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Kernel: Add keyboard ioctl to get num/caps lock state

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This commit is contained in:
Edwin Hoksberg 2021-07-05 21:14:38 +02:00 • committed by Gunnar Beutner
parent 864b50b5c2
commit 385e2ccb66
3 changed files with 47 additions and 0 deletions
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34
Kernel/Devices/HID/KeyboardDevice.cpp
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@ -1,6 +1,7 @@
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
* Copyright (c) 2021, Edwin Hoksberg <mail@edwinhoksberg.nl>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -15,6 +16,7 @@
#include <Kernel/IO.h>
#include <Kernel/Sections.h>
#include <Kernel/TTY/VirtualConsole.h>
#include <LibC/sys/ioctl_numbers.h>
namespace Kernel {
@ -314,4 +316,36 @@ KResultOr<size_t> KeyboardDevice::write(FileDescription&, u64, const UserOrKerne
return 0;
}
int KeyboardDevice::ioctl(FileDescription&, unsigned request, FlatPtr arg)
{
switch (request) {
case KEYBOARD_IOCTL_GET_NUM_LOCK: {
auto* output = (bool*)arg;
if (!copy_to_user(output, &m_num_lock_on))
return -EFAULT;
return 0;
}
case KEYBOARD_IOCTL_SET_NUM_LOCK: {
if (arg != 0 && arg != 1)
return -EINVAL;
m_num_lock_on = arg;
return 0;
}
case KEYBOARD_IOCTL_GET_CAPS_LOCK: {
auto* output = (bool*)arg;
if (!copy_to_user(output, &m_caps_lock_on))
return -EFAULT;
return 0;
}
case KEYBOARD_IOCTL_SET_CAPS_LOCK: {
if (arg != 0 && arg != 1)
return -EINVAL;
m_caps_lock_on = arg;
return 0;
}
default:
return -EINVAL;
};
}
}

4
Kernel/Devices/HID/KeyboardDevice.h
View file

@ -1,5 +1,6 @@
/*
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
* Copyright (c) 2021, Edwin Hoksberg <mail@edwinhoksberg.nl>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -35,6 +36,9 @@ public:
// ^Device
virtual mode_t required_mode() const override { return 0440; }
// ^File
virtual int ioctl(FileDescription&, unsigned request, FlatPtr arg) override;
virtual String device_name() const override { return String::formatted("keyboard{}", minor()); }
void update_modifier(u8 modifier, bool state)