external/bsd/openldap/dist/servers/slapd/back-bdb/dn2entry.c

   1 /* dn2entry.c - routines to deal with the dn2id / id2entry glue */
   2 /* $OpenLDAP: pkg/ldap/servers/slapd/back-bdb/dn2entry.c,v 1.28.2.7 2008/02/11 23:26:45 kurt Exp $ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2000-2008 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16
  17 #include "portable.h"
  18
  19 #include <stdio.h>
  20 #include <ac/string.h>
  21
  22 #include "back-bdb.h"
  23
  24 /*
  25  * dn2entry - look up dn in the cache/indexes and return the corresponding
  26  * entry. If the requested DN is not found and matched is TRUE, return info
  27  * for the closest ancestor of the DN. Otherwise e is NULL.
  28  */
  29
  30 int
  31 bdb_dn2entry(
  32         Operation *op,
  33         DB_TXN *tid,
  34         struct berval *dn,
  35         EntryInfo **e,
  36         int matched,
  37         BDB_LOCKER locker,
  38         DB_LOCK *lock )
  39 {
  40         EntryInfo *ei = NULL;
  41         int rc, rc2;
  42
  43         Debug(LDAP_DEBUG_TRACE, "bdb_dn2entry(\"%s\")\n",
  44                 dn->bv_val, 0, 0 );
  45
  46         *e = NULL;
  47
  48         rc = bdb_cache_find_ndn( op, locker, dn, &ei );
  49         if ( rc ) {
  50                 if ( matched && rc == DB_NOTFOUND ) {
  51                         /* Set the return value, whether we have its entry
  52                          * or not.
  53                          */
  54                         *e = ei;
  55                         if ( ei && ei->bei_id ) {
  56                                 rc2 = bdb_cache_find_id( op, tid, ei->bei_id,
  57                                         &ei, ID_LOCKED, locker, lock );
  58                                 if ( rc2 ) rc = rc2;
  59                         } else if ( ei ) {
  60                                 bdb_cache_entryinfo_unlock( ei );
  61                                 memset( lock, 0, sizeof( *lock ));
  62                                 lock->mode = DB_LOCK_NG;
  63                         }
  64                 } else if ( ei ) {
  65                         bdb_cache_entryinfo_unlock( ei );
  66                 }
  67         } else {
  68                 rc = bdb_cache_find_id( op, tid, ei->bei_id, &ei, ID_LOCKED,
  69                         locker, lock );
  70                 if ( rc == 0 ) {
  71                         *e = ei;
  72                 } else if ( matched && rc == DB_NOTFOUND ) {
  73                         /* always return EntryInfo */
  74                         if ( ei->bei_parent ) {
  75                                 ei = ei->bei_parent;
  76                                 rc2 = bdb_cache_find_id( op, tid, ei->bei_id, &ei, 0,
  77                                         locker, lock );
  78                                 if ( rc2 ) rc = rc2;
  79                         }
  80                         *e = ei;
  81                 }
  82         }
  83
  84         return rc;
  85 }