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617 lines
15 KiB
C
617 lines
15 KiB
C
/* delete.c - bdb backend delete routine */
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/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 2000-2004 The OpenLDAP Foundation.
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* All rights reserved.
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*
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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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*
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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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*/
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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 "back-bdb.h"
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int
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bdb_delete( Operation *op, SlapReply *rs )
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{
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struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
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Entry *matched = NULL;
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struct berval pdn = {0, NULL};
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Entry *e = NULL;
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Entry *p = NULL;
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EntryInfo *ei = NULL, *eip = NULL;
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int manageDSAit = get_manageDSAit( op );
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AttributeDescription *children = slap_schema.si_ad_children;
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AttributeDescription *entry = slap_schema.si_ad_entry;
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DB_TXN *ltid = NULL, *lt2;
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struct bdb_op_info opinfo = {0};
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ID eid;
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u_int32_t locker = 0;
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DB_LOCK lock, plock;
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int num_retries = 0;
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Operation* ps_list;
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int rc;
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EntryInfo *suffix_ei;
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Entry *ctxcsn_e;
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int ctxcsn_added = 0;
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LDAPControl **preread_ctrl = NULL;
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LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
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int num_ctrls = 0;
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int parent_is_glue = 0;
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int parent_is_leaf = 0;
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struct berval ctxcsn_ndn = BER_BVNULL;
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ctrls[num_ctrls] = 0;
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Debug( LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(bdb_delete) ": %s\n",
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op->o_req_dn.bv_val, 0, 0 );
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build_new_dn( &ctxcsn_ndn, &op->o_bd->be_nsuffix[0],
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(struct berval *)&slap_ldapsync_cn_bv, op->o_tmpmemctx );
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if( 0 ) {
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retry: /* transaction retry */
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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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e = NULL;
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}
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if( p != NULL ) {
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bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p);
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p = NULL;
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}
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Debug( LDAP_DEBUG_TRACE,
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"==> " LDAP_XSTRING(bdb_delete) ": retrying...\n",
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0, 0, 0 );
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rs->sr_err = TXN_ABORT( ltid );
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ltid = NULL;
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op->o_private = NULL;
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op->o_do_not_cache = opinfo.boi_acl_cache;
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if( rs->sr_err != 0 ) {
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rs->sr_err = LDAP_OTHER;
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rs->sr_text = "internal error";
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goto return_results;
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}
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parent_is_glue = 0;
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parent_is_leaf = 0;
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ldap_pvt_thread_yield();
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bdb_trans_backoff( ++num_retries );
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}
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/* begin transaction */
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rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, <id,
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bdb->bi_db_opflags );
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rs->sr_text = NULL;
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if( rs->sr_err != 0 ) {
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Debug( LDAP_DEBUG_TRACE,
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LDAP_XSTRING(bdb_delete) ": txn_begin failed: "
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"%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
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rs->sr_err = LDAP_OTHER;
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rs->sr_text = "internal error";
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goto return_results;
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}
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locker = TXN_ID ( ltid );
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opinfo.boi_bdb = op->o_bd;
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opinfo.boi_txn = ltid;
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opinfo.boi_locker = locker;
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opinfo.boi_err = 0;
