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SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
50 lines
1.4 KiB
C++
50 lines
1.4 KiB
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 <AK/Badge.h>
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#include <Kernel/Devices/CharacterDevice.h>
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#include <Kernel/Lock.h>
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namespace Kernel {
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class MasterPTY;
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class PTYMultiplexer final : public CharacterDevice {
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AK_MAKE_ETERNAL
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public:
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PTYMultiplexer();
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virtual ~PTYMultiplexer() override;
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static void initialize()
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{
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the();
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}
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static PTYMultiplexer& the();
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// ^CharacterDevice
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virtual KResultOr<NonnullRefPtr<FileDescription>> open(int options) override;
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virtual KResultOr<size_t> read(FileDescription&, u64, UserOrKernelBuffer&, size_t) override { return 0; }
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virtual KResultOr<size_t> write(FileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return 0; }
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virtual bool can_read(const FileDescription&, size_t) const override { return true; }
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virtual bool can_write(const FileDescription&, size_t) const override { return true; }
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void notify_master_destroyed(Badge<MasterPTY>, unsigned index);
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// ^Device
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virtual mode_t required_mode() const override { return 0666; }
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virtual String device_name() const override { return "ptmx"; }
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private:
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// ^CharacterDevice
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virtual const char* class_name() const override { return "PTYMultiplexer"; }
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Lock m_lock { "PTYMultiplexer" };
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Vector<unsigned> m_freelist;
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};
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}
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