2000-09-22 14:46:32 +08:00
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/* id2entry.c - routines to deal with the id2entry database */
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/* $OpenLDAP$ */
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2003-11-29 05:08:20 +08:00
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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2004-01-02 03:15:16 +08:00
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* Copyright 2000-2004 The OpenLDAP Foundation.
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2003-11-29 05:08:20 +08:00
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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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2000-09-22 14:46:32 +08:00
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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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2003-04-23 14:34:55 +08:00
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static int bdb_id2entry_put(
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2000-09-26 07:41:16 +08:00
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BackendDB *be,
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2000-09-22 14:46:32 +08:00
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DB_TXN *tid,
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2001-12-06 11:26:37 +08:00
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Entry *e,
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int flag )
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2000-09-22 14:46:32 +08:00
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{
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struct bdb_info *bdb = (struct bdb_info *) be->be_private;
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2000-09-25 06:48:13 +08:00
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DB *db = bdb->bi_id2entry->bdi_db;
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2000-09-22 14:46:32 +08:00
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DBT key, data;
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2001-12-03 22:00:19 +08:00
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struct berval bv;
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2004-03-07 03:15:39 +08:00
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int rc;
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2004-12-06 15:28:47 +08:00
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ID nid;
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2001-12-07 20:38:25 +08:00
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#ifdef BDB_HIER
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2003-03-23 23:27:43 +08:00
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struct berval odn, ondn;
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2000-09-22 14:46:32 +08:00
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2003-04-22 21:14:06 +08:00
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/* We only store rdns, and they go in the dn2id database. */
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2001-12-07 20:38:25 +08:00
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2003-03-23 23:27:43 +08:00
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odn = e->e_name; ondn = e->e_nname;
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2001-12-07 20:38:25 +08:00
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2003-03-23 23:27:43 +08:00
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e->e_name = slap_empty_bv;
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e->e_nname = slap_empty_bv;
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2001-12-07 20:38:25 +08:00
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#endif
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2000-09-22 14:46:32 +08:00
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DBTzero( &key );
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2004-12-06 15:28:47 +08:00
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/* Store ID in BigEndian format */
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key.data = &nid;
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2000-09-22 14:46:32 +08:00
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key.size = sizeof(ID);
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2004-12-06 15:28:47 +08:00
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BDB_ID2DISK( e->e_id, &nid );
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2000-09-22 14:46:32 +08:00
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rc = entry_encode( e, &bv );
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2001-12-07 20:38:25 +08:00
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#ifdef BDB_HIER
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2003-03-23 23:27:43 +08:00
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e->e_name = odn; e->e_nname = ondn;
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2001-12-07 20:38:25 +08:00
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#endif
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2000-09-22 14:46:32 +08:00
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if( rc != LDAP_SUCCESS ) {
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return -1;
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}
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DBTzero( &data );
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2001-12-03 22:00:19 +08:00
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bv2DBT( &bv, &data );
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2000-09-22 14:46:32 +08:00
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2001-12-06 11:26:37 +08:00
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rc = db->put( db, tid, &key, &data, flag );
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2000-09-22 14:46:32 +08:00
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2001-12-03 22:00:19 +08:00
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free( bv.bv_val );
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2000-09-28 06:28:59 +08:00
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return rc;
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}
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2002-01-25 15:19:01 +08:00
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/*
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* This routine adds (or updates) an entry on disk.
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* The cache should be already be updated.
