how to find out at kernel level if a drive Letter is map network d

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  - 1
    - Kernel Polling for Correctable Machine Checks Is it possible to disable the Windows kernel polling for correctable machine checks on an AMD processor? I have other functionality that does the polling for these types of errors so they can be logged to a BMC and I am getting race conditions where some of the errors are caught by the OS and some are caught by my functionality. I'd like to be able to disable the OS and allow my functionality to handle all of the correctable errors. Thanks. Bob Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60530
  - 2
    - Driver for USB Flash Drive wanted - Desperate pl. HELP Hi, Sorry for spamming to most popular news groups :) I am desperate and I dont think a lot of people visit drivers news groups. I bought a Jetway iVogue 512 MB Flash USB drive recently. It did not come with driver for Windows 98. Could not locate Manufacturer website though I googled all I could. Can some one tell me how to get a Manufacturer/ Generic driver for this device ? Appreciate any help. Thanks Sanchez Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60526
  - 3
    - ddraw.lib Hi All, I have a driver for WIN CE 4.2 OS, Mydriver.dll. In this driver I need to use direct draw objects. So, included ddraw.lib under the linker options. When I run the dll module, I get the following error: ddraw.lib(ddmain.obj) : error LNK2005: _DllMain already defined in MyDriver.obj MyDriver.dll has the entry point as DllMain and ddraw.lib also has the entry point as DllMain and hence the multiply defined symbols. How can I overcome this? I cannot do away with ddraw.lib. Thanks in Advance, Johns Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60523
  - 4
    - RtlPrefixUnicodeString WindXPDDKSp1 I'm trying to use RtlPrefixUnicodeString in my driver on XP. Can someone *please* tell me: 1. Why my project, built within the standard Build Environment shells provided with the DDK install, can't find ntddk.h 2. Why the ddk doco doesn't tell me which lib to link to use RtlPrefixUnicodeString 3. Why linking with ntdll.lib causes my driver to fail loading. Regards, Mark Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60519
  - 5
    - COM port application snooping I have a few devices that connect to PC using COM ports. I want to develop a protocol. Application will open the COM port(non-exclusive access) and send a protocol message. When it receives proper response(if at all) application knew the device and continues to talk. If the data is not expected response, may be this COM port is in use by some other application. So how can I snoop data and take it if it for my application and 'not capture' it if it is not for my application. I am not sure if I can achive it at user level itself. Do I need to dig into driver level. Is upper filter driver needed on all COM ports? Please give guidance on how I can accomplish this simple(for my boss), but not so simple. People who worked on embedded devices think COM port is piece of cake, but dont believe PC side complexities. Atleast educate me complexity here. I saw posts on virtual COM ports, but here I am not looking for any virtual COM ports, only existing ports. May be this snooping is needed on virtual COM also because from PC application all are same, but I dont need to develop any virtual ports. Thanks, Raj Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60517
  - 6
    - Asking TDI send packets without calling TdiBuildSendDatagram Hi, I previously used TDI to send UDP packet, by calling TdiBuildSendDatagram, passing destination information. TDI will build the UDP packet for me. Now I'd like to build the packet myself. Is it possible that I can pass the constructed UDP packet to TDI, just ask TDI to send it? (By going through DDK, it looks like I can construct the IRP and make the TDI_SEND_DATAGRAM request. Is that the correct way?) Thanks, Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60501
  - 7
    - Monitor CDROM read/write operations using filter driver Hello I want to monitor read and write operations from CDROM (on win xp and 2000). >From what I've read so far, I understand that I need an upper filter driver over scsiport.sys, and to monitor writing for example I need to check for IOCTL_SCSI_PASS_THROUGH. Is this correct? Any guidance on how to do it? Does this method monitor writing from all burning programs? Can anyone supply me with information about ASPI, IMAPI and why CD writing is done through the SCSI bus and not through the cdrom driver? Thanks, Sharon Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60498
  - 8
    - Find out the source port of socket created using ZwCreateFile Hi, I am using ZwCreateFile to create a raw udp socket, with dynamic source port. After creating the socket, how can I find out what the source port is? //code looks like: Status = ZwCreateFile ( (PHANDLE)&AddressHandle, GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, &ObjectAttributes, // object attributes. &IoStatusBlock, // returned status information. 0, // block size (unused). 0, // file attributes. FILE_SHARE_READ | FILE_SHARE_WRITE, // share access. FILE_CREATE, // create disposition. 0, // create options. EaBuffer, // EA buffer. Length); // EA length. Thanks Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60497
  - 9
