1 files changed, 70 insertions, 0 deletions
diff --git a/image/metadump.h b/image/metadump.h
new file mode 100644
index 00000000..b9275e95
--- /dev/null
+++ b/image/metadump.h
@@ -0,0 +1,70 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License v2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 021110-1307, USA.
+ */
+
+#ifndef __BTRFS_IMAGE_METADUMP_H__
+#define __BTRFS_IMAGE_METADUMP_H__
+
+#include "kerncompat.h"
+#include "kernel-lib/rbtree.h"
+#include "kernel-lib/list.h"
+#include "ctree.h"
+
+#define HEADER_MAGIC		0xbd5c25e27295668bULL
+#define MAX_PENDING_SIZE	(256 * 1024)
+#define BLOCK_SIZE		1024
+#define BLOCK_MASK		(BLOCK_SIZE - 1)
+
+#define ITEMS_PER_CLUSTER ((BLOCK_SIZE - sizeof(struct meta_cluster)) / \
+			   sizeof(struct meta_cluster_item))
+
+#define COMPRESS_NONE		0
+#define COMPRESS_ZLIB		1
+
+struct meta_cluster_item {
+	__le64 bytenr;
+	__le32 size;
+} __attribute__ ((__packed__));
+
+struct meta_cluster_header {
+	__le64 magic;
+	__le64 bytenr;
+	__le32 nritems;
+	u8 compress;
+} __attribute__ ((__packed__));
+
+/* cluster header + index items + buffers */
+struct meta_cluster {
+	struct meta_cluster_header header;
+	struct meta_cluster_item items[];
+} __attribute__ ((__packed__));
+
+struct fs_chunk {
+	u64 logical;
+	u64 physical;
+	/*
+	 * physical_dup only store additonal physical for BTRFS_BLOCK_GROUP_DUP
+	 * currently restore only support single and DUP
+	 * TODO: modify this structure and the function related to this
+	 * structure for support RAID*
+	 */
+	u64 physical_dup;
+	u64 bytes;
+	struct rb_node l;
+	struct rb_node p;
+	struct list_head list;
+};
+
+#endif