57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
/**
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* @file shred.h
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* @brief shred drive
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* @author hendrik schutter
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* @date 03.05.2020
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*/
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#ifndef SHRED_H_
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#define SHRED_H_
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#include "reHDD.h"
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#include <iostream>
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#include <fstream>
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#include <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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#define CHUNK_SIZE 1024 * 1024 * 32 // amount of bytes that are overwritten at once --> 32MB
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#define TFNG_DATA_SIZE CHUNK_SIZE // amount of bytes used by tfng
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#define O_DIRECT_PAGE_SIZE 4096 // needed page size for O_DIRECT
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// #define DEMO_DRIVE_SIZE 1024*1024*256L // 256MB
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// #define DEMO_DRIVE_SIZE 1024*1024*1024L // 1GB
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// #define DEMO_DRIVE_SIZE 5*1024*1024*1024L // 5GB
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// #define DEMO_DRIVE_SIZE 1024*1024*1024*10L // 10GB
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typedef int fileDescriptor;
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class Shred
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{
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protected:
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public:
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Shred();
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~Shred();
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int shredDrive(Drive *drive, int *ipSignalFd);
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private:
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fileDescriptor randomSrcFileDiscr;
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fileDescriptor driveFileDiscr;
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unsigned char *caTfngData;
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unsigned char *caReadBuffer;
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unsigned long ulDriveByteSize;
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unsigned long ulDriveByteOverallCount = 0; // all bytes shredded in all iterations + checking -> used for progress calculation
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double d32Percent = 0.0;
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double d32TmpPercent = 0.0;
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inline double calcProgress();
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int iRewindDrive(fileDescriptor file);
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long getDriveSizeInBytes(fileDescriptor file);
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unsigned int uiCalcChecksum(fileDescriptor file, Drive *drive, int *ipSignalFd);
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void cleanup();
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};
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#endif // SHRED_H_
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