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/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <Kernel/FileSystem/InodeIdentifier.h>
#include <Kernel/TTY/TTY.h>
namespace Kernel {
class MasterPTY;
class SlavePTY final : public TTY {
public:
virtual bool unref() const override;
virtual ~SlavePTY() override;
void on_master_write(const UserOrKernelBuffer&, size_t);
unsigned index() const { return m_index; }
time_t time_of_last_write() const { return m_time_of_last_write; }
virtual FileBlockerSet& blocker_set() override;
private:
// ^TTY
virtual String const& tty_name() const override;
virtual KResultOr<size_t> on_tty_write(const UserOrKernelBuffer&, size_t) override;
virtual void echo(u8) override;
// ^CharacterDevice
virtual bool can_read(const FileDescription&, size_t) const override;
virtual KResultOr<size_t> read(FileDescription&, u64, UserOrKernelBuffer&, size_t) override;
virtual bool can_write(const FileDescription&, size_t) const override;
virtual StringView class_name() const override { return "SlavePTY"; }
virtual KResult close() override;
// ^Device
virtual String device_name() const override;
friend class MasterPTY;
SlavePTY(MasterPTY&, unsigned index);
RefPtr<MasterPTY> m_master;
time_t m_time_of_last_write { 0 };
unsigned m_index { 0 };
String m_tty_name;
mutable IntrusiveListNode<SlavePTY> m_list_node;
public:
using List = IntrusiveList<SlavePTY, RawPtr<SlavePTY>, &SlavePTY::m_list_node>;
static SpinlockProtected<SlavePTY::List>& all_instances();
};
}
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