119 lines
2.4 KiB
C++
119 lines
2.4 KiB
C++
/******************************************************************************
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COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along
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with Sortix. If not, see <http://www.gnu.org/licenses/>.
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mxfs.h
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A working file system.
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******************************************************************************/
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#ifndef SORTIX_MXFS_H
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#define SORTIX_MXFS_H
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#include "stream.h"
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#include "filesystem.h"
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namespace Sortix
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{
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class DevMXFS;
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class DevMXFSFile;
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class MXFSNode;
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class DevMXFSFile : public DevBuffer
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{
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friend class DevMXFS;
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private:
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DevMXFSFile* _prevSibling;
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DevMXFSFile* _nextSibling;
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private:
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DevMXFS* _parent;
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private:
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intmax_t _beginning;
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intmax_t _size;
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public:
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virtual size_t Write(const void* buffer, size_t bufferSize) = 0;
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virtual size_t ReadSome(const void* buffer, size_t bufferSize) = 0;
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public:
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virtual size_t BlockSize() = 0;
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virtual intmax_t Size() = 0;
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virtual intmax_t Position() = 0;
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virtual bool Seek(intmax_t position) = 0;
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virtual bool Resize(intmax_t size) = 0;
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};
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class DevMXFS : public DevFileSystem
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{
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friend class DevMXFSFile;
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public:
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DevMXFS();
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virtual ~DevMXFS();
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public:
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virtual int Initialize(MountPoint* mountPoint, const char* commandLine);
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private:
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MountPoint* _mountPoint;
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DevBuffer* _storage;
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DevMXFSFile* _children;
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MXFSNode* _root;
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private:
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nat _state;
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uint64_t _parsingBlock;
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MXFSNode* _parsingLastNode;
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MXFSNode* _parsingParent;
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private:
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volatile int _storageStatus;
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intmax_t _blockId;
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uint8_t* _block;
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intmax_t _fsSize;
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private:
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uint8_t* GetBlock(intmax_t blockId);
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private:
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bool ParseHeader();
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bool ParseBlocks();
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void Failure();
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private:
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MXFSNode* Search(const char* path);
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protected:
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virtual void Think();
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public:
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virtual bool Sync();
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public:
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virtual Device* Open(const char* path, nat flags, nat permissions, nat* type);
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};
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}
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#endif
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