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1/* SPDX-License-Identifier: GPL-2.0-only */2#ifndef _INPUT_COMPAT_H3#define _INPUT_COMPAT_H4 5/*6 * 32bit compatibility wrappers for the input subsystem.7 *8 * Very heavily based on evdev.c - Copyright (c) 1999-2002 Vojtech Pavlik9 */10 11#include <linux/compiler.h>12#include <linux/compat.h>13#include <linux/input.h>14 15#ifdef CONFIG_COMPAT16 17struct input_event_compat {18 compat_ulong_t sec;19 compat_ulong_t usec;20 __u16 type;21 __u16 code;22 __s32 value;23};24 25struct ff_periodic_effect_compat {26 __u16 waveform;27 __u16 period;28 __s16 magnitude;29 __s16 offset;30 __u16 phase;31 32 struct ff_envelope envelope;33 34 __u32 custom_len;35 compat_uptr_t custom_data;36};37 38struct ff_effect_compat {39 __u16 type;40 __s16 id;41 __u16 direction;42 struct ff_trigger trigger;43 struct ff_replay replay;44 45 union {46 struct ff_constant_effect constant;47 struct ff_ramp_effect ramp;48 struct ff_periodic_effect_compat periodic;49 struct ff_condition_effect condition[2]; /* One for each axis */50 struct ff_rumble_effect rumble;51 } u;52};53 54static inline size_t input_event_size(void)55{56 return (in_compat_syscall() && !COMPAT_USE_64BIT_TIME) ?57 sizeof(struct input_event_compat) : sizeof(struct input_event);58}59 60#else61 62static inline size_t input_event_size(void)63{64 return sizeof(struct input_event);65}66 67#endif /* CONFIG_COMPAT */68 69int input_event_from_user(const char __user *buffer,70 struct input_event *event);71 72int input_event_to_user(char __user *buffer,73 const struct input_event *event);74 75int input_ff_effect_from_user(const char __user *buffer, size_t size,76 struct ff_effect *effect);77 78#endif /* _INPUT_COMPAT_H */79