share memory in kernel mode and user mode

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  - 1
    - read data from other driver problem this is my source code for function called from thread creating by driver. This function read data from other driver using ZwReadFile function. My problem is that ZwReadFunction always returns STATUS_INVALID_PARAMETER. I try evryfing for 2 days, but i can't find bug. Please help me NTSTATUS status; HANDLE SvanRTHandle; PBYTE buffor[SVAN_RT_READ_BUFFER_COUNT]; IO_STATUS_BLOCK io_status[SVAN_RT_READ_BUFFER_COUNT]; UNICODE_STRING ReadEventName; UNICODE_STRING ReadEventNumber; ULONG size; LONG i, tmp; ULONG j; PBYTE buf; //handle used to read data from SvanRTDriver PVOID event[2]; PVOID revent[SVAN_RT_READ_BUFFER_COUNT + 1]; HANDLE h_ReadComplete[SVAN_RT_READ_BUFFER_COUNT]; ............... RtlInitUnicodeString(&USvanRTDeviceName,SvanRTDeviceName); InitializeObjectAttributes(&ObjectAttributes, &USvanRTDeviceName, OBJ_KERNEL_HANDLE /*| OBJ_EXCLUSIVE*/ , NULL, NULL); DPF_ENTER(("READ - OpenFileForRead")); status = ZwCreateFile(&SvanRTHandle, FILE_READ_DATA, &ObjectAttributes ,io_status, 0, FILE_ATTRIBUTE_NORMAL, 0, FILE_OPEN_IF, FILE_NON_DIRECTORY_FILE, NULL,0); if(!NT_SUCCESS(status)) { DPF_ENTER(("READ - SvanRTDriver open error 0x%x",status)); KeSetEvent(&SvanRTThredEnd, 0, FALSE); PsTerminateSystemThread(STATUS_SUCCESS); return status; } ReadEventName.Length = 0; ReadEventName.MaximumLength = 100; ReadEventName.Buffer = (PWSTR)ExAllocatePool(NonPagedPool, 200); ReadEventNumber.Length = 0; ReadEventNumber.MaximumLength = 100; ReadEventNumber.Buffer = (PWSTR)ExAllocatePool(NonPagedPool, 200); for(i = 0; i < SVAN_RT_READ_BUFFER_COUNT; i++) { ReadEventName.Buffer[0]=0; ReadEventName.Buffer[1]=0; ReadEventName.Length = 0; RtlAppendUnicodeToString(&ReadEventName,L"\\BaseNamedObjects\\SvRTEv"); RtlIntegerToUnicodeString(i,10,&ReadEventNumber); RtlAppendUnicodeStringToString(&ReadEventName,&ReadEventNumber); DPF_ENTER(("READ - Create read end notification event %S,%d",ReadEventName.Buffer ,i)); revent[i + 1] = IoCreateNotificationEvent(&ReadEventName, h_ReadComplete + i); buffor[i] = (PBYTE)ExAllocatePool(NonPagedPool, read_buffor_size); DPF_ENTER(("READ - send read request %d - event object address %p handle 0x%x bufor %p read_buffor_size %d" ,i ,revent [i + 1],h_ReadComplete[i],buffor[i],read_buffor_size)); status = ZwReadFile(SvanRTHandle, h_ReadComplete[i], NULL, NULL, io_status + i, buffor[i], read_buffor_size, NULL, NULL); DPF_ENTER(("READ - Status = 0x%x",status)); } ps. I need acychronus data read. Radek Tag: share memory in kernel mode and user mode Tag: 48836
  - 2
    - How to read my private devmode in OEMStartDoc ? Hello, I need to send data in OEMStartDoc(..) in ddihhok.cpp. This data are in my private devmode. They are set by my User Interface plug-in. How can I read this data in OEMStartDoc ? Thanks Benoit Tag: share memory in kernel mode and user mode Tag: 48835
  - 3
    - some question for Audio capture in the TESTCAP Hi All my hardwave can capture sound form microphome to PCM Format, I need to add audio support in the Video Capture Driver. 1 how to show a graph like *microphome-->Capture in the Graph Edit?? just like TvAudio Filter!! Can I write a custom Filter like this and how to do thos ?? or I can define a TOPOLOGY for it?? 2 should I need to support Audio propertys ?? which one I need to support ?? KSPROPERTY_AUDDECOUT_MODES or KSPROPERTY_AUDDECOUT_CUR_MODE?? 3 when I use this sample code CComPtr<IBaseFilter> ppf; hr = pBuilder->SetOutputFileName(&MEDIASUBTYPE_PCM, L"C:\\Example.Wav", &ppf, NULL); It retrun error code 0x80040154L REGDB_E_CLASSNOTREG,how do I Slove this?? thanks a lot Tag: share memory in kernel mode and user mode Tag: 48834
  - 4
    - Probelm with Selecting Alt Interface in USB Hi all, I'm trying to get USB Alt Interface. When i tried i'm getting BlueScreen error. Plz give me your suggesstion. The Code: interfaceDescriptor = USBD_ParseConfigurationDescriptorEx( ConfigurationDescriptor, ConfigurationDescriptor, 1, 5, -1,-1,-1); if (!interfaceDescriptor) { return STATUS_UNSUCCESSFUL; } siz = GET_SELECT_INTERFACE_REQUEST_SIZE(interfaceDescriptor->bNumEndpoints); urb = ExAllocatePool(NonPagedPool, siz); if (!urb) return STATUS_NO_MEMORY; urb->UrbHeader.Function = URB_FUNCTION_SELECT_INTERFACE; urb->UrbHeader.Length = (USHORT)siz; urb->UrbSelectInterface.ConfigurationHandle = urb->UrbSelectConfiguration.ConfigurationHandle; urb->UrbSelectInterface.Interface.Length = sizeof(struct _USBD_INTERFACE_INFORMATION); if (interfaceDescriptor->bNumEndpoints > 1) { urb->UrbSelectInterface.Interface.Length +=(interfaceDescriptor->bNumEndpoints-1)* sizeof(struct _USBD_PIPE_INFORMATION); } urb->UrbSelectInterface.Interface.InterfaceNumber = 1; urb->UrbSelectInterface.Interface.AlternateSetting = 5; urb->UrbSelectInterface.Interface.Class = interfaceDescriptor->bInterfaceClass; urb->UrbSelectInterface.Interface.SubClass = interfaceDescriptor->bInterfaceSubClass; urb->UrbSelectInterface.Interface.Protocol = interfaceDescriptor->bInterfaceProtocol; urb->UrbSelectInterface.Interface.NumberOfPipes = interfaceDescriptor->bNumEndpoints; Interface = &urb->UrbSelectConfiguration.Interface; ( ==> Interface is not stored all information from &urb->UrbSelectConfiguration.Interface.) for (i=0; i<urb->UrbSelectInterface.Interface.NumberOfPipes; i++) { // perform pipe initialization here // set the transfer size and any pipe flags we use // USBD sets the rest of the Interface struct members urb->UrbSelectInterface.Interface.Pipes[i].MaximumTransferSize = USBD_DEFAULT_MAXIMUM_TRANSFER_SIZE; } ntStatus = CallUSBD(DeviceObject, urb); (Bluescreen Error is coming) After calling above function., immediately Bluescreen is appeared. Blue Scereen Info: 0x0000008E : (0xC0000005, 0xF81AF878,0xF4C81A00, 0x00000000) USBPORT.SYS ==> Address 0xF81AF878 Base At 0xF8195000, DataStamp 0x3F04CF17 Could you plz any one tell me why this problem is happening. How should i resolve this problem. -- Thanks & Regards, NagarajuS Tag: share memory in kernel mode and user mode Tag: 48833
  - 5
