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 compat_ulong_t sec; 22 compat_ulong_t usec; 23 __u16 type; 24 __u16 code; 25 __s32 value; 26 }; 27 28 struct ff_periodic_effect_compat { 29 __u16 waveform; 30 __u16 period; 31 __s16 magnitude; 32 __s16 offset; 33 __u16 phase; 34 35 struct ff_envelope envelope; 36 37 __u32 custom_len; 38 compat_uptr_t custom_data; 39 }; 40 41 struct ff_effect_compat { 42 __u16 type; 43 __s16 id; 44 __u16 direction; 45 struct ff_trigger trigger; 46 struct ff_replay replay; 47 48 union { 49 struct ff_constant_effect constant; 50 struct ff_ramp_effect ramp; 51 struct ff_periodic_effect_compat periodic; 52 struct ff_condition_effect condition[2]; /* One for each axis */ 53 struct ff_rumble_effect rumble; 54 } u; 55 }; 56 57 static inline size_t input_event_size(void) 58 { 59 return (in_compat_syscall() && !COMPAT_USE_64BIT_TIME) ? 60 sizeof(struct input_event_compat) : sizeof(struct input_event); 61 } 62 63 #else 64 65 static inline size_t input_event_size(void) 66 { 67 return sizeof(struct input_event); 68 } 69 70 #endif /* CONFIG_COMPAT */ 71 72 int input_event_from_user(const char __user *buffer, 73 struct input_event *event); 74 75 int input_event_to_user(char __user *buffer, 76 const struct input_event *event); 77 78 int input_ff_effect_from_user(const char __user *buffer, size_t size, 79 struct ff_effect *effect); 80 81 #endif /* _INPUT_COMPAT_H */ 82