    - Trying to send multiple small IRPs -- thread hangs? I have a problem with my driver which is a disk filter. I have to break up read/write requests into multiple smaller requests to send to the disk driver. IoMakeAssociatedIrp() is exactly what I need, but the DDK states that IoMakeAssociatedIrp() can only be used by the top-most driver (FSDs). Heeding the DDK's warning, I have instead written code that calls IoBuildSynchronousFsdRequest() to build an IRP to be sent synchronously to the disk driver. The code is essentially copied verbatim from the DDK samples: KEVENT ke; PIRP Irp; KeInitializeEvent(&ke, NotificationEvent, FALSE); Irp = IoBuildSynchronousFsdRequest(...); stat = IoCallDriver(NextDevice, Irp); if (stat == STATUS_PENDING) KeWaitForSingleObject(&ke, Executive, KernelMode, FALSE, NULL); For some reason all threads that go down this code path end up hanging in IoCancelIrp() when they try to terminate. My event gets set to indicate that the IRP has completed, but the IRP is still queued to the thread. Since the kernel does not BSOD, I presume IoFreeIrp() isn't actually called. My question is two-fold: 1) Is there any reason why IoMakeAssociatedIrp() wouldn't work? I don't see any intrinsic reason for the DDK's stern warning against using this in a lower-level driver. 2) If IoMakeAssociatedIrp() is out of the question, why is my driver causing threads to hang? TIA -Matt Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60496
  - 10
    - multicast configuration on windows What are the configurations I need to setup to respond to multicast packets ? I am working on Windows 2003 server, I start a ping to 224.0.0.1, I dont get response back from my own server or the other windows server which is in the same subnet. But I am getting responses back from linux hosts which are also on the same subnet. Thanks Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60488
  - 11
    - TDI driver calling ClientEventReceive handler problem I have a TDI driver (for a message-oriented protocol, not TCP/IP) which I am trying to run with a WinSock interface by using a helper DLL. The basic functions such as bind, accept, connect, recv and send are working, but I have found a problem when testing the select function which is not indicating when data is available for reading. The driver in its original form did not provide for the registration of a ClientEventReceive handler, so I have had to change the code to cater for this. Now, when data is received and I call the handler, it is always returning STATUS_DATA_NOT_ACCEPTED: this is with a test program where a single byte of data is available and the ReceiveFlags parameter is set to TDI_RECEIVE_NORMAL | TDI_RECEIVE_ENTIRE_MESSAGE. I have traced into the handler code and can see that it is checking AfdPollListHead which indicates that there is nothing on the list, though of course without access to the AFD source code it is impossible to tell whether this is really relevant to my problem. Does anyone have any ideas about what might cause this problem? Am I right to assume that the WinSock select depends on the ClientEventReceive handler accepting the data? Thanks, Geoff Oakes Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60487
  - 12
    - Hyper-Threading Technology I have a problem with my PCI device driver ( Windows XP). It does not work properly on computers with Hyper-Threading Technology CPU. Even if I canceled Hyper-Threading option in the BIOS Setup! The computer has stuck after a few hours of work. That not happened on computers without Hyper-Threading. This is an example of my code: affinity = KeQueryActiveProcessors(); vector = HalGetInterruptVector(deviceExtension->InterfaceType, deviceExtension->BusNumber, deviceExtension->InterruptLevel, deviceExtension->InterruptVector, &irql, &affinity ); What I do wrong? Thanks. Victoria Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60485
  - 13
    - VirtualPC & SoftIce Hi, I am tring to install Numegas SoftIce debugger on a VirtualPC WinXP, the installation succeed BUT when I try to start SoftIce ( Concerning it was installed in Manual startup mode ) I get Catastrophic CPU faliure and the VirtualPC restart... I wonder... Is it possible to install SoftIce on VirtualPC? if so, what am I doing wrong? what should i do to enable SoftIce on VirtualPC ??? Any help, samples or pointers will be appreciated. Nadav http://www.sophin.com Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60483
  - 14
    - x64 driver Hi, I am developing storage driver. migrating for WindowsXP x64 edition from 32bit. I got link errors: 1>addev.obj : error LNK2001: unresolved external symbol __imp_KeGetCurrentIrql 1>isr.obj : error LNK2001: unresolved external symbol __imp_KeGetCurrentIrql 1>r592.obj : error LNK2019: unresolved external symbol __imp_KeGetCurrentIrql referenced in function R592_CreateClose 1>pnp.obj : error LNK2001: unresolved external symbol __imp_KeGetCurrentIrql 1>control.obj : error LNK2001: unresolved external symbol __imp_KeGetCurrentIrql 1>power.obj : error LNK2001: unresolved external symbol __imp_KeGetCurrentIrql 1>addev.obj : error LNK2019: unresolved external symbol __imp_KeInitializeSpinLock referenced in function R592_AddDevice 1>objchk_wnet_amd64\amd64\rimsptsk.sys : error LNK1120: 2 unresolved externals I'm usging Windows DDK 3190.1289. and using "Windows Server 2003 Free x64 Build Environment" instead of WindowsXP x64.(because WindowsXP x64 not found in menu ) Anyone have any help ? ---- ishikawa Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60478
  - 15
    - ServiceMain Hi... I am trying to call the API StartService(), which I assume in turn will call back my â??ServiceMainâ?? function. In the Servicemain function all I am doing is â??RegisterServiceCtrlHandlerâ?? followed by a SetServiceStatus() with the current state as SERVICE_RUNNING. Thatâ??s itâ?¦ However, with this my StartService() call fails with the following error â??The service did not respond to the start or control request in a timely fashionâ?? Not sure whatâ??s missingâ?¦â?¦ Thanks... Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60476
  - 16
