1 /* ctxcsn.c -- Context CSN Management Routines */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 2003-2005 The OpenLDAP Foundation.
6 * Portions Copyright 2003 IBM Corporation.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted only as authorized by the OpenLDAP
13 * A copy of this license is available in the file LICENSE in the
14 * top-level directory of the distribution or, alternatively, at
15 * <http://www.OpenLDAP.org/license.html>.
22 #include <ac/string.h>
23 #include <ac/socket.h>
27 #include "lutil_ldap.h"
29 const struct berval slap_ldapsync_bv = BER_BVC("ldapsync");
30 const struct berval slap_ldapsync_cn_bv = BER_BVC("cn=ldapsync");
35 struct berval *maxcsn,
39 struct slap_csn_entry *csne, *committed_csne = NULL;
45 ldap_pvt_thread_mutex_lock( op->o_bd->be_pcl_mutexp );
47 LDAP_TAILQ_FOREACH( csne, op->o_bd->be_pending_csn_list, ce_csn_link ) {
48 if ( csne->ce_opid == op->o_opid && csne->ce_connid == op->o_connid ) {
49 if ( curcsn ) *curcsn = csne->ce_csn;
50 csne->ce_state = SLAP_CSN_COMMIT;
55 LDAP_TAILQ_FOREACH( csne, op->o_bd->be_pending_csn_list, ce_csn_link ) {
56 if ( csne->ce_state == SLAP_CSN_COMMIT ) committed_csne = csne;
57 if ( csne->ce_state == SLAP_CSN_PENDING ) break;
60 if ( committed_csne && maxcsn ) *maxcsn = committed_csne->ce_csn;
61 ldap_pvt_thread_mutex_unlock( op->o_bd->be_pcl_mutexp );
65 slap_rewind_commit_csn( Operation *op )
67 struct slap_csn_entry *csne;
69 ldap_pvt_thread_mutex_lock( op->o_bd->be_pcl_mutexp );
71 LDAP_TAILQ_FOREACH( csne, op->o_bd->be_pending_csn_list, ce_csn_link ) {
72 if ( csne->ce_opid == op->o_opid && csne->ce_connid == op->o_connid ) {
73 csne->ce_state = SLAP_CSN_PENDING;
78 ldap_pvt_thread_mutex_unlock( op->o_bd->be_pcl_mutexp );
82 slap_graduate_commit_csn( Operation *op )
84 struct slap_csn_entry *csne;
86 if ( op == NULL ) return;
87 if ( op->o_bd == NULL ) return;
90 /* it is NULL when we get here from the frontendDB;
91 * alternate fix: initialize frontendDB like all other backends */
92 assert( op->o_bd->be_pcl_mutexp != NULL );
95 if ( op->o_bd->be_pcl_mutexp == NULL ) return;
97 ldap_pvt_thread_mutex_lock( op->o_bd->be_pcl_mutexp );
99 LDAP_TAILQ_FOREACH( csne, op->o_bd->be_pending_csn_list, ce_csn_link ) {
100 if ( csne->ce_opid == op->o_opid && csne->ce_connid == op->o_connid ) {
101 LDAP_TAILQ_REMOVE( op->o_bd->be_pending_csn_list,
103 if ( op->o_csn.bv_val == csne->ce_csn.bv_val ) {
104 BER_BVZERO( &op->o_csn );
106 ch_free( csne->ce_csn.bv_val );
112 ldap_pvt_thread_mutex_unlock( op->o_bd->be_pcl_mutexp );
117 static struct berval ocbva[] = {
120 BER_BVC("syncProviderSubentry"),
125 slap_create_context_csn_entry(
127 struct berval *context_csn )
133 e = (Entry *) ch_calloc( 1, sizeof( Entry ));
135 attr_merge( e, slap_schema.si_ad_objectClass,
137 attr_merge_one( e, slap_schema.si_ad_structuralObjectClass,
139 attr_merge_one( e, slap_schema.si_ad_cn,
140 (struct berval *)&slap_ldapsync_bv, NULL );
143 attr_merge_one( e, slap_schema.si_ad_contextCSN,
147 BER_BVSTR( &bv, "{}" );
148 attr_merge_one( e, slap_schema.si_ad_subtreeSpecification, &bv, NULL );
150 build_new_dn( &e->e_name, &be->be_nsuffix[0],
151 (struct berval *)&slap_ldapsync_cn_bv, NULL );
152 ber_dupbv( &e->e_nname, &e->e_name );
162 struct slap_csn_entry *pending;
164 pending = (struct slap_csn_entry *) ch_calloc( 1,
165 sizeof( struct slap_csn_entry ));
166 ldap_pvt_thread_mutex_lock( op->o_bd->be_pcl_mutexp );
168 ber_dupbv( &pending->ce_csn, csn );
169 ber_dupbv_x( &op->o_csn, &pending->ce_csn, op->o_tmpmemctx );
170 pending->ce_connid = op->o_connid;
171 pending->ce_opid = op->o_opid;
172 pending->ce_state = SLAP_CSN_PENDING;
173 LDAP_TAILQ_INSERT_TAIL( op->o_bd->be_pending_csn_list,
174 pending, ce_csn_link );
175 ldap_pvt_thread_mutex_unlock( op->o_bd->be_pcl_mutexp );
184 if ( csn == NULL ) return LDAP_OTHER;
186 #ifndef HAVE_GMTIME_R
187 ldap_pvt_thread_mutex_lock( &gmtime_mutex );
189 csn->bv_len = lutil_csnstr( csn->bv_val, csn->bv_len, 0, 0 );
190 #ifndef HAVE_GMTIME_R
191 ldap_pvt_thread_mutex_unlock( &gmtime_mutex );
195 slap_queue_csn( op, csn );