Tài liệu Driver Type

Tài liệu Driver Type

Specifying Device Types

Each device object has a device type, which is stored in the DeviceType member of its DEVICE_OBJECT

structure The device type represents the type of underlying hardware for the driver

Every kernel-mode driver that creates a device object must specify an appropriate device type value when calling

IoCreateDevice The IoCreateDevice routine uses the supplied device type to initialize the DeviceType

member of the DEVICE_OBJECT structure

The system defines the following device type values, listed in alphabetical order:

#define FILE_DEVICE_8042_PORT       0x00000027

#define FILE_DEVICE_ACPI      0x00000032

#define FILE_DEVICE_BATTERY       0x00000029

#define FILE_DEVICE_BEEP      0x00000001

#define FILE_DEVICE_BUS_EXTENDER        0x0000002a #define FILE_DEVICE_CD_ROM      0x00000002

#define FILE_DEVICE_CD_ROM_FILE_SYSTEM  0x00000003 #define FILE_DEVICE_CHANGER       0x00000030

#define FILE_DEVICE_CONTROLLER      0x00000004

#define FILE_DEVICE_DATALINK      0x00000005

#define FILE_DEVICE_DFS       0x00000006

#define FILE_DEVICE_DFS_FILE_SYSTEM     0x00000035

#define FILE_DEVICE_DFS_VOLUME      0x00000036

#define FILE_DEVICE_DISK      0x00000007

#define FILE_DEVICE_DISK_FILE_SYSTEM    0x00000008

#define FILE_DEVICE_DVD       0x00000033

#define FILE_DEVICE_FILE_SYSTEM         0x00000009

#define FILE_DEVICE_FIPS      0x0000003a #define FILE_DEVICE_FULLSCREEN_VIDEO    0x00000034

#define FILE_DEVICE_INPORT_PORT         0x0000000a #define FILE_DEVICE_KEYBOARD      0x0000000b #define FILE_DEVICE_KS      0x0000002f #define FILE_DEVICE_KSEC      0x00000039

#define FILE_DEVICE_MAILSLOT      0x0000000c #define FILE_DEVICE_MASS_STORAGE        0x0000002d #define FILE_DEVICE_MIDI_IN       0x0000000d #define FILE_DEVICE_MIDI_OUT      0x0000000e #define FILE_DEVICE_MODEM       0x0000002b #define FILE_DEVICE_MOUSE       0x0000000f #define FILE_DEVICE_MULTI_UNC_PROVIDER  0x00000010 #define FILE_DEVICE_NAMED_PIPE      0x00000011

#define FILE_DEVICE_NETWORK       0x00000012

#define FILE_DEVICE_NETWORK_BROWSER     0x00000013

#define FILE_DEVICE_NETWORK_FILE_SYSTEM 0x00000014 #define FILE_DEVICE_NETWORK_REDIRECTOR  0x00000028 #define FILE_DEVICE_NULL      0x00000015

#define FILE_DEVICE_PARALLEL_PORT       0x00000016

#define FILE_DEVICE_PHYSICAL_NETCARD    0x00000017

#define FILE_DEVICE_PRINTER       0x00000018

#define FILE_DEVICE_SCANNER       0x00000019

#define FILE_DEVICE_SCREEN      0x0000001c #define FILE_DEVICE_SERENUM       0x00000037

#define FILE_DEVICE_SERIAL_MOUSE_PORT   0x0000001a #define FILE_DEVICE_SERIAL_PORT         0x0000001b #define FILE_DEVICE_SMARTCARD       0x00000031

#define FILE_DEVICE_SMB       0x0000002e #define FILE_DEVICE_SOUND       0x0000001d #define FILE_DEVICE_STREAMS       0x0000001e #define FILE_DEVICE_TAPE      0x0000001f #define FILE_DEVICE_TAPE_FILE_SYSTEM    0x00000020

#define FILE_DEVICE_TERMSRV       0x00000038

#define FILE_DEVICE_TRANSPORT       0x00000021

#define FILE_DEVICE_UNKNOWN       0x00000022

#define FILE_DEVICE_VDM       0x0000002c #define FILE_DEVICE_VIDEO       0x00000023

#define FILE_DEVICE_VIRTUAL_DISK        0x00000024

#define FILE_DEVICE_WAVE_IN       0x00000025

#define FILE_DEVICE_WAVE_OUT      0x00000026

  Kernel-Mode Driver Architecture: Windows DDK Page 1 of 2 Specifying Device Types 9/19/2010 mk:@MSITStore:E:\WINDDK\3790.1830\help\kmarch.chm::/hh/kmarch/DevObjts_4614

These constants are defined in ntddk.h and wdm.h Check these files to see if additional device types have been

defined

The FILE_DEVICE_DISK specification covers both floppy and fixed-disk devices, as well as disk partitions

Intermediate drivers usually specify device types that represent the underlying device For example, the

system-supplied fault-tolerant disk driver, ftdisk, creates device objects of type FILE_DEVICE_DISK; it does not define

new device types for the mirror sets, stripe sets, and volume sets it manages

FILE_DEVICE_XXX values in the range of 0 through 32767 are reserved for Microsoft All driver writers must use

these system-defined constants for devices belonging to the system-defined device types

If a type of hardware does not match any of the defined types, specify a value of either FILE_DEVICE_UNKNOWN,

or a value within the range of 32768 through 65535

© Microsoft Corporation Send feedback on this topic Built on Friday, February 18, 2005

Page 2 of 2 Specifying Device Types

9/19/2010 mk:@MSITStore:E:\WINDDK\3790.1830\help\kmarch.chm::/hh/kmarch/DevObjts_4614