/* 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 /* * In send stream v1, no command is larger than 64K. In send stream v2, no limit * should be assumed. */ #define BTRFS_SEND_BUF_SIZE_V1 SZ_64K 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 = 0, /* Version 1 */ BTRFS_SEND_C_SUBVOL = 1, BTRFS_SEND_C_SNAPSHOT = 2, BTRFS_SEND_C_MKFILE = 3, BTRFS_SEND_C_MKDIR = 4, BTRFS_SEND_C_MKNOD = 5, BTRFS_SEND_C_MKFIFO = 6, BTRFS_SEND_C_MKSOCK = 7, BTRFS_SEND_C_SYMLINK = 8, BTRFS_SEND_C_RENAME = 9, BTRFS_SEND_C_LINK = 10, BTRFS_SEND_C_UNLINK = 11, BTRFS_SEND_C_RMDIR = 12, BTRFS_SEND_C_SET_XATTR = 13, BTRFS_SEND_C_REMOVE_XATTR = 14, BTRFS_SEND_C_WRITE = 15, BTRFS_SEND_C_CLONE = 16, BTRFS_SEND_C_TRUNCATE = 17, BTRFS_SEND_C_CHMOD = 18, BTRFS_SEND_C_CHOWN = 19, BTRFS_SEND_C_UTIMES = 20, BTRFS_SEND_C_END = 21, BTRFS_SEND_C_UPDATE_EXTENT = 22, BTRFS_SEND_C_MAX_V1 = 22, /* Version 2 */ BTRFS_SEND_C_FALLOCATE = 23, BTRFS_SEND_C_SETFLAGS = 24, BTRFS_SEND_C_ENCODED_WRITE = 25, BTRFS_SEND_C_MAX_V2 = 25, /* End */ BTRFS_SEND_C_MAX = 25, }; /* attributes in send stream */ enum { BTRFS_SEND_A_UNSPEC = 0, /* Version 1 */ BTRFS_SEND_A_UUID = 1, BTRFS_SEND_A_CTRANSID = 2, BTRFS_SEND_A_INO = 3, BTRFS_SEND_A_SIZE = 4, BTRFS_SEND_A_MODE = 5, BTRFS_SEND_A_UID = 6, BTRFS_SEND_A_GID = 7, BTRFS_SEND_A_RDEV = 8, BTRFS_SEND_A_CTIME = 9, BTRFS_SEND_A_MTIME = 10, BTRFS_SEND_A_ATIME = 11, BTRFS_SEND_A_OTIME = 12, BTRFS_SEND_A_XATTR_NAME = 13, BTRFS_SEND_A_XATTR_DATA = 14, BTRFS_SEND_A_PATH = 15, BTRFS_SEND_A_PATH_TO = 16, BTRFS_SEND_A_PATH_LINK = 17, BTRFS_SEND_A_FILE_OFFSET = 18, /* * As of send stream v2, this attribute is special: it must be the last * attribute in a command, its header contains only the type, and its * length is implicitly the remaining length of the command. */ BTRFS_SEND_A_DATA = 19, BTRFS_SEND_A_CLONE_UUID = 20, BTRFS_SEND_A_CLONE_CTRANSID = 21, BTRFS_SEND_A_CLONE_PATH = 22, BTRFS_SEND_A_CLONE_OFFSET = 23, BTRFS_SEND_A_CLONE_LEN = 24, BTRFS_SEND_A_MAX_V1 = 24, /* Version 2 */ BTRFS_SEND_A_FALLOCATE_MODE = 25, BTRFS_SEND_A_SETFLAGS_FLAGS = 26, BTRFS_SEND_A_UNENCODED_FILE_LEN = 27, BTRFS_SEND_A_UNENCODED_LEN = 28, BTRFS_SEND_A_UNENCODED_OFFSET = 29, /* * COMPRESSION and ENCRYPTION default to NONE (0) if omitted from * BTRFS_SEND_C_ENCODED_WRITE. */ BTRFS_SEND_A_COMPRESSION = 30, BTRFS_SEND_A_ENCRYPTION = 31, BTRFS_SEND_A_MAX_V2 = 31, /* End */ BTRFS_SEND_A_MAX = 31, }; #ifdef __KERNEL__ long btrfs_ioctl_send(struct inode *inode, struct btrfs_ioctl_send_args *arg); #endif #endif