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 /* Note to the author of this code: did it ever occur to 21 you why the ifdefs are needed? Think about it again. -AK */ 22 #if defined(CONFIG_X86_64) || defined(CONFIG_TILE) 23 # define INPUT_COMPAT_TEST is_compat_task() 24 #elif defined(CONFIG_S390) 25 # define INPUT_COMPAT_TEST test_thread_flag(TIF_31BIT) 26 #elif defined(CONFIG_MIPS) 27 # define INPUT_COMPAT_TEST test_thread_flag(TIF_32BIT_ADDR) 28 #else 29 # define INPUT_COMPAT_TEST test_thread_flag(TIF_32BIT) 30 #endif 31 32 struct input_event_compat { 33 struct compat_timeval time; 34 __u16 type; 35 __u16 code; 36 __s32 value; 37 }; 38 39 struct ff_periodic_effect_compat { 40 __u16 waveform; 41 __u16 period; 42 __s16 magnitude; 43 __s16 offset; 44 __u16 phase; 45 46 struct ff_envelope envelope; 47 48 __u32 custom_len; 49 compat_uptr_t custom_data; 50 }; 51 52 struct ff_effect_compat { 53 __u16 type; 54 __s16 id; 55 __u16 direction; 56 struct ff_trigger trigger; 57 struct ff_replay replay; 58 59 union { 60 struct ff_constant_effect constant; 61 struct ff_ramp_effect ramp; 62 struct ff_periodic_effect_compat periodic; 63 struct ff_condition_effect condition[2]; /* One for each axis */ 64 struct ff_rumble_effect rumble; 65 } u; 66 }; 67 68 static inline size_t input_event_size(void) 69 { 70 return (INPUT_COMPAT_TEST && !COMPAT_USE_64BIT_TIME) ? 71 sizeof(struct input_event_compat) : sizeof(struct input_event); 72 } 73 74 #else 75 76 static inline size_t input_event_size(void) 77 { 78 return sizeof(struct input_event); 79 } 80 81 #endif /* CONFIG_COMPAT */ 82 83 int input_event_from_user(const char __user *buffer, 84 struct input_event *event); 85 86 int input_event_to_user(char __user *buffer, 87 const struct input_event *event); 88 89 int input_ff_effect_from_user(const char __user *buffer, size_t size, 90 struct ff_effect *effect); 91 92 #endif /* _INPUT_COMPAT_H */ 93