DIFxApp Legacy Mode on Windows 2000

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  - 1
    - disable and re-enable a device Hi, I'm trying to disable a device by issuing an irp (IRP_MN_QUERY_REMOVE_DEVICE) followed by another irp (IRP_MN_REMOVE_DEVICE). to re-enable it again, I'm sending another irp(IRP_MN_START_DEVICE) but I'm getting an error stating STATUS_DELETE_PENDING. Hence, I managed to "disable" a device, but fail to "re-enable" it back. Anybody know the right way of doing this? I'm running as a filter driver. Is there a way to force the system to re-enumerate all the devices - so I could get the device back? cheers. Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67694
  - 2
    - purging ntfs cache from driver - again, sorry... I'm reposting this as I haven't found the answer that I'm looking for, and there's no answer from microsoft yet, and I've been guaranteed 2 days response time.... Hi, I'm trying to purge a specific file data cached by the OS... How do I accomplish that? I've tried to use various techniques (incl setting the flag FILE_NO_INTERMEDIATE_BUFFERING) but the data is still cached. I'm trying to force the system to re-read data in a dvdrom. Apparently, the DVD rom won't be accessed if part of the data (few hundred megs) are cached in the file system. I want this to be accssed each time - or when I want it to. i'm assuming that the file won't be memory-mapped into the memory. I found that mounting and dismounting the drive would purge the cache, but this is a fairly big operation... wondering if there's a better way to do it. This is evident if you try to copy some large files, cancelling it halfway and do a re-copy would take shorter time as the reading is done via cache... but if you disable the dvdrom, and re-enable it, the copy time would take as long as the first time. thanks in advance. Kenny Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67691
  - 3
    - Two drivers for same device Is it possible to have two different low-level drivers claiming the same physical device, and dynamically switch between them? One would be the Microsoft supplied one and another a custom one. I can't implement this as a filter driver, because both claim ownership at the hardware and interrupt level. I don't want to "replace" the system supplied driver. Just to temporarily disable it and activate the custome one and vice-versa. Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67686
  - 4
    - Ndis-Broadcom Hi All, I have written an intermediate driver based on passthru sample. My driver works fine with WLAN card and Gigabit LAN card of intel . But it crashes, when i use it on BroadCom Nextreme Gigabit ethernet card. The operating system is windows xp with SP2 and version of the driver is 7.80.0.0 date:06/19/04. Is there anything i need to put it in .inf or in intermediate driver to make it work with Broadcom's hardware? Could anyone let me know how can i fix this bug? Thanks, Senthil Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67683
  - 5
    - Create asynchronic IRP As a result from IoDeviceControl from an application i want to create a new asynchronic IRP using IoAllocateIrp. The input buffer for the new IRP is the same buffer got from the application. newIrp = IoAllocateIrp(DeviceObject->StackSize, FALSE); if(NULL != newIrp ) { NextStack = IoGetNextIrpStackLocation(Irp); NextStack->MajorFunction = IRP_MJ_INTERNAL_DEVICE_CONTROL; NextStack->Parameters.DeviceIoControl.IoControlCode = IOCTL_INTERNAL_I8042_KEYBOARD_WRITE_BUFFER; buf = Irp->AssociatedIrp.SystemBuffer; BufLen = stack->Parameters.DeviceIoControl.InputBufferLength; NextStack->Parameters.DeviceIoControl.Type3InputBuffer = ExAllocatePool(NonPagedPool,BufLen ); RtlCopyMemory( NextStack->Parameters.DeviceIoControl.Type3InputBuffer, Irp->AssociatedIrp.SystemBuffer, BufferLength); ..... } Got blue screen with error 0xCC PAGE_FAULT_IN_NONPAGED_AREA Invalid system memory has been referenced. can you tell me where i get wrong? Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67681
  - 6
    - How to delete system file in WinXP sp2 on AMD 64-Bit platform? Dear Sir, In WinXP 64bit platform, when I use DeleteFile() function to delete c:\windows\system32\drivers\a.sys ,it can not be deleted successfully , the error code is 2(GetLastError ,means can not find the file, but the file is in the folder), I guess the system protect the system folder ,then how can I delete the files in the system folder ? BTW,I also tried as follows,failed again: 1. I write the hard code of the path "c:\windows\system32\drivers\a.sys"; 2. I use GetSystemWow64Directory () function get the system directory,message box shows the path is "c:\windows\sysWow64",I use the return path +"\drivers\a.sys" in DeleteFile() function; 3. I new a A.txt file in system32 folder,use the above two method to delete the file; All above 3 methods,GetLastError() return value shows can not find the special file. 3ks! Cathy Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67673
  - 7