    - Network Bridge Hi i want to bridge two NIC cards for which i have NDIS 5.1 miniport drivers with me. i am not finding any clue of how to programmatically bridge the two drivers. i am using Windows XP as the platform. please give some direction. thanks & regards vinay Tag: share memory in kernel mode and user mode Tag: 48832
  - 6
    - getting errors while building hclinet applcn Hi, When trying to build the example hclient given in the DDK on windows2K, i get the following messages in the log file created. The hclient is not created. Where am i going wrong. Is this code specific to WinXP BUILD: Computing Include file dependencies: BUILD: Examining e:\winddk\3790\src\wdm\hid\hclient directory for files to compile. Compiling e:\winddk\3790\src\wdm\hid\hclient directory ******************** 'nmake.exe /c BUILDMSG=Stop. -i NTTEST= UMTEST= NOLINK=1 NOPASS0=1 386=1' BUILDMSG: Warning : The sample "E:\WINDDK\3790\src\wdm\hid\hclient" is not valid for the current OS target. Linking e:\winddk\3790\src\wdm\hid\hclient directory ******************** 'nmake.exe /c BUILDMSG=Stop. -i LINKONLY=1 NOPASS0=1 NTTEST= UMTEST= 386=1' Narendra Tag: share memory in kernel mode and user mode Tag: 48825
  - 7
    - HELP, 2k EngModifySurface Links with WIN32K.sys Hi All, In 2K usermode printer driver, I am trying to use EngModifySurface. Only this call uses win32k.lib, this finally gets linked with WIN32K.sys, which is kernel mode GDI component. Even GDI32.DLL supports lot of ENG functions, why this is moved to WIN32K.sys? for me any 2k driver built with this call causes not load the UI. Also fails to print from the winword. Any one noticed similar problem ? Please help on this. Waiting for your reply. -- With Thanks & Regards, Shrinidhi.Kulkarni 5732293x5215 Tag: share memory in kernel mode and user mode Tag: 48824
  - 8
    - sony display driver HI I have a sony gdm 4011p monitor (20") that's showing up as a plug&play monitor - allowing me only 1280x1024. What could I do to get the maximum resolution (e.g. 1600x1200)? Thanks Henrique Tag: share memory in kernel mode and user mode Tag: 48808
  - 9
    - Serial Out from Kernel Mode Hi All, I need to pass the debug statements from a kernel driver thru the serial port to a different machine. I have tried the following code: fileName.Buffer = NULL; fileName.Length = 0; fileName.MaximumLength = sizeof(DEFAULT_LOG_FILE_NAME) + sizeof(UNICODE_NULL); fileName.Buffer = (PWSTR)ExAllocatePool(PagedPool, fileName.MaximumLength); if (!fileName.Buffer) { //DD(NULL,DDE,"LogMessage: FAIL. ExAllocatePool Failed.\n"); KdPrint((DRIVERNAME " LogMessage: FAIL. ExAllocatePool Failed")); return FALSE; } RtlZeroMemory(fileName.Buffer, fileName.MaximumLength); status = RtlAppendUnicodeToString(&fileName, (PWSTR)DEFAULT_LOG_FILE_NAME); InitializeObjectAttributes (&objectAttributes, (PUNICODE_STRING)&fileName, OBJ_CASE_INSENSITIVE|OBJ_KERNEL_HANDLE, NULL, NULL ); status = ZwCreateFile( &FileHandle, //FILE_APPEND_DATA, FILE_WRITE_DATA, &objectAttributes, &IoStatus, 0, FILE_ATTRIBUTE_NORMAL, FILE_SHARE_WRITE, FILE_OPEN_IF, FILE_SYNCHRONOUS_IO_NONALERT, NULL, 0 ); ZwWriteFile( FileHandle, NULL, NULL, NULL, &IoStatus, buf, Length, NULL, NULL ); to do this... But More often than not I dont get the Serial out messages. At some times I do get a few Serial outs on the remote machine but there seems to be some baudrate problem. I Also tried this: PDEVICE_OBJECT SerialDevice; PFILE_OBJECT FileObject; UNICODE_STRING uszDevName; WCHAR szDevName[] = L"\\Device\\Serial0"; RtlInitUnicodeString (&uszDevName, szDevName); status = IoGetDeviceObjectPointer (&uszDevName, SYNCHRONIZE|GENERIC_READ|GENERIC_WRITE, &FileObject, &SerialDevice); if (!NT_SUCCESS(status)) { KdPrint((DRIVERNAME " IoGetDeviceObjectPointer:Error cant open File ")); return FALSE; } // if else { KdPrint((DRIVERNAME " Bingo Got it")); } But cant open handle this way. Can anyone suggest what is a best way to do this. Sunil. Tag: share memory in kernel mode and user mode Tag: 48807
  - 10
    - manually loading a pnp driver is there a way for me to manually loading a driver into the kerenel and get it's DriverEntry function called (without getting it's AddDevice called ofcourse) ? Tag: share memory in kernel mode and user mode Tag: 48799
  - 11
    - Re: Power Management in PASSTHRU Alireza Dabagh [MS] wrote: > BTW, although sending a packet from a device/protocol edge that is in low > power state is not desired, it is not fatal. Thanks Ali! This was the missing piece of information. > "Eric Brueggemann" <eric.brueggemann@gmail.com> wrote in message > news:cd7gp2$an0@odah37.prod.google.com... > > 1. Does NDIS serialize PNP events with respect to send/receive paths? > > 2. If not, is it a requirement that a packet does not leave the driver > > from an edge that is in low power? > > > > If the answers are 1)no and 2)yes, as I suspect they are, then I > > believe we have a bug in the PASSTHRU driver. So as I now understand, the answer to 2 is no and, hence, there is no bug. The confusion came from the apparent effort in PASSTHRU to guarantee no packets leave low-power edges. So, when I saw a violation of this, I assumed it was a bug. IMHO, a clarifying comment in the code would be helpful to future newcomers. Thanks, Eric Alireza Dabagh [MS] wrote: > Assuming the answers to the questions are yes and no, what is the bug? are > you referring to lack of protection for MPDeviceState and PTDeviceState > variables? > > BTW, although sending a packet from a device/protocol edge that is in low > power state is not desired, it is not fatal. > > -ali > > -- > This posting is provided "AS IS" with no warranties, and confers no rights. > > "Eric Brueggemann" <eric.brueggemann@gmail.com> wrote in message > news:cd7gp2$an0@odah37.prod.google.com... > > Thanks Maxim. I think I found the thread you're referring to. There > > certainly was good information there. I now know, among other things, > > that MPHalt can be called without PtUnbind ever being called. > > > > Unfortunately, however, it didn't address my issue. I believe my > > question boils down to this: > > 1. Does NDIS serialize PNP events with respect to send/receive paths? > > 2. If not, is it a requirement that a packet does not leave the driver > > from an edge that is in low power? > > > > If the answers are 1)no and 2)yes, as I suspect they are, then I > > believe we have a bug in the PASSTHRU driver. > > > > As always, I am very grateful for any insight anybody may have on this. > > > > Cheers, > > > > Eric > > > > Tag: share memory in kernel mode and user mode Tag: 48795
