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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 | ||
28 | enum 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 | ||
39 | struct btrfs_stream_header { | |
40 | char magic[sizeof(BTRFS_SEND_STREAM_MAGIC)]; | |
41 | __le32 version; | |
42 | } __attribute__ ((__packed__)); | |
43 | ||
44 | struct 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 | ||
52 | struct btrfs_tlv_header { | |
53 | __le16 tlv_type; | |
54 | /* len excluding the header */ | |
55 | __le16 tlv_len; | |
56 | } __attribute__ ((__packed__)); | |
57 | ||
58 | /* commands */ | |
59 | enum 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 */ | |
94 | enum { | |
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__ | |
132 | long btrfs_ioctl_send(struct file *mnt_file, void __user *arg); | |
133 | int write_buf(struct file *filp, const void *buf, u32 len, loff_t *off); | |
134 | #endif |