    - CDRW I recently replace my CDROM hard drive with a CDRW 52x32x52 Rosewill and I am having problems. It does not display under "My Computer" nor does it automatically start working on a CD when you put in a software program, however if I put a CD in the CDROM drive, then go to "MY COMPUTER" it shows the 'D' drive and I have to double click to start my program running. WHY IS THIS? Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60466
  - 17
    - NDIS Miniport Serial Driver Hi, i currently have two modems attached on serial ports which i would like to run TCP/IP over when a link is established. Although i can get one machine to accept a connection and one to dial in, i ideally want a bi-directional link... that is either side can initiate a connection. From my exeperiments once a port is listening for incoming calls an outgoing connection cannot be made. This is purely with the available services on our XP machines. I have played about with the windows DDK and have seen the virtual serial port driver which emulates the responses of a Hayes AT modem. One of my thoughts is to have the modem appear as a network device under the network and dialup connections folder. When an incoming call is accepted the network device would be available, and appear disconnected at all other times. I would control the logical link (dialing and link detection) in the driver layer. >From my short searches on newsgroups it seems this question is similair to other peoples. Even if the bidirectional dial in / dial out can be done by other means, i am still interested in creating a network device which controls a device on the serial port for our propriatory radio modems. Many thanks for your time, Chris Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60462
  - 18
    - HPGL Plotter Driver Does one exist for XP ? Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60460
  - 19
    - NDIS_TASK_TCP_LARGE_SEND NDIS_TASK_TCP_LARGE_SEND structure member definition from MSDN Home > MSDN Library > Win32 and COM Development > Driver Development Kit > Network Devices and Protocols > Reference > NDIS > Structures Used by NDIS Drivers MinSegmentCount A miniport driver set this to the minimum number of segments that a large TCP packet must be divisible by before the transport can offload it to a NIC for segmentation. The transport will not offload a large packet to the miniport driver for segmentation unless the miniport driver can create at least MinSegmentCount segments from the packet. If a large TCP packet does not meet the minimum-segment requirement, the TCP/IP transport itself segments the packet into smaller packets. The 1st sentence and the 2nd does not seem to match each other. Is it the expected minimum segment count input from TCP/IP transport to NIC before segmentation offload (my interpretation from 1st sentence) or is it the expected minimum segments that the NIC segmentation offload can create for a given packet passed from TCP/IP transport (my interpretation from 2nd sentence)? Regardless, I am not quite sure why this parameter is important. How does any value other than 1 make sense? Anyone can explain? Doesn't "MaxSegmentCount" by NIC offload engine make more sense? If PDU is larger than MaxOffloadSize*MaxSegmentCount, the NIC offload engine won't be able to do the right segmentation. TCP/IP transport should not offload in this case. Thanks! Heng-Hsin Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60457
  - 20
    - network connection icons I am trying to figure out when and how network connection icons are created while a network device driver is installed. I see that this is directly related to the keys in the registry at HKLM\CurrentControlSet\Control\Network\{}, but what cases them to be created? The reason why I am interested is because I have a MUX IM based driver that keeps creating new entries upon installation and de-installation and I would like that to stop. -- davidg Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60433
  - 21
    - Is it possible to use named pipes in a kernel mode device driver? Hi, please forgive me if that's a stupid question, but I'm currently starting to write my first device driver. I'm trying to use named pipes in the devide driver code and therefore had to include kernel32.lib. The code is compiled and linked fine, but upon driver installation XP says that it cannot load the driver. If I remove kernel32.lib from TARGETLIBS, the driver is loaded without problems. Any help greatly appreciated. Thanks Michael Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60432
  - 22
    - Smartcard Device Path exerciser test fail Hi, I have two questions if anyone could help... 1) I have a smartcard driver that does not implement the IRP_MJ_READ or IRP_MJ_WRITE, however in the device path exerciser test, it pounds the driver with zwwritefile and zwreadfile requests. This of course gets rejected by the OS as I do not register any IRP_MJ_WRITE or IRP_MJ_READ handling routines. The test then says the DevPathExer has stopped making progress... Attempting to resume thread. Is this normal or do I need to do something about the WRITE and READ? 2) Also after the above occurs, the test will think the thread is hung and continue to the next case. the next case sends a zwDeviceIoControl command (which I can't find any info on) and hangs... in my windbg, I can see the message telling me an IRP dispatch handler has returned without passing down or completing this IRP or someone forgot to return STATUS_PENDING. When I do a !IRP, it tells me Irp is active with 2 stacks 2 is current but not much more info. It seems to be the IRP_MJ_DEVICE_CONTROL, but in my code that handles that call, all I do is pass the IRP to the smartcarddevcicecontrol API which is suppose to handle, complete, pass on...etc... the IRP for smartcard readers. Thus I'm not understanding why I'm getting the error. Anyone have any ideas? Thanks! Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60431
