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https://git.openldap.org/openldap/openldap.git
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161 lines
3.2 KiB
C
161 lines
3.2 KiB
C
/* operational.c - bdb backend operational attributes function */
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/*
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* Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
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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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#include "proto-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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BackendDB *be,
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Connection *conn,
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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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struct bdb_info *bdb = (struct bdb_info *) be->be_private;
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int rc;
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DB_TXN *ltid = NULL;
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struct bdb_op_info opinfo;
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assert( e );
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assert( hasSubordinates );
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if( 0 ) {
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retry: /* transaction retry */
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#if 0
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if( e != NULL ) {
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bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
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}
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#endif
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#ifdef NEW_LOGGING
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LDAP_LOG ( OPERATION, DETAIL1,
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"=> bdb_hasSubordinates: retrying...\n", 0, 0, 0 );
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#else
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Debug( LDAP_DEBUG_TRACE, "==> bdb_hasSubordinates: retrying...\n",
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0, 0, 0 );
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#endif
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rc = TXN_ABORT( ltid );
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ltid = NULL;
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op->o_private = NULL;
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if( rc != 0 ) {
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rc = LDAP_OTHER;
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goto return_results;
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}
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ldap_pvt_thread_yield();
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}
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/* begin transaction */
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rc = TXN_BEGIN( bdb->bi_dbenv, NULL, <id, bdb->bi_db_opflags );
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if ( rc != 0 ) {
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#ifdef NEW_LOGGING
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LDAP_LOG ( OPERATION, ERR,
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"=> bdb_hasSubordinates: txn_begin failed: %s (%d)\n",
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db_strerror(rc), rc, 0 );
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#else
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Debug( LDAP_DEBUG_TRACE,
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"bdb_hasSubordinates: txn_begin failed: %s (%d)\n",
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db_strerror( rc ), rc, 0 );
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#endif
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rc = LDAP_OTHER;
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return rc;
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}
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opinfo.boi_bdb = be;
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opinfo.boi_txn = ltid;
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opinfo.boi_locker = TXN_ID ( ltid );
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opinfo.boi_err = 0;
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op->o_private = &opinfo;
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rc = bdb_dn2id_children( be, ltid, &e->e_nname, 0 );
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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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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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#ifdef NEW_LOGGING
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LDAP_LOG ( OPERATION, ERR,
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"=> bdb_hasSubordinates: has_children failed: %s (%d)\n",
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db_strerror(rc), rc, 0 );
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#else
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Debug(LDAP_DEBUG_ARGS,
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"<=- bdb_hasSubordinates: has_children failed: %s (%d)\n",
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db_strerror(rc), rc, 0 );
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#endif
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rc = LDAP_OTHER;
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}
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return_results:
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if ( rc == LDAP_SUCCESS && bdb->bi_txn_cp ) {
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ldap_pvt_thread_yield();
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TXN_CHECKPOINT( bdb->bi_dbenv,
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bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
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}
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if ( ltid != NULL ) {
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TXN_ABORT( ltid );
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op->o_private = NULL;
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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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BackendDB *be,
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Connection *conn,
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Operation *op,
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Entry *e,
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AttributeName *attrs,
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int opattrs,
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Attribute **a )
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{
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Attribute **aa = a;
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int rc = 0;
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assert( e );
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if ( opattrs || ad_inlist( slap_schema.si_ad_hasSubordinates, attrs ) ) {
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int hasSubordinates;
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rc = bdb_hasSubordinates( be, conn, op, e, &hasSubordinates );
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if ( rc == LDAP_SUCCESS ) {
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*aa = slap_operational_hasSubordinate( hasSubordinates == LDAP_COMPARE_TRUE );
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if ( *aa != NULL ) {
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aa = &(*aa)->a_next;
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}
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}
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}
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return rc;
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}
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