diff options
Diffstat (limited to 'public/tier0/IOCTLCodes.h')
| -rw-r--r-- | public/tier0/IOCTLCodes.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/public/tier0/IOCTLCodes.h b/public/tier0/IOCTLCodes.h new file mode 100644 index 0000000..a8f50d0 --- /dev/null +++ b/public/tier0/IOCTLCodes.h @@ -0,0 +1,29 @@ +//========= Copyright Valve Corporation, All rights reserved. ============// +// +// Purpose: +// +// $NoKeywords: $ +// +//=============================================================================// +#ifndef IOCTLCODES_H +#define IOCTLCODES_H +#pragma once + +// Define the IOCTL codes we will use. The IOCTL code contains a command +// identifier, plus other information about the device, the type of access +// with which the file must have been opened, and the type of buffering. + +// Device type -- in the "User Defined" range." +#define DEVICE_FILE_TYPE 40000 + + +// The IOCTL function codes from 0x800 to 0xFFF are for customer use. + +#define IOCTL_WRITE_MSR \ + CTL_CODE( DEVICE_FILE_TYPE, 0x900, METHOD_BUFFERED, FILE_READ_ACCESS ) + +#define IOCTL_READ_MSR \ + CTL_CODE( DEVICE_FILE_TYPE, 0x901, METHOD_BUFFERED, FILE_READ_ACCESS ) + + +#endif IOCTLCODES_H |