  - 23
    - _CL_ setting in DDK's setenv.bat Curious about these explicit settings in the DDK's setenv.bat (3790): set _ML_=/Zvc6 set _CL_=/Ztmp set _LINK_=/Tmp There seems to be no documentation of any of them anywhere, and the only reference appears to be in "i386mk.inc" in the entire DDK. I believe they have stayed like that for a while. Now that it gives a warning (warning D4002 : ignoring unknown option '/Ztmp') for each and every single user-mode component that I build with PREfast, I've come to a point that I'd like to understand better the intent behind these settings and what to do to get rid of the warning without introducing problems down the road (yep, I cannot bear with any dust in the code, and am living in a glass house 8-) Thanks in advance for any insight. Apologize if this is a wrong forum for the question, or if it was answered before (I did look left and right before the post). Regards, -Brian Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60430
  - 24
    - Printer driver installation from Windows 2003 Clustere server to W Windows 2003 Clustered server has a new method to install printer drivers. Previously, the admin had to install the printer drivers to the each node of the clustered server and delete the printers. Then he/she could install the printer driver to the clustered server. The new way is to install the printer driver to the clustered server directly from an outside the machine (no nodes for the clustered server). Installing the printer driver to the Windows 98 client fails if I use the new installation method. The installation process does not know where to find some/all driver files. But the old installation method does not have any problems. Is Microsoft aware of this issue? Is Windows 98 client officially not supported by Windows 2003 Clustered server? Is there a workaround or solution? Please let me know. Thank you. Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60428
  - 25
    - Printer Driver for Windows 2003 Clustered Server Printer drivers installed on NT4.0 client from the Windwos 2003 Clustered server has a serious performance problem with displaying the Properties and Printing Preferences. When I opened the Properties on NT4.0 client, "General", "Sharing", "Ports", "Advanced", "Color Management", and "Security" pages open fine. But the vendor specific pages load extremely slow. It takes about one to two minutes to open a page. Then when I press "OK" or "Cancel" button, it also takes the same long time to close the Properties window. Samething happens to opening the Printing Preferences page. I checked other vendor's drivers by installing them to Windows 2003 Clustered server and NT4.0 client environment. The same thing happens. Opening the vendor specific pages takes a long time. Could you please let me know if Microsoft is aware of this problem and if there is a walk-around or a solution? Thank you. SL Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60426
- Next
  - 1
    - Changing the name of a driver's DriverEntry entry point? The DDK says that this is possible, but I can't figure out how to do this. I tried to override the options to the linker, providing a new '/entry:' option, but the utility simply puts it's own "/entry:DriverEntry" at the end, after my change. The line that sets the driver's entry point is in makefile.new, but I can't figure out a way to override that setting (sets DRIVER_ENTRY macro) either from the command-line or from the SOURCES file. Any help would be greatly appreciated. Thanks in advance. Brian Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60414
  - 2
    - MOUSE_INPUT_DATA Hi everyone, According to www.microsoft.com/whdc/device/input/mcompat.mspx mouse data packet formats are of 3 bytes (standard PS/2) and 4 bytes (3 and 5 button wheel mouse). The definition of MOUSE_INPUT_DATA in DDK is of 24 bytes: typedef struct MOUSE_INPUT_DATA { USHORT UnitId; USHORT Flags; union { ULONG Buttons; struct { USHORT ButtonFlags; USHORT ButtonData; }; }; ULONG RawButtons; LONG LastX; LONG LastY; ULONG ExtraInformation; } MOUSE_INPUT_DATA, *PMOUSE_INPUT_DATA; What is the connection between them? Thanks, Liang Fu Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60412
  - 3
    - USB PC-to-PC I know USB is master/slave bus. Is there a way for talk between PCs over USB..I saw Netchip development board that makes a PC as slave, but is there any hub-like that allows two masters to talk and this acting as slave and bridge on both sides? Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60407
  - 4
    - what is class in INF for USB device We are developing a USB device which has no class. It is generic USB that follows standard and uses USB as communication pipe with bulk and Isoch end point. What shoould be the class of this device in client driver INF? Can I use 'USB' as class in INF file. Thanks, Raj Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60406
  - 5
    - connecting a virtual smart card reader Dear devs I am actually working on a virtual smart card reader with non-existing hardware. I could manage to write a device driver, which is now listed active in my device manager tree and does not claim any errors. I thought when I get this working, it would be listed in the smart card selection GUI also. But this is not true! I also have an USB card reader driver installed (from Schlumberger) which ist listed in both windows. Also when the reader itself is not connected to the system. This is exactly the effect I wanted for my driver. The same is true for the SCardListReaders function. When I use a NULL-Context it lists all readers that were ever introduced to the system (including mine). But when I use the real Context Handle it only lists the readers connected to the system, with exception of the Schlumberger reader which does not have to be connected. How can I manage to get my reader "virtually" connected like the Schlumberger one? And how is the name I use in SCardIntroduceReader related to the driver/device? cheers, Vic Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60399
