2 * 32bit compatibility wrappers for the input subsystem.
4 * Very heavily based on evdev.c - Copyright (c) 1999-2002 Vojtech Pavlik
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published by
8 * the Free Software Foundation.
11 #include <asm/uaccess.h>
12 #include "input-compat.h"
16 int input_event_from_user(const char __user *buffer,
17 struct input_event *event)
19 if (INPUT_COMPAT_TEST) {
20 struct input_event_compat compat_event;
22 if (copy_from_user(&compat_event, buffer,
23 sizeof(struct input_event_compat)))
26 event->time.tv_sec = compat_event.time.tv_sec;
27 event->time.tv_usec = compat_event.time.tv_usec;
28 event->type = compat_event.type;
29 event->code = compat_event.code;
30 event->value = compat_event.value;
33 if (copy_from_user(event, buffer, sizeof(struct input_event)))
40 int input_event_to_user(char __user *buffer,
41 const struct input_event *event)
43 if (INPUT_COMPAT_TEST) {
44 struct input_event_compat compat_event;
46 compat_event.time.tv_sec = event->time.tv_sec;
47 compat_event.time.tv_usec = event->time.tv_usec;
48 compat_event.type = event->type;
49 compat_event.code = event->code;
50 compat_event.value = event->value;
52 if (copy_to_user(buffer, &compat_event,
53 sizeof(struct input_event_compat)))
57 if (copy_to_user(buffer, event, sizeof(struct input_event)))
64 int input_ff_effect_from_user(const char __user *buffer, size_t size,
65 struct ff_effect *effect)
67 if (INPUT_COMPAT_TEST) {
68 struct ff_effect_compat *compat_effect;
70 if (size != sizeof(struct ff_effect_compat))
74 * It so happens that the pointer which needs to be changed
75 * is the last field in the structure, so we can retrieve the
76 * whole thing and replace just the pointer.
78 compat_effect = (struct ff_effect_compat *)effect;
80 if (copy_from_user(compat_effect, buffer,
81 sizeof(struct ff_effect_compat)))
84 if (compat_effect->type == FF_PERIODIC &&
85 compat_effect->u.periodic.waveform == FF_CUSTOM)
86 effect->u.periodic.custom_data =
87 compat_ptr(compat_effect->u.periodic.custom_data);
89 if (size != sizeof(struct ff_effect))
92 if (copy_from_user(effect, buffer, sizeof(struct ff_effect)))
101 int input_event_from_user(const char __user *buffer,
102 struct input_event *event)
104 if (copy_from_user(event, buffer, sizeof(struct input_event)))
110 int input_event_to_user(char __user *buffer,
111 const struct input_event *event)
113 if (copy_to_user(buffer, event, sizeof(struct input_event)))
119 int input_ff_effect_from_user(const char __user *buffer, size_t size,
120 struct ff_effect *effect)
122 if (size != sizeof(struct ff_effect))
125 if (copy_from_user(effect, buffer, sizeof(struct ff_effect)))
131 #endif /* CONFIG_COMPAT */
133 EXPORT_SYMBOL_GPL(input_event_from_user);
134 EXPORT_SYMBOL_GPL(input_event_to_user);
135 EXPORT_SYMBOL_GPL(input_ff_effect_from_user);