2003-11-27 09:17:14 +08:00
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/* ctxcsn.c -- Context CSN Management Routines */
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2003-08-23 10:51:33 +08:00
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/* $OpenLDAP$ */
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2003-11-27 09:17:14 +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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2008-01-08 08:19:56 +08:00
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* Copyright 2003-2008 The OpenLDAP Foundation.
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2003-11-27 09:17:14 +08:00
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* Portions Copyright 2003 IBM Corporation.
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* All rights reserved.
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2003-08-23 10:51:33 +08:00
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*
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2003-11-27 09:17:14 +08:00
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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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2003-08-23 10:51:33 +08:00
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*
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2003-11-27 09:17:14 +08:00
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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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2003-08-23 10:51:33 +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 <ac/socket.h>
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#include "lutil.h"
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#include "slap.h"
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#include "lutil_ldap.h"
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2003-09-24 06:52:35 +08:00
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const struct berval slap_ldapsync_bv = BER_BVC("ldapsync");
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const struct berval slap_ldapsync_cn_bv = BER_BVC("cn=ldapsync");
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2007-02-04 08:02:38 +08:00
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int slap_serverID;
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2003-09-24 06:52:35 +08:00
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void
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2004-12-08 08:46:14 +08:00
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slap_get_commit_csn(
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Operation *op,
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2006-08-15 16:51:49 +08:00
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struct berval *maxcsn
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2004-12-08 08:46:14 +08:00
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)
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2003-08-23 10:51:33 +08:00
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{
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2003-12-10 03:09:58 +08:00
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struct slap_csn_entry *csne, *committed_csne = NULL;
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2008-11-02 15:46:46 +08:00
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BackendDB *be = op->o_bd->bd_self;
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2003-08-23 10:51:33 +08:00
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2004-12-08 08:46:14 +08:00
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if ( maxcsn ) {
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BER_BVZERO( maxcsn );
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}
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2003-09-24 06:52:35 +08:00
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2008-11-02 15:46:46 +08:00
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ldap_pvt_thread_mutex_lock( be->be_pcl_mutexp );
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2003-08-23 10:51:33 +08:00
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2008-11-02 15:46:46 +08:00
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LDAP_TAILQ_FOREACH( csne, be->be_pending_csn_list, ce_csn_link ) {
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2004-04-06 09:48:36 +08:00
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if ( csne->ce_opid == op->o_opid && csne->ce_connid == op->o_connid ) {
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csne->ce_state = SLAP_CSN_COMMIT;
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2003-12-10 03:09:58 +08:00
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break;
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}
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2003-08-23 10:51:33 +08:00
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}
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2008-11-02 15:46:46 +08:00
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LDAP_TAILQ_FOREACH( csne, be->be_pending_csn_list, ce_csn_link ) {
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2004-04-06 09:48:36 +08:00
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if ( csne->ce_state == SLAP_CSN_COMMIT ) committed_csne = csne;
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if ( csne->ce_state == SLAP_CSN_PENDING ) break;
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2003-08-23 10:51:33 +08:00
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}
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2003-12-10 03:09:58 +08:00
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2004-12-08 08:46:14 +08:00
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if ( committed_csne && maxcsn ) *maxcsn = committed_csne->ce_csn;
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2008-11-02 15:46:46 +08:00
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ldap_pvt_thread_mutex_unlock( be->be_pcl_mutexp );
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2003-08-23 10:51:33 +08:00
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}
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void
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2003-08-26 03:15:04 +08:00
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slap_rewind_commit_csn( Operation *op )
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2003-08-23 10:51:33 +08:00
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{
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2003-12-10 03:09:58 +08:00
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struct slap_csn_entry *csne;
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2008-11-02 15:46:46 +08:00
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BackendDB *be = op->o_bd->bd_self;
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2003-08-23 10:51:33 +08:00
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2008-11-02 15:46:46 +08:00
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ldap_pvt_thread_mutex_lock( be->be_pcl_mutexp );
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2003-08-23 10:51:33 +08:00
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2008-11-02 15:46:46 +08:00
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LDAP_TAILQ_FOREACH( csne, be->be_pending_csn_list, ce_csn_link ) {
