openldap/servers/slapd/back-bdb/delete.c

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/* delete.c - bdb backend delete routine */
/* $OpenLDAP$ */
2003-11-29 05:08:20 +08:00
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 2000-2003 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include "back-bdb.h"
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#include "external.h"
int
bdb_delete( Operation *op, SlapReply *rs )
{
struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
Entry *matched = NULL;
struct berval pdn = {0, NULL};
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Entry *e = NULL;
Entry *p = NULL;
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EntryInfo *ei = NULL, *eip = NULL;
int manageDSAit = get_manageDSAit( op );
AttributeDescription *children = slap_schema.si_ad_children;
AttributeDescription *entry = slap_schema.si_ad_entry;
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DB_TXN *ltid = NULL, *lt2;
struct bdb_op_info opinfo;
u_int32_t locker = 0;
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DB_LOCK lock, plock;
int noop = 0;
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int num_retries = 0;
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Operation* ps_list;
int rc;
EntryInfo *suffix_ei;
Entry *ctxcsn_e;
int ctxcsn_added = 0;
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LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
int num_ctrls = 0;
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#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ARGS, "==> bdb_delete: %s\n", op->o_req_dn.bv_val, 0, 0 );
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#else
Debug( LDAP_DEBUG_ARGS, "==> bdb_delete: %s\n",
op->o_req_dn.bv_val, 0, 0 );
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#endif
if( 0 ) {
retry: /* transaction retry */
if( e != NULL ) {
bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
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e = NULL;
}
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#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"==> bdb_delete: retrying...\n", 0, 0, 0 );
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#else
Debug( LDAP_DEBUG_TRACE, "==> bdb_delete: retrying...\n",
0, 0, 0 );
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#endif
rs->sr_err = TXN_ABORT( ltid );
ltid = NULL;
op->o_private = NULL;
op->o_do_not_cache = opinfo.boi_acl_cache;
if( rs->sr_err != 0 ) {
rs->sr_err = LDAP_OTHER;
rs->sr_text = "internal error";
goto return_results;
}
ldap_pvt_thread_yield();
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bdb_trans_backoff( ++num_retries );
}
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/* begin transaction */
rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
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bdb->bi_db_opflags );
rs->sr_text = NULL;
if( rs->sr_err != 0 ) {
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#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ERR,
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"==> bdb_delete: txn_begin failed: %s (%d)\n",
db_strerror(rs->sr_err), rs->sr_err, 0 );
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#else
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Debug( LDAP_DEBUG_TRACE,
"bdb_delete: txn_begin failed: %s (%d)\n",
db_strerror(rs->sr_err), rs->sr_err, 0 );
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#endif
rs->sr_err = LDAP_OTHER;
rs->sr_text = "internal error";
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goto return_results;
}
locker = TXN_ID ( ltid );
opinfo.boi_bdb = op->o_bd;
opinfo.boi_txn = ltid;
opinfo.boi_locker = locker;
opinfo.boi_err = 0;
opinfo.boi_acl_cache = op->o_do_not_cache;
op->o_private = &opinfo;
if ( !be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
dnParent( &op->o_req_ndn, &pdn );
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}
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/* get entry */
rs->sr_err = bdb_dn2entry( op, ltid, &op->o_req_ndn, &ei, 1,
locker, &lock );
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switch( rs->sr_err ) {
case 0:
case DB_NOTFOUND:
break;
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
case LDAP_BUSY:
rs->sr_text = "ldap server busy";
goto return_results;
default:
rs->sr_err = LDAP_OTHER;
rs->sr_text = "internal error";
goto return_results;
}
if ( rs->sr_err == 0 ) {
e = ei->bei_e;
eip = ei->bei_parent;
bdb_cache_find_id( op, ltid, eip->bei_id, &eip,
0, locker, &plock );
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} else {
matched = ei->bei_e;
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}
