Driver development 3: simple drivers with nothing to do

// Note that compiling requires the INC directory in the relative path and ntifs. Inc; and extended functions.

// # Include "ntifs. H"

// # Include "stdio. H"

// Constant definition;

# Define device_type_sysmon 0x8266 // DDK indicates that 0-7fffh is retained by the System

# Define nt_device_name l "// device // minsys" // kernel device name

# Define dos_device_name l "// dosdevices // minsys" // symbol used to connect to the device name

// Global variable definition;

Pdriver_object gowendriverobject; // driver object

Pdevice_object gctrldeviceobject; // The object field of the control device.

# Pragma code_seg ("page ")

Void // unload routine;

Unload (pdriver_object driverobject)

{

Unicode_string win32devicename;

Rtlinitunicodestring (& win32devicename, dos_device_name );

Iodeletesymboliclink (& win32devicename );

Iodeletedevice (gctrldeviceobject );

# If (DBG)

{

Dbuplint ("------------------- unload OK/N "));

}

# Endif

Return;

}

Ntstatus

Deviceirpcreate (in pdevice_object deviceobject, in piririrp)

{

Iocompleterequest (IRP, io_no_increment );

Return STATUS_SUCCESS;

}

Ntstatus

Deviceirpclose (in pdevice_object deviceobject, in piririrp)

{

Iocompleterequest (IRP, io_no_increment );

Return STATUS_SUCCESS;

}

Ntstatus

Deviceirpcontrol (in pdevice_object deviceobject, in piririrp)

{

Iocompleterequest (IRP, io_no_increment );

Return STATUS_SUCCESS;

}

# Pragma code_seg ("init ")

Ntstatus // driver entry;

DriverEntry (in pdriver_object driverobject, in punicode_string registrypath)

{

Ntstatus status;

Unicode_string ntdevicename;

Unicode_string win32devicename;

// Save your own driver object.

Gowendriverobject = driverobject;

// Initialize the Unicode string and create a device object;

Rtlinitunicodestring (& ntdevicename, nt_device_name );

Status = iocreatedevice (driverobject, 0, & ntdevicename,

Device_type_sysmon, 0, false, & gctrldeviceobject );

If (! Nt_success (Status) return status;

// Initialize the Unicode string and create a Win32 string connection so that the Win32 program can access it;

Rtlinitunicodestring (& win32devicename, dos_device_name );

Status = iocreatesymboliclink (& win32devicename, & ntdevicename );

If (! Nt_success (Status ))

{

Iodeletedevice (gctrldeviceobject );

Return status;

}

// Enter the driver dispatch routine

Driverobject-> majorfunction [irp_mj_create] = deviceirpcreate;

Driverobject-> majorfunction [irp_mj_close] = deviceirpclose;

Driverobject-> majorfunction [irp_mj_device_control] = deviceirpcontrol;

// Fill in the unload processing routine

Driverobject-> driverunload = unload;

# If (DBG)

{

Dbuplint ("driverobject = % x registrypath = % x/N", driverobject, registrypath );

}

# Endif

Return status;

}