101 lines
2.4 KiB
C++
101 lines
2.4 KiB
C++
//***************************************************************************
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//
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// UTILS.CPP
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//
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// Module: WMI Instance provider code for boot parameters
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//
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// Purpose: General purpose utilities.
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//
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// Copyright (c) 1997-1999 Microsoft Corporation
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//
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//***************************************************************************
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#include <objbase.h>
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#include "bootini.h"
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LPTSTR IDS_RegBootDirKey = _T("BootDir");
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LPTSTR IDS_BootIni = _T("boot.ini");
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LPTSTR IDS_CBootIni = _T("c:\\boot.ini");
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LPTSTR IDS_RegCurrentNTVersionSetup = _T("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Setup");
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PCHAR
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GetBootFileName(
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)
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{
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HKEY h_key;
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LPTSTR data = NULL;
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DWORD cbdata;
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DWORD type;
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LONG ret;
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ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
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IDS_RegCurrentNTVersionSetup,
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0,
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KEY_READ,
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&h_key
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);
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if (ret != ERROR_SUCCESS) {
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return NULL;
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}
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cbdata = 0;
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ret = RegQueryValueEx(h_key,
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IDS_RegBootDirKey,
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NULL,
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&type,
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(LPBYTE) data,
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&cbdata
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);
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if(ret == ERROR_MORE_DATA){
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data = (LPTSTR) BPAlloc(cbdata +
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(_tcslen(IDS_BootIni)+1)*sizeof(TCHAR));
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ret=RegQueryValueEx(h_key,
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IDS_RegBootDirKey,
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NULL,
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&type,
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(LPBYTE) data,
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&cbdata
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);
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}
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else{
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data = (LPTSTR) BPAlloc((_tcslen(IDS_CBootIni)+1)*sizeof(TCHAR));
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}
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if(data){
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_tcscat(data, IDS_CBootIni);
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}
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else{
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return NULL;
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}
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return data;
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}
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HANDLE GetFileHandle(PCHAR data,
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DWORD dwCreationDisposition,
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DWORD dwAccess
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)
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{
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LONG ret;
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if(!data){
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return INVALID_HANDLE_VALUE;
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}
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HANDLE h = CreateFile(data,
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dwAccess,
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FILE_SHARE_READ, // Exclusive Write Access
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NULL,
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dwCreationDisposition,
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0,
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NULL
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) ;
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if(INVALID_HANDLE_VALUE==h){
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ret=GetLastError();
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}
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return h;
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}
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