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opinfo.boi_acl_cache = op->o_do_not_cache;
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op->o_private = &opinfo;
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if ( !be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
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dnParent( &op->o_req_ndn, &pdn );
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}
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/* get entry */
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rs->sr_err = bdb_dn2entry( op, ltid, &op->o_req_ndn, &ei, 1,
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locker, &lock );
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switch( rs->sr_err ) {
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case 0:
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case DB_NOTFOUND:
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break;
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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 LDAP_BUSY:
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rs->sr_text = "ldap server busy";
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goto return_results;
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default:
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rs->sr_err = LDAP_OTHER;
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rs->sr_text = "internal error";
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goto return_results;
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}
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if ( rs->sr_err == 0 ) {
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e = ei->bei_e;
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eip = ei->bei_parent;
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} else {
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matched = ei->bei_e;
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}
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/* FIXME : dn2entry() should return non-glue entry */
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if ( e == NULL || ( !manageDSAit && is_entry_glue( e ))) {
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BerVarray deref = NULL;
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Debug( LDAP_DEBUG_ARGS,
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"<=- " LDAP_XSTRING(bdb_delete) ": no such object %s\n",
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op->o_req_dn.bv_val, 0, 0);
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if ( matched != NULL ) {
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rs->sr_matched = ch_strdup( matched->e_dn );
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rs->sr_ref = is_entry_referral( matched )
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? get_entry_referrals( op, matched )
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: NULL;
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bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, matched);
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matched = NULL;
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} else {
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if ( !LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
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syncinfo_t *si;
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LDAP_STAILQ_FOREACH( si, &op->o_bd->be_syncinfo, si_next ) {
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struct berval tmpbv;
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ber_dupbv( &tmpbv, &si->si_provideruri_bv[0] );
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ber_bvarray_add( &deref, &tmpbv );
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}
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} else {
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deref = default_referral;
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}
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rs->sr_ref = referral_rewrite( deref, NULL, &op->o_req_dn,
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LDAP_SCOPE_DEFAULT );
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}
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rs->sr_err = LDAP_REFERRAL;
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send_ldap_result( op, rs );
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if ( rs->sr_ref != default_referral ) {
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ber_bvarray_free( rs->sr_ref );
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}
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if ( deref != default_referral ) {
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ber_bvarray_free( deref );
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}
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free( (char *)rs->sr_matched );
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rs->sr_ref = NULL;
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rs->sr_matched = NULL;
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rs->sr_err = -1;
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goto done;
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}
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rc = bdb_cache_find_id( op, ltid, eip->bei_id, &eip, 0, locker, &plock );
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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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case DB_NOTFOUND:
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break;
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default:
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rs->sr_err = LDAP_OTHER;
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rs->sr_text = "internal error";
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goto return_results;
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}
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if ( eip ) p = eip->bei_e;
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if ( pdn.bv_len != 0 ) {
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if( p == NULL || !bvmatch( &pdn, &p->e_nname )) {
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Debug( LDAP_DEBUG_TRACE,
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"<=- " LDAP_XSTRING(bdb_delete) ": parent "
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"does not exist\n", 0, 0, 0 );
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rs->sr_err = LDAP_OTHER;
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rs->sr_text = "could not locate parent of entry";
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goto return_results;
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}
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/* check parent for "children" acl */
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rs->sr_err = access_allowed( op, p,
