driver.h

来自「Programming the Microsoft Windows Driver」· C头文件 代码 · 共 56 行

// Declarations for wdmidle driver
// Copyright (C) 1999 by Walter Oney
// All rights reserved

#ifndef DRIVER_H
#define DRIVER_H
#include <generic.h>

#define DRIVERNAME "WDMIDLE"				// for use in messages
#define LDRIVERNAME L"WDMIDLE"

///////////////////////////////////////////////////////////////////////////////
// Device extension structure


typedef struct tagDEVICE_EXTENSION {
	PDEVICE_OBJECT DeviceObject;			// device object this extension belongs to
	PDEVICE_OBJECT LowerDeviceObject;		// next lower driver in same stack
	PDEVICE_OBJECT Pdo;						// the PDO
	IO_REMOVE_LOCK RemoveLock;				// removal control locking structure
	DEVQUEUE dqReadWrite;						// queue for read operations
	LONG handles;							// # open handles
	PGENERIC_EXTENSION pgx;
	} DEVICE_EXTENSION, *PDEVICE_EXTENSION;

///////////////////////////////////////////////////////////////////////////////
// Global functions

VOID RemoveDevice(IN PDEVICE_OBJECT fdo);
NTSTATUS CompleteRequest(IN PIRP Irp, IN NTSTATUS status, IN ULONG_PTR info);
NTSTATUS SendDeviceSetPower(IN PDEVICE_OBJECT fdo, IN DEVICE_POWER_STATE state, ULONG context, BOOLEAN wait = FALSE);
NTSTATUS StartDevice(PDEVICE_OBJECT fdo, PCM_PARTIAL_RESOURCE_LIST raw, PCM_PARTIAL_RESOURCE_LIST translated);
VOID StartIo(PDEVICE_OBJECT fdo, PIRP Irp);
VOID StopDevice(PDEVICE_OBJECT fdo, BOOLEAN oktouch = FALSE);

struct _POWERINFO;

NTSTATUS GetPowerInfoFromRegistry(PDEVICE_EXTENSION pdx, _POWERINFO* pip);
NTSTATUS WritePowerInfoToRegistry(PDEVICE_EXTENSION pdx, _POWERINFO* pip);
NTSTATUS ImplementPowerPolicy(PDEVICE_EXTENSION pdx, _POWERINFO* pip);

// I/O request handlers

NTSTATUS DispatchCreate(PDEVICE_OBJECT fdo, PIRP Irp);
NTSTATUS DispatchClose(PDEVICE_OBJECT fdo, PIRP Irp);
NTSTATUS DispatchReadWrite(PDEVICE_OBJECT fdo, PIRP Irp);
NTSTATUS DispatchControl(PDEVICE_OBJECT fdo, PIRP Irp);
NTSTATUS DispatchCleanup(PDEVICE_OBJECT fdo, PIRP Irp);
NTSTATUS DispatchPower(PDEVICE_OBJECT fdo, PIRP Irp);
NTSTATUS DispatchPnp(PDEVICE_OBJECT fdo, PIRP Irp);

extern BOOLEAN win98;
extern UNICODE_STRING servkey;

#endif // DRIVER_H