Howto extract info from an HTASK

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  - 1
    - training with focus on device driver installation Is anyone offering training with focus on Windows device driver installation Thanks Tag: Howto extract info from an HTASK Tag: 75569
  - 2
    - Non-paged pool leak in HID Class driver Hi, I used pooltag and found that the non-paged pool bytes used in HID Class driver is increasing about 200 KB per hour and the number of allocations minus the frees is also increasing (1 per second). The problem occurs in Windows 2000 but does not occur in XP. We have a program and a driver that interacts with the Hid Class driver. What in our program/driver can cause a leak in Windows 2000 and not in XP? Thanks, Daniel Tag: Howto extract info from an HTASK Tag: 75567
  - 3
    - why do the encrypted files become plaintext when i reboot computer I develop the encyrpting/decrypting file system based on sfilter.c (IFS kit) . In fat32 file /NTFS file format , all are rigth. But in NTFS compressed file format , when i reboot computer , the file is in plaintext. I dispose the IRP_READ & IRP_WRITE, only disposed ' if((Irp->Flags &(IRP_NOCACHE|IRP_PAGING_IO|IRP_SYNCHRONOUS_PAGING_IO)))'. in IRP_WRITE dispatch function , encrypt file , in IRP_READ dispath function , decrypt file . Why? Tag: Howto extract info from an HTASK Tag: 75565
  - 4
    - SP_DEVICE_INTERFACE_DETAIL_DATA Are the following facts trivial? Maybe not trivial enough. In the C and C++ languages, if the name of an array is used in an expression then it usually converts to a pointer type, but not always. Also array types in function parameters usually convert. However, if an array is being defined and storage is being reserved for the elements, then the name of the array is the name of the array itself, and does not convert to a pointer. Let's hope those facts are understood by most device driver writers, so that they don't cause many blue screens. Let's hope. Let's hope those facts are understood by big software vendors who have been known to write device drivers. Oops. http://msdn.microsoft.com/library/default.asp?url=/library/en-us/devio/base/sp_device_interface_detail_data_str.asp says: > DevicePath > Pointer to a NULL-terminated string that specifies the device path. Tag: Howto extract info from an HTASK Tag: 75563
  - 5
    - Libc.lib is missing in WDK. Hi all, I am new to WDK development and hope that I can get from helps from the experts. My device driver built fine on DDK but I cannot get build success on WDK. The error messages: BUILDMSG: error BLD1004 : MSVCRT lib listed explicitly - use USE_MSVCRT=1 (c:\s b2\smbslave\exe\server) BUILDMSG: error BLD1006 : LIBC lib listed explicitly (c:\smb2\smbslave\exe\server) NMAKE : U1073: don't know how to make 'C:\WinDDK\5270\lib\wxp\i386\libc.lib' BUILD: nmake.exe failed - rc = 2 Does anyone know how I can resolve the above error message? Thanks. HS Phuah Tag: Howto extract info from an HTASK Tag: 75560
  - 6
    - "Driver" or "Interface Object" - yes or no? I am having the following debate: I am trying to convince a vendor that the proper way to provide an interface to their embedded system (that hooks up to a PC using TCPIP) is to provide a software component on the PC (like a driver). For some reason, they are of the oppinion that just providing the syntax for the messages that go back and forth should be enough (i.e. the actual data that corresponeds to a particular message in an agreed format). I believe that it is better software engineering to provide an encapsulation and buffer layer in shape of a software component (such as a DLL etc.). Am I right? Wrong? How do I convince them? Any litterature to refer to? Thanks Tag: Howto extract info from an HTASK Tag: 75552
  - 7
    - BroadcastSystemMessage and system-level device drivers according to the sdk "The BroadcastSystemMessage function sends a message to the specified recipients. The recipients can be applications, installable drivers, network drivers, system-level device drivers, or any combination of these system components" Note: system-level device drivers Is this documentation correct? If so, how does the WDM-type system-level device drivers get this message, possibbly via IoRegisterPlugPlayNotification? which parameters to pass to this call? Or maybe another registration function? And also, if so what parameters to pass in BroadcastSystemMessage( DWORD dwFlags, LPDWORD lpdwRecipients, UINT uiMessage, WPARAM wParam, LPARAM lParam ) ??? such that it can be seen by a wdm driver thanks tom Tag: Howto extract info from an HTASK Tag: 75548
  - 8
    - PS/2 Mouse Packets and USB Mouse Reports under Windows Vista Hello Everybody, Back in 2004, Microsoft said that Vista was going to support the new WM_MOUSEHWHEEL message for horizontal scrolling (tilt wheel), which implies that tilt wheel data will be part of the standard data packet sent by a mouse to the OS. Does anyone know if any information has been published about the standard PS/2 packet structure for a mouse with a tilt wheel? Will there be any other information contained in the new packet format, such as the 4th and 5th buttons? If there are more buttons, what functionality is expected from them? How should a tilt-wheel PS/2 mouse report itself to the system to inform that it supports the new packet structure? Has any information been published about HID usage pages and usages to be used to transfer tilt wheel values to the OS over a USB connection? Any leads will be greatly appreciated. Thank you! Tag: Howto extract info from an HTASK Tag: 75542
  - 9
    - UniDriver plugin -- "custom papersize" does not appear in my DEVMODE UniDriver plugin -- "custom papersize" does not appear in my DEVMODE Why is it that when I enter a "custom papersize", in an application like MS Word, that I don't see the same values (conversions accounted for) in my public DEVMODE (dmPaperSize, dmPaperWidth, dmPaperLength) in the driver, especially when printing? What do I need to do? Any ideas? Rudy Tag: Howto extract info from an HTASK Tag: 75539
  - 10
    - pci expansion support I have finally found some time to rewrite a filter driver for a pci expansion system. Given the product I have a requirment to increase the resource windows of buses that are upstream of my product, because the system may be hot plugged, some BIOSes don't support us, and some of the devices downstream (third party) may require more then the default 64MB/64MB/4K. My driver acts as an upper filter to PCI.SYS. I would like to modify the PCI config space of the upstream buses before PCI.SYS reads them. The information I am looking for is at what point in the process does PCI.sys read the config space before resource arbitration to decide what resources to allocate? I will figure it out through expirimentation, but if someone out there has some street knowledge, or can point me to some relevant documentaion in this area that could save me some time I would appreciate it. The driver I am replacing makes modifications in the IRP_MN_FILTER_RESOURCE_REQUIREMENTS pnp IRP, this is a direction I could go as I have a mostly working example, it just seems like modifying the config space and letting PCI.sys do its job is an cleaner route to take. My worry is that I have somewhat of a chicken and egg dilema as I need pci.sys to make modifications to the config space, but I don't want to make the modifications too late. I want to work within the accepted practices of the OS as I want the driver to support Vista and 64 bit versions as well without too many modifications. Thanks, Brian Tag: Howto extract info from an HTASK Tag: 75538
