1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (C) 2012 Alexander Block. All rights reserved.
4 * Copyright (C) 2012 STRATO. All rights reserved.
10 #include <linux/types.h>
12 #define BTRFS_SEND_STREAM_MAGIC "btrfs-stream"
13 /* Conditional support for the upcoming protocol version. */
14 #ifdef CONFIG_BTRFS_DEBUG
15 #define BTRFS_SEND_STREAM_VERSION 3
17 #define BTRFS_SEND_STREAM_VERSION 2
21 * In send stream v1, no command is larger than 64K. In send stream v2, no limit
24 #define BTRFS_SEND_BUF_SIZE_V1 SZ_64K
27 struct btrfs_ioctl_send_args;
40 struct btrfs_stream_header {
41 char magic[sizeof(BTRFS_SEND_STREAM_MAGIC)];
43 } __attribute__ ((__packed__));
45 struct btrfs_cmd_header {
46 /* len excluding the header */
49 /* crc including the header with zero crc field */
51 } __attribute__ ((__packed__));
53 struct btrfs_tlv_header {
55 /* len excluding the header */
57 } __attribute__ ((__packed__));
61 BTRFS_SEND_C_UNSPEC = 0,
64 BTRFS_SEND_C_SUBVOL = 1,
65 BTRFS_SEND_C_SNAPSHOT = 2,
67 BTRFS_SEND_C_MKFILE = 3,
68 BTRFS_SEND_C_MKDIR = 4,
69 BTRFS_SEND_C_MKNOD = 5,
70 BTRFS_SEND_C_MKFIFO = 6,
71 BTRFS_SEND_C_MKSOCK = 7,
72 BTRFS_SEND_C_SYMLINK = 8,
74 BTRFS_SEND_C_RENAME = 9,
75 BTRFS_SEND_C_LINK = 10,
76 BTRFS_SEND_C_UNLINK = 11,
77 BTRFS_SEND_C_RMDIR = 12,
79 BTRFS_SEND_C_SET_XATTR = 13,
80 BTRFS_SEND_C_REMOVE_XATTR = 14,
82 BTRFS_SEND_C_WRITE = 15,
83 BTRFS_SEND_C_CLONE = 16,
85 BTRFS_SEND_C_TRUNCATE = 17,
86 BTRFS_SEND_C_CHMOD = 18,
87 BTRFS_SEND_C_CHOWN = 19,
88 BTRFS_SEND_C_UTIMES = 20,
90 BTRFS_SEND_C_END = 21,
91 BTRFS_SEND_C_UPDATE_EXTENT = 22,
92 BTRFS_SEND_C_MAX_V1 = 22,
95 BTRFS_SEND_C_FALLOCATE = 23,
96 BTRFS_SEND_C_FILEATTR = 24,
97 BTRFS_SEND_C_ENCODED_WRITE = 25,
98 BTRFS_SEND_C_MAX_V2 = 25,
101 BTRFS_SEND_C_ENABLE_VERITY = 26,
102 BTRFS_SEND_C_MAX_V3 = 26,
104 BTRFS_SEND_C_MAX = 26,
107 /* attributes in send stream */
109 BTRFS_SEND_A_UNSPEC = 0,
112 BTRFS_SEND_A_UUID = 1,
113 BTRFS_SEND_A_CTRANSID = 2,
115 BTRFS_SEND_A_INO = 3,
116 BTRFS_SEND_A_SIZE = 4,
117 BTRFS_SEND_A_MODE = 5,
118 BTRFS_SEND_A_UID = 6,
119 BTRFS_SEND_A_GID = 7,
120 BTRFS_SEND_A_RDEV = 8,
121 BTRFS_SEND_A_CTIME = 9,
122 BTRFS_SEND_A_MTIME = 10,
123 BTRFS_SEND_A_ATIME = 11,
124 BTRFS_SEND_A_OTIME = 12,
126 BTRFS_SEND_A_XATTR_NAME = 13,
127 BTRFS_SEND_A_XATTR_DATA = 14,
129 BTRFS_SEND_A_PATH = 15,
130 BTRFS_SEND_A_PATH_TO = 16,
131 BTRFS_SEND_A_PATH_LINK = 17,
133 BTRFS_SEND_A_FILE_OFFSET = 18,
135 * As of send stream v2, this attribute is special: it must be the last
136 * attribute in a command, its header contains only the type, and its
137 * length is implicitly the remaining length of the command.
139 BTRFS_SEND_A_DATA = 19,
141 BTRFS_SEND_A_CLONE_UUID = 20,
142 BTRFS_SEND_A_CLONE_CTRANSID = 21,
143 BTRFS_SEND_A_CLONE_PATH = 22,
144 BTRFS_SEND_A_CLONE_OFFSET = 23,
145 BTRFS_SEND_A_CLONE_LEN = 24,
147 BTRFS_SEND_A_MAX_V1 = 24,
150 BTRFS_SEND_A_FALLOCATE_MODE = 25,
153 * File attributes from the FS_*_FL namespace (i_flags, xflags),
154 * translated to BTRFS_INODE_* bits (BTRFS_INODE_FLAG_MASK) and stored
155 * in btrfs_inode_item::flags (represented by btrfs_inode::flags and
156 * btrfs_inode::ro_flags).
158 BTRFS_SEND_A_FILEATTR = 26,
160 BTRFS_SEND_A_UNENCODED_FILE_LEN = 27,
161 BTRFS_SEND_A_UNENCODED_LEN = 28,
162 BTRFS_SEND_A_UNENCODED_OFFSET = 29,
164 * COMPRESSION and ENCRYPTION default to NONE (0) if omitted from
165 * BTRFS_SEND_C_ENCODED_WRITE.
167 BTRFS_SEND_A_COMPRESSION = 30,
168 BTRFS_SEND_A_ENCRYPTION = 31,
169 BTRFS_SEND_A_MAX_V2 = 31,
172 BTRFS_SEND_A_VERITY_ALGORITHM = 32,
173 BTRFS_SEND_A_VERITY_BLOCK_SIZE = 33,
174 BTRFS_SEND_A_VERITY_SALT_DATA = 34,
175 BTRFS_SEND_A_VERITY_SIG_DATA = 35,
176 BTRFS_SEND_A_MAX_V3 = 35,
178 __BTRFS_SEND_A_MAX = 35,
181 long btrfs_ioctl_send(struct inode *inode, struct btrfs_ioctl_send_args *arg);