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gerrit-public.fairphone.software / kernel / msm-4.9 / 5b3d5aeaa333850756f41350fed2fc95912b2a4f / . / fs / btrfs / send.h
blob: 1bf4f32fd4ef28582c6d2401571bf2f7f37617a6 [file] [log] [blame]
Alexander Block31db9f72012-07-25 23:19:24 +0200[diff] [blame]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_MAX,
90};
91#define BTRFS_SEND_C_MAX (__BTRFS_SEND_C_MAX - 1)
92
93/* attributes in send stream */
94enum {
95 BTRFS_SEND_A_UNSPEC,
96
97 BTRFS_SEND_A_UUID,
98 BTRFS_SEND_A_CTRANSID,
99
100 BTRFS_SEND_A_INO,
101 BTRFS_SEND_A_SIZE,
102 BTRFS_SEND_A_MODE,
103 BTRFS_SEND_A_UID,
104 BTRFS_SEND_A_GID,
105 BTRFS_SEND_A_RDEV,
106 BTRFS_SEND_A_CTIME,
107 BTRFS_SEND_A_MTIME,
108 BTRFS_SEND_A_ATIME,
109 BTRFS_SEND_A_OTIME,
110
111 BTRFS_SEND_A_XATTR_NAME,
112 BTRFS_SEND_A_XATTR_DATA,
113
114 BTRFS_SEND_A_PATH,
115 BTRFS_SEND_A_PATH_TO,
116 BTRFS_SEND_A_PATH_LINK,
117
118 BTRFS_SEND_A_FILE_OFFSET,
119 BTRFS_SEND_A_DATA,
120
121 BTRFS_SEND_A_CLONE_UUID,
122 BTRFS_SEND_A_CLONE_CTRANSID,
123 BTRFS_SEND_A_CLONE_PATH,
124 BTRFS_SEND_A_CLONE_OFFSET,
125 BTRFS_SEND_A_CLONE_LEN,
126
127 __BTRFS_SEND_A_MAX,
128};
129#define BTRFS_SEND_A_MAX (__BTRFS_SEND_A_MAX - 1)
130
131#ifdef __KERNEL__
132long btrfs_ioctl_send(struct file *mnt_file, void __user *arg);
Anand Jain1bcea352012-09-14 00:04:21 -0600[diff] [blame]133int write_buf(struct file *filp, const void *buf, u32 len, loff_t *off);
Alexander Block31db9f72012-07-25 23:19:24 +0200[diff] [blame]134#endif