3 files changed, 49 insertions, 3 deletions
diff --git a/source3/groupdb/mapping.c b/source3/groupdb/mapping.c
index 04471f9d43..830584979b 100644
--- a/source3/groupdb/mapping.c
+++ b/source3/groupdb/mapping.c
@@ -814,8 +814,24 @@ BOOL get_domain_group_from_sid(DOM_SID sid, GROUP_MAP *map)
 	ret = pdb_getgrsid(map, sid);
 	unbecome_root();
 	
-	if ( !ret ) 
+	/* special case check for rid 513 */
+	
+	if ( !ret ) {
+		uint32 rid;
+		
+		sid_peek_rid( &sid, &rid );
+		
+		if ( rid == DOMAIN_GROUP_RID_USERS ) {
+			fstrcpy( map->nt_name, "None" );
+			fstrcpy( map->comment, "Ordinary Users" );
+			sid_copy( &map->sid, &sid );
+			map->sid_name_use = SID_NAME_DOM_GRP;
+			
+			return True;
+		}
+		
 		return False;
+	}
 
 	DEBUG(10, ("get_domain_group_from_sid: SID found in the TDB\n"));
 
diff --git a/source3/passdb/passdb.c b/source3/passdb/passdb.c
index d795888180..876f04bdfe 100644
--- a/source3/passdb/passdb.c
+++ b/source3/passdb/passdb.c
@@ -548,6 +548,18 @@ BOOL lookup_global_sam_name(const char *user, int flags, uint32_t *rid,
 {
 	GROUP_MAP map;
 	BOOL ret;
+	
+	/* Windows treats "MACHINE\None" as a special name for 
+	   rid 513 on non-DCs.  You cannot create a user or group
+	   name "None" on Windows.  You will get an error that 
+	   the group already exists. */
+	   
+	if ( strequal( user, "None" ) ) {
+		*rid = DOMAIN_GROUP_RID_USERS;
+		*type = SID_NAME_DOM_GRP;
+		
+		return True;
+	}
 
 	/* LOOKUP_NAME_GROUP is a hack to allow valid users = @foo to work
 	 * correctly in the case where foo also exists as a user. If the flag
diff --git a/source3/passdb/pdb_interface.c b/source3/passdb/pdb_interface.c
index 4061e7b5db..82890fee2d 100644
--- a/source3/passdb/pdb_interface.c
+++ b/source3/passdb/pdb_interface.c
@@ -734,13 +734,31 @@ NTSTATUS pdb_enum_group_members(TALLOC_CTX *mem_ctx,
 				size_t *p_num_members)
 {
 	struct pdb_methods *pdb = pdb_get_methods();
+	NTSTATUS result;
 
 	if ( !pdb ) {
 		return NT_STATUS_UNSUCCESSFUL;
 	}
 
-	return pdb->enum_group_members(pdb, mem_ctx, sid, 
-						   pp_member_rids, p_num_members);
+	result = pdb->enum_group_members(pdb, mem_ctx, 
+			sid, pp_member_rids, p_num_members);
+		
+	/* special check for rid 513 */
+		
+	if ( !NT_STATUS_IS_OK( result ) ) {
+		uint32 rid;
+		
+		sid_peek_rid( sid, &rid );
+		
+		if ( rid == DOMAIN_GROUP_RID_USERS ) {
+			*p_num_members = 0;
+			*pp_member_rids = NULL;
+			
+			return NT_STATUS_OK;
+		}
+	}
+	
+	return result;
 }
 
 NTSTATUS pdb_enum_group_memberships(TALLOC_CTX *mem_ctx, struct samu *user,