// Query all the shadow copies in the given set
void VSSClientGeneric::QuerySnapshotSet(GUID snapshotSetID)
{
if (!(p_CreateVssBackupComponents && p_VssFreeSnapshotProperties)) {
Jmsg(m_jcr, M_FATAL, 0, "CreateVssBackupComponents or VssFreeSnapshotProperties API is NULL.\n");
errno = ENOSYS;
return;
}
memset(m_szShadowCopyName,0,sizeof (m_szShadowCopyName));
if (snapshotSetID == GUID_NULL || m_pVssObject == NULL) {
Jmsg(m_jcr, M_FATAL, 0, "snapshotSetID == NULL or VssObject is NULL.\n");
errno = ENOSYS;
return;
}
IVssBackupComponents* pVssObj = (IVssBackupComponents*) m_pVssObject;
// Get list all shadow copies.
CComPtr<IVssEnumObject> pIEnumSnapshots;
HRESULT hr = pVssObj->Query( GUID_NULL,
VSS_OBJECT_NONE,
VSS_OBJECT_SNAPSHOT,
(IVssEnumObject**)(&pIEnumSnapshots) );
// If there are no shadow copies, just return
if (FAILED(hr)) {
Jmsg(m_jcr, M_FATAL, 0, "No Volume Shadow copies made.\n");
errno = b_errno_win32;
return;
}
// Enumerate all shadow copies.
VSS_OBJECT_PROP Prop;
VSS_SNAPSHOT_PROP& Snap = Prop.Obj.Snap;
while (true) {
// Get the next element
ULONG ulFetched;
hr = (pIEnumSnapshots.p)->Next( 1, &Prop, &ulFetched );
// We reached the end of list
if (ulFetched == 0)
break;
// Print the shadow copy (if not filtered out)
if (Snap.m_SnapshotSetId == snapshotSetID) {
for (int ch='A'-'A';ch<='Z'-'A';ch++) {
if (wcscmp(Snap.m_pwszOriginalVolumeName, m_wszUniqueVolumeName[ch]) == 0) {
wcsncpy(m_szShadowCopyName[ch],Snap.m_pwszSnapshotDeviceObject, MAX_PATH-1);
break;
}
}
}
p_VssFreeSnapshotProperties(&Snap);
}
errno = 0;
}
