| Philip Langdale | 2d56f3a | 2008-10-16 22:31:42 -0400 | [diff] [blame] | 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 | #ifdef CONFIG_X86_64 |
| 23 | # define INPUT_COMPAT_TEST is_compat_task() |
| 24 | #elif defined(CONFIG_IA64) |
| 25 | # define INPUT_COMPAT_TEST IS_IA32_PROCESS(task_pt_regs(current)) |
| 26 | #elif defined(CONFIG_S390) |
| 27 | # define INPUT_COMPAT_TEST test_thread_flag(TIF_31BIT) |
| 28 | #elif defined(CONFIG_MIPS) |
| 29 | # define INPUT_COMPAT_TEST test_thread_flag(TIF_32BIT_ADDR) |
| 30 | #else |
| 31 | # define INPUT_COMPAT_TEST test_thread_flag(TIF_32BIT) |
| 32 | #endif |
| 33 | |
| 34 | struct input_event_compat { |
| 35 | struct compat_timeval time; |
| 36 | __u16 type; |
| 37 | __u16 code; |
| 38 | __s32 value; |
| 39 | }; |
| 40 | |
| 41 | struct ff_periodic_effect_compat { |
| 42 | __u16 waveform; |
| 43 | __u16 period; |
| 44 | __s16 magnitude; |
| 45 | __s16 offset; |
| 46 | __u16 phase; |
| 47 | |
| 48 | struct ff_envelope envelope; |
| 49 | |
| 50 | __u32 custom_len; |
| 51 | compat_uptr_t custom_data; |
| 52 | }; |
| 53 | |
| 54 | struct ff_effect_compat { |
| 55 | __u16 type; |
| 56 | __s16 id; |
| 57 | __u16 direction; |
| 58 | struct ff_trigger trigger; |
| 59 | struct ff_replay replay; |
| 60 | |
| 61 | union { |
| 62 | struct ff_constant_effect constant; |
| 63 | struct ff_ramp_effect ramp; |
| 64 | struct ff_periodic_effect_compat periodic; |
| 65 | struct ff_condition_effect condition[2]; /* One for each axis */ |
| 66 | struct ff_rumble_effect rumble; |
| 67 | } u; |
| 68 | }; |
| 69 | |
| 70 | static inline size_t input_event_size(void) |
| 71 | { |
| 72 | return INPUT_COMPAT_TEST ? |
| 73 | sizeof(struct input_event_compat) : sizeof(struct input_event); |
| 74 | } |
| 75 | |
| 76 | #else |
| 77 | |
| 78 | static inline size_t input_event_size(void) |
| 79 | { |
| 80 | return sizeof(struct input_event); |
| 81 | } |
| 82 | |
| 83 | #endif /* CONFIG_COMPAT */ |
| 84 | |
| 85 | int input_event_from_user(const char __user *buffer, |
| 86 | struct input_event *event); |
| 87 | |
| 88 | int input_event_to_user(char __user *buffer, |
| 89 | const struct input_event *event); |
| 90 | |
| 91 | int input_ff_effect_from_user(const char __user *buffer, size_t size, |
| 92 | struct ff_effect *effect); |
| 93 | |
| 94 | #endif /* _INPUT_COMPAT_H */ |