summaryrefslogtreecommitdiffstats
path: root/servers/slapd/back-bdb/nextid.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--servers/slapd/back-bdb/nextid.c80
1 files changed, 80 insertions, 0 deletions
diff --git a/servers/slapd/back-bdb/nextid.c b/servers/slapd/back-bdb/nextid.c
new file mode 100644
index 0000000..caad4f6
--- /dev/null
+++ b/servers/slapd/back-bdb/nextid.c
@@ -0,0 +1,80 @@
+/* init.c - initialize bdb backend */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2021 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"
+
+int bdb_next_id( BackendDB *be, ID *out )
+{
+ struct bdb_info *bdb = (struct bdb_info *) be->be_private;
+
+ ldap_pvt_thread_mutex_lock( &bdb->bi_lastid_mutex );
+ *out = ++bdb->bi_lastid;
+ ldap_pvt_thread_mutex_unlock( &bdb->bi_lastid_mutex );
+
+ return 0;
+}
+
+int bdb_last_id( BackendDB *be, DB_TXN *tid )
+{
+ struct bdb_info *bdb = (struct bdb_info *) be->be_private;
+ int rc;
+ ID id = 0;
+ unsigned char idbuf[sizeof(ID)];
+ DBT key, data;
+ DBC *cursor;
+
+ DBTzero( &key );
+ key.flags = DB_DBT_USERMEM;
+ key.data = (char *) idbuf;
+ key.ulen = sizeof( idbuf );
+
+ DBTzero( &data );
+ data.flags = DB_DBT_USERMEM | DB_DBT_PARTIAL;
+
+ /* Get a read cursor */
+ rc = bdb->bi_id2entry->bdi_db->cursor( bdb->bi_id2entry->bdi_db,
+ tid, &cursor, 0 );
+
+ if (rc == 0) {
+ rc = cursor->c_get(cursor, &key, &data, DB_LAST);
+ cursor->c_close(cursor);
+ }
+
+ switch(rc) {
+ case DB_NOTFOUND:
+ rc = 0;
+ break;
+ case 0:
+ BDB_DISK2ID( idbuf, &id );
+ break;
+
+ default:
+ Debug( LDAP_DEBUG_ANY,
+ "=> bdb_last_id: get failed: %s (%d)\n",
+ db_strerror(rc), rc, 0 );
+ goto done;
+ }
+
+ bdb->bi_lastid = id;
+
+done:
+ return rc;
+}