    - DRIVER_VERIFIER_IOMANAGER_VIOLATION Hi All ! I am working on an Intermediate Driver. When the driver has been installed and i try to dial-up my ISP my machine crashes with BSOD. The following is the detailed crash dump analysis. I am new to WinDBG and so am facing problems on where to begin futher investigation. Any clues would be helpful. Please help. Thanks for your help and time in advance !!! kd> !analyze -v ******************************************************************************* * * * Bugcheck Analysis * * * ******************************************************************************* DRIVER_VERIFIER_IOMANAGER_VIOLATION (c9) The IO manager has caught a misbehaving driver. Arguments: Arg1: 00000005, Irql not equal across call to the driver dispatch routine Arg2: ffb96870, the device object associated with the offending driver Arg3: 00000000, the Irql before the call Arg4: 00000002, the Irql after the call Debugging Details: ------------------ DRIVER_VERIFIER_IO_VIOLATION_TYPE: 5 PREVIOUS_IRQL: 0 CURRENT_IRQL: 2 DEVICE_OBJECT: ffb96870 DRIVER_OBJECT: ffb987e0 IMAGE_NAME: mvstdi5x.sys DEBUG_FLR_IMAGE_TIMESTAMP: 41377210 FAULTING_MODULE: f8e00000 tcpip DEFAULT_BUCKET_ID: DRIVER_FAULT BUGCHECK_STR: 0xC9 LAST_CONTROL_TRANSFER: from 80669d06 to 8053331e STACK_TEXT: fc91756c 80669d06 000000c9 00000005 ffb96870 nt!KeBugCheckEx+0x1b fc9175a4 fa4a5ca0 fc9175c8 fa4a9506 ffb96870 nt!IovCallDriver+0xe1 WARNING: Stack unwind information not available. Following frames may be wrong. fc9175ac fa4a9506 ffb96870 81ed4f20 81ed4f20 mvstdi5x+0x6ca0 fc9175c8 fa4a9a41 ffb885f0 ffb96870 81ed4f20 mvstdi5x+0xa506 fc9175e0 fa4a499d ffb885f0 81ed4f20 ffb885f0 mvstdi5x+0xaa41 fc9175f8 fa4a4a42 ffb885f0 81ed4f20 0000000f mvstdi5x+0x599d fc91760c 804e37f7 ffb885f0 81ed4f20 806ed2a4 mvstdi5x+0x5a42 fc91761c 80669cc5 fc91768c 00000044 819a0b48 nt!IopfCallDriver+0x31 fc917640 f8dda544 ff819ef8 ff87d820 f8df398c nt!IovCallDriver+0xa0 fc917664 f8dda391 fc91768c ff819fc8 00000044 netbt!TdiSendDatagram+0x1b8 fc9176a8 f8dde149 ff819ef8 ac190a0f 00000044 netbt!UdpSendDatagram+0x14c fc9176f0 f8de2421 ff819ef8 ff843fb8 00b72de8 netbt!UdpSendNSBcast+0x288 fc917740 f8de2deb 00000000 00000000 81942abb netbt!NbtRegisterName+0x2d6 fc91779c f8df587d fc9177c8 00942ab5 c0a80109 netbt!NbtOpenAddress+0x3f2 fc9177dc f8df57f1 ff713848 82204f20 0000001a netbt!NTOpenAddr+0x95 fc9177fc 804e37f7 ff713848 00204f20 806ed2a4 netbt!NbtDispatchCreate+0x92 fc91780c 80669cc5 82204f30 82204f20 ff879bb8 nt!IopfCallDriver+0x31 fc917830 8057069a ff8e9960 ff866fa0 fc917a10 nt!IovCallDriver+0xa0 fc917910 80571ba0 ff713848 00000000 ff88a870 nt!IopParseDevice+0xa58 fc917948 805674b5 ff8e9960 00000000 ff88a870 nt!IopParseFile+0x46 fc9179d0 8056729a 000002ec fc917a10 00000040 nt!ObpLookupObjectName+0x119 fc917a24 80570b73 00000000 00000000 55ebe000 nt!ObOpenObjectByName+0xeb fc917aa0 80570c42 ff830fe4 c0100000 fc917c20 nt!IopCreateFile+0x407 fc917afc 80570d78 ff830fe4 c0100000 fc917c20 nt!IoCreateFile+0x8e fc917b3c 804de7ec ff830fe4 c0100000 fc917c20 nt!NtCreateFile+0x30 fc917b3c 804dc9b1 ff830fe4 c0100000 fc917c20 nt!KiFastCallEntry+0xf8 fc917be0 f8d6ba3f ff830fe4 c0100000 fc917c20 nt!ZwCreateFile+0x11 fc917c44 f8d80088 ff830fa4 e14bb690 ff830fcc rdbss!RxTdiOpenAddress+0x80 fc917c80 f8d2bded ff830fcc ff830fa4 fc917cbc rdbss!RxCeBuildAddress+0xb6 fc917ce4 f8d29a91 fc917cfc ff81ee70 ff9aa8d0 mrxsmb!MRxSmbpBindTransportCallback+0x11d fc917d10 fc77dc62 00000001 00000009 ff9a3c28 mrxsmb!MRxSmbPnPBindingHandler+0x11f fc917d34 fc77e2e8 fc77f208 ff81ee70 00000001 TDI!TdiNotifyPnpClientList+0x164 fc917d58 fc77c3e4 fc77f220 00954d68 fc77f230 TDI!TdiExecuteRequest+0x382 fc917d74 804e426b ff954d68 00000000 81a88b30 TDI!CTEpEventHandler+0x32 fc917dac 8057be15 fc77f220 00000000 00000000 nt!ExpWorkerThread+0x100 fc917ddc 804fa4da 804e4196 00000001 00000000 nt!PspSystemThreadStartup+0x34 00000000 00000000 00000000 00000000 00000000 nt!KiThreadStartup+0x16 FOLLOWUP_IP: mvstdi5x+6ca0 fa4a5ca0 5d pop ebp SYMBOL_STACK_INDEX: 2 FOLLOWUP_NAME: MachineOwner SYMBOL_NAME: mvstdi5x+6ca0 MODULE_NAME: mvstdi5x STACK_COMMAND: kb FAILURE_BUCKET_ID: 0xC9_mvstdi5x+6ca0 BUCKET_ID: 0xC9_mvstdi5x+6ca0 Followup: MachineOwner --------- BR Sukhvinder Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67663
  - 8
    - Unplug the usb power cause a system crash in winxp+sp2 I made a bda driver for our usb box. It seems working well until I unplug the power wire when it running in winxp+sp2.(it saids that it did not crash in win2k or winxp+sp1, so strange.) In the read data routine, I insert the irp to a list and in the complete routine I remove it from the list. Like this: (I simply use the global variables.) Insert: --8<---------------cut here---------------start------------->8--- KeAcquireSpinLock(&g_ks_pl, &g_old_pk_irql); InsertTailList(&g_irp_list, &p_irp->Tail.Overlay.ListEntry); KeReleaseSpinLock(&g_ks_pl, g_old_pk_irql); status = IoCallDriver(p_devobj, p_irp); --8<---------------cut here---------------end--------------->8--- Removal: --8<---------------cut here---------------start------------->8--- KeAcquireSpinLock(&g_ks_pl, &old_irql); if (IsListEmpty(&g_irp_list)) { KeReleaseSpinLock(&g_ks_pl, old_irql); return FALSE; } RemoveHeadList(&g_irp_list); KeReleaseSpinLock(&g_ks_pl, old_irql); --8<---------------cut here---------------end--------------->8--- After I unplug the power of the usb, winxp+sp2 would crash in usbport.sys. I commented out these codes, then unplug the power, no crash. I did not test the status of the irp, because I thought it was useless. I simply insert the irp to the queue and remove it after it completed. Could some one tell me what's wrong with my code? Advance thanks! Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67659
  - 9
    - Printer language monitor gets an error durring driver installation I have created a simple print language monitor which is having installation problems. When I try to install the driver I get the error "Printer driver was not installed. The specified print monitor does not have the required functions." I have gone through the DDK documentation and to the extent of my knowledge I have defined all of the required functions and returned them in a MONITOR2 structure. Does anyone know what is causing this error. Here is the code that I think is relevant to this problem, if you need anything else, I can post it too. My computer is running Windows XP SP2. //Structure to hold pointers to all the functions MONITOR2 pfn = { sizeof(MONITOR2), NULL, NULL, OpenPortEx, // OpenPortEx StartDocPort, // StartDoc WritePort, // WritePort ReadPort, // ReadPort EndDocPort, // EndDoc ClosePort, // ClosePort NULL, NULL, NULL, NULL, GetPrinterDataFromPort, NULL, NULL, NULL, NULL, NULL, NULL }; //Called by spooler to initiate language mon LPMONITOR2 WINAPI InitializePrintMonitor2(PMONITORINIT pMonitorInit, PHANDLE phMonitor) { //MessageBox(NULL, L"init print mon called", L"PrintPDF", NULL); //Fix size of MONITOR2 if it is on win 2k if(IsWin2K()) pfn.cbSize = MONITOR2_SIZE_WIN2K; return &pfn; } -WBuik Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67657
