IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE

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  - 1
    - sdram configuration,pls help dear all, I know this might be an old question for u guys, but I really met some troubles within it. My platform is: CPU : Xscale pxa255 OS : Windows CE .Net 4.2 Flash : 32MB SDRAM : 128MB (32MBX4) Now I want to set the configuration of 128M SDRAM. following some suggestions,I modified the some files below, but it does not work.. now,I list my main modification: ////////////////////////////////////// config.bib ////////////////////////////////////// MEMORY IF IMGFLASH ! NK 800B8000 02000000 RAMIMAGE RAM 820B8000 05C00000 RAM EDBG 87F8D000 00020000 RESERVED ENDIF AUD_DMA 87CB8000 0000A000 RESERVED SLEEP_SAV 87CC2000 00001000 RESERVED DRV_GLB 87CC3000 00001000 RESERVED CACHE_FLG 87CC4000 0003C000 RESERVED DISPLAY 87D00000 00130000 RESERVED BLOCK_BUF 87E30000 00080000 RESERVED UNUSED_BUF 87EB0000 000DD000 RESERVED whql_sig 00000001 00002000 EXTENSION ZBANK 88000000 00100000 RESERVED CONFIG IF IMGFLASH ! AUTOSIZE=ON ENDIF IF IMGFLASH ! ROMSTART=800B8000 ROMWIDTH=32 ENDIF ROMSIZE=01D00000 ///////////////////////////////// memmap.inc //////////////////////////////// DCD SDRAM_BASE_C_VIRTUAL,SDRAM_BASE_PHYSICAL,128 DCD ZBANK_BASE_C_VIRTUAL, ZBANK_BASE_PHYSICAL, 1 DCD MEMC_BASE_C_VIRTUAL, MEMC_BASE_PHYSICAL, 1 DCD PERIF_BASE_C_VIRTUAL, PERIF_BASE_PHYSICAL,32 DCD PCMCIA_S0_IO_C_VIRTUAL, PCMCIA_S0_IO_PHYSICAL, 32 DCD PCMCIA_S0_ATTR_C_VIRTUAL, PCMCIA_S0_ATTR_PHYSICAL, 32 DCD PCMCIA_S0_CMN_C_VIRTUAL, PCMCIA_S0_CMN_PHYSICAL, 64 DCD PCMCIA_S1_IO_C_VIRTUAL, PCMCIA_S1_IO_PHYSICAL,32 DCD PCMCIA_S1_ATTR_C_VIRTUAL, PCMCIA_S1_ATTR_PHYSICAL, 32 DCD PCMCIA_S1_CMN_C_VIRTUAL, PCMCIA_S1_CMN_PHYSICAL, 64 DCD LCD_BASE_C_VIRTUAL, LCD_BASE_PHYSICAL, 1 DCD BOOT_FLASH_BASE_C_VIRTUAL, BOOT_FLASH_BASE_PHYSICAL, 32 DCD CS8900A_BASE_C_VIRTUAL, CS8900A_BASE_PHYSICAL, 1 DCD XHYPER255B_PERI_C_VIRTUAL, XHYPER255B_PERI_PHYSICAL, 5 DCD CY7C67300_BASE_C_VIRTUAL, CY7C67300_BASE_PHYSICAL, 1 DCD nCS4_BASE_C_VIRTUAL, nCS4_BASE_PHYSICAL, 8 DCD nCS5_BASE_C_VIRTUAL, nCS5_BASE_PHYSICAL, 8 DCD 0x00000000, 0x00000000, 0 then,I changed xsc1.h,xsc1.inc,xsc1bd.h,xsc1bd.inc to be in sync with config.bib and OEMAddressTable, and I checked a lot ,there's no problem with them. /////////////////////////////////////////////////////////////////////// and in memdefs.h, I was a little confused about the codes below: and I modified the two values which I marked to sync. /////////////////////////////////////////////// #ifndef SABINAL // // Cotulla-32 Defs // #define MEM_BASE_PHYSICAL 0xA3CB8000 #define MEM_BASE_C_VIRTUAL 0x87CB8000 //modifed #define EDBG_PHYSICAL_MEMORY_START 0x87F8D000 //modifed #else // // Sabinal Defs //this seems not used,so I do not modify the value #define MEM_BASE_PHYSICAL 0xA1CB8000 #define MEM_BASE_C_VIRTUAL 0x81CB8000 #define EDBG_PHYSICAL_MEMORY_START 0x81F8D000 #endif /////////////////////////////////////////// I also changed the value in xsc1bd.inc MDCNFG_VAL EQU 0x19C319C3 ; Setup default MDCNFG value for 128MB SDRAM /////////////////////////////////////////// in the end,according to K.S.huang's advice,i modified file fwxsc1.s ; enable sdram bank 0 if installed (must do for any populated bank) orr r3, r3, #MDCNFG_DE0 ;4.28 add orr r3, r3, #MDCNFG_DE1 ;add above and also changed some uart address in platform.reg such as: ;------------------------------------------------------------- ; Serial1 : FFUART ;------------------------------------------------------------- ; @CESYSGEN IF CE_MODULES_SERIAL IF BSP_NOSERIAL ! [HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial] "Dll"="xsc1bd_serial.Dll" ; "IoBase"=dword:a6300000 ;FFUART_BASE_U_VIRTUAL "IoBase"=dword:a8300000 ;FFUART_BASE_U_VIRTUAL ................ /////////////////////////////////////////////// when all of them had done,I download the NK.bin, and the debug information shows: rom_offset=0x0. Found pTOC signature. ROMHDR at Address 800B8044h RomHdr.ulRAMStart=81C50000h RomHdr.physfirst=800B8000h. Done. Writing 0x80076BD8 to flash address 0xB8340000 (length=0xA40). Sector=0x200 (Length=0x6) Block=0x1 (Length=0x1). Handling non-block aligned data... FlashErase: Unlocking flash block(s) [0x1, 0x1] (please wait): Done. Erasing flash block(s) [0x1, 0x1] (please wait): .Done. Writing to flash (please wait): Done. Got EDBG_CMD_JUMPIMG Got EDBG_CMD_CONFIG, flags:0x00000000 Download successful! Jumping to image at physical 0xA00B9000... Begin ****************************************************** ****************************************************** ****************************************************** ****************************************************** ****************************************************** OEMInitDebugSerial using UART2 Windows CE Kernel for ARM Built on Mar 13 2003 at 22:54:19 ProcessorType=02d0 Revision=6 sp_abt=ffff5000 sp_irq=ffff2800 sp_undef=ffffc800 OEMAddressTable = 800b9ef4 as u see,my system hung at last, if normal,sp=ffffc7cc should be printed behind OEMAddressTable = 800b9ef4 but now,system hung there.... and Platform builder printed the word"Kernel debugger is waiting to connect with target." Anybody has experience ? could u give me some advice? I so appreciate it, thank u a lot. Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105519
  - 2
    - Generating a driver without DDK,... Hi, i have a situation here which is really true. I have a old laptop, running windows 2000 professional and there is no space left for the DDK from Microsoft. I want to write and test some (simple, monolithic) drivers, targeting 2000/XP/Vista which handle a special device over USB. So the situation is that i dont have a lot of space for ddk on my machine and i am looking for a way to write a driver, compile it into a native image and all this WITHOUT the MS DDK. Is there such a way, a minimal package of compilers, headers, not bigger than 200 MB? I already have livekd and WinDbg here, but no compiler so far and no environment. The environment should be as small as possible and the compiler should be capable of inline assembly. Is something like this available somewhere? I am not kidding, i really have no space left here on the machine. This may sound funny but this is really the situation. Regards Kerem -- ----------------------- Beste Grüsse / Best regards / Votre bien devoue Kerem Gümrükcü Microsoft Live Space: http://kerem-g.spaces.live.com/ Latest Open-Source Projects: http://entwicklung.junetz.de ----------------------- "This reply is provided as is, without warranty express or implied." Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105515
