ntrawdv.c

一个提供档案及Partition作加解密的程式支援以下的加密演算法AESBlowfishCAST5SerpentTriple DESTwofishAES-BlowfishAES-TwofishAES-

/* The source code contained in this file has been derived from the source code
   of Encryption for the Masses 2.02a by Paul Le Roux. Modifications and
   additions to that source code contained in this file are Copyright (c) 2004-2005
   TrueCrypt Foundation and Copyright (c) 2004 TrueCrypt Team. Unmodified
   parts are Copyright (c) 1998-99 Paul Le Roux. This is a TrueCrypt Foundation
   release. Please see the file license.txt for full license details. */

#include "TCdefs.h"
#include "crypto.h"
#include "fat.h"
#include "volumes.h"

#include "apidrvr.h"
#include "ntdriver.h"
#include "ntvol.h"
#include "ntrawdv.h"

#pragma warning( disable : 4127 )

NTSTATUS
TCSendIRP_RawDevice (PDEVICE_OBJECT DeviceObject,
		      PEXTENSION Extension,
		      PVOID pUserBuffer,
		      ULONG uFlags,
		      UCHAR uMajorFunction,
		      PIRP Irp)
{
	PIO_STACK_LOCATION irpSp;
	PIO_STACK_LOCATION irpNextSp;
	NTSTATUS ntStatus;

	if (uFlags);		/* Remove compiler warning */

//	Dump ("Sending IRP...\n");

	irpSp = IoGetCurrentIrpStackLocation (Irp);
	irpNextSp = IoGetNextIrpStackLocation (Irp);

	irpSp->MajorFunction = uMajorFunction;
	irpSp->DeviceObject = DeviceObject;
	irpSp->FileObject = Extension->pfoDeviceFile;

	/* Copy our flags down one level, this is to get the proper
	   removable-media handling */
	irpNextSp->Flags = irpSp->Flags;

	/* Setup the lower drivers stack location */
	irpNextSp->MajorFunction = irpSp->MajorFunction;
	irpNextSp->MinorFunction = irpSp->MinorFunction;
	irpNextSp->DeviceObject = irpSp->DeviceObject;
	irpNextSp->FileObject = irpSp->FileObject;
	/* Copy over io parameters, this is a union, so it handles
	   deviceiocontrol & read/write */
	irpNextSp->Parameters.Read.Length = irpSp->Parameters.Read.Length;
	irpNextSp->Parameters.Read.ByteOffset = irpSp->Parameters.Read.ByteOffset;
	irpNextSp->Parameters.Read.Key = irpSp->Parameters.Read.Key;

	IoSetCompletionRoutine (Irp, TCCompletion, pUserBuffer, TRUE, TRUE, TRUE);
	ntStatus = IoCallDriver (Extension->pFsdDevice, Irp);

//	Dump ("IRP Sent!\n");
	return ntStatus;
}