/* id2entry.c - routines to deal with the id2entry database */
/* $OpenLDAP$ */
/*
- * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
+ * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include <ac/string.h>
#include "back-bdb.h"
+#include "external.h"
-int bdb_id2entry_add(
- Backend *be,
+static int bdb_id2entry_put(
+ BackendDB *be,
DB_TXN *tid,
- Entry *e )
+ Entry *e,
+ int flag )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
DB *db = bdb->bi_id2entry->bdi_db;
DBT key, data;
- struct berval *bv;
+ struct berval bv;
int rc;
+#ifdef BDB_HIER
+ struct berval odn, ondn;
+
+ /* We only store rdns, and they go in the dn2id database. */
+ odn = e->e_name; ondn = e->e_nname;
+
+ e->e_name = slap_empty_bv;
+ e->e_nname = slap_empty_bv;
+#endif
DBTzero( &key );
key.data = (char *) &e->e_id;
key.size = sizeof(ID);
rc = entry_encode( e, &bv );
+#ifdef BDB_HIER
+ e->e_name = odn; e->e_nname = ondn;
+#endif
if( rc != LDAP_SUCCESS ) {
return -1;
}
DBTzero( &data );
- bv2DBT( bv, &data );
+ bv2DBT( &bv, &data );
- rc = db->put( db, tid, &key, &data, DB_NOOVERWRITE );
+ rc = db->put( db, tid, &key, &data, flag );
- ber_bvfree( bv );
+ free( bv.bv_val );
return rc;
}
+/*
+ * This routine adds (or updates) an entry on disk.
+ * The cache should be already be updated.
+ */
+
+
+int bdb_id2entry_add(
+ BackendDB *be,
+ DB_TXN *tid,
+ Entry *e )
+{
+ return bdb_id2entry_put(be, tid, e, DB_NOOVERWRITE);
+}
+
+int bdb_id2entry_update(
+ BackendDB *be,
+ DB_TXN *tid,
+ Entry *e )
+{
+ return bdb_id2entry_put(be, tid, e, 0);
+}
+
int bdb_id2entry(
- Backend *be,
+ BackendDB *be,
DB_TXN *tid,
ID id,
Entry **e )
DB *db = bdb->bi_id2entry->bdi_db;
DBT key, data;
struct berval bv;
- int rc;
+ int rc = 0, ret = 0;
*e = NULL;
data.flags = DB_DBT_MALLOC;
/* fetch it */
- rc = db->get( db, tid, &key, &data, 0 );
+ rc = db->get( db, tid, &key, &data, bdb->bi_db_opflags );
if( rc != 0 ) {
return rc;
rc = entry_decode( &bv, e );
- ch_free( data.data );
+ if( rc == 0 ) {
+ (*e)->e_id = id;
+ } else {
+ /* only free on error. On success, the entry was
+ * decoded in place.
+ */
+ ch_free( data.data );
+ }
+
return rc;
}
int bdb_id2entry_delete(
- Backend *be,
+ BackendDB *be,
DB_TXN *tid,
- ID id )
+ Entry *e )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
DB *db = bdb->bi_id2entry->bdi_db;
DBT key;
- struct berval *bv;
int rc;
DBTzero( &key );
- key.data = (char *) &id;
+ key.data = (char *) &e->e_id;
key.size = sizeof(ID);
+ /* delete from database */
rc = db->del( db, tid, &key, 0 );
- ber_bvfree( bv );
return rc;
}
int bdb_entry_return(
- Backend *be,
Entry *e )
{
- entry_free( e );
+ /* Our entries are allocated in two blocks; the data comes from
+ * the db itself and the Entry structure and associated pointers
+ * are allocated in entry_decode. The db data pointer is saved
+ * in e_bv. Since the Entry structure is allocated as a single
+ * block, e_attrs is always a fixed offset from e. The exception
+ * is when an entry has been modified, in which case we also need
+ * to free e_attrs.
+ */
+ if( !e->e_bv.bv_val ) { /* A regular entry, from do_add */
+ entry_free( e );
+ return 0;
+ }
+ if( (void *) e->e_attrs != (void *) (e+1)) {
+ 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 ) {
+ ch_free(e->e_name.bv_val);
+ ch_free(e->e_nname.bv_val);
+ 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
+ /* In tool mode the e_bv buffer is realloc'd, leave it alone */
+ if( !(slapMode & SLAP_TOOL_MODE) ) {
+ free( e->e_bv.bv_val );
+ }
+
+ free( e );
+
+ return 0;
+}
+
+int bdb_entry_release(
+ Operation *o,
+ Entry *e,
+ int rw )
+{
+ 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 */
+ 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 );
+ sl_free( boi, o->o_tmpmemctx );
+ o->o_private = NULL;
+ }
+ } else {
+ if (e->e_private != NULL)
+ 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;
+ EntryInfo *ei;
+ int rc;
+ const char *at_name = at->ad_cname.bv_val;
+
+ 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->o_bd, txn, ndn, &ei, 0, locker, &lock, op->o_tmpmemctx );
+ 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:
+ 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 = sl_calloc(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