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children, NULL, ACL_WRITE, NULL );
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if ( !rs->sr_err ) {
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switch( opinfo.boi_err ) {
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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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}
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Debug( LDAP_DEBUG_TRACE,
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"<=- " LDAP_XSTRING(bdb_delete) ": no write "
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"access to parent\n", 0, 0, 0 );
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rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
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rs->sr_text = "no write access to parent";
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goto return_results;
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}
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} else {
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/* no parent, must be root to delete */
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if( ! be_isroot( op ) ) {
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if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv )
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|| be_shadow_update( op ) ) {
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p = (Entry *)&slap_entry_root;
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/* check parent for "children" acl */
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rs->sr_err = access_allowed( op, p,
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children, NULL, ACL_WRITE, NULL );
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p = NULL;
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if ( !rs->sr_err ) {
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switch( opinfo.boi_err ) {
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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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}
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Debug( LDAP_DEBUG_TRACE,
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"<=- " LDAP_XSTRING(bdb_delete)
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": no access to parent\n",
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0, 0, 0 );
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rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
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rs->sr_text = "no write access to parent";
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goto return_results;
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}
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} else {
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Debug( LDAP_DEBUG_TRACE,
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"<=- " LDAP_XSTRING(bdb_delete)
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": no parent and not root\n", 0, 0, 0 );
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rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
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goto return_results;
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}
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}
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}
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if ( get_assert( op ) &&
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( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
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{
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rs->sr_err = LDAP_ASSERTION_FAILED;
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goto return_results;
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}
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rs->sr_err = access_allowed( op, e,
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entry, NULL, ACL_WRITE, NULL );
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if ( !rs->sr_err ) {
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switch( opinfo.boi_err ) {
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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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}
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Debug( LDAP_DEBUG_TRACE,
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"<=- " LDAP_XSTRING(bdb_delete) ": no write access "
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"to entry\n", 0, 0, 0 );
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rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
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rs->sr_text = "no write access to entry";
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goto return_results;
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}
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if ( !manageDSAit && is_entry_referral( e ) ) {
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/* entry is a referral, don't allow delete */
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rs->sr_ref = get_entry_referrals( op, e );
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Debug( LDAP_DEBUG_TRACE,
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LDAP_XSTRING(bdb_delete) ": entry is referral\n",
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0, 0, 0 );
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rs->sr_err = LDAP_REFERRAL;
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rs->sr_matched = e->e_name.bv_val;
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send_ldap_result( op, rs );
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ber_bvarray_free( rs->sr_ref );
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rs->sr_ref = NULL;
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rs->sr_matched = NULL;
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rs->sr_err = 1;
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goto done;
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}
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/* pre-read */
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if( op->o_preread ) {
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if( preread_ctrl == NULL ) {
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preread_ctrl = &ctrls[num_ctrls++];
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ctrls[num_ctrls] = NULL;
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}
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if( slap_read_controls( op, rs, e,
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&slap_pre_read_bv, preread_ctrl ) )
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{
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Debug( LDAP_DEBUG_TRACE,
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"<=- " LDAP_XSTRING(bdb_delete) ": pre-read "