  - 3
    - Can one force a USB disconnect then reconnect? Is there a way to have Windows pretend a USB device has been unplugged, then plugged back in? -- #include <standard.disclaimer> _ Kevin D Quitt USA 91387-4454 96.37% of all statistics are made up Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105513
  - 4
    - extra WHQL warnings My app calls UpdateDriverForPlugAndPlayDevices and it works. The driver is installed, the device works, everybody is happy. Except... If more than one instance of the model in question is on the bus (it's a USB device), then I get not just one WHQL warning but at least one more. And the pattern is very weird. Let's say the user plugs in one of my devices, and my app calls UpdateDriverForPlugAndPlayDevices, and the user gets a WHQL warning, and she says continue, and everything works. Peachy, right? Now she plugs in a second device and she gets two warnings. Weird! Let's say she says continue two more times and then plugs in a third device. Now she gets three warnings, but the weirdness is just getting started. She plugs in a fourth instance of the device and she gets one warning (expected) but then she plugs in a fifth instance and gets two warnings. Remember, I get the extra warnings even if all but one instance of the device in question already has the driver. But, just to be paranoid, I made sure I was not calling UpdateDriverForPlugAndPlayDevices again due to re-entrant delivery of messages to my window. Of course, I am looking to inhibit the extra WHQL warnings. Any ideas? Pete Gontier http://www.m-audio.com/ pete (at) m-audio (dot) com Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105510
  - 5
    - Mount and dismount physicaldriver Hello: I donâ??t know if it is the correct forum, sorry if Iâ??m wrong. I need to mount and dismount physical drives, like \\.\Physicaldrive0 for example, for a backup software. The idea is to dismount the usb drive after the backup for a safe extraction (this is the less problem), and mount it before start the backup. All of this without human intervention. I develop in c#, but I call Kernel32.dll APIs. Some ideas? Thanks, and sorry for my bad English! -- Juan Segura www.sd-a.com juan@sd-a.com Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105508
  - 6
    - Creating an IP option within a WFP Callout Hello everyone, I am trying to design a driver that will add an IPv4 option to every outbound IPv4 packet. I have developed a WFP callout that allows me to inspect each IP packet as flows through the network layer. At this point I'd like to clone the netbuffer, add the option header and recalculate the appropriate fields. However, I am stuck at one critical area. I need to report to the higher layers that the MTU is reduced by the size of the option header to ensure that the finished packets do not exceed the MTU. Since an outbound network layer callout can not see IP fragments, I am concerned that the packet will then be fragmented, thus invalidating the header that I applied (each option is correlated to the data in the payload). Can any of the forum gurus give me any advice? Thanks! Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105505
  - 7
    - Access violation when device plugged out I have allocated using ExAllocatePoolWithTag to allocate buffer from non paged pool for reading data through the USB AV streaming device. when the driver is streamng the data from the device, and when device is suddenly removed, I check for the URB's status for NO DEVICE after IoCall driver to the next device object. The data recieved is buffered and processed and sent to the other layer. during this time some time when the device is plugged out suddenly, it gives ACCESS VIOLATION BSOD with 0x7E, I am sure the allocated memory is not freed also, the accessed location is not out of bounds of the allocated memory area. The address is not null. Is there any way to check whether the address is valid. This happens only when the device is plugged out. and during normal operation, it works fine. There are 2 possibilities: Device present: during this time bulk transfer is done to read the data from deivce into the buffer and is further sent to processing. Device is removed: when a bulk transfer is attempted, it is programmed to return STATUS_NO_SUCH_DEVICE such that the call is returned and the buffer pointer is not sent for processing. In both the case, how does it give access violation, as the buffer is allocated and is not freed yet. Can somebody let me know if any thing I am missing.. Thanks.. Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105495
  - 8
    - WPP Tracing in miniport Hi, How do I use HwStorInitializeTracing in a miniport driver? Would the following be correct: HwStorInitializeTracing(p1,p2) { WPP_INIT_TRACING(p1,p2) } Thank you, Andrew Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105493
  - 9
    - Windows 95/98 Vxd driver question Hi I might need to study Windows 98 Vxd driver framework , is there any book talk abount it ? Where can I find MSDN online document about Vxd driver ? Thank you . Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105486
  - 10
    - Bug in usbser.sys when using a high speed hub I have a full speed USB device that I'm developing that uses usbser.sys. I found that if I connect the device directly to my Dell laptop everything works find. If I connect the device through a high speed USB 2.0 hub everything is very flaky. I see hangs when opening the com port, Windows lockups, and other wierd falures. I found a workaround. If I disabled the enhanced USB controller in device manager to force the hub to use full speed everything is rock solid. So this makes me think the problem is either a bug in Windows or a bug with the Intel chipset in my Dell Inspiron laptop. 1. Is this a known bug in usbser.sys or Windows? 2. What do I need to do to report the problem? My operating system is Vista SP1. Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105484
  - 11
    - Asyc Call Of MiniportProcessSGList If HAL asynchronously completes the request to to create a scatter/gather list through calls to NdisMAllocateNetBufferSGList (i.e., completes the request outside of the context of the NDIS call), can I assume that it serialize the completion of pending requests? For example, if I have two requests, can I assume that request #1 will always be completed before request #2? Thanks! Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105483
  - 12