  - 6
    - Mouse drivers and Microsoft IntelliMouse Hi every one, I just began to learn device driver development and I thought computer mouse was probably the simplest device to start with. My first question to you is (1) Why none of the books that teach device driver development (I have collected most of them) use either non-realistic examples (where no real hardware is involved) or examples require a piece of expensive hardware (at least to a reader like me who does not write driver for living), but not use mouse or keyboard as examples? There is probably a reason for that, I would like to hear your comments. I bought a Microsoft IntelliMouse with tiltable wheel for horizontal scroll. Is really cool and I would like to understand how it works. I would guess it sends a larger data packet to accommodate the additional horizontal scroll data. I wonder how the driver works and how an application program with horizontal scroll ability (such as Excel) uses this data and carries out horizontal scroll. I checked www.microsoft.com/whdc/device/input/default.mspx but only found information (such as data packet formats, etc.) for other MS IntelliMouse (without horizontal scroll). My second question is (2) Does Microsoft publish information on the IntelliMouse with horizontal scroll and where can I find it? Thanks, Liang Fu Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60397
  - 7
    - concurrent read and iocontrol I have an multi-threaded application that calls ReadFile in one thread and DeviceIoControl in another thread on the same driver. In the situation that troubles me, the first thread is blocked in the synchronous read, while the second asynchronously issues the ioctl. Now the ioctl thread is apparently blocked until the synchronous read returns. Before the read returns the ioctl dispatch routine in the driver never even gets called (indicating that it is not a homemade lock contention). Is this normal in XP, or did I do something stupid in my driver (read routine)? Thanks for any suggestions! Arne Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60392
  - 8
    - Multiple lower filter drivers Hi All, I have a function driver for which i have two lower filter drivers for some reason. If an IRP is sent from the function driver, then which of these two lower filters would receive it? Would both of them receive this IRP (this sounds illogical)? I have a situation where, I want the first lower filter driver to handle the actual IRP processing from the function driver. I want the second lower filter driver to behave as a DUMMY FILTER DRIVER (doing almost nothing except interfacing with some application for receiving custom IOCTLs). It can be noted here that the function driver and the first lower filter drivers are third-party filter drivers while the DUMMY FILTER DRIVER is written by me. My problem is that all the IRPs, sent from function driver, are now currently received in my driver instead of the 3rd party filter driver. Is there a way to control this behavior? Am i missing something here? Hari. Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60388
  - 9
    - Language Monitor Query I am writing a language monitor and an application on Win-XP to show the status of the USB printer. Currently I am planning to get the printer status from the port monitor and to send it to the application via shared memory. What are the other responsibilities of a Language Monitor to work it correctly. There are some calls to SetJob and SetPort APIs in the PjlMon sample provided with DDK. Are these calls are sufficient for a Language monitor to work correctly? The USB printer, for which I am writing the language monitor, follows the PJL standard but some of the status codes are not according to the PJL standard. How will this affect to my language monitor and what changes I need to do in PjlMon sample to make my LM work. Please help.. Thanks, Nitin Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60386
  - 10
    - HIDclass Hi. Is it not possible to create an extra device object (HID collection) for a HID minidriver for user mode interaction with a keyboard driver. The systems input thread already uses the device object exclusively. But it's not possible to create another device object in the AddDevice() callback function, and use this one for usermode interaction? /Kim Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60384
  - 11
    - difference between pageable memory and nonpageable memory? What's the difference between pageable system memory and nonpageable memory? Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60371
  - 12
    - Print Driver Question I am WAY out of my league in this area, but I am a curious developer. There is a company called mimeo (http://www.mimeo.com/) that adds a really neat print driver to Windows. Basically, when I print out of a program like Word, it makes a graphic of what each page looks like and transmits that to their web site. This is very clever. True WYSIWYG. They then take the graphic to produce the printed output. How do they do that? Is that like a no big deal for one of you device driver gurus, or is that some pixie dust? Thanks! Curious mind wants to know. Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60365
  - 13
