kelas Win32_LogicalDiskToPartition
Kelas WMI asosiasi Win32_LogicalDiskToPartition berkaitan dengan drive disk logis dan partisi disk tempatnya berada.
Sintaks berikut disederhanakan dari kode Managed Object Format (MOF) dan menyertakan semua properti yang diwariskan. Properti dan metode dalam urutan alfabet, bukan urutan MOF.
Sintaks
[Dynamic, Provider("CIMWin32"), UUID("{8502C4FB-5FBB-11D2-AAC1-006008C78BC7}"), AMENDMENT]
class Win32_LogicalDiskToPartition : CIM_LogicalDiskBasedOnPartition
{
uint64 EndingAddress;
uint64 StartingAddress;
Win32_DiskPartition REF Antecedent;
Win32_LogicalDisk REF Dependent;
};
Anggota
Kelas Win32_LogicalDiskToPartition memiliki jenis anggota ini:
Properti
Kelas Win32_LogicalDiskToPartition memiliki properti ini.
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Antecedent
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Jenis data: Win32_DiskPartition
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Jenis akses: Baca-saja
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Kualifikasi: kunci, Ambil alih ("Antecedent"), MappingStrings ("WMI| Win32_DiskPartition")
Referensi ke instans yang mewakili properti partisi disk tempat disk logis berada.
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Tergantung
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Jenis data: Win32_LogicalDisk
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Jenis akses: Baca-saja
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Kualifikasi: kunci, Ambil Alih ("Dependen"), MappingStrings ("WMI| Win32_LogicalDisk")
Referensi ke instans yang mewakili properti disk logis yang berada di partisi disk fisik.
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EndingAddress
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Jenis data: uint64
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Jenis akses: Baca-saja
Menunjukkan akhir tingkat tinggi dalam penyimpanan tingkat bawah. Properti ini berguna saat memetakan jangkauan yang tidak berdampingan ke dalam pengelompokan tingkat yang lebih tinggi.
Untuk informasi selengkapnya tentang menggunakan nilai uint64 dalam skrip, lihat Pembuatan skrip di WMI.
Properti ini diwarisi dari CIM_BasedOn.
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StartingAddress
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Jenis data: uint64
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Jenis akses: Baca-saja
Menunjukkan awal tingkat tinggi dalam penyimpanan tingkat bawah.
Untuk informasi selengkapnya tentang menggunakan nilai uint64 dalam skrip, lihat Pembuatan skrip di WMI.
Properti ini diwarisi dari CIM_BasedOn.
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Keterangan
Kelas Win32_LogicalDiskToPartition berasal dari CIM_LogicalDiskBasedOnPartition.
Untuk informasi selengkapnya tentang pemetaan antara drive logis dan disk fisik, lihat Bagaimana Cara Menghubungkan Drive Logis dan Disk Fisik?.
Contoh
Sampel kode C++ berikut menjelaskan cara mengambil huruf drive untuk drive disk tertentu.
#define _WIN32_DCOM
#include <iostream>
using namespace std;
#include <comdef.h>
#include <Wbemidl.h>
#pragma comment(lib, "wbemuuid.lib")
BOOL wmi_run();
BOOL wmi_getDriveLetters();
BOOL wmi_close();
IWbemLocator *pLoc = NULL;
IWbemServices *pSvc = NULL;
int main(int argc, char **argv)
{
wmi_run();
wmi_getDriveLetters();
system("pause");
wmi_close();
}
//
// Step 1-5 at:
// https://msdn.microsoft.com/library/aa390423(VS.85).aspx
BOOL wmi_run()
{
HRESULT hres;
// Step 1: --------------------------------------------------
// Initialize COM. ------------------------------------------
hres = CoInitializeEx(0, COINIT_MULTITHREADED);
if (FAILED(hres))
{
cout << "Failed to initialize COM library. Error code = 0x"
<< hex << hres << endl;
return 1; // Program has failed.
}
// Step 2: --------------------------------------------------
// Set general COM security levels --------------------------
// Note: If you are using Windows 2000, you need to specify -
// the default authentication credentials for a user by using
// a SOLE_AUTHENTICATION_LIST structure in the pAuthList ----
// parameter of CoInitializeSecurity ------------------------
hres = CoInitializeSecurity(
NULL,
-1, // COM authentication
NULL, // Authentication services
NULL, // Reserved
RPC_C_AUTHN_LEVEL_DEFAULT, // Default authentication
RPC_C_IMP_LEVEL_IMPERSONATE, // Default Impersonation
NULL, // Authentication info
EOAC_NONE, // Additional capabilities
NULL // Reserved
);
if (FAILED(hres))
{
cout << "Failed to initialize security. Error code = 0x"
<< hex << hres << endl;
CoUninitialize();
return 1; // Program has failed.
}
// Step 3: ---------------------------------------------------
// Obtain the initial locator to WMI -------------------------
//IWbemLocator *pLoc = NULL;
hres = CoCreateInstance(
CLSID_WbemLocator,
0,
CLSCTX_INPROC_SERVER,
IID_IWbemLocator, (LPVOID *) &pLoc);
if (FAILED(hres))
{
cout << "Failed to create IWbemLocator object."
<< " Err code = 0x"
<< hex << hres << endl;
CoUninitialize();
return 1; // Program has failed.
}
// Step 4: -----------------------------------------------------
// Connect to WMI through the IWbemLocator::ConnectServer method
//IWbemServices *pSvc = NULL;
// Connect to the root\cimv2 namespace with
// the current user and obtain pointer pSvc
// to make IWbemServices calls.
hres = pLoc->ConnectServer(
_bstr_t(L"ROOT\\CIMV2"), // Object path of WMI namespace
NULL, // User name. NULL = current user
NULL, // User password. NULL = current
0, // Locale. NULL indicates current
NULL, // Security flags.