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"failed!\n", 0, 0, 0 );
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goto return_results;
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}
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}
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/* nested transaction */
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rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, <2,
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bdb->bi_db_opflags );
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rs->sr_text = NULL;
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if( rs->sr_err != 0 ) {
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Debug( LDAP_DEBUG_TRACE,
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LDAP_XSTRING(bdb_delete) ": txn_begin(2) failed: "
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"%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
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rs->sr_err = LDAP_OTHER;
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rs->sr_text = "internal error";
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goto return_results;
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}
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/* Can't do it if we have kids */
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rs->sr_err = bdb_cache_children( op, lt2, e );
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if( rs->sr_err != DB_NOTFOUND ) {
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switch( rs->sr_err ) {
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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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Debug(LDAP_DEBUG_ARGS,
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"<=- " LDAP_XSTRING(bdb_delete)
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": non-leaf %s\n",
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op->o_req_dn.bv_val, 0, 0);
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rs->sr_err = LDAP_NOT_ALLOWED_ON_NONLEAF;
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rs->sr_text = "subtree delete not supported";
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break;
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default:
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Debug(LDAP_DEBUG_ARGS,
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"<=- " LDAP_XSTRING(bdb_delete)
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": has_children failed: %s (%d)\n",
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db_strerror(rs->sr_err), rs->sr_err, 0 );
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rs->sr_err = LDAP_OTHER;
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rs->sr_text = "internal error";
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}
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goto return_results;
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}
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#ifdef BDB_PSEARCH
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ldap_pvt_thread_rdwr_wlock( &bdb->bi_pslist_rwlock );
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LDAP_LIST_FOREACH( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
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rc = bdb_psearch( op, rs, ps_list, e, LDAP_PSEARCH_BY_PREDELETE );
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if ( rc == LDAP_BUSY && op->o_ps_send_wait ) {
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ldap_pvt_thread_rdwr_wunlock( &bdb->bi_pslist_rwlock );
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goto retry;
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} else if ( rc ) {
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Debug( LDAP_DEBUG_TRACE,
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LDAP_XSTRING(bdb_delete) ": persistent search "
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"failed (%d,%d)\n", rc, rs->sr_err, 0 );
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}
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}
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ldap_pvt_thread_rdwr_wunlock( &bdb->bi_pslist_rwlock );
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#endif
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/* delete from dn2id */
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rs->sr_err = bdb_dn2id_delete( op, lt2, eip, e );
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if ( rs->sr_err != 0 ) {
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Debug(LDAP_DEBUG_TRACE,
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"<=- " LDAP_XSTRING(bdb_delete) ": dn2id failed: "
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"%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
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switch( rs->sr_err ) {
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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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}
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rs->sr_text = "DN index delete failed";
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rs->sr_err = LDAP_OTHER;
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goto return_results;
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}
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/* delete from id2entry */
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rs->sr_err = bdb_id2entry_delete( op->o_bd, lt2, e );
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if ( rs->sr_err != 0 ) {
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Debug(LDAP_DEBUG_TRACE,
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"<=- " LDAP_XSTRING(bdb_delete) ": id2entry failed: "
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"%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
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switch( rs->sr_err ) {
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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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}
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rs->sr_text = "entry delete failed";
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rs->sr_err = LDAP_OTHER;
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goto return_results;
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}
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/* delete indices for old attributes */
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rs->sr_err = bdb_index_entry_del( op, lt2, e );
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if ( rs->sr_err != LDAP_SUCCESS ) {
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Debug( LDAP_DEBUG_TRACE,
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"<=- " LDAP_XSTRING(bdb_delete) ": index failed: "
