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