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*/
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2001-12-06 11:26:37 +08:00
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int bdb_id2entry_add(
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2000-09-28 06:28:59 +08:00
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BackendDB *be,
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DB_TXN *tid,
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Entry *e )
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{
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2001-12-07 20:38:25 +08:00
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return bdb_id2entry_put(be, tid, e, DB_NOOVERWRITE);
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2001-12-06 11:26:37 +08:00
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}
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2000-09-28 06:28:59 +08:00
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2001-12-06 11:26:37 +08:00
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int bdb_id2entry_update(
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BackendDB *be,
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DB_TXN *tid,
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Entry *e )
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{
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2001-12-07 20:38:25 +08:00
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return bdb_id2entry_put(be, tid, e, 0);
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2000-09-22 14:46:32 +08:00
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}
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2000-09-25 06:48:13 +08:00
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2003-04-17 00:23:36 +08:00
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int bdb_id2entry(
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2000-09-26 07:41:16 +08:00
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BackendDB *be,
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2000-09-25 06:48:13 +08:00
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DB_TXN *tid,
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ID id,
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2003-04-17 00:23:36 +08:00
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Entry **e )
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2000-09-25 06:48:13 +08:00
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{
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struct bdb_info *bdb = (struct bdb_info *) be->be_private;
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DB *db = bdb->bi_id2entry->bdi_db;
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DBT key, data;
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struct berval bv;
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2004-03-07 03:15:39 +08:00
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int rc = 0, ret = 0;
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2004-12-06 15:28:47 +08:00
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ID nid;
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2000-09-25 06:48:13 +08:00
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2000-09-26 02:59:15 +08:00
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*e = NULL;
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2000-09-25 06:48:13 +08:00
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DBTzero( &key );
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2004-12-06 15:28:47 +08:00
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key.data = &nid;
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2000-09-25 06:48:13 +08:00
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key.size = sizeof(ID);
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2004-12-06 15:28:47 +08:00
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BDB_ID2DISK( id, &nid );
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2000-09-25 06:48:13 +08:00
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DBTzero( &data );
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data.flags = DB_DBT_MALLOC;
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/* fetch it */
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2003-04-17 00:23:36 +08:00
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rc = db->get( db, tid, &key, &data, bdb->bi_db_opflags );
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2000-09-25 06:48:13 +08:00
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if( rc != 0 ) {
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return rc;
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}
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DBT2bv( &data, &bv );
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rc = entry_decode( &bv, e );
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2000-09-27 03:26:08 +08:00
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if( rc == 0 ) {
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(*e)->e_id = id;
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2001-10-22 22:07:42 +08:00
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} else {
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/* only free on error. On success, the entry was
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* decoded in place.
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*/
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ch_free( data.data );
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2000-09-27 03:26:08 +08:00
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}
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2002-01-25 15:19:01 +08:00
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2000-09-25 06:48:13 +08:00
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return rc;
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}
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int bdb_id2entry_delete(
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2000-09-26 07:41:16 +08:00
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BackendDB *be,
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2000-09-25 06:48:13 +08:00
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DB_TXN *tid,
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2002-01-25 15:19:01 +08:00
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Entry *e )
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2000-09-25 06:48:13 +08:00
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{
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struct bdb_info *bdb = (struct bdb_info *) be->be_private;
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DB *db = bdb->bi_id2entry->bdi_db;
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DBT key;
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2004-03-07 03:15:39 +08:00
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int rc;
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2004-12-06 15:28:47 +08:00
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ID nid;
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2000-09-25 06:48:13 +08:00
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DBTzero( &key );
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2004-12-06 15:28:47 +08:00
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key.data = &nid;
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2000-09-25 06:48:13 +08:00
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key.size = sizeof(ID);
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2004-12-06 15:28:47 +08:00
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BDB_ID2DISK( e->e_id, &nid );
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2000-09-25 06:48:13 +08:00
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2002-01-25 15:19:01 +08:00
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/* delete from database */
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2000-09-25 06:48:13 +08:00
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rc = db->del( db, tid, &key, 0 );
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return rc;
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}
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int bdb_entry_return(
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Entry *e )
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{
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2001-12-05 08:24:13 +08:00
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/* Our entries are allocated in two blocks; the data comes from
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* the db itself and the Entry structure and associated pointers
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* are allocated in entry_decode. The db data pointer is saved
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2002-01-25 15:19:01 +08:00
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* in e_bv. Since the Entry structure is allocated as a single
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2001-12-05 08:24:13 +08:00
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* block, e_attrs is always a fixed offset from e. The exception
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* is when an entry has been modified, in which case we also need
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* to free e_attrs.