    - Deserialized miniport question Hi, I am leveraging a deserialized miniport driver that hooks into the NDIS library. The driver is written in WDM format, not in WDF, and the OS is Windows XP The miniport driver hooks into the Windows TCP/IP stack and uses my hardware driver to send and receive data across the physical medium. The hardware is a PCIe Non-transparent bridge. I have successfully connected on a HARDWARE level, and am able to transfer data back and forth between the processors' exposed memory. Consider: Processor A = Windows XP = miniport Driver. Processor B = other side of the NTB PCIe chip. Processor A boots first, and establishes the connections as far as it can. When Processor B boots, it sends a GRATUITOUS ARP to Processor A through my hardware and miniport driver. 1) From what I can tell, the ARP comes across from B to A, and I can see it in Wireshark when I monitor my adapter. HOWEVER, the ARP information does not get logged into the ARP table, even when I â??preloadâ?? the table with the IP and a bogus Physical Address. I was expecting the Physical Address to get updated with the GRATUITOUS ARP, but it doesnâ??t. 2) Data from the GRATUITOUS ARP is passed up to the Windows stack via a call to NDISMIndicateReceivePacket() in my minport driver, and I can see my MiniportReturnPacket() function get called to release the packet. 3) Next, when I try to â??pingâ?? Processor B from Processor A, I can see the ping request come across into Processor B, and then see B respond back to A. I see the data come through into the miniport driver, but it all hangs when NdisMIndicateReceivePacket() is called. There is no Blue screen of Death, but it might as well, because it all hangs. It BEHAVES as if the system is locked on a spin lock, but I donâ??t think that is it. I can comment in and out the NdisMIndicateReceivePacket( ) to change behavior. The OOB data packet status is set to: NDIS_SET_PACKET_STATUS(RecvPacket, NDIS_STATUS_SUCCESS); Prior to calling NdisMIndicateReceivePacket(). I am looking for ideas on what to look into as possible suspects. Does anyone have any thoughts? Thanks, Jan Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105480
  - 13
    - Ramdisk with Vista SP1 Hi, I installed the wdk 6.0 6001.18001 on Windows Vista SP1, then I compiled the exmaple of the ramdisk. After I installed the driver, i noticed that the disk are not accessible via the explorer nor the cmd. But if I launch the cmd via the administrator rights, i can access the ramdisk drive. How I can do to get it worked around normal user? Thanx, Pierluigi Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105479
  - 14
    - Ramdisk example and Vista Hi, I installed the wdk 6.0 6001.18001 on Windows Vista SP1, then I compiled the exmaple of the ramdisk. After I installed the driver, i noticed that the disk are not accessible via the explorer nor the cmd. But if I launch the cmd via the administrator rights, i can access the ramdisk drive. How I can do to get it worked around normal user? Thanx, Pierluigi Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105478
  - 15
    - USB 2.0 Streaming MPEG - Best way to queue request? We have a USB 2.0 device that outputs small multiples of MPEG2 TS packets(188 bytes), and therefore need to queue up multiple BULK requests to the USB bus driver(USBD) in order to keep the MPEG2 video flowing without dropping packets. Since in BULK mode our requests are not aligned on 512 byte boundaries, submitting a large buffer to the USBD does not help, since in BULK mode a transaction of less than 512 bytes ends the session. So the question is: What is the best way to queue up multiple BULK requests with small buffers in the driver? Are System Work Items a way to go, queue up multiple initially, then requeue in the callback? The DDK docs indicate that the System thread pool is a shared resource and should be used sparingly... Any suggestions would be appreciated. Thanks -decoder Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105477
  - 16
    - DIFxApp download help I am trying to download DIFxAPP so that I can integrate a driver installation with my application installer. I keep finding myself going in circles trying to find it and would appreciate a URL. I went to the Installer home page and still was able to find the latest version. Thanks, Sid. Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105471
  - 17
    - DPInst.exe encounters PnP Manager busy With Windows XP SP2, following is my installation experience using DPInsta.exe v2.1.0.0: 1. With deceive attached during installation, the DPInst.log reports, "PnP Manager busy, waiting until it processed the pending install events". And the driver won't be installed if the 'Found New Hardware Wizard' is not dismissed manually. How to fix the issue to allow auto installation without user intervention? 2. After preinstall the device driver, the XP machine still pops up the 'Found New hardware Wizard' for the device which requires user to search for the driver that has been pre-installed in the system. How to avoid the pops up after preinstall? Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105470
  - 18
    - How to call the kernel API which is not in the DDK document! I can't find that kernel API in the DDK document. But it is exposed by ntoskrnl.exe. What should I do to call it ! Thank you very much! -- å¤©è?¥æ??æ??å¤©äº¦è??ï¼?äººé?´æ£é??æ?¯æ²§æ¡?ã?? Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105459
  - 19
    - custom page size and dmPaperLength/dmPaperWidth If in Microsoft Word's "Page Setup" dialog I select custom page size and enter 1.5 inch width by 1 inch high, how does this information get passed to the printer driver? I expected that the DEVMODE passed to DrvEnablePDEV would contain the correct dmPaperLength and dmPaperWidth, but these values seem to be the default form size for the printer. I set a breakpoint at DrvEnablePDEV and inspected every DEVMODE passed to the driver. All of them contained the default page size as set in the "Printing Preferences" property pages. Several of the calls showed the DEVMODE dmFields did have DM_PAPERLENGTH and DM_PAPERWIDTH set, but the values for those fields were still the default for the printer. I know these values are available because another vendor's printer driver works correctly in this case. What am I missing? Neal Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105452
  - 20
