mprotect in the FLA

    int pagesize = sysconf(_SC_PAGE_SIZE);

    char *start =
        (char *)(((uintptr_t)dwAddress) & ~(pagesize - 1));
    char *end =
        (char *)(((uintptr_t)dwAddress + iSize + pagesize - 1) & ~(pagesize - 1));


    int mprotect_result = mprotect(start, start - end, PROT_READ | PROT_WRITE | PROT_EXEC);

    if(mprotect_result == 0)
        memcpy(dwAddress, bData, iSize);
    else
    {
        printf_MessageBox("an error from mprotect, value: %d error: %d %s, dwAddress: 0x%X, 0x%X, 0x%X, 0x%X",
            mprotect_result,
            errno,
            strerror(errno),
            dwAddress,
            pagesize,
            start,
            end
        );
    }