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.
22 #define BTRFS_SEND_STREAM_MAGIC "btrfs-stream"
23 #define BTRFS_SEND_STREAM_VERSION 1
25 #define BTRFS_SEND_BUF_SIZE (1024 * 64)
26 #define BTRFS_SEND_READ_SIZE (1024 * 48)
39 struct btrfs_stream_header {
40 char magic[sizeof(BTRFS_SEND_STREAM_MAGIC)];
42 } __attribute__ ((__packed__));
44 struct btrfs_cmd_header {
45 /* len excluding the header */
48 /* crc including the header with zero crc field */
50 } __attribute__ ((__packed__));
52 struct btrfs_tlv_header {
54 /* len excluding the header */
56 } __attribute__ ((__packed__));
63 BTRFS_SEND_C_SNAPSHOT,
77 BTRFS_SEND_C_SET_XATTR,
78 BTRFS_SEND_C_REMOVE_XATTR,
83 BTRFS_SEND_C_TRUNCATE,
89 BTRFS_SEND_C_UPDATE_EXTENT,
92 #define BTRFS_SEND_C_MAX (__BTRFS_SEND_C_MAX - 1)
94 /* attributes in send stream */
99 BTRFS_SEND_A_CTRANSID,
112 BTRFS_SEND_A_XATTR_NAME,
113 BTRFS_SEND_A_XATTR_DATA,
116 BTRFS_SEND_A_PATH_TO,
117 BTRFS_SEND_A_PATH_LINK,
119 BTRFS_SEND_A_FILE_OFFSET,
122 BTRFS_SEND_A_CLONE_UUID,
123 BTRFS_SEND_A_CLONE_CTRANSID,
124 BTRFS_SEND_A_CLONE_PATH,
125 BTRFS_SEND_A_CLONE_OFFSET,
126 BTRFS_SEND_A_CLONE_LEN,
130 #define BTRFS_SEND_A_MAX (__BTRFS_SEND_A_MAX - 1)
133 long btrfs_ioctl_send(struct file *mnt_file, void __user *arg);
134 int write_buf(struct file *filp, const void *buf, u32 len, loff_t *off);