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2001-10-22 22:07:42 +08:00
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*/
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2004-12-14 00:26:58 +08:00
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#ifdef LDAP_COMP_MATCH
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comp_tree_free( e->e_attrs );
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#endif
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2002-01-25 15:19:01 +08:00
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if( !e->e_bv.bv_val ) { /* A regular entry, from do_add */
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entry_free( e );
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return 0;
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}
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2001-12-05 08:24:13 +08:00
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if( (void *) e->e_attrs != (void *) (e+1)) {
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attrs_free( e->e_attrs );
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}
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2002-01-25 15:19:01 +08:00
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/* See if the DNs were changed by modrdn */
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if( e->e_nname.bv_val < e->e_bv.bv_val || e->e_nname.bv_val >
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e->e_bv.bv_val + e->e_bv.bv_len ) {
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ch_free(e->e_name.bv_val);
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ch_free(e->e_nname.bv_val);
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e->e_name.bv_val = NULL;
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e->e_nname.bv_val = NULL;
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}
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2003-05-24 09:54:03 +08:00
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#ifndef BDB_HIER
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2003-05-11 16:42:58 +08:00
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/* In tool mode the e_bv buffer is realloc'd, leave it alone */
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if( !(slapMode & SLAP_TOOL_MODE) ) {
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free( e->e_bv.bv_val );
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}
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2002-05-03 22:47:29 +08:00
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#else
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2003-05-11 16:42:58 +08:00
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free( e->e_bv.bv_val );
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2001-12-09 09:14:32 +08:00
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#endif
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2001-12-05 08:24:13 +08:00
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free( e );
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2001-10-22 22:07:42 +08:00
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2000-09-25 06:48:13 +08:00
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return 0;
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}
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2001-12-07 20:38:25 +08:00
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2001-11-27 17:34:53 +08:00
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int bdb_entry_release(
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Operation *o,
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Entry *e,
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int rw )
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{
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2003-03-30 17:03:54 +08:00
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struct bdb_info *bdb = (struct bdb_info *) o->o_bd->be_private;
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2003-03-26 21:33:51 +08:00
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struct bdb_op_info *boi = NULL;
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2002-01-25 15:19:01 +08:00
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/* slapMode : SLAP_SERVER_MODE, SLAP_TOOL_MODE,
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SLAP_TRUNCATE_MODE, SLAP_UNDEFINED_MODE */
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if ( slapMode == SLAP_SERVER_MODE ) {
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2004-07-04 12:56:36 +08:00
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/* If not in our cache, just free it */
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if ( !e->e_private ) {
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return bdb_entry_return( e );
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}
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2002-01-25 15:19:01 +08:00
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/* free entry and reader or writer lock */
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2003-03-26 21:33:51 +08:00
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if ( o ) {
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boi = (struct bdb_op_info *)o->o_private;
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}
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/* lock is freed with txn */
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2003-03-27 11:27:48 +08:00
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if ( !boi || boi->boi_txn ) {
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2003-03-26 21:33:51 +08:00
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bdb_unlocked_cache_return_entry_rw( &bdb->bi_cache, e, rw );
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} else {
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2004-12-05 10:00:19 +08:00
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struct bdb_lock_info *bli, *prev;
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for ( prev=(struct bdb_lock_info *)&boi->boi_locks,
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bli = boi->boi_locks; bli; prev=bli, bli=bli->bli_next ) {
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if ( bli->bli_id == e->e_id ) {
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bdb_cache_return_entry_rw( bdb->bi_dbenv, &bdb->bi_cache,
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e, rw, &bli->bli_lock );
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prev->bli_next = bli->bli_next;
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o->o_tmpfree( bli, o->o_tmpmemctx );
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break;
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}
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}
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if ( !boi->boi_locks ) {
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o->o_tmpfree( boi, o->o_tmpmemctx );
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o->o_private = NULL;
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}
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2003-03-26 21:33:51 +08:00
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}
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2002-01-25 15:19:01 +08:00
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} else {
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if (e->e_private != NULL)
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2003-04-22 21:14:06 +08:00
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BEI(e)->bei_e = NULL;
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2002-01-25 15:19:01 +08:00
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e->e_private = NULL;
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bdb_entry_return ( e );
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}
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return 0;
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2001-11-27 17:34:53 +08:00
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}
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2003-03-26 19:50:03 +08:00
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/* return LDAP_SUCCESS IFF we can retrieve the specified entry.