    - Cannot capture DirectDraw graphics in a mirror driver Hello! In my project, I need to capture everything that shows up on a primary monitor (in a dual-monitor system) and display parts of it on the second monitor (I mean, continuously - not as a single-frame capture). I wrote a mirror driver that sees all screen updates, and a user-mode application that gets those updates from the driver and draws them on the secondary monitor. It works fine for all GDI operations. However, I have a problem with DirectX-based graphics and video. The driver doesn't seem to see any of it. (The original version of the driver worked on a single-monitor Windows 2000 system, and it could capture pretty much everything we tried - though we didn't specifically try DirectX-based graphics, but, for example, the video player worked). Can a mirror driver capture the DirectX-related calls the same way it does the GDI calls? I'm looking through the DirectX DDK documentation, but it doesn't seem to support the "mirroring". Should I start researching in a different direction? If this makes a difference, I'm using the nVidea GeForce DVI video card. Thank you so much for any hints! Boris Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60363
  - 14
    - default DDK build options? When I use the DDK 'build' utility, various options for verbose output seems to be enabled by default - does anyone know how to quiet this command down a bit? The default 'build' output is something like: ======================================= BUILD: Adding /Y to COPYCMD so xcopy ops won't hang. BUILD: Object root set to: ==> objchk_w2K_x86 BUILD: Compile and Link for i386 BUILD: Loading c:\Progra~1\Window~4\build.dat... BUILD: Computing Include file dependencies: BUILD: Examining f:\projects\shoutdev\spm directory for files to compile. f:\projects\shoutdev\spm f:\projects\shoutdev\spm - 1 source files (3,276 lines) BUILD: Saving c:\Progra~1\Window~4\build.dat... BUILD: Compiling (NoSync) f:\projects\shoutdev\spm directory Compiling - serial.cpp for i386 BUILD: Linking f:\projects\shoutdev\spm directory Linking Executable - objchk_w2k_x86\i386\spm.sys for i386 BUILD: Done 2 files compiled - 3276 LPS 1 executable built SPM - 0 error(s), 0 warning(s) ======================================= It seems that 'build' options -S and -T are both on by default, and I don't see any way to negate these flags. [I am adding the DDK build to a larger project with lots of builds and compilers, and it's run by many people. I currently have to explain over and over why this new DDK compiler is so much more spammy that some of the other compilers used...] How do I modify these defaults [to quiet things down]? / Hannes. Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60360
  - 15
    - IM driver halted when virtaul adapter is created We have developed an NDIS IM driver and a notify object to support our driver. Windows 2003 (build Build 1289 and above) ============================= The driver is halted each time a new virtual adapter is created. For some reason with build 1289 and 1421 the halt routine is being called which triggers the driver being unloaded even though there are some VLAN already on the adapter. Thereafter DriverEntry is being called once again. This behaviour is not seen in earlier builds of Windows 2003 MUX behaviour ========== I observed the same behaviour even with the mux sample in DDK. Please advice as what is the change due to which the halt is being called in 1289 and above causing the driver Entry being called with each VLAN creation. Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60358
  - 16
    - calling DCOM object from within a driver function Hi In the DrvConvertDevmodeW Function of my printer driver, I create a COM-Object to find out, what printer my virtual driver has to simulate. And this COM element trys to connect to a DCOM element on a server somewhere in the network. Now, this normally works, but not during setup. So, is there a reason why this doesn't work during setup? And if yes, can I somehow find out, that my function is called during setup, so that I can prevent my driver from calling this DCOM-element? thanks for help MR Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60357
  - 17
    - WDM Book: How to compile the samclass.dll? Hi Learning how to programm a PCI card the Chap7/pci42/sys driver was compiled. The hardware wizard detected the new card but when trying to finish the driver installation it asks for the file samclass.dll but the file is not at the Chap15 directory. Trying to compile samclass.dll delivers an error on the samclass.rc, the afxres.h isn't found. 1.- Is there something wrong with the software installation or PC's setup? 2.- How is it possible to compile the samclass.dll file? Any help or information on how to solve the problem will be kindly appreciated Best Regards Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60353
  - 18
    - debug build sucess release build crashes I have a WDM filter driver for usbhub.sys for Win 98.It works fine when I load a checked build but release build crashes as soon as device is attached Any general pointers on how to resolve this would be welcome Is this a linking or optimisation issue ? Softice says PAGE FAULT (0e) ,Fault=0000 MSR LastExceptionFromIP=00000003 MSR LastExceptionToIP=0070046D Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60338
  - 19