  - 12
    - Printer Driver (NT) Print Dialog Properties User interface Are there any samples one can use to create the user interface dll that is presented to a user when the user presses the Properties button on a printer setup dialog (Windows NT) - without it - the users can't set paper size etc.... Thanks Tag: share memory in kernel mode and user mode Tag: 48783
  - 13
    - Notifications to a DLL I am new to driver development, so my question might be a bit naive. The Situation: I'm developing a USB-based device. A user can connect or disconnect one or more of these devices at any time. I provide a dll to interface between a Windows application and my kernel-mode driver (under construction). Either I or my customer customer will create his/her own Windows app, in their favorite programming environment. The Problem: I'd like to provide callback functions in my dll that will execute whenever a device is connected or disconnected. I can see that there is an SDK Platform function RegisterDeviceNotification that allows user code to register for a callback to a window or service. But I don't have either in my dll. This does not therefore seem to meet my needs. I also see that the IO Manager exports the IoRegisterPlugPlayNotification for drivers. It accepts a callback function argument. The Questions: Can I use the IoRegisterPlugPlayNotification function and locate the callback function be in my (user mode) dll? Or, is there a way to use the RegisterDeviceNotification user-mode function with my dll? Or, is there a better way? Tag: share memory in kernel mode and user mode Tag: 48779
  - 14
    - high speed isoch => why number of packets has to be a multiple of 8 ? Hello, The hepl file for isousb sample driver in XP ddk says the following: " The number of packets sent down with each Irp/Urb pair should be a multiple of 8. " i have also tried and when it is not a multiple of 8 , packets do not go through . however i do not understnad the reason . Is this limit defined in any way by the USB 2.0 specification? If yes , what part of the spec? If not , then what is the reason for this limitation? could somebody please clarify this? thanks in advance regards Taha Tag: share memory in kernel mode and user mode Tag: 48778
  - 15
    - Problem Modifing the NDIS packet Hi All, I am trying to modify the NDIS packet. I want to redirect the packet from destined for 172.10.10.10 to 172.10.10.10. steps taken to modify the packets. 1. Modify the Destination IP address. 2. Calculate the Checksum. 3. Modify the Destination MAC address. 4. Send the packet. I have used both Network stacking and own NDIS packets. When i tested my code, it worked on One Ethernet Adapter and it did not work on another adapters. I do not know why. When i captured the packet with Etherreal, it shows that the Checksum is 0 at the destination. Everything else is fine. I checked the IP address, MAC address, then are updated. I am calculating the right checksum and i made sure i am updating the checksum after i modified the packet. I am not sure, when Checksum became 0. I do not know, if Miniport driver made it 0. Is that the posibility? if yes then why? Is my checksum wrong? I am attaching the code to calculate checksum here. Thanks in advance for your help. Regards Rajesh /* ************************************************************************** Function: FltIPSumCalculation Description: Calculate the 16 bit IP sum. *************************************************************************** */ USHORT FltIPSumCalculation(USHORT len, PUSHORT pbuf) { ULONG sum=0; while(len > 1){ sum += *pbuf++; len -= sizeof(USHORT); } if(len) sum += *(UCHAR*)pbuf; sum = (sum >> 16) + (sum & 0xffff); sum += (sum >> 16); // one's complement the result sum = ~sum; return ((USHORT) sum); } Tag: share memory in kernel mode and user mode Tag: 48773
  - 16
    - halftone settings in GDIINFO Hello printer driver gurus, I am currently working on a virtual CGM printer driver using the msplot example as reference. Since CGM is a device independent format it can handle RGB 24bits (8bits per value). To which value should I set the ulHTOutputFormat field of the GDIINFO structure? The msplot example shows that it is set to HT_FORMAT_4BPP, why? Thanks in advance, Theo Landman Tag: share memory in kernel mode and user mode Tag: 48772
  - 17
    - ndis usb hi, i am writing a ndis usb driver(actually putting the sample codes ndiswdm and bulkusb together). it seems that the driver could send/receive the packet properly if it ignored the mac address of the incoming packet. But I just wonder how to determine the physical mac address of the target device in the initialization stage since the usb controller does not really have one??? Thanks. Tag: share memory in kernel mode and user mode Tag: 48769
  - 18
    - _vsnwprintf May this a stupid question By using dumpbin utility,I found out that wdm.lib exports functions like __vsnprintf __strupr __strset __stricmp __snwprintf __snprintf but not _vsnwprintf as required by ntstrsafe.h when used as inline .... Why is that ? Tag: share memory in kernel mode and user mode Tag: 48759
  - 19
    - Read file from driver - asychronicaly I try to read asynchronicaly data from file. I use ZwReadFile function. But as event to wait this function take HANDLE to event (not Evenmt Object). How to cteate handle to event object. In news arciwum on google i found sample that use ZwCreateEvent Function. But in W2003 DDK I can't find this function. Can I read my file asynchronicaly ??? Radek Michalski Tag: share memory in kernel mode and user mode Tag: 48758
  - 20
