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55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
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#ifndef DEVICEWRAPPERFATPARTITION_H
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#define DEVICEWRAPPERFATPARTITION_H
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/*
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* SPDX-License-Identifier: Apache-2.0
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* Copyright (C) 2022 Raspberry Pi Ltd
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*/
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#include "devicewrapperpartition.h"
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#include <QObject>
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#include <QDate>
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#include <QTime>
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enum fatType { FAT12, FAT16, FAT32, EXFAT };
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struct dir_entry;
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class DeviceWrapperFatPartition : public DeviceWrapperPartition
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{
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Q_OBJECT
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public:
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DeviceWrapperFatPartition(DeviceWrapper *dw, quint64 partStart, quint64 partLen, QObject *parent = nullptr);
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QByteArray readFile(const QString &filename);
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void writeFile(const QString &filename, const QByteArray &contents);
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bool fileExists(const QString &filename);
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protected:
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enum fatType _type;
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uint32_t _firstFatStartOffset, _fatSize, _bytesPerCluster, _clusterOffset;
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uint32_t _fat16_rootDirSectors, _fat16_firstRootDirSector;
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uint32_t _fat32_firstRootDirCluster, _fat32_currentRootDirCluster;
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uint16_t _bytesPerSector, _fat32_fsinfoSector;
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QList<uint32_t> _fatStartOffset;
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QList<uint32_t> getClusterChain(uint32_t firstCluster);
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void setFAT16(uint16_t cluster, uint16_t value);
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void setFAT32(uint32_t cluster, uint32_t value);
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void setFAT(uint32_t cluster, uint32_t value);
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uint32_t getFAT(uint32_t cluster);
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void seekCluster(uint32_t cluster);
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uint32_t allocateCluster();
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uint32_t allocateCluster(uint32_t previousCluster);
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bool getDirEntry(const QString &longFilename, struct dir_entry *entry, bool createIfNotExist = false);
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bool dirNameExists(const QByteArray dirname);
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void updateDirEntry(struct dir_entry *dirEntry);
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void writeDirEntryAtCurrentPos(struct dir_entry *dirEntry);
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void openDir();
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bool readDir(struct dir_entry *result);
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void updateFSinfo(int deltaClusters, uint32_t nextFreeClusterHint);
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uint16_t QTimeToFATtime(const QTime &time);
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uint16_t QDateToFATdate(const QDate &date);
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};
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#endif // DEVICEWRAPPERFATPARTITION_H
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