mirror of
https://git.openldap.org/openldap/openldap.git
synced 2024-12-21 03:10:25 +08:00
336 lines
7.0 KiB
C
336 lines
7.0 KiB
C
/* delete.c - bdb backend delete routine */
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/* $OpenLDAP$ */
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/*
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* Copyright 1998-2000 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 "back-bdb.h"
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#include "external.h"
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int
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bdb_delete(
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BackendDB *be,
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Connection *conn,
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Operation *op,
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const char *dn,
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const char *ndn
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)
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{
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struct bdb_info *bdb = (struct bdb_info *) be->be_private;
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Entry *matched;
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char *pdn = NULL;
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Entry *e, *p = NULL;
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int rc;
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const char *text;
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int manageDSAit = get_manageDSAit( op );
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AttributeDescription *children = slap_schema.si_ad_children;
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DB_TXN *ltid = NULL;
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struct bdb_op_info opinfo;
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Debug( LDAP_DEBUG_ARGS, "==> bdb_delete: %s\n", dn, 0, 0 );
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if( 0 ) {
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retry: /* transaction retry */
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Debug( LDAP_DEBUG_TRACE, "==> bdb_delete: retrying...\n", 0, 0, 0 );
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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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text = "internal error";
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goto return_results;
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}
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}
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if( bdb->bi_txn ) {
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/* begin transaction */
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rc = txn_begin( bdb->bi_dbenv, NULL, <id,
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bdb->bi_db_opflags );
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text = NULL;
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if( rc != 0 ) {
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Debug( LDAP_DEBUG_TRACE,
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"bdb_delete: txn_begin failed: %s (%d)\n",
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db_strerror(rc), rc, 0 );
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rc = LDAP_OTHER;
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text = "internal error";
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goto return_results;
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}
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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_err = 0;
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op->o_private = &opinfo;
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/* get entry for read/modify/write */
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rc = bdb_dn2entry( be, ltid, ndn, &e, &matched, DB_RMW );
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switch( rc ) {
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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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default:
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rc = LDAP_OTHER;
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text = "internal error";
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goto return_results;
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}
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if ( e == NULL ) {
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char *matched_dn = NULL;
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struct berval **refs;
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Debug( LDAP_DEBUG_ARGS,
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"<=- bdb_delete: no such object %s\n",
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dn, 0, 0);
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if ( matched != NULL ) {
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matched_dn = ch_strdup( matched->e_dn );
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refs = is_entry_referral( matched )
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? get_entry_referrals( be, conn, op, matched,
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dn, LDAP_SCOPE_DEFAULT )
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: NULL;
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bdb_entry_return( be, matched );
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matched = NULL;
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} else {
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refs = referral_rewrite( default_referral,
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NULL, dn, LDAP_SCOPE_DEFAULT );
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}
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send_ldap_result( conn, op, LDAP_REFERRAL,
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matched_dn, NULL, refs, NULL );
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ber_bvecfree( refs );
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free( matched_dn );
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rc = -1;
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goto done;
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}
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pdn = dn_parent( be, ndn );
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if( pdn != NULL && *pdn != '\0' ) {
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/* get parent */
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rc = bdb_dn2entry( be, ltid, pdn, &p, NULL, 0 );
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switch( rc ) {
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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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default:
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rc = LDAP_OTHER;
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text = "internal error";
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goto return_results;
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}
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if( p == NULL) {
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Debug( LDAP_DEBUG_TRACE,
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"<=- bdb_delete: parent does not exist\n",
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0, 0, 0);
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rc = LDAP_OTHER;
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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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rc = access_allowed( be, conn, op, p,
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children, NULL, ACL_WRITE );
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bdb_entry_return( be, p );
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p = NULL;
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if ( !rc ) {
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Debug( LDAP_DEBUG_TRACE,
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"<=- bdb_delete: no access to parent\n",
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0, 0, 0 );
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rc = LDAP_INSUFFICIENT_ACCESS;
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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( be, op->o_ndn ) ) {
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if ( be_issuffix( be, "" ) || be_isupdate( be, op->o_ndn ) ) {