if ( eip ) {
p = eip->bei_e;
}
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if ( pdn.bv_len != 0 ) {
if( p == NULL || !bvmatch( &pdn, &p->e_nname )) {
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#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"<=- bdb_delete: parent does not exist\n", 0, 0, 0 );
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#else
Debug( LDAP_DEBUG_TRACE,
"<=- bdb_delete: parent does not exist\n",
0, 0, 0);
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#endif
rs->sr_err = LDAP_OTHER;
rs->sr_text = "could not locate parent of entry";
goto return_results;
}
/* check parent for "children" acl */
rs->sr_err = access_allowed( op, p,
children, NULL, ACL_WRITE, NULL );
bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p);
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p = NULL;
if ( !rs->sr_err ) {
switch( opinfo.boi_err ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
}
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#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"<=- bdb_delete: no write access to parent\n", 0, 0, 0 );
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#else
Debug( LDAP_DEBUG_TRACE,
"<=- bdb_delete: no write access to parent\n",
0, 0, 0 );
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#endif
rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
rs->sr_text = "no write access to parent";
goto return_results;
}
} else {
/* no parent, must be root to delete */
if( ! be_isroot( op->o_bd, &op->o_ndn ) ) {
if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv )
|| be_isupdate( op->o_bd, &op->o_ndn ) ) {
p = (Entry *)&slap_entry_root;
/* check parent for "children" acl */
rs->sr_err = access_allowed( op, p,
children, NULL, ACL_WRITE, NULL );
p = NULL;
if ( !rs->sr_err ) {
switch( opinfo.boi_err ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
}
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#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"<=- bdb_delete: no access to parent\n", 0, 0, 0 );
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#else
Debug( LDAP_DEBUG_TRACE,
"<=- bdb_delete: no access "
"to parent\n", 0, 0, 0 );
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#endif
rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
rs->sr_text = "no write access to parent";
goto return_results;
}
} else {
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#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"<=- bdb_delete: no parent and not root\n", 0, 0, 0 );
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#else
Debug( LDAP_DEBUG_TRACE,
"<=- bdb_delete: no parent "
"and not root\n", 0, 0, 0);
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#endif
rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
goto return_results;
}
}
}
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/* FIXME : dn2entry() should return non-glue entry */
if ( e == NULL || ( !manageDSAit && is_entry_glue( e ))) {
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#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ARGS,
"<=- bdb_delete: no such object %s\n", op->o_req_dn.bv_val, 0, 0);
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#else
Debug( LDAP_DEBUG_ARGS,
"<=- bdb_delete: no such object %s\n",
op->o_req_dn.bv_val, 0, 0);
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#endif
if ( matched != NULL ) {
rs->sr_matched = ch_strdup( matched->e_dn );
rs->sr_ref = is_entry_referral( matched )
? get_entry_referrals( op, matched )
: NULL;
bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, matched);
matched = NULL;
} else {
BerVarray deref = NULL;
if ( !LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
syncinfo_t *si;
LDAP_STAILQ_FOREACH( si, &op->o_bd->be_syncinfo, si_next ) {
struct berval tmpbv;
ber_dupbv( &tmpbv, &si->si_provideruri_bv[0] );
ber_bvarray_add( &deref, &tmpbv );
}
} else {
deref = default_referral;
}
rs->sr_ref = referral_rewrite( deref, NULL, &op->o_req_dn,
LDAP_SCOPE_DEFAULT );
}
rs->sr_err = LDAP_REFERRAL;
send_ldap_result( op, rs );
if ( rs->sr_ref != default_referral ) {
ber_bvarray_free( rs->sr_ref );
}
free( (char *)rs->sr_matched );
rs->sr_ref = NULL;
rs->sr_matched = NULL;
rs->sr_err = -1;
goto done;
}
if ( get_assert( op ) &&
( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
{
rs->sr_err = LDAP_ASSERTION_FAILED;
goto return_results;
}
rs->sr_err = access_allowed( op, e,
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entry, NULL, ACL_WRITE, NULL );
if ( !rs->sr_err ) {
switch( opinfo.boi_err ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
}