  - 10
    - How to generate CLASSGUID and PCMCIA device ID to write in the INF file Hi everybody, Iam writing Win 2k PNP drivers for PCMCIA 16 bit PC card. In that process, Iam trying to write .INF file, But I have two doubts in preparing that file. 1. What is CLASS GUID. How it can be generated.I saw some examples INF files in my system.In each file I observed "CLASS GUID". What is the procedure to generate CLASS GUID? 2. "PCMCIA\Manufacturer-Product-NNNN" NNNN is a four digit Hex code. I can write Manufcaturer ID and Product ID. But I was not able to create the four digit hex code. I used DTPL.exe to generate PCMCIA unique device id. I executed DTPL with our card CIS file as input. But It is not generating the device ID and displays as ... "Device ID cannot be created for the PC card" What could be the reason? Is there any problem in the CIS information or due to any other problem this message may come? Please guide me in sovling the above problems. Thank u, Mahender. Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67640
  - 11
    - Windows XP x64 crashdump problem I have a SCSI HBA serving as the boot controller in a dual processor hyper-threaded system running WinXP x64 edition. Upon generating a crash via Crash-On-Ctrl-Scroll or the HCT crashdumptest, I have seen proof via WinDbg that the runtime (miniport) driver is still running when the crashdump driver is being loaded. Specifically, I have seen an interrupt generated during crashdump initialization get serviced by the runtime driver. I have also seen the one second timer I have continue to run on the runtime driver. No need to explain what a driver collision like this can do to the hardware. If I disable hyper-threading and one of the processors, the problem goes away. Why isn't crashdump processing disabling the other processors? Thanks Scott Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67628
  - 12
    - on windows XP 64 bit platform, IoCallDriver cause system hanging hi All: I am porting a 32bit driver to windows 64 bit platform, my drivers is tow parts, one is a pcmcia ata driver for accessing media; the other is a filter driver for handling s1 s3 s4 power status, which is hook on pcmica bus drivers and my function driver. my drivers works well on windows xp 32 bit, but system resuming from hibernating(s4), sometimes after cover the progress of resuming, the system is hung.I traced my drivers, found that, after filter driver calling IoCallDriver, the system is hung. the following source code is for reading/writing register instead of HalGetBusData or HalGetBusOffset which are obsolete. ULONG ReadDWord( PDEVICE_OBJECT DeviceObject, USHORT Offset ) { ULONG RawData = 0; MBXConfigRegisterBufferRead( DeviceObject, &RawData, Offset&0xFC, sizeof(ULONG) ); return RawData; } NTSTATUS MBXConfigRegisterBufferRead( PDEVICE_OBJECT DeviceObject, // target device object PVOID buffer, //the read buffer ULONG offset, //buffer offset ULONG Length //the length of buffer ) { PIRP pIrp = NULL; KEVENT event; NTSTATUS status; PIO_STACK_LOCATION stack = NULL; PDEVICE_OBJECT AttachedPDO = NULL; IO_STATUS_BLOCK ioSattus; PDEVICE_EXTENSION pdx = NULL ; ULONG Transferred; pdx =(PDEVICE_EXTENSION)DeviceObject->DeviceExtension; KdPrint((" Enter MBXConfigRegisterBufferRead \n")); if( KeGetCurrentIrql() < DISPATCH_LEVEL ) { KdPrint(("KeGetCurrentIrql() < DISPATCH_LEVEL\n")); RtlZeroMemory( buffer,Length); KeInitializeEvent( &event, NotificationEvent, FALSE ); // //get the pdo of function 0! // AttachedPDO = pdx->NextLowerDriver;//LowerDeviceObject; if( NULL == AttachedPDO ) { KdPrint(("Error! The AttachedPDO is NULL")); return STATUS_UNSUCCESSFUL; } // //allocate a irp for next stack. // KdPrint(("Begin to build IRP \n")); pIrp = IoBuildSynchronousFsdRequest ( IRP_MJ_PNP, AttachedPDO, NULL, 0, NULL, &event, &ioSattus ); if ( pIrp == NULL ) { KdPrint(("Failed to build IRP \n")); return( STATUS_INSUFFICIENT_RESOURCES ); } //get the next pci stack! stack = IoGetNextIrpStackLocation( pIrp ); // Fill the IRP pIrp->IoStatus.Status = STATUS_NOT_SUPPORTED; stack->MajorFunction = IRP_MJ_PNP; stack->MinorFunction = IRP_MN_READ_CONFIG; stack->Parameters.ReadWriteConfig.WhichSpace = 0; stack->Parameters.ReadWriteConfig.Buffer = buffer; stack->Parameters.ReadWriteConfig.Offset = offset; stack->Parameters.ReadWriteConfig.Length = Length; // // this step will call the function 0 of pcmcia bus driver. // KdPrint(("Begin to send IRP \n")); status = IoCallDriver( AttachedPDO, pIrp ); KdPrint(("Have sent IRP \n")); if(!NT_SUCCESS(status)) { KdPrint(("iocaller failed!")); } if (status == STATUS_PENDING) { // Wait for completion KdPrint(("Wait the IRP completion \n")); KeWaitForSingleObject( &event, Executive, KernelMode, FALSE, NULL ); status = pIrp->IoStatus.Status; } KdPrint(("Read %x = %x\n",offset, *((PULONG)buffer))); } else { //irp level>=dispatch_level KdPrint(("KeGetCurrentIrql() >= DISPATCH_LEVEL \n")); Transferred = pdx->BusInterfaceStandard.GetBusData( pdx->BusInterfaceStandard.Context, PCI_WHICHSPACE_CONFIG, buffer, offset, Length ); KdPrint(("Read %x = %x\n",offset, *((PULONG)buffer))); if( Transferred == Length ) { KdPrint(("KeGetCurrentIrql() = DISPATCH_LEVEL---success\n")); status = STATUS_SUCCESS; } else { KdPrint(("KeGetCurrentIrql() = DISPATCH_LEVEL---failed\n")); status = STATUS_UNSUCCESSFUL; } } KdPrint((" Exit MBXConfigRegisterBufferRead\n")); return status; } thanks best regards Leon Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67617
