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nextid.c revision 1.1.1.2 
      1 /*	$NetBSD: nextid.c,v 1.1.1.2 2025/09/05 21:09:50 christos Exp $	*/
      2 
      3 /* OpenLDAP WiredTiger backend */
      4 /* $OpenLDAP$ */
      5 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
      6  *
      7  * Copyright 2002-2024 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 /* ACKNOWLEDGEMENTS:
     19  * This work was developed by HAMANO Tsukasa <hamano (at) osstech.co.jp>
     20  * based on back-bdb for inclusion in OpenLDAP Software.
     21  * WiredTiger is a product of MongoDB Inc.
     22  */
     23 
     24 #include <sys/cdefs.h>
     25 __RCSID("$NetBSD: nextid.c,v 1.1.1.2 2025/09/05 21:09:50 christos Exp $");
     26 
     27 #include "portable.h"
     28 
     29 #include <stdio.h>
     30 #include <ac/string.h>
     31 #include "back-wt.h"
     32 #include "slap-config.h"
     33 
     34 int wt_next_id(BackendDB *be, ID *out){
     35     struct wt_info *wi = (struct wt_info *) be->be_private;
     36 	*out = __sync_add_and_fetch(&wi->wi_lastid, 1);
     37 	return 0;
     38 }
     39 
     40 int wt_last_id( BackendDB *be, WT_SESSION *session, ID *out )
     41 {
     42     WT_CURSOR *cursor;
     43     int rc;
     44     uint64_t id;
     45 
     46     rc = session->open_cursor(session, WT_TABLE_ID2ENTRY, NULL, NULL, &cursor);
     47     if(rc){
     48 		Debug( LDAP_DEBUG_ANY,
     49 			   "wt_last_id: open_cursor failed: %s (%d)\n",
     50 			   wiredtiger_strerror(rc), rc );
     51 		return rc;
     52     }
     53 
     54     rc = cursor->prev(cursor);
     55 	switch(rc) {
     56 	case 0:
     57 		rc = cursor->get_key(cursor, &id);
     58 		if ( rc ) {
     59 			Debug( LDAP_DEBUG_ANY,
     60 				   "wt_last_id: get_key failed: %s (%d)\n",
     61 				   wiredtiger_strerror(rc), rc );
     62 			return rc;
     63 		}
     64 		*out = id;
     65 		break;
     66 	case WT_NOTFOUND:
     67         /* no entry */
     68         *out = 0;
     69 		break;
     70 	default:
     71 		Debug( LDAP_DEBUG_ANY,
     72 			   "wt_last_id: prev failed: %s (%d)\n",
     73 			   wiredtiger_strerror(rc), rc );
     74     }
     75 
     76     rc = cursor->close(cursor);
     77     if ( rc ) {
     78 		Debug( LDAP_DEBUG_ANY,
     79 			   "wt_last_id: close failed: %s (%d)\n",
     80 			   wiredtiger_strerror(rc), rc );
     81 		return rc;
     82     }
     83 
     84     return 0;
     85 }
     86 
     87 /*
     88  * Local variables:
     89  * indent-tabs-mode: t
     90  * tab-width: 4
     91  * c-basic-offset: 4
     92  * End:
     93  */
     94