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#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"<=- bdb_delete: no write access to entry\n", 0, 0, 0 );
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#else
Debug( LDAP_DEBUG_TRACE,
"<=- bdb_delete: no write access to entry\n",
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0, 0, 0 );
#endif
rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
rs->sr_text = "no write access to entry";
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goto return_results;
}
if ( !manageDSAit && is_entry_referral( e ) ) {
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/* entry is a referral, don't allow delete */
rs->sr_ref = get_entry_referrals( op, e );
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#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"<=- bdb_delete: entry is referral\n", 0, 0, 0 );
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#else
Debug( LDAP_DEBUG_TRACE,
"bdb_delete: entry is referral\n", 0, 0, 0 );
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#endif
rs->sr_err = LDAP_REFERRAL;
rs->sr_matched = e->e_name.bv_val;
send_ldap_result( op, rs );
ber_bvarray_free( rs->sr_ref );
rs->sr_ref = NULL;
rs->sr_matched = NULL;
rs->sr_err = 1;
goto done;
}
/* pre-read */
if( op->o_preread ) {
if( slap_read_controls( op, rs, e,
&slap_pre_read_bv, &ctrls[num_ctrls] ) )
{
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"<=- bdb_delete: pre-read failed!\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"<=- bdb_delete: pre-read failed!\n", 0, 0, 0 );
#endif
goto return_results;
}
ctrls[++num_ctrls] = NULL;
}
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/* nested transaction */
rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
bdb->bi_db_opflags );
rs->sr_text = NULL;
if( rs->sr_err != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ERR,
"bdb_delete: txn_begin(2) failed: %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"bdb_delete: txn_begin(2) failed: %s (%d)\n",
db_strerror(rs->sr_err), rs->sr_err, 0 );
#endif
rs->sr_err = LDAP_OTHER;
rs->sr_text = "internal error";
goto return_results;
}
/* Can't do it if we have kids */
rs->sr_err = bdb_cache_children( op, lt2, e );
if( rs->sr_err != DB_NOTFOUND ) {
switch( rs->sr_err ) {
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case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
case 0:
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#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"<=- bdb_delete: non-leaf %s\n", op->o_req_dn.bv_val, 0, 0 );
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#else
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Debug(LDAP_DEBUG_ARGS,
"<=- bdb_delete: non-leaf %s\n",
op->o_req_dn.bv_val, 0, 0);
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#endif
rs->sr_err = LDAP_NOT_ALLOWED_ON_NONLEAF;
rs->sr_text = "subtree delete not supported";
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break;
default:
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#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ERR,
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"<=- bdb_delete: has_children failed %s (%d)\n",
db_strerror(rs->sr_err), rs->sr_err, 0 );
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#else
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Debug(LDAP_DEBUG_ARGS,
"<=- bdb_delete: has_children failed: %s (%d)\n",
db_strerror(rs->sr_err), rs->sr_err, 0 );
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#endif
rs->sr_err = LDAP_OTHER;
rs->sr_text = "internal error";
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}
goto return_results;
}
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/* delete from dn2id */
rs->sr_err = bdb_dn2id_delete( op, lt2, eip, e );
if ( rs->sr_err != 0 ) {
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#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ERR,
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"<=- bdb_delete: dn2id failed: %s (%d)\n",
db_strerror(rs->sr_err), rs->sr_err, 0 );
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#else
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Debug(LDAP_DEBUG_TRACE,
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"<=- bdb_delete: dn2id failed: %s (%d)\n",
db_strerror(rs->sr_err), rs->sr_err, 0 );
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#endif
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switch( rs->sr_err ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
}
rs->sr_text = "DN index delete failed";
rs->sr_err = LDAP_OTHER;
goto return_results;
}
/* delete from id2entry */
