driverentry.cpp

Programming the Microsoft Windows Driver Model(2nd)

// DriverEntry.cpp - Main program for SEHTEST sample driver
// Copyright (C) 1999, 2002 by Walter Oney
// All rights reserved

#include "stddcls.h"

#define DRIVERNAME "SEHTEST"

///////////////////////////////////////////////////////////////////////////////

extern "C" NTSTATUS DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegistryPath)
	{							// DriverEntry
	KdPrint((DRIVERNAME " - Entering DriverEntry\n"));

	BOOLEAN win9x = !IoIsWdmVersionAvailable(1, 0x10);

	PVOID p = (PVOID) 1;

	// Exception raised by ProbeForWrite on misaligned address

	__try
		{
		KdPrint((DRIVERNAME " - About to generate alignment exception in ProbeForWrite\n"));
		ProbeForWrite(p, 4, 4);
		KdPrint((DRIVERNAME " - You shouldn't see this message\n"));
		}
	__except(EXCEPTION_EXECUTE_HANDLER)
		{
		KdPrint((DRIVERNAME " - Exception was caught - %X\n", GetExceptionCode()));
		}

	// Exception due to user-mode pointer dereference

	if (win9x)
		p = (PVOID) 0x01000000;
	__try
		{
		KdPrint((DRIVERNAME " - About to generate page fault\n"));
		int x = *(int*) p;
		KdPrint((DRIVERNAME " - You shouldn't see this message\n"));
		}
	__except(EXCEPTION_EXECUTE_HANDLER)
		{
		KdPrint((DRIVERNAME " - Exception was caught - %X\n", GetExceptionCode()));
		}

	// Exception raised by ProbeForWrite on kernel-mode address

	__try
		{
		KdPrint((DRIVERNAME " - About to generate access exception in ProbeForWrite\n"));
		p = (PVOID) &p;
		ProbeForWrite(p, 4, 4);
		KdPrint((DRIVERNAME " - You shouldn't see this message\n"));
		}
	__except(EXCEPTION_EXECUTE_HANDLER)
		{
		KdPrint((DRIVERNAME " - Exception was caught - %X\n", GetExceptionCode()));
		}

	// Debug exception

#ifdef _X86_

	__try
		{
		KdPrint((DRIVERNAME " - About to generate debug exception\n"));
		_asm pushfd
		_asm or dword ptr [esp], 100h	; trap flag
		_asm popfd
		_asm test eax, eax
		KdPrint((DRIVERNAME " - You shouldn't see this message\n"));
		}
	__except(EXCEPTION_EXECUTE_HANDLER)
		{
		KdPrint((DRIVERNAME " - Exception was caught - %X\n", GetExceptionCode()));
		}

	// Breakpoint exception

	__try
		{
		KdPrint((DRIVERNAME " - About to generate breakpoint exception\n"));
		_asm int 3
		KdPrint((DRIVERNAME " - You shouldn't see this message\n"));
		}
	__except(EXCEPTION_EXECUTE_HANDLER)
		{
		KdPrint((DRIVERNAME " - Exception was caught - %X\n", GetExceptionCode()));
		}

	// Overflow exception

	__try
		{
		KdPrint((DRIVERNAME " - About to generate overflow exception\n"));
		_asm mov eax, 0x80000000
		_asm add eax, 0x80000000
		_asm into
		KdPrint((DRIVERNAME " - You shouldn't see this message\n"));
		}
	__except(EXCEPTION_EXECUTE_HANDLER)
		{
		KdPrint((DRIVERNAME " - Exception was caught - %X\n", GetExceptionCode()));
		}

#endif // _X86_

	// Enough!!

	KdPrint((DRIVERNAME " - Program kept control after exceptions\n"));

	__try
		{
		return STATUS_UNSUCCESSFUL;
		}
	__finally
		{
		KdPrint((DRIVERNAME " - Failing DriverEntry; cleanup handler got control first\n"));
		}

	KdPrint((DRIVERNAME " - You shouldn't see this message\n"));

	return STATUS_SUCCESS;		// never reached
	}							// DriverEntry