LXR linux/drivers/input/input-compat.h

   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
  20struct input_event_compat {
  21        struct compat_timeval time;
  22        __u16 type;
  23        __u16 code;
  24        __s32 value;
  25};
  26
  27struct 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
  40struct 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
  56static 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
  64static inline size_t input_event_size(void)
  65{
  66        return sizeof(struct input_event);
  67}
  68
  69#endif /* CONFIG_COMPAT */
  70
  71int input_event_from_user(const char __user *buffer,
  72                         struct input_event *event);
  73
  74int input_event_to_user(char __user *buffer,
  75                        const struct input_event *event);
  76
  77int input_ff_effect_from_user(const char __user *buffer, size_t size,
  78                              struct ff_effect *effect);
  79
  80#endif /* _INPUT_COMPAT_H */
  81