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openldap/servers/slapd/back-bdb/delete.c
Kurt Zeilenga 6939c53170 Happy new year
2003-01-03 20:20:47 +00:00

523 lines
11 KiB
C
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/* delete.c - bdb backend delete routine */
/* $OpenLDAP$ */
/*
* Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include "back-bdb.h"
#include "external.h"
int
bdb_delete(
BackendDB *be,
Connection *conn,
Operation *op,
struct berval *dn,
struct berval *ndn
)
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
Entry *matched;
struct berval pdn = {0, NULL};
Entry *e = NULL;
Entry *p = NULL;
int rc;
const char *text;
int manageDSAit = get_manageDSAit( op );
AttributeDescription *children = slap_schema.si_ad_children;
AttributeDescription *entry = slap_schema.si_ad_entry;
DB_TXN *ltid = NULL;
struct bdb_op_info opinfo;
u_int32_t locker;
DB_LOCK lock;
#if 0
u_int32_t lockid;
DB_LOCK lock;
#endif
int noop = 0;
#ifdef LDAP_CLIENT_UPDATE
Operation* ps_list;
#endif
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ARGS, "==> bdb_delete: %s\n", dn->bv_val, 0, 0 );
#else
Debug( LDAP_DEBUG_ARGS, "==> bdb_delete: %s\n",
dn->bv_val, 0, 0 );
#endif
if( 0 ) {
retry: /* transaction retry */
if( e != NULL ) {
bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
}
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"==> bdb_delete: retrying...\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "==> bdb_delete: retrying...\n",
0, 0, 0 );
#endif
rc = TXN_ABORT( ltid );
ltid = NULL;
op->o_private = NULL;
if( rc != 0 ) {
rc = LDAP_OTHER;
text = "internal error";
goto return_results;
}
ldap_pvt_thread_yield();
}
/* begin transaction */
rc = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
bdb->bi_db_opflags );
text = NULL;
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ERR,
"==> bdb_delete: txn_begin failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"bdb_delete: txn_begin failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#endif
rc = LDAP_OTHER;
text = "internal error";
goto return_results;
}
locker = TXN_ID ( ltid );
#if 0
lockid = TXN_ID( ltid );
#endif
opinfo.boi_bdb = be;
opinfo.boi_txn = ltid;
opinfo.boi_err = 0;
op->o_private = &opinfo;
if ( !be_issuffix( be, ndn ) ) {
dnParent( ndn, &pdn );
}
if( pdn.bv_len != 0 ) {
#if 0
if ( ltid ) {
DBT obj;
obj.data = pdn.bv_val-1;
obj.size = pdn.bv_len+1;
rc = LOCK_GET( bdb->bi_dbenv, lockid, 0, &obj,
DB_LOCK_WRITE, &lock);
}
#endif
/* get parent */
rc = bdb_dn2entry_r( be, ltid, &pdn, &p, NULL, 0, locker, &lock );
switch( rc ) {
case 0:
case DB_NOTFOUND:
break;
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
case LDAP_BUSY:
text = "ldap server busy";
goto return_results;
default:
rc = LDAP_OTHER;
text = "internal error";
goto return_results;
}
if( p == NULL) {
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"<=- bdb_delete: parent does not exist\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"<=- bdb_delete: parent does not exist\n",
0, 0, 0);
#endif
rc = LDAP_OTHER;
text = "could not locate parent of entry";
goto return_results;
}
/* check parent for "children" acl */
rc = access_allowed( be, conn, op, p,
children, NULL, ACL_WRITE, NULL );
bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p);
p = NULL;
switch( opinfo.boi_err ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
}
if ( !rc ) {
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"<=- bdb_delete: no write access to parent\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"<=- bdb_delete: no write access to parent\n",
0, 0, 0 );
#endif
rc = LDAP_INSUFFICIENT_ACCESS;
text = "no write access to parent";
goto return_results;
}
} else {
/* no parent, must be root to delete */
if( ! be_isroot( be, &op->o_ndn ) ) {
if ( be_issuffix( be, (struct berval *)&slap_empty_bv )
|| be_isupdate( be, &op->o_ndn ) ) {
p = (Entry *)&slap_entry_root;
/* check parent for "children" acl */
rc = access_allowed( be, conn, op, p,
children, NULL, ACL_WRITE, NULL );
p = NULL;
switch( opinfo.boi_err ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
}
if ( !rc ) {
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"<=- bdb_delete: no access to parent\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"<=- bdb_delete: no access "
"to parent\n", 0, 0, 0 );
#endif
rc = LDAP_INSUFFICIENT_ACCESS;
text = "no write access to parent";
goto return_results;
}
} else {
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"<=- bdb_delete: no parent and not root\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"<=- bdb_delete: no parent "
"and not root\n", 0, 0, 0);
#endif
rc = LDAP_INSUFFICIENT_ACCESS;
goto return_results;
}
}
#if 0
if ( ltid ) {
DBT obj;
obj.data = ",";
obj.size = 1;
rc = LOCK_GET( bdb->bi_dbenv, lockid, 0, &obj,
DB_LOCK_WRITE, &lock);
}
#endif
}
/* get entry for read/modify/write */
rc = bdb_dn2entry_w( be, ltid, ndn, &e, &matched, DB_RMW, locker, &lock );
switch( rc ) {
case 0:
case DB_NOTFOUND:
break;
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
case LDAP_BUSY:
text = "ldap server busy";
goto return_results;
default:
rc = LDAP_OTHER;
text = "internal error";
goto return_results;
}
if ( e == NULL ) {
char *matched_dn = NULL;
BerVarray refs;
