【发布时间】：2010-12-31 19:21:39
【问题描述】：
大家好，除夕/新年快乐，
我目前正在制作的驱动程序有一些问题。在我处理 WriteFile() 请求之前，一切正常。我的司机试图处理所有事情，但我遇到了蓝屏死机。
我必须将错误的确切位置指向此语句：
pWriteDataBuffer = MmGetSystemAddressForMdlSafe(Irp->MdlAddress, NormalPagePriority);
这是我完整的驱动程序代码（我正在学习各种教程，所以不要介意可怕的格式，我没有时间整理：
#include "ntddk.h"
const WCHAR deviceNameBuffer[] = L"\\Device\\MemoryMirrorDevice";
const WCHAR SymbolicLinkName[] = L"\\DosDevices\\MemoryMirrorLink";
PDEVICE_OBJECT g_DevicePointer= NULL; // Global pointer to our device object
int i = 0;
int y;
VOID OnUnload( IN PDRIVER_OBJECT DriverObject ){
UNICODE_STRING SymbolicLinkNameString;
DbgPrint("OnUnload called\n");
RtlInitUnicodeString(&SymbolicLinkNameString, SymbolicLinkName);
IoDeleteSymbolicLink(&SymbolicLinkNameString);
IoDeleteDevice(DriverObject->DeviceObject);
}
int IsStringTerminated(PCHAR pString, unsigned int uiLength){
int bStringIsTerminated = 0;
unsigned int uiIndex = 0;
while(uiIndex < uiLength && bStringIsTerminated == FALSE)
{
if(pString[uiIndex] == '\0')
{
bStringIsTerminated = 1;
}
else
{
uiIndex++;
}
}
return bStringIsTerminated;
}
NTSTATUS MyWrite(PDEVICE_OBJECT DeviceObject, PIRP Irp){
NTSTATUS NtStatus = STATUS_SUCCESS;
PIO_STACK_LOCATION pIoStackIrp = NULL;
PCHAR pWriteDataBuffer;
DbgPrint("MyWrite\r\n");
pIoStackIrp = IoGetCurrentIrpStackLocation(Irp);
if(pIoStackIrp)
{
pWriteDataBuffer = MmGetSystemAddressForMdlSafe(Irp->MdlAddress, NormalPagePriority);
return NtStatus;
if( pWriteDataBuffer != NULL )
{
if(IsStringTerminated(pWriteDataBuffer, pIoStackIrp->Parameters.Write.Length))
{
DbgPrint(pWriteDataBuffer);
}
}
}
return NtStatus;
}
void CheckErrors(NTSTATUS ntStatus){
i++;
DbgPrint("%i \n",i);
switch(ntStatus){
case STATUS_INSUFFICIENT_RESOURCES:
DbgPrint("INSUFFICIENT RESOURCES\n");
break;
case STATUS_OBJECT_NAME_EXISTS:
DbgPrint("Name exists\n");
break;
case STATUS_OBJECT_NAME_COLLISION:
DbgPrint("Name collission\n");
break;
case STATUS_SUCCESS:
DbgPrint("Success!\n");
break;
default:
DbgPrint("Error is not filtered!\n");
}
}
NTSTATUS OnStubDispatch(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp){
Irp->IoStatus.Status = STATUS_SUCCESS;
IoCompleteRequest(Irp, IO_NO_INCREMENT );
return STATUS_SUCCESS;
}
NTSTATUS DriverEntry( IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING theRegistryPath ){
NTSTATUS ntStatus = STATUS_SUCCESS;
UNICODE_STRING DeviceName;
UNICODE_STRING SymbolicLinkNameString;
DriverObject->DriverUnload = OnUnload;
RtlInitUnicodeString (&DeviceName, deviceNameBuffer );
RtlInitUnicodeString (&SymbolicLinkNameString, SymbolicLinkName);
ntStatus = IoCreateDevice ( DriverObject,0, &DeviceName, FILE_DEVICE_UNKNOWN, FILE_DEVICE_SECURE_OPEN, FALSE, &g_DevicePointer);
CheckErrors(ntStatus);
if(ntStatus == STATUS_SUCCESS){
ntStatus = IoCreateSymbolicLink( &SymbolicLinkNameString, &DeviceName);
CheckErrors(ntStatus);
}
for(y = 0; y < IRP_MJ_MAXIMUM_FUNCTION; y++ ){
DriverObject->MajorFunction[y] = OnStubDispatch;
}
DriverObject->MajorFunction[IRP_MJ_WRITE] = MyWrite;
return STATUS_SUCCESS;
}
当我的驱动程序收到 IRp 写入请求时，代码失败：
#include <iostream>
#include <windows.h>
using namespace std;
int _cdecl main(void){
HANDLE hFile;
DWORD dwReturn;
hFile = CreateFile("\\\\.\\MemoryMirrorLink",
GENERIC_READ | GENERIC_WRITE, 0, NULL,
OPEN_EXISTING, 0, NULL);
if(hFile){
WriteFile(hFile, "Hello from user mode!",sizeof("Hello from user mode!"), &dwReturn, NULL);
printf("Succes!");
CloseHandle(hFile);
} else {
printf("kthxbye: ");
cerr<<GetLastError()<<endl;
}
cin.ignore();
return 0;
}
有谁知道我做错了什么？ 非常感谢您的帮助！
【问题讨论】：
-
你能指出更多的崩溃细节吗？异常代码、异常详情等