| /* 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 <linux/types.h> |
| |
| #define BTRFS_SEND_STREAM_MAGIC "btrfs-stream" |
| #define BTRFS_SEND_STREAM_VERSION 2 |
| |
| /* |
| * 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 |
| |
| struct inode; |
| struct btrfs_ioctl_send_args; |
| |
| 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_FILEATTR = 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, |
| |
| /* |
| * File attributes from the FS_*_FL namespace (i_flags, xflags), |
| * translated to BTRFS_INODE_* bits (BTRFS_INODE_FLAG_MASK) and stored |
| * in btrfs_inode_item::flags (represented by btrfs_inode::flags and |
| * btrfs_inode::ro_flags). |
| */ |
| BTRFS_SEND_A_FILEATTR = 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, |
| }; |
| |
| long btrfs_ioctl_send(struct inode *inode, struct btrfs_ioctl_send_args *arg); |
| |
| #endif |