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
  17enum 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
  28struct btrfs_stream_header {
  29        char magic[sizeof(BTRFS_SEND_STREAM_MAGIC)];
  30        __le32 version;
  31} __attribute__ ((__packed__));
  32
  33struct 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
  41struct btrfs_tlv_header {
  42        __le16 tlv_type;
  43        /* len excluding the header */
  44        __le16 tlv_len;
  45} __attribute__ ((__packed__));
  46
  47/* commands */
  48enum 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 */
  84enum {
  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__
 122long btrfs_ioctl_send(struct file *mnt_file, struct btrfs_ioctl_send_args *arg);
 123#endif
 124
 125#endif
 126