    - Re: question for AllocateCommonBuffer and How to send user mode memory data to kernel I got two bugcheck code when I run the code that I list above,Can anyone help me?? Thanks a lot ===================================================================== DRIVER_IRQL_NOT_LESS_OR_EQUAL (d1) An attempt was made to access a pageable (or completely invalid) address at an interrupt request level (IRQL) that is too high. This is usually caused by drivers using improper addresses. If kernel debugger is available get stack backtrace. Arguments: Arg1: 0a070007, memory referenced Arg2: 00000002, IRQL Arg3: 00000001, value 0 = read operation, 1 = write operation Arg4: f864d60a, address which referenced memory Debugging Details: ------------------ WRITE_ADDRESS: 0a070007 CURRENT_IRQL: 2 FAULTING_IP: pci2002+660a f864d60a f3a5 rep movsd CUSTOMER_CRASH_COUNT: 6 DEFAULT_BUCKET_ID: COMMON_SYSTEM_FAULT BUGCHECK_STR: 0xD1 LAST_CONTROL_TRANSFER: from 805344b1 to 804f6471 STACK_TEXT: ef83ab28 805344b1 0000000a 0a070007 00000002 nt!MiWaitForInPageComplete+0x275 ef83ab44 ffffffff ffffffff ffffffff ffffffff nt!MmProtectMdlSystemAddress+0x267 ffffffff 00000000 00000000 00000000 00000000 0xffffffff STACK_COMMAND: .bugcheck ; kb FOLLOWUP_IP: pci2002+660a f864d60a f3a5 rep movsd FOLLOWUP_NAME: MachineOwner SYMBOL_NAME: pci2002+660a MODULE_NAME: pci2002 IMAGE_NAME: pci2002.sys DEBUG_FLR_IMAGE_TIMESTAMP: 3c3238b9 BUCKET_ID: 0xD1_W_pci2002+660a Followup: MachineOwner --------- ==================================================================== IRQL_NOT_LESS_OR_EQUAL (a) An attempt was made to access a pageable (or completely invalid) address at an interrupt request level (IRQL) that is too high. This is usually caused by drivers using improper addresses. If a kernel debugger is available get the stack backtrace. Arguments: Arg1: 0b515b4c, memory referenced Arg2: 0000001c, IRQL Arg3: 00000000, value 0 = read operation, 1 = write operation Arg4: 804fd4aa, address which referenced memory Debugging Details: ------------------ READ_ADDRESS: 0b515b4c CURRENT_IRQL: 1c FAULTING_IP: nt!RtlpStatusTable+242 804fd4aa 3b78fc cmp edi,[eax-0x4] CUSTOMER_CRASH_COUNT: 9 DEFAULT_BUCKET_ID: COMMON_SYSTEM_FAULT BUGCHECK_STR: 0xA LAST_CONTROL_TRANSFER: from 805344b1 to 804f6471 SYMBOL_ON_RAW_STACK: 1 STACK_TEXT: 8053f230 805344b1 0000000a 0b515b4c 0000001c nt!MiWaitForInPageComplete+0x275 8053f24c 00000001 f01fcec0 f01fce80 f01fce80 nt!MmProtectMdlSystemAddress+0x267 STACK_COMMAND: dds @$csp ; kb FOLLOWUP_IP: rdbss!_imp__ExAcquireResourceExclusiveLite+3 f01fcec0 ?? ??? FOLLOWUP_NAME: MachineOwner SYMBOL_NAME: rdbss!_imp__ExAcquireResourceExclusiveLite+3 MODULE_NAME: rdbss IMAGE_NAME: rdbss.sys DEBUG_FLR_IMAGE_TIMESTAMP: 3d6de248 BUCKET_ID: 0xA_rdbss!_imp__ExAcquireResourceExclusiveLite+3 Followup: MachineOwner --------- ===================================================================== Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60337
  - 20
    - serial driver name Hi, I am trying to find the driver name associated with a serial port based on the port name (COM1 or \Device\Serial0 ...). How can I do that using Windows API on Windows XP ? Thanks for your help Nicolas Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60334
  - 21
    - One Driverfor NT/2K/XP Hi, I am developing a device driver required to run on all the three NT/200/XP operating systems. Do I develop only one driver using NT DDK (or 2k/XP)? Or shall I have to compile one for each environment separately. In case it is possible to build only one driver(of course with few limitations) what additional settings do I need to make in MSVD 6.0? Arshad Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60333
  - 22
    - AVStream : How to change channel bandwidth of DVB-T BDA driver? Dear All, I am developing BDA driver for a DVB-T USB box. I met one problem and described it as following Q1: How to set channel bandwidth from 8 MHz to 6 MHz? It always increased or descreased tuner frequency by 8 MHz when I push "SeekUp" and "SeekDown" buttons of "Microsoft DVBT Network Provider" filter. Q2: How to set the initial scan frequency? PS : The default tuner frequency is 866MHz and the default channel bandwidth is 8MHz. Thanks, Edward Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60320
  - 23
    - Adding an entry to the LDT I'm sure this is going to generate a bunch of "You Hacker" or "You're crazy" responses, but this is legit. I'm trying to create a driver that will read from the SMBus BIOS interface. In order to do that, I have to add an LDT (or GDT) descriptor. I've looked around and found NtSetLdtEntries to be the only function worthy to do so, but I can't find any documentation on it except sample code to determine if your system is vulnerable to a hack attack. Is there anyone out there that can give me any idea of how to do this from my driver? Does anyone have documentation (official or otherwise) on the NtSetLdtEntries function? Thanks in advance... Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60311
  - 24
    - why name it ntoskrnl.exe "NTOSKRNL.EXE is a standard kernel driver with exports of entry points". I was always confused with this name. Why was it named as .exe? If it is kernel dll, why is it not .sys like any other kernel driver or dll ? How can we get .exe extension if we declare as TARGETTYPE=EXPORT_DRIVER in sources ? Thanks, Raj Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60308
  - 25
