2 * Copyright (C) 2012 Alexander Block. All rights reserved.
3 * Copyright (C) 2012 STRATO. All rights reserved.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public
7 * License v2 as published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public
15 * License along with this program; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 021110-1307, USA.
20 #ifndef __BTRFS_SEND_H__
21 #define __BTRFS_SEND_H__
29 #define BTRFS_SEND_STREAM_MAGIC "btrfs-stream"
30 #define BTRFS_SEND_STREAM_VERSION 1
32 #define BTRFS_SEND_BUF_SIZE SZ_64K
33 #define BTRFS_SEND_READ_SIZE (1024 * 48)
46 struct btrfs_stream_header {
47 char magic[sizeof(BTRFS_SEND_STREAM_MAGIC)];
49 } __attribute__ ((__packed__));
51 struct btrfs_cmd_header {
52 /* len excluding the header */
55 /* crc including the header with zero crc field */
57 } __attribute__ ((__packed__));
59 struct btrfs_tlv_header {
61 /* len excluding the header */
63 } __attribute__ ((__packed__));
70 BTRFS_SEND_C_SNAPSHOT,
84 BTRFS_SEND_C_SET_XATTR,
85 BTRFS_SEND_C_REMOVE_XATTR,
90 BTRFS_SEND_C_TRUNCATE,
96 BTRFS_SEND_C_UPDATE_EXTENT,
99 #define BTRFS_SEND_C_MAX (__BTRFS_SEND_C_MAX - 1)
101 /* attributes in send stream */
106 BTRFS_SEND_A_CTRANSID,
119 BTRFS_SEND_A_XATTR_NAME,
120 BTRFS_SEND_A_XATTR_DATA,
123 BTRFS_SEND_A_PATH_TO,
124 BTRFS_SEND_A_PATH_LINK,
126 BTRFS_SEND_A_FILE_OFFSET,
129 BTRFS_SEND_A_CLONE_UUID,
130 BTRFS_SEND_A_CLONE_CTRANSID,
131 BTRFS_SEND_A_CLONE_PATH,
132 BTRFS_SEND_A_CLONE_OFFSET,
133 BTRFS_SEND_A_CLONE_LEN,
137 #define BTRFS_SEND_A_MAX (__BTRFS_SEND_A_MAX - 1)
140 long btrfs_ioctl_send(struct file *mnt_file, void __user *arg);