fs/btrfs/send.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2012 Alexander Block.  All rights reserved.
   4  * Copyright (C) 2012 STRATO.  All rights reserved.
   5  */
   6
   7 #ifndef BTRFS_SEND_H
   8 #define BTRFS_SEND_H
   9
  10 #include "ctree.h"
  11
  12 #define BTRFS_SEND_STREAM_MAGIC "btrfs-stream"
  13 #define BTRFS_SEND_STREAM_VERSION 1
  14
  15 #define BTRFS_SEND_BUF_SIZE SZ_64K
  16
  17 enum btrfs_tlv_type {
  18         BTRFS_TLV_U8,
  19         BTRFS_TLV_U16,
  20         BTRFS_TLV_U32,
  21         BTRFS_TLV_U64,
  22         BTRFS_TLV_BINARY,
  23         BTRFS_TLV_STRING,
  24         BTRFS_TLV_UUID,
  25         BTRFS_TLV_TIMESPEC,
  26 };
  27
  28 struct btrfs_stream_header {
  29         char magic[sizeof(BTRFS_SEND_STREAM_MAGIC)];
  30         __le32 version;
  31 } __attribute__ ((__packed__));
  32
  33 struct btrfs_cmd_header {
  34         /* len excluding the header */
  35         __le32 len;
  36         __le16 cmd;
  37         /* crc including the header with zero crc field */
  38         __le32 crc;
  39 } __attribute__ ((__packed__));
  40
  41 struct btrfs_tlv_header {
  42         __le16 tlv_type;
  43         /* len excluding the header */
  44         __le16 tlv_len;
  45 } __attribute__ ((__packed__));
  46
  47 /* commands */
  48 enum btrfs_send_cmd {
  49         BTRFS_SEND_C_UNSPEC             = 0,
  50
  51         /* Version 1 */
  52         BTRFS_SEND_C_SUBVOL             = 1,
  53         BTRFS_SEND_C_SNAPSHOT           = 2,
  54
  55         BTRFS_SEND_C_MKFILE             = 3,
  56         BTRFS_SEND_C_MKDIR              = 4,
  57         BTRFS_SEND_C_MKNOD              = 5,
  58         BTRFS_SEND_C_MKFIFO             = 6,
  59         BTRFS_SEND_C_MKSOCK             = 7,
  60         BTRFS_SEND_C_SYMLINK            = 8,
  61
  62         BTRFS_SEND_C_RENAME             = 9,
  63         BTRFS_SEND_C_LINK               = 10,
  64         BTRFS_SEND_C_UNLINK             = 11,
  65         BTRFS_SEND_C_RMDIR              = 12,
  66
  67         BTRFS_SEND_C_SET_XATTR          = 13,
  68         BTRFS_SEND_C_REMOVE_XATTR       = 14,
  69
  70         BTRFS_SEND_C_WRITE              = 15,
  71         BTRFS_SEND_C_CLONE              = 16,
  72
  73         BTRFS_SEND_C_TRUNCATE           = 17,
  74         BTRFS_SEND_C_CHMOD              = 18,
  75         BTRFS_SEND_C_CHOWN              = 19,
  76         BTRFS_SEND_C_UTIMES             = 20,
  77
  78         BTRFS_SEND_C_END                = 21,
  79         BTRFS_SEND_C_UPDATE_EXTENT      = 22,
  80         BTRFS_SEND_C_MAX_V1             = 22,
  81
  82         /* Version 2 */
  83         BTRFS_SEND_C_MAX_V2             = 22,
  84
  85         /* End */
  86         BTRFS_SEND_C_MAX                = 22,
  87 };
  88
  89 /* attributes in send stream */
  90 enum {
  91         BTRFS_SEND_A_UNSPEC             = 0,
  92
  93         BTRFS_SEND_A_UUID               = 1,
  94         BTRFS_SEND_A_CTRANSID           = 2,
  95
  96         BTRFS_SEND_A_INO                = 3,
  97         BTRFS_SEND_A_SIZE               = 4,
  98         BTRFS_SEND_A_MODE               = 5,
  99         BTRFS_SEND_A_UID                = 6,
 100         BTRFS_SEND_A_GID                = 7,
 101         BTRFS_SEND_A_RDEV               = 8,
 102         BTRFS_SEND_A_CTIME              = 9,
 103         BTRFS_SEND_A_MTIME              = 10,
 104         BTRFS_SEND_A_ATIME              = 11,
 105         BTRFS_SEND_A_OTIME              = 12,
 106
 107         BTRFS_SEND_A_XATTR_NAME         = 13,
 108         BTRFS_SEND_A_XATTR_DATA         = 14,
 109
 110         BTRFS_SEND_A_PATH               = 15,
 111         BTRFS_SEND_A_PATH_TO            = 16,
 112         BTRFS_SEND_A_PATH_LINK          = 17,
 113
 114         BTRFS_SEND_A_FILE_OFFSET        = 18,
 115         BTRFS_SEND_A_DATA               = 19,
 116
 117         BTRFS_SEND_A_CLONE_UUID         = 20,
 118         BTRFS_SEND_A_CLONE_CTRANSID     = 21,
 119         BTRFS_SEND_A_CLONE_PATH         = 22,
 120         BTRFS_SEND_A_CLONE_OFFSET       = 23,
 121         BTRFS_SEND_A_CLONE_LEN          = 24,
 122
 123         BTRFS_SEND_A_MAX                = 24,
 124 };
 125
 126 #ifdef __KERNEL__
 127 long btrfs_ioctl_send(struct inode *inode, struct btrfs_ioctl_send_args *arg);
 128 #endif
 129
 130 #endif