    - WPP & KMDF Crash I have been attempting to use WPP tracing in my Bus Driver and when I create a session in TraceView with either the symbols or CTL file I will get a bug check on occasion. I have several function driver which use WPP just fine. Any pointers on where to start looking? PAGE_FAULT_IN_NONPAGED_AREA (50) Invalid system memory was referenced. This cannot be protected by try-except, it must be protected by a Probe. Typically the address is just plain bad or it is pointing at freed memory. Arguments: Arg1: 86193940, memory referenced. Arg2: 00000000, value 0 = read operation, 1 = write operation. Arg3: 819da52f, If non-zero, the instruction address which referenced the bad memory address. Arg4: 00000000, (reserved) Debugging Details: ------------------ READ_ADDRESS: GetPointerFromAddress: unable to read from 819726d8 Unable to read MiSystemVaType memory at 819532e0 86193940 FAULTING_IP: nt!WmipForwardWmiIrp+75 819da52f ff10 call dword ptr [eax] MM_INTERNAL_CODE: 0 CUSTOMER_CRASH_COUNT: 2 DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT BUGCHECK_STR: 0x50 PROCESS_NAME: System CURRENT_IRQL: 0 TRAP_FRAME: 85728b94 -- (.trap 0xffffffff85728b94) ErrCode = 00000000 eax=86193940 ebx=84c6b008 ecx=00000004 edx=00000000 esi=84371178 edi=85728c90 eip=819da52f esp=85728c08 ebp=85728c40 iopl=0 nv up ei pl zr na pe nc cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00010246 nt!WmipForwardWmiIrp+0x75: 819da52f ff10 call dword ptr [eax] ds:0023:86193940=???????? Resetting default scope LAST_CONTROL_TRANSFER: from 818a0ae4 to 818b6b4e STACK_TEXT: 85728b7c 818a0ae4 00000000 86193940 00000000 nt!MmAccessFault+0x158 85728b7c 819da52f 00000000 86193940 00000000 nt!KiTrap0E+0xdc 85728c40 819da169 00000000 00000004 86193940 nt!WmipForwardWmiIrp+0x75 85728c6c 819da1be 00000004 86193940 85728ce8 nt!WmipSendWmiIrp+0x56 85728c9c 819ad46a 00000004 86f56c74 00000040 nt!WmipDeliverWnodeToDS+0x22 85728d18 819ad24b 99abf480 86f82754 8193e8fc nt!WmipProcessLegacyEtwCallback+0x89 85728d44 818a16be 86f82754 00000000 82a8e828 nt!WmipLegacyEtwWorker+0x5e 85728d7c 819ee6ad 86f82754 5ac88d9a 00000000 nt!ExpWorkerThread+0xfd 85728dc0 818d5686 818a15c1 00000001 00000000 nt!PspSystemThreadStartup+0x9d 00000000 00000000 00000000 00000000 00000000 nt!KiThreadStartup+0x16 STACK_COMMAND: kb FOLLOWUP_IP: nt!WmipForwardWmiIrp+75 819da52f ff10 call dword ptr [eax] SYMBOL_STACK_INDEX: 2 SYMBOL_NAME: nt!WmipForwardWmiIrp+75 FOLLOWUP_NAME: MachineOwner MODULE_NAME: nt IMAGE_NAME: ntkrnlmp.exe DEBUG_FLR_IMAGE_TIMESTAMP: 47918b0a FAILURE_BUCKET_ID: 0x50_nt!WmipForwardWmiIrp+75 BUCKET_ID: 0x50_nt!WmipForwardWmiIrp+75 Followup: MachineOwner Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105444
  - 21
    - BthPort - How do I get the connection? I notice that there are a series of Bluetooth functions that talk to and return a handle to BthPort. I need something like "\\?\BthPort" that I can call from another driver. Unfortunately MS made all the control calls only callable from another device driver (IRP_MJ_INTERNAL_DEVICE_CONTROL) and not from the App layer so I need to write a relay driver to call SCO. I see that BthPen, BthModem, BthEnum, and BthUSB have calls. What is the exported device name for BthPort? Thanks, -Erik Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105442
  - 22
    - malloc,free,mbtow problem hi i m working on file hooking i had applied two basic hooks i.e NTCreateFile and NtOpenFile i am almost finish but with very simple error and i am unable to resolve: i am allocating dynamic memory to char pointer i.e. char *cPtrDst ; cPtrDst = (char*)malloc(size); and deallocating it by free: free(cPtrDst); and i am converting this array into wchar_t variable using : wchar_t dir[10];//suppose its an array result = mbtowc(dir,cPtrDst,size); when i compile the driver it gives error: error LNK2019: unresolved external symbol __imp__free referenced in function _freePolicyData@0 unresolved external symbol __imp__malloc referenced in function _policyWriteNeither@8 i had included stdlib.h but in vain......... any idea about error? Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105435
  - 23
    - Filtering the I/O requests sent by non-system applications in a file HI, I'm a newbie in the world of drivers. I'm developing a file system filter driver that needs to process all I/O requests sent in by user mode applications eg; MS Word, Excel etc; I don't want to do any sort of processing on IRPs generated on behalf of the Windows OS itself ( I'm not sure I'm using the correct words here :) ). To put it simple, I want to distinguish between IRPs generated on behalf of the OS processes and those generated on behalf of user mode applications. Could anybode tell me the easiest mechanism to achieve this? Thanks in advance, Shaji. Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105429
  - 24
    - windows file system internals -o reilly ebook??????? I need to know whether any link is there to download windows NT file system internals book.osr publications.Is there any e book for this is available??? If so can anybody send a link to it. Thanks in advance Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105424
  - 25
    - STORAGE-0012: Separated Cache Solution WHQL test I have a question about the Separated Cache Solution WHQL test. =46rom the language contained within, it seems the STORAGE-0012 test suite is defined to be more or less a stand-alone set of requirements that is self-contained from the perspective of not having a dependency on any other STORAGE-XXXX tests except STORAGE-0005 (except if a separate flash disk device is exposed in which case the device must be logo=92d separately as well). Barring the separately-exposed device case mentioned immediately above, it appears in particular that a STORAGE-0012 =93storage adapter=94 does not imply/include a requirement to meet all STORAGE-002 (Storage host controllers and adapters) requirements For one thing, it seems that if that was the intention, it would have been explicitly mentioned as that is the convention throughout the Windows Hardware Logo Program Requirements document. if anybody could give us an opinion on the relationship or non- relationship of STORAGE-0002 to STORAGE-0012, it would be most greatly appreciated. Thanks. Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105420
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  - 1
