localhorst/reHDD
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use O_DIRECT

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Hendrik Schutter
2025-12-12 23:16:57 +01:00
parent 8a42ccf9c0
commit 612d531dae
2 changed files with 36 additions and 3 deletions
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5
include/shred.h
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@ -19,6 +19,7 @@
#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 O_DIRECT_PAGE_SIZE 4096 // needed page size for O_DIRECT
// #define DEMO_DRIVE_SIZE 1024*1024*256L // 256MB
// #define DEMO_DRIVE_SIZE 1024*1024*1024L // 1GB
@ -38,8 +39,8 @@ public:
private:
fileDescriptor randomSrcFileDiscr;
fileDescriptor driveFileDiscr;
unsigned char caTfngData[TFNG_DATA_SIZE];
unsigned char caReadBuffer[CHUNK_SIZE];
unsigned char *caTfngData;
unsigned char *caReadBuffer;
unsigned long ulDriveByteSize;
unsigned long ulDriveByteOverallCount = 0; // all bytes shredded in all iterations + checking -> used for progress calculation
double d32Percent = 0.0;