From 0adfa2c39d567394f423c69bfaf467d0d00ee3df Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Fri, 25 Jun 2004 21:55:59 +0000
Subject: Support renaming of tablespaces, and changing the owners of
 aggregates, conversions, functions, operators, operator classes, schemas,
 types, and tablespaces.  Fold the existing implementations of alter domain
 owner and alter database owner in with these.

Christopher Kings-Lynne
---
 src/backend/commands/operatorcmds.c | 55 ++++++++++++++++++++++++++++++++++++-
 1 file changed, 54 insertions(+), 1 deletion(-)

(limited to 'src/backend/commands/operatorcmds.c')

diff --git a/src/backend/commands/operatorcmds.c b/src/backend/commands/operatorcmds.c
index d2ffae2ce56..8fbe0d1128b 100644
--- a/src/backend/commands/operatorcmds.c
+++ b/src/backend/commands/operatorcmds.c
@@ -9,7 +9,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/commands/operatorcmds.c,v 1.16 2004/05/26 04:41:11 neilc Exp $
+ *	  $PostgreSQL: pgsql/src/backend/commands/operatorcmds.c,v 1.17 2004/06/25 21:55:53 tgl Exp $
  *
  * DESCRIPTION
  *	  The "DefineFoo" routines take the parse tree and pick out the
@@ -37,6 +37,7 @@
 #include "access/heapam.h"
 #include "catalog/catname.h"
 #include "catalog/dependency.h"
+#include "catalog/indexing.h"
 #include "catalog/namespace.h"
 #include "catalog/pg_operator.h"
 #include "commands/defrem.h"
@@ -263,3 +264,55 @@ RemoveOperatorById(Oid operOid)
 
 	heap_close(relation, RowExclusiveLock);
 }
+
+/*
+ * change operator owner
+ */
+void
+AlterOperatorOwner(List *name, TypeName *typeName1, TypeName *typeName2,
+				   AclId newOwnerSysId)
+{
+	Oid			operOid;
+	HeapTuple	tup;
+	Relation	rel;
+	Form_pg_operator	oprForm;
+
+	rel = heap_openr(OperatorRelationName, RowExclusiveLock);
+
+	operOid = LookupOperNameTypeNames(name, typeName1, typeName2,
+									  false);
+
+	tup = SearchSysCacheCopy(OPEROID,
+						 ObjectIdGetDatum(operOid),
+						 0, 0, 0);
+	if (!HeapTupleIsValid(tup)) /* should not happen */
+		elog(ERROR, "cache lookup failed for operator %u", operOid);
+
+	oprForm = (Form_pg_operator) GETSTRUCT(tup);
+
+	/* 
+	 * If the new owner is the same as the existing owner, consider the
+	 * command to have succeeded.  This is for dump restoration purposes.
+	 */
+	if (oprForm->oprowner != newOwnerSysId)
+	{
+		/* Otherwise, must be superuser to change object ownership */
+		if (!superuser())
+			ereport(ERROR,
+					(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
+					 errmsg("must be superuser to change owner")));
+
+		/* Modify the owner --- okay to scribble on tup because it's a copy */
+		oprForm->oprowner = newOwnerSysId;
+
+		simple_heap_update(rel, &tup->t_self, tup);
+
+		CatalogUpdateIndexes(rel, tup);
+	}
+
+	heap_close(rel, NoLock);
+	heap_freetuple(tup);
+
+}
+
+
-- 
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