xref: /OK3568_Linux_fs/kernel/fs/btrfs/send.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun  * Copyright (C) 2012 Alexander Block.  All rights reserved.
4*4882a593Smuzhiyun  * Copyright (C) 2012 STRATO.  All rights reserved.
5*4882a593Smuzhiyun  */
6*4882a593Smuzhiyun 
7*4882a593Smuzhiyun #ifndef BTRFS_SEND_H
8*4882a593Smuzhiyun #define BTRFS_SEND_H
9*4882a593Smuzhiyun 
10*4882a593Smuzhiyun #include "ctree.h"
11*4882a593Smuzhiyun 
12*4882a593Smuzhiyun #define BTRFS_SEND_STREAM_MAGIC "btrfs-stream"
13*4882a593Smuzhiyun #define BTRFS_SEND_STREAM_VERSION 1
14*4882a593Smuzhiyun 
15*4882a593Smuzhiyun #define BTRFS_SEND_BUF_SIZE SZ_64K
16*4882a593Smuzhiyun 
17*4882a593Smuzhiyun enum btrfs_tlv_type {
18*4882a593Smuzhiyun 	BTRFS_TLV_U8,
19*4882a593Smuzhiyun 	BTRFS_TLV_U16,
20*4882a593Smuzhiyun 	BTRFS_TLV_U32,
21*4882a593Smuzhiyun 	BTRFS_TLV_U64,
22*4882a593Smuzhiyun 	BTRFS_TLV_BINARY,
23*4882a593Smuzhiyun 	BTRFS_TLV_STRING,
24*4882a593Smuzhiyun 	BTRFS_TLV_UUID,
25*4882a593Smuzhiyun 	BTRFS_TLV_TIMESPEC,
26*4882a593Smuzhiyun };
27*4882a593Smuzhiyun 
28*4882a593Smuzhiyun struct btrfs_stream_header {
29*4882a593Smuzhiyun 	char magic[sizeof(BTRFS_SEND_STREAM_MAGIC)];
30*4882a593Smuzhiyun 	__le32 version;
31*4882a593Smuzhiyun } __attribute__ ((__packed__));
32*4882a593Smuzhiyun 
33*4882a593Smuzhiyun struct btrfs_cmd_header {
34*4882a593Smuzhiyun 	/* len excluding the header */
35*4882a593Smuzhiyun 	__le32 len;
36*4882a593Smuzhiyun 	__le16 cmd;
37*4882a593Smuzhiyun 	/* crc including the header with zero crc field */
38*4882a593Smuzhiyun 	__le32 crc;
39*4882a593Smuzhiyun } __attribute__ ((__packed__));
40*4882a593Smuzhiyun 
41*4882a593Smuzhiyun struct btrfs_tlv_header {
42*4882a593Smuzhiyun 	__le16 tlv_type;
43*4882a593Smuzhiyun 	/* len excluding the header */
44*4882a593Smuzhiyun 	__le16 tlv_len;
45*4882a593Smuzhiyun } __attribute__ ((__packed__));
46*4882a593Smuzhiyun 
47*4882a593Smuzhiyun /* commands */
48*4882a593Smuzhiyun enum btrfs_send_cmd {
49*4882a593Smuzhiyun 	BTRFS_SEND_C_UNSPEC,
50*4882a593Smuzhiyun 
51*4882a593Smuzhiyun 	BTRFS_SEND_C_SUBVOL,
52*4882a593Smuzhiyun 	BTRFS_SEND_C_SNAPSHOT,
53*4882a593Smuzhiyun 
54*4882a593Smuzhiyun 	BTRFS_SEND_C_MKFILE,
55*4882a593Smuzhiyun 	BTRFS_SEND_C_MKDIR,
56*4882a593Smuzhiyun 	BTRFS_SEND_C_MKNOD,
57*4882a593Smuzhiyun 	BTRFS_SEND_C_MKFIFO,
58*4882a593Smuzhiyun 	BTRFS_SEND_C_MKSOCK,
59*4882a593Smuzhiyun 	BTRFS_SEND_C_SYMLINK,
60*4882a593Smuzhiyun 
61*4882a593Smuzhiyun 	BTRFS_SEND_C_RENAME,
62*4882a593Smuzhiyun 	BTRFS_SEND_C_LINK,