  - 11
    - !obtrace Hi All, How to set the "Object Reference Tracing" in the gflags to enable the !obtrace to work for _DEVICE_OBJECT objects? TIA Andrew Tag: Howto extract info from an HTASK Tag: 75535
  - 12
    - IoCallDriver() returns STATUS_INVALID_DEVICE_REQUEST 0xc0000010 Hi All, I have a problem formatting and sending an Irp with Urb. I have an usb upper function filter driver and inside my custom IOCTL handler I call UsbBuildSelectConfigurationRequest to format an Urb and then I call SendAwaitUrb to sumbit the Urb. However, IoCallDriver inside SendAwaitUrb is returning STATUS_INVALID_DEVICE_REQUEST 0xc0000010. I must be wrong somewere in the code below, because as we all know the SendWaitUrb and the other code from W.Oney's book is a great source to learn and practicise. I have checked the chain Fido->Fdo->Pdo, it's ok, I believe UsbBuildSelectConfigurationRequest with NULL formats a proper setup packet... but still I am stuck and could not go ahead. Please take a look at the code below and let me know what do you think. Best regards, Dim switch (irpStack->MajorFunction) { case IRP_MJ_CREATE: DebugPrint(("Create \n")); break; case IRP_MJ_CLOSE: DebugPrint(("Close \n")); break; case IRP_MJ_CLEANUP: DebugPrint(("Cleanup \n")); break; case IRP_MJ_DEVICE_CONTROL: ; switch (irpStack->Parameters.DeviceIoControl.IoControlCode) { //Here comes our predefined custom code case IOCTL_MY_CUSTOM: // Create the URB urb = (PURB)ExAllocatePool(NonPagedPool, sizeof(struct _URB_SELECT_CONFIGURATION)); UsbBuildSelectConfigurationRequest(urb, sizeof(struct _URB_SELECT_CONFIGURATION), NULL); status = SendAwaitUrb(DeviceObject, urb); if (!NT_SUCCESS(status)) KdPrint((DRIVERNAME " - sending urb failed with status %X\n", status)); break; default: status = STATUS_INVALID_PARAMETER; break; } default: break; } return CompleteRequest(Irp, status, 0); } NTSTATUS SendAwaitUrb(PDEVICE_OBJECT fdo, PURB urb) { // SendAwaitUrb PIO_STACK_LOCATION stack; IO_STATUS_BLOCK iostatus; KEVENT event; NTSTATUS status; PIRP Irp; PDEVICE_EXTENSION pdx; PAGED_CODE(); ASSERT(KeGetCurrentIrql() == PASSIVE_LEVEL); pdx = (PDEVICE_EXTENSION) fdo->DeviceExtension; if(pdx->NextLowerDriver == NULL) return STATUS_UNSUCCESSFUL; KeInitializeEvent(&event, NotificationEvent, FALSE); Irp = IoBuildDeviceIoControlRequest(IOCTL_INTERNAL_USB_SUBMIT_URB, pdx->NextLowerDriver, NULL, 0, NULL, 0, TRUE, &event, &iostatus); if (!Irp) { KdPrint((DRIVERNAME " - Unable to allocate IRP for sending URB\n")); return STATUS_INSUFFICIENT_RESOURCES; } stack = IoGetNextIrpStackLocation(Irp); stack->Parameters.Others.Argument1 = (PVOID) urb; status = IoCallDriver(pdx->NextLowerDriver, Irp); if (status == STATUS_PENDING) { KeWaitForSingleObject(&event, Executive, KernelMode, FALSE, NULL); status = iostatus.Status; } return status; }// SendAwaitUrb Tag: Howto extract info from an HTASK Tag: 75515
  - 13
    - IoCallDriver() returns STATUS_INVALID_DEVICE_REQUEST 0xc0000010 Hi All, I have a problem formatting and sending an Irp with Urb. I have an usb upper function filter driver and inside my custom IOCTL handler I call UsbBuildSelectConfigurationRequest to format an Urb and then I call SendAwaitUrb to sumbit the Urb. However, IoCallDriver inside SendAwaitUrb is returning STATUS_INVALID_DEVICE_REQUEST 0xc0000010. I must be wrong somewere in the code below, because as we all know the SendWaitUrb and the other code from W.Oney's book is a great source to learn and practicise. I have checked the chain Fido->Fdo->Pdo, it's ok, I believe UsbBuildSelectConfigurationRequest with NULL formats a proper setup packet... but still I am stuck and could not go ahead. Please take a look at the code below and let me know what do you think. Best regards, Dim switch (irpStack->MajorFunction) { case IRP_MJ_CREATE: DebugPrint(("Create \n")); break; case IRP_MJ_CLOSE: DebugPrint(("Close \n")); break; case IRP_MJ_CLEANUP: DebugPrint(("Cleanup \n")); break; case IRP_MJ_DEVICE_CONTROL: ; switch (irpStack->Parameters.DeviceIoControl.IoControlCode) { //Here comes our predefined custom code case IOCTL_MY_CUSTOM: // Create the URB urb = (PURB)ExAllocatePool(NonPagedPool, sizeof(struct _URB_CONTROL_VENDOR_OR_CLASS_REQUEST)); UsbBuildSelectConfigurationRequest(urb, sizeof(struct _URB_SELECT_CONFIGURATION), NULL); status = SendAwaitUrb(DeviceObject, urb); if (!NT_SUCCESS(status)) KdPrint((DRIVERNAME " - sending urb failed with status %X\n", status)); break; default: status = STATUS_INVALID_PARAMETER; break; } default: break; } return CompleteRequest(Irp, status, 0); } NTSTATUS SendAwaitUrb(PDEVICE_OBJECT fdo, PURB urb) { // SendAwaitUrb PIO_STACK_LOCATION stack; IO_STATUS_BLOCK iostatus; KEVENT event; NTSTATUS status; PIRP Irp; PDEVICE_EXTENSION pdx; PAGED_CODE(); ASSERT(KeGetCurrentIrql() == PASSIVE_LEVEL); pdx = (PDEVICE_EXTENSION) fdo->DeviceExtension; if(pdx->NextLowerDriver == NULL) return STATUS_UNSUCCESSFUL; KeInitializeEvent(&event, NotificationEvent, FALSE); Irp = IoBuildDeviceIoControlRequest(IOCTL_INTERNAL_USB_SUBMIT_URB, pdx->NextLowerDriver, NULL, 0, NULL, 0, TRUE, &event, &iostatus); if (!Irp) { KdPrint((DRIVERNAME " - Unable to allocate IRP for sending URB\n")); return STATUS_INSUFFICIENT_RESOURCES; } stack = IoGetNextIrpStackLocation(Irp); stack->Parameters.Others.Argument1 = (PVOID) urb; status = IoCallDriver(pdx->NextLowerDriver, Irp); if (status == STATUS_PENDING) { KeWaitForSingleObject(&event, Executive, KernelMode, FALSE, NULL); status = iostatus.Status; } return status; }// SendAwaitUrb Tag: Howto extract info from an HTASK Tag: 75514
  - 14
    - Windows running without a pagefile Hi, What are the limitations of a system running windows without a pagefile? -- Thanks, Daniel Tag: Howto extract info from an HTASK Tag: 75501
  - 15
