1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * fs/epfs/epfs.h 4 * 5 * Copyright (c) 2022 Huawei Technologies Co., Ltd. 6 * Author: weilongping@huawei.com 7 * Create: 2022-06-10 8 */ 9#ifndef __FS_EPFS_H__ 10#define __FS_EPFS_H__ 11 12#include <linux/ioctl.h> 13#include <linux/printk.h> 14#include <linux/types.h> 15 16#define EPFS_MAX_RANGES 127 17 18struct __attribute__((__packed__)) epfs_range { 19 __u64 num; 20 __u64 reserved; 21 struct { 22 __u64 begin; 23 __u64 end; 24 } range[0]; 25}; 26 27#define EPFS_IOCTL_MAGIC 0x71 28#define IOC_SET_ORIGIN_FD _IOW(EPFS_IOCTL_MAGIC, 1, __s32) 29#define IOC_SET_EPFS_RANGE _IOW(EPFS_IOCTL_MAGIC, 2, struct epfs_range) 30#define EPFS_IOCTL_MAXNR 3 31 32#define EPFS_TAG "Epfs" 33 34#define epfs_err(fmt, ...) \ 35 pr_err("%s:%s:%d: " fmt, EPFS_TAG, __func__, __LINE__, ##__VA_ARGS__) 36#define epfs_info(fmt, ...) \ 37 pr_info("%s:%s:%d: " fmt, EPFS_TAG, __func__, __LINE__, ##__VA_ARGS__) 38#define epfs_warn(fmt, ...) \ 39 pr_warn("%s:%s:%d: " fmt, EPFS_TAG, __func__, __LINE__, ##__VA_ARGS__) 40#define epfs_debug(fmt, ...) \ 41 pr_debug("%s:%s:%d: " fmt, EPFS_TAG, __func__, __LINE__, ##__VA_ARGS__) 42 43#endif // __FS_EPFS_H__ 44