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*/
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int bdb_entry_get(
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Operation *op,
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struct berval *ndn,
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ObjectClass *oc,
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AttributeDescription *at,
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int rw,
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Entry **ent )
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{
|
2003-03-30 17:03:54 +08:00
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struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
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2003-03-26 19:50:03 +08:00
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struct bdb_op_info *boi = NULL;
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DB_TXN *txn = NULL;
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2003-05-02 21:38:16 +08:00
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Entry *e = NULL;
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2003-04-17 00:23:36 +08:00
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EntryInfo *ei;
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2003-03-26 19:50:03 +08:00
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int rc;
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2003-09-20 15:48:57 +08:00
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const char *at_name = at ? at->ad_cname.bv_val : "(null)";
|
2003-03-26 19:50:03 +08:00
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u_int32_t locker = 0;
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DB_LOCK lock;
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int free_lock_id = 0;
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Debug( LDAP_DEBUG_ARGS,
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"=> bdb_entry_get: ndn: \"%s\"\n", ndn->bv_val, 0, 0 );
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Debug( LDAP_DEBUG_ARGS,
|
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"=> bdb_entry_get: oc: \"%s\", at: \"%s\"\n",
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oc ? oc->soc_cname.bv_val : "(null)", at_name, 0);
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if( op ) boi = (struct bdb_op_info *) op->o_private;
|
2004-07-26 05:10:41 +08:00
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if( boi != NULL && op->o_bd->be_private == boi->boi_bdb->be_private ) {
|
2003-03-26 19:50:03 +08:00
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txn = boi->boi_txn;
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locker = boi->boi_locker;
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}
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|
if ( txn != NULL ) {
|
|
|
|
locker = TXN_ID ( txn );
|
|
|
|
} else if ( !locker ) {
|
|
|
|
rc = LOCK_ID ( bdb->bi_dbenv, &locker );
|
|
|
|
free_lock_id = 1;
|
|
|
|
switch(rc) {
|
|
|
|
case 0:
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return LDAP_OTHER;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
dn2entry_retry:
|
|
|
|
/* can we find entry */
|
2003-05-25 08:53:08 +08:00
|
|
|
rc = bdb_dn2entry( op, txn, ndn, &ei, 0, locker, &lock );
|
2003-03-26 19:50:03 +08:00
|
|
|
switch( rc ) {
|