    - Sample Mirror Driver Excel Problem. I believe this problem has been around for some years now as I did find one other posting about it from November, 2002. When the sample mirror display driver that is included with the DDK is loaded (i.e. attached to the desktop), Excel displays the following error when it is started: "Not enough system resources to display completely." I strongly suspect this error is a catch-all for several issues and that the problem here is not necessarily due to the driver's taking resource but with something the driver is, or is not, doing that Excel expects/needs. Note that Excel runs after acknowledging this error message. However, it pops up often, for example when simply clicking on a different worksheet tab. So I am hoping this problem has been solved/identified by now and I would greatly appreciate any information anyone might have about it. Cheers, Bill Wyatt. bwyatt@sonexis.com Tag: Howto extract info from an HTASK Tag: 75499
  - 16
    - Compiling Device Drivers in C++ Hi, I would like to know how to compile a device driver written in C++. I have seen a product called DriverWorks but i want to figure out if there is another way to do so. regards, CompuMe Tag: Howto extract info from an HTASK Tag: 75498
  - 17
    - Mounting on a directory Greetings, I'm looking for some help with mounting a file system on a directory via SetVolumeMountPoint. I have a file system that I'm porting to Windows. In general it mounts OK, but I have one strange error condition that manifests itself as follows: 1) format a partition with my file system 2) use SetVolumeMountPoint to mount the file system on an NTFS directory << at this point the file system is NOT accessible via the NTFS path >> 3) reboot the system << the file system IS accessible via the NTFS path >> As a variation, if instead of rebooting the system in step 3, I use the Disk Management tool to assign a drive letter to the partition with my file system, it somehow makes the file system accessible via the NTFS path... It feels like my file system is not handling some event properly, but I can't figure out what it is... Anybody have an idea on what's needed? Thanks in advance, -bob Tag: Howto extract info from an HTASK Tag: 75497
  - 18
    - emachine 220 Hi All I need the "special" drivers (video etc.) for the above - tried most places - any clues/help? Thanks David Tag: Howto extract info from an HTASK Tag: 75496
  - 19
    - emf what is this nt emf 1.003,1.006,1.007,1.008. what difference will it make if i choose 1.003 instead of 1.008. are these formats standard ones or are they undocumented. can i develop application that use these formats. why microsoft says that it has its own spool emf and another emf for for the outsiders?????? Tag: Howto extract info from an HTASK Tag: 75490
  - 20
    - SetupDiCallClassInstaller Intiating driver install then failing. Hi, this question has to with the installation and loading of a driver. The installation code I've written works great for Windows XP but not for Windows 2K. I used w2k for the building with the latest DDK. There is no hardware involved so my application calls the Setup API functions to communicate with the PnP Manager. So the adding of the devices is done when a user adds another port, not when the user installs the software. These devices are enumerated in ENUM\ROOT\PORTS. I have a virtual serial port (Com Port) driver I've written that can have up to 255 virtual devices. I have the .inf file and the .sys file in a subdirectory of my application. When I add the first port from my application it gets to the SetupDiCallClassInstaller function and it is called. The PnP Manager then loads my driver and calls DriverEntry. DriverEntry returns STATUS_SUCCESS but the PnP Manager calls my unload routine right after this. SetupDiCallClassInstaller returns stating a reboot is required. On Windows XP the AddDevice routine is called after the successfull call to DriverEntry with no request for a reboot. If I do reboot then everything works great. What is different from wxp and w2k in this scenario? Is there something in the deviceobject that needs to be set. I have Debug Prints in the PnP dispatch routines and none are being called. setupapi.log looks like this: @ 13:54:31.914 : Install Device: Begin. @ 13:54:31.914 : Doing full install of ROOT\PORTS\0000. @ 13:54:31.914 : Install Device: Writing BASIC Logical Configs @ 13:54:31.914 : Install Device: Changing registry settings specified by INF(s). @ 13:54:31.924 : Install Device: Writing driver specific registry settings. @ 13:54:31.924 : Install Device: Installing required Windows services. @ 13:54:32.785 : Install Device: Writing drive descriptive registry settings. @ 13:54:32.795 : Install Device: Calling RunOnce/GrpConv items. @ 13:54:32.795 : Executing RunOnce to process 5 RunOnce entries. @ 13:54:32.815 : Device install finished successfully (ROOT\PORTS\0000). @ 13:54:32.815 : Install Device: End. @ 13:55:02.017 : Device install function: DIF_PROPERTYCHANGE. @ 13:55:02.027 : Executing class-installer. @ 13:55:02.027 : Completed class-installer. @ 13:55:02.027 : Executing default installer. @ 13:55:15.166 : Device required reboot: Device has problem: 31. @ 13:55:15.176 : Completed default installer. Why does w2k require a reboot and not wxp? Problem 31 states that my driver depends on another driver that is not loaded? My driver is not dependent upon another driver? Anyone have any ideas as to what is going on? -David G Tag: Howto extract info from an HTASK Tag: 75469
  - 21
    - Help - creating thread in kernel mode Anyone can help me how to create a thread in kernel-mode that can write data to physical user memory? Thanks Arcady Tag: Howto extract info from an HTASK Tag: 75465
  - 22
    - Question about completion routine for InternalDeviceControl. Hi, does anyone know how to have the completion routine for InternalDeviceControl set up properly so that the routine will be called when the kmdf request object is completed by lower drivers? I set it up according to kmdf help file and the driver will only execute the routine twice before device manager will stop the driver completely. And I used the following two lines WdfRequestSetCompletionRoutine (Request, completionRoutine, devExt); ret = WdfRequestSend (Request, Target, WDF_NO_SEND_OPTIONS); to register a completion routine that just print out the text message and called WdfRequestComplete(Request, Params->IoStatus.Status) to complete the request. Thanks. AL. Tag: Howto extract info from an HTASK Tag: 75464
  - 23