    - Size of NON-Paged Memory??? Hi all, For the common buffer master/slave DMA driver, the "AllocateCommonBuffer" is used to allocate non-paged contiguous memory. Does anyone know the maximum size of non-paged contiguous memory could be allocated by "AllocateCommonbuffer"? If there are 10 or more devices in the PC, what is the maximum size of accumulated non-page contiguous memory? Clliman Tag: share memory in kernel mode and user mode Tag: 48755
  - 21
    - How to play sound in Avssamp?? Hi I have try to play sound in Avssamp,I uncomment some code when audio is required,but it still cann't not run ,where is the place that I need to modify?? in the KsNodeDescriptors and KsConnections also has some code is marked,should I remove it?? Second: may I change avssamp.dat to any WAV file that will be fine ?? Thanks a lot Tag: share memory in kernel mode and user mode Tag: 48750
  - 22
    - about SCSI command Hi, I may post this message to a wrong place but I think I can get the answer here. I tried to send a SCSI command, Request Sense, to a SCSI disk logic unit, but there are two buffers, one is the data buffer and the other is the sense data buffer. Which buffer should be used for this command? I red in the document of SPC-2 and is still puzzled at it. It seems that the sense buffer is used only for autosense situation. As a result, I think I should use the data buffer. However, I could not make sure. Please help me. Thanks! Tag: share memory in kernel mode and user mode Tag: 48740
  - 23
    - Where can I download a Drivers-Finder? Where can I download a Drivers-Finder? Is that possible to download a Drivers-Finder software to probe drivers (most them are: motherboard chipset, sound, display, network) from a machine, after formatting this machine, i can reload the drivers i kept from the Drivers-Finder program? any answer or suggestion is appreciated. mark msgmark@hotmail.com Tag: share memory in kernel mode and user mode Tag: 48739
  - 24
    - Malformed TCP packets I have an application that uses overlapped sockets. I run two instances of the application on different PCs; one instance connects to another, then both instances exchange some data. I am having troubles with certain PCs, which send out malformed TCP packets with wrong TCP checksums or IP headers partially overwritten by user data. The problem happens with Win2k SP3 machines, and SP4 seems to help. Now I have an XP SP1 machine (A) and XP SP2 machine (B). When A connects to B, all works fine. When B connects to A (i.e. A is listening), then some TCP packets coming out of A are malformed. When two instances of the appliction are running on A, all is fine. Other XP SP1 and 2003 machines work fine. So it must be something wrong with the machine A. Even if I did something wrong in my user-mode program, this woudn't affect the packet headers, would it? Is it possible to get the list of all the drivers in the TCP stack? I would then compare the stacks on A and B to see if there's any difference. Any other suggestions? Thanks. Tag: share memory in kernel mode and user mode Tag: 48736
  - 25
    - Wireless OID and WPA question Dears I use PCAUSA for wireless OIDs , but it cannot support Windows User Mode . Do you know if latest PCAUSA W32N50 can support User Mode or other good API ? Might I write WPA functions without Funk or Meetinghouse IM driver ? Thanks a lot .. Tag: share memory in kernel mode and user mode Tag: 48734
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  - 1
    - NT and 9x reference code hello. As far as I know, developers can use the template in windows 2000 DDK plotter driver to create an OEM printer driver. Is there a template code for NT4 and Windows 9x? thanks. Tag: share memory in kernel mode and user mode Tag: 48730
  - 2
    - CreateFile() on NDIS Protocol Driver failes for Regular User Accou Hi, I wrote NDIS Protocol Driver based on NDISUIO DDK sample. It works fine but only under "Administrators" accounts. Under normal user ("Power Users", "Backup Operators") CreateFile() fails with error 5 (access denied). NDISUIO does the same. I called MS Technical Support and the guy there trying to tell me that all communication drivers work only under Admin.??? Does not seem to make any sence. After unsuccessful programmatic attempt to AdjustPriviledges() LogonUser() ImpersonateLoggedonUser()... I have tried to change INF, but with no success (I could be wrong there). Sorry for rather long post, Thanks, Alexei Here how modified NDISUIO.inf it looks like: ;------------------------------------------------------------------------- ; NDISUIO.INF -- NDIS Usermode I/O Driver ; ; Copyright (c) 2000, Microsoft Corporation ;------------------------------------------------------------------------- [version] Signature = "$Windows NT$" Class = NetTrans ClassGUID = {4d36e975-e325-11ce-bfc1-08002be10318} Provider = %Msft% LayoutFile = layout.inf [Manufacturer] %Msft%=MSFT [MSFT] %NDISUIO_Desc%=Install, MS_NDISUIO ;------------------------------------------------------------------------- ; Installation Section ;------------------------------------------------------------------------- [Install] AddReg=Inst_Ndi ;changed by AK to make it visible and removable ;Characteristics=0x28 ; NCF_HIDDEN | NCF_NOT_USER_REMOVABLE Characteristics=0x0 ; NCF_USER_REMOVABLE CopyFiles=CpyFiles_Sys ;added by AK as an attempt to rovide all access to everybody Security="D:(A;;GA;;;WD)" ;------------------------------------------------------------------------- ; Ndi installation support ;------------------------------------------------------------------------- [Inst_Ndi] HKR,Ndi,Service,,"Ndisuio" HKR,Ndi,HelpText,,%NDISUIO_HelpText% HKR, Ndi\Interfaces, UpperRange,, noupper HKR,"Ndi\Interfaces","LowerRange",,"ndis5,ndis4,ndis5_uio" ;added by AK as an attempt to rovide all access to everybody [Inst_Ndi.Security] "D:(A;;GA;;;WD)" ;------------------------------------------------------------------------- ; Service installation support ;------------------------------------------------------------------------- [Install.Services] AddService=Ndisuio,,NDISUIO_Service_Inst [Ndisuio_Service_Inst] DisplayName = %NDISUIO_Desc% ServiceType = 1 ;SERVICE_KERNEL_DRIVER StartType = 3 ;SERVICE_MANUAL_START ErrorControl = 1 ;SERVICE_ERROR_NORMAL ServiceBinary = %12%\ndisuio.sys LoadOrderGroup = NDIS Description = %NDISUIO_Desc% [Install.Remove.Services] DelService=Ndisuio ;------------------------------------------------------------------------- ; Declare Destination Directories for file copy/deletion ;------------------------------------------------------------------------- [DestinationDirs] CpyFiles_Sys = 12 ; DIRID_DRIVERS ;------------------------------------------------------------------------- ; Files to Copy/Delete - Referenced by Install and Remove sections above ;------------------------------------------------------------------------- [CpyFiles_Sys] Ndisuio.sys,,,2 [Strings] Msft = "Microsoft" NDISUIO_Desc = "NDIS Usermode I/O Protocol" NDISUIO_HelpText = "A driver to support user-mode I/O on NDIS devices" Tag: share memory in kernel mode and user mode Tag: 48724