    - returning DCR_HALFTONE from DrvDitherColor What does it mean to return DCR_HALFTONE from my printer drivers DrvDitherColor function? The DDK states that the return value should be "DCR_HALFTONE if the engine should create a halftone approximation for the driver." I return DCR_HALFTONE but this seems to have zero effect on the use of gray or colored brushes used by applications when drawing into my printer DC. In most cases, anything that is not white is printed as black. For example, black text on a gray background prints as a black block. Also, the following is from the comments section of the DDK documentation for DrvDither Color. What the heck does this mean? "Monochrome device drivers, including most raster printers, should use the iMode parameter to tell GDI how to get good gray-scale patterns." I don't understand. The "iMode" parameter is passed to my driver. What does that statement mean "to tell the GDI" ??? Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105415
  - 2
    - FileSystem: Non cached read. Hi all, i am writing the file system driver. There is a problem with non-cached read. here is the sample code, whenever the call reaches to keWaitForSingleObject() it hangs (waits) there infinitely? can anyone please tell me what could be the problem? i am using my own buffer ( allocated paged memory ). is it the case that i have to lock the buffer? i have tried with locking the buffer also. this problem occurs only in Windows XP not in Vista. is there any specific thing we need to take care? please help me, thanks hitesh ughreja here is the sample code. KEVENT Event; PIRP Irp; IO_STATUS_BLOCK IoStatus; NTSTATUS Status; KeInitializeEvent(&Event, SynchronizationEvent, FALSE); Irp = IoBuildSynchronousFsdRequest( IRP_MJ_READ, TargetDeviceObject, Buffer, Length, (PLARGE_INTEGER)(&Offset), &Event, &IoStatus ); if (!Irp) { Status = STATUS_INSUFFICIENT_RESOURCES; } Status = IoCallDriver(TargetDeviceObject, Irp); if (Status == STATUS_PENDING) { KeWaitForSingleObject( &Event, Executive, KernelMode, FALSE, NULL ); Status = IoStatus.Status; } if(!NT_SUCCESS(Status)) { DbgPrint("Read disk failure\n"); return Status; } Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105413
  - 3
    - PnP device recognition Hi. i have a question regarding the PnP mechanism. my driver (WDF based) controls a pci board. my system can have between one to ten boards on its backplane. my question is - is there a way for me to know (to be sure) that PnP have finished dealing with all of my boards (that are related to my driver) in a given moment. my user mode side of the system needs to know weather there are still boards that were not handled by the PnP. a possible soulution might be using some kind of configuration, meaning that the user mode will have to know how many boards exist on a given system and will be able to query the driver of how many boards were found in a given moment. but since i try to avoid this kind of solution i would to know if the OS/pnp mechanism can help me with that. thanks a ot, kobi. Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105409
  - 4
    - USB Composite Device and Selective Suspend on Windows XP Hi, Does anyone know if the Common Class Generic Parent driver (usbccgp.sys) supports USB Selective Suspend on Windows XP? Is there a minimum SP (i.e. SP3) needed to support this? TIA Pete Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105408
  - 5
    - Margin for PCL5e and PCLXL drivers is not the same for Windows Hi, We are developing Windows Monolithic Printer Driver for PCL5e and PCLXL languages. The printable area for both the drivers for all paper types is the same. The PCL5e driver uses GDI scaling and in PCLXL scaling is done by the driver using commands. The problem is that the borders are not printed at the same location for both the drivers when a normal Word document with page borders is printed. It would be helpful if anyone can give some inputs on this, regarding its possible cause and solution. Thanks in advance. Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105407
  - 6
    - Margin for PCL5e and PCLXL drivers is not matching in Monolithic Hi, We are developing Monolithic Windows Printer Driver for PCL5e and PCLXL languages. The printable area for both PCL5e and PCLXL drivers is same. The PCL5e driver uses GDI scaling and in PCLXL, scaling is done by the driver using commands. The problem is that the border is not printed at the same location for the two drivers when a normal Word document with borders is printed with the two drivers. It would be helpful if anyone can give some inputs on this, regarding its possible cause and solution. Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105406
  - 7
    - Can not use ShellExecute or ShellExecuteEx in Co-installer Entry I'm writing a co-installer for my driver and I need launch other applications in co-installer entry point, in response to DIF_INSTALLINTERFACES request. But I found it works in XP, but not in Vista. How should I do? Any help will be appreciated. Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105402
  - 8
    - How to send data from WinCE to Windows XP ? Hi How to send data between Windows and WinCE , is Activesync protocol best way, where can I find the documents ? Do you know Windows CE USB Serial Host wceusbsh.sys driver ? Where can I get its WDM source , can I use it to recieve WinCE device data ? Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105401
  - 9
    - How to send data from Windows CE to Windows XP ? Hi How to send data between Windows and WinCE , is Activesync protocol best way, where can I find the documents ? Do you know Windows CE USB Serial Host wceusbsh.sys driver ? Where can I get its WDM source , can I use it to recieve WinCE device data ? Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105400
  - 10
    - How to find Invalid Nonpaged memory address? Hi.. I have allocated memory from Nonpaged pool using ExAllocatePoolWithTag. I am passing the pointer to the allocated memory location into a function call, and sometime when tried to access the same, gives a SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (7e) The allocated memory is not freed. The access violation happends randomly.. EXCEPTION_RECORD: badd0b3c -- (.exr ffffffffbadd0b3c) ExceptionAddress: b9ceb90c (mydriver!MyBox::MyBoxType+0x0000000c) ExceptionCode: c0000005 (Access violation) ExceptionFlags: 00000000 NumberParameters: 2 Parameter[0]: 00000000 Parameter[1]: 004d98a4 Attempt to read from address 004d98a4 Is there any way find out whether the address in the Nonpaged is valid or not.. I tried using MmIsAddressValid, it's mentioned in documentation that it's not recommended to use it.. also I am not able to compile with WDK 6000 build. Thanks.. Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105398
  - 11