    - Memory manager writing pages back to executables... I was reading an article posted in code project website. The author has noticed that his XP explorer was taking about 5 seconds to display an error message when he tried deleted a locked file or directory. He found that shell32.dll was looping around sleep for 5 times with 1 second expiration. So he decided to patch the shell32.dll using a driver so that it will loop for 0 times thus avoiding the delay. He writes "Now that we know which addresses to patch, we need to map those addresses into the kernel-mode area of the memory. This will allow us to lock the pages in memory, thus preventing them from being swapped out to disk. In this case the memory we're modifying is "backed" by shell32.dll. If it were to be swapped out, the memory manager would attempt to write the changes back to shell32.dll. ...." He also writes (in the Some Final Thoughts section) "I'm not sure why the memory manager doesn't try to write the modified pages back to shell32.dll. I suspect that it's because the entries in the Page Frame Number Database representing the physical pages we've modified always have a "reference count" of at least 1 (because they're locked). If my understanding is correct, this means they will not be moved to the "Modified List" and thus will not be written to disk by the Modified Page Writer. If anyone can expand on this, please leave a comment. " My question is: 1. Is it true that the memory manager will write pages back to the executable upon modification? Under what circumstance does the memory manager does this? 2. Where can I find more information about this topic? The original article may be found at http://www.codeproject.com/system/NoDeleteDelay.asp Tom Tag: Howto extract info from an HTASK Tag: 75450
  - 24
    - Error compiling my code Hi all. I'm a newbie in programming device drivers and now I want to handle control-requests to my driver and I get compiler errors. I can't find the failure, can you help me please? compiler error message: "error c4028: formal parameter 1 different from declaration" here my code: // header NTSTATUS MyControl( IN PDRIVER_OBJECT Driver, IN PIRP Irp ); NTSTATUS MyDeviceControl( IN ULONG ioControlCode, OUT PIO_STATUS_BLOCK IoStatus, IN PDRIVER_OBJECT Driver ); // code NTSTATUS DriverEntry( IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING RegistryPath ) { DriverObject->MajorFunction [IRP_MJ_DEVICE_CONTROL] = MyControl; return STATUS_SUCCESS; } NTSTATUS MyControl( IN PDRIVER_OBJECT Driver, IN PIRP Irp ) { PIO_STACK_LOCATION irpStack; ULONG ioControlCode; NTSTATUS ntstatus; ntstatus = Irp->IoStatus.Status = STATUS_SUCCESS; Irp->IoStatus.Information = 0; irpStack = IoGetCurrentIrpStackLocation(Irp); ioControlCode = irpStack->Parameters.DeviceIoControl.IoControlCode; ntstatus = MyDeviceControl( ioControlCode, &Irp->IoStatus, Driver ); IoCompleteRequest( Irp, IO_NO_INCREMENT ); return ntstatus; } NTSTATUS MyDeviceControl( IN ULONG IoControlCode, OUT PIO_STATUS_BLOCK IoStatus, IN PDRIVER_OBJECT DriverObject ) { NTSTATUS ntStatus; switch ( IoControlCode ) { case IOCTL_START_BLOCK_KBD: DriverObject->MajorFunction[IRP_MJ_READ] = MyDispatchRead; IoStatus->Status = STATUS_SUCCESS; break; case IOCTL_END_BLOCK_KBD: DriverObject->MajorFunction[IRP_MJ_READ] = MyDispatchGeneral; IoStatus->Status = STATUS_SUCCESS; break; default: IoStatus->Status = STATUS_INVALID_DEVICE_REQUEST; break; } return IoStatus->Status; } thanks macman Tag: Howto extract info from an HTASK Tag: 75447
  - 25
    - Problems with PREFast DDK 3790.1830 (Win2003SP1) Hi all. Yesterday I migrated from DDK build 3790 (I think it's called "Windows Server 2003 DDK") to the newest build 3790.1830 ("Windows Server 2003 with SP1 DDK"). Prefast stopped working properly: I have this compiler warning if I run "prefast build -cefw" Compiling - driver.rc for i386 cl : warning D4002 : ignoring unknown option '/hotpatch' which doesn't worry me too much. The real problem is that Prefast issues some defects, but when I try to run "prefast view", it spits out a script error: Line: 422 Char: 2 Error: 'documentElement' is null or not an object Code: 0 URL: file://C:\WINDDK\3790~1.183\bin\x86\drvfast\scripts\DefectUI\DefectUI.hta If I try "prefast list", it fails with this message ----------------------------------------------------------------------------- Microsoft (R) PREfast Version 1.5.2402 for 80x86. Copyright (C) Microsoft Corporation. All rights reserved. ----------------------------------------------------------------------------- Contents of defect log: C:\WINDDK\3790~1.183\bin\x86\drvfast\defects.xml ----------------------------------------------------------------------------- while creating PREfast.DefectDefs while creating PREfast.DefectSet ----------------------------------------------------------------------------- Error 0x800a138f occurred while creating PREfast.DefectSet component: 'documentElement' is null or not an object ----------------------------------------------------------------------------- I tried the same on another machine with the same DDK, and it works, indeed. So I think there is something screwed up on my machine. Any idea where to look at? Have a nice day GV Tag: Howto extract info from an HTASK Tag: 75446
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  - 1
    - What do I have to use to compile DDK samples? Hi all. Please help to understand what are the differences between VC++ Standard and Pro/Enterprice versions? Can I compile drivers by SE version? I'm asking this question 'cause I'm trying to compile DDK driver sample and getting the errors. If I do this from command line using DDK's build.exe I get the next: BUILD: Compile and Link for i386 BUILD: Compiling and linking d:\work\msddk\ntddk\src\video\miniport\mirror BUILD: NMAKE.EXE failed - rc = 2 BUILD: Done Tag: Howto extract info from an HTASK Tag: 75443
  - 2
    - Difference between Windows NT 5.0 and NT 5.1 booting process Hi all, I'm working on a full disk encryption driver for which I have written a lower filter to disk driver and some 16 bit assemby program (INT13 hook) which will initially decrypt all the system files. All my modules are working fine in Windows 2000 but in Windows XP it crashes with the following bug check code. PROCESS1_INITIALIZATION_FAILED (6b) Arguments: Arg1: c000007a, Indicates the NT status code that caused the failure. Arg2: 00000006, (reserved) Arg3: 00000000 Arg4: 00000000 Is there any differnence in the booting process of Windows 2000 and Windows XP in terms of reading the data from the disk at boot level. Developer Tag: Howto extract info from an HTASK Tag: 75438
  - 3
    - Understanding NdisMAllocateMapRegisters Hi Is it required to call NdisMAllocateMapRegisters before the ndis miniport calls NdisMAllocateSharedMemory(). (as documented in the ddk)? Can't the physical address returned by calling NdisMAllocateSharedMemory() passed to the dma master on the device? My understanding is - if an Ndis Buffer passed by protocol drivers has to be mapped directly and passed to the dma master, then a NdisMStartBufferPhysicalmapping() should be called. To do this, a map register is required, hence NdisMAllocateMapregisters() should be called prior to calling NdisMstartBufferPhysixcalmapping(). But if the buffer passed by the protocol driver is copied to a buffer alloacted using NdisMAllocateSharedMemory(), then NdisMAllocateMapRegister () is not required. Please correct me if Im wrong. basically, What does NdisMAlloacteMapRegisters() do and how and when should an ndis miniport use it.? Thanks in Advance, suu. Tag: Howto extract info from an HTASK Tag: 75430
