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29 lines
864 B
29 lines
864 B
//========= Copyright Valve Corporation, All rights reserved. ============// |
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// |
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// Purpose: |
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// |
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// $NoKeywords: $ |
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// |
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//=============================================================================// |
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#ifndef IOCTLCODES_H |
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#define IOCTLCODES_H |
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#pragma once |
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// Define the IOCTL codes we will use. The IOCTL code contains a command |
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// identifier, plus other information about the device, the type of access |
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// with which the file must have been opened, and the type of buffering. |
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// Device type -- in the "User Defined" range." |
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#define DEVICE_FILE_TYPE 40000 |
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// The IOCTL function codes from 0x800 to 0xFFF are for customer use. |
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#define IOCTL_WRITE_MSR \ |
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CTL_CODE( DEVICE_FILE_TYPE, 0x900, METHOD_BUFFERED, FILE_READ_ACCESS ) |
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#define IOCTL_READ_MSR \ |
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CTL_CODE( DEVICE_FILE_TYPE, 0x901, METHOD_BUFFERED, FILE_READ_ACCESS ) |
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#endif IOCTLCODES_H
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