    - A problem with stream.sys Hi folks, Any and all suggestions / guesses / inspiration would be welcomed - I'm a bit stuck. I'm reluctant to blame MS code when I know that the likelihood is that I've messed up, but I just can't see how. I hasten to add that all the code seems to work fine on 99% of our test machines, it's just some IBM hyperthreaded dual xeons that appear to be giving traumas. It looks superficially similar to this problem : http://support.microsoft.com/default.aspx?scid=kb;en-us;812035 However, I've seen it on an XP service pack 2 machine with DirectX 9c, and a stream.sys with a later date than that mentioned in the KB report. To reproduce the problem, I have to work the machine fairly hard: transferring 50 MBit IFrame MPEG on one capture driver at the same time as 2 uncompressed YUV streams working out at about 40 MByte /second. Which, depending on the PCI speed & 32/64 bit might be getting a bit close for slower PCI hardware. 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The minidriver doesn't play with the data pointer, period. So, our minidriver decides it can't really handle this, logs an error, and returns the SRB to the stream class driver as STATUS_UNSUCCESSFUL. The stream class driver then chokes in the following manner: SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (7e) Arguments: Arg1: c0000005, The exception code that was not handled Arg2: f789f018, The address that the exception occurred at Arg3: f7334c48, Exception Record Address Arg4: f7334944, Context Record Address FAULTING_IP: STREAM!SCProcessCompletedDataRequest+e6 0008:f789f018 8b4010 mov eax,[eax+0x10] eax=00000000 ebx=86a617a0 ecx=86a142a8 edx=00000000 esi=83c263d8 edi=00000000 STACK_TEXT: f7334d24 f78a0a73 83c263d8 00000000 86ab9590 STREAM!SCProcessCompletedDataRequest+0xe6 f7334d40 f6d6c73b 00000003 83cc7d58 83c263d8 STREAM!StreamClassStreamNotification+0x5f f7334d54 f6d6777d 83c263d8 00000003 00000000 <mydriver>!MINI_CompleteStreamSRB+0x6b f7334d80 f6d7473f 83cc7eac 00000002 86a974d4 <mydriver>!VID_AttemptProcessing+0x1ad f7334dac 805ce794 86a974c4 00000000 00000000 <mydriver>!WT_ThreadFn+0x21f f7334ddc 805450ce f6d74520 86a974c4 00000000 nt!PspSystemThreadStartup+0x34 00000000 00000000 00000000 00000000 00000000 nt!KiThreadStartup+0x16 At this point, the contents of SRB and IRP are as follows. (I have a full memory dump if it will aid debugging). 0: kd> ??*pSrb struct _HW_STREAM_REQUEST_BLOCK +0x000 SizeOfThisPacket : 0x83e545e0 +0x004 Command : 1 ( SRB_WRITE_DATA ) +0x008 Status : -1073741435 +0x00c StreamObject : 0x83cc7d58 +0x010 HwDeviceExtension : 0x86a973f4 +0x014 SRBExtension : 0x83c26480 +0x018 CommandData : _CommandData +0x01c NumberOfBuffers : 1 +0x020 TimeoutCounter : 0xf +0x024 TimeoutOriginal : 0xf +0x028 NextSRB : (null) +0x02c Irp : 0x86a142a8 +0x030 Flags : 3 +0x034 HwInstanceExtension : 0x83e4855c +0x038 NumberOfBytesToTransfer : 0x83c2640c +0x038 ActualBytesTransferred : 0x83c2640c +0x03c ScatterGatherBuffer : 0x83c26494 +0x040 NumberOfPhysicalPages : 0 +0x044 NumberOfScatterGatherElements : 0x83ce8a30 +0x048 Reserved : [1] 0x83c140c0 0: kd> ??pSrb->CommandData.DataBufferArray[0] struct KSSTREAM_HEADER +0x000 Size : 0x86a39b98 +0x004 TypeSpecificFlags : 0 +0x008 PresentationTime : KSTIME +0x018 Duration : 0 +0x020 FrameExtent : 0 +0x024 DataUsed : 0 +0x028 Data : (null) +0x02c OptionsFlags : 0x200 0: kd> ??*pSrb->Irp struct _IRP +0x000 Type : -2288 +0x002 Size : 0x83e0 +0x004 MdlAddress : (null) +0x008 Flags : 0 +0x00c AssociatedIrp : __unnamed +0x010 ThreadListEntry : _LIST_ENTRY [ 0x86a142b8 - 0x86a142b8 ] +0x018 IoStatus : _IO_STATUS_BLOCK +0x020 RequestorMode : 1 '' +0x021 PendingReturned : 0x1 '' +0x022 StackCount : 2 '' +0x023 CurrentLocation : 4 '' +0x024 Cancel : 0 '' +0x025 CancelIrql : 0 '' +0x026 ApcEnvironment : 0 '' +0x027 AllocationFlags : 0x4 '' +0x028 UserIosb : 0x008c34a4 +0x02c UserEvent : 0x86a760a8 +0x030 Overlay : __unnamed +0x038 CancelRoutine : (null) +0x03c UserBuffer : 0x008be850 +0x040 Tail : __unnamed 0: kd> ??pSrb->Irp->AssociatedIrp union __unnamed +0x000 MasterIrp : 0x86a617a0 +0x000 IrpCount : -2035935328 +0x000 SystemBuffer : 0x86a617a0 0: kd> ??pSrb->Irp->Overlay union __unnamed +0x000 AsynchronousParameters : __unnamed +0x000 AllocationSize : _LARGE_INTEGER 0x8c34a4`00000000 0: kd> ??pSrb->Irp->Overlay.AsynchronousParameters struct __unnamed +0x000 UserApcRoutine : (null) +0x004 UserApcContext : 0x008c34a4 0: kd> ??pSrb->Irp->Tail union __unnamed +0x000 Overlay : __unnamed +0x000 Apc : _KAPC +0x000 CompletionKey : 0x00300012 0: kd> ??pSrb->Irp->Tail.Overlay struct __unnamed +0x000 DeviceQueueEntry : _KDEVICE_QUEUE_ENTRY +0x000 DriverContext : [4] 0x00300012 +0x010 Thread : 0x869c5824 +0x014 AuxiliaryBuffer : 0x804f484c "j,hH???" +0x018 ListEntry : _LIST_ENTRY [ 0x8057f97c - 0x0 ] +0x020 CurrentStackLocation : (null) +0x020 PacketType : 0 +0x024 OriginalFileObject : 0x86b9ab50 MH. Tag: how to find out at kernel level if a drive Letter is map network d Tag: 60306

Hi All,
on Windows 2k/XP/2k3
Is there a way to find out at kernel level if a drive Letter is a mapped
Network Drive.
Thanks

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RE: how to find out at kernel level if a drive Letter is map network d by pavel_a

pavel_a
Thu Mar 17 07:23:06 CST 2005

"needhelp" wrote:
> Hi All,
> on Windows 2k/XP/2k3
> Is there a way to find out at kernel level if a drive Letter is a mapped
> Network Drive.

You can look up the kernel object directory for \dosdevice\X:
(where X is the drive letter).

If it points to something like \Device\HardDisk... it is local disk.
If it points to something like \Device\UNC or \Device\WinDFS - it is a
mapped drive.

--PA

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Re: how to find out at kernel level if a drive Letter is map network d by Arkady

Arkady
Thu Mar 17 09:22:43 CST 2005

Native API for that are : Nt(Zw)OpenDirectoryObject() and
Nt(Zw)QueryDirectoryObject
Arkady

"Pavel A." <pavel_a@NOwritemeNO.com> wrote in message
news:1EC1873C-C929-462A-A6BD-8E3031CE27C7@microsoft.com...
> "needhelp" wrote:
>> Hi All,
>> on Windows 2k/XP/2k3
>> Is there a way to find out at kernel level if a drive Letter is a mapped
>> Network Drive.
>
> You can look up the kernel object directory for \dosdevice\X:
> (where X is the drive letter).
>
> If it points to something like \Device\HardDisk... it is local disk.
> If it points to something like \Device\UNC or \Device\WinDFS - it is a
> mapped drive.
>
> --PA
>

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