  - 4
    - serial COM port driver Hi All, I am working on a project regarding the serial COM port. I have to design my own protocol for the serial communication. In the protocol there are some bits for Read/Write, address(bank, offset) and data to be transferred. Would anybody please tell me where I can find the Serial COM port driver, especially the driver that provides the funcation calls/APIs that allow me to call them by using my own protocol? Thanks a lot for your help. Tag: Howto extract info from an HTASK Tag: 75425
  - 5
    - Help on NDISUIO hi everyone, i am doing a school project to obtain network adaptor information, and i am TOTALLY new with ndisuio. after reading so many articles here, i managed to use the CreatFile and NDISUIO_BINDING_DEVICES model to get a list network adaptors in my laptop... but the returned list is something like /device/xxxxxxxxxxxxxxxxxxxxxx, a serial strange number so called adaptor name, i dont understand what is that? and i am looking for something more specific, like wether it is a wireless or ethernet card...really dont have a clue on how to do that..T_T i am seeking you guys help, seems you all quite pro on this... Millions of thanks!!!! Michael Singapore... Tag: Howto extract info from an HTASK Tag: 75412
  - 6
    - CreateFile returns INVALID_HANDLE_VALUE I'm a newbie playing with implementing the filter control device object that is described in the Microsoft Q262305 KB article and the Oney book (Chap 16). I'm working with a USB keyboard driver stack that actually belongs to a barcode scanner (which provides keyboard scan codes as input). I've successfully played and manipulated kbfiltr.sys to intercept the barcode scanner input and put it in a device extension buffer. I've now spent some time trying to mesh the toaster/filter "control device object" code with the kbfiltr example. The resulting upper filter driver compiles and installs. The named "control device object" (MyBarcode) appears in the Winobj utility's "\Driver" folder. The name also appears in the !devstack for the device object shown below. However, when I make the CreateFile call from my user-mode app, it's always failing. Here's the CreateFile call: HANDLE hdevice = CreateFile( _T("\\\\.\\MyBarcode"), GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL); Any ideas would be appreciated. 1: One thing I just thought of is that the name of the control device object is the same as the executable. Do they need to be different names? 2: Do I need to work with IoRegisterDeviceInterface? lkd> !drvobj kbdclass Driver object (866982c8) is for: \Driver\Kbdclass Driver Extension List: (id , addr) Device Object list: 862773c8 8604be38 86697900 lkd> !devstack 8604be38 !DevObj !DrvObj !DevExt ObjectName > 8604be38 \Driver\Kbdclass 8604bef0 KeyboardClass1 862643f8 \Driver\MyBarcode 862644b0 863423f8 \Driver\kbdhid 863424b0 86355ab8 \Driver\hidusb 86355b70 0000005d !DevNode 86290488 : DeviceInst is "HID\Vid_065a&Pid_0001\6&3742c807&0&0000" ServiceName is "kbdhid" lkd> When I call CreateFile from my user mode app, however, it fails with INVALID_HANDLE_VALUE. Here's the CreateFile call: HANDLE hdevice = CreateFile(_T("\\\\.\\EpiBarcode"), GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL); , though I can't get a valid handle. I'm looking for ideas My next problem is that Tag: Howto extract info from an HTASK Tag: 75408
  - 7
    - Problems with windows installer after ddk I have installed the latest winddk and now I am having strange problems with windows installer, when I save my vb project it suddenly pops up and tries to reinstall the ddk, then it rolls back. I need to request 'cancel' 3 times to stop this annoying thing. Any clues? Tag: Howto extract info from an HTASK Tag: 75403
  - 8
    - shutdown handler All, I register shutdown handler using IoRegisterShutdownNotification. In my IRP_MJ_SHUTDOWN handler, I set a value in registry. I clear this registry in next boot. The problem i am having is this value is being set during a bugcheck. Is it possible that IRP_MJ_SHUTDOWN handler is called during BSOD Thanks Tag: Howto extract info from an HTASK Tag: 75400
  - 9
    - User mode winmm driver sample needed! Greetings! I want to write a virtual audio device driver to capture the sound output of another windows application. I have come across previous posts in this news group http://tinyurl.com/862cv http://tinyurl.com/8ssl6 that suggest writing an old-style winmm user mode driver using a wodMessage callback. This sounds like exactly what I want. The problem is that I would really need some working sample code to get started, otherwise I would have no idea how to structure such a driver. Even though the MS documentation tells you some things about how to go about it, I don't quite feel that I get what I need to start writing code just by reading the DDK help files... I have looked in the samples provided with win98DDK as well as the latest DDK, but to no avail... Can anybody point me to, or provide me with some sample code for this? I would be extremely grateful! regards - Jonas Tag: Howto extract info from an HTASK Tag: 75394
  - 10
    - Problem with WdfRequestRetrieveOutputMemory Hello to all, I'm developing a driver for an USB device using KMDF. This is my problem (please, evaluate also my approach): I want my driver to be completely asynchronous, in order to do so, I process DeviceIOControl requests in this way: when a new request arrives, I create a new WDFREQUEST using this code: WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&_object_attributes, MY_IOCTL_CONTEXT); WdfRequestCreate(&_object_attributes, NULL, &_tx_request); In the context structure I store original user mode request and an offset. I create a new WDFMEMORY object using this code: WDF_OBJECT_ATTRIBUTES_INIT(&_object_attributes); _object_attributes.ParentObject=_tx_request; WdfMemoryCreate(&_object_attributes, PagedPool, MYMEMTAG, _tx_buffer_size, &_tx_memory, &_tx_buffer); _tx_buffer_size is larger than original request input buffer because I need to add some protocol bytes. After, I write the request to bus driver using this functions: WdfUsbTargetPipeFormatRequestForWrite(_tx_pipe, _tx_request, _tx_memory, NULL); WdfRequestSetCompletionRoutine(_tx_request, _my_tx_completion_routine, NULL); WdfRequestSend(_tx_request, WdfUsbTargetPipeGetIoTarget(_tx_pipe), NULL); In _my_tx_completion_routine first, I verify if all gone right, if yes: I've to read device response considering that I have to remove protocol bytes and some other informations that are not interesting for user mode application; I use this code (we are always in my 'write phase' completion routine): WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&_object_attributes, MY_IOCTL_CONTEXT); WdfRequestCreate(&_object_attributes, NULL, &_rx_request); Next, I