1 /* ctxcsn.c -- Context CSN Management Routines */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 2003-2009 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");
36 struct berval *maxcsn,
40 struct slap_csn_entry *csne, *committed_csne = NULL;
41 BackendDB *be = op->o_bd->bd_self;
50 ldap_pvt_thread_mutex_lock( &be->be_pcl_mutex );
52 LDAP_TAILQ_FOREACH( csne, be->be_pending_csn_list, ce_csn_link ) {
53 if ( csne->ce_opid == op->o_opid && csne->ce_connid == op->o_connid ) {
54 csne->ce_state = SLAP_CSN_COMMIT;
55 if ( foundit ) *foundit = 1;
60 LDAP_TAILQ_FOREACH( csne, be->be_pending_csn_list, ce_csn_link ) {
61 if ( csne->ce_state == SLAP_CSN_COMMIT ) committed_csne = csne;
62 if ( csne->ce_state == SLAP_CSN_PENDING ) break;
65 if ( committed_csne && maxcsn ) *maxcsn = committed_csne->ce_csn;
66 ldap_pvt_thread_mutex_unlock( &be->be_pcl_mutex );
70 slap_rewind_commit_csn( Operation *op )
72 struct slap_csn_entry *csne;
73 BackendDB *be = op->o_bd->bd_self;
75 ldap_pvt_thread_mutex_lock( &be->be_pcl_mutex );
77 LDAP_TAILQ_FOREACH( csne, be->be_pending_csn_list, ce_csn_link ) {
78 if ( csne->ce_opid == op->o_opid && csne->ce_connid == op->o_connid ) {
79 csne->ce_state = SLAP_CSN_PENDING;
84 ldap_pvt_thread_mutex_unlock( &be->be_pcl_mutex );
88 slap_graduate_commit_csn( Operation *op )
90 struct slap_csn_entry *csne;
93 if ( op == NULL ) return;
94 if ( op->o_bd == NULL ) return;
95 be = op->o_bd->bd_self;
97 ldap_pvt_thread_mutex_lock( &be->be_pcl_mutex );
99 LDAP_TAILQ_FOREACH( csne, be->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( be->be_pending_csn_list,
103 Debug( LDAP_DEBUG_SYNC, "slap_graduate_commit_csn: removing %p %s\n",
104 csne->ce_csn.bv_val, csne->ce_csn.bv_val, 0 );
105 if ( op->o_csn.bv_val == csne->ce_csn.bv_val ) {
106 BER_BVZERO( &op->o_csn );
108 ch_free( csne->ce_csn.bv_val );
114 ldap_pvt_thread_mutex_unlock( &be->be_pcl_mutex );
119 static struct berval ocbva[] = {
122 BER_BVC("syncProviderSubentry"),
127 slap_create_context_csn_entry(
129 struct berval *context_csn )
137 attr_merge( e, slap_schema.si_ad_objectClass,
139 attr_merge_one( e, slap_schema.si_ad_structuralObjectClass,
141 attr_merge_one( e, slap_schema.si_ad_cn,
142 (struct berval *)&slap_ldapsync_bv, NULL );
145 attr_merge_one( e, slap_schema.si_ad_contextCSN,
149 BER_BVSTR( &bv, "{}" );
150 attr_merge_one( e, slap_schema.si_ad_subtreeSpecification, &bv, NULL );
152 build_new_dn( &e->e_name, &be->be_nsuffix[0],
153 (struct berval *)&slap_ldapsync_cn_bv, NULL );
154 ber_dupbv( &e->e_nname, &e->e_name );
164 struct slap_csn_entry *pending;
165 BackendDB *be = op->o_bd->bd_self;
167 pending = (struct slap_csn_entry *) ch_calloc( 1,
168 sizeof( struct slap_csn_entry ));
170 Debug( LDAP_DEBUG_SYNC, "slap_queue_csn: queing %p %s\n", csn->bv_val, csn->bv_val, 0 );
172 ldap_pvt_thread_mutex_lock( &be->be_pcl_mutex );
174 ber_dupbv( &pending->ce_csn, csn );
175 ber_bvreplace_x( &op->o_csn, &pending->ce_csn, op->o_tmpmemctx );
176 pending->ce_connid = op->o_connid;
177 pending->ce_opid = op->o_opid;
178 pending->ce_state = SLAP_CSN_PENDING;
179 LDAP_TAILQ_INSERT_TAIL( be->be_pending_csn_list,
180 pending, ce_csn_link );
181 ldap_pvt_thread_mutex_unlock( &be->be_pcl_mutex );
190 if ( csn == NULL ) return LDAP_OTHER;
192 /* gmtime doesn't always need a mutex, but lutil_csnstr does */
193 ldap_pvt_thread_mutex_lock( &gmtime_mutex );
194 csn->bv_len = lutil_csnstr( csn->bv_val, csn->bv_len, slap_serverID, 0 );
196 slap_queue_csn( op, csn );
198 ldap_pvt_thread_mutex_unlock( &gmtime_mutex );