Function VerifyDir

src/dolphin/src/card/CARDCheck.c:80–129

}

static s32 VerifyDir(CARDControl* card, int* outCurrent)
{
    CARDDir* dir[2];
    CARDDirCheck* check[2];
    u16 checkSum;
    u16 checkSumInv;
    int i;
    int errors;
    int current;

    current = errors = 0;
    for (i = 0; i < 2; i++)
    {
        dir[i] = (CARDDir*)((u8*)card->workArea + (1 + i) * CARD_SYSTEM_BLOCK_SIZE);
        check[i] = __CARDGetDirCheck(dir[i]);
        __CARDCheckSum(dir[i], CARD_SYSTEM_BLOCK_SIZE - sizeof(u32), &checkSum, &checkSumInv);
        if (check[i]->checkSum != checkSum || check[i]->checkSumInv != checkSumInv)
        {
            ++errors;
            current = i;
            card->currentDir = 0;
        }
    }

    if (0 == errors)
    {
        if (card->currentDir == 0)
        {
            if ((check[0]->checkCode - check[1]->checkCode) < 0)
            {
                current = 0;
            }
            else
            {
                current = 1;
            }
            card->currentDir = dir[current];
            memcpy(dir[current], dir[current ^ 1], CARD_SYSTEM_BLOCK_SIZE);
        }
        else
        {
            current = (card->currentDir == dir[0]) ? 0 : 1;
        }
    }
    if (outCurrent)
    {
        *outCurrent = current;
    }
    return errors;
}

static s32 VerifyFAT(CARDControl* card, int* outCurrent)
{