324 lines
8.5 KiB
C++
324 lines
8.5 KiB
C++
/*++
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Copyright (c) Microsoft Corporation
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Title:
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Express Writer sample application
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Abstract:
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Helper functions implementation
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--*/
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#include "stdafx.h"
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///////////////////////////////////////////////////////////////////////////////
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//
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// LoadMetadata
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//
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///////////////////////////////////////////////////////////////////////////////
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bool LoadMetadata(
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__in IVssExpressWriter *pExpressWriter,
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__in PCWSTR wszParameter,
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__out PWSTR *pwszData
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)
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{
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HRESULT hr = S_OK;
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bool bResult = false;
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PWSTR wszData = NULL;
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HANDLE hFile = INVALID_HANDLE_VALUE;
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DWORD cbRead = 0;
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DWORD cbSize = 0;
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wprintf(L"INFO: LoadMetadata called\n");
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*pwszData = NULL;
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CHECK_CONDITION(wszParameter != NULL, L"LoadMetadata not called");
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//
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// Load from file
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//
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hFile = CreateFile(
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wszParameter, // file to open
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GENERIC_READ, // open for writing
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0, // don't share
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NULL, // default security
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OPEN_EXISTING, // existing file only
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FILE_ATTRIBUTE_NORMAL, // normal file
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NULL); // no attr. template
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CHECK_CONDITION(
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hFile != INVALID_HANDLE_VALUE,
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L"CreateFile failed with %lld",
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(LONGLONG)GetLastError());
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cbSize = GetFileSize(hFile, NULL);
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CHECK_CONDITION(
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cbSize != INVALID_FILE_SIZE,
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L"GetFileSize failed with %lld",
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(LONGLONG)GetLastError());
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wszData = (PWSTR)malloc(cbSize + sizeof(WCHAR));
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CHECK_CONDITION(
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wszData != NULL,
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L"malloc failed with %lld",
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(LONGLONG)GetLastError());
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ZeroMemory(wszData, cbSize + sizeof(WCHAR));
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CHECK_CONDITION(
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ReadFile(hFile, wszData, cbSize, &cbRead, NULL),
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L"ReadFile failed with %lld",
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(LONGLONG)GetLastError());
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CHECK_HR(
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pExpressWriter->LoadMetadata(wszData, 0),
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L"CreateVssExpressWriter failed");
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*pwszData = wszData;
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bResult = true;
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_exit:
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if (hFile != INVALID_HANDLE_VALUE)
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{
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CloseHandle(hFile);
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}
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return bResult;
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// SetRestoreMethod
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//
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///////////////////////////////////////////////////////////////////////////////
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bool SetRestoreMethod(
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__in IVssCreateExpressWriterMetadata *pMetadata,
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__in VSS_RESTOREMETHOD_ENUM Method,
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__in_opt LPCWSTR wszService,
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__in bool bRebootRequired
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)
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{
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HRESULT hr = S_OK;
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bool bResult = false;
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wprintf(L"INFO: SetRestoreMethod called\n");
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#pragma warning(suppress: 6387) //To allow NULL in the function call
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CHECK_HR(pMetadata->SetRestoreMethod(
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Method,
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wszService,
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NULL, // Reserved, must be NULL
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VSS_WRE_NEVER, // Must be VSS_WRE_NEVER
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bRebootRequired),
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L"SetRestoreMethod failed");
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bResult = true;
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_exit:
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return bResult;
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// AddComponent
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//
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///////////////////////////////////////////////////////////////////////////////
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bool AddComponent(
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__in IVssCreateExpressWriterMetadata *pMetadata,
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__in VSS_COMPONENT_TYPE componentType,
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__in PCWSTR wszName
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)
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{
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HRESULT hr = S_OK;
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bool bResult = false;
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wprintf(L"INFO: AddComponent called\n");
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#pragma warning(suppress: 6387) //To allow NULL in the function call
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CHECK_HR(pMetadata->AddComponent(
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componentType,
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NULL,
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wszName,
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wszName,
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NULL,
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0,
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false,
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false,
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false),
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L"AddComponent failed");
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bResult = true;
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_exit:
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return bResult;
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// AddFilesToFileGroup
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//
