尝试运行卷影复制时"procedure entry not found in vssapi.dll"出现运行时错误
Getting a runtime error "procedure entry not found in vssapi.dll" when trying to run Volume Shadow Copy
代码编译良好,我已将vssapi.lib包含在链接器的附加依赖项中。
我收到这个错误,说"在vssapi.dll中找不到CreatevssbackupcomponentsInternal过程入口点"
只有当我尝试在Windows服务器2003或Windows XP上运行它时,才会出现这个错误。它在Windows7上运行良好。
我将在下面附上代码,这是标准的影子复制代码。
// copy.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <iostream>
#include <windows.h>
#include <winbase.h>
#include <vss.h>
#include <VsWriter.h>
#include <VsBackup.h>
int main()
{
int retCode = 0;
int i=0;
HRESULT hr;
IVssEnumObject *pIEnumSnapshots;
IVssBackupComponents *ab;
IVssAsync *pPrepareForBackupResults;
GUID SnapshotSetID = GUID_NULL;
VSS_OBJECT_PROP Prop;
WCHAR wszVolumePathName[MAX_PATH];
GUID snapshotID;
wcscpy(wszVolumePathName, L"E:\");
VSS_SNAPSHOT_PROP snapshotProperties;
WCHAR existingFilePath[MAX_PATH] = TEXT("\temp\");
WCHAR newFileLocation[MAX_PATH] = TEXT("c:\Users\");
LPWCH pwszExposed;
int *x;
LONG deletedsnapshots = 0 ;
GUID nondeletedsnapshots;
TCHAR existingFileLocation[MAX_PATH];
if (CoInitialize(NULL) != S_OK)
{
printf("CoInitialize failed!n");
return 1;
}
hr = CreateVssBackupComponents(&ab);
if(hr != S_OK)
{
printf("Failed at CreateVssBackupComponents Stage");
return 1;
}
hr = ab->InitializeForBackup();
if(hr != S_OK)
{
printf("Failed at InitializeForBackup Stage");
std::cout<<hr;
return 1;
}
hr = ab->SetContext( VSS_CTX_FILE_SHARE_BACKUP);
hr = ab->StartSnapshotSet(&SnapshotSetID);
if(hr != S_OK)
{
printf("Failed at StartSnapshotset Stage");
return 1;
}
hr = ab->AddToSnapshotSet(wszVolumePathName, GUID_NULL, &snapshotID);
if(hr != S_OK)
{
printf("Failed at AddtoSnapshotset Stage");
return 1;
}
hr = ab->PrepareForBackup(&pPrepareForBackupResults);
if(hr != S_OK)
{
printf("Failed at Backup");
}
hr = ab->DoSnapshotSet(&pPrepareForBackupResults);
if(hr != S_OK)
{
printf("Failed at DoSnapshotset Stage");
return 1;
}
while(true){
pPrepareForBackupResults->QueryStatus(&hr, NULL);
if(hr == VSS_S_ASYNC_FINISHED){
break;
}
}
hr = ab->GetSnapshotProperties(snapshotID, &snapshotProperties);
if(hr != S_OK)
{
printf("Failed at GetSnapshotset Stage");
return 1;
}
hr = ab->ExposeSnapshot(snapshotID, NULL, VSS_VOLSNAP_ATTR_EXPOSED_LOCALLY, L"C:ShadowOff", &pwszExposed);
wcscpy(existingFilePath,snapshotProperties.m_pwszOriginalVolumeName);
wcscat(existingFilePath, L"downloads\aa.exe");
HANDLE hSourceFile = CreateFile(existingFilePath, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0);
hr = ab->DeleteSnapshots(SnapshotSetID, VSS_OBJECT_SNAPSHOT_SET ,FALSE, &deletedsnapshots, &nondeletedsnapshots);
if(hr != S_OK)
{
printf("Failed at DeleteSnapshotset Stage");
return 1;
}
return retCode;
}
您必须使用Windows Vista之前的Windows版本的Windows卷影复制SDK:http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=23490
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