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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 DDKPage 1 of 2Specifying Device Types9/19/2010mk:@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 2Specifying Device Types9/19/2010mk:@MSITStore:E:\WINDDK\3790.1830\help\kmarch.chm::/hh/kmarch/DevObjts_4614 . . 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. underlying hardware for the driver. Every kernel-mode driver that creates a device object must specify an appropriate device type value when calling IoCreateDevice.