copy IOCTL context structure received as parameter (it contains the original user mode request and its response buffer offset): _new_ioctl_context=WdfObjectGetTypedContext(_rx_request, MY_IOCTL_CONTEXT); RtlCopyMemory(_new_ioctl_context, _tx_request_context, sizeof(MY_IOCTL_CONTEXT)); I create a new WDFMEMORY object that will be used to read from device: WDF_OBJECT_ATTRIBUTES_INIT(&_object_attributes); _object_attributes.ParentObject=_rx_request; WdfMemoryCreate(&_object_attributes, PagedPool, MYMEMTAG, 512, &_rx_memory, NULL); Keep in mind tha last code line because I'll return on it later. Always in my 'write phase' completion routine I attempt to read from device using this code: WdfUsbTargetPipeFormatRequestForRead(_rx_pipe, _rx_request, _rx_memory, NULL); WdfRequestSetCompletionRoutine(_rx_request, _my_rx_completion_routine, NULL); WdfRequestSend(_rx_request, WdfUsbTargetPipeGetIoTarget(_rx_pipe), NULL); At this point I free the write request using WdfObjectDelete() and I leave _my_tx_completion_routine callback. Once device responds, _my_rx_completion_routine callback is invoked: from status block I verify that read request was completed fine and that I received from device the expected amount of data. The 'Request' parameter is the read request that I've created in my 'write phase' completion callback; and now, finally, the problem: before complete the original user mode request, I've to copy to its output buffer the data that I've received from device excluding protocol bytes. When I use WdfRequestRetrieveOutputMemory on 'Request' parameter to parse received data, it always fails due to STATUS_INVALID_DEVICE_REQUEST error. But, the stranger things must still arrive; in order to avoid the problem I have tried the following: do you remember the WdfMemoryCreate call in _my_tx_completion_routine callback? If I replace the NULL last parameter with a pointer to a buffer (in order to store output buffer pointer in the context structure instead of using WdfRequestRetrieveOutputMemory) a bug check occurs and my test machine restarts. All parameters supplied to WdfMemoryCreate are valid (except for the last parameter that is currently a reference to PUCAHR _buffer=NULL). It is still not the end: if I bring back to NULL the WdfMemoryCreate call last parameter, and exacly below I use WdfMemoryGetBuffer, I obtain a pointer that, once stored in the context structure, when _my_rx_completion_routine is invoked, stores the data received from the device. At this point I can complete the original user mode request correctly. What's wrong with first attempt using WdfRequestRetrieveOutputMemory? What I'm mistaking? Thank you for the patience. Tag: Howto extract info from an HTASK Tag: 75391
  - 11
    - STATUS_PENDING returned by lower driver for IOCTL_INTERNAL_USB_SUBMIT_URB Hi All, I have the following code (SendAwaitUrb) that I got from W. Oney's book. I like this book, very useful, a lot of samples, just a great educational source about USB drivers! Probably I do something wrong because my IoCallDriver always return STATUS_PENDING. I call SendAwaitUrb and IoCallDriver from within my Lower function filter driver. I attach the filter driver below the function driver and I am expecting to be able to send Irp with URB to the bus driver. I am a bit concerned about the code pdx = (PDEVICE_EXTENSION) fdo->DeviceExtension; In my filter's AddDevice function I have successfully attached the filter to the driver stack like this: pdx->NextLowerDriver = IoAttachDeviceToDeviceStack ( fdo, pdo). I do IoCallDriver in SendAwaitUrb function like this: IoCallDriver(pdx->NextLowerDriver, Irp); I will be very thankful if you can help me identify the error. Here is the code of the function: #pragma PAGEDCODE NTSTATUS SendAwaitUrb(PDEVICE_OBJECT fdo, PURB urb) { // SendAwaitUrb PIO_STACK_LOCATION stack; IO_STATUS_BLOCK iostatus; KEVENT event; NTSTATUS status; PIRP Irp; PDEVICE_EXTENSION pdx; PAGED_CODE(); ASSERT(KeGetCurrentIrql() == PASSIVE_LEVEL); pdx = (PDEVICE_EXTENSION) fdo->DeviceExtension; pdx->NextLowerDriver = TopOfStack; KeInitializeEvent(&event, NotificationEvent, FALSE); Irp = IoBuildDeviceIoControlRequest(IOCTL_INTERNAL_USB_SUBMIT_URB, pdx->NextLowerDriver, NULL, 0, NULL, 0, TRUE, &event, &iostatus); if (!Irp) { KdPrint((DRIVERNAME " - Unable to allocate IRP for sending URB\n")); return STATUS_INSUFFICIENT_RESOURCES; } stack = IoGetNextIrpStackLocation(Irp); stack->Parameters.Others.Argument1 = (PVOID) urb; status = IoCallDriver(pdx->NextLowerDriver, Irp); if (status == STATUS_PENDING) { KeWaitForSingleObject(&event, Executive, KernelMode, FALSE, NULL); status = iostatus.Status; } return status; } // SendAwaitUrb Best regards, Dim Tag: Howto extract info from an HTASK Tag: 75389
  - 12
    - Best software ftp download! We provide cracked softwares, these software are all in english languag and absolutely full cracked. They are best softwares and best price. 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  - 13
    - Cancelling Jobs in unidrv architecture Hi I am developing a unidrv based printer driver for Windows XP for which i have written the rendering plugin, ui plugin and the Language Monitor plugin apart fron the gpd file. I would like to handle cancelling of jobs from the spooler queue. What would be the best way to go about it? Will i have to implement the Print Processor for this?? Thanks in advance. Chaitanya Tag: Howto extract info from an HTASK Tag: 75383
  - 14
    - USB RNDIS custom OID Is is possible to send/receive vendor defined data over the control channel? E.g. for a user-mode application showing some device/system specific information. Do I need to provide hardware for driver signing? Leo Havmøller. Tag: Howto extract info from an HTASK Tag: 75382
  - 15
    - SoftIce and WinXP SP2 CHECKED Hi, I have some problem with running SoftIce (Driver Studio 3.2) on Windows XP SP2 MUI CHECKED. I try run SoftIce (Ctrl + D) but appears very strange SoftIce window. After close this window Windows frozen - all not work (keyboard, mouse). SoftIce from Driver Studio 2.7 work good but not work TAB key (for completion symbols names). Thanks. Tag: Howto extract info from an HTASK Tag: 75380
  - 16
    - Get Rich Take advantage of a great deal Tag: Howto extract info from an HTASK Tag: 75379
  - 17
    - Q) Is it possible to change the link speed/duplex Hello all, I'm working on windows XP Ethernet D/D. My question is little bit related with the IEEE spec, but please answer for that. Q) Regarding to Ethernet Phy, is it possible to change the link speed/duplex without the link dis-connecting? I'm afraid of my Ethernet_Phy¡¯s indicating the link speed/duplex changing without any link dis-connecting. Thank you. // Daum. Tag: Howto extract info from an HTASK Tag: 75374
  - 18