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2004-04-06 09:48:36 +08:00
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if ( csne->ce_opid == op->o_opid && csne->ce_connid == op->o_connid ) {
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csne->ce_state = SLAP_CSN_PENDING;
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2003-12-10 03:09:58 +08:00
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break;
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}
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2003-08-23 10:51:33 +08:00
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}
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2008-11-02 15:46:46 +08:00
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ldap_pvt_thread_mutex_unlock( be->be_pcl_mutexp );
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2003-08-23 10:51:33 +08:00
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}
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void
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2003-08-26 03:15:04 +08:00
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slap_graduate_commit_csn( Operation *op )
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2003-08-23 10:51:33 +08:00
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{
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2003-12-10 03:09:58 +08:00
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struct slap_csn_entry *csne;
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2008-11-02 15:46:46 +08:00
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BackendDB *be;
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2003-08-23 10:51:33 +08:00
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2004-04-06 09:48:36 +08:00
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if ( op == NULL ) return;
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if ( op->o_bd == NULL ) return;
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2008-11-02 15:46:46 +08:00
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be = op->o_bd->bd_self;
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2003-10-01 02:01:47 +08:00
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2004-12-11 23:44:30 +08:00
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#if 0
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/* it is NULL when we get here from the frontendDB;
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* alternate fix: initialize frontendDB like all other backends */
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2004-12-11 20:53:47 +08:00
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assert( op->o_bd->be_pcl_mutexp != NULL );
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2004-12-11 23:44:30 +08:00
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#endif
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2008-11-02 15:46:46 +08:00
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if ( be->be_pcl_mutexp == NULL ) return;
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2004-12-11 20:53:47 +08:00
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2008-11-02 15:46:46 +08:00
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ldap_pvt_thread_mutex_lock( be->be_pcl_mutexp );
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2003-08-23 10:51:33 +08:00
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2008-11-02 15:46:46 +08:00
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LDAP_TAILQ_FOREACH( csne, be->be_pending_csn_list, ce_csn_link ) {
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2004-04-06 09:48:36 +08:00
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if ( csne->ce_opid == op->o_opid && csne->ce_connid == op->o_connid ) {
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2008-11-02 15:46:46 +08:00
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LDAP_TAILQ_REMOVE( be->be_pending_csn_list,
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2004-04-06 09:48:36 +08:00
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csne, ce_csn_link );
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2008-02-10 10:18:22 +08:00
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Debug( LDAP_DEBUG_SYNC, "slap_graduate_commit_csn: removing %p %s\n",
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csne->ce_csn.bv_val, csne->ce_csn.bv_val, 0 );
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2005-10-13 19:58:44 +08:00
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if ( op->o_csn.bv_val == csne->ce_csn.bv_val ) {
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BER_BVZERO( &op->o_csn );
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}
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2004-12-07 07:17:58 +08:00
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ch_free( csne->ce_csn.bv_val );
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2003-12-10 03:09:58 +08:00
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ch_free( csne );
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break;
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}
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2003-08-23 10:51:33 +08:00
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}
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2008-11-02 15:46:46 +08:00
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ldap_pvt_thread_mutex_unlock( be->be_pcl_mutexp );
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2003-08-23 10:51:33 +08:00
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return;
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}
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2003-09-13 02:52:34 +08:00
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static struct berval ocbva[] = {
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BER_BVC("top"),
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BER_BVC("subentry"),
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BER_BVC("syncProviderSubentry"),
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2004-10-05 04:55:09 +08:00
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BER_BVNULL
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2003-09-13 02:52:34 +08:00
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};
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2003-08-23 10:51:33 +08:00
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Entry *
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2003-08-26 03:15:04 +08:00
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slap_create_context_csn_entry(
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2003-08-23 10:51:33 +08:00
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Backend *be,
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2004-04-06 09:48:36 +08:00
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struct berval *context_csn )
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2003-08-23 10:51:33 +08:00
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{
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Entry* e;
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2003-09-13 02:52:34 +08:00
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struct berval bv;
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2003-08-23 10:51:33 +08:00
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2006-08-29 09:43:23 +08:00
