187 lines
4.1 KiB
C
187 lines
4.1 KiB
C
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/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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OEMHard.c
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Abstract:
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Author:
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Revision History:
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--*/
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#ifndef UNICODE
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#define UNICODE
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#endif
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#ifndef _UNICODE
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#define _UNICODE
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#endif
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#include "msgina.h"
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#include "machinep.h"
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#if defined(_X86_)
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ULONG
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RegGetMachineIdentifierValue(
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IN OUT PULONG Value
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)
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/*++
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Routine Description:
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Given a unicode value name this routine will go into the registry
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location for the machine identifier information and get the
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value.
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Arguments:
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Value - a pointer to the ULONG for the result.
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Return Value:
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NTSTATUS
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If STATUS_SUCCESSFUL is returned, the location *Value will be
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updated with the DWORD value from the registry. If any failing
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status is returned, this value is untouched.
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--*/
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{
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LONG lRet;
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HKEY hKey;
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DWORD dwType;
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TCHAR tchData[100];
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PTCHAR ptchData = tchData;
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DWORD dwData = sizeof(tchData);
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int cchCompareF, cchCompareN;
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LCID lcid;
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//
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// Set default as PC/AT
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//
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*Value = MACHINEID_MS_PCAT;
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//
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// Open registry key
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//
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lRet = RegOpenKeyEx( HKEY_LOCAL_MACHINE, // hRootKey
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REGISTRY_HARDWARE_SYSTEM, // SubKey
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0, // Reserved
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KEY_READ, // Read Op.
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&hKey ); // hKey
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if( lRet != ERROR_SUCCESS ) return( lRet );
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//
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// Read registry key
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//
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ReTryRead:
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lRet = RegQueryValueEx( hKey, // kKey
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REGISTRY_MACHINE_IDENTIFIER, // ValueName
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NULL, // Reserved
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&dwType, // Data Type
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(LPBYTE)ptchData, // Data buffer
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&dwData ); // Data buffer size
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if( lRet != ERROR_SUCCESS ) {
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if( lRet != ERROR_MORE_DATA ) goto Exit1;
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//
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// the Buffer is too small to store the data, we retry with
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// large buffer.
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//
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dwData += 2;
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ptchData = LocalAlloc( LMEM_FIXED , dwData );
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if( ptchData == NULL ) {
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lRet = ERROR_NOT_ENOUGH_MEMORY;
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goto Exit1;
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}
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goto ReTryRead;
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}
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//
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// Determine platform.
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//
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lcid = MAKELCID( MAKELANGID( LANG_NEUTRAL, SUBLANG_SYS_DEFAULT ),
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SORT_DEFAULT );
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cchCompareF = lstrlen( FUJITSU_FMR_NAME );
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cchCompareN = lstrlen( NEC_PC98_NAME );
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if( CompareString( lcid, // Locale id
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NORM_IGNORECASE, // Ignoare case
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ptchData, // String A.
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cchCompareF, // length of string A to compare
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FUJITSU_FMR_NAME, // String B.
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cchCompareF ) // length of string B to compare
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== 2 // String A == String B
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) {
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//
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// Fujitsu FMR Series.
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//
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*Value = MACHINEID_FUJITSU_FMR;
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} else if( CompareString( lcid, // Locale id
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NORM_IGNORECASE, // Igonre case
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ptchData, // String A.
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cchCompareN, // length of string A to compare
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NEC_PC98_NAME, // String B.
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cchCompareN ) // length of string B to compare
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== 2 // String A == String B
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) {
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//
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// NEC PC-9800 Seriss
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//
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*Value = MACHINEID_NEC_PC98;
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} else {
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//
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// Standard PC/AT comapatibles
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//
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*Value = MACHINEID_MS_PCAT;
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}
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Exit1:
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RegCloseKey( hKey );
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return( lRet );
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}
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DWORD dwMachineId = MACHINEID_MS_PCAT;
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VOID InitializeOEMId(VOID)
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{
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RegGetMachineIdentifierValue(&dwMachineId);
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}
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BOOL IsNEC_PC9800(VOID)
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{
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return((dwMachineId & PC_9800_COMPATIBLE) ? TRUE : FALSE);
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}
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#endif // defined(_X86_)
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