162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */
262306a36Sopenharmony_ci/*
362306a36Sopenharmony_ci * fs/epfs/epfs.h
462306a36Sopenharmony_ci *
562306a36Sopenharmony_ci * Copyright (c) 2022 Huawei Technologies Co., Ltd.
662306a36Sopenharmony_ci * Author: weilongping@huawei.com
762306a36Sopenharmony_ci * Create: 2022-06-10
862306a36Sopenharmony_ci */
962306a36Sopenharmony_ci#ifndef __FS_EPFS_H__
1062306a36Sopenharmony_ci#define __FS_EPFS_H__
1162306a36Sopenharmony_ci
1262306a36Sopenharmony_ci#include <linux/ioctl.h>
1362306a36Sopenharmony_ci#include <linux/printk.h>
1462306a36Sopenharmony_ci#include <linux/types.h>
1562306a36Sopenharmony_ci
1662306a36Sopenharmony_ci#define EPFS_MAX_RANGES 127
1762306a36Sopenharmony_ci
1862306a36Sopenharmony_cistruct __attribute__((__packed__)) epfs_range {
1962306a36Sopenharmony_ci	__u64 num;
2062306a36Sopenharmony_ci	__u64 reserved;
2162306a36Sopenharmony_ci	struct {
2262306a36Sopenharmony_ci		__u64 begin;
2362306a36Sopenharmony_ci		__u64 end;
2462306a36Sopenharmony_ci	} range[0];
2562306a36Sopenharmony_ci};
2662306a36Sopenharmony_ci
2762306a36Sopenharmony_ci#define EPFS_IOCTL_MAGIC 0x71
2862306a36Sopenharmony_ci#define IOC_SET_ORIGIN_FD _IOW(EPFS_IOCTL_MAGIC, 1, __s32)
2962306a36Sopenharmony_ci#define IOC_SET_EPFS_RANGE _IOW(EPFS_IOCTL_MAGIC, 2, struct epfs_range)
3062306a36Sopenharmony_ci#define EPFS_IOCTL_MAXNR 3
3162306a36Sopenharmony_ci
3262306a36Sopenharmony_ci#define EPFS_TAG "Epfs"
3362306a36Sopenharmony_ci
3462306a36Sopenharmony_ci#define epfs_err(fmt, ...)						\
3562306a36Sopenharmony_ci	pr_err("%s:%s:%d: " fmt, EPFS_TAG, __func__, __LINE__, ##__VA_ARGS__)
3662306a36Sopenharmony_ci#define epfs_info(fmt, ...)						\
3762306a36Sopenharmony_ci	pr_info("%s:%s:%d: " fmt, EPFS_TAG, __func__, __LINE__, ##__VA_ARGS__)
3862306a36Sopenharmony_ci#define epfs_warn(fmt, ...)						\
3962306a36Sopenharmony_ci	pr_warn("%s:%s:%d: " fmt, EPFS_TAG, __func__, __LINE__, ##__VA_ARGS__)
4062306a36Sopenharmony_ci#define epfs_debug(fmt, ...)						\
4162306a36Sopenharmony_ci	pr_debug("%s:%s:%d: " fmt, EPFS_TAG, __func__, __LINE__, ##__VA_ARGS__)
4262306a36Sopenharmony_ci
4362306a36Sopenharmony_ci#endif // __FS_EPFS_H__
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