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