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183 lines
4.1 KiB
183 lines
4.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright (C) 2012 Alexander Block. All rights reserved. |
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* Copyright (C) 2012 STRATO. All rights reserved. |
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*/ |
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#ifndef BTRFS_SEND_H |
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#define BTRFS_SEND_H |
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#include <linux/types.h> |
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#define BTRFS_SEND_STREAM_MAGIC "btrfs-stream" |
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/* Conditional support for the upcoming protocol version. */ |
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#ifdef CONFIG_BTRFS_DEBUG |
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#define BTRFS_SEND_STREAM_VERSION 3 |
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#else |
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#define BTRFS_SEND_STREAM_VERSION 2 |
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#endif |
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/* |
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* In send stream v1, no command is larger than 64K. In send stream v2, no limit |
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* should be assumed. |
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*/ |
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#define BTRFS_SEND_BUF_SIZE_V1 SZ_64K |
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struct inode; |
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struct btrfs_ioctl_send_args; |
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enum btrfs_tlv_type { |
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BTRFS_TLV_U8, |
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BTRFS_TLV_U16, |
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BTRFS_TLV_U32, |
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BTRFS_TLV_U64, |
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BTRFS_TLV_BINARY, |
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BTRFS_TLV_STRING, |
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BTRFS_TLV_UUID, |
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BTRFS_TLV_TIMESPEC, |
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}; |
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struct btrfs_stream_header { |
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char magic[sizeof(BTRFS_SEND_STREAM_MAGIC)]; |
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__le32 version; |
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} __attribute__ ((__packed__)); |
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struct btrfs_cmd_header { |
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/* len excluding the header */ |
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__le32 len; |
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__le16 cmd; |
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/* crc including the header with zero crc field */ |
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__le32 crc; |
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} __attribute__ ((__packed__)); |
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struct btrfs_tlv_header { |
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__le16 tlv_type; |
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/* len excluding the header */ |
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__le16 tlv_len; |
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} __attribute__ ((__packed__)); |
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/* commands */ |
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enum btrfs_send_cmd { |
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BTRFS_SEND_C_UNSPEC = 0, |
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/* Version 1 */ |
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BTRFS_SEND_C_SUBVOL = 1, |
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BTRFS_SEND_C_SNAPSHOT = 2, |
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BTRFS_SEND_C_MKFILE = 3, |
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BTRFS_SEND_C_MKDIR = 4, |
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BTRFS_SEND_C_MKNOD = 5, |
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BTRFS_SEND_C_MKFIFO = 6, |
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BTRFS_SEND_C_MKSOCK = 7, |
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BTRFS_SEND_C_SYMLINK = 8, |
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BTRFS_SEND_C_RENAME = 9, |
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BTRFS_SEND_C_LINK = 10, |
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BTRFS_SEND_C_UNLINK = 11, |
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BTRFS_SEND_C_RMDIR = 12, |
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BTRFS_SEND_C_SET_XATTR = 13, |
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BTRFS_SEND_C_REMOVE_XATTR = 14, |
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BTRFS_SEND_C_WRITE = 15, |
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BTRFS_SEND_C_CLONE = 16, |
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BTRFS_SEND_C_TRUNCATE = 17, |
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BTRFS_SEND_C_CHMOD = 18, |
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BTRFS_SEND_C_CHOWN = 19, |
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BTRFS_SEND_C_UTIMES = 20, |
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BTRFS_SEND_C_END = 21, |
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BTRFS_SEND_C_UPDATE_EXTENT = 22, |
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BTRFS_SEND_C_MAX_V1 = 22, |
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/* Version 2 */ |
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BTRFS_SEND_C_FALLOCATE = 23, |
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BTRFS_SEND_C_FILEATTR = 24, |
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BTRFS_SEND_C_ENCODED_WRITE = 25, |
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BTRFS_SEND_C_MAX_V2 = 25, |
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/* Version 3 */ |
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BTRFS_SEND_C_ENABLE_VERITY = 26, |
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BTRFS_SEND_C_MAX_V3 = 26, |
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/* End */ |
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BTRFS_SEND_C_MAX = 26, |
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}; |
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/* attributes in send stream */ |
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enum { |
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BTRFS_SEND_A_UNSPEC = 0, |
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/* Version 1 */ |
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BTRFS_SEND_A_UUID = 1, |
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BTRFS_SEND_A_CTRANSID = 2, |
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BTRFS_SEND_A_INO = 3, |
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BTRFS_SEND_A_SIZE = 4, |
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BTRFS_SEND_A_MODE = 5, |
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BTRFS_SEND_A_UID = 6, |
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BTRFS_SEND_A_GID = 7, |
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BTRFS_SEND_A_RDEV = 8, |
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BTRFS_SEND_A_CTIME = 9, |
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BTRFS_SEND_A_MTIME = 10, |
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BTRFS_SEND_A_ATIME = 11, |
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BTRFS_SEND_A_OTIME = 12, |
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BTRFS_SEND_A_XATTR_NAME = 13, |
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BTRFS_SEND_A_XATTR_DATA = 14, |
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BTRFS_SEND_A_PATH = 15, |
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BTRFS_SEND_A_PATH_TO = 16, |
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BTRFS_SEND_A_PATH_LINK = 17, |
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BTRFS_SEND_A_FILE_OFFSET = 18, |
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/* |
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* As of send stream v2, this attribute is special: it must be the last |
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* attribute in a command, its header contains only the type, and its |
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* length is implicitly the remaining length of the command. |
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*/ |
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BTRFS_SEND_A_DATA = 19, |
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BTRFS_SEND_A_CLONE_UUID = 20, |
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BTRFS_SEND_A_CLONE_CTRANSID = 21, |
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BTRFS_SEND_A_CLONE_PATH = 22, |
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BTRFS_SEND_A_CLONE_OFFSET = 23, |
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BTRFS_SEND_A_CLONE_LEN = 24, |
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BTRFS_SEND_A_MAX_V1 = 24, |
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/* Version 2 */ |
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BTRFS_SEND_A_FALLOCATE_MODE = 25, |
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/* |
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* File attributes from the FS_*_FL namespace (i_flags, xflags), |
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* translated to BTRFS_INODE_* bits (BTRFS_INODE_FLAG_MASK) and stored |
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* in btrfs_inode_item::flags (represented by btrfs_inode::flags and |
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* btrfs_inode::ro_flags). |
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*/ |
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BTRFS_SEND_A_FILEATTR = 26, |
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BTRFS_SEND_A_UNENCODED_FILE_LEN = 27, |
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BTRFS_SEND_A_UNENCODED_LEN = 28, |
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BTRFS_SEND_A_UNENCODED_OFFSET = 29, |
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/* |
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* COMPRESSION and ENCRYPTION default to NONE (0) if omitted from |
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* BTRFS_SEND_C_ENCODED_WRITE. |
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*/ |
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BTRFS_SEND_A_COMPRESSION = 30, |
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BTRFS_SEND_A_ENCRYPTION = 31, |
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BTRFS_SEND_A_MAX_V2 = 31, |
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/* Version 3 */ |
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BTRFS_SEND_A_VERITY_ALGORITHM = 32, |
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BTRFS_SEND_A_VERITY_BLOCK_SIZE = 33, |
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BTRFS_SEND_A_VERITY_SALT_DATA = 34, |
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BTRFS_SEND_A_VERITY_SIG_DATA = 35, |
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BTRFS_SEND_A_MAX_V3 = 35, |
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__BTRFS_SEND_A_MAX = 35, |
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}; |
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long btrfs_ioctl_send(struct inode *inode, struct btrfs_ioctl_send_args *arg); |
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#endif
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