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81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
/* init.c - initialize bdb backend */
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/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 2000-2009 The OpenLDAP Foundation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/string.h>
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#include "back-bdb.h"
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int bdb_next_id( BackendDB *be, ID *out )
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{
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struct bdb_info *bdb = (struct bdb_info *) be->be_private;
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ldap_pvt_thread_mutex_lock( &bdb->bi_lastid_mutex );
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*out = ++bdb->bi_lastid;
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ldap_pvt_thread_mutex_unlock( &bdb->bi_lastid_mutex );
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return 0;
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}
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int bdb_last_id( BackendDB *be, DB_TXN *tid )
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{
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struct bdb_info *bdb = (struct bdb_info *) be->be_private;
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int rc;
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ID id = 0;
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unsigned char idbuf[sizeof(ID)];
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DBT key, data;
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DBC *cursor;
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DBTzero( &key );
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key.flags = DB_DBT_USERMEM;
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key.data = (char *) idbuf;
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key.ulen = sizeof( idbuf );
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DBTzero( &data );
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data.flags = DB_DBT_USERMEM | DB_DBT_PARTIAL;
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/* Get a read cursor */
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rc = bdb->bi_id2entry->bdi_db->cursor( bdb->bi_id2entry->bdi_db,
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tid, &cursor, 0 );
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if (rc == 0) {
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rc = cursor->c_get(cursor, &key, &data, DB_LAST);
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cursor->c_close(cursor);
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}
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switch(rc) {
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case DB_NOTFOUND:
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rc = 0;
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break;
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case 0:
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BDB_DISK2ID( idbuf, &id );
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break;
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default:
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Debug( LDAP_DEBUG_ANY,
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"=> bdb_last_id: get failed: %s (%d)\n",
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db_strerror(rc), rc, 0 );
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goto done;
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}
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bdb->bi_lastid = id;
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done:
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return rc;
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}
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