mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 15:42:44 +00:00
38 lines
1.4 KiB
C++
38 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 ErrorOr<NonnullRefPtr<AnonymousFile>> try_create(NonnullRefPtr<Memory::AnonymousVMObject> vmobject)
|
|
{
|
|
return adopt_nonnull_ref_or_enomem(new (nothrow) AnonymousFile(move(vmobject)));
|
|
}
|
|
|
|
virtual ~AnonymousFile() override;
|
|
|
|
virtual ErrorOr<Memory::Region*> mmap(Process&, OpenFileDescription&, Memory::VirtualRange const&, u64 offset, int prot, bool shared) override;
|
|
|
|
private:
|
|
virtual StringView class_name() const override { return "AnonymousFile"sv; }
|
|
virtual ErrorOr<NonnullOwnPtr<KString>> pseudo_path(OpenFileDescription const&) const override;
|
|
virtual bool can_read(OpenFileDescription const&, u64) const override { return false; }
|
|
virtual bool can_write(OpenFileDescription const&, u64) const override { return false; }
|
|
virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override { return ENOTSUP; }
|
|
virtual ErrorOr<size_t> write(OpenFileDescription&, u64, UserOrKernelBuffer const&, size_t) override { return ENOTSUP; }
|
|
|
|
explicit AnonymousFile(NonnullRefPtr<Memory::AnonymousVMObject>);
|
|
|
|
NonnullRefPtr<Memory::AnonymousVMObject> m_vmobject;
|
|
};
|
|
|
|
}
|