    - SdBusSubmitRequest() CMD53 Multiple Block Read/Write Hi, I am working on a driver using the SDIO interface on Windows XP. With SdBusSubmitRequest() cmd53, the driver gets okay from the SD bus stack, but anything after 64 byte is garbage. I checked to make sure that block size setting for the function is set correctly. Is anyone else experiencing the same problem? Thanks, Chun Tag: Howto extract info from an HTASK Tag: 75373
  - 19
    - Installing COM server from printer driver INF file. Hi, I'm trying to install and register COM server from printer driver INF file using RegisterDlls directive. In INF File, I copy dll to Windows system folder and register. AddPrinter successfully copies dll to WIndows\System32 folder. But it is simply ignoring RegisterDlls directive. It did not register COM server. RegisterDlls = REGISTER_COM_SERVER [REGISTER_COM_SERVER] 11,,myserver.dll,1 Any Idea? Thanks Charles Tag: Howto extract info from an HTASK Tag: 75370
  - 20
    - Q) Ethernet Duplex mismatch. Q) Ethernet Duplex mismatch. Dear all, I'm playing with an Ethernet device driver at WinXP. In some cases, it has a duplex mismatch(See below). Who is responsible fot that mal-function? My machine(Ethernet_A) or the other machine(Ethernet_B)? By any chance, is it from lack of IEEE standard. Thank you. // Daum === Below ===== Ethernet_A(Playing) <----------> Ethernet_B(The other end point) Setup Operate_mode Setup Operate_mode AUTO ==>100M_F AUTO ===> 100M_F AUTO ==>100M_H 100M_F ===> 100M_F Tag: Howto extract info from an HTASK Tag: 75369
  - 21
    - USB ISO CRC-16 handling I have some design questions related to USB ISO stream error handling. It is well understood that Isonchronous USB streams are not guarenteed to be error free. I long assumed that this means that they are not even error detected. I assumed that the protocol parts of the USB packets (PID, etc) where checked by the host controller and if there were errors in that USBDI would set and error code in the Status field of the USBD_ISO_PACKET_DESCRIPTOR. I had further assumed that errors in the data part of the packet were my responsibility to discover. Thus when designing an internal packet format for a device using isonchronous transport to send data to the host, I included a checksum in the packet header so the driver could validate the header information. Now I am looking more carefully at things and I realize that there is a CRC-16 field used to guard the data portions of ISO transfers. The usb2 spec in section 8.3.5 states that this CRC will give 100% coverage of 1 and 2 bit errors and that the host controller cacluates these checksums as it receives packets and will reject a packet that fails the CRC. And of course I now see that there is a USBD_STATUS_CRC error code (duh - if it was a snake it would have bitten me) that I assume is set when the host controller detects a CRC error. My question is two-fold. First, I am now thinking that if I recieve a completed "in" transfer that is marked as USBD_STATUS_SUCCESS I can assume that the host controller has validated the CRC-16 and thus all the data for that packet is valid within the bounds of the CRC-16 as described in 8.3.5. Thus I can toss my checksum in the data and blindly assume the contents of the data is valid. Is this correct? Secondly, USBD_STATUS_CRC has the "stall bit" set (i.e. USBD_STATUS_HALTED). As I understand it the pipe will have to be reset if I get this error (or perhaps after some number of errors within a URB - I seem to recall reading this somewhere, though I cannot find it now). Is this correct? And if so, is this not kind of harsh for something that is more or less supposed to happen from time to time anyway? I see many places where it is said you should not use ISO pipes if your application cannot tolerate occasional transmission errors. So given the choice of an ISO pipe I would think that it is implied that occasional errors are tolerable. In such a case I think it would be incumbent on the driver to handle such troubles and that USBDI would simply mark the error but otherwise not interfere with the state of the stream. But yet this does not seem to be the case. Am I misreading things or is there some way to decrease the sensitivity of USBDI to transmission errors when dealing with ISO pipes? Best regards, Tom Udale Tag: Howto extract info from an HTASK Tag: 75367
  - 22
    - Creating Custom Printer Settings/Preferences I need to provide a custom interface for my printer driver when the user clicks the 'Preferences' button. Right now the GPD file controls the appearance by loading the standard interface. I would like my own set of dialog boxes to show up when the 'Preferences' button is clicked but am having a hard time finding that information. Can anyone point me to a good resource for that information? Thanks. -- Steve Tag: Howto extract info from an HTASK Tag: 75358
  - 23
    - Creating Custom Printer Settings/Preferences I need to provide a custom interface for my printer driver when the user clicks the 'Preferences' button. Right now the GPD file controls the appearance by loading the standard interface. I would like my own set of dialog boxes to show up when the 'Preferences' button is clicked but am having a hard time finding that information. Can anyone point me to a good resource for that information? Thanks. -- Steve Tag: Howto extract info from an HTASK Tag: 75357
  - 24
    - Q) Will WinXP and Win2K support to reduct I/O-port by Registry Setting? Q) Will WinXP and Win2K support to reduct I/O-port by Registry Setting? Hello everyone, I'm developping PCI/CardBus device driver at Win2K/XP. I heard that there is a mechanism to reduct I/O-port by Registry Setting like below in the device driver¡¯s INF file: [DDInstall.HW] Include=machine.inf Needs=PciIoSpaceNotRequired Wil thel WinXP and Win2K support this mechanism? have a nice day. Thank you. // Daum Tag: Howto extract info from an HTASK Tag: 75353
  - 25
    - Disk Class Upper Filter - FILE_REMOVABLE_MEDIA Using the DDK samples (toaster, diskperf), I've been able to write a basic disk class upper filter. I would like to correctly determine if the device is removable media (i.e. usb thumb drive, iPod, etc). If my filter driver is added before PartMgr in the UpperFilter reg value, the below code works correctly. If it's listed after PartMgr, FILE_REMOVABLE_MEDIA is never set in my filter device's characteristics. Is this expected? Can I get this info elsewhere, or do I need to control the order of the UpperFilters? From the toaster filter example (IRP_MJ_PNP -> IRP_MN_START_DEVICE): // On the way up inherit FILE_REMOVABLE_MEDIA during Start. // This characteristic is available only after the driver stack is started!. if(deviceExtension->NextLowerDriver->Characteristics & FILE_REMOVABLE_MEDIA) { DeviceObject->Characteristics |= FILE_REMOVABLE_MEDIA; } **** Any info or pointers would be greatly appreciated. Thanks Tag: Howto extract info from an HTASK Tag: 75352

