[linux.git] / drivers / input / input-compat.h

/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _INPUT_COMPAT_H
#define _INPUT_COMPAT_H

/*
 * 32bit compatibility wrappers for the input subsystem.
 *
 * Very heavily based on evdev.c - Copyright (c) 1999-2002 Vojtech Pavlik
 */

#include <linux/compiler.h>
#include <linux/compat.h>
#include <linux/input.h>

#ifdef CONFIG_COMPAT

struct input_event_compat {
	compat_ulong_t sec;
	compat_ulong_t usec;
	__u16 type;
	__u16 code;
	__s32 value;
};

struct ff_periodic_effect_compat {
	__u16 waveform;
	__u16 period;
	__s16 magnitude;
	__s16 offset;
	__u16 phase;

	struct ff_envelope envelope;

	__u32 custom_len;
	compat_uptr_t custom_data;
};

struct ff_effect_compat {
	__u16 type;
	__s16 id;
	__u16 direction;
	struct ff_trigger trigger;
	struct ff_replay replay;

	union {
		struct ff_constant_effect constant;
		struct ff_ramp_effect ramp;
		struct ff_periodic_effect_compat periodic;
		struct ff_condition_effect condition[2]; /* One for each axis */
		struct ff_rumble_effect rumble;
	} u;
};

static inline size_t input_event_size(void)
{
	return (in_compat_syscall() && !COMPAT_USE_64BIT_TIME) ?
		sizeof(struct input_event_compat) : sizeof(struct input_event);
}

#else

static inline size_t input_event_size(void)
{
	return sizeof(struct input_event);
}

#endif /* CONFIG_COMPAT */

int input_event_from_user(const char __user *buffer,
			 struct input_event *event);

int input_event_to_user(char __user *buffer,
			const struct input_event *event);

int input_ff_effect_from_user(const char __user *buffer, size_t size,
			      struct ff_effect *effect);

#endif /* _INPUT_COMPAT_H */
Commit	Line	Data
d2912cb1	1	/* SPDX-License-Identifier: GPL-2.0-only */
2d56f3a3 PL	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
2d56f3a3 PL	9	*/
	10
	11	#include <linux/compiler.h>
	12	#include <linux/compat.h>
	13	#include <linux/input.h>
	14
	15	#ifdef CONFIG_COMPAT
	16
2d56f3a3	17	struct input_event_compat {
152194fe DD	18	compat_ulong_t sec;
152194fe DD	19	compat_ulong_t usec;
2d56f3a3 PL	20	__u16 type;
	21	__u16 code;
	22	__s32 value;
	23	};
	24
	25	struct 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
	38	struct 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
	54	static inline size_t input_event_size(void)
	55	{
b8b4ead1	56	return (in_compat_syscall() && !COMPAT_USE_64BIT_TIME) ?
2d56f3a3 PL	57	sizeof(struct input_event_compat) : sizeof(struct input_event);
	58	}
	59
	60	#else
	61
	62	static inline size_t input_event_size(void)
	63	{
	64	return sizeof(struct input_event);
	65	}
	66
	67	#endif /* CONFIG_COMPAT */
	68
	69	int input_event_from_user(const char __user *buffer,
	70	struct input_event *event);
	71
	72	int input_event_to_user(char __user *buffer,
	73	const struct input_event *event);
	74
	75	int input_ff_effect_from_user(const char __user *buffer, size_t size,
	76	struct ff_effect *effect);
	77
	78	#endif /* _INPUT_COMPAT_H */