    - DTM:Error occurs during receiving the list of machines in Default Hi, I have installed Windows DTM Studio. After trying to receive the list of machines in Default Pool I have received an error. Root Cause: INFORMATION : Marking RunJob Task "Create Dimension Display_DriverModel - Task - Create Dimension Xslt" As Failed as the LibraryJob "Create Dimension Xslt" has Failed Resolution: The Library job that was called by this RunJob task has failed. Hence this RunJob task will also be marked failed. How can I resolve this issue? Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105397
  - 12
    - How to monitor IRP Hi Is there any magic tool that we can monitor all or some Windows drivers IRP, IO control code and data if they do not dump message , can WinDbg do this ? Thank you . Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105395
  - 13
    - Problem with mapping more than one page using ZwMapViewOfSection u Hello, I have a problem with sharing memory, which is bigger than one page (4 kBytes), between driver and user space application. In a driver I have allocated static global variable char myTable[sizeof(__int64)*2044]; //size of it is 16352 bytes and initialized it with simple loop: __int64* initPtr = (__int64*)myTable; for (__int64 i=0; i<size/sizeof(__int64); i++ ) intPtr[i]=i; Next Iâ??ve tried to share this table with user mode application. Iâ??ve achieved this by execution of the following code: void getSharedMemory(void* pVA) { HANDLE physicalMemorySectionHandle; UNICODE_STRING physicalMemorySectionUnicodeString; OBJECT_ATTRIBUTES physicalMemoryObjectAttributes; PVOID physicalMemorySection = NULL; PHYSICAL_ADDRESS physicalAddressBase; PHYSICAL_ADDRESS viewBase; NTSTATUS status; PVOID mappedVirtualAddress; HANDLE processHandle = ZwCurrentProcess(); if (NULL == pVA) return; /* Mapping memmory to user space */ RtlInitUnicodeString (&physicalMemorySectionUnicodeString, L"\\Device\\PhysicalMemory"); InitializeObjectAttributes (&physicalMemoryObjectAttributes, &physicalMemorySectionUnicodeString, OBJ_CASE_INSENSITIVE, (HANDLE) NULL, (PSECURITY_DESCRIPTOR) NULL); status = ZwOpenSection (&physicalMemorySectionHandle, SECTION_ALL_ACCESS, &physicalMemoryObjectAttributes); if (!NT_SUCCESS(status)) { *((PVOID*)pVA) = NULL; return; } status = ObReferenceObjectByHandle (physicalMemorySectionHandle, SECTION_MAP_READ, (POBJECT_TYPE) NULL, KernelMode, &physicalMemorySection, (POBJECT_HANDLE_INFORMATION) NULL); if (!NT_SUCCESS(status)) { *((PVOID*)pVA) = NULL; ZwClose(physicalMemorySectionHandle); return; } /* convert kernel va to real phisical address */ physicalAddressBase = MmGetPhysicalAddress(myTable); viewBase = physicalAddressBase; mappedVirtualAddress = NULL; ULONG size = sizeof(__int64)*2044; //size of global static table status = ZwMapViewOfSection (physicalMemorySectionHandle, processHandle, &mappedVirtualAddress, 0L, size, &viewBase, &size, ViewShare, 0, PAGE_READWRITE | PAGE_NOCACHE); if (!NT_SUCCESS(status)) { status = ZwMapViewOfSection (physicalMemorySectionHandle, processHandle, &mappedVirtualAddress, 0L, size, &viewBase, &size, ViewShare, 0, PAGE_READWRITE |PAGE_WRITECOMBINE); } if (!NT_SUCCESS(status)) { status = ZwMapViewOfSection (physicalMemorySectionHandle, processHandle, &mappedVirtualAddress, 0L, size, &viewBase, &size, ViewShare, 0, PAGE_READWRITE); } if (!NT_SUCCESS(status)) { *((PVOID*)pVA) = NULL; ZwClose(physicalMemorySectionHandle); return; } //now size is 20480 â?? rounded up to 4kB boundary mappedVirtualAddress = (PVOID)((ULONG)mappedVirtualAddress + (ULONG)physicalAddressBase.LowPart - (ULONG)viewBase.LowPart); *((PVOID*)pVA) = mappedVirtualAddress; ZwClose(physicalMemorySectionHandle); return; }; It looks everything works OK, but when Iâ??m trying to read whole the table from user space application the result is as follow: [Value] [Mapped Virtual Address (hex)] 0 348b58 1 348b60 2 348b68 3 348b70 4 348b78 5 348b80 6 348b88 7 348b90 8 348b98 9 348ba0 10 348ba8 11 348bb0 â?¦â?¦â?¦. 652 349fb8 653 349fc0 654 349fc8 655 349fd0 656 349fd8 657 349fe0 658 349fe8 659 349ff0 660 349ff8 14757395258967641088 34a000 <- here is next page and problems begins 14757395258967641292 34a008 1507725027235463051 34a010 5028082440786512726 34a018 17889923897613475068 34a020 23678979336568832 34a028 3640333463937649408 34a030 277895171801089 34a038 â?¦.. The problem appears not always but very often. It always lies on the boundary of two pages. Usually first or first two pages are visible properly but third, fourth and next pages are totally wrong. The table is static and allocated in driver so it is for sure NONPAGED memory. Is it a problem with Virtual Translation Table at user space side? Why, in spite of usage ZwMapViewOfSection which maps 20480, third, fourth and following pages are not visible form user application? Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105392
  - 14
    - Removing Hardware from System by UserMode Code and Reinstalling it... Hi, i have a PCMCIA WLan Adapter plugged into my Laptop. I would like to remove it from my system by code and reinsert it into system, also done by code. The Hardware Device will still be plugged into the systems pcmcia slot after "software" removal. How can i do this by user mode code? I want to remove the device as it would be done by the tray icon for the devices and i want to reinsert it into the system. The Hardware will be always in the pcmcia slot,... TIA Regards Kerem -- ----------------------- Beste Grüsse / Best regards / Votre bien devoue Kerem Gümrükcü Microsoft Live Space: http://kerem-g.spaces.live.com/ Latest Open-Source Projects: http://entwicklung.junetz.de ----------------------- "This reply is provided as is, without warranty express or implied." Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105388
  - 15
    - Microsoft Loopback Adapter Hello, I have some questions about the Microsoft Loopback Network Adapter. I hope someone can help answer these. - How different is it from NTKernel.com's Virtual Network Adapter VirtNet ? - Are there any sample code or sources I can build/download for Microsoft Loopback Network Adapter? - If not, is it the same as netvmini is WinDDK? The netvmini as if needs two instances of it to loopback...Are there major changes that need to be done to get netvmini to loopback with 1 instance - that's if Microsoft Loopback Network Adapter source are not available? Thanks Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105383
  - 16
    - Getting a reference to an Unnamed Device Is there a way to get a reference to an unnamed device? How can you get a pointer / call CreateFile() from user mode on such a device? Thanks. Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105378
