【求助】为啥wdm驱动加载后自动卸载并继续加载？
刚看书上wdm驱动的介绍，自己动手写了个wdm驱动，本以为编译成功便完事，没想到winxp上一加载，就自己卸载，并继续加载，并循环下去，看了半天，不得解，求帮助~~。下面是代码，主要是参考张帆的windows驱动详解:
#ifdef __cplusplus
extern "C"
{
#endif
#include <wdm.h>
#ifdef __cplusplus
}
#endif
#define arraysize(p) (sizeof(p)/sizeof((p)[0]))
typedef struct _DEVICE_EXTENSION
{
PDEVICE_OBJECT fdo;
PDEVICE_OBJECT NextStackDevice;
UNICODE_STRING ustrDeviceName;//设备名
UNICODE_STRING ustrSymLinkName;//符号链接名
}DEVICE_EXTENSION,*PDEVICE_EXTENSION;
void HelloWDMUnload(PDRIVER_OBJECT DriverObject);
NTSTATUS HelloWDMDispatchRoutine(PDEVICE_OBJECT fdo,PIRP Irp);
NTSTATUS DefaultPnpHandler(PDEVICE_EXTENSION pdx, PIRP Irp);
NTSTATUS HandleRemoveDevice(PDEVICE_EXTENSION pdx, PIRP Irp);
NTSTATUS HelloWDMPnp(PDEVICE_OBJECT fdo,
PIRP Irp);
NTSTATUS HelloWDMAddDevice(PDRIVER_OBJECT DriverObject,
PDEVICE_OBJECT PhysicalDeviceObject);
#pragma code_seg("INIT")
extern "C" NTSTATUS DriverEntry(PDRIVER_OBJECT pDriverObject,PUNICODE_STRING pRegistryPath)
{
_asm int 3
NTSTATUS status;
KdPrint(("Enter DriverEntry\n"));
pDriverObject -> DriverExtension->AddDevice = HelloWDMAddDevice;
pDriverObject ->MajorFunction[IRP_MJ_PNP] = HelloWDMPnp;
pDriverObject ->MajorFunction[IRP_MJ_DEVICE_CONTROL] = HelloWDMDispatchRoutine;
pDriverObject ->MajorFunction[IRP_MJ_CREATE] = HelloWDMDispatchRoutine;
pDriverObject ->MajorFunction[IRP_MJ_READ] = HelloWDMDispatchRoutine;
pDriverObject ->MajorFunction[IRP_MJ_WRITE] = HelloWDMDispatchRoutine;
pDriverObject->DriverUnload = HelloWDMUnload;
KdPrint(("DriverEntry end\n"));
return status;
}
NTSTATUS HelloWDMDispatchRoutine(PDEVICE_OBJECT fdo,PIRP Irp)
{
PAGED_CODE();
KdPrint(("Enter HelloWDMDispatchRoutine\n"));
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp,IO_NO_INCREMENT);
KdPrint(("Leave HelloWDMDispatchRoutine\n"));
return STATUS_SUCCESS;
}
#pragma code_seg("PAGE")
NTSTATUS HelloWDMAddDevice(PDRIVER_OBJECT DriverObject,
PDEVICE_OBJECT PhysicalDeviceObject)
{
KdPrint(("Enter HelloWDMAddDevice\n"));
NTSTATUS status;
PDEVICE_OBJECT fdo;
UNICODE_STRING devName;
RtlInitUnicodeString(&devName,L"\\Device\\MyWDMDevice");
status = IoCreateDevice(
DriverObject,
sizeof(DEVICE_EXTENSION),
&(UNICODE_STRING)devName,
FILE_DEVICE_UNKNOWN,
0,
FALSE,
&fdo);
if(!NT_SUCCESS(status))
return status;
PDEVICE_EXTENSION pdx = (PDEVICE_EXTENSION)fdo->DeviceExtension;
pdx->fdo = fdo;
pdx->NextStackDevice = IoAttachDeviceToDeviceStack(fdo,PhysicalDeviceObject);//挂接在设备堆栈上，返回下层堆栈位置
UNICODE_STRING symLinkName;
RtlInitUnicodeString(&symLinkName,L"\\DosDevice\\HelloWDM");
pdx->ustrDeviceName = devName;
pdx->ustrSymLinkName = symLinkName;
status = IoCreateSymbolicLink(&(UNICODE_STRING)symLinkName,
&(UNICODE_STRING)devName);
if(!NT_SUCCESS(status))
{
IoDeleteSymbolicLink(&pdx->ustrSymLinkName);
status = IoCreateSymbolicLink(&symLinkName,&devName);
if(!NT_SUCCESS(status))
return status;
}
fdo->Flags |= DO_BUFFERED_IO | DO_POWER_PAGABLE;
fdo->Flags &= ~DO_DEVICE_INITIALIZING;
KdPrint(("Leave HelloWDMAddDevice\n"));
