Device Drivers

NDIS virtual miniport receive packet indication?
Hi, I am writing a deserialized NDIS virtual miniport driver that indicates packets up to protocols with NdisMIndicateReceivePacket, one at a time. Under normal operation, packets are indicated up just fine. However, when I run a packet sniffer like wireshark on winpcap, the sniffer sees all the packets, but t... 1 Nov 2006 09:55

ZwWriteFile return 0xC0000002.. why??
hi... i wrote kernel driver.. this driver write log... (C:\\log.txt) but, when file size is about 700byte over, ZwWriteFile don't writes. errero return 0xC0000002 ... why?? help me.. plz.. <code> void WriteLogFile ( ) { HANDLE FileHandle; OBJECT_ATTRIBUTES ObjectAttributes; IO_STATUS_BLOCK IoS... 28 Oct 2006 23:09

Signtool problems
When you use makecert to create a certificate, it creates both a private key that you use to sign with and a public key to distribute to machines that want to validate the signature. The .cer file only contains the public key. It does not contain the private key that is needed to do signing. The syntax given... 26 Oct 2006 13:07

Vista: CoInstaller problems...
Hi there! I have created a CoInstaller .dll for a USB device. This CoInstaller dll installs another USB device. I am doing it this way for Vista: -using SetupCopyOEMInf to pre-copy the driver package (will be copied into the driver store, right?) -then I am using UpdateDriverForPlugAndPlayDevices to install ... 31 Oct 2006 06:54

Microsoft CCID driver & ScardControl
I am having difficulties using SCardControl when connected to a USB CCID Smart Card Reader. I have succesfully connected to the reader in direct mode. The EscapeCommandEnable registry flag is set to a non-zero value. I am using the following command: #define IOCTL_CCID_ESCAPE SCARD_CTL_CODE(3500) unsigned... 30 Oct 2006 16:49

Reading the serial number from USB drive
Hi, I need to read the manufacturers serial number from a USB drive and have not been successful. I was able to create a handle to the drive using CreateFile() and the drive letter( E:\), but was not able to read the serial number using deviceIoControl(). I kept getting unsupported request. Could anyone help... 30 Nov 2006 01:34

mf.sys issues with Vista
We are testing our PCI Multiport Serial Adapter drivers (WHQL certified for 2000/XP) with Vista RC2. We use multifunction bus driver mf.sys provided by Microsoft for child PDO generation. In the child function driver we filter the resource requirements during IRP_MN_FILTER_RESOURCE_REQUIREMENTS by modifying the... 31 Oct 2006 09:09

Mirror Driver-Use mapviewoffile in DrvEscape
Hi all, I'm working with mirror dirver now. I use "EngMapFile" to map memory into kernerl mode, which is used to draw screen mirror on it. I use "MapViewOfFIle" in user mode app, copy screen mirror and show, it works. So, there is a deal, immovable file name! I'm not satisfied with it... 24 Oct 2006 12:47

DMA: KeFlushIoBuffers() has no memory barrier?
I noticed in my DDK header files (3790.1830) that KeFlushIoBuffers() is defined to do nothing, absolutely nothing. I know x86 cache's are already coherent with respect to DMA, but isn't there still the possibility of out-of-order loads and stores? Is this a bug? Are driver's supposed to do a KeMemoryBarrier() ex... 22 Oct 2006 18:51

Unclear fakemodem kmdf sample behavior
Dear All. I am trying to adopt fakemodem (or serial) sample using WDK 5744. I built it and verified using hyperterminal. Trying to install fakemodem onto toaster bus driver I see sample fully functional. Trying to install fakemodem onto PCI bus driver (PCI modem) I see that COM properties are not available. ... 7 Nov 2006 12:45