  - 13
    - Receive send packet Hi All, I have the following scenario: A virtual Miniport driver that indicate a receive packet whenever a send command is issued, in order to receive a send packet by the stack. A protocol driver binds to this Miniport driver to send and receive packets from a user-mode application (via IOCTRL). This work if a packet is read from the Miniport driver by the protocol driver that is receive by the stack via a real network adapter. But if a write packet is issued from the user-mode application a send packet is commanded to the Miniport the packet is looped-back and indicated as a received packet, then the stack receives the packet as well as the protocol driver. This is because the protocol driver is bind to the Miniport and receives all packets from the Miniport. So how can I change this to not receive my own send packets but still receive those coming from the stack? Thanks. Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67615
  - 14
    - VideoPortInt10 Hi Shatskih, Our driver is simple kernel mode driver and I need to call VideoPortInt10().But this function requires first argument which I don't know how to get.What I study is display driver is transparent to other drivers and only filter driver/mini port drivers can call that function. Please tell me how to call this function from a simple kernel mode driver. thanks in advance, Krishna Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67614
  - 15
    - LPD service in Windows XP rejecting spool job from Mac We are facing a problem while printing from Mac to Windows XP using LPD service. Windows is getting the print job control file and removing immediately. We trace the problem and found the reason. Mac is sending 1TeraByte as Spool job length. Can we get any patch to solve the problem in windows xp LPD service? Is there any solution to solve this problem? Any pointers are appreciated. Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67613
  - 16
    - The address of a data from a virtual disk Hi experts: sorry for my pool english. i've changed the filedisk.sys and add the encrypt function. but i want to get the data's physical address on the virtual disk which is mounted with filkdisk. i don't know how. in the MajorFunction case of IRP_MJ_READ, i need the buffers's physical address on the virtual disk. thanks for all replyers Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67612
  - 17
    - Whats wrong with my Old driver? I have changed INF file of general\portio driver which is shipped with XP DDK. I have just just changed the ports configuration in INF file for accessing the ECP (LPT1) printer port of my machine though before installation I manually changed system assigned resources of ECP (LPT1) port which were assigned by OS to avoide any confilict. CHANGES that I've made in INF file to drive the ECP port by genport.sys [PortIO.LC0] ConfigPriority=DESIRED IOConfig=378-37b(3ff::) ; 10 bit decode ranging from 378 - 37B Now every thing works fine as far as I'm using genport.sys to read\write the printer port but don't know why my existing driver is not working any more , any idea? My old driver use same port addresses. Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67591
  - 18
    - Create bsod from user mode? Is there any user-mode equivalent of KeBugCheck, or some other way of causing a user-mode BSOD with a code that won't be easily confused with anything else (like 0xE2)? I have a hard-to-reproduce boot problem with a ps/2 keyboard filter driver. If everything is OK then I have a user-mode app restart the machine. If/when I can repro the problem I want something in user mode that'll cause me to drop into Windbg. (I know causing int3 will do it if I boot with /debug in boot.ini, but because the machine runs unattended and reboots every 5 minutes I wanted to try and use /crashdebug instead, so that when it goes wrong I only get the info relevant to the boot that fails) Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67587
  - 19
    - Display "New hardware" wizard on an orphanded device programmatically We have situations where the user selects "cancel" on the new hardware wizard dialogs before the driver is completely installed (apparently they get confused or something.) The driver files have been pre-installed using SetupCopyOEMInf. This is a USB device and if they unplug and re-plug the device in the wizard comes up again and works fine (at least on XP where I'm testing.) Is there a way to do this from a program? I can detect the device on the bus and that it wasn't setup correctly. Now I want to "reinstall" the device to set it up correctly. If I right click in the device manager it displays the new hardware wizard. I want to do this from my application, just cause the new hard found dialog to appear and again and do its normal thing. Any way to do this? Thanx! Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67586
  - 20
    - PC Card and slve mode DMA Hi all, Is it possible to use slave mode DMA with 16 bit Pc Card, and if so, is it effective, or are there better ways? Thanks in advance Guy Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67575
  - 21
