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https://github.com/RGBCube/serenity
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c6e23e45c5
Currently, writing anything to `/dev/mouse0` or `/dev/keyboard0` causes the Kernel to panic. The reason for this is that `[Mouse,Keyboard]Device::write` always returns 0, which is explicitly prohibited by `VERIFY` macro in `Process::sys$write`. The fix seems trivial; `write` should return EINVAL instead (as is the case with, for example, `KCOVDevice`).
64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
/*
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* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
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* Copyright (c) 2021, Edwin Hoksberg <mail@edwinhoksberg.nl>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/CircularQueue.h>
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#include <AK/DoublyLinkedList.h>
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#include <AK/Types.h>
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#include <Kernel/API/KeyCode.h>
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#include <Kernel/Devices/CharacterDevice.h>
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#include <Kernel/Devices/HID/HIDDevice.h>
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#include <Kernel/Interrupts/IRQHandler.h>
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#include <Kernel/Random.h>
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namespace Kernel {
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class KeyboardDevice : public HIDDevice {
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public:
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using Event = KeyEvent;
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virtual ~KeyboardDevice() override;
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// ^CharacterDevice
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virtual KResultOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
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virtual bool can_read(const OpenFileDescription&, size_t) const override;
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virtual KResultOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return EINVAL; }
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virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
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// ^HIDDevice
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virtual Type instrument_type() const override { return Type::Keyboard; }
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// ^File
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virtual KResult ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg) override;
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void update_modifier(u8 modifier, bool state)
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{
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if (state)
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m_modifiers |= modifier;
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else
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m_modifiers &= ~modifier;
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}
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protected:
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KeyboardDevice();
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mutable Spinlock m_queue_lock;
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CircularQueue<Event, 16> m_queue;
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// ^CharacterDevice
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virtual StringView class_name() const override { return "KeyboardDevice"; }
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u8 m_modifiers { 0 };
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bool m_caps_lock_to_ctrl_pressed { false };
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bool m_caps_lock_on { false };
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bool m_num_lock_on { false };
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bool m_has_e0_prefix { false };
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bool m_left_shift_pressed { false };
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bool m_right_shift_pressed { false };
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void key_state_changed(u8 raw, bool pressed);
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};
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}
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