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/drivers/input/input-compat.h

http://github.com/mirrors/linux
C Header | 78 lines | 55 code | 17 blank | 6 comment | 1 complexity | fded827f32250997ca03a1963bceaf2e MD5 | raw file
 1/* SPDX-License-Identifier: GPL-2.0-only */
 2#ifndef _INPUT_COMPAT_H
 3#define _INPUT_COMPAT_H
 4
 5/*
 6 * 32bit compatibility wrappers for the input subsystem.
 7 *
 8 * Very heavily based on evdev.c - Copyright (c) 1999-2002 Vojtech Pavlik
 9 */
10
11#include <linux/compiler.h>
12#include <linux/compat.h>
13#include <linux/input.h>
14
15#ifdef CONFIG_COMPAT
16
17struct input_event_compat {
18	compat_ulong_t sec;
19	compat_ulong_t usec;
20	__u16 type;
21	__u16 code;
22	__s32 value;
23};
24
25struct ff_periodic_effect_compat {
26	__u16 waveform;
27	__u16 period;
28	__s16 magnitude;
29	__s16 offset;
30	__u16 phase;
31
32	struct ff_envelope envelope;
33
34	__u32 custom_len;
35	compat_uptr_t custom_data;
36};
37
38struct ff_effect_compat {
39	__u16 type;
40	__s16 id;
41	__u16 direction;
42	struct ff_trigger trigger;
43	struct ff_replay replay;
44
45	union {
46		struct ff_constant_effect constant;
47		struct ff_ramp_effect ramp;
48		struct ff_periodic_effect_compat periodic;
49		struct ff_condition_effect condition[2]; /* One for each axis */
50		struct ff_rumble_effect rumble;
51	} u;
52};
53
54static inline size_t input_event_size(void)
55{
56	return (in_compat_syscall() && !COMPAT_USE_64BIT_TIME) ?
57		sizeof(struct input_event_compat) : sizeof(struct input_event);
58}
59
60#else
61
62static inline size_t input_event_size(void)
63{
64	return sizeof(struct input_event);
65}
66
67#endif /* CONFIG_COMPAT */
68
69int input_event_from_user(const char __user *buffer,
70			 struct input_event *event);
71
72int input_event_to_user(char __user *buffer,
73			const struct input_event *event);
74
75int input_ff_effect_from_user(const char __user *buffer, size_t size,
76			      struct ff_effect *effect);
77
78#endif /* _INPUT_COMPAT_H */