无法从 32 位进程访问 Win32_WinSAT [英] Cannot access Win32_WinSAT from 32 bits process
问题描述
当从 x64 进程请求 Win32_WinSAT 时,我得到正确的结果 (WinSATAssessmentState = 1),但当从 x86 执行时,我得到结果不可用"(WinSATAssessmentState = 3)
When requesting Win32_WinSAT from a x64 process I get the correct results (WinSATAssessmentState = 1), but when executed from a x86 I get "results not available" (WinSATAssessmentState = 3)
x64 Powershell:
x64 Powershell:
PS C:\Users\alive> gwmi Win32_WinSAT
__GENUS : 2
__CLASS : Win32_WinSAT
__SUPERCLASS :
__DYNASTY : Win32_WinSAT
__RELPATH : Win32_WinSAT.TimeTaken="MostRecentAssessment"
__PROPERTY_COUNT : 8
__DERIVATION : {}
__SERVER : COMPNAME
__NAMESPACE : root\cimv2
__PATH : \\COMPNAME\root\cimv2:Win32_WinSAT.TimeTaken="MostRecentAssessment"
CPUScore : 7,2
D3DScore : 6,3
DiskScore : 7,65
GraphicsScore : 4,6
MemoryScore : 5,9
TimeTaken : MostRecentAssessment
WinSATAssessmentState : 1
WinSPRLevel : 4,6
PSComputerName : COMPNAME
x86 Powershell
x86 Powershell
PS C:\Users\alive> gwmi Win32_WinSAT
__GENUS : 2
__CLASS : Win32_WinSAT
__SUPERCLASS :
__DYNASTY : Win32_WinSAT
__RELPATH : Win32_WinSAT.TimeTaken="MostRecentAssessment"
__PROPERTY_COUNT : 8
__DERIVATION : {}
__SERVER : COMPNAME
__NAMESPACE : root\cimv2
__PATH : \\COMPNAME\root\cimv2:Win32_WinSAT.TimeTaken="MostRecentAssessment"
CPUScore : 0
D3DScore : 0
DiskScore : 0
GraphicsScore : 0
MemoryScore : 0
TimeTaken : MostRecentAssessment
WinSATAssessmentState : 3
WinSPRLevel : 0
PSComputerName : COMPNAME
是否有任何标志或特殊方法可以从 x86 进程访问此信息?
Is there any flag or special method to be able to access this information from the x86 process?
谢谢.
推荐答案
您的问题属于 在 64 位平台上请求 WMI 数据.
默认情况下,当存在两个版本的提供程序时,应用程序或脚本会从相应的提供程序接收数据.32 位提供程序向 32 位应用程序返回数据,包括所有脚本,64 位提供程序向 64 位编译应用程序返回数据.但是,应用程序或脚本可以从非默认提供程序(如果存在)请求数据,方法是通过方法调用上的标志通知 WMI.__ProviderArchitecture 和 __RequiredArchitecture 字符串标志具有一组由 WMI 处理但未在 SDK 头文件或类型库文件中定义的值.这些值放置在上下文参数中,以向 WMI 发出信号,告知它应该从非默认提供程序请求数据.
By default, an application or script receives data from the corresponding provider when two versions of providers exist. The 32-bit provider returns data to a 32-bit application, including all scripts, and the 64-bit provider returns data to the 64-bit compiled applications. However, an application or script can request data from the nondefault provider, if it exists, by notifying WMI through flags on method calls. The __ProviderArchitecture and __RequiredArchitecture string flags have a set of values handled by WMI but not defined in SDK header or type library files. The values are placed in a context parameter to signal WMI that it should request data from the nondefault provider.
我不知道如何使用 PowerShell CmdLets 执行此操作,但您可以使用 .NET Framework 中的System.Management"类(COM 对象封装).
I don't know how to do that with PowerShell CmdLets, but you can use "System.Management" classes from the .NET Framework (COM object encapsulation).
# Setup the context information
$mContext = New-Object System.Management.ManagementNamedValueCollection
$mContext.Add( "__ProviderArchitecture", 64)
$mContext.Add( "__RequiredArchitecture", $true)
# Setup the Authrntification object
$ConOptions = New-Object System.Management.ConnectionOptions
#$ConOptions.Username = "computername\administrateur" # Should be used for remote access
#$ConOptions.Password = "toto"
$ConOptions.EnablePrivileges = $true
$ConOptions.Impersonation = "Impersonate"
$ConOptions.Authentication = "Default"
$ConOptions.Context = $mContext
# Setup the management scope (change with the computer name for remote access)
$mScope = New-Object System.Management.ManagementScope("\\localhost\root\cimV2", $ConOptions)
$mScope.Connect()
# Query
$queryString = "SELECT * From Win32_WinSAT"
$oQuery = New-Object System.Management.ObjectQuery ($queryString)
$oSearcher = New-Object System.Management.ManagementObjectSearcher ($mScope, $oQuery)
$oSearcher.Get();
我在 Windows 8 中从 32 位和 64 位 PowerShell 执行此脚本,并且两者都有效.
I execute this script bith from 32 and 64 bits PowerShell in Windows 8 and both works.
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