    - HELP! - ZwWriteFile() from a hooked ZwOpenFile() always crashes Hi My driver is hooking ZwOpenFile(). In my hook function, except calling the original ZwOpenFile(), I also call a logging function that uses ZwWriteFile() to print log data to file. For some reason, each time I call my log function from ZwOpenFile() and ZwWriteFile() is called, I get a BSOD with UNEXPECTED_KERNEL_MODE_TRAP (7f). The log function uses mutexes for synchronization. Using this log function from another hooked function (ZwCreateFile) works ok. Attached WinDbg's dump analysis. Thanks ================================================================ ******************************************************************************* * * * Bugcheck Analysis * * * ******************************************************************************* UNEXPECTED_KERNEL_MODE_TRAP (7f) This means a trap occurred in kernel mode, and it's a trap of a kind that the kernel isn't allowed to have/catch (bound trap) or that is always instant death (double fault). The first number in the bugcheck params is the number of the trap (8 = double fault, etc) Consult an Intel x86 family manual to learn more about what these traps are. Here is a *portion* of those codes: If kv shows a taskGate use .tss on the part before the colon, then kv. Else if kv shows a trapframe use .trap on that value Else .trap on the appropriate frame will show where the trap was taken (on x86, this will be the ebp that goes with the procedure KiTrap) Endif kb will then show the corrected stack. Arguments: Arg1: 00000008, EXCEPTION_DOUBLE_FAULT Arg2: 80042000 Arg3: 00000000 Arg4: 00000000 Debugging Details: ------------------ BUGCHECK_STR: 0x7f_8 TSS: 00000028 -- (.tss 28) eax=0000018c ebx=8210e008 ecx=00000000 edx=e1dd2ad8 esi=ebd7c590 edi=82b24100 eip=f85a73ba esp=ebd7c000 ebp=ebd7c19c iopl=0 nv up ei ng nz na po nc cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00010286 Ntfs!_SEH_prolog+0x1a: f85a73ba 53 push ebx Resetting default scope DEFAULT_BUCKET_ID: DRIVER_FAULT LAST_CONTROL_TRANSFER: from f85a7cf6 to f85a73ba STACK_TEXT: ebd7c19c f85a7cf6 ebd7c590 8210e008 e1dd2ad8 Ntfs!_SEH_prolog+0x1a ebd7c384 f85a8ae9 ebd7c590 8210e008 e1dd2ad8 Ntfs!NtfsNonCachedIo+0x20e ebd7c580 f85a8c97 ebd7c590 8210e008 0110070a Ntfs!NtfsCommonWrite+0x1949 ebd7c6f4 804e37f7 82b24020 8210e008 82b88d10 Ntfs!NtfsFsdWrite+0xf3 ebd7c704 f864b3ca 804e8a39 00000000 ebd7c7bc nt!IopfCallDriver+0x31 ebd7c714 804e37f7 82b89020 8210e008 ebd7c76c sr!SrWrite+0xaa ebd7c724 ebd14074 00000000 ebd7c76c 828fb490 nt!IopfCallDriver+0x31 WARNING: Stack unwind information not available. Following frames may be wrong. ebd7c7bc 804ee6a6 82af7b0a ebd7c7e4 ebd7c878 SYMEVENT!SYMEvent_GetVMDataPtr+0x86d4 ebd7c898 804ee45d e249a00c e249a010 e249a010 nt!MiFlushSectionInternal+0x38b ebd7c8d4 805079bb 00000000 e249a00c 00000001 nt!MmFlushSection+0x1e0 ebd7c8ec 804f60ee 8201d008 00000000 00000000 nt!CcMapAndCopy+0x45d ebd7c968 804f5e75 8201d008 ba009107 ebd7c9ac nt!CcMapAndCopy+0x2fa ebd7c9f4 f85abb66 82af7b38 ebd7cbc4 00000003 nt!CcCopyWrite+0x28e ebd7cbe8 f85a8c97 81abd008 82ad8008 82ad8008 Ntfs!NtfsCommonWrite+0x1d2a ebd7cc4c 804e37f7 82b24020 82ad8008 82b88d10 Ntfs!NtfsFsdWrite+0xf3 ebd7cc5c f864b3ca 804e8a39 00000000 ebd7cd14 nt!IopfCallDriver+0x31 ebd7cc6c 804e37f7 82b89020 e2405c88 ebd7ccc4 sr!SrWrite+0xaa ebd7cc7c ebd14074 00000000 ebd7ccc4 828fb490 nt!IopfCallDriver+0x31 ebd7cd14 805784c0 827f5ac0 82ad8008 82af7b38 SYMEVENT!SYMEvent_GetVMDataPtr+0x86d4 ebd7cdc8 804de7ec 80000160 00000000 00000000 nt!NtWriteFile+0x602 ebd7cdc8 804ddc35 80000160 00000000 00000000 nt!KiFastCallEntry+0xf8 ebd7ce64 b9fff72f 80000160 00000000 00000000 nt!ZwWriteFile+0x11 ebd7cedc b9ffe58b ba007f00 ebd7d71c 00000000 dg!LogToFile+0x7f [@ 5311] ebd7d6fc 804de7ec ebd7d7d8 00100080 ebd7d7b8 dg!NewZwOpenFile+0xab [@ 4256] ebd7d6fc 804dcfdd ebd7d7d8 00100080 ebd7d7b8 nt!KiFastCallEntry+0xf8 ebd7d78c ebadb2ca ebd7d7d8 00100080 ebd7d7b8 nt!ZwOpenFile+0x11 ebd7d7dc ebadb963 ebd7d800 ebd7d808 ebd7d814 SPBBCDrv+0x32ca ebd7d81c ebaea53a e15a2ac0 e1fd9450 00000002 SPBBCDrv+0x3963 ebd7d858 ebaf4645 ebd7d930 00000005 00000006 SPBBCDrv+0x1253a ebd7d888 ebaf4376 ebd7d980 e1cec418 00000000 SPBBCDrv+0x1c645 ebd7d8c0 ebae5e5d 00000000 ebd7d980 e11f24f0 SPBBCDrv+0x1c376 ebd7d974 ebae3dcb e1c92410 ebd7d8ec ebd7d960 SPBBCDrv+0xde5d ebd7d994 ebae62d1 ebd7d9f4 829a89e0 e1c92410 SPBBCDrv+0xbdcb ebd7d9bc ebae8a86 00d7d9f4 829944c0 e1333c98 SPBBCDrv+0xe2d1 ebd7d9cc ebaebb6d ebd7d9f4 e17d7640 829944c0 SPBBCDrv+0x10a86 ebd7d9e4 ebaeb0d7 ebd7d9f4 e1019a30 ebb28220 SPBBCDrv+0x13b6d ebd7da24 ebd19788 829944c0 e17d7648 ebd1bad6 SPBBCDrv+0x130d7 ebd7da30 ebd1bad6 e17d7648 e1a63ed8 e17d7640 SYMEVENT!EventObjectDestroy+0x138 ebd7da4c ebd1bc7d e17d7640 ebd7daa0 e1a63efc SYMEVENT!EventObjectCreate+0x1b36 ebd7da5c ebd12f19 ebd7daa0 e1a63efc ebd7daa0 SYMEVENT!EventObjectCreate+0x1cdd ebd7da6c ebd1a8e8 ebd7daa0 81e73018 ebd7daa0 SYMEVENT!SYMEvent_GetVMDataPtr+0x7579 ebd7dabc 804e37f7 827f5ac0 81e73008 81e73008 SYMEVENT!EventObjectCreate+0x948 ebd7dacc 8057069a 82b0ee18 8240ec14 ebd7dc74 nt!IopfCallDriver+0x31 ebd7dbac 8056316c 82b0ee30 00000000 8240eb70 nt!IopParseDevice+0xa58 ebd7dc34 8056729a 00000000 ebd7dc74 00000240 nt!ObpLookupObjectName+0x56a ebd7dc88 80570b73 00000000 00000000 01001b00 nt!ObOpenObjectByName+0xeb ebd7dd04 80570c42 ebd7e7dc 00000020 ebd7e77c nt!IopCreateFile+0x407 ebd7dd60 80570d0a ebd7e7dc 00000020 ebd7e77c nt!IoCreateFile+0x8e ebd7dda0 b9ffe575 ebd7e7dc 00000020 ebd7e77c nt!NtOpenFile+0x27 ebd7e5d4 804de7ec ebd7e7dc 00000020 ebd7e77c dg!NewZwOpenFile+0x95 [ @ 4235] FOLLOWUP_IP: SYMEVENT!SYMEvent_GetVMDataPtr+86d4 ebd14074 894618 mov [esi+0x18],eax SYMBOL_STACK_INDEX: 7 FOLLOWUP_NAME: MachineOwner SYMBOL_NAME: SYMEVENT!SYMEvent_GetVMDataPtr+86d4 MODULE_NAME: SYMEVENT IMAGE_NAME: SYMEVENT.SYS DEBUG_FLR_IMAGE_TIMESTAMP: 423f8ec8 STACK_COMMAND: .tss 28 ; kb FAILURE_BUCKET_ID: 0x7f_8_SYMEVENT!SYMEvent_GetVMDataPtr+86d4 BUCKET_ID: 0x7f_8_SYMEVENT!SYMEvent_GetVMDataPtr+86d4 Followup: MachineOwner --------- Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67563
  - 22
    - Installing driver in user mode Hi, I know that it's typically impossible to install driver with user priviledges, but I've heard that using MSI would enable this. Anybody care to clarify? cheers Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67562
  - 23