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rs->sr_err = bdb_id2entry_delete( op->o_bd, lt2, e );
if ( rs->sr_err != 0 ) {
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#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ERR,
"<=- bdb_delete: id2entry failed: %s (%d)\n",
db_strerror(rs->sr_err), rs->sr_err, 0 );
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#else
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Debug(LDAP_DEBUG_TRACE,
"<=- bdb_delete: id2entry failed: %s (%d)\n",
db_strerror(rs->sr_err), rs->sr_err, 0 );
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#endif
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switch( rs->sr_err ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
}
rs->sr_text = "entry delete failed";
rs->sr_err = LDAP_OTHER;
goto return_results;
}
/* delete indices for old attributes */
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rs->sr_err = bdb_index_entry_del( op, lt2, e );
if ( rs->sr_err != LDAP_SUCCESS ) {
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#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ERR,
"<=- bdb_delete: index failed: %s (%d)\n",
db_strerror(rs->sr_err), rs->sr_err, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"<=- bdb_delete: index failed: %s (%d)\n",
db_strerror(rs->sr_err), rs->sr_err, 0 );
#endif
switch( rs->sr_err ) {
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case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
}
rs->sr_text = "entry index delete failed";
rs->sr_err = LDAP_OTHER;
goto return_results;
}
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if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
rs->sr_err = LDAP_OTHER;
rs->sr_text = "txn_commit(2) failed";
goto return_results;
}
#if 0 /* Do we want to reclaim deleted IDs? */
ldap_pvt_thread_mutex_lock( &bdb->bi_lastid_mutex );
if ( e->e_id == bdb->bi_lastid ) {
bdb_last_id( op->o_bd, ltid );
}
ldap_pvt_thread_mutex_unlock( &bdb->bi_lastid_mutex );
#endif
if ( 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;
}
}
if( op->o_noop ) {
if ( ( rs->sr_err = TXN_ABORT( ltid ) ) != 0 ) {
rs->sr_text = "txn_abort (no-op) failed";
} else {
noop = 1;
rs->sr_err = LDAP_SUCCESS;
}
} else {
bdb_cache_delete( &bdb->bi_cache, e, bdb->bi_dbenv,
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locker, &lock );
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 );
}
}
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if ( rs->sr_err == LDAP_SUCCESS && !noop && !op->o_no_psearch ) {
ldap_pvt_thread_rdwr_rlock( &bdb->bi_pslist_rwlock );
LDAP_LIST_FOREACH( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
bdb_psearch( op, rs, ps_list, e, LDAP_PSEARCH_BY_DELETE );
}
ldap_pvt_thread_rdwr_runlock( &bdb->bi_pslist_rwlock );
}
rs->sr_err = TXN_COMMIT( ltid, 0 );
}
ltid = NULL;
op->o_private = NULL;
if( rs->sr_err != 0 ) {
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#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ERR,
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"bdb_delete: txn_%s failed: %s (%d)\n",
op->o_noop ? "abort (no-op)" : "commit", db_strerror(rs->sr_err), rs->sr_err );
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#else
Debug( LDAP_DEBUG_TRACE,
"bdb_delete: txn_%s failed: %s (%d)\n",
op->o_noop ? "abort (no-op)" : "commit",
db_strerror(rs->sr_err), rs->sr_err );
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#endif
rs->sr_err = LDAP_OTHER;
rs->sr_text = "commit failed";
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goto return_results;
}
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#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, RESULTS,
"bdb_delete: deleted%s id=%08lx db=\"%s\"\n",
op->o_noop ? " (no-op)" : "", e->e_id, e->e_dn );
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#else
Debug( LDAP_DEBUG_TRACE,
"bdb_delete: deleted%s id=%08lx dn=\"%s\"\n",
op->o_noop ? " (no-op)" : "",
e->e_id, e->e_dn );
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#endif
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 );
}
done:
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/* free entry */
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if( e != NULL ) {
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if ( rs->sr_err == LDAP_SUCCESS ) {
/* Free the EntryInfo and the Entry */
bdb_cache_delete_cleanup( &bdb->bi_cache, e );
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} else {
bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
}
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}
if( ltid != NULL ) {
TXN_ABORT( ltid );
op->o_private = NULL;
}
return ( ( rs->sr_err == LDAP_SUCCESS ) ? noop : rs->sr_err );
}