localhorst/reHDD
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read random date in bulk to reduce syscalls

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This commit is contained in:
Hendrik Schutter
2022-05-15 15:17:49 +02:00
parent 4fc44d9926
commit e49c1a231c
3 changed files with 78 additions and 48 deletions
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7
include/reHDD.h
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@ -8,12 +8,12 @@
#ifndef REHDD_H_
#define REHDD_H_
#define REHDD_VERSION "bV0.2.1"
#define REHDD_VERSION "bV0.2.2"
// Drive handling Settings
#define WORSE_HOURS 19200 //mark drive if at this limit or beyond
#define WORSE_POWERUP 10000 //mark drive if at this limit or beyond
#define SHRED_ITERATIONS 3
#define SHRED_ITERATIONS 3U
#define FROZEN_TIMEOUT 10 //After this timeout (minutes) the drive will be marked as frozen
// Logger Settings
@ -23,14 +23,13 @@
#define SOFTWARE_VERSION "alpha"
#define HARDWARE_VERSION "generic"
//#define LOG_LEVEL_HIGH //log everything, like drive scann thread
//#define LOG_LEVEL_HIGH //log everything, like drive scan thread
#ifndef LOG_LEVEL_HIGH
#define LOG_LEVEL_LOW //log only user actions and tasks
#endif
// Logic
//#define DRYRUN //don´t touch the drives
//#define DEMO_DRIVE_SIZE 1024*1024*256 // 256MB used for shredding only
#define FROZEN_ALERT //show alert if drive is frozen
#define ZERO_CHECK_ALERT //check drive after shred if all bytes are zero, show alert if this fails

9
include/shred.h
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@ -17,11 +17,12 @@
#include <unistd.h>
#include <string.h>
#define CHUNK_SIZE 1024*1024*2 //amount of bytes that are overwritten at once
#define SHRED_ITERATIONS 3 //overwrite the drive multiple times, last time with zeros
#define CHUNK_DIMENSION 100U //amount of chunks are read at once from random source
//#define DEMO_DRIVE_SIZE 1024*1024*256 // 256MB
//#define DEMO_DRIVE_SIZE 1024*1024*256L // 256MB
//#define DEMO_DRIVE_SIZE 1024*1024*1024L // 1GB
#define DEMO_DRIVE_SIZE 1024*1024*1024*10L // 10GB
typedef int fileDescriptor;
@ -38,7 +39,7 @@ public:
private:
fileDescriptor randomSrcFileDiscr;
fileDescriptor driveFileDiscr;
unsigned char caChunk[CHUNK_SIZE];
unsigned char caChunk[CHUNK_DIMENSION][CHUNK_SIZE];
unsigned long ulDriveByteSize;
unsigned long ulDriveByteOverallCount = 0; //all bytes shredded in all iterations + checking -> used for progress calculation
double d32Percent = 0.0;