1 files changed, 64 insertions, 0 deletions
diff --git a/include/sys/dmu_traverse.h b/include/sys/dmu_traverse.h
new file mode 100644
index 000000000..5b326cd99
--- /dev/null
+++ b/include/sys/dmu_traverse.h
@@ -0,0 +1,64 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ */
+
+#ifndef	_SYS_DMU_TRAVERSE_H
+#define	_SYS_DMU_TRAVERSE_H
+
+#include <sys/zfs_context.h>
+#include <sys/spa.h>
+#include <sys/zio.h>
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+struct dnode_phys;
+struct dsl_dataset;
+struct zilog;
+struct arc_buf;
+
+typedef int (blkptr_cb_t)(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
+    struct arc_buf *pbuf, const zbookmark_t *zb, const struct dnode_phys *dnp,
+    void *arg);
+
+#define	TRAVERSE_PRE			(1<<0)
+#define	TRAVERSE_POST			(1<<1)
+#define	TRAVERSE_PREFETCH_METADATA	(1<<2)
+#define	TRAVERSE_PREFETCH_DATA		(1<<3)
+#define	TRAVERSE_PREFETCH (TRAVERSE_PREFETCH_METADATA | TRAVERSE_PREFETCH_DATA)
+#define	TRAVERSE_HARD			(1<<4)
+
+/* Special traverse error return value to indicate skipping of children */
+#define	TRAVERSE_VISIT_NO_CHILDREN	-1
+
+int traverse_dataset(struct dsl_dataset *ds,
+    uint64_t txg_start, int flags, blkptr_cb_t func, void *arg);
+int traverse_pool(spa_t *spa,
+    uint64_t txg_start, int flags, blkptr_cb_t func, void *arg);
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* _SYS_DMU_TRAVERSE_H */