Revision 836855100b87b4dd7a82546131779dc255c18b67 authored by Cezary Rojewski on 19 May 2023, 20:17:09 UTC, committed by Mark Brown on 22 May 2023, 10:18:24 UTC
Configurations with multiple codecs attached to the platform are supported but only if each from the set is different. Add new field representing the 'Unique ID' so that codecs that share Vendor and Part IDs can be differentiated and thus enabling support for such configurations. Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com> Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com> Link: https://lore.kernel.org/r/20230519201711.4073845-6-amadeuszx.slawinski@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
1 parent 1cf036d
send.h
/* 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"
/* Conditional support for the upcoming protocol version. */
#ifdef CONFIG_BTRFS_DEBUG
#define BTRFS_SEND_STREAM_VERSION 3
#else
#define BTRFS_SEND_STREAM_VERSION 2
#endif
/*
* In send stream v1, no command is larger than 64K. In send stream v2, no
* limit should be assumed, the buffer size is set to be a header with
* compressed extent size.
*/
#define BTRFS_SEND_BUF_SIZE_V1 SZ_64K
#define BTRFS_SEND_BUF_SIZE_V2 ALIGN(SZ_16K + BTRFS_MAX_COMPRESSED, PAGE_SIZE)
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,
/* Version 3 */
BTRFS_SEND_C_ENABLE_VERITY = 26,
BTRFS_SEND_C_MAX_V3 = 26,
/* End */
BTRFS_SEND_C_MAX = 26,
};
/* 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,
/* Version 3 */
BTRFS_SEND_A_VERITY_ALGORITHM = 32,
BTRFS_SEND_A_VERITY_BLOCK_SIZE = 33,
BTRFS_SEND_A_VERITY_SALT_DATA = 34,
BTRFS_SEND_A_VERITY_SIG_DATA = 35,
BTRFS_SEND_A_MAX_V3 = 35,
__BTRFS_SEND_A_MAX = 35,
};
long btrfs_ioctl_send(struct inode *inode, struct btrfs_ioctl_send_args *arg);
#endif
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