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