63*4882a593Smuzhiyun 	BTRFS_SEND_C_UNLINK,
64*4882a593Smuzhiyun 	BTRFS_SEND_C_RMDIR,
65*4882a593Smuzhiyun 
66*4882a593Smuzhiyun 	BTRFS_SEND_C_SET_XATTR,
67*4882a593Smuzhiyun 	BTRFS_SEND_C_REMOVE_XATTR,
68*4882a593Smuzhiyun 
69*4882a593Smuzhiyun 	BTRFS_SEND_C_WRITE,
70*4882a593Smuzhiyun 	BTRFS_SEND_C_CLONE,
71*4882a593Smuzhiyun 
72*4882a593Smuzhiyun 	BTRFS_SEND_C_TRUNCATE,
73*4882a593Smuzhiyun 	BTRFS_SEND_C_CHMOD,
74*4882a593Smuzhiyun 	BTRFS_SEND_C_CHOWN,
75*4882a593Smuzhiyun 	BTRFS_SEND_C_UTIMES,
76*4882a593Smuzhiyun 
77*4882a593Smuzhiyun 	BTRFS_SEND_C_END,
78*4882a593Smuzhiyun 	BTRFS_SEND_C_UPDATE_EXTENT,
79*4882a593Smuzhiyun 	__BTRFS_SEND_C_MAX,
80*4882a593Smuzhiyun };
81*4882a593Smuzhiyun #define BTRFS_SEND_C_MAX (__BTRFS_SEND_C_MAX - 1)
82*4882a593Smuzhiyun 
83*4882a593Smuzhiyun /* attributes in send stream */
84*4882a593Smuzhiyun enum {
85*4882a593Smuzhiyun 	BTRFS_SEND_A_UNSPEC,
86*4882a593Smuzhiyun 
87*4882a593Smuzhiyun 	BTRFS_SEND_A_UUID,
88*4882a593Smuzhiyun 	BTRFS_SEND_A_CTRANSID,
89*4882a593Smuzhiyun 
90*4882a593Smuzhiyun 	BTRFS_SEND_A_INO,
91*4882a593Smuzhiyun 	BTRFS_SEND_A_SIZE,
92*4882a593Smuzhiyun 	BTRFS_SEND_A_MODE,
93*4882a593Smuzhiyun 	BTRFS_SEND_A_UID,
94*4882a593Smuzhiyun 	BTRFS_SEND_A_GID,
95*4882a593Smuzhiyun 	BTRFS_SEND_A_RDEV,
96*4882a593Smuzhiyun 	BTRFS_SEND_A_CTIME,
97*4882a593Smuzhiyun 	BTRFS_SEND_A_MTIME,
98*4882a593Smuzhiyun 	BTRFS_SEND_A_ATIME,
99*4882a593Smuzhiyun 	BTRFS_SEND_A_OTIME,
100*4882a593Smuzhiyun 
101*4882a593Smuzhiyun 	BTRFS_SEND_A_XATTR_NAME,
102*4882a593Smuzhiyun 	BTRFS_SEND_A_XATTR_DATA,
103*4882a593Smuzhiyun 
104*4882a593Smuzhiyun 	BTRFS_SEND_A_PATH,
105*4882a593Smuzhiyun 	BTRFS_SEND_A_PATH_TO,
106*4882a593Smuzhiyun 	BTRFS_SEND_A_PATH_LINK,
107*4882a593Smuzhiyun 
108*4882a593Smuzhiyun 	BTRFS_SEND_A_FILE_OFFSET,
109*4882a593Smuzhiyun 	BTRFS_SEND_A_DATA,
110*4882a593Smuzhiyun 
111*4882a593Smuzhiyun 	BTRFS_SEND_A_CLONE_UUID,
112*4882a593Smuzhiyun 	BTRFS_SEND_A_CLONE_CTRANSID,
113*4882a593Smuzhiyun 	BTRFS_SEND_A_CLONE_PATH,
114*4882a593Smuzhiyun 	BTRFS_SEND_A_CLONE_OFFSET,
115*4882a593Smuzhiyun 	BTRFS_SEND_A_CLONE_LEN,
116*4882a593Smuzhiyun 
117*4882a593Smuzhiyun 	__BTRFS_SEND_A_MAX,
118*4882a593Smuzhiyun };
119*4882a593Smuzhiyun #define BTRFS_SEND_A_MAX (__BTRFS_SEND_A_MAX - 1)
120*4882a593Smuzhiyun 
121*4882a593Smuzhiyun #ifdef __KERNEL__
122*4882a593Smuzhiyun long btrfs_ioctl_send(struct file *mnt_file, struct btrfs_ioctl_send_args *arg);
123*4882a593Smuzhiyun #endif
124*4882a593Smuzhiyun 
125*4882a593Smuzhiyun #endif
126