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https://github.com/SerenityOS/serenity
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16244c490a
We used to allocate major numbers quite randomly, with no common place to look them up if needed. This commit is changing that by placing all major number allocations under a new C++ namespace, in the API/MajorNumberAllocation.h file. We also add the foundations of what is needed before we can publish this information (allocated numbers for block and char devices) to userspace.
33 lines
1014 B
C++
33 lines
1014 B
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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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 <Kernel/API/MajorNumberAllocation.h>
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#include <Kernel/Devices/Device.h>
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namespace Kernel {
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class CharacterDevice : public Device {
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public:
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virtual ~CharacterDevice() override;
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protected:
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CharacterDevice(MajorAllocation::CharacterDeviceFamily character_device_family, MinorNumber minor);
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virtual void after_inserting_add_symlink_to_device_identifier_directory() override final;
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virtual void before_will_be_destroyed_remove_symlink_from_device_identifier_directory() override final;
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private:
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virtual bool is_character_device() const final { return true; }
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// FIXME: These methods will be eventually removed after all nodes in /sys/dev/char/ are symlinks
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virtual void after_inserting_add_to_device_identifier_directory() override final;
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virtual void before_will_be_destroyed_remove_from_device_identifier_directory() override final;
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};
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}
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