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
32struct input_event_compat {
33	struct compat_timeval time;
 
34	__u16 type;
35	__u16 code;
36	__s32 value;
37};
38
39struct 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
52struct 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
68static inline size_t input_event_size(void)
69{
70	return INPUT_COMPAT_TEST ?
71		sizeof(struct input_event_compat) : sizeof(struct input_event);
72}
73
74#else
75
76static inline size_t input_event_size(void)
77{
78	return sizeof(struct input_event);
79}
80
81#endif /* CONFIG_COMPAT */
82
83int input_event_from_user(const char __user *buffer,
84			 struct input_event *event);
85
86int input_event_to_user(char __user *buffer,
87			const struct input_event *event);
88
89int input_ff_effect_from_user(const char __user *buffer, size_t size,
90			      struct ff_effect *effect);
91
92#endif /* _INPUT_COMPAT_H */

 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 */