From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/input/input-compat.c | 136 ++++++++++++++++++++++++++++++++++++ 1 file changed, 136 insertions(+) create mode 100644 kernel/drivers/input/input-compat.c (limited to 'kernel/drivers/input/input-compat.c') diff --git a/kernel/drivers/input/input-compat.c b/kernel/drivers/input/input-compat.c new file mode 100644 index 000000000..64ca7113f --- /dev/null +++ b/kernel/drivers/input/input-compat.c @@ -0,0 +1,136 @@ +/* + * 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 +#include +#include "input-compat.h" + +#ifdef CONFIG_COMPAT + +int input_event_from_user(const char __user *buffer, + struct input_event *event) +{ + if (INPUT_COMPAT_TEST && !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; +} + +int input_event_to_user(char __user *buffer, + const struct input_event *event) +{ + if (INPUT_COMPAT_TEST && !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; +} + +int input_ff_effect_from_user(const char __user *buffer, size_t size, + struct ff_effect *effect) +{ + if (INPUT_COMPAT_TEST) { + 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; +} + +#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; +} + +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; +} + +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; +} + +#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); -- cgit 1.2.3-korg