Method ioctl

source/kernel/knativesocket.cpp:528–725

#define K_IFNAMSIZ 16

U32 KNativeSocketObject::ioctl(KThread* thread, U32 request) {
    CPU* cpu = thread->cpu;
    if (request == 0x541b) {        
#ifdef WIN32
        u_long value=0;
        U32 result = ioctlsocket(this->nativeSocket, FIONREAD, &value);
#else        
        int value=0;
        U32 result = ::ioctl(this->nativeSocket, FIONREAD, &value);        
#endif
        LOG_SOCK("  native socket: %x FIONREAD %d", nativeSocket, (int)value);
        if (result != 0) {
            std::shared_ptr< KNativeSocketObject> t = std::dynamic_pointer_cast<KNativeSocketObject>(shared_from_this());
            return handleNativeSocketError(t, true);
        }        
        this->error = 0;
        thread->memory->writed(IOCTL_ARG1, value);
        return 0;
    } else if (request == K_SIOCGIFCONF) {
        U32 address = IOCTL_ARG1;
        if (!address) {
            return -K_EFAULT;
        }
#ifdef WIN32
        INTERFACE_INFO interfaces[20];
        unsigned long bytes;

        if (this->nativeSocket == SOCKET_ERROR) {
            return -1;
        }

        if (WSAIoctl(this->nativeSocket, SIO_GET_INTERFACE_LIST, 0, 0, &interfaces, sizeof(interfaces), &bytes, 0, 0) == SOCKET_ERROR) {
            std::shared_ptr< KNativeSocketObject> t = std::dynamic_pointer_cast<KNativeSocketObject>(shared_from_this());
            return handleNativeSocketError(t, false);
        }

        U32 count = bytes / sizeof(INTERFACE_INFO);
        thread->memory->writed(address, count * 40);
        U32 buf = thread->memory->readd(address + 4);
        for (U32 i = 0; i < count; i++) {
            struct sockaddr_in* addr = (struct sockaddr_in*)&(interfaces[i].iiAddress);
            if (addr->sin_family == AF_INET && (interfaces[i].iiFlags & IFF_LOOPBACK)) {
                thread->memory->memcpy(buf + 40 * i, "lo", 3);
            } else {
                BString s;
                s += "eth";
                s += i;
                thread->memory->memcpy(buf + 40 * i, s.c_str(), s.length() + 1);
            }
            thread->memory->memcpy(buf + 40 * i + 16, addr, 16); // 16 sizeof addr            
        }
        this->error = 0;
        return 0;
#else        
        U32 numifs = 64;

#ifdef SIOCGIFNUM
        ::ioctl(this->nativeSocket, SIOCGIFNUM, (char*)&numifs);