mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-11 19:07:15 +03:00
cd5faf4e42
...and also RangeAllocator => VirtualRangeAllocator. This clarifies that the ranges we're dealing with are *virtual* memory ranges and not anything else.
39 lines
1.4 KiB
C++
39 lines
1.4 KiB
C++
/*
|
|
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <Kernel/FileSystem/File.h>
|
|
#include <Kernel/Memory/AnonymousVMObject.h>
|
|
|
|
namespace Kernel {
|
|
|
|
class AnonymousFile final : public File {
|
|
public:
|
|
static RefPtr<AnonymousFile> create(NonnullRefPtr<Memory::AnonymousVMObject> vmobject)
|
|
{
|
|
return adopt_ref_if_nonnull(new (nothrow) AnonymousFile(move(vmobject)));
|
|
}
|
|
|
|
virtual ~AnonymousFile() override;
|
|
|
|
virtual KResultOr<Memory::Region*> mmap(Process&, FileDescription&, Memory::VirtualRange const&, u64 offset, int prot, bool shared) override;
|
|
|
|
private:
|
|
virtual StringView class_name() const override { return "AnonymousFile"; }
|
|
virtual String absolute_path(const FileDescription&) const override { return ":anonymous-file:"; }
|
|
virtual bool can_read(const FileDescription&, size_t) const override { return false; }
|
|
virtual bool can_write(const FileDescription&, size_t) const override { return false; }
|
|
virtual KResultOr<size_t> read(FileDescription&, u64, UserOrKernelBuffer&, size_t) override { return ENOTSUP; }
|
|
virtual KResultOr<size_t> write(FileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return ENOTSUP; }
|
|
|
|
explicit AnonymousFile(NonnullRefPtr<Memory::AnonymousVMObject>);
|
|
|
|
NonnullRefPtr<Memory::AnonymousVMObject> m_vmobject;
|
|
};
|
|
|
|
}
|