|
|
|
case DB_NOTFOUND:
|
|
|
|
case 0:
|
|
|
|
break;
|
|
|
|
case DB_LOCK_DEADLOCK:
|
|
|
|
case DB_LOCK_NOTGRANTED:
|
|
|
|
/* the txn must abort and retry */
|
|
|
|
if ( txn ) {
|
|
|
|
boi->boi_err = rc;
|
|
|
|
return LDAP_BUSY;
|
|
|
|
}
|
|
|
|
ldap_pvt_thread_yield();
|
|
|
|
goto dn2entry_retry;
|
|
|
|
default:
|
2003-04-25 18:27:55 +08:00
|
|
|
if ( boi ) boi->boi_err = rc;
|
2003-03-26 19:50:03 +08:00
|
|
|
if ( free_lock_id ) {
|
|
|
|
LOCK_ID_FREE( bdb->bi_dbenv, locker );
|
|
|
|
}
|
|
|
|
return (rc != LDAP_BUSY) ? LDAP_OTHER : LDAP_BUSY;
|
|
|
|
}
|
2003-04-17 00:23:36 +08:00
|
|
|
if (ei) e = ei->bei_e;
|
2003-03-26 19:50:03 +08:00
|
|
|
if (e == NULL) {
|
|
|
|
Debug( LDAP_DEBUG_ACL,
|
|
|
|
"=> bdb_entry_get: cannot find entry: \"%s\"\n",
|
|
|
|
ndn->bv_val, 0, 0 );
|
|
|
|
if ( free_lock_id ) {
|
|
|
|
LOCK_ID_FREE( bdb->bi_dbenv, locker );
|
|
|
|
}
|
|
|
|
return LDAP_NO_SUCH_OBJECT;
|
|
|
|
}
|
|
|
|
|
|
|
|
Debug( LDAP_DEBUG_ACL,
|
|
|
|
"=> bdb_entry_get: found entry: \"%s\"\n",
|
|
|
|
ndn->bv_val, 0, 0 );
|
|
|
|
|
|
|
|
/* find attribute values */
|
|
|
|
if( is_entry_alias( e ) ) {
|
|
|
|
Debug( LDAP_DEBUG_ACL,
|
|
|
|
"<= bdb_entry_get: entry is an alias\n", 0, 0, 0 );
|
|
|
|
rc = LDAP_ALIAS_PROBLEM;
|
|
|
|
goto return_results;
|
|
|
|
}
|
|
|
|
|
|
|
|
if( is_entry_referral( e ) ) {
|
|
|
|
Debug( LDAP_DEBUG_ACL,
|
|
|
|
"<= bdb_entry_get: entry is a referral\n", 0, 0, 0 );
|
|
|
|
rc = LDAP_REFERRAL;
|
|
|
|
goto return_results;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ( oc && !is_entry_objectclass( e, oc, 0 )) {
|
|
|
|
Debug( LDAP_DEBUG_ACL,
|
|
|
|
"<= bdb_entry_get: failed to find objectClass\n",
|
|
|
|
0, 0, 0 );
|
|
|
|
rc = LDAP_NO_SUCH_ATTRIBUTE;
|
|
|
|
goto return_results;
|
|
|
|
}
|
|
|
|
|
|
|
|
return_results:
|
|
|
|
if( rc != LDAP_SUCCESS ) {
|
|
|
|
/* free entry */
|
|
|
|
bdb_cache_return_entry_rw(bdb->bi_dbenv, &bdb->bi_cache, e, rw, &lock);
|
2004-07-17 22:45:07 +08:00
|
|
|
|
2003-03-26 19:50:03 +08:00
|
|
|
} else {
|
2004-07-17 22:45:07 +08:00
|
|
|
if ( slapMode == SLAP_SERVER_MODE ) {
|
|
|
|
*ent = e;
|
|
|
|
/* big drag. we need a place to store a read lock so we can
|
2004-12-05 10:00:19 +08:00
|
|
|
* release it later?? If we're in a txn, nothing is needed
|
|
|
|
* here because the locks will go away with the txn.
|
2004-07-17 22:45:07 +08:00
|
|
|
*/
|
2004-12-05 10:00:19 +08:00
|
|
|
if ( op ) {
|
|
|
|
if ( !boi ) {
|
|
|
|
boi = op->o_tmpcalloc(1,sizeof(struct bdb_op_info),op->o_tmpmemctx);
|
|
|
|
boi->boi_bdb = op->o_bd;
|
|
|
|
op->o_private = boi;
|
|
|
|
}
|
|
|
|
if ( !boi->boi_txn ) {
|
|
|
|
struct bdb_lock_info *bli;
|
|
|
|
bli = op->o_tmpalloc( sizeof(struct bdb_lock_info),
|
|
|
|
op->o_tmpmemctx );
|
|
|
|
bli->bli_next = boi->boi_locks;
|
|
|
|
bli->bli_id = e->e_id;
|
|
|
|
bli->bli_lock = lock;
|
|
|
|
boi->boi_locks = bli;
|
|
|
|
}
|
2004-07-17 22:45:07 +08:00
|
|
|
}
|
|
|
|
} else {
|
|
|
|
*ent = entry_dup( e );
|
|
|
|
bdb_cache_return_entry_rw(bdb->bi_dbenv, &bdb->bi_cache, e, rw, &lock);
|
2003-03-26 21:33:51 +08:00
|
|
|
}
|
2003-03-26 19:50:03 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
if ( free_lock_id ) {
|
|
|
|
LOCK_ID_FREE( bdb->bi_dbenv, locker );
|
|
|
|
}
|
|
|
|
|
|
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
|
|
"bdb_entry_get: rc=%d\n",
|
|
|
|
rc, 0, 0 );
|
|
|
|
return(rc);
|
|
|
|
}
|