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114 lines
2.4 KiB
C
114 lines
2.4 KiB
C
/* operational.c - bdb backend operational attributes function */
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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 2000-2005 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 <ac/socket.h>
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#include "slap.h"
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#include "back-bdb.h"
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/*
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* sets *hasSubordinates to LDAP_COMPARE_TRUE/LDAP_COMPARE_FALSE
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* if the entry has children or not.
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*/
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int
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bdb_hasSubordinates(
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Operation *op,
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Entry *e,
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int *hasSubordinates )
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{
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int rc;
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assert( e );
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/* NOTE: this should never happen, but it actually happens
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* when using back-relay; until we find a better way to
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* preserve entry's private information while rewriting it,
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* let's disable the hasSubordinate feature for back-relay.
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*/
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if ( BEI( e ) == NULL ) {
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return LDAP_OTHER;
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}
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retry:
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/* FIXME: we can no longer assume the entry's e_private
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* field is correctly populated; so we need to reacquire
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* it with reader lock */
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rc = bdb_cache_children( op, NULL, e );
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switch( rc ) {
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case DB_LOCK_DEADLOCK:
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case DB_LOCK_NOTGRANTED:
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ldap_pvt_thread_yield();
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goto retry;
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case 0:
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*hasSubordinates = LDAP_COMPARE_TRUE;
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break;
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case DB_NOTFOUND:
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*hasSubordinates = LDAP_COMPARE_FALSE;
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rc = LDAP_SUCCESS;
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break;
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default:
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Debug(LDAP_DEBUG_ARGS,
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"<=- " LDAP_XSTRING(bdb_hasSubordinates)
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": has_children failed: %s (%d)\n",
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db_strerror(rc), rc, 0 );
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rc = LDAP_OTHER;
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}
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return rc;
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}
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/*
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* sets the supported operational attributes (if required)
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*/
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int
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bdb_operational(
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Operation *op,
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SlapReply *rs )
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{
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Attribute **ap;
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assert( rs->sr_entry );
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for ( ap = &rs->sr_operational_attrs; *ap; ap = &(*ap)->a_next )
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/* just count */ ;
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if ( SLAP_OPATTRS( rs->sr_attr_flags ) ||
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ad_inlist( slap_schema.si_ad_hasSubordinates, rs->sr_attrs ) )
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{
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int hasSubordinates, rc;
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rc = bdb_hasSubordinates( op, rs->sr_entry, &hasSubordinates );
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if ( rc == LDAP_SUCCESS ) {
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*ap = slap_operational_hasSubordinate( hasSubordinates == LDAP_COMPARE_TRUE );
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assert( *ap );
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ap = &(*ap)->a_next;
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}
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}
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return LDAP_SUCCESS;
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}
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