return STATUS_SUCCESS;
}
#pragma code_seg("PAGE")
NTSTATUS HelloWDMPnp(PDEVICE_OBJECT fdo,
PIRP Irp)
{
PAGED_CODE();//该宏保证该例程运行在低于APC_LEVEL的中断优先级的级别上
KdPrint(("Enter HelloWDMPnp\n"));
NTSTATUS status = STATUS_SUCCESS;
PDEVICE_EXTENSION pdx = (PDEVICE_EXTENSION)fdo->DeviceExtension;
PIO_STACK_LOCATION stack = IoGetCurrentIrpStackLocation(Irp);
static NTSTATUS (*fcntab[])(PDEVICE_EXTENSION pdx,PIRP Irp) =
{
DefaultPnpHandler, // IRP_MN_START_DEVICE
DefaultPnpHandler, // IRP_MN_QUERY_REMOVE_DEVICE
HandleRemoveDevice, // IRP_MN_REMOVE_DEVICE
DefaultPnpHandler, // IRP_MN_CANCEL_REMOVE_DEVICE
DefaultPnpHandler, // IRP_MN_STOP_DEVICE
DefaultPnpHandler, // IRP_MN_QUERY_STOP_DEVICE
DefaultPnpHandler, // IRP_MN_CANCEL_STOP_DEVICE
DefaultPnpHandler, // IRP_MN_QUERY_DEVICE_RELATIONS
DefaultPnpHandler, // IRP_MN_QUERY_INTERFACE
DefaultPnpHandler, // IRP_MN_QUERY_CAPABILITIES
DefaultPnpHandler, // IRP_MN_QUERY_RESOURCES
DefaultPnpHandler, // IRP_MN_QUERY_RESOURCE_REQUIREMENTS
DefaultPnpHandler, // IRP_MN_QUERY_DEVICE_TEXT
DefaultPnpHandler, // IRP_MN_FILTER_RESOURCE_REQUIREMENTS
DefaultPnpHandler, //
DefaultPnpHandler, // IRP_MN_READ_CONFIG
DefaultPnpHandler, // IRP_MN_WRITE_CONFIG
DefaultPnpHandler, // IRP_MN_EJECT
DefaultPnpHandler, // IRP_MN_SET_LOCK
DefaultPnpHandler, // IRP_MN_QUERY_ID
DefaultPnpHandler, // IRP_MN_QUERY_PNP_DEVICE_STATE
DefaultPnpHandler, // IRP_MN_QUERY_BUS_INFORMATION
DefaultPnpHandler, // IRP_MN_DEVICE_USAGE_NOTIFICATION
DefaultPnpHandler, // IRP_MN_SURPRISE_REMOVAL
};
ULONG fcn = stack->MinorFunction;
if(fcn >= arraysize(fcntab))
{
//未知的IRP类别
status = DefaultPnpHandler(pdx,Irp);//对于未知的IRP类别，我们让DefaultPnpHandler函数处理
return status;
}
status = (*fcntab[fcn])(pdx,Irp);//根据pnp功能号调用函数指针
KdPrint(("Leave HelloWDMPnp\n"));
return status;
}
#pragma code_seg("PAGE")
NTSTATUS DefaultPnpHandler(PDEVICE_EXTENSION pdx, PIRP Irp)
{
PAGED_CODE();
KdPrint(("Enter DefaultPnpHandler\n"));
IoSkipCurrentIrpStackLocation(Irp);//忽略当前堆栈
KdPrint(("Leave DefaultPnpHandler\n"));
return IoCallDriver(pdx->NextStackDevice,Irp);//用下层堆栈的驱动设备对象处理此IRP
}
#pragma code_seg("PAGE")
NTSTATUS HandleRemoveDevice(PDEVICE_EXTENSION pdx, PIRP Irp)
{
PAGED_CODE();
KdPrint(("Enter HandleRemoveDevice\n"));
Irp->IoStatus.Status = STATUS_SUCCESS;
NTSTATUS status = DefaultPnpHandler(pdx,Irp);
IoDeleteSymbolicLink(&(UNICODE_STRING)pdx->ustrSymLinkName);
//调用IoDetachDevice()把fdo从设备栈中脱开
if(pdx->NextStackDevice)
IoDetachDevice(pdx->NextStackDevice);
//删除fdo
IoDeleteDevice(pdx->fdo);
KdPrint(("Leave HandleRemoveDevice\n"));
return status;
}
#pragma code_seg("PAGE")
void HelloWDMUnload(PDRIVER_OBJECT DriverObject)
{
PAGED_CODE();
KdPrint(("Enter HelloWDMUnload\n"));
KdPrint(("Leave HelloWDMUnload\n"));
}
inf文件：
/************************************************************************
* 文件名称:wdm_aaaa,inf
*************************************************************************/
;; The Win2K DDK documentation contains an excellent INF reference.
