mirror of
https://github.com/torvalds/linux.git
synced 2024-12-03 17:41:22 +00:00
d681559280
Now that the new support is implemented, allow the ioctl to accept v2 and the compressed flag, and update the version in sysfs. Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: David Sterba <dsterba@suse.com>
163 lines
3.5 KiB
C
163 lines
3.5 KiB
C
/* 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 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
|
|
|
|
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
|