  - 17
    - New release of undocumented.ntinternals.net Pleased to announce there's a new release of http://undocumented.ntinternals.net/ documenting most NTAPI "undocumented" functions and structures. Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105377
  - 18
    - read from virtual comport Hi, I have a program that writes/reads a virtual comport. Writing is ok. Reading always returns 0 bytes. (the connected device is sending stuff continuously) The read uses standard windows API, CreateFile / ReadFile. Commtimeouts are set. I tried every combination of options for the above mentioned functions. Hyperterminal & teraterm DO receive data from this port. A Hid-code-sample I have opens the port in the same way I do. Any idea's ? Greetings, Rob. Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105376
  - 19
    - Unable to Pend IRP on ISO Read (IN) pipe I need to pend an IRP on the ISO IN pipe with a completion routine, which will get invoked when the driver below (USB) has some data on the pipe. My problem is that i have been unable to pend an IRP (Created using IoAllocateIrp) on the ISO read (IN) pipe. I have tried with the sample provided in DDK (\WinDDK\6000\src\usb\isousb\sys) as well as the sample provided by Walter Oney (\Samples\Chap12\usbiso\sys). I am using the alternate setting number 5 provide by my device on interface 1, wherein the maximum packet size is 0x33 (51) bytes. Whenever i call to IoCallDriver to send the IRP to the next driver below, i get a failure with code 0xC000000D(STATUS_INVALID_PARAMETER). If at all the call returns STATUS_PENDING, the completion routine for the sub IRP's is getting called. Any help in this regard will be great. Thanks in advance. Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105368
  - 20
    - Linking a dll or a lib file developped in C++ using Visual Studio Hello, I'm programming a virtual miniport driver that has to redirect every network packets to a windows service. To use this service, I need to link my driver with a library that was originally developped with Visual Studio 2003 in C++ language. My driver is written in C language. But when I try to use functions from the DLL, even functions that do not include classes, the build command gives me this error : Linking Executable - objchk_wlh_x86\i386\netvmini.sys errors in directory d:\projets\test d:\projets\test\netvmini.obj : error LNK2019: unresolved external symbol _InstallService@0 referenced in function _DriverEntry@8 d:\projets\test\objchk_wlh_x86\i386\netvmini.sys : error LNK1120: 1 unresolved externals Is it possible to link my driver with this library or do I need to redevelop it in C language ? thanks. Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105365
  - 21
    - 32-bit HANDLE in 64-bit driver Hi, I had used following technique in communication user-mode app <--> driver: User app passes event handle to driver and driver retrieves pointer to object body with help of ObReferenceObjectByHandle() . Driver then signals some events to user mode application with KeSetEvent(). Problem is: Currently I have 32-bit user mode app which communicates with 64-bit driver. When 64-bit driver reads 32-bit HANDLE (32-bit number) passes from user-mode, can it simple make conversion like: HANDLE h64Bit = NULL; h64Bit = (HANDLE)h32BitFromUserMode; ? Will be retrieved handle in 64-bit driver valid and can be on such called KeSetEvent() in 64-bit driver ? Peter Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105363
  - 22
    - Need assistance with DPinst Hi, I am working on the automation of the driver install for a USB connected device. I don't have any experience with driver install, and hope that I can get some help from this forum. The device connects with USB and only has a .inf file. The driver itself is usbscan.sys. Currently when the device is connected a 'new hardware device detected' wizards pops up. To install it, we now have to follow a manual process. In the manual process I get a warning that the driver is not signed. I would like to automate this with a installer. I think that DPInst is the tool I could use for this. See below the data of the .inf file. I have tried the DPInst with the legacy mode argument (/lm) and then is says that the driver is installed, but it does not appear in the hardware manager. I am testing the installation on a Windows XP machine. Am I doing the right thing?, any help would be greatly appreciated, Bart [Version] Signature="$CHICAGO$" Class=Image ClassGUID={6bdd1fc6-810f-11d0-bec7-08002be*****} provider=%MfgName% LayoutFile=layout.inf [Manufacturer] %MfgName%=****** [******] %USB\VID_066F&PID_****&Rev_0001&MI_00.DeviceDesc% = BULKUSB.Dev, USB \VID_066F&PID_****&Rev_0001&MI_00 [PreCopySection] HKR,,NoSetupUI,,1 [DestinationDirs] BULKUSB.Files.Inf = 10,INF [BULKUSB.Dev] Include = sti.inf Needs = STI.USBSection CopyFiles = BULKUSB.Files.Inf AddReg = BULKUSB.AddReg [BULKUSB.Dev.NT] Include = sti.inf Needs = STI.USBSection CopyFiles=BULKUSB.Files.Inf AddReg=BULKUSB.AddReg [BULKUSB.Dev.NT.Services] Include=sti.inf Needs=STI.USBSection.Services [BULKUSB.AddReg] HKR,,DevLoader,,*ntkern HKR,,NTMPDriver,,usbscan.sys HKLM,"System\Currentcontrolset\Services\BulkUsb \Parameters","MaximumTransferSize",0x10001,4096 HKLM,"System\Currentcontrolset\Services\BulkUsb \Parameters","DebugLevel",0x10001,2 [BULKUSB.Files.Inf] driver2kXpvista.inf ;---------------------------------------------------------------; [Strings] MSFT="******" MfgName="*****" USB\VID_066F&PID_****&Rev_0001&MI_00.DeviceDesc="******" BULKUSB.SvcDesc="******" Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105362
  - 23
    - Unidrv WHQL Is a unidrv based printer driver subject to the same WLK and driver signing procedures as a straight GDI printer driver? Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105359
  - 24
    - WDF ToolKit ? Hi Is Microsoft WDK the only Kit for WDF , any other third-party Kit pack their wizard over this framework ? Does DDK support WDF , or we should use WDK ? Does WDK build environment support both WDF and WDM , any different usage ? Thank you . Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105357
  - 25
    - which sample code driver should I use ? Dear All, I'm going to develop a driver for notebook using. The driver need to handle a device (capacitive sensor finger touch) and then tuning system audio volume. In such a case, which sample code classified in WDK source catalogue is suitable to refer ? Thanks in Advance. Sincerely, Joy. Tag: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE Tag: 105356

