int main(int argc, char* argv[])
{
void* pointer = NULL;
int shm_ID;
if ((shm_ID = shmget(SHMKEY, SHMSIZE, IPC_CREAT | 0444)) < 0 )
{
perror("Error getting SHM segment.");
exit(-1);
}
if ((pointer = shmat(shm_ID, NULL, 0)) == NULL)
{
perror("Error including SHM address space.");
exit(0);
}
shmStruct *value = (shmStruct*)pointer;
//memcpy(&value, pointer, sizeof(pointer));
printf("pointer size: %i\n", sizeof(pointer));
loadFloppyImage(value->floppyName);
if (shmdt(pointer) < 0)
{
perror("Error deallocating shared memory.");
exit(-1);
}
readBootSector();
printBootSector();
return 0;
}
int main(int argc, char* argv[]) {
bootsector * bs = malloc(sizeof(bootsector));
FILE *fat_file;
if(argc != 3)
{
printf("Argument error.\n");
exit(1);
}
if(!(fat_file = fopen(argv[2],"r+")))
{
printf("The file can not be open.\n");
}
//Read boot sector
fread(bs->jmp, 3, 1, fat_file);
fread(bs->oem, 8, 1, fat_file);
fread(bs->bytesInSector, 2, 1, fat_file);
fread(bs->sectorInCluster, 1, 1, fat_file);
fread(bs->numResSector, 2, 1, fat_file);
fread(bs->numFatCopies, 1, 1, fat_file);
fread(bs->numRootDirs, 2, 1, fat_file);
fread(bs->numSectFS, 2, 1, fat_file);
fread(bs->mediaDesc, 1, 1, fat_file);
fread(bs->numSectFat, 2, 1, fat_file);
fread(bs->numSectTrac, 2, 1, fat_file);
fread(bs->numheads, 2, 1, fat_file);
fread(bs->numHiddenSect, 2, 1, fat_file);
fread(bs->bootstrap, 480, 1, fat_file);
fread(bs->sig, 2, 1, fat_file);
int reservedRegion = twoByteToInt(bs->numResSector) * twoByteToInt(bs->bytesInSector);
int fatByteSize = twoByteToInt(bs->numSectFat) * twoByteToInt(bs->bytesInSector);\
int fatClusterSize = fatByteSize/2;
int fat0pos = reservedRegion;
int fat1pos = reservedRegion + fatByteSize;
int rootDirSectorPosition = twoByteToInt(bs->numResSector) + (bs->numFatCopies[0] * twoByteToInt(bs->numSectFat));
int dataRegionStart = rootDirSectorPosition + ((twoByteToInt(bs->numRootDirs)*32)/twoByteToInt(bs->bytesInSector));
int dirBytePos = rootDirSectorPosition * twoByteToInt(bs->bytesInSector);
//printf("\n FAT0 position = %d \n", fat0pos);
//printf(" FAT1 position = %d \n", fat1pos);
fseek(fat_file, fat0pos, SEEK_SET);
unsigned short fat0[fatClusterSize];
unsigned short fat1[fatClusterSize];
fread(fat0, fatClusterSize, 2, fat_file);
fread(fat1, fatClusterSize, 2, fat_file);
if (strcmp("-i", argv[1]) == 0)
{
printBootSector(bs);
} else if(strcmp("-vf", argv[1]) == 0)
{
verifyFats(fatClusterSize, fat0, fat1);
}else if(strcmp("-bl", argv[1]) == 0)
{
emptyBlocks(fatClusterSize, fat0);
}else if(strcmp("-bd", argv[1]) == 0)
{
emptyBlocksWithData(fatClusterSize, dirBytePos, fat0, fat_file);
}else if(strcmp("-cf1", argv[1]) == 0)
{
copyFat(fat0pos, fatClusterSize, fat_file, fat1);
}else if(strcmp("-cf2", argv[1]) == 0)
{
copyFat(fat1pos, fatClusterSize, fat_file, fat0);
}else if(strcmp("-crp1", argv[1]) == 0)
{
fatCorrupted(fat0pos, fat_file);
}else if(strcmp("-crp2", argv[1]) == 0)
{
fatCorrupted(fat1pos, fat_file);
}else
{
printf("Wrong argument.\n");
exit(1);
}
return (EXIT_SUCCESS);
}