1 #ifndef _INPUT_COMPAT_H 2 #define _INPUT_COMPAT_H 3 4 /* 5 * 32bit compatibility wrappers for the input subsystem. 6 * 7 * Very heavily based on evdev.c - Copyright (c) 1999-2002 Vojtech Pavlik 8 * 9 * This program is free software; you can redistribute it and/or modify it 10 * under the terms of the GNU General Public License version 2 as published by 11 * the Free Software Foundation. 12 */ 13 14 #include <linux/compiler.h> 15 #include <linux/compat.h> 16 #include <linux/input.h> 17 18 #ifdef CONFIG_COMPAT 19 20 struct input_event_compat { 21 struct compat_timeval time; 22 __u16 type; 23 __u16 code; 24 __s32 value; 25 }; 26 27 struct ff_periodic_effect_compat { 28 __u16 waveform; 29 __u16 period; 30 __s16 magnitude; 31 __s16 offset; 32 __u16 phase; 33 34 struct ff_envelope envelope; 35 36 __u32 custom_len; 37 compat_uptr_t custom_data; 38 }; 39 40 struct ff_effect_compat { 41 __u16 type; 42 __s16 id; 43 __u16 direction; 44 struct ff_trigger trigger; 45 struct ff_replay replay; 46 47 union { 48 struct ff_constant_effect constant; 49 struct ff_ramp_effect ramp; 50 struct ff_periodic_effect_compat periodic; 51 struct ff_condition_effect condition[2]; /* One for each axis */ 52 struct ff_rumble_effect rumble; 53 } u; 54 }; 55 56 static inline size_t input_event_size(void) 57 { 58 return (in_compat_syscall() && !COMPAT_USE_64BIT_TIME) ? 59 sizeof(struct input_event_compat) : sizeof(struct input_event); 60 } 61 62 #else 63 64 static inline size_t input_event_size(void) 65 { 66 return sizeof(struct input_event); 67 } 68 69 #endif /* CONFIG_COMPAT */ 70 71 int input_event_from_user(const char __user *buffer, 72 struct input_event *event); 73 74 int input_event_to_user(char __user *buffer, 75 const struct input_event *event); 76 77 int input_ff_effect_from_user(const char __user *buffer, size_t size, 78 struct ff_effect *effect); 79 80 #endif /* _INPUT_COMPAT_H */ 81