    - when Usb Communication,pull off usb termianl and return 3408 Dear all: the USB driver,that i use Usbscan.sys by the instruction DeviceIoControl();but when pulling off Usb terminal in communication,the DeviceIoControl() have not return the ERROR,and return 3408 when loading the long of Data by communication. why the DeviceIoControl retun 3408? does it by accident? may anyone can helo me? thank you. Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67561
  - 24
    - How to purge file cache Hi, I'm trying to purge a specific file data cached by the OS... How do I accomplish that? I've tried to use various techniques (incl setting the flag FILE_NO_INTERMEDIATE_BUFFERING) but the data is still cached. I'm trying to force the system to re-read data in a dvdrom. Apparently, the DVD rom won't be accessed if part of the data (few hundred megs) are cached in the file system. I want this to be accssed each time. cheers, Kenny Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67560
  - 25
    - Location of driver services in Windows XP64 and Windows XP Hi, In Windows XP if a driver service does not have a ImagePath ( or a BinaryPathName) then the SCM constructs the path as %Windows%\System32\drivers\<service name>.sys Two questions regarding this. 1. Can this default construction be changed to point to another location in WindowsXP ? 2. Is this behavior of construction of default path also occur in Windows XP64 ? If yes, then is the constructed path same as that of Windows XP ? Thanks Gaurav Chandna Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67558
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  - 1
    - Camera driver in WinXP64 can't show my own property page Hi all, These days I am porting my driver from 32-bit to 64-bit in winxp. The driver is working fine in winxp32. now I have rebuilt my driver for amd64 successfully. I can see peview video in winxp64 now. But I can't show out my property page. I have check the registry for my pegas. It is registered successfully in MediaSet. I have try to use visualstudio 2005 to build x64 version or use my origanal 32-bit property.ax. They two are no use. And I use the vs2005 to trace in debug. I found that the *.ax is nerver be called when amcap want to show my property page. It nerver get into the DllGetClassObject function. Does anyone can tell me how was it happened? How to solve it? Thanks. Saxen. Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67553
  - 2
    - =?Utf-8?Q?How_can_I_use_DeviceIOContorol=28=29?= Hi all, I want to disable a port of USB according to USB device ID and No. of port. I find follow controlcode in usbioctrl.h #define IOCTL_USB_HCD_DISABLE_PORT CTL_CODE(FILE_DEVICE_USB, \ USB_IOCTL_INDEX+13, \ METHOD_BUFFERED, \ FILE_ANY_ACCESS) #define IOCTL_USB_HCD_ENABLE_PORT CTL_CODE(FILE_DEVICE_USB, \ USB_IOCTL_INDEX+14, \ METHOD_BUFFERED, \ FILE_ANY_ACCESS) soï¼?I think it should can do, but I don't know how to do. Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67552
  - 3
    - Loading kernel drivers with Service Manager Some samples in the DDK dynamically load and unload a kernel driver, without any install or INF files, using the service manager. Sounds great for quick development and testing some type of drivers. Is there are documentation on what limitations this method have. I know that PNP won't work. Anything else? Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67551
  - 4
    - NdisAllocatePacketPoolEx Question Does ProtocolReservedLength have to be no more than PROTOCOL_RESERVED_SIZE_IN_PACKET (16) bytes? I seem to recall that the value for ProtocolReservedLength can be any length. Thanks! Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67542
  - 5
    - Firmware binaries and where to store them We have firmware, represented by binary files, stored on the hard drive, which are loaded onto our chip (which resides on a PCI card) by an unclassified WDM driver in Windows XP. During development, we have just installed those files into %SYSTEMROOT%\system32\ourfolder, but everyone on our team has access administrative access to those directories. If a consumer installs our card as an administrator and wants another user, without administrative privs, to use the card, this is a problem, right? In the DDK, under Still Image Devices...File System Access, I found a note that a driver could use the "All Users" profile, and create a subdirectory under the Application Data directory. Is this the best place to store my binary firmware images? When I install stuff and I want to keep record of it in the system registry, should I put it in HKEY_LOCAL_MACHINE/SOFTWARE/MYFOLDER? Thanks in advance Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67529
  - 6
    - Safe String Functions on win2k Hi can i use the Safe String Functions with win2k ddk? (do the include and link with the lib..) ? i need a safe replacment for sprintf... Thanks Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67520
  - 7
    - stream header in single bulk packet in video class uncompressed bulk stream We're writing a video class device using XP SP2 built in driver. (Uncompressed, YUY2, 640x480, in bulk mode) Is it possible to send the stream header (as video class spec 2.4) at the beginning of a new frame in a separate packet, without any video data following in the same packet ? This is much easier when interfacing to external sensors without any external FIFO between, we can do that in the idle time between each frame. But seems that when we do this, Graphedit shows just a black screen. When we append some "test" YUY2 data, we see the test image. But "appending" video data in the same packet would be difficult, when interfacing to the real sensor (we're using FX2LP in slave fifo mode). Any experience on this ? Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67518
  - 8
