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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/ByteBuffer.h>
#include <AK/String.h>
#include <AK/Types.h>
namespace Kernel {
class FS;
struct InodeMetadata;
class InodeIdentifier {
public:
InodeIdentifier() { }
InodeIdentifier(u32 fsid, u32 inode)
: m_fsid(fsid)
, m_index(inode)
{
}
bool is_valid() const { return m_fsid != 0 && m_index != 0; }
u32 fsid() const { return m_fsid; }
u32 index() const { return m_index; }
FS* fs();
const FS* fs() const;
bool operator==(const InodeIdentifier& other) const
{
return m_fsid == other.m_fsid && m_index == other.m_index;
}
bool operator!=(const InodeIdentifier& other) const
{
return m_fsid != other.m_fsid || m_index != other.m_index;
}
String to_string() const { return String::format("%u:%u", m_fsid, m_index); }
private:
u32 m_fsid { 0 };
u32 m_index { 0 };
};
inline const LogStream& operator<<(const LogStream& stream, const InodeIdentifier& value)
{
stream << value.fsid() << ':' << value.index();
return stream;
}
}
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