LXR linux/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#define BTRFS_SEND_READ_SIZE (48 * SZ_1K)
  17
  18enum btrfs_tlv_type {
  19        BTRFS_TLV_U8,
  20        BTRFS_TLV_U16,
  21        BTRFS_TLV_U32,
  22        BTRFS_TLV_U64,
  23        BTRFS_TLV_BINARY,
  24        BTRFS_TLV_STRING,
  25        BTRFS_TLV_UUID,
  26        BTRFS_TLV_TIMESPEC,
  27};
  28
  29struct btrfs_stream_header {
  30        char magic[sizeof(BTRFS_SEND_STREAM_MAGIC)];
  31        __le32 version;
  32} __attribute__ ((__packed__));
  33
  34struct btrfs_cmd_header {
  35        /* len excluding the header */
  36        __le32 len;
  37        __le16 cmd;
  38        /* crc including the header with zero crc field */
  39        __le32 crc;
  40} __attribute__ ((__packed__));
  41
  42struct btrfs_tlv_header {
  43        __le16 tlv_type;
  44        /* len excluding the header */
  45        __le16 tlv_len;
  46} __attribute__ ((__packed__));
  47
  48/* commands */
  49enum btrfs_send_cmd {
  50        BTRFS_SEND_C_UNSPEC,
  51
  52        BTRFS_SEND_C_SUBVOL,
  53        BTRFS_SEND_C_SNAPSHOT,
  54
  55        BTRFS_SEND_C_MKFILE,
  56        BTRFS_SEND_C_MKDIR,
  57        BTRFS_SEND_C_MKNOD,
  58        BTRFS_SEND_C_MKFIFO,
  59        BTRFS_SEND_C_MKSOCK,
  60        BTRFS_SEND_C_SYMLINK,
  61
  62        BTRFS_SEND_C_RENAME,
  63        BTRFS_SEND_C_LINK,
  64        BTRFS_SEND_C_UNLINK,
  65        BTRFS_SEND_C_RMDIR,
  66
  67        BTRFS_SEND_C_SET_XATTR,
  68        BTRFS_SEND_C_REMOVE_XATTR,
  69
  70        BTRFS_SEND_C_WRITE,
  71        BTRFS_SEND_C_CLONE,
  72
  73        BTRFS_SEND_C_TRUNCATE,
  74        BTRFS_SEND_C_CHMOD,
  75        BTRFS_SEND_C_CHOWN,
  76        BTRFS_SEND_C_UTIMES,
  77
  78        BTRFS_SEND_C_END,
  79        BTRFS_SEND_C_UPDATE_EXTENT,
  80        __BTRFS_SEND_C_MAX,
  81};
  82#define BTRFS_SEND_C_MAX (__BTRFS_SEND_C_MAX - 1)
  83
  84/* attributes in send stream */
  85enum {
  86        BTRFS_SEND_A_UNSPEC,
  87
  88        BTRFS_SEND_A_UUID,
  89        BTRFS_SEND_A_CTRANSID,
  90
  91        BTRFS_SEND_A_INO,
  92        BTRFS_SEND_A_SIZE,
  93        BTRFS_SEND_A_MODE,
  94        BTRFS_SEND_A_UID,
  95        BTRFS_SEND_A_GID,
  96        BTRFS_SEND_A_RDEV,
  97        BTRFS_SEND_A_CTIME,
  98        BTRFS_SEND_A_MTIME,
  99        BTRFS_SEND_A_ATIME,
 100        BTRFS_SEND_A_OTIME,
 101
 102        BTRFS_SEND_A_XATTR_NAME,
 103        BTRFS_SEND_A_XATTR_DATA,
 104
 105        BTRFS_SEND_A_PATH,
 106        BTRFS_SEND_A_PATH_TO,
 107        BTRFS_SEND_A_PATH_LINK,
 108
 109        BTRFS_SEND_A_FILE_OFFSET,
 110        BTRFS_SEND_A_DATA,
 111
 112        BTRFS_SEND_A_CLONE_UUID,
 113        BTRFS_SEND_A_CLONE_CTRANSID,
 114        BTRFS_SEND_A_CLONE_PATH,
 115        BTRFS_SEND_A_CLONE_OFFSET,
 116        BTRFS_SEND_A_CLONE_LEN,
 117
 118        __BTRFS_SEND_A_MAX,
 119};
 120#define BTRFS_SEND_A_MAX (__BTRFS_SEND_A_MAX - 1)
 121
 122#ifdef __KERNEL__
 123long btrfs_ioctl_send(struct file *mnt_file, struct btrfs_ioctl_send_args *arg);
 124#endif
 125
 126#endif
 127