ladybird/Kernel/Memory/SharedInodeVMObject.h

36 lines
1.1 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <Kernel/Memory/InodeVMObject.h>
#include <Kernel/UnixTypes.h>
namespace Kernel::Memory {
class SharedInodeVMObject final : public InodeVMObject {
AK_MAKE_NONMOVABLE(SharedInodeVMObject);
public:
static ErrorOr<NonnullLockRefPtr<SharedInodeVMObject>> try_create_with_inode(Inode&);
static ErrorOr<NonnullLockRefPtr<SharedInodeVMObject>> try_create_with_inode_and_range(Inode&, u64 offset, size_t range_size);
virtual ErrorOr<NonnullLockRefPtr<VMObject>> try_clone() override;
ErrorOr<void> sync(off_t offset_in_pages = 0, size_t pages = -1);
private:
virtual bool is_shared_inode() const override { return true; }
explicit SharedInodeVMObject(Inode&, FixedArray<RefPtr<PhysicalPage>>&&, Bitmap dirty_pages);
explicit SharedInodeVMObject(SharedInodeVMObject const&, FixedArray<RefPtr<PhysicalPage>>&&, Bitmap dirty_pages);
virtual StringView class_name() const override { return "SharedInodeVMObject"sv; }
SharedInodeVMObject& operator=(SharedInodeVMObject const&) = delete;
};
}