mirror of
https://github.com/RGBCube/serenity
synced 2025-07-06 18:17:35 +00:00
b5ef900ccd
The obsolete ttyname and ptsname syscalls are removed. LibC doesn't rely on these anymore, and it helps simplifying the Kernel in many places, so it's an overall an improvement. In addition to that, /proc/PID/tty node is removed too as it is not needed anymore by userspace to get the attached TTY of a process, as /dev/tty (which is already a character device) represents that as well.
48 lines
1.6 KiB
C++
48 lines
1.6 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/DoubleBuffer.h>
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namespace Kernel {
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class SlavePTY;
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class MasterPTY final : public CharacterDevice {
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public:
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static ErrorOr<NonnullRefPtr<MasterPTY>> try_create(unsigned index);
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virtual ~MasterPTY() override;
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unsigned index() const { return m_index; }
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ErrorOr<size_t> on_slave_write(const UserOrKernelBuffer&, size_t);
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bool can_write_from_slave() const;
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void notify_slave_closed(Badge<SlavePTY>);
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bool is_closed() const { return m_closed; }
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virtual ErrorOr<NonnullOwnPtr<KString>> pseudo_path(const OpenFileDescription&) const override;
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private:
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explicit MasterPTY(unsigned index, NonnullOwnPtr<DoubleBuffer> buffer);
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// ^CharacterDevice
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virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
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virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
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virtual bool can_read(const OpenFileDescription&, u64) const override;
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virtual bool can_write(const OpenFileDescription&, u64) const override;
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virtual ErrorOr<void> close() override;
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virtual bool is_master_pty() const override { return true; }
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virtual ErrorOr<void> ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg) override;
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virtual StringView class_name() const override { return "MasterPTY"sv; }
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RefPtr<SlavePTY> m_slave;
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unsigned m_index;
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bool m_closed { false };
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NonnullOwnPtr<DoubleBuffer> m_buffer;
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};
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}
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