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e = entry_alloc();
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2003-08-23 10:51:33 +08:00
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2003-11-30 09:19:40 +08:00
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attr_merge( e, slap_schema.si_ad_objectClass,
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ocbva, NULL );
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attr_merge_one( e, slap_schema.si_ad_structuralObjectClass,
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&ocbva[1], NULL );
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attr_merge_one( e, slap_schema.si_ad_cn,
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(struct berval *)&slap_ldapsync_bv, NULL );
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2003-08-23 10:51:33 +08:00
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2003-09-13 02:52:34 +08:00
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if ( context_csn ) {
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attr_merge_one( e, slap_schema.si_ad_contextCSN,
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context_csn, NULL );
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2003-09-04 07:47:37 +08:00
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}
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2004-10-05 04:55:09 +08:00
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BER_BVSTR( &bv, "{}" );
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2003-09-13 02:52:34 +08:00
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attr_merge_one( e, slap_schema.si_ad_subtreeSpecification, &bv, NULL );
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2003-11-30 09:19:40 +08:00
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build_new_dn( &e->e_name, &be->be_nsuffix[0],
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(struct berval *)&slap_ldapsync_cn_bv, NULL );
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2003-09-13 03:40:04 +08:00
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ber_dupbv( &e->e_nname, &e->e_name );
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2003-09-13 02:52:34 +08:00
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2003-08-23 10:51:33 +08:00
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return e;
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}
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2004-11-26 17:40:22 +08:00
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void
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slap_queue_csn(
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Operation *op,
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struct berval *csn )
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{
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struct slap_csn_entry *pending;
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2008-11-02 15:46:46 +08:00
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BackendDB *be = op->o_bd->bd_self;
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2004-11-26 17:40:22 +08:00
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pending = (struct slap_csn_entry *) ch_calloc( 1,
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sizeof( struct slap_csn_entry ));
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2008-02-10 10:18:22 +08:00
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Debug( LDAP_DEBUG_SYNC, "slap_queue_csn: queing %p %s\n", csn->bv_val, csn->bv_val, 0 );
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2008-11-02 15:46:46 +08:00
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ldap_pvt_thread_mutex_lock( be->be_pcl_mutexp );
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2004-11-26 17:40:22 +08:00
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2004-12-07 07:17:58 +08:00
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ber_dupbv( &pending->ce_csn, csn );
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2006-01-07 00:26:36 +08:00
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ber_bvreplace_x( &op->o_csn, &pending->ce_csn, op->o_tmpmemctx );
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2004-11-26 17:40:22 +08:00
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pending->ce_connid = op->o_connid;
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pending->ce_opid = op->o_opid;
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pending->ce_state = SLAP_CSN_PENDING;
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2008-11-02 15:46:46 +08:00
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LDAP_TAILQ_INSERT_TAIL( be->be_pending_csn_list,
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2004-11-26 17:40:22 +08:00
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pending, ce_csn_link );
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2008-11-02 15:46:46 +08:00
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ldap_pvt_thread_mutex_unlock( be->be_pcl_mutexp );
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2004-11-26 17:40:22 +08:00
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}
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2003-08-26 03:15:04 +08:00
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int
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slap_get_csn(
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Operation *op,
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struct berval *csn,
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2004-04-06 09:48:36 +08:00
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int manage_ctxcsn )
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2003-08-26 03:15:04 +08:00
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{
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2003-11-30 09:19:40 +08:00
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if ( csn == NULL ) return LDAP_OTHER;
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2003-09-29 22:06:48 +08:00
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2007-02-11 21:52:55 +08:00
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/* gmtime doesn't always need a mutex, but lutil_csnstr does */
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2005-06-07 12:12:14 +08:00
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ldap_pvt_thread_mutex_lock( &gmtime_mutex );
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2007-02-04 08:02:38 +08:00
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csn->bv_len = lutil_csnstr( csn->bv_val, csn->bv_len, slap_serverID, 0 );
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2005-06-07 12:12:14 +08:00
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ldap_pvt_thread_mutex_unlock( &gmtime_mutex );
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2003-08-26 03:15:04 +08:00
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2004-11-26 17:40:22 +08:00
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if ( manage_ctxcsn )
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slap_queue_csn( op, csn );
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2003-08-26 03:15:04 +08:00
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return LDAP_SUCCESS;
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}
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