1 /* $NetBSD: nextid.c,v 1.3 2021/08/14 16:15:00 christos Exp $ */ 2 3 /* init.c - initialize mdb backend */ 4 /* $OpenLDAP$ */ 5 /* This work is part of OpenLDAP Software <http://www.openldap.org/>. 6 * 7 * Copyright 2000-2021 The OpenLDAP Foundation. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted only as authorized by the OpenLDAP 12 * Public License. 13 * 14 * A copy of this license is available in the file LICENSE in the 15 * top-level directory of the distribution or, alternatively, at 16 * <http://www.OpenLDAP.org/license.html>. 17 */ 18 19 #include <sys/cdefs.h> 20 __RCSID("$NetBSD: nextid.c,v 1.3 2021/08/14 16:15:00 christos Exp $"); 21 22 #include "portable.h" 23 24 #include <stdio.h> 25 #include <ac/string.h> 26 27 #include "back-mdb.h" 28 29 int mdb_next_id( BackendDB *be, MDB_cursor *mc, ID *out ) 30 { 31 struct mdb_info *mdb = (struct mdb_info *) be->be_private; 32 int rc; 33 ID id = 0; 34 MDB_val key; 35 36 rc = mdb_cursor_get(mc, &key, NULL, MDB_LAST); 37 38 switch(rc) { 39 case MDB_NOTFOUND: 40 rc = 0; 41 *out = 1; 42 break; 43 case 0: 44 memcpy( &id, key.mv_data, sizeof( id )); 45 *out = ++id; 46 break; 47 48 default: 49 Debug( LDAP_DEBUG_ANY, 50 "=> mdb_next_id: get failed: %s (%d)\n", 51 mdb_strerror(rc), rc ); 52 goto done; 53 } 54 mdb->mi_nextid = *out; 55 56 done: 57 return rc; 58 } 59