ladybird/Kernel/FileSystem/InodeIdentifier.h
2022-04-01 21:24:45 +01:00

62 lines
1.4 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/ByteBuffer.h>
#include <AK/DistinctNumeric.h>
#include <AK/Types.h>
namespace Kernel {
class FileSystem;
struct InodeMetadata;
TYPEDEF_DISTINCT_ORDERED_ID(u32, FileSystemID);
TYPEDEF_DISTINCT_ORDERED_ID(u64, InodeIndex);
class InodeIdentifier {
public:
InodeIdentifier() = default;
InodeIdentifier(FileSystemID fsid, InodeIndex inode)
: m_fsid(fsid)
, m_index(inode)
{
}
bool is_valid() const { return m_fsid != 0 && m_index != 0; }
FileSystemID fsid() const { return m_fsid; }
InodeIndex index() const { return m_index; }
FileSystem* fs();
FileSystem const* fs() const;
bool operator==(InodeIdentifier const& other) const
{
return m_fsid == other.m_fsid && m_index == other.m_index;
}
bool operator!=(InodeIdentifier const& other) const
{
return m_fsid != other.m_fsid || m_index != other.m_index;
}
private:
FileSystemID m_fsid { 0 };
InodeIndex m_index { 0 };
};
}
template<>
struct AK::Formatter<Kernel::InodeIdentifier> : AK::Formatter<FormatString> {
ErrorOr<void> format(FormatBuilder& builder, Kernel::InodeIdentifier value)
{
return AK::Formatter<FormatString>::format(builder, "{}:{}", value.fsid(), value.index());
}
};