1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 #ifndef _INPUT_COMPAT_H 3 #define _INPUT_COMPAT_H 4 5 /* 6 * 32bit compatibility wrappers for the input subsystem. 7 * 8 * Very heavily based on evdev.c - Copyright (c) 1999-2002 Vojtech Pavlik 9 */ 10 11 #include <linux/compiler.h> 12 #include <linux/compat.h> 13 #include <linux/input.h> 14 15 #ifdef CONFIG_COMPAT 16 17 struct input_event_compat { 18 compat_ulong_t sec; 19 compat_ulong_t usec; 20 __u16 type; 21 __u16 code; 22 __s32 value; 23 }; 24 25 struct 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 38 struct 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 54 static 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 #else 61 62 static inline size_t input_event_size(void) 63 { 64 return sizeof(struct input_event); 65 } 66 67 #endif /* CONFIG_COMPAT */ 68 69 int input_event_from_user(const char __user *buffer, 70 struct input_event *event); 71 72 int input_event_to_user(char __user *buffer, 73 const struct input_event *event); 74 75 int input_ff_effect_from_user(const char __user *buffer, size_t size, 76 struct ff_effect *effect); 77 78 #endif /* _INPUT_COMPAT_H */ 79