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