    - Windows Vista Mainboard Drivers Problems I have installed Windows Vista (Beta 1) on my pc but there was a great problem. My mainboard is a Gigabyte Intel Chipset and Windows doesn't install the good drivers. I tried installing the "old" ones (Xp drivers) but it didn't work. And since the mainboard is not set properly there is no way I can set up my soundcard (wich is onboard Realtek AC'97) or my network adapter (PCI - Realtek). Everytime I install any of them my PC simply resets and Windows restarts. Another strage thing happening is that windows detects automaticly my network card but loads it's own but it doesn't set it correctly. When I checked the system configuration from Hardware Manager, I noticed that at the PCI bridge section -> Resources there is a messege that says that it is not functional. I certanly would like to get this working so any advice would be great. Thanks. Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67517
  - 9
    - Retrieving page data from bitmap driver I am working w/ the sample bitmap driver from the most recent ddk. The current sample renders multi-page documents into a single large output bitmap file. I want to capture the bitmap data for each page and then pass it to an external dll. Currently, I am capturing the entire bitmap data in EndDoc. Where is the best place to capture page data? Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67512
  - 10
    - Urgent - Mutex does not lock Hi I have a simple function that logs information in my driver. Most of the implementation is ZwWriteFile that is synchronize by a kernel mutex (i use MUTEX_ACQUIRE( LogMutex ) and alike). I have a DbgPrints befoer & after the mutex, and inside the code. For some reason, it seems that sometims there are 2 threads in the code section that supposed to be synchronized.. also, i somtimes get a BSOD from ZwWriteFile and i think this is the reason. Any idea why the mutex isn't working ? Thanks. Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67510
  - 11
    - vista driver compatibility Hi, A few general questions about device drivers in Windows Vista: - Will drivers for Windows XP work in Windows Vista? - If drivers are not compatible, how much work will it be to adapt them? Are there huge changes or is it a matter of recompiling with the new DDK? As you can see, I am not a driver developer myself, but I really need this information in order to push our suppliers in updating drivers. Maybe you can point me to some articles that answer these questions. With kind regards. Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67501
  - 12
    - How can i get the Windows Vista beta1? If i stoped the order of MSDN Subscriber for half year? poly Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67493
  - 13
    - More 64 bit porting issues I hope someone can shed a little light here. I am trying to install a driver based on the bulkusb sample. It was recompiled successfully in an XP IA64 checked environment. The DDK is from the July 2005 DVD. I'm using VS .net 2003. No warnings, compiler linker state code being built for IA64. The target machine is a Dell 380 (Pentium D) and XP x64 Edition Version 2003 SP1. I'm building the driver on a 32-bit platform. The inf file was modified to use the decorations for ntia64. That got me beyond the "can't find software" hurdle. The New Hardware wizard finds the driver OK and then complains about not having a valid certificate but gives the option to install anyway. I select OK to install anyway. It then states "...driver is not intended for this platform". I've also built it using the Windows Server 2003 DDK for IA64 with the same results. There must be something else? Thanks for any pointers. Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67479
  - 14
    - How to detact a objects (Vector, text, or Image) in a customed printer driver Any one had any experience on detecting a object in customed printer driver level? Unlike in UNIDRIVER, to detect vector objects I have to intercept DrvFillPath, DrvStrokePath , but how to do it? It got to go through interpret CLIPOBJ or other parameters of these functions. Thanks in advance Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67469
  - 15
    - USBD support for Interrupt OUT transactions Am I correct in reading the DDK docs that UsbBuildInterruptOrBulkTransferRequest only supports interrupt IN transactions and not OUT transactions? TIA, SteveB, MCSD Welch Allyn, Inc. Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67467
  - 16
    - Virtual CDRom Control Panel Is source code available for the "unsupported" Virtual CDRom Control Panel driver? This is the MS utility that will mount an ISO image as a device. Is there an open source equivalent? -- Still trying to build a perpetual motion machine Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67464
  - 17
    - how to create user process in kernel mode ? Dear All: please help me,thanks. Br, Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67454
  - 18
    - hook to DrvGradientFill does not work in my Customed 2k/XP printer driver Hello, Every one: I need some help on my current project. According to MSDN's document, graphic drivers can optionally support DrvGradientFill() by setting HOOK_GRADIENTFILL flag when it calls EngAssociateSurface or EngModifySurface. we have a costomed printer driver using a GDI managed surface with standard bitmap format. I was trying to recognize a graphic (vector) object (filled with a Gradient color) by intercepting DrvGradientFill(). Somehow, if I hook up DrvGtadientFIll() in printer driver, and trying to print a Gradient object from MS WORD 2003, GDI just calls DrvFillPath() and DrvStretchblt(), never calls DrvGradientFill(), Any body give me a hint? Thanks in advance, Xiao Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67453
  - 19