;--------- Version Section ---------------------------------------------------
[Version]
Signature="$CHICAGO$"
Provider=Guzy_Device
DriverVer=11/10/2012,1.0.0.0
; If device fits one of the standard classes, use the name and GUID here,
; otherwise create your own device class and GUID as this example shows.
Class=GuzyDevice
ClassGUID={EF2962F0-0D55-4bff-B8AA-2221EE8A79B0}
;--------- SourceDiskNames and SourceDiskFiles Section -----------------------
; These sections identify source disks and files for installation. They are
; shown here as an example, but commented out.
[SourceDisksNames]
1 = "wdm_aaaa",Disk1,,
[SourceDisksFiles]
wdm_aaaa.sys = 1,,
;--------- ClassInstall/ClassInstall32 Section -------------------------------
; Not necessary if using a standard class
; 9X Style
[ClassInstall]
Addreg=Class_AddReg
; NT Style
[ClassInstall32]
Addreg=Class_AddReg
[Class_AddReg]
HKR,,,,%DeviceClassName%
HKR,,Icon,,"-5"
;--------- DestinationDirs Section -------------------------------------------
[DestinationDirs]
YouMark_Files_Driver = 10,System32\Drivers
;--------- Manufacturer and Models Sections ----------------------------------
[Manufacturer]
%MfgName%=Mfg0
[Mfg0]
; PCI hardware Ids use the form
; PCI\VEN_aaaa&DEV_bbbb&SUBSYS_cccccccc&REV_dd
;改成你自己的ID
%DeviceDesc%=YouMark_DDI, PCI\VEN_9999&DEV_9999
;---------- DDInstall Sections -----------------------------------------------
; --------- Windows 9X -----------------
; Experimentation has shown that DDInstall root names greater than 19 characters
; cause problems in Windows 98
[YouMark_DDI]
CopyFiles=YouMark_Files_Driver
AddReg=YouMark_9X_AddReg
[YouMark_9X_AddReg]
HKR,,DevLoader,,*ntkern
HKR,,NTMPDriver,,wdm_aaaa.sys
HKR, "Parameters", "BreakOnEntry", 0x00010001, 0
; --------- Windows NT -----------------
[YouMark_DDI.NT]
CopyFiles=YouMark_Files_Driver
AddReg=YouMark_NT_AddReg
[YouMark_DDI.NT.Services]
Addservice = wdm_aaaa, 0x00000002, YouMark_AddService
[YouMark_AddService]
DisplayName = %SvcDesc%
ServiceType = 1 ; SERVICE_KERNEL_DRIVER
StartType = 3 ; SERVICE_DEMAND_START
ErrorControl = 1 ; SERVICE_ERROR_NORMAL
ServiceBinary = %10%\System32\Drivers\wdm_aaaa.sys
[YouMark_NT_AddReg]
HKLM, "System\CurrentControlSet\Services\wdm_aaaa\Parameters",\
"BreakOnEntry", 0x00010001, 0
; --------- Files (common) -------------
[YouMark_Files_Driver]
wdm_aaaa.sys
;--------- Strings Section ---------------------------------------------------
[Strings]
ProviderName="Guzy."
MfgName="Guzy Soft"
DeviceDesc="Hello World WDM!"
DeviceClassName="Guzy_Device"
SvcDesc="Guzy"
