linux-imx

/* SPDX-License-Identifier: GPL-2.0 */

/*

 * Copyright (C) 2012 Alexander Block.  All rights reserved.

 * Copyright (C) 2012 STRATO.  All rights reserved.

 */

​

#ifndef BTRFS_SEND_H

#define BTRFS_SEND_H

​

#include "ctree.h"

​

#define BTRFS_SEND_STREAM_MAGIC "btrfs-stream"

#define BTRFS_SEND_STREAM_VERSION 1

​

#define BTRFS_SEND_BUF_SIZE SZ_64K

#define BTRFS_SEND_READ_SIZE (48 * SZ_1K)

​

enum btrfs_tlv_type {

    BTRFS_TLV_U8,

    BTRFS_TLV_U16,

    BTRFS_TLV_U32,

    BTRFS_TLV_U64,

    BTRFS_TLV_BINARY,

    BTRFS_TLV_STRING,

    BTRFS_TLV_UUID,

    BTRFS_TLV_TIMESPEC,

};

​

struct btrfs_stream_header {

    char magic[sizeof(BTRFS_SEND_STREAM_MAGIC)];

    __le32 version;

} __attribute__ ((__packed__));

​

struct btrfs_cmd_header {

    /* len excluding the header */

    __le32 len;

    __le16 cmd;

    /* crc including the header with zero crc field */

    __le32 crc;

} __attribute__ ((__packed__));

​

struct btrfs_tlv_header {

    __le16 tlv_type;

    /* len excluding the header */

    __le16 tlv_len;

} __attribute__ ((__packed__));

​

/* commands */

enum btrfs_send_cmd {

    BTRFS_SEND_C_UNSPEC,

​

    BTRFS_SEND_C_SUBVOL,

    BTRFS_SEND_C_SNAPSHOT,

​

    BTRFS_SEND_C_MKFILE,

    BTRFS_SEND_C_MKDIR,

    BTRFS_SEND_C_MKNOD,

    BTRFS_SEND_C_MKFIFO,

    BTRFS_SEND_C_MKSOCK,

    BTRFS_SEND_C_SYMLINK,

​

    BTRFS_SEND_C_RENAME,

    BTRFS_SEND_C_LINK,

    BTRFS_SEND_C_UNLINK,

    BTRFS_SEND_C_RMDIR,

​

    BTRFS_SEND_C_SET_XATTR,

    BTRFS_SEND_C_REMOVE_XATTR,

​

    BTRFS_SEND_C_WRITE,

    BTRFS_SEND_C_CLONE,

​

    BTRFS_SEND_C_TRUNCATE,

    BTRFS_SEND_C_CHMOD,

    BTRFS_SEND_C_CHOWN,

    BTRFS_SEND_C_UTIMES,

​

    BTRFS_SEND_C_END,

    BTRFS_SEND_C_UPDATE_EXTENT,

    __BTRFS_SEND_C_MAX,

};

#define BTRFS_SEND_C_MAX (__BTRFS_SEND_C_MAX - 1)

​

/* attributes in send stream */

enum {

    BTRFS_SEND_A_UNSPEC,

​

    BTRFS_SEND_A_UUID,

    BTRFS_SEND_A_CTRANSID,

​

    BTRFS_SEND_A_INO,

    BTRFS_SEND_A_SIZE,