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https://github.com/RGBCube/serenity
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234c6ae32d
The error handling in all these cases was still using the old style negative values to indicate errors. We have a nicer solution for this now with KResultOr<T>. This change switches the interface and then all implementers to use the new style.
67 lines
2 KiB
C++
67 lines
2 KiB
C++
/*
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* Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@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/Types.h>
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#include <Kernel/FileSystem/FileSystem.h>
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#include <Kernel/FileSystem/Inode.h>
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namespace Kernel {
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class SlavePTY;
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class DevPtsFSInode;
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class DevPtsFS final : public FS {
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friend class DevPtsFSInode;
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public:
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virtual ~DevPtsFS() override;
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static NonnullRefPtr<DevPtsFS> create();
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virtual bool initialize() override;
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virtual const char* class_name() const override { return "DevPtsFS"; }
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virtual NonnullRefPtr<Inode> root_inode() const override;
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static void register_slave_pty(SlavePTY&);
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static void unregister_slave_pty(SlavePTY&);
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private:
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DevPtsFS();
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RefPtr<Inode> get_inode(InodeIdentifier) const;
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RefPtr<DevPtsFSInode> m_root_inode;
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};
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class DevPtsFSInode final : public Inode {
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friend class DevPtsFS;
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public:
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virtual ~DevPtsFSInode() override;
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private:
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DevPtsFSInode(DevPtsFS&, InodeIndex, SlavePTY*);
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// ^Inode
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virtual KResultOr<ssize_t> read_bytes(off_t, ssize_t, UserOrKernelBuffer& buffer, FileDescription*) const override;
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virtual InodeMetadata metadata() const override;
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virtual KResult traverse_as_directory(Function<bool(const FS::DirectoryEntryView&)>) const override;
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virtual RefPtr<Inode> lookup(StringView name) override;
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virtual void flush_metadata() override;
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virtual KResultOr<ssize_t> write_bytes(off_t, ssize_t, const UserOrKernelBuffer& buffer, FileDescription*) override;
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virtual KResultOr<NonnullRefPtr<Inode>> create_child(const String& name, mode_t, dev_t, uid_t, gid_t) override;
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virtual KResult add_child(Inode&, const StringView& name, mode_t) override;
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virtual KResult remove_child(const StringView& name) override;
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virtual KResultOr<size_t> directory_entry_count() const override;
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virtual KResult chmod(mode_t) override;
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virtual KResult chown(uid_t, gid_t) override;
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WeakPtr<SlavePTY> m_pty;
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InodeMetadata m_metadata;
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};
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}
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