NT Security API: SECURITY_DESCRIPTOR.Control, when can I see SE_OWNER_DEFAULTED? - winapi

Question

From Windows NT security API, SE_OWNER_DEFAULTED is a flag bit from SECURITY_DESCRIPTOR_CONTROL.
MSDN states it quite briefly:
(SE_OWNER_DEFAULTED) Indicates that the SID of the owner of the security descriptor was provided by a default mechanism. This flag can be used by a resource manager to identify objects whose owner was set by a default mechanism.
I'm curious that when I can see this flag set.
I write NtfsOwner.cpp to display owner SID of an NTFS file/directory's security descriptor, and use GetSecurityDescriptorOwner to query that SE_OWNER_DEFAULTED flag, but have no chance seeing it even once.
Could somebody give me some clue. Could it be possible that SE_OWNER_DEFAULTED exhibits on other type of NT objects(not on a file/directory)?
#include <Windows.h>
#include <AclAPI.h>
#include <sddl.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <tchar.h>
#include <locale.h>
template<typename T1, typename T2>
bool IsSameBool(T1 a, T2 b)
{
if(a && b)
return true;
else if(!a && !b)
return true;
else
return false;
}
void myDisplayNtfsOwner(const TCHAR *szfn)
{
DWORD succ = 0;
HANDLE hFile = CreateFile(szfn,
READ_CONTROL, // dwDesiredAccess=GENERIC_READ etc
FILE_SHARE_READ|FILE_SHARE_WRITE, // shareMode
NULL, // SecuAttr, no need bcz we are opening existing file
OPEN_EXISTING, // dwCreationDisposition
FILE_FLAG_BACKUP_SEMANTICS, // this is required for open a directory
NULL);
if(hFile==INVALID_HANDLE_VALUE)
{
_tprintf(_T("Warning: CreateFile() failed!(WinErr=%d) But I will go on calling GetSecurityInfo(0xFFFFffff, ...)\n"),
GetLastError());
}
SECURITY_DESCRIPTOR *pSD = nullptr;
DWORD winerr = GetSecurityInfo(hFile, SE_FILE_OBJECT,
OWNER_SECURITY_INFORMATION,
NULL, NULL, NULL, NULL,
(PSECURITY_DESCRIPTOR*)&pSD);
assert(winerr==0);
SID* psidOwner = nullptr;
BOOL isOwnerDefaulted = 0;
succ = GetSecurityDescriptorOwner(pSD, (PSID*)&psidOwner, &isOwnerDefaulted);
assert(succ);
PTSTR strOwner = nullptr;
succ = ConvertSidToStringSid(psidOwner, &strOwner);
assert(succ);
_tprintf(_T("Owner SID is: %s\n"), strOwner);
_tprintf(_T("Is owner SID defaulted? %s\n"), isOwnerDefaulted?_T("yes"):_T("no"));
assert(IsSameBool(pSD->Control & SE_OWNER_DEFAULTED, isOwnerDefaulted));
LocalFree(strOwner);
LocalFree(pSD);
CloseHandle(hFile);
}
int _tmain(int argc, TCHAR* argv[])
{
setlocale(LC_