/* id2entry.c - routines to deal with the id2entry database */
/* $OpenLDAP$ */
-/*
- * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2004 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 <ac/string.h>
#include "back-bdb.h"
+#include "external.h"
-int bdb_id2entry_put(
+static int bdb_id2entry_put(
BackendDB *be,
DB_TXN *tid,
Entry *e,
struct berval bv;
int rc;
#ifdef BDB_HIER
- char *odn, *ondn;
+ struct berval odn, ondn;
- /* We only store rdns, and they go in the id2parent database. */
+ /* We only store rdns, and they go in the dn2id database. */
- odn = e->e_dn; ondn = e->e_ndn;
+ odn = e->e_name; ondn = e->e_nname;
- e->e_dn = ""; e->e_ndn = "";
+ e->e_name = slap_empty_bv;
+ e->e_nname = slap_empty_bv;
#endif
DBTzero( &key );
key.data = (char *) &e->e_id;
rc = entry_encode( e, &bv );
#ifdef BDB_HIER
- e->e_dn = odn; e->e_ndn = ondn;
+ e->e_name = odn; e->e_nname = ondn;
#endif
if( rc != LDAP_SUCCESS ) {
return -1;
return bdb_id2entry_put(be, tid, e, 0);
}
-int bdb_id2entry_rw(
+int bdb_id2entry(
BackendDB *be,
DB_TXN *tid,
ID id,
- Entry **e,
- int rw,
- u_int32_t locker,
- DB_LOCK *lock )
+ Entry **e )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
DB *db = bdb->bi_id2entry->bdi_db;
DBTzero( &data );
data.flags = DB_DBT_MALLOC;
- if ((*e = bdb_cache_find_entry_id(bdb->bi_dbenv, &bdb->bi_cache, id, rw, locker, lock)) != NULL) {
- return 0;
- }
-
/* fetch it */
- rc = db->get( db, tid, &key, &data, bdb->bi_db_opflags | ( rw ? DB_RMW : 0 ));
+ rc = db->get( db, tid, &key, &data, bdb->bi_db_opflags );
if( rc != 0 ) {
return rc;
ch_free( data.data );
}
- if ( rc == 0 ) {
-#ifdef BDB_HIER
- bdb_fix_dn(be, id, *e);
-#endif
- ret = bdb_cache_add_entry_rw( bdb->bi_dbenv,
- &bdb->bi_cache, *e, rw, locker, lock);
- while ( ret == 1 || ret == -1 ) {
- Entry *ee;
- int add_loop_cnt = 0;
- if ( (*e)->e_private != NULL ) {
- free ((*e)->e_private);
- }
- (*e)->e_private = NULL;
- if ( (ee = bdb_cache_find_entry_id
- (bdb->bi_dbenv, &bdb->bi_cache, id, rw, locker, lock) ) != NULL) {
- bdb_entry_return ( *e );
- *e = ee;
- return 0;
- }
- if ( ++add_loop_cnt == BDB_MAX_ADD_LOOP ) {
- bdb_entry_return ( *e );
- *e = NULL;
- return LDAP_BUSY;
- }
- }
- if ( ret != 0 ) {
- if ( (*e)->e_private != NULL )
- free ( (*e)->e_private );
- bdb_entry_return( *e );
- *e = NULL;
- ch_free( data.data );
- }
- rc = ret;
- }
-
- if (rc == 0) {
- bdb_cache_entry_commit(*e);
- }
-
return rc;
}
DBT key;
int rc;
- bdb_cache_delete_entry(&bdb->bi_cache, e);
-
DBTzero( &key );
key.data = (char *) &e->e_id;
key.size = sizeof(ID);
attrs_free( e->e_attrs );
}
-#ifndef BDB_HIER
/* See if the DNs were changed by modrdn */
if( e->e_nname.bv_val < e->e_bv.bv_val || e->e_nname.bv_val >
e->e_bv.bv_val + e->e_bv.bv_len ) {
e->e_name.bv_val = NULL;
e->e_nname.bv_val = NULL;
}
-#else