Hello:

Turning around connect and disconnect disk devices I look at
IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE functions.
However I donâ??t find any examples jet.
I test this (in c#):

SafeFileHandle h = CreateFile(â??\\\\.\\Physicaldriver3â??,
GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE,
IntPtr.Zero, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL |
FILE_FLAG_WRITE_THROUGH,
new SafeFileHandle(IntPtr.Zero, true));

if (!h.IsInvalid)
{
long bret = 0;
bool ret=DeviceIoControl(h,
IOCTL_VOLUME_OFFLINE,IntPtr.Zero,0,IntPtr.Zero,0,
out bret, IntPtr.Zero);
â?¦

Where IOCTL_VOLUME_OFFLINE is 3, meanwhile IOCTL_VOLUME_ONLINE is 2.

The GetLastWin32Error returns 50, I thing â??ERROR_NOT_SUPPORTEDâ??.

The Physicaldriver3 is an USB Memory stick dervice.

I know others ways for disconnect USB, but my target is to reconnect the USB
without human intervention.

Thanks for your time!

--
Juan Segura
www.sd-a.com
juan@sd-a.com

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RE: IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE by juansda

juansda
Sun May 04 05:24:01 CDT 2008

I found another way:

instead IOCTL_VOLUME_OFFLINE and IOCTL_VOLUME_ONLINE I can use
IOCTL_STORAGE_EJECT_MEDIA and IOCTL_STORAGE_LOAD_MEDIA.

The Eject function works well, but the LOAD has no efect!!!

Need help, please!

--
Juan Segura
www.sd-a.com
juan@sd-a.com

"Juan Segura" wrote:

> Hello:
>
> Turning around connect and disconnect disk devices I look at
> IOCTL_VOLUME_ONLINE and IOCTL_VOLUME_OFFLINE functions.
> However I donâ??t find any examples jet.
> I test this (in c#):
>
> SafeFileHandle h = CreateFile(â??\\\\.\\Physicaldriver3â??,
> GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE,
> IntPtr.Zero, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL |
> FILE_FLAG_WRITE_THROUGH,
> new SafeFileHandle(IntPtr.Zero, true));
>
> if (!h.IsInvalid)
> {
> long bret = 0;
> bool ret=DeviceIoControl(h,
> IOCTL_VOLUME_OFFLINE,IntPtr.Zero,0,IntPtr.Zero,0,
> out bret, IntPtr.Zero);
> â?¦
>
> Where IOCTL_VOLUME_OFFLINE is 3, meanwhile IOCTL_VOLUME_ONLINE is 2.
>
> The GetLastWin32Error returns 50, I thing â??ERROR_NOT_SUPPORTEDâ??.
>
> The Physicaldriver3 is an USB Memory stick dervice.
>
> I know others ways for disconnect USB, but my target is to reconnect the USB
> without human intervention.
>
> Thanks for your time!
>
> --
> Juan Segura
> www.sd-a.com
> juan@sd-a.com

Top