  - 3
    - NdisMQueryAdapterResources() : resource allocation problem at WinMe Hi, I am stuck with a similar problem (as mentioned below in one of the older postings). Driver works with XP and 2K. Infact it works with WinME installed on PC where I use PCI-Cardbus(Ricoh) controller to insert my cardbus wireless lan controller. It doesn't work with WinME (on IBM Thinkpad A21m laptop). My NdisMQueryAdapterResources() returns only one resource i.e. interrupt. Using debugger command 'pci' I see that BAR seems to be mapped. No difference when I use NdisMPciAssignResources() wrt number of resources but here I get IO enabled in addition to BusMaster and Memory (i.e. control word 0x7 in NdisMPCIAssignResources() against 0x6 in NdisMQueryAdapterResources() . There is one imp print in the debugger in the reboot that follows crash because of pci-bar not getting mapped. It says"VPICD Severe Perf Warning: interrupt #9 is supriousing. Get the owners of the devices on that interrupt to look at their code." This problem exists till I don't shutdown the m/c and start. Device manager shows that 'SCI IRQ used by ACPI bus' is the interrupt that prompts that warning. My device is on interrupt 0xB. Don't know whether this problem is linked to above resource allocation problem. Hi Daum, Found you query in this ng. Did you get the solution for this ? I couldn't find post-followup-message in your posting hence creating a new thread. Went through "Another NDIS, PnP, PCI question" thread in "comp.os.ms-windows.programmer.nt.kernel-mode" which is related problem but changing eeprom contents from 'other controller' to 'ethernet controller' did not help. Thanks, Ashirwad. >From: daum (daum999@yahoo.com) >Subject: [Q] Resource allocation problem at WinMe : physical memory >start .address always 0. >View this article only >Newsgroups: microsoft.public.development.device.drivers >Date: 2003-05-30 10:57:44 PST >Subject : [Q] Resource allocation problem at WinMe : physical memory start >address always 0. >Hello, everyone. >I'm developing CardBus NDIS D/D at WinMe, and i have one problem during >MiniportInitialize. >The problem never occurred at Win2K or WinXp. >It is a problem concerned about resource allocation. >My Card has 2 memory windows and their sizes are 0x40000 and 0x4000. >(I think the memory size was reasonable because it is below 1MB) >After NdisMQueryAdapterResources was called, it returns the status with >NDIS_STATUS_SUCCESS. >But, the start address of the physical memory-CmResourceTypeMemory- was >always 0. >Of course, the memory Length was all OK : 0x40000 and 0x4000. >And, the returned Flags value was 0x0; so, it was non-prefetchable. >Please remind that the problem occurred only at WinMe not Win2K or WinXp. >I'm not sure it will occur at Win98Se. >Thank you for your help in advance. >//DAUM >This is the only article in this thread Tag: share memory in kernel mode and user mode Tag: 48715
  - 4
    - DrvFillPath Hi When Windows calls my DrvFillPath function of my printer driver, it passes (sometimes) more than 6000 subpaths (MoveEx, Polyline, Polyline, CloseFigure).... so my question now: Where does this come from? Just from one command? Or did the creating application call the FillPath fuction several times? ... 6000 times? Or how's this handled? So, when I'd like to write a test application that creates me that many subpaths and just one DrvFillPath call... what do I have to do? thanks MR Tag: share memory in kernel mode and user mode Tag: 48711
  - 5
    - Serial Port Driver Hi, I am new to device driver in windows. I was looking into the serial driver source provided with DDK2K. I have included all the necessary files. While building the serial driver by giving the build command , i am getting the following error messages E:\WINDDK\2600.1106\src\kernel\serial>build BUILD: Adding /Y to COPYCMD so xcopy ops won't hang. BUILD: Object root set to: ==> objchk_wxp_x86 BUILD: Compile and Link for i386 BUILD: Loading E:\WINDDK\2600~1.110\build.dat... BUILD: Computing Include file dependencies: BUILD: Examining e:\winddk\2600.1106\src\kernel\serial directory for files to compile. e:\winddk\2600.1106\src\kernel\serial - 16 source files (23,107 lines) BUILD: Saving E:\WINDDK\2600~1.110\build.dat... BUILD: Compiling e:\winddk\2600.1106\src\kernel\serial directory Compiling - error.c for i386 error.c(69) : error C2065: 'DPFLTR_TRACE_LEVEL' : undeclared identifier Compiling - flush.c for i386 flush.c(73) : error C2065: 'DPFLTR_INFO_LEVEL' : undeclared identifier flush.c(76) : error C2065: 'DPFLTR_TRACE_LEVEL' : undeclared identifier Compiling - immediat.c for i386 immediat.c(103) : error C2065: 'DPFLTR_TRACE_LEVEL' : undeclared identifier immediat.c(171) : error C2065: 'DPFLTR_INFO_LEVEL' : undeclared identifier Compiling - initunlo.c for i386 initunlo.c(179) : error C2065: 'DPFLTR_INFO_LEVEL' : undeclared identifier initunlo.c(385) : error C2065: 'DPFLTR_TRACE_LEVEL' : undeclared identifier initunlo.c(1113) : error C2065: 'DPFLTR_ERROR_LEVEL' : undeclared identifier initunlo.c(1257) : error C2065: 'DPFLTR_WARNING_LEVEL' : undeclared identifier Compiling - ioctl.c for i386 ioctl.c(619) : error C2065: 'DPFLTR_INFO_LEVEL' : undeclared identifier Compiling - modmflow.c for i386 modmflow.c(90) : error C2065: 'DPFLTR_INFO_LEVEL' : undeclared identifier modmflow.c(1610) : error C2065: 'DPFLTR_TRACE_LEVEL' : undeclared identifier Compiling - openclos.c for i386 openclos.c(137) : error