1 files changed, 108 insertions, 0 deletions
diff --git a/send-utils.h b/send-utils.h
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index 00000000..677a1db2
--- /dev/null
+++ b/send-utils.h
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2012 Alexander Block.  All rights reserved.
+ *
+ * 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_SEND_UTILS_H__
+#define __BTRFS_SEND_UTILS_H__
+
+#if BTRFS_FLAT_INCLUDES
+#include "kerncompat.h"
+#include "ctree.h"
+#include "rbtree.h"
+#else
+#include <btrfs/kerncompat.h>
+#include <btrfs/ctree.h>
+#include <btrfs/rbtree.h>
+#endif /* BTRFS_FLAT_INCLUDES */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Compatibility code for kernels < 3.12; the UUID tree is not available there
+ * and we have to do the slow search. This should be deprecated someday.
+ */
+#define BTRFS_COMPAT_SEND_NO_UUID_TREE 1
+
+enum subvol_search_type {
+	subvol_search_by_root_id,
+	subvol_search_by_uuid,
+	subvol_search_by_received_uuid,
+	subvol_search_by_path,
+};
+
+struct subvol_info {
+#ifdef BTRFS_COMPAT_SEND_NO_UUID_TREE
+	struct rb_node rb_root_id_node;
+	struct rb_node rb_local_node;
+	struct rb_node rb_received_node;
+	struct rb_node rb_path_node;
+#endif
+
+	u64 root_id;
+	u8 uuid[BTRFS_UUID_SIZE];
+	u8 parent_uuid[BTRFS_UUID_SIZE];
+	u8 received_uuid[BTRFS_UUID_SIZE];
+	u64 ctransid;
+	u64 otransid;
+	u64 stransid;
+	u64 rtransid;
+
+	char *path;
+};
+
+struct subvol_uuid_search {
+	int mnt_fd;
+#ifdef BTRFS_COMPAT_SEND_NO_UUID_TREE
+	int uuid_tree_existed;
+
+	struct rb_root root_id_subvols;
+	struct rb_root local_subvols;
+	struct rb_root received_subvols;
+	struct rb_root path_subvols;
+#endif
+};
+
+int subvol_uuid_search_init(int mnt_fd, struct subvol_uuid_search *s);
+void subvol_uuid_search_finit(struct subvol_uuid_search *s);
+struct subvol_info *subvol_uuid_search(struct subvol_uuid_search *s,
+				       u64 root_id, const u8 *uuid, u64 transid,
+				       const char *path,
+				       enum subvol_search_type type);
+void subvol_uuid_search_add(struct subvol_uuid_search *s,
+			    struct subvol_info *si);
+
+int btrfs_subvolid_resolve(int fd, char *path, size_t path_len, u64 subvol_id);
+
+/*
+ * DEPRECATED: the functions path_cat and path_cat3 are unsafe and should not
+ * be used, use the _out variants and always check the return code.
+ */
+__attribute__((deprecated))
+char *path_cat(const char *p1, const char *p2);
+__attribute__((deprecated))
+char *path_cat3(const char *p1, const char *p2, const char *p3);
+
+int path_cat_out(char *out, const char *p1, const char *p2);
+int path_cat3_out(char *out, const char *p1, const char *p2, const char *p3);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif