參考資訊:
https://wasm.in/
http://four-f.narod.ru/
https://github.com/steward-fu/ddk
StartIo提供一個序列化的機制,讓使用者可以依照順序處理IRP,這個機制對於某些只能序列處理資料的硬體相當有幫助,省去用軟體實現序列化的程式碼,StartIo使用步驟如下:
1. IoMarkIrpPending()
2. IoStartNextPacket()
main.asm
.386p .model flat, stdcall option casemap:none include c:\masm32\include\w2k\ntstatus.inc include c:\masm32\include\w2k\ntddk.inc include c:\masm32\include\w2k\ntoskrnl.inc include c:\masm32\include\w2k\ntddkbd.inc include c:\masm32\Macros\Strings.mac includelib c:\masm32\lib\wxp\i386\ntoskrnl.lib public DriverEntry MyDeviceExtension struct pNextDev PDEVICE_OBJECT ? szBuffer byte 255 dup(?) MyDeviceExtension ends .code StartIo proc pMyDevice : PDEVICE_OBJECT, pIrp : PIRP local pBuf : DWORD local dwLen : DWORD local pDevExt : ptr mov eax, pMyDevice push (DEVICE_OBJECT ptr [eax]).DeviceExtension pop pDevExt mov eax, pIrp push (_IRP ptr [eax]).AssociatedIrp.SystemBuffer pop pBuf IoGetCurrentIrpStackLocation pIrp movzx eax, (IO_STACK_LOCATION ptr [eax]).MajorFunction .if eax == IRP_MJ_WRITE invoke DbgPrint, $CTA0("StartIo, IRP_MJ_WRITE") IoGetCurrentIrpStackLocation pIrp Push (IO_STACK_LOCATION ptr [eax]).Parameters.Write._Length pop dwLen mov eax, pDevExt invoke memcpy, addr (MyDeviceExtension ptr [eax]).szBuffer, pBuf, dwLen invoke DbgPrint, $CTA0("Buffer: %s, Length: %d"), pBuf, dwLen .elseif eax == IRP_MJ_READ invoke DbgPrint, $CTA0("StartIo, IRP_MJ_READ") mov eax, pDevExt invoke strlen, addr (MyDeviceExtension ptr [eax]).szBuffer mov dwLen, eax mov eax, pDevExt invoke memcpy, pBuf, addr (MyDeviceExtension ptr [eax]).szBuffer, dwLen .endif mov eax, pIrp mov (_IRP ptr [eax]).IoStatus.Status, STATUS_SUCCESS push dwLen pop (_IRP ptr [eax]).IoStatus.Information fastcall IofCompleteRequest, pIrp, IO_NO_INCREMENT invoke IoStartNextPacket, pMyDevice, FALSE mov eax, STATUS_SUCCESS ret StartIo endp IrpFile proc pMyDevice : PDEVICE_OBJECT, pIrp : PIRP IoGetCurrentIrpStackLocation pIrp movzx eax, (IO_STACK_LOCATION ptr [eax]).MajorFunction .if (eax == IRP_MJ_CREATE) || (eax == IRP_MJ_CLOSE) .if (eax == IRP_MJ_CREATE) invoke DbgPrint, $CTA0("IRP_MJ_CREATE") .else invoke DbgPrint, $CTA0("IRP_MJ_CLOSE") .endif mov eax, pIrp and (_IRP ptr [eax]).IoStatus.Information, 0 mov (_IRP ptr [eax]).IoStatus.Status, STATUS_SUCCESS fastcall IofCompleteRequest, pIrp, IO_NO_INCREMENT mov eax, STATUS_SUCCESS .elseif (eax == IRP_MJ_READ) || (eax == IRP_MJ_WRITE) .if (eax == IRP_MJ_READ) invoke DbgPrint, $CTA0("IrpFile, IRP_MJ_READ") .else invoke DbgPrint, $CTA0("IrpFile, IRP_MJ_WRITE") .endif IoGetCurrentIrpStackLocation pIrp IoMarkIrpPending pIrp invoke IoStartPacket, pMyDevice, pIrp, 0, NULL mov eax, STATUS_PENDING .endif ret IrpFile endp IrpPnp proc pMyDevice : PDEVICE_OBJECT, pIrp : PIRP local pDevExt : ptr local szSymName : UNICODE_STRING mov eax, pMyDevice push (DEVICE_OBJECT ptr [eax]).DeviceExtension pop pDevExt IoGetCurrentIrpStackLocation pIrp movzx eax, (IO_STACK_LOCATION ptr [eax]).MinorFunction .if eax == IRP_MN_START_DEVICE mov eax, pIrp mov (_IRP ptr [eax]).IoStatus.Status, STATUS_SUCCESS .elseif eax == IRP_MN_REMOVE_DEVICE invoke RtlInitUnicodeString, addr szSymName, $CTW0("\\DosDevices\\MyDriver") invoke IoDeleteSymbolicLink, addr szSymName mov eax, pIrp mov (_IRP ptr [eax]).IoStatus.Status, STATUS_SUCCESS mov eax, pDevExt invoke IoDetachDevice, (MyDeviceExtension ptr [eax]).pNextDev invoke IoDeleteDevice, pMyDevice fastcall IofCompleteRequest, pIrp, IO_NO_INCREMENT ret .endif IoSkipCurrentIrpStackLocation pIrp mov eax, pDevExt invoke IoCallDriver, (MyDeviceExtension ptr [eax]).pNextDev, pIrp ret IrpPnp endp AddDevice proc pMyDriver : PDRIVER_OBJECT, pPhyDevice : PDEVICE_OBJECT local pMyDevice : PDEVICE_OBJECT local szDevName : UNICODE_STRING local szSymName : UNICODE_STRING invoke RtlInitUnicodeString, addr szDevName, $CTW0("\\Device\\MyDriver") invoke RtlInitUnicodeString, addr szSymName, $CTW0("\\DosDevices\\MyDriver") invoke IoCreateDevice, pMyDriver, sizeof MyDeviceExtension, addr szDevName, FILE_DEVICE_UNKNOWN, 0, FALSE, addr pMyDevice .if eax == STATUS_SUCCESS invoke IoAttachDeviceToDeviceStack, pMyDevice, pPhyDevice .if eax != NULL push eax mov eax, pMyDevice mov eax, (DEVICE_OBJECT ptr [eax]).DeviceExtension pop (MyDeviceExtension ptr [eax]).pNextDev mov eax, pMyDevice or (DEVICE_OBJECT ptr [eax]).Flags, DO_BUFFERED_IO and (DEVICE_OBJECT ptr [eax]).Flags, not DO_DEVICE_INITIALIZING invoke IoCreateSymbolicLink, addr szSymName, addr szDevName .endif .endif ret AddDevice endp Unload proc pMyDriver : PDRIVER_OBJECT ret Unload endp DriverEntry proc pMyDriver : PDRIVER_OBJECT, pMyRegistry : PUNICODE_STRING mov eax, pMyDriver mov (DRIVER_OBJECT ptr [eax]).MajorFunction[IRP_MJ_PNP * (sizeof PVOID)], offset IrpPnp mov (DRIVER_OBJECT ptr [eax]).MajorFunction[IRP_MJ_CREATE * (sizeof PVOID)], offset IrpFile mov (DRIVER_OBJECT ptr [eax]).MajorFunction[IRP_MJ_CLOSE * (sizeof PVOID)], offset IrpFile mov (DRIVER_OBJECT ptr [eax]).MajorFunction[IRP_MJ_WRITE * (sizeof PVOID)], offset IrpFile mov (DRIVER_OBJECT ptr [eax]).MajorFunction[IRP_MJ_READ * (sizeof PVOID)], offset IrpFile mov (DRIVER_OBJECT ptr [eax]).DriverStartIo, offset StartIo mov (DRIVER_OBJECT ptr [eax]).DriverUnload, offset Unload mov eax, (DRIVER_OBJECT ptr [eax]).DriverExtension mov (DRIVER_EXTENSION ptr [eax]).AddDevice, AddDevice mov eax, STATUS_SUCCESS ret DriverEntry endp end
app.asm
.386p .model flat, stdcall option casemap:none include c:\masm32\include\windows.inc include c:\masm32\include\masm32.inc include c:\masm32\include\user32.inc include c:\masm32\include\msvcrt.inc include c:\masm32\Macros\Strings.mac include c:\masm32\include\kernel32.inc includelib c:\masm32\lib\user32.lib includelib c:\masm32\lib\masm32.lib includelib c:\masm32\lib\msvcrt.lib includelib c:\masm32\lib\kernel32.lib .const MSG_INFO db "I am error",0 MSG_WRITE db "WR: %s",10,13,0 MSG_READ db "RD: %s",10,13,0 MSG_LEN db "Length: %d",10,13,0 .data? hFile dd ? dwRet dd ? szBuffer db 256 dup(?) .code start: invoke CreateFile, $CTA0("\\\\.\\MyDriver"), GENERIC_READ or GENERIC_WRITE, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0 mov hFile, eax invoke wsprintf, offset szBuffer, offset MSG_INFO invoke StrLen, offset szBuffer mov dwRet, eax invoke crt_printf, offset MSG_WRITE, offset szBuffer invoke crt_printf, offset MSG_LEN, dwRet invoke WriteFile, hFile, offset szBuffer, dwRet, offset dwRet, 0 invoke crt_memset, offset szBuffer, 0, 255 invoke ReadFile, hFile, offset szBuffer, 255, offset dwRet, 0 invoke crt_printf, offset MSG_READ, offset szBuffer invoke crt_printf, offset MSG_LEN, dwRet invoke CloseHandle, hFile invoke ExitProcess, 0 end start end
完成