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ARGS,
"<=- bdb_delete: no such object %s\n", dn->bv_val, 0, 0);
#else
Debug( LDAP_DEBUG_ARGS,
"<=- bdb_delete: no such object %s\n",
dn->bv_val, 0, 0);
#endif
if ( matched != NULL ) {
matched_dn = ch_strdup( matched->e_dn );
refs = is_entry_referral( matched )
? get_entry_referrals( be, conn, op, matched )
: NULL;
bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, matched);
matched = NULL;
} else {
refs = referral_rewrite( default_referral,
NULL, dn, LDAP_SCOPE_DEFAULT );
}
send_ldap_result( conn, op, LDAP_REFERRAL,
matched_dn, NULL, refs, NULL );
ber_bvarray_free( refs );
free( matched_dn );
rc = -1;
goto done;
}
rc = access_allowed( be, conn, op, e,
entry, NULL, ACL_WRITE, NULL );
switch( opinfo.boi_err ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
}
if ( !rc ) {
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"<=- bdb_delete: no write access to entry\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"<=- bdb_delete: no write access to entry\n",
0, 0, 0 );
#endif
rc = LDAP_INSUFFICIENT_ACCESS;
text = "no write access to entry";
goto return_results;
}
if ( !manageDSAit && is_entry_referral( e ) ) {
/* entry is a referral, don't allow delete */
BerVarray refs = get_entry_referrals( be,
conn, op, e );
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"<=- bdb_delete: entry is referral\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"bdb_delete: entry is referral\n",
0, 0, 0 );
#endif
send_ldap_result( conn, op, LDAP_REFERRAL,
e->e_dn, NULL, refs, NULL );
ber_bvarray_free( refs );
rc = 1;
goto done;
}
rc = bdb_dn2id_children( be, ltid, &e->e_nname, 0 );
if( rc != DB_NOTFOUND ) {
switch( rc ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
case 0:
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, DETAIL1,
"<=- bdb_delete: non-leaf %s\n", dn->bv_val, 0, 0 );
#else
Debug(LDAP_DEBUG_ARGS,
"<=- bdb_delete: non-leaf %s\n",
dn->bv_val, 0, 0);
#endif
rc = LDAP_NOT_ALLOWED_ON_NONLEAF;
text = "subtree delete not supported";
break;
default:
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ERR,
"<=- bdb_delete: has_children failed %s (%d)\n",
db_strerror(rc), rc, 0 );
#else
Debug(LDAP_DEBUG_ARGS,
"<=- bdb_delete: has_children failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#endif
rc = LDAP_OTHER;
text = "internal error";
}
goto return_results;
}
/* delete from dn2id */
rc = bdb_dn2id_delete( be, ltid, pdn.bv_val, e );
if ( rc != 0 ) {
switch( rc ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
default:
rc = LDAP_OTHER;
}
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ERR,
"<=- bdb_delete: dn2id failed %s (%d)\n", db_strerror(rc), rc, 0 );
#else
Debug(LDAP_DEBUG_ARGS,
"<=- bdb_delete: dn2id failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#endif
text = "DN index delete failed";
goto return_results;
}
/* delete from id2entry */
rc = bdb_id2entry_delete( be, ltid, e );
if ( rc != 0 ) {
switch( rc ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
default:
rc = LDAP_OTHER;
}
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ERR,
"<=- bdb_delete: id2entry failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#else
Debug(LDAP_DEBUG_ARGS,
"<=- bdb_delete: id2entry failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#endif
text = "entry delete failed";
goto return_results;
}
/* delete indices for old attributes */
rc = bdb_index_entry_del( be, ltid, e, e->e_attrs );
if ( rc != LDAP_SUCCESS ) {
switch( rc ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
default:
rc = LDAP_OTHER;
}
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ERR,
"<=- bdb_delete: entry index delete failed!\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "entry index delete failed!\n",
0, 0, 0 );
#endif
text = "entry index delete 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( be, ltid );
}
ldap_pvt_thread_mutex_unlock( &bdb->bi_lastid_mutex );
#endif
if( op->o_noop ) {
if ( ( rc = TXN_ABORT( ltid ) ) != 0 ) {
text = "txn_abort (no-op) failed";
} else {
noop = 1;
rc = LDAP_SUCCESS;
}
} else {
rc = TXN_COMMIT( ltid, 0 );
}
ltid = NULL;
op->o_private = NULL;
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ERR,
"bdb_delete: txn_%s failed: %s (%d)\n",
op->o_noop ? "abort (no-op)" : "commit", db_strerror(rc), rc );
#else
Debug( LDAP_DEBUG_TRACE,
"bdb_delete: txn_%s failed: %s (%d)\n",
op->o_noop ? "abort (no-op)" : "commit",
db_strerror(rc), rc );
#endif
rc = LDAP_OTHER;
text = "commit failed";
} else {
#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 );
#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 );
#endif
rc = LDAP_SUCCESS;
text = NULL;
}
return_results:
send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
#ifdef LDAP_CLIENT_UPDATE
if ( rc == LDAP_SUCCESS && !noop ) {
LDAP_LIST_FOREACH( ps_list, &bdb->psearch_list, link ) {
bdb_psearch( be, conn, op, ps_list, e, LCUP_PSEARCH_BY_DELETE );
}
}
#endif /* LDAP_CLIENT_UPDATE */
if(rc == 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:
/* free entry */
if( e != NULL ) {
bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
}
if( ltid != NULL ) {
TXN_ABORT( ltid );
op->o_private = NULL;
}
return ( ( rc == LDAP_SUCCESS ) ? noop : rc );
}
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