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p = (Entry *)&slap_entry_root;
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/* check parent for "children" acl */
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rc = access_allowed( be, conn, op, p,
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children, NULL, ACL_WRITE );
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p = NULL;
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if ( !rc ) {
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Debug( LDAP_DEBUG_TRACE,
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"<=- bdb_delete: no access "
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"to parent\n", 0, 0, 0 );
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rc = LDAP_INSUFFICIENT_ACCESS;
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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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"<=- bdb_delete: no parent "
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"and not root\n", 0, 0, 0);
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rc = 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 ( !manageDSAit && is_entry_referral( e ) ) {
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/* parent is a referral, don't allow add */
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/* parent is an alias, don't allow add */
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struct berval **refs = get_entry_referrals( be,
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conn, op, e, dn, LDAP_SCOPE_DEFAULT );
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Debug( LDAP_DEBUG_TRACE,
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"bdb_delete: entry is referral\n",
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0, 0, 0 );
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send_ldap_result( conn, op, LDAP_REFERRAL,
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e->e_dn, NULL, refs, NULL );
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ber_bvecfree( refs );
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rc = 1;
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goto done;
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}
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rc = bdb_dn2id_children( be, ltid, e->e_ndn );
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if( rc != DB_NOTFOUND ) {
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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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Debug(LDAP_DEBUG_ARGS,
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"<=- bdb_delete: non-leaf %s\n",
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dn, 0, 0);
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rc = LDAP_NOT_ALLOWED_ON_NONLEAF;
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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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"<=- bdb_delete: has_children failed: %s (%d)\n",
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db_strerror(rc), rc, 0 );
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rc = LDAP_OTHER;
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text = "internal error";
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}
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goto return_results;
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}
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/* delete from dn2id */
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rc = bdb_dn2id_delete( be, ltid, pdn, e );
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if ( rc != 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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default:
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rc = LDAP_OTHER;
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}
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Debug(LDAP_DEBUG_ARGS,
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"<=- bdb_delete: dn2id failed: %s (%d)\n",
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db_strerror(rc), rc, 0 );
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text = "DN index delete failed";
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goto return_results;
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}
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/* delete indices for old attributes */
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rc = bdb_index_entry_del( be, ltid, e, e->e_attrs );
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if ( rc != LDAP_SUCCESS ) {
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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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default:
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rc = LDAP_OTHER;
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}
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Debug( LDAP_DEBUG_ANY, "entry index delete failed!\n",
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0, 0, 0 );
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text = "entry index delete failed";
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goto return_results;
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}
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/* delete from id2entry */
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rc = bdb_id2entry_delete( be, ltid, e->e_id );
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if ( rc != 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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default:
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rc = LDAP_OTHER;
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}
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Debug(LDAP_DEBUG_ARGS,
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"<=- bdb_delete: id2entry failed: %s (%d)\n",
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db_strerror(rc), rc, 0 );
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text = "entry delete failed";
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goto return_results;
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}
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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( be, ltid );
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}
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ldap_pvt_thread_mutex_unlock( &bdb->bi_lastid_mutex );
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#endif
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if( bdb->bi_txn ) {
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rc = txn_commit( ltid, 0 );
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}
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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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Debug( LDAP_DEBUG_TRACE,
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"bdb_delete: txn_commit failed: %s (%d)\n",
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db_strerror(rc), rc, 0 );
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rc = LDAP_OTHER;
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text = "commit failed";
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} else {
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Debug( LDAP_DEBUG_TRACE,
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"bdb_delete: deleted id=%08lx dn=\"%s\"\n",
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e->e_id, e->e_dn, 0 );
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rc = LDAP_SUCCESS;
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text = NULL;
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}
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return_results:
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send_ldap_result( conn, op, LDAP_SUCCESS,
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NULL, text, NULL, NULL );
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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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done:
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/* free entry */
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if( e != NULL ) {
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bdb_entry_return( be, e );
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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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