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"%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
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switch( rs->sr_err ) {
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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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}
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rs->sr_text = "entry index delete failed";
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rs->sr_err = LDAP_OTHER;
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goto return_results;
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}
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if ( pdn.bv_len != 0 ) {
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parent_is_glue = is_entry_glue(p);
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rs->sr_err = bdb_cache_children( op, lt2, p );
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if ( rs->sr_err != DB_NOTFOUND ) {
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switch( rs->sr_err ) {
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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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break;
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default:
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Debug(LDAP_DEBUG_ARGS,
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"<=- " LDAP_XSTRING(bdb_delete)
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": has_children failed: %s (%d)\n",
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db_strerror(rs->sr_err), rs->sr_err, 0 );
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rs->sr_err = LDAP_OTHER;
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rs->sr_text = "internal error";
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goto return_results;
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}
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parent_is_leaf = 1;
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}
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bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p);
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p = NULL;
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}
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if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
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rs->sr_err = LDAP_OTHER;
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rs->sr_text = "txn_commit(2) failed";
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goto return_results;
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}
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eid = e->e_id;
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#if 0 /* Do we want to reclaim deleted IDs? */
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ldap_pvt_thread_mutex_lock( &bdb->bi_lastid_mutex );
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if ( e->e_id == bdb->bi_lastid ) {
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bdb_last_id( op->o_bd, ltid );
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}
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ldap_pvt_thread_mutex_unlock( &bdb->bi_lastid_mutex );
|
|
#endif
|
|
|
|
#ifdef BDB_PSEARCH
|
|
if ( !dn_match( &ctxcsn_ndn, &op->o_req_ndn ) &&
|
|
!be_issuffix( op->o_bd, &op->o_req_ndn ) &&
|
|
LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
|
|
rc = bdb_csn_commit( op, rs, ltid, ei, &suffix_ei,
|
|
&ctxcsn_e, &ctxcsn_added, locker );
|
|
switch ( rc ) {
|
|
case BDB_CSN_ABORT :
|
|
goto return_results;
|
|
case BDB_CSN_RETRY :
|
|
goto retry;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if( op->o_noop ) {
|
|
if ( ( rs->sr_err = TXN_ABORT( ltid ) ) != 0 ) {
|
|
rs->sr_text = "txn_abort (no-op) failed";
|
|
} else {
|
|
rs->sr_err = LDAP_NO_OPERATION;
|
|
goto return_results;
|
|
}
|
|
} else {
|
|
rc = bdb_cache_delete( &bdb->bi_cache, e, bdb->bi_dbenv,
|
|
locker, &lock );
|
|
switch( rc ) {
|
|
case DB_LOCK_DEADLOCK:
|
|
case DB_LOCK_NOTGRANTED:
|
|
goto retry;
|
|
}
|
|
|
|
#ifdef BDB_PSEARCH
|
|
if ( LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
|
|
if ( ctxcsn_added ) {
|
|
bdb_cache_add( bdb, suffix_ei,
|
|
ctxcsn_e, (struct berval *)&slap_ldapsync_cn_bv, locker );
|
|
}
|
|
}
|
|
|
|
if ( rs->sr_err == LDAP_SUCCESS && !op->o_no_psearch ) {
|
|
Attribute *a;
|
|
a = attr_find( e->e_attrs, slap_schema.si_ad_entryCSN );
|
|
if ( a ) {
|
|
if( (void *) e->e_attrs != (void *) (e+1)) {
|
|
attr_delete( &e->e_attrs, slap_schema.si_ad_entryCSN );
|
|
attr_merge_normalize_one( e, slap_schema.si_ad_entryCSN,
|
|
&op->o_sync_csn, NULL );
|
|
} else {
|
|
a->a_vals[0] = op->o_sync_csn;
|
|
}
|
|
} else {
|
|
/* Hm, the entryCSN ought to exist. ??? */
|
|
}
|
|
ldap_pvt_thread_rdwr_wlock( &bdb->bi_pslist_rwlock );
|
|
LDAP_LIST_FOREACH( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
|
|
rc = bdb_psearch( op, rs, ps_list, e, LDAP_PSEARCH_BY_DELETE );
|
|
if ( rc ) {
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
LDAP_XSTRING(bdb_delete)
|
|
": persistent search failed "
|
|
"(%d,%d)\n",
|
|
rc, rs->sr_err, 0 );
|
|
}
|
|
}
|
|
ldap_pvt_thread_rdwr_wunlock( &bdb->bi_pslist_rwlock );
|
|
}
|
|
#endif
|
|
|
|
rs->sr_err = TXN_COMMIT( ltid, 0 );
|
|
}
|
|
ltid = NULL;
|
|
op->o_private = NULL;
|
|
|
|
if( rs->sr_err != 0 ) {
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
LDAP_XSTRING(bdb_delete) ": txn_%s failed: %s (%d)\n",
|
|
op->o_noop ? "abort (no-op)" : "commit",
|
|
db_strerror(rs->sr_err), rs->sr_err );
|
|
rs->sr_err = LDAP_OTHER;
|
|
rs->sr_text = "commit failed";
|
|
|
|
goto return_results;
|
|
}
|
|
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
LDAP_XSTRING(bdb_delete) ": deleted%s id=%08lx dn=\"%s\"\n",
|
|
op->o_noop ? " (no-op)" : "",
|
|
eid, op->o_req_dn.bv_val );
|
|
rs->sr_err = LDAP_SUCCESS;
|
|
rs->sr_text = NULL;
|
|
if( num_ctrls ) rs->sr_ctrls = ctrls;
|
|
|
|
return_results:
|
|
send_ldap_result( op, rs );
|
|
|
|
if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp ) {
|
|
ldap_pvt_thread_yield();
|
|
TXN_CHECKPOINT( bdb->bi_dbenv,
|
|
bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
|
|
}
|
|
|
|
if ( rs->sr_err == LDAP_SUCCESS && parent_is_glue && parent_is_leaf ) {
|
|
op->o_delete_glue_parent = 1;
|
|
}
|
|
|
|
done:
|
|
if ( p )
|
|
bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p);
|
|
|
|
/* free entry */
|
|
if( e != NULL ) {
|
|
if ( rs->sr_err == LDAP_SUCCESS ) {
|
|
/* Free the EntryInfo and the Entry */
|
|
bdb_cache_delete_cleanup( &bdb->bi_cache, BEI(e) );
|
|
} else {
|
|
bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
|
|
}
|
|
}
|
|
|
|
if( ltid != NULL ) {
|
|
TXN_ABORT( ltid );
|
|
op->o_private = NULL;
|
|
}
|
|
|
|
slap_sl_free( ctxcsn_ndn.bv_val, op->o_tmpmemctx );
|
|
|
|
if( preread_ctrl != NULL ) {
|
|
slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
|
|
slap_sl_free( *preread_ctrl, op->o_tmpmemctx );
|
|
}
|
|
return rs->sr_err;
|
|
}
|