// Check the status for all selected writers
BOOL VSSClientGeneric::CheckWriterStatus()
{
/*
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vss/base/ivssbackupcomponents_startsnapshotset.asp
*/
IVssBackupComponents* pVss = (IVssBackupComponents*) m_pVssObject;
DestroyWriterInfo();
// Gather writer status to detect potential errors
CComPtr<IVssAsync> pAsync;
HRESULT hr = pVss->GatherWriterStatus(&pAsync.p);
if (FAILED(hr)) {
errno = b_errno_win32;
return FALSE;
}
// Waits for the async operation to finish and checks the result
WaitAndCheckForAsyncOperation(pAsync.p);
unsigned cWriters = 0;
hr = pVss->GetWriterStatusCount(&cWriters);
if (FAILED(hr)) {
errno = b_errno_win32;
return FALSE;
}
int nState;
// Enumerate each writer
for (unsigned iWriter = 0; iWriter < cWriters; iWriter++) {
VSS_ID idInstance = GUID_NULL;
VSS_ID idWriter= GUID_NULL;
VSS_WRITER_STATE eWriterStatus = VSS_WS_UNKNOWN;
CComBSTR bstrWriterName;
HRESULT hrWriterFailure = S_OK;
// Get writer status
hr = pVss->GetWriterStatus(iWriter,
&idInstance,
&idWriter,
&bstrWriterName,
&eWriterStatus,
&hrWriterFailure);
if (FAILED(hr)) {
/* unknown */
nState = 0;
}
else {
switch(eWriterStatus) {
case VSS_WS_FAILED_AT_IDENTIFY:
case VSS_WS_FAILED_AT_PREPARE_BACKUP:
case VSS_WS_FAILED_AT_PREPARE_SNAPSHOT:
case VSS_WS_FAILED_AT_FREEZE:
case VSS_WS_FAILED_AT_THAW:
case VSS_WS_FAILED_AT_POST_SNAPSHOT:
case VSS_WS_FAILED_AT_BACKUP_COMPLETE:
case VSS_WS_FAILED_AT_PRE_RESTORE:
case VSS_WS_FAILED_AT_POST_RESTORE:
#if defined(B_VSS_W2K3) || defined(B_VSS_VISTA)
case VSS_WS_FAILED_AT_BACKUPSHUTDOWN:
#endif
/* failed */
nState = -1;
break;
default:
/* ok */
nState = 1;
}
}
/* store text info */
char str[1000];
char szBuf1[200];
char szBuf2[200];
char szBuf3[200];
wchar_2_UTF8(szBuf1, bstrWriterName.p, sizeof(szBuf1));
itoa(eWriterStatus, szBuf2, sizeof(szBuf2));
wchar_2_UTF8(szBuf3, GetStringFromWriterStatus(eWriterStatus), sizeof(szBuf3));
snprintf(str, sizeof(str), "\"%s\", State: 0x%s (%s)",
szBuf1, szBuf2, szBuf3);
AppendWriterInfo(nState, (const char *)str);
}
hr = pVss->FreeWriterStatus();
if (FAILED(hr)) {
errno = b_errno_win32;
return FALSE;
}
errno = 0;
return TRUE;
}
// Check the status for all selected writers
bool VSSClientGeneric::CheckWriterStatus()
{
/*
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vss/base/ivssbackupcomponents_startsnapshotset.asp
*/
IVssBackupComponents* pVssObj = (IVssBackupComponents*)m_pVssObject;
if (!pVssObj) {
Jmsg(m_jcr, M_FATAL, 0, "Cannot get IVssBackupComponents pointer.\n");
errno = ENOSYS;
return false;
}
DestroyWriterInfo();
if (m_bWriterStatusCurrent) {
m_bWriterStatusCurrent = false;
pVssObj->FreeWriterStatus();
}
// Gather writer status to detect potential errors
CComPtr<IVssAsync> pAsync;
HRESULT hr = pVssObj->GatherWriterStatus(&pAsync.p);
if (FAILED(hr)) {
JmsgVssApiStatus(m_jcr, M_FATAL, hr, "GatherWriterStatus");
errno = b_errno_win32;
return false;
}
// Waits for the async operation to finish and checks the result
if (!WaitAndCheckForAsyncOperation(pAsync.p)) {
errno = b_errno_win32;
return false;
}
m_bWriterStatusCurrent = true;
unsigned cWriters = 0;
hr = pVssObj->GetWriterStatusCount(&cWriters);
if (FAILED(hr)) {
JmsgVssApiStatus(m_jcr, M_FATAL, hr, "GatherWriterStatusCount");
errno = b_errno_win32;
return false;
}
int nState;
POOLMEM *szBuf = get_pool_memory(PM_FNAME);
// Enumerate each writer
for (unsigned iWriter = 0; iWriter < cWriters; iWriter++) {
VSS_ID idInstance = GUID_NULL;
VSS_ID idWriter= GUID_NULL;
VSS_WRITER_STATE eWriterStatus = VSS_WS_UNKNOWN;
CComBSTR bstrWriterName;
HRESULT hrWriterFailure = S_OK;
// Get writer status
hr = pVssObj->GetWriterStatus(iWriter,
&idInstance,
&idWriter,
&bstrWriterName,
&eWriterStatus,
&hrWriterFailure);
if (FAILED(hr)) {
/* Api failed */
JmsgVssApiStatus(m_jcr, M_WARNING, hr, "GetWriterStatus");
nState = 0; /* Unknown writer state -- API failed */
} else {
switch(eWriterStatus) {
case VSS_WS_FAILED_AT_IDENTIFY:
case VSS_WS_FAILED_AT_PREPARE_BACKUP:
case VSS_WS_FAILED_AT_PREPARE_SNAPSHOT:
case VSS_WS_FAILED_AT_FREEZE:
case VSS_WS_FAILED_AT_THAW:
case VSS_WS_FAILED_AT_POST_SNAPSHOT:
case VSS_WS_FAILED_AT_BACKUP_COMPLETE:
case VSS_WS_FAILED_AT_PRE_RESTORE:
case VSS_WS_FAILED_AT_POST_RESTORE:
#if defined(B_VSS_W2K3) || defined(B_VSS_VISTA)
case VSS_WS_FAILED_AT_BACKUPSHUTDOWN:
#endif
/* Writer status problem */
wchar_2_UTF8(&szBuf, bstrWriterName.p);
JmsgVssWriterStatus(m_jcr, M_WARNING, eWriterStatus, szBuf);
nState = -1; /* bad writer state */
break;
default:
/* ok */
nState = 1; /* Writer state OK */
}
}
/* store text info */
char str[1000];
bstrncpy(str, "\"", sizeof(str));
wchar_2_UTF8(&szBuf, bstrWriterName.p);
bstrncat(str, szBuf, sizeof(str));
bstrncat(str, "\", State: 0x", sizeof(str));
itoa(eWriterStatus, szBuf, sizeof_pool_memory(szBuf));
bstrncat(str, szBuf, sizeof(str));
bstrncat(str, " (", sizeof(str));
wchar_2_UTF8(&szBuf, GetStringFromWriterStatus(eWriterStatus));
bstrncat(str, szBuf, sizeof(str));
bstrncat(str, ")", sizeof(str));
AppendWriterInfo(nState, (const char *)str);
}
free_pool_memory(szBuf);
errno = 0;
return true;
}