Release 4.12 drivers/input/input-compat.c
/*
* 32bit compatibility wrappers for the input subsystem.
*
* Very heavily based on evdev.c - Copyright (c) 1999-2002 Vojtech Pavlik
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*/
#include <linux/export.h>
#include <linux/uaccess.h>
#include "input-compat.h"
#ifdef CONFIG_COMPAT
int input_event_from_user(const char __user *buffer,
struct input_event *event)
{
if (in_compat_syscall() && !COMPAT_USE_64BIT_TIME) {
struct input_event_compat compat_event;
if (copy_from_user(&compat_event, buffer,
sizeof(struct input_event_compat)))
return -EFAULT;
event->time.tv_sec = compat_event.time.tv_sec;
event->time.tv_usec = compat_event.time.tv_usec;
event->type = compat_event.type;
event->code = compat_event.code;
event->value = compat_event.value;
} else {
if (copy_from_user(event, buffer, sizeof(struct input_event)))
return -EFAULT;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Philip Langdale | 118 | 95.93% | 1 | 33.33% |
| H. J. Lu | 3 | 2.44% | 1 | 33.33% |
| Andrew Morton | 2 | 1.63% | 1 | 33.33% |
| Total | 123 | 100.00% | 3 | 100.00% |
int input_event_to_user(char __user *buffer,
const struct input_event *event)
{
if (in_compat_syscall() && !COMPAT_USE_64BIT_TIME) {
struct input_event_compat compat_event;
compat_event.time.tv_sec = event->time.tv_sec;
compat_event.time.tv_usec = event->time.tv_usec;
compat_event.type = event->type;
compat_event.code = event->code;
compat_event.value = event->value;
if (copy_to_user(buffer, &compat_event,
sizeof(struct input_event_compat)))
return -EFAULT;
} else {
if (copy_to_user(buffer, event, sizeof(struct input_event)))
return -EFAULT;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Philip Langdale | 118 | 95.93% | 1 | 33.33% |
| H. J. Lu | 3 | 2.44% | 1 | 33.33% |
| Andrew Morton | 2 | 1.63% | 1 | 33.33% |
| Total | 123 | 100.00% | 3 | 100.00% |
int input_ff_effect_from_user(const char __user *buffer, size_t size,
struct ff_effect *effect)
{
if (in_compat_syscall()) {
struct ff_effect_compat *compat_effect;
if (size != sizeof(struct ff_effect_compat))
return -EINVAL;
/*
* It so happens that the pointer which needs to be changed
* is the last field in the structure, so we can retrieve the
* whole thing and replace just the pointer.
*/
compat_effect = (struct ff_effect_compat *)effect;
if (copy_from_user(compat_effect, buffer,
sizeof(struct ff_effect_compat)))
return -EFAULT;
if (compat_effect->type == FF_PERIODIC &&
compat_effect->u.periodic.waveform == FF_CUSTOM)
effect->u.periodic.custom_data =
compat_ptr(compat_effect->u.periodic.custom_data);
} else {
if (size != sizeof(struct ff_effect))
return -EINVAL;
if (copy_from_user(effect, buffer, sizeof(struct ff_effect)))
return -EFAULT;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Philip Langdale | 148 | 98.67% | 1 | 50.00% |
| Andrew Morton | 2 | 1.33% | 1 | 50.00% |
| Total | 150 | 100.00% | 2 | 100.00% |
#else
int input_event_from_user(const char __user *buffer,
struct input_event *event)
{
if (copy_from_user(event, buffer, sizeof(struct input_event)))
return -EFAULT;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Philip Langdale | 38 | 100.00% | 1 | 100.00% |
| Total | 38 | 100.00% | 1 | 100.00% |
int input_event_to_user(char __user *buffer,
const struct input_event *event)
{
if (copy_to_user(buffer, event, sizeof(struct input_event)))
return -EFAULT;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Philip Langdale | 38 | 100.00% | 1 | 100.00% |
| Total | 38 | 100.00% | 1 | 100.00% |
int input_ff_effect_from_user(const char __user *buffer, size_t size,
struct ff_effect *effect)
{
if (size != sizeof(struct ff_effect))
return -EINVAL;
if (copy_from_user(effect, buffer, sizeof(struct ff_effect)))
return -EFAULT;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Philip Langdale | 55 | 100.00% | 1 | 100.00% |
| Total | 55 | 100.00% | 1 | 100.00% |
#endif /* CONFIG_COMPAT */
EXPORT_SYMBOL_GPL(input_event_from_user);
EXPORT_SYMBOL_GPL(input_event_to_user);
EXPORT_SYMBOL_GPL(input_ff_effect_from_user);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Philip Langdale | 544 | 97.14% | 1 | 20.00% |
| Andrew Morton | 6 | 1.07% | 1 | 20.00% |
| H. J. Lu | 6 | 1.07% | 1 | 20.00% |
| Paul Gortmaker | 3 | 0.54% | 1 | 20.00% |
| Linus Torvalds | 1 | 0.18% | 1 | 20.00% |
| Total | 560 | 100.00% | 5 | 100.00% |
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