- /* We had to construct the dn and ndn as well, in a single block */
- if( e->e_name.bv_val ) {
- free( e->e_name.bv_val );
- }
-#endif
+#ifndef BDB_HIER
/* In tool mode the e_bv buffer is realloc'd, leave it alone */
if( !(slapMode & SLAP_TOOL_MODE) ) {
free( e->e_bv.bv_val );
}
-
+#else
+ free( e->e_bv.bv_val );
+#endif
free( e );
return 0;
}
int bdb_entry_release(
- BackendDB *be,
- Connection *c,
Operation *o,
Entry *e,
int rw )
{
- struct bdb_info *bdb = (struct bdb_info *) be->be_private;
+ struct bdb_info *bdb = (struct bdb_info *) o->o_bd->be_private;
+ struct bdb_op_info *boi = NULL;
/* slapMode : SLAP_SERVER_MODE, SLAP_TOOL_MODE,
SLAP_TRUNCATE_MODE, SLAP_UNDEFINED_MODE */
if ( slapMode == SLAP_SERVER_MODE ) {
/* free entry and reader or writer lock */
- bdb_unlocked_cache_return_entry_rw( &bdb->bi_cache, e, rw );
+ if ( o ) {
+ boi = (struct bdb_op_info *)o->o_private;
+ }
+ /* lock is freed with txn */
+ if ( !boi || boi->boi_txn ) {
+ bdb_unlocked_cache_return_entry_rw( &bdb->bi_cache, e, rw );
+ } else {
+ bdb_cache_return_entry_rw( bdb->bi_dbenv, &bdb->bi_cache, e, rw, &boi->boi_lock );
+ o->o_tmpfree( boi, o->o_tmpmemctx );
+ o->o_private = NULL;
+ }
} else {
if (e->e_private != NULL)
- free (e->e_private);
+ BEI(e)->bei_e = NULL;
e->e_private = NULL;
bdb_entry_return ( e );
}
return 0;
}
+
+/* return LDAP_SUCCESS IFF we can retrieve the specified entry.
+ */
+int bdb_entry_get(
+ Operation *op,
+ struct berval *ndn,
+ ObjectClass *oc,
+ AttributeDescription *at,
+ int rw,
+ Entry **ent )
+{
+ struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
+ struct bdb_op_info *boi = NULL;
+ DB_TXN *txn = NULL;
+ Entry *e = NULL;
+ EntryInfo *ei;
+ int rc;
+ const char *at_name = at ? at->ad_cname.bv_val : "(null)";
+
+ u_int32_t locker = 0;
+ DB_LOCK lock;
+ int free_lock_id = 0;
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_BDB, ARGS,
+ "bdb_entry_get: ndn: \"%s\"\n", ndn->bv_val, 0, 0 );
+ LDAP_LOG( BACK_BDB, ARGS,
+ "bdb_entry_get: oc: \"%s\", at: \"%s\"\n",
+ oc ? oc->soc_cname.bv_val : "(null)", at_name, 0);
+#else
+ Debug( LDAP_DEBUG_ARGS,
+ "=> bdb_entry_get: ndn: \"%s\"\n", ndn->bv_val, 0, 0 );
+ Debug( LDAP_DEBUG_ARGS,
+ "=> bdb_entry_get: oc: \"%s\", at: \"%s\"\n",
+ oc ? oc->soc_cname.bv_val : "(null)", at_name, 0);
+#endif
+
+ if( op ) boi = (struct bdb_op_info *) op->o_private;
+ if( boi != NULL && op->o_bd == boi->boi_bdb ) {
+ txn = boi->boi_txn;
+ locker = boi->boi_locker;
+ }
+
+ if ( txn != NULL ) {
+ locker = TXN_ID ( txn );
+ } else if ( !locker ) {
+ rc = LOCK_ID ( bdb->bi_dbenv, &locker );
+ free_lock_id = 1;
+ switch(rc) {
+ case 0:
+ break;
+ default:
+ return LDAP_OTHER;
+ }
+ }
+
+dn2entry_retry:
+ /* can we find entry */
+ rc = bdb_dn2entry( op, txn, ndn, &ei, 0, locker, &lock );
+ switch( rc ) {
+ case DB_NOTFOUND:
+ case 0:
+ break;
+ case DB_LOCK_DEADLOCK:
+ case DB_LOCK_NOTGRANTED:
+ /* the txn must abort and retry */
+ if ( txn ) {
+ boi->boi_err = rc;
+ return LDAP_BUSY;
+ }
+ ldap_pvt_thread_yield();
+ goto dn2entry_retry;
+ default:
+ if ( boi ) boi->boi_err = rc;
+ if ( free_lock_id ) {
+ LOCK_ID_FREE( bdb->bi_dbenv, locker );
+ }
+ return (rc != LDAP_BUSY) ? LDAP_OTHER : LDAP_BUSY;
+ }
+ if (ei) e = ei->bei_e;
+ if (e == NULL) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_BDB, INFO,
+ "bdb_entry_get: cannot find entry (%s)\n",
+ ndn->bv_val, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "=> bdb_entry_get: cannot find entry: \"%s\"\n",
+ ndn->bv_val, 0, 0 );
+#endif
+ if ( free_lock_id ) {
+ LOCK_ID_FREE( bdb->bi_dbenv, locker );
+ }
+ return LDAP_NO_SUCH_OBJECT;
+ }
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_BDB, DETAIL1, "bdb_entry_get: found entry (%s)\n",
+ ndn->bv_val, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "=> bdb_entry_get: found entry: \"%s\"\n",
+ ndn->bv_val, 0, 0 );
+#endif
+
+#ifdef BDB_ALIASES
+ /* find attribute values */
+ if( is_entry_alias( e ) ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_BDB, INFO,
+ "bdb_entry_get: entry (%s) is an alias\n", e->e_name.bv_val, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "<= bdb_entry_get: entry is an alias\n", 0, 0, 0 );
+#endif
+ rc = LDAP_ALIAS_PROBLEM;
+ goto return_results;
+ }
+#endif
+
+ if( is_entry_referral( e ) ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_BDB, INFO,
+ "bdb_entry_get: entry (%s) is a referral.\n", e->e_name.bv_val, 0, 0);
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "<= bdb_entry_get: entry is a referral\n", 0, 0, 0 );
+#endif
+ rc = LDAP_REFERRAL;
+ goto return_results;
+ }
+
+ if ( oc && !is_entry_objectclass( e, oc, 0 )) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_BDB, INFO,
+ "bdb_entry_get: failed to find objectClass.\n", 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "<= bdb_entry_get: failed to find objectClass\n",
+ 0, 0, 0 );
+#endif
+ rc = LDAP_NO_SUCH_ATTRIBUTE;
+ goto return_results;
+ }
+
+return_results:
+ if( rc != LDAP_SUCCESS ) {
+ /* free entry */
+ bdb_cache_return_entry_rw(bdb->bi_dbenv, &bdb->bi_cache, e, rw, &lock);
+ } else {
+ *ent = e;
+ /* big drag. we need a place to store a read lock so we can
+ * release it later??
+ */
+ if ( op && !boi ) {
+ boi = op->o_tmpcalloc(1,sizeof(struct bdb_op_info),op->o_tmpmemctx);
+ boi->boi_lock = lock;
+ op->o_private = boi;
+ }
+ }
+
+ if ( free_lock_id ) {
+ LOCK_ID_FREE( bdb->bi_dbenv, locker );
+ }
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_BDB, ENTRY, "bdb_entry_get: rc=%d\n", rc, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "bdb_entry_get: rc=%d\n",
+ rc, 0, 0 );
+#endif
+ return(rc);
+}
projects / openldap / blobdiff