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///////////////////////////////////////////////////////////////////////////////
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bool AddFilesToFileGroup(
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__in IVssCreateExpressWriterMetadata *pMetadata,
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__in PCWSTR wszGroupName,
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__in PCWSTR wszPath,
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__in PCWSTR wszFilespec,
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__in bool bRecursive,
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__in DWORD dwBackupTypeMask
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)
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{
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HRESULT hr = S_OK;
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bool bResult = false;
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wprintf(L"INFO: AddFilesToFileGroup called\n");
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#pragma warning(suppress: 6387) //To allow NULL in the function call
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CHECK_HR(pMetadata->AddFilesToFileGroup(
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NULL,
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wszGroupName,
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wszPath,
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wszFilespec,
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bRecursive,
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NULL,
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dwBackupTypeMask),
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L"AddFilesToFileGroup failed");
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bResult = true;
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_exit:
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return bResult;
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// SaveToFile
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//
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///////////////////////////////////////////////////////////////////////////////
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bool SaveToFile(
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__in PCWSTR wszData,
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__in PCWSTR wszFileName
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)
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{
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bool bResult = false;
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HANDLE hFile = INVALID_HANDLE_VALUE;
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DWORD cbWritten = 0;
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wprintf(L"INFO: SaveToFile called\n");
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hFile = CreateFile(
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wszFileName, // file to open
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GENERIC_WRITE, // open for writing
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0, // share for reading
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NULL, // default security
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CREATE_ALWAYS, // always create
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FILE_ATTRIBUTE_NORMAL, // normal file
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NULL); // no attr. template
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CHECK_CONDITION(
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hFile != INVALID_HANDLE_VALUE,
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L"CreateFile failed with %lld",
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(LONGLONG)GetLastError());
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CHECK_CONDITION(
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WriteFile(hFile, wszData, (DWORD)(wcslen(wszData) * sizeof(WCHAR)), &cbWritten, NULL),
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L"WriteFile failed with %lld",
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(LONGLONG)GetLastError());
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bResult = true;
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_exit:
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if (hFile != INVALID_HANDLE_VALUE)
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{
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CloseHandle(hFile);
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}
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return bResult;
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}
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bool SaveToFile(
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__in IVssCreateExpressWriterMetadata *pMetadata,
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__in PCWSTR wszFileName
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)
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{
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HRESULT hr = S_OK;
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bool bResult = false;
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CComBSTR bstr;
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CHECK_HR(pMetadata->SaveAsXML(&bstr), L"SaveAsXML failed");
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CHECK_CONDITION(SaveToFile(PWSTR(bstr), wszFileName), L"SaveToFile failed\n");
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bResult = true;
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_exit:
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return bResult;
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// ConstructWriterDefinition
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//
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///////////////////////////////////////////////////////////////////////////////
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bool ConstructWriterDefinition(
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__in IVssCreateExpressWriterMetadata *pMetadata
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)
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{
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HRESULT hr = S_OK;
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bool bResult = false;
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PCWSTR wszComponent = L"SampleComponent";
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wprintf(L"INFO: ConstructWriterDefinition called\n");
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//
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// Select restore method
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//
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wprintf(L"INFO: Selecting restore method...\n");
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CHECK_CONDITION(
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SetRestoreMethod(
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pMetadata,
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VSS_RME_RESTORE_IF_CAN_REPLACE, // VSS_RESTOREMETHOD_ENUM
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NULL, // Service name, if method is VSS_RME_STOP_RESTORE_RESTART
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false), // Reboot required
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L"SetRestoreMethod failed");
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//
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// Add components and files
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//
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wprintf(L"INFO: Adding basic component...\n");
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CHECK_CONDITION(
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AddComponent(
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pMetadata,
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VSS_CT_FILEGROUP, // VSS_COMPONENT_TYPE
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wszComponent), // Component name
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L"AddComponent failed");
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CHECK_CONDITION(
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AddFilesToFileGroup(
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pMetadata,
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wszComponent, // Component name
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L"c:\\xwdata", // Directory covered
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L"*.*", // Files covered
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true, // Recursive
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VSS_FSBT_ALL_SNAPSHOT_REQUIRED |
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VSS_FSBT_FULL_BACKUP_REQUIRED), // Backup type mask
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L"AddFilesToFileGroup failed");
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bResult = true;
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_exit:
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return bResult;
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}
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