Hi,

I am conscient that it might not be the place to ask that question here.

I am trying to identify which task is presently active for the user.

I am trying to filter WM_ACTIVATEAPP:
But the param is an htask How do I get information such as which application name is?
Or perhaps convert htask in ProcessID so I can extract the module name.

Thanks
Denis

Top

Re: Howto extract info from an HTASK by Skywing

Skywing
Mon Feb 06 13:23:59 CST 2006

It sounds like you're looking at some really ancient SDK documentation if
you're seeing mention of things like HTASKs.

The lParam value for WM_ACTIVATEAPP is a thread id in 32-bit windows.
HTASKs are things for Win16...

"Denis @ TheOffice" <denisco@ica.net> wrote in message
news:1139253598.306124@www.vif.com...
> Hi,
>
> I am conscient that it might not be the place to ask that question here.
>
> I am trying to identify which task is presently active for the user.
>
> I am trying to filter WM_ACTIVATEAPP:
> But the param is an htask How do I get information such as which
> application name is?
> Or perhaps convert htask in ProcessID so I can extract the module name.
>
> Thanks
> Denis
>
>

Top

Re: Howto extract info from an HTASK by Denis

Denis
Mon Feb 06 14:24:33 CST 2006

You're right I was looking at MFC version of activateapp.
Sorry, never mind.

I think from a threadID I can enum windows then
GetWindowThreadProcessId(...)
for then openProcess(...) for info and then
EnumProcessModules(...) for finally get my :
GetModuleBaseName(...)

I whish there was an easier way to do that. In some ways I do missed the old Win3.1 things like that
was so easier back then.

Regards,
Denis

"Skywing" <skywing_NO_SPAM_@valhallalegends.com> wrote in message
news:O%23vHkL1KGHA.3728@tk2msftngp13.phx.gbl...
> It sounds like you're looking at some really ancient SDK documentation if
> you're seeing mention of things like HTASKs.
>
> The lParam value for WM_ACTIVATEAPP is a thread id in 32-bit windows.
> HTASKs are things for Win16...
>
> "Denis @ TheOffice" <denisco@ica.net> wrote in message
> news:1139253598.306124@www.vif.com...
> > Hi,
> >
> > I am conscient that it might not be the place to ask that question here.
> >
> > I am trying to identify which task is presently active for the user.
> >
> > I am trying to filter WM_ACTIVATEAPP:
> > But the param is an htask How do I get information such as which
> > application name is?
> > Or perhaps convert htask in ProcessID so I can extract the module name.
> >
> > Thanks
> > Denis
> >
> >
>
>

Top