C2065: 'DPFLTR_INFO_LEVEL' : undeclared identifier openclos.c(499) : error C2065: 'DPFLTR_ERROR_LEVEL' : undeclared identifier Compiling - qsfile.c for i386 qsfile.c(84) : error C2065: 'DPFLTR_INFO_LEVEL' : undeclared identifier Compiling - read.c for i386 read.c(125) : error C2065: 'DPFLTR_TRACE_LEVEL' : undeclared identifier read.c(131) : error C2065: 'DPFLTR_INFO_LEVEL' : undeclared identifier Compiling - utils.c for i386 utils.c(328) : error C2065: 'DPFLTR_INFO_LEVEL' : undeclared identifier utils.c(1109) : error C2065: 'DPFLTR_TRACE_LEVEL' : undeclared identifier Compiling - waitmask.c for i386 waitmask.c(96) : error C2065: 'DPFLTR_INFO_LEVEL' : undeclared identifier waitmask.c(639) : error C2065: 'DPFLTR_TRACE_LEVEL' : undeclared identifier Compiling - write.c for i386 write.c(107) : error C2065: 'DPFLTR_TRACE_LEVEL' : undeclared identifier write.c(113) : error C2065: 'DPFLTR_INFO_LEVEL' : undeclared identifier Compiling - pnp.c for i386 pnp.c(128) : error C2065: 'DPFLTR_INFO_LEVEL' : undeclared identifier pnp.c(3141) : error C2065: 'POOL_COLD_ALLOCATION' : undeclared identifier Compiling - registry.c for i386 registry.c(313) : error C2065: 'DPFLTR_TRACE_LEVEL' : undeclared identifier Compiling - legacy.c for i386 legacy.c(86) : error C2065: 'DPFLTR_INFO_LEVEL' : undeclared identifier Compiling - power.c for i386 power.c(101) : error C2065: 'DPFLTR_INFO_LEVEL' : undeclared identifier Compiling - generating code... for i386 BUILD: Compile errors: not linking e:\winddk\2600.1106\src\kernel\serial directo ry BUILD: Done 17 files compiled - 28 Errors - 23107 LPS Can anybody tell me where i am going wrong as i am unable to build the serial driver. Narendra Tag: share memory in kernel mode and user mode Tag: 48708
  - 6
    - How to program parallel port on Windows 2K/XP? I would write an utility to program parallel port for I2C. The user mode program cannot in/out the I/O port directly on Windows 2K/XP. What should I do to solve the problem? As I konw, I need a kernel mode driver to read/write the I/O port. What should the kernel driver do? and how? Best Regards Jackal Huang Tag: share memory in kernel mode and user mode Tag: 48707
  - 7
    - How can I enlarge OutputBuffer size? I can the OutputBuffer size through following. irpStack->Parameters.DeviceIoControl.OutputBufferLength; It's size is always 256. How can I enlarge OutputBuffer size? Thank you in advance. -- What do you want to get by Meditation - for forever meeting - Tag: share memory in kernel mode and user mode Tag: 48704
  - 8
    - ISA NON-Plug and Play WDM Driver I had writen a WDM driver for ISA-device, and it worked good if there is only one device with the system. But the driver can't support more than one device in the same system. The error code is 31. did there anybody ever had the same problem? I use the LogConfig for ISA hardware configuration, and assigned Unknown to driver class. Tag: share memory in kernel mode and user mode Tag: 48703
  - 9
    - Setting WPA key by OID_802_11_xxx Hello, I am trying to set WPA key using OID_802_11_xx OIDs. I set following OIDs in order OID_802_11_INFRASTRUCTURE_MODE to Ndis802_11Infrastructure OID_802_11_AUTHENTICATION_MODE to Ndis802_11AuthModeWPAPSK OID_802_11_WEP_STATUS to Ndis802_11Encryption2Enabled OID_802_11_ADD_KEY using output of PBKDF2("KT12345678",ssid,ssidlength,4096,256) algorithm (to get 256 bits key from "KT12345678" preshared ASCII key ) OID_802_11_SSID using ssid But there is something wrong with EAPOL 4-way handshake communication. AP stays in authentication phase so I can not get IP address from DHCP server. Do I use wrong key algorithm or my order of OIDs is not correct? I saw that people are sending two OID_802_11_ADD_KEY OIDs after OID_802_11_SSID OID and it works. Could someone tell me at which moment these two OIDs are sent and what is used as WPA key (preshared or output of PBKDF2 algorithm)? I do not understand who is responsible for WPA authentication, client software or wireless driver. If I send WEP key to wireless driver everything is Ok (driver takes key, authentication process is done by driver and I get IP address from AP) but with WPA it is not case. Thanks in advance Tag: share memory in kernel mode and user mode Tag: 48701
  - 10
    - Custom DeviceIoControl Handling in Stream Minidrive ? (shared memory user - kernel) Hi, I have the screnario as below : I need to have custom IoControl code to communicated with user-mode application, I know how to to it in non-minidriver kernel mode, but how about in stream minidriver ? On kernel streaming driver code: DriverEntry(IN PDRIVER_OBJECT DriverObject, IN PUNICODE RegisteryPath) { DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = <ouriocontrolhandler> ... ... } Then we have a function: NTSTATUS OurIOControlHandler(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp) { irp = IoGetCurrentIrpStackLocation(Irp); controlCode = irpStack->Parameters.DeviceIoControl.UoControlCode; switch (controlCode) { .... <do our work here> } } However, on stream minidrive, DriverEntry( IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING RegistryPath ) { HW_INITIALIZATION_DATA HwInitData; HwInitData.HwReceivePacket = MyReceivePacket; HwInitData.HwCancelPacket = MyCancelPacket; HwInitData.HwRequestTimeoutHandler = MyTimeoutPacket; <continue> ReturnValue = StreamClassRegisterAdapter(DriverObject, RegistryPath, &HwInitData); } So can I l put in the line (or is it safe to do so ?, will it be overwritted) : DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = <ouriocontrolhandler> in stream minidriver ? what <StreamClassRegisterAdapter()> put in for this parameter (IRP_MJ_DEVICE_CONTROL) ? will it overwrite my parameters ? If I want to have my custom IoControl In minidriver, what is the proper way ? Note: Ref: TestCap DDK sample Thank in advance WP Tag: share memory in kernel mode and user mode Tag: 48697
  - 11
