112 lines
2.7 KiB
C
112 lines
2.7 KiB
C
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/*++
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Copyright (c) 2001 Microsoft Corporation
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Module Name:
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pagefile.c
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Abstract:
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This module contains code to create a pagefile in the WinPE environment.
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[WinPE]
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PageFileSize = size - Creates a pagefile of the specified size named c:\pagefile.sys.
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Author:
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Adrian Cosma (acosma) 06/2001
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Revision History:
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--*/
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//
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// Include File(s):
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//
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#include "factoryp.h"
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//
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// Defined Value(s):
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//
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#define PAGEFILENAME _T("\\??\\C:\\pagefile.sys")
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#define PAGEFILESIZE 64
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//
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// External Function(s):
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//
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BOOL DisplayCreatePageFile(LPSTATEDATA lpStateData)
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{
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MEMORYSTATUSEX mStatus;
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static INT iRet = 0;
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if ( 0 == iRet )
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{
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// Fill in required values
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//
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ZeroMemory(&mStatus, sizeof(mStatus));
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mStatus.dwLength = sizeof(mStatus);
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// If we are running on less than or 64MB machine OR if there is a PageFileSize=x entry in the
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// winbom, set the static variable so we know whether this check has been done and if we need to
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// create the pagefile.
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//
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// iRet = 0 - we haven't initialized this yet
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// iRet = 1 - we don't need to create a pagefile
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// iRet = 0 - we need to create a pagefile
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//
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if ( ( ( GlobalMemoryStatusEx(&mStatus) ) &&
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( (mStatus.ullTotalPhys / (1024 * 1024)) <= 64) ) ||
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( IniSettingExists(lpStateData->lpszWinBOMPath, INI_SEC_WBOM_WINPE, INI_KEY_WBOM_WINPE_PAGEFILE, NULL) ) )
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{
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iRet = 2;
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}
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else
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{
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iRet = 1;
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}
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}
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return (iRet - 1);
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}
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BOOL CreatePageFile(LPSTATEDATA lpStateData)
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{
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NTSTATUS Status;
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UNICODE_STRING UnicodeString;
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LARGE_INTEGER liPageFileSize;
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BOOL bRet = TRUE;
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UINT uiPageFileSizeMB;
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if ( DisplayCreatePageFile(lpStateData) )
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{
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uiPageFileSizeMB = GetPrivateProfileInt(INI_SEC_WBOM_WINPE, INI_KEY_WBOM_WINPE_PAGEFILE, PAGEFILESIZE, lpStateData->lpszWinBOMPath);
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// If the user specified 0 means we don't want to create the file.
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//
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if ( uiPageFileSizeMB )
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{
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liPageFileSize.QuadPart = uiPageFileSizeMB * 1024 * 1024;
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// Request the privilege to create a pagefile.
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//
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EnablePrivilege(SE_CREATE_PAGEFILE_NAME, TRUE);
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RtlInitUnicodeString(&UnicodeString, PAGEFILENAME);
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Status = NtCreatePagingFile(&UnicodeString, &liPageFileSize, &liPageFileSize, 0);
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if ( !NT_SUCCESS(Status) )
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{
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bRet = FALSE;
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FacLogFile(0 | LOG_ERR, IDS_ERR_PAGEFILE, Status);
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}
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}
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}
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return bRet;
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}
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