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,
  50
  51         BTRFS_SEND_C_SUBVOL,
  52         BTRFS_SEND_C_SNAPSHOT,
  53
  54         BTRFS_SEND_C_MKFILE,
  55         BTRFS_SEND_C_MKDIR,
  56         BTRFS_SEND_C_MKNOD,
  57         BTRFS_SEND_C_MKFIFO,
  58         BTRFS_SEND_C_MKSOCK,
  59         BTRFS_SEND_C_SYMLINK,
  60
  61         BTRFS_SEND_C_RENAME,
  62         BTRFS_SEND_C_LINK,
  63         BTRFS_SEND_C_UNLINK,
  64         BTRFS_SEND_C_RMDIR,
  65
  66         BTRFS_SEND_C_SET_XATTR,
  67         BTRFS_SEND_C_REMOVE_XATTR,
  68
  69         BTRFS_SEND_C_WRITE,
  70         BTRFS_SEND_C_CLONE,
  71
  72         BTRFS_SEND_C_TRUNCATE,
  73         BTRFS_SEND_C_CHMOD,
  74         BTRFS_SEND_C_CHOWN,
  75         BTRFS_SEND_C_UTIMES,
  76
  77         BTRFS_SEND_C_END,
  78         BTRFS_SEND_C_UPDATE_EXTENT,
  79         __BTRFS_SEND_C_MAX,
  80 };
  81 #define BTRFS_SEND_C_MAX (__BTRFS_SEND_C_MAX - 1)
  82
  83 /* attributes in send stream */
  84 enum {
  85         BTRFS_SEND_A_UNSPEC,
  86
  87         BTRFS_SEND_A_UUID,
  88         BTRFS_SEND_A_CTRANSID,
  89
  90         BTRFS_SEND_A_INO,
  91         BTRFS_SEND_A_SIZE,
  92         BTRFS_SEND_A_MODE,
  93         BTRFS_SEND_A_UID,
  94         BTRFS_SEND_A_GID,
  95         BTRFS_SEND_A_RDEV,
  96         BTRFS_SEND_A_CTIME,
  97         BTRFS_SEND_A_MTIME,
  98         BTRFS_SEND_A_ATIME,
  99         BTRFS_SEND_A_OTIME,
 100
 101         BTRFS_SEND_A_XATTR_NAME,
 102         BTRFS_SEND_A_XATTR_DATA,
 103
 104         BTRFS_SEND_A_PATH,
 105         BTRFS_SEND_A_PATH_TO,
 106         BTRFS_SEND_A_PATH_LINK,
 107
 108         BTRFS_SEND_A_FILE_OFFSET,
 109         BTRFS_SEND_A_DATA,
 110
 111         BTRFS_SEND_A_CLONE_UUID,
 112         BTRFS_SEND_A_CLONE_CTRANSID,
 113         BTRFS_SEND_A_CLONE_PATH,
 114         BTRFS_SEND_A_CLONE_OFFSET,
 115         BTRFS_SEND_A_CLONE_LEN,
 116
 117         __BTRFS_SEND_A_MAX,
 118 };
 119 #define BTRFS_SEND_A_MAX (__BTRFS_SEND_A_MAX - 1)
 120
 121 #ifdef __KERNEL__
 122 long btrfs_ioctl_send(struct file *mnt_file, struct btrfs_ioctl_send_args *arg);
 123 #endif
 124
 125 #endif