    - passthu problem again. hi, a few days ago i posted a query regarding pasthru IM driver not transmittng larger packets. Mr. Thomas Devine pointed out the article at the following link : http://www.ndis.com/pcakb/KB05280101.htm, but even when i return NDIS_STATUS_NOT_SUPPORTED for OID_TCP_TASK_OFFLOAD in the MPQueryInformation() , the problem persists. any more suggestions ? i have a hunch that this has got something to do with MTU. when i access larger files across the network, the passthru sends the packets of the size of MTU and when i append my own headers, the size gets larger than the MTU and ultimately results in the rejection of the packet. can anybody tell me how i can make the top level network driver to send the packets with size a little less than the MTU so that i can accomodate my headers without exceeding the MTU for NIC ?? thanks in advance. regards. Tag: share memory in kernel mode and user mode Tag: 48696
  - 12
    - Device_Description of IoGetDmaAdapter Hi all, From the Windows 2000 DDK Help, there is a brief description shows that the "MASTER" member of DEVICE_DESCRIPTION indicates whether the device runs as a busmaster adapter (TRUE) or a slave DMA device (FALSE). Would someone tell me the difference in details. Thanks. Clliman Tag: share memory in kernel mode and user mode Tag: 48695
  - 13
    - default library for vsnwprintf what is the default library for vsnwprintf function in kernel mode ? linking ntstrsafe.lib gives unresolved external symbol for the above function ie vsnwprintf .... DDK build is 2600.1106 ( Windows XP SP1 DDK) Tag: share memory in kernel mode and user mode Tag: 48689
  - 14
    - Can not build 16 bit driver uninstallation program I was building a USB driver uninstallation program using win me ddk's 16 bit compiler and linker. Yet it seems that the linker could not build the exe successfully due to the unresolved external "_acrtused". Any one have some comment on this problem? Thanks, Regards, guosheng Tag: share memory in kernel mode and user mode Tag: 48687
  - 15
    - How to Verify PCM Format in SRB_GET_DATA_INTERSECTION?? Hi can anyone tell me that how to verify PCM format in SRB_GET_DATA_INTERSECTION?? my PCM Foramt is define like this,just only one format. KSDATAFORMAT_WAVEFORMATEX PCMAudioFormat = { { sizeof (KSDATAFORMAT_WAVEFORMATEX), 0, 1, 0, STATICGUIDOF(KSDATAFORMAT_TYPE_AUDIO), STATICGUIDOF(KSDATAFORMAT_SUBTYPE_PCM), STATICGUIDOF(KSDATAFORMAT_SPECIFIER_WAVEFORMATEX) }, { WAVE_FORMAT_PCM, 1, // channels 8000, // sampling rate 8000, // byte rate 1, // alignment = nChannels * ( wBitsPerSample / 8 ); 8, // bit resolution 0 // extra } }; I have write a function like this , can you tell me what's going wrong ?? BOOL STREAMAPI AdapterFormatFromRange( IN PHW_STREAM_REQUEST_BLOCK pSrb ) { PSTREAM_DATA_INTERSECT_INFO IntersectInfo; PKSDATARANGE DataRange; BOOL OnlyWantsSize; BOOL MatchFound = FALSE; ULONG FormatSize; ULONG StreamNumber; ULONG j; ULONG NumberOfFormatArrayEntries; PKSDATAFORMAT *pAvailableFormats; IntersectInfo = pSrb->CommandData.IntersectInfo; StreamNumber = IntersectInfo->StreamNumber; DataRange = IntersectInfo->DataRange; NumberOfFormatArrayEntries = Streams [StreamNumber].hwStreamInfo.NumberOfFormatArrayEntries; pAvailableFormats = Streams[StreamNumber].hwStreamInfo.StreamFormatsArray; OnlyWantsSize = (IntersectInfo->SizeOfDataFormatBuffer == sizeof(ULONG)); for (j = 0; j < NumberOfFormatArrayEntries; j++, pAvailableFormats++) { if (!AdapterCompareGUIDsAndFormatSize( DataRange, *pAvailableFormats, TRUE /* CompareFormatSize */)) { continue; } if (IsEqualGUID (&DataRange->Specifier, &KSDATAFORMAT_SPECIFIER_WAVEFORMATEX)) { PKSDATAFORMAT_WAVEFORMATEX DataRangeAudio = (PKSDATAFORMAT_WAVEFORMATEX) DataRange; PWAVEFORMATEX pWaveFormatEx = (PWAVEFORMATEX) ((PKSDATAFORMAT)DataRangeAudio + 1); if (IsEqualGUID (&DataRange->SubFormat , &KSDATAFORMAT_SUBTYPE_PCM)) DataRangeAudio = (PKSDATAFORMAT_WAVEFORMATEX) &PCMAudioFormat; else DataRangeAudio = (PKSDATAFORMAT_WAVEFORMATEX)*pAvailableFormats; MatchFound = TRUE; FormatSize = sizeof (KSDATAFORMAT_WAVEFORMATEX); if (OnlyWantsSize) { break; } if (IntersectInfo->SizeOfDataFormatBuffer < FormatSize) { pSrb->Status = STATUS_BUFFER_TOO_SMALL; return FALSE; } RtlCopyMemory(IntersectInfo-> DataFormatBuffer,DataRangeAudio,sizeof (KSDATAFORMAT_WAVEFORMATEX)); ((PKSDATAFORMAT)IntersectInfo->DataFormatBuffer)-> FormatSize = FormatSize; } else { pSrb->Status = STATUS_NO_MATCH; return FALSE; } } // End of loop on all formats for this stream if (OnlyWantsSize) { *(PULONG) IntersectInfo->DataFormatBuffer = FormatSize; pSrb->ActualBytesTransferred = sizeof(ULONG); return TRUE; } pSrb->ActualBytesTransferred = FormatSize; return TRUE; } Second : can anyone tell me what is this error "CO_E_ACESINWRONGORDER" meaning, and how to slove it?? Thanks a lot Tag: share memory in kernel mode and user mode Tag: 48685
  - 16
    - Video streaming USB device driver based on USBCAMD and AVstream ar Hi, Im trying to develop a driver for USB2.0 camera. I was going through the Microsoft DDK site and it mentions that future driver development must be done with the Windows Server 2003 DDK. So, I have installed this DDK and on going through the samples have come across a driver for an Intel USB Camera. This sample is located in the "...\WINDDK\3790\src\wdm\videocap\usbintel\sys". folder. On going through this example I find that it is based on USBCAMD and on the "stream class" architecture. The "USBCAMD" is fine, but the "stream class architecture" is not. The DDK documentation states that the "stream class architecture" should no longer be used, though it is still provided. The document states that new video drivers must follow the "AVstream architecture". So, I was wondering if there's any way I could get a similar sample driver code for a Video streaming USB device based on USBCAMD and the AVstream class architecture. Please suggest. Thank you, Ravi. Tag: share memory in kernel mode and user mode Tag: 48684
  - 17
    - request for info Hi, I'm hoping to find some help from you device experts. I need to find a way to catch events from a bar code scanner that is confiured as a keyboard wedge. It shows up in my device manager as a HID and I can open it using the HID functions. However, since it's a keyboard device I can't get read or write access (it's already locked by the OS). Can I still get notifications of events from this device after opening it (CreateFile) without read/write permissions? If so, please give me a hint. thanks very much, Deanna Tag: share memory in kernel mode and user mode Tag: 48677
