mirror of
https://github.com/RGBCube/serenity
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11eee67b85
Until now, our kernel has reimplemented a number of AK classes to provide automatic internal locking: - RefPtr - NonnullRefPtr - WeakPtr - Weakable This patch renames the Kernel classes so that they can coexist with the original AK classes: - RefPtr => LockRefPtr - NonnullRefPtr => NonnullLockRefPtr - WeakPtr => LockWeakPtr - Weakable => LockWeakable The goal here is to eventually get rid of the Lock* classes in favor of using external locking.
38 lines
1.4 KiB
C++
38 lines
1.4 KiB
C++
/*
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* Copyright (c) 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/File.h>
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#include <Kernel/Memory/AnonymousVMObject.h>
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namespace Kernel {
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class AnonymousFile final : public File {
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public:
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static ErrorOr<NonnullLockRefPtr<AnonymousFile>> try_create(NonnullLockRefPtr<Memory::AnonymousVMObject> vmobject)
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{
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return adopt_nonnull_lock_ref_or_enomem(new (nothrow) AnonymousFile(move(vmobject)));
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}
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virtual ~AnonymousFile() override;
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virtual ErrorOr<Memory::Region*> mmap(Process&, OpenFileDescription&, Memory::VirtualRange const&, u64 offset, int prot, bool shared) override;
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private:
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virtual StringView class_name() const override { return "AnonymousFile"sv; }
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virtual ErrorOr<NonnullOwnPtr<KString>> pseudo_path(OpenFileDescription const&) const override;
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virtual bool can_read(OpenFileDescription const&, u64) const override { return false; }
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virtual bool can_write(OpenFileDescription const&, u64) const override { return false; }
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virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override { return ENOTSUP; }
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virtual ErrorOr<size_t> write(OpenFileDescription&, u64, UserOrKernelBuffer const&, size_t) override { return ENOTSUP; }
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explicit AnonymousFile(NonnullLockRefPtr<Memory::AnonymousVMObject>);
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NonnullLockRefPtr<Memory::AnonymousVMObject> m_vmobject;
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};
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}
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