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79fa9765ca
We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace! This was a slightly tedious refactoring that took a long time, so it's not unlikely that some bugs crept in. Nevertheless, it does pass basic functionality testing, and it's just real nice to finally see the same pattern in all contexts. :^)
56 lines
1.6 KiB
C++
56 lines
1.6 KiB
C++
/*
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* Copyright (c) 2018-2021, 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/FileSystem/InodeIdentifier.h>
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#include <Kernel/TTY/TTY.h>
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namespace Kernel {
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class MasterPTY;
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class SlavePTY final : public TTY {
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public:
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virtual bool unref() const override;
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virtual ~SlavePTY() override;
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void on_master_write(const UserOrKernelBuffer&, size_t);
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unsigned index() const { return m_index; }
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time_t time_of_last_write() const { return m_time_of_last_write; }
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virtual FileBlockerSet& blocker_set() override;
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private:
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// ^TTY
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virtual KString const& tty_name() const override;
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virtual ErrorOr<size_t> on_tty_write(const UserOrKernelBuffer&, size_t) override;
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virtual void echo(u8) override;
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// ^CharacterDevice
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virtual bool can_read(const OpenFileDescription&, size_t) const override;
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virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
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virtual bool can_write(const OpenFileDescription&, size_t) const override;
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virtual StringView class_name() const override { return "SlavePTY"sv; }
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virtual ErrorOr<void> close() override;
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friend class MasterPTY;
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SlavePTY(MasterPTY&, unsigned index, NonnullOwnPtr<KString> pts_name);
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RefPtr<MasterPTY> m_master;
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time_t m_time_of_last_write { 0 };
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unsigned m_index { 0 };
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NonnullOwnPtr<KString> m_tty_name;
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mutable IntrusiveListNode<SlavePTY> m_list_node;
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public:
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using List = IntrusiveList<&SlavePTY::m_list_node>;
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static SpinlockProtected<SlavePTY::List>& all_instances();
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};
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}
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