  - 18
    - GDI Datatype FIX Hi What's a FIX number? "A fixed-point number" ... that's all I found in the MSDN... ok, 10.22 ? 1.31? 31.1? 25.7 ? ... can someone tell me that? I think it is 28.4 ... but that's just a guess... second question... can we be shure that this wouldn't change? Or if not, how can I then "translate" this to a float or an integer? thanks MR Tag: share memory in kernel mode and user mode Tag: 48673
  - 19
    - Cann't set the packet filter... Hello, I am developing a miniport driver for Windows XP and want to set a the packet filter. But my machine crashes, if I set the packet filter via NdisRequest. I debuged my driver and detected that the error occures in "ndis!MSyncSetInformation". I think that MSyncSetInformation is a ndis function. Unfortunately, I don't know this ndis function and my driver doesn't call it. Have anyone an idea, why this fuction is called by my system? Why crashs my machine? Thank you in advance... Stefan Lankes Tag: share memory in kernel mode and user mode Tag: 48672
  - 20
    - unidrv gpd NT4 support Hello, The oemdll.htm in windows XP ddk states:- "For the kernel-mode samples to work, the kernel-mode drivers (the Windows NT 4.0 drivers) used most support COM OEM Printer Customization DLL extensions, while the driver files in Windows NT 4.0 Service Pack 4 and earlier do not. " So my question is does unidrv based GPD support exist in NT4 SERVICE PACK 4 upwards OR NT4 service pack 6 UP. thanks vipin Tag: share memory in kernel mode and user mode Tag: 48670
  - 21
    - Driver per magnex Vi sarei grato se mi potreste aiutare: sto cercanddo i driver per xp della fotocamra digitale Magnex DC1310 al sito non c'è collegamento se mi potete segnalare un indirizzo che possa risolvere il problema o meglio qualcuno che ne è già in possesso.... grazie in anticipo Luigi Tag: share memory in kernel mode and user mode Tag: 48669
  - 22
    - Are there something driver for one rs232 barcode reader that... Inputs bar code data into any Windows application. Are there something with free code or totaly free. I find two but all this are trial versions. Thanks a lot. Tag: share memory in kernel mode and user mode Tag: 48660
  - 23
    - Installing software within a driver installation I wrote a device driver. When I will give the installation files to my client, I would like the installation to automatically install a software application at the same time without user intervention. Up to now I have a ini file to install my device driver and a setup.exe to install the software application. How could I combine the 2 installations? -- Oreo Tag: share memory in kernel mode and user mode Tag: 48656
  - 24
    - What is different between \Device\Ip and \Device\RawIp? (empty) -- Remove spam4 from the spam4leo@yuriev.ru to reply. But raider@leo.yuriev.ru is for spam only :-) Tag: share memory in kernel mode and user mode Tag: 48655
  - 25
    - "_acrtused" reference error during linking I am developing an USB installer for windows Me. The API used is 16-bit. So I used the Win ME DDK's 16 bit compiler and link to build the module. The compilation looks OK but the following error returned when linking: ------------------------------------------------------------------------------------------------ echo >NUL @removeMe.CRF d:\WinMEDDK\bin\win_me\bin16\link /NOLOGO /ONERROR:NOEXE /NOD /PACKC:614 40 /ALIGN:16 /STACK:32768 @removeMe.CRF Object Modules [.obj]: /NOLOGO /ONERROR:NOEXE /NOD /PACKC:61440 /ALIGN:16 /STACK :32768 obj\i386\free\removeMe.OBJ + Object Modules [.obj]: Run File [removeMe.exe]: d:\WinMEDDK\LIB\i386\free\removeMe.EXE List File [d:removeMe.map]: obj\i386\free\nul Libraries [.lib]: d:\WinMEDDK\lib\win_me\ + Libraries [.lib]: d:\WinMEDDK\lib\win_me\SETUPX.LIB+ Libraries [.lib]: d:\WinMEDDK\lib\win_me\NETDI.LIB+ Libraries [.lib]: oldnames libw shell Definitions File [nul.def]: obj\i386\free\removeMe.OBJ(removeme.c) : error L2029: '__acrtused' : unresolved external NMAKE : fatal error U1077: 'd:\WinMEDDK\bin\win_me\bin16\link' : return code '0x 2' Stop. ------------------------------------------------------------------------------------------------ Could anyone tell me how to resolve the problem? Tag: share memory in kernel mode and user mode Tag: 48652

how can I share the kernel mode memory in user mode and vice versa in a
video driver dll.
Do I need to create the memory using any particular function or so ???

Top

Re: share memory in kernel mode and user mode by Maxim

Maxim
Wed Jul 21 08:55:12 CDT 2004

Call IOCTL down to the video miniport, which can in turn call the
appropriate facility in VideoPrt. This is how DirectDraw works.

--
Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
maxim@storagecraft.com
http://www.storagecraft.com

"Vivek Gupta" <macha_smarty@hotmail.com> wrote in message
news:eWb9vZwbEHA.1732@TK2MSFTNGP09.phx.gbl...
> how can I share the kernel mode memory in user mode and vice versa in a
> video driver dll.
> Do I need to create the memory using any particular function or so ???
>
>

Top

Re: share memory in kernel mode and user mode by Vivek

Vivek
Wed Jul 21 09:24:26 CDT 2004

that memory would be in the miniport .sys. How would I access it in the
kernel mode dll(video driver) ???
I'd rephrase my question ....
How can I create memory in user mode and access in kernel mode VIDEO DLL ???
and vice versa .......

"Maxim S. Shatskih" <maxim@storagecraft.com> wrote in message
news:OsNqYpybEHA.3944@tk2msftngp13.phx.gbl...
> Call IOCTL down to the video miniport, which can in turn call the
> appropriate facility in VideoPrt. This is how DirectDraw works.
>
> --
> Maxim Shatskih, Windows DDK MVP
> StorageCraft Corporation
> maxim@storagecraft.com
> http://www.storagecraft.com
>
>
> "Vivek Gupta" <macha_smarty@hotmail.com> wrote in message
> news:eWb9vZwbEHA.1732@TK2MSFTNGP09.phx.gbl...
> > how can I share the kernel mode memory in user mode and vice versa in a
> > video driver dll.
> > Do I need to create the memory using any particular function or so ???
> >
> >
>
>

Top