65 lines
1.2 KiB
C
65 lines
1.2 KiB
C
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/*++ BUILD Version: 0001 // Increment this if a change has global effects
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Copyright (c) 1990-1999 Microsoft Corporation
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Module Name:
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ntddnull.h
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Abstract:
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This is the include file that defines all constants and types for
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accessing the Null device.
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Author:
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Steve Wood (stevewo) 27-May-1990
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Revision History:
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--*/
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#ifndef _NTDDNULL_
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#define _NTDDNULL_
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#if _MSC_VER > 1000
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#pragma once
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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//
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// Device Name - this string is the name of the device. It is the name
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// that should be passed to NtOpenFile when accessing the device.
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//
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// Note: For devices that support multiple units, it should be suffixed
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// with the Ascii representation of the unit number.
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//
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#define DD_NULL_DEVICE_NAME "\\Device\\Null"
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//
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// NtDeviceIoControlFile IoControlCode values for this device.
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//
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// Warning: Remember that the low two bits of the code specify how the
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// buffers are passed to the driver!
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//
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#define IOCTL_NULL_BASE FILE_DEVICE_NULL
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//
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// NtDeviceIoControlFile InputBuffer/OutputBuffer record structures for
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// this device.
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//
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#ifdef __cplusplus
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}
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#endif
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#endif // _NTDDNULL_
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