0, // Authority (e.g. Kerberos)
0, // Context object
&pSvc // pointer to IWbemServices proxy
);
if (FAILED(hres))
{
cout << "Could not connect. Error code = 0x"
<< hex << hres << endl;
pLoc->Release();
CoUninitialize();
return 1; // Program has failed.
}
cout << "Connected to ROOT\\CIMV2 WMI namespace" << endl;
// Step 5: --------------------------------------------------
// Set security levels on the proxy -------------------------
hres = CoSetProxyBlanket(
pSvc, // Indicates the proxy to set
RPC_C_AUTHN_WINNT, // RPC_C_AUTHN_xxx
RPC_C_AUTHZ_NONE, // RPC_C_AUTHZ_xxx
NULL, // Server principal name
RPC_C_AUTHN_LEVEL_CALL, // RPC_C_AUTHN_LEVEL_xxx
RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx
NULL, // client identity
EOAC_NONE // proxy capabilities
);
if (FAILED(hres))
{
cout << "Could not set proxy blanket. Error code = 0x"
<< hex << hres << endl;
pSvc->Release();
pLoc->Release();
CoUninitialize();
return 1; // Program has failed.
}
return 0;
}
//
// get Drives, logical Drives and Driveletters
BOOL wmi_getDriveLetters()
{
// Use the IWbemServices pointer to make requests of WMI.
// Make requests here:
HRESULT hres;
IEnumWbemClassObject* pEnumerator = NULL;
// get localdrives
hres = pSvc->ExecQuery(
bstr_t("WQL"),
bstr_t("SELECT * FROM Win32_DiskDrive"),
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
NULL,
&pEnumerator);
if (FAILED(hres)) {
cout << "Query for processes failed. "
<< "Error code = 0x"
<< hex << hres << endl;
pSvc->Release();
pLoc->Release();
CoUninitialize();
return FALSE; // Program has failed.
}
else {
IWbemClassObject *pclsObj;
ULONG uReturn = 0;
while (pEnumerator) {
hres = pEnumerator->Next(WBEM_INFINITE, 1,
&pclsObj, &uReturn);
if(0 == uReturn) break;
VARIANT vtProp;
hres = pclsObj->Get(_bstr_t(L"DeviceID"), 0, &vtProp, 0, 0);
// adjust string
wstring tmp = vtProp.bstrVal;
tmp = tmp.substr(4);
wstring wstrQuery = L"Associators of {Win32_DiskDrive.DeviceID='\\\\.\\";
wstrQuery += tmp;
wstrQuery += L"'} where AssocClass=Win32_DiskDriveToDiskPartition";
// reference drive to partition
IEnumWbemClassObject* pEnumerator1 = NULL;
hres = pSvc->ExecQuery(
bstr_t("WQL"),
bstr_t( wstrQuery.c_str()),
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
NULL,
&pEnumerator1 );
if ( FAILED(hres) ) {
cout << "Query for processes failed. "
<< "Error code = 0x"
<< hex << hres << endl;
pSvc->Release();
pLoc->Release();
CoUninitialize();
return FALSE; // Program has failed.
} else {
IWbemClassObject *pclsObj1;
ULONG uReturn1 = 0;
while( pEnumerator1 ) {
hres = pEnumerator1->Next( WBEM_INFINITE, 1,
&pclsObj1, &uReturn1 );
if(0 == uReturn1) break;
// reference logical drive to partition
VARIANT vtProp1;
hres = pclsObj1->Get( _bstr_t(L"DeviceID"), 0, &vtProp1, 0, 0 );
wstring wstrQuery = L"Associators of {Win32_DiskPartition.DeviceID='";
wstrQuery += vtProp1.bstrVal;
wstrQuery += L"'} where AssocClass=Win32_LogicalDiskToPartition";
IEnumWbemClassObject* pEnumerator2 = NULL;
hres = pSvc->ExecQuery(
bstr_t("WQL"),
bstr_t(wstrQuery.c_str()),
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
NULL,
&pEnumerator2 );
if ( FAILED(hres) ) {
cout << "Query for processes failed. "
<< "Error code = 0x"
<< hex << hres << endl;
pSvc->Release();
pLoc->Release();
CoUninitialize();
return FALSE; // Program has failed.
} else {
// get driveletter
IWbemClassObject *pclsObj2;
ULONG uReturn2 = 0;
while( pEnumerator2 ) {
hres = pEnumerator2->Next( WBEM_INFINITE, 1,
&pclsObj2, &uReturn2 );
if(0 == uReturn2) break;
VARIANT vtProp2;
hres = pclsObj2->Get( _bstr_t(L"DeviceID"), 0, &vtProp2, 0, 0 );
// print result
printf("%ls : %ls\n", vtProp.bstrVal, vtProp2.bstrVal);
VariantClear( &vtProp2 );
}
pclsObj1->Release();
}
VariantClear( &vtProp1 );
pEnumerator2->Release();
}
pclsObj->Release();
}
VariantClear( &vtProp );
pEnumerator1->Release();
}
}
pEnumerator->Release();
return TRUE;
}
BOOL wmi_close()
{
// Cleanup
// ========
pSvc->Release();
pLoc->Release();
CoUninitialize();
return 0; // Program successfully completed.
}
Persyaratan
| Persyaratan | Nilai |
|---|---|
| Klien minimum yang didukung |
Windows Vista |
| Server minimum yang didukung |
Windows Server 2008 |
| Ruang nama |
Root\CIMV2 |
| MOF |
|
| DLL |
|