don't segfault if a database doesn't have the suffix

[openldap] / servers / slapd / back-bdb / operational.c

diff --git a/servers/slapd/back-bdb/operational.c b/servers/slapd/back-bdb/operational.c
index cfcf17cdb3d02ec46f62cdd2c1354923b7ffca93..52504708038d7377b141a21a6b730c8a496964c4 100644 (file)
--- a/servers/slapd/back-bdb/operational.c
+++ b/servers/slapd/back-bdb/operational.c
@@ -1,7 +1,17 @@
 /* operational.c - bdb backend operational attributes function */
-/*
- * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2004 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
  */
 
 #include "portable.h"
@@ -13,120 +23,82 @@
 
 #include "slap.h"
 #include "back-bdb.h"
-#include "proto-bdb.h"
+#include "external.h"
 
 /*
- * sets the supported operational attributes (if required)
+ * sets *hasSubordinates to LDAP_COMPARE_TRUE/LDAP_COMPARE_FALSE
+ * if the entry has children or not.
  */
-
 int
-bdb_operational(
-       BackendDB       *be,
-       Connection      *conn, 
+bdb_hasSubordinates(
        Operation       *op,
        Entry           *e,
-       AttributeName           *attrs,
-       int             opattrs,
-       Attribute       **a )
+       int             *hasSubordinates )
 {
-       struct bdb_info *bdb = (struct bdb_info *) be->be_private;
-       Attribute       **aa = a;
        int             rc;
-       DB_TXN          *ltid = NULL;
-    struct bdb_op_info opinfo;
        
        assert( e );
 
-       if ( !opattrs && !ad_inlist( slap_schema.si_ad_hasSubordinates, attrs ) ) {
-               return 0;
-       }
-
-
-       if( 0 ) {
-retry: /* transaction retry */
-#if 0
-               if( e != NULL ) {
-                       bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
-               }
-#endif
-#ifdef NEW_LOGGING
-               LDAP_LOG ( OPERATION, DETAIL1, 
-                       "=> bdb_operational: retrying...\n", 0, 0, 0 );
-#else
-               Debug( LDAP_DEBUG_TRACE, "==> bdb_operational: retrying...\n", 
-                               0, 0, 0 );
-#endif
-               rc = TXN_ABORT( ltid );
-               ltid = NULL;
-               op->o_private = NULL;
-               if( rc != 0 ) {
-                       rc = LDAP_OTHER;
-                       goto return_results;
-               }
-               ldap_pvt_thread_yield();
-       }
-
-       /* begin transaction */
-       rc = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid, bdb->bi_db_opflags );
-       if ( rc != 0 ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG ( OPERATION, ERR, 
-                       "=> bdb_operational: txn_begin failed: %s (%d)\n",
-                       db_strerror(rc), rc, 0 );
-#else
-               Debug( LDAP_DEBUG_TRACE,
-                       "bdb_operational: txn_begin failed: %s (%d)\n",
-                       db_strerror( rc ), rc, 0 );
-#endif
-               rc = LDAP_OTHER;
-               return rc;
-       }
-
-       opinfo.boi_bdb = be;
-       opinfo.boi_txn = ltid;
-       opinfo.boi_err = 0;
-       op->o_private = &opinfo;
-
-       rc = bdb_dn2id_children( be, ltid, &e->e_nname, 0 );
+retry:
+       rc = bdb_cache_children( op, NULL, e );
        
        switch( rc ) {
        case DB_LOCK_DEADLOCK:
        case DB_LOCK_NOTGRANTED:
+               ldap_pvt_thread_yield();
                goto retry;
 
        case 0:
+               *hasSubordinates = LDAP_COMPARE_TRUE;
+               break;
+
        case DB_NOTFOUND:
-               *aa = slap_operational_hasSubordinate( rc == 0 );
-               if ( *aa != NULL ) {
-                       aa = &(*aa)->a_next;
-               }
+               *hasSubordinates = LDAP_COMPARE_FALSE;
+               rc = LDAP_SUCCESS;
                break;
 
        default:
 #ifdef NEW_LOGGING
                LDAP_LOG ( OPERATION, ERR, 
-                       "=> bdb_operational: has_children failed: %s (%d)\n",
+                       "=> bdb_hasSubordinates: has_children failed: %s (%d)\n",
                        db_strerror(rc), rc, 0 );
 #else
                Debug(LDAP_DEBUG_ARGS, 
-                       "<=- bdb_operational: has_children failed: %s (%d)\n", 
+                       "<=- bdb_hasSubordinates: has_children failed: %s (%d)\n", 
                        db_strerror(rc), rc, 0 );
 #endif
                rc = LDAP_OTHER;
        }
 
-return_results:
-       if ( rc == LDAP_SUCCESS && bdb->bi_txn_cp ) {
-               ldap_pvt_thread_yield();
-               TXN_CHECKPOINT( bdb->bi_dbenv,
-                       bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
-       }
+       return rc;
+}
 
-       if ( ltid != NULL ) {
-               TXN_ABORT( ltid );
-               op->o_private = NULL;
+/*
+ * sets the supported operational attributes (if required)
+ */
+int
+bdb_operational(
+       Operation       *op,
+       SlapReply       *rs,
+       int             opattrs,
+       Attribute       **a )
+{
+       Attribute       **aa = a;
+       
+       assert( rs->sr_entry );
+
+       if ( opattrs || ad_inlist( slap_schema.si_ad_hasSubordinates, rs->sr_attrs ) ) {
+               int     hasSubordinates;
+
+               rs->sr_err = bdb_hasSubordinates( op, rs->sr_entry, &hasSubordinates );
+               if ( rs->sr_err == LDAP_SUCCESS ) {
+                       *aa = slap_operational_hasSubordinate( hasSubordinates == LDAP_COMPARE_TRUE );
+                       if ( *aa != NULL ) {
+                               aa = &(*aa)->a_next;
+                       }
+               }
        }
 
-       return rc;
+       return rs->sr_err;
 }