoid, Oid classoid)
 			elog(ERROR, "cache lookup failed for %s %u",
 				 get_object_class_descr(classoid), objoid);
 
-		ownerId = DatumGetObjectId(SysCacheGetAttrNotNull(cacheid,
-														  tuple,
-														  get_object_attnum_owner(classoid)));
 		aclDatum = SysCacheGetAttr(cacheid, tuple,
 								   get_object_attnum_acl(classoid),
 								   &isNull);
 
 		/* Add the record, if any, for the top-level object */
 		if (!isNull)
 			recordExtensionInitPrivWorker(objoid, classoid, 0,
-										  ownerId, DatumGetAclP(aclDatum));
+										  DatumGetAclP(aclDatum));
 
 		ReleaseSysCache(tuple);
 	}
@@ -4578,8 +4567,6 @@ recordExtObjInitPriv(Oid objoid, Oid classoid)
 void
 removeExtObjInitPriv(Oid objoid, Oid classoid)
 {
-	Oid			ownerId;
-
 	/*
 	 * If this is a relation then we need to see if there are any sub-objects
 	 * (eg: columns) for it and, if so, be sure to call
@@ -4594,7 +4581,6 @@ removeExtObjInitPriv(Oid objoid, Oid classoid)
 		if (!HeapTupleIsValid(tuple))
 			elog(ERROR, "cache lookup failed for relation %u", objoid);
 		pg_class_tuple = (Form_pg_class) GETSTRUCT(tuple);
-		ownerId = pg_class_tuple->relowner;
 
 		/*
 		 * Indexes don't have permissions, neither do the pg_class rows for
@@ -4631,44 +4617,17 @@ removeExtObjInitPriv(Oid objoid, Oid classoid)
 
 				/* when removing, remove all entries, even dropped columns */
 
-				recordExtensionInitPrivWorker(objoid, classoid, curr_att,
-											  ownerId, NULL);
+				recordExtensionInitPrivWorker(objoid, classoid, curr_att, NULL);
 
 				ReleaseSysCache(attTuple);
 			}
 		}
 
 		ReleaseSysCache(tuple);
 	}
-	else
-	{
-		/* Must find out the owner's OID the hard way */
-		AttrNumber	ownerattnum;
-		int			cacheid;
-		HeapTuple	tuple;
-
-		/*
-		 * If the object is of a kind that has no owner, it should not have
-		 * any pg_init_privs entry either.
-		 */
-		ownerattnum = get_object_attnum_owner(classoid);
-		if (ownerattnum == InvalidAttrNumber)
-			return;
-		cacheid = get_object_catcache_oid(classoid);
-		tuple = SearchSysCache1(cacheid, ObjectIdGetDatum(objoid));
-		if (!HeapTupleIsValid(tuple))
-			elog(ERROR, "cache lookup failed for %s %u",
-				 get_object_class_descr(classoid), objoid);
-
-		ownerId = DatumGetObjectId(SysCacheGetAttrNotNull(cacheid,
-														  tuple,
-														  ownerattnum));
-
-		ReleaseSysCache(tuple);
-	}
 
 	/* Remove the record, if any, for the top-level object */
-	recordExtensionInitPrivWorker(objoid, classoid, 0, ownerId, NULL);
+	recordExtensionInitPrivWorker(objoid, classoid, 0, NULL);
 }
 
 /*
@@ -4680,8 +4639,7 @@ removeExtObjInitPriv(Oid objoid, Oid classoid)
  * Pass in the object OID, the OID of the class (the OID of the table which
  * the object is defined in) and the 'sub' id of the object (objsubid), if
  * any.  If there is no 'sub' id (they are currently only used for columns of
- * tables) then pass in '0'.  Also pass the OID of the object's owner.
- * Finally, pass in the complete ACL to store.
+ * tables) then pass in '0'.  Finally, pass in the complete ACL to store.
  *
  * If an ACL already exists for this object/sub-object then we will replace
  * it with what is passed in.
@@ -4690,8 +4648,7 @@ removeExtObjInitPriv(Oid objoid, Oid classoid)
  * removed, if one is found.
  */
 static void
-recordExtensionInitPriv(Oid objoid, Oid classoid, int objsubid,
-						Oid ownerId, Acl *new_acl)
+recordExtensionInitPriv(Oid objoid, Oid classoid, int objsubid, Acl *new_acl)
 {
 	/*
 	 * Generally, we only record the initial privileges when an extension is
@@ -4704,7 +4661,7 @@ recordExtensionInitPriv(Oid objoid, Oid classoid, int objsubid,
 	if (!creating_extension && !binary_upgrade_record_init_privs)
 		return;
 
-	recordExtensionInitPrivWorker(objoid, classoid, objsubid, ownerId, new_acl);
+	recordExtensionInitPrivWorker(objoid, classoid, objsubid, new_acl);
 }
 
 /*
@@ -4721,7 +4678,7 @@ recordExtensionInitPriv(Oid objoid, Oid classoid, int objsubid,
  */
 static void
 recordExtensionInitPrivWorker(Oid objoid, Oid classoid, int objsubid,
-							  Oid ownerId, Acl *new_acl)
+							  Acl *new_acl)
 {
 	Relation	relation;
 	ScanKeyData key[3];