    - Help me in writing win 2k Plug n Play driver for PCMCIA card Hi Everybody, We have win 2k device drivers(non plug n play) for PCI based add on card.Now we started writing Windows 2K device drivers(WDM, Plug n play) for 16 bit PCMCIA PC card.We are using ZILOG PCMCIA Adapter chip in our card. We filled the device related information like port base address,Port Range,Memory Range,Memory base and IRQ through Card Information Structure(CIS) touples. In case of pci card to detect a device we can check for Device ID and Vendor ID. How we can detect a PCMCIA device? For PCI card drivers we will get allocated resources from CM_RESOURCE_LIST structure. We can use that information as per standardized PCI configuration registers. In case of PCMCIA drivers, Allocated resources will be stored in the same CM_RESOURCE_LIST structure or no? If yes, in which format it is? Is it like same standardized PCI configuration registers? or any? Please guide me in writing the drivers for pcmcia card. If any mistake I have done in explainig my problem or if Iam going in a wrong way. Please guide me in right direction. Thank u Mahender Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67448
  - 20
    - Could i use two or more cancel- safe-queues ? Could i use two or more cancel- safe-queues with different LIST_ENTRY declare and SPIN_LOCK, but share the callback functions? ex: LIST_ENTRY for read irp / LIST_ENTRY for write /LIST_ENTRY for device io control .... share the same call back function"csqInsertIRP". poly Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67439
  - 21
    - How to know if the last boot was successfull Hi Is there some registry key (or something else) that i can read from a boot driver in order to know if the last boot was successfull? (no BSOD) And if there was a BSOD, is there any way to know what driver caused it, or what was the last loading driver? Thanks Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67436
  - 22
    - storage filter, error when sector read redirect I write a storage filter driver; and I want to implement this function: Give sector5 when get sector0 I use this method: when(Parameters.Read.ByteOffset==0) Parameters.Read.ByteOffset=512*5 but I got that winxp auto reboot after a blue screen this is my code below: ///////////////////////////////////////////////////////////////////////// FilterRead( IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp ) { PIO_STACK_LOCATION currentIrpStack = IoGetCurrentIrpStackLocation(Irp); PIO_STACK_LOCATION nextIrpStack = IoGetNextIrpStackLocation(Irp); ... // Copy current stack to next stack. *nextIrpStack = *currentIrpStack; if(currentIrpStack->Parameters.Read.ByteOffset.QuadPart == 0) { // It's not matter to deleting this line currentIrpStack->Parameters.Read.ByteOffset.QuadPart = 512*5; // if add this line, // blue screen appear and auto reboot when winxp is booting nextIrpStack->Parameters.Read.ByteOffset.QuadPart = 512*5; } IoSetCompletionRoutine(Irp, RmFilterIoCompletion, DeviceObject, TRUE, TRUE, TRUE); return IoCallDriver(deviceExtension->TargetDeviceObject, Irp); } Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67433
  - 23
    - need help! Hello, I want to write a legacy multimedia driver which work in user mode. I did read MSDN and search the web and I have some understanding on how it would be implemented but I have some questions: 1- Is there any sample code that I can use as the base for development? 2- Do I need a specific version of DDK to develop such driver? 3- If I develop such driver, is it working with all versions of windows? Best regards Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67425
  - 24
    - Driver for a custom USB audio device Hello, This is a driver hierarchy for a USB audio device. http://msdn.microsoft.com/library/en-us/AudStream/usbaudio.wmf Let's assume an USB audio device which has extra functions. For example, LEDs on device, equalizer, 5.1 channels, etc. Where is a starting point of writing a driver of the device? Do I need to write a driver which replaces USBAudio or cooperate with USBAudio driver? Thanks. Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67397
  - 25
    - PCI Port Replication for boot drivers? Greetings! I've a situation where NIC drivers are bound to an NDIS IM driver and a more regular filter driver, and in the process are made to be boot drivers (Start=0), in order to get the virtual disks set up early enough in the boot process (i.e. disk activity is sent across the network, and the presence of disks is simulated to Windows). What I need to do is to-by hand it appears-make the NIC appear as if its been installed in other slots-ones its never been installed in-for clients with the same NIC in different slots (same motherboard type). So basically I have to go to HKLM/System/CCS/Enum/PCI/VendXX_DevXX.../ and create an entry for each slot I want to go into. The entry here has the form A&B&C&D, where A,B,C,D are numbers of unknown origin. A seems to correspond to PCI bus?, B is unknown, C might be function, and D is unknown. One thing I could do is insert a card in each PCI slot and see how they're rendered in the registry, but that's non-deterministic to say the least. Any ideas about how I might otherwise tackle this problem? I can't rely on the standard DIFx tools (at least as I understand them) to pre-install a driver, because that requires PNP, which comes later in the boot process for a boot driver-too late for me, it appears. Any ideas are welcome... Thanks! Best, Steve Tag: DIFxApp Legacy Mode on Windows 2000 Tag: 67391

I have an installation for an unsigned driver that I have configured for
legacy mode (flags set to 0x8 in the MsiDriverPackages custom table). It
works fine on XP but fails on 2000. The error code that I am seeing from
DIFxApp is 0x800B0100 which I believe indicates a signature problem. What
else do I need to do to get this to work?

Mike

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