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openldap  2.4.31
Functions | Variables
ctxcsn.c File Reference
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include <ac/socket.h>
#include "lutil.h"
#include "slap.h"
#include "lutil_ldap.h"

Go to the source code of this file.

Functions

void slap_get_commit_csn (Operation *op, struct berval *maxcsn, int *foundit)
void slap_rewind_commit_csn (Operation *op)
void slap_graduate_commit_csn (Operation *op)
Entryslap_create_context_csn_entry (Backend *be, struct berval *context_csn)
void slap_queue_csn (Operation *op, struct berval *csn)
int slap_get_csn (Operation *op, struct berval *csn, int manage_ctxcsn)

Variables

int slap_serverID
static struct berval []

Function Documentation

Entry* slap_create_context_csn_entry ( Backend be,
struct berval context_csn 
)

Definition at line 146 of file ctxcsn.c.

{
       Entry* e;

       struct berval bv;

       e = entry_alloc();

       attr_merge( e, slap_schema.si_ad_objectClass,
              ocbva, NULL );
       attr_merge_one( e, slap_schema.si_ad_structuralObjectClass,
              &ocbva[1], NULL );
       attr_merge_one( e, slap_schema.si_ad_cn,
              (struct berval *)&slap_ldapsync_bv, NULL );

       if ( context_csn ) {
              attr_merge_one( e, slap_schema.si_ad_contextCSN,
                     context_csn, NULL );
       }

       BER_BVSTR( &bv, "{}" );
       attr_merge_one( e, slap_schema.si_ad_subtreeSpecification, &bv, NULL );

       build_new_dn( &e->e_name, &be->be_nsuffix[0],
              (struct berval *)&slap_ldapsync_cn_bv, NULL );
       ber_dupbv( &e->e_nname, &e->e_name );

       return e;
}

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void slap_get_commit_csn ( Operation op,
struct berval maxcsn,
int foundit 
)

Definition at line 35 of file ctxcsn.c.

{
       struct slap_csn_entry *csne, *committed_csne = NULL;
       BackendDB *be = op->o_bd->bd_self;
       int sid = -1;

       if ( maxcsn ) {
              assert( maxcsn->bv_val != NULL );
              assert( maxcsn->bv_len >= LDAP_PVT_CSNSTR_BUFSIZE );
       }
       if ( foundit ) {
              *foundit = 0;
       }

       ldap_pvt_thread_mutex_lock( &be->be_pcl_mutex );

       if ( !BER_BVISEMPTY( &op->o_csn )) {
              sid = slap_parse_csn_sid( &op->o_csn );
       }

       LDAP_TAILQ_FOREACH( csne, be->be_pending_csn_list, ce_csn_link ) {
              if ( csne->ce_opid == op->o_opid && csne->ce_connid == op->o_connid ) {
                     csne->ce_state = SLAP_CSN_COMMIT;
                     if ( foundit ) *foundit = 1;
                     break;
              }
       }

       LDAP_TAILQ_FOREACH( csne, be->be_pending_csn_list, ce_csn_link ) {
              if ( sid != -1 && sid == csne->ce_sid ) {
                     if ( csne->ce_state == SLAP_CSN_COMMIT ) committed_csne = csne;
                     if ( csne->ce_state == SLAP_CSN_PENDING ) break;
              }
       }

       if ( maxcsn ) {
              if ( committed_csne ) {
                     if ( committed_csne->ce_csn.bv_len < maxcsn->bv_len )
                            maxcsn->bv_len = committed_csne->ce_csn.bv_len;
                     AC_MEMCPY( maxcsn->bv_val, committed_csne->ce_csn.bv_val,
                            maxcsn->bv_len+1 );
              } else {
                     maxcsn->bv_len = 0;
                     maxcsn->bv_val[0] = 0;
              }
       }
       ldap_pvt_thread_mutex_unlock( &be->be_pcl_mutex );
}

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int slap_get_csn ( Operation op,
struct berval csn,
int  manage_ctxcsn 
)

Definition at line 205 of file ctxcsn.c.

{
       if ( csn == NULL ) return LDAP_OTHER;

       csn->bv_len = ldap_pvt_csnstr( csn->bv_val, csn->bv_len, slap_serverID, 0 );
       if ( manage_ctxcsn )
              slap_queue_csn( op, csn );

       return LDAP_SUCCESS;
}

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Definition at line 107 of file ctxcsn.c.

{
       struct slap_csn_entry *csne;
       BackendDB *be;

       if ( op == NULL ) return;
       if ( op->o_bd == NULL ) return;
       be = op->o_bd->bd_self;

       ldap_pvt_thread_mutex_lock( &be->be_pcl_mutex );

       LDAP_TAILQ_FOREACH( csne, be->be_pending_csn_list, ce_csn_link ) {
              if ( csne->ce_opid == op->o_opid && csne->ce_connid == op->o_connid ) {
                     LDAP_TAILQ_REMOVE( be->be_pending_csn_list,
                            csne, ce_csn_link );
                     Debug( LDAP_DEBUG_SYNC, "slap_graduate_commit_csn: removing %p %s\n",
                            csne->ce_csn.bv_val, csne->ce_csn.bv_val, 0 );
                     if ( op->o_csn.bv_val == csne->ce_csn.bv_val ) {
                            BER_BVZERO( &op->o_csn );
                     }
                     ch_free( csne->ce_csn.bv_val );
                     ch_free( csne );
                     break;
              }
       }

       ldap_pvt_thread_mutex_unlock( &be->be_pcl_mutex );

       return;
}

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void slap_queue_csn ( Operation op,
struct berval csn 
)

Definition at line 179 of file ctxcsn.c.

{
       struct slap_csn_entry *pending;
       BackendDB *be = op->o_bd->bd_self;

       pending = (struct slap_csn_entry *) ch_calloc( 1,
                     sizeof( struct slap_csn_entry ));

       Debug( LDAP_DEBUG_SYNC, "slap_queue_csn: queing %p %s\n", csn->bv_val, csn->bv_val, 0 );

       ldap_pvt_thread_mutex_lock( &be->be_pcl_mutex );

       ber_dupbv( &pending->ce_csn, csn );
       ber_bvreplace_x( &op->o_csn, &pending->ce_csn, op->o_tmpmemctx );
       pending->ce_sid = slap_parse_csn_sid( csn );
       pending->ce_connid = op->o_connid;
       pending->ce_opid = op->o_opid;
       pending->ce_state = SLAP_CSN_PENDING;
       LDAP_TAILQ_INSERT_TAIL( be->be_pending_csn_list,
              pending, ce_csn_link );
       ldap_pvt_thread_mutex_unlock( &be->be_pcl_mutex );
}

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Definition at line 89 of file ctxcsn.c.

{
       struct slap_csn_entry *csne;
       BackendDB *be = op->o_bd->bd_self;

       ldap_pvt_thread_mutex_lock( &be->be_pcl_mutex );

       LDAP_TAILQ_FOREACH( csne, be->be_pending_csn_list, ce_csn_link ) {
              if ( csne->ce_opid == op->o_opid && csne->ce_connid == op->o_connid ) {
                     csne->ce_state = SLAP_CSN_PENDING;
                     break;
              }
       }

       ldap_pvt_thread_mutex_unlock( &be->be_pcl_mutex );
}

Variable Documentation

struct berval[] [static]
Initial value:
 {
       BER_BVC("top"),
       BER_BVC("subentry"),
       BER_BVC("syncProviderSubentry"),
       BER_BVNULL
}

Definition at line 138 of file ctxcsn.c.

Definition at line 31 of file ctxcsn.c.