1/*
2 * Copyright (C) 2012 Alexander Block.  All rights reserved.
3 * Copyright (C) 2012 STRATO.  All rights reserved.
4 *
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.
8 *
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.
13 *
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.
18 */
19
20#include "ctree.h"
21
22#define BTRFS_SEND_STREAM_MAGIC "btrfs-stream"
23#define BTRFS_SEND_STREAM_VERSION 1
24
25#define BTRFS_SEND_BUF_SIZE (1024 * 64)
26#define BTRFS_SEND_READ_SIZE (1024 * 48)
27
28enum btrfs_tlv_type {
29	BTRFS_TLV_U8,
30	BTRFS_TLV_U16,
31	BTRFS_TLV_U32,
32	BTRFS_TLV_U64,
33	BTRFS_TLV_BINARY,
34	BTRFS_TLV_STRING,
35	BTRFS_TLV_UUID,
36	BTRFS_TLV_TIMESPEC,
37};
38
39struct btrfs_stream_header {
40	char magic[sizeof(BTRFS_SEND_STREAM_MAGIC)];
41	__le32 version;
42} __attribute__ ((__packed__));
43
44struct btrfs_cmd_header {
45	/* len excluding the header */
46	__le32 len;
47	__le16 cmd;
48	/* crc including the header with zero crc field */
49	__le32 crc;
50} __attribute__ ((__packed__));
51
52struct btrfs_tlv_header {
53	__le16 tlv_type;
54	/* len excluding the header */
55	__le16 tlv_len;
56} __attribute__ ((__packed__));
57
58/* commands */
59enum btrfs_send_cmd {
60	BTRFS_SEND_C_UNSPEC,
61
62	BTRFS_SEND_C_SUBVOL,
63	BTRFS_SEND_C_SNAPSHOT,
64
65	BTRFS_SEND_C_MKFILE,
66	BTRFS_SEND_C_MKDIR,
67	BTRFS_SEND_C_MKNOD,
68	BTRFS_SEND_C_MKFIFO,
69	BTRFS_SEND_C_MKSOCK,
70	BTRFS_SEND_C_SYMLINK,
71
72	BTRFS_SEND_C_RENAME,
73	BTRFS_SEND_C_LINK,
74	BTRFS_SEND_C_UNLINK,
75	BTRFS_SEND_C_RMDIR,
76
77	BTRFS_SEND_C_SET_XATTR,
78	BTRFS_SEND_C_REMOVE_XATTR,
79
80	BTRFS_SEND_C_WRITE,
81	BTRFS_SEND_C_CLONE,
82
83	BTRFS_SEND_C_TRUNCATE,
84	BTRFS_SEND_C_CHMOD,
85	BTRFS_SEND_C_CHOWN,
86	BTRFS_SEND_C_UTIMES,
87
88	BTRFS_SEND_C_END,
89	BTRFS_SEND_C_UPDATE_EXTENT,
90	__BTRFS_SEND_C_MAX,
91};
92#define BTRFS_SEND_C_MAX (__BTRFS_SEND_C_MAX - 1)
93
94/* attributes in send stream */
95enum {
96	BTRFS_SEND_A_UNSPEC,
97
98	BTRFS_SEND_A_UUID,
99	BTRFS_SEND_A_CTRANSID,
100
101	BTRFS_SEND_A_INO,
102	BTRFS_SEND_A_SIZE,
103	BTRFS_SEND_A_MODE,
104	BTRFS_SEND_A_UID,
105	BTRFS_SEND_A_GID,
106	BTRFS_SEND_A_RDEV,
107	BTRFS_SEND_A_CTIME,
108	BTRFS_SEND_A_MTIME,
109	BTRFS_SEND_A_ATIME,
110	BTRFS_SEND_A_OTIME,
111
112	BTRFS_SEND_A_XATTR_NAME,
113	BTRFS_SEND_A_XATTR_DATA,
114
115	BTRFS_SEND_A_PATH,
116	BTRFS_SEND_A_PATH_TO,
117	BTRFS_SEND_A_PATH_LINK,
118
119	BTRFS_SEND_A_FILE_OFFSET,
120	BTRFS_SEND_A_DATA,
121
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,
127
128	__BTRFS_SEND_A_MAX,
129};
130#define BTRFS_SEND_A_MAX (__BTRFS_SEND_A_MAX - 1)
131
132#ifdef __KERNEL__
133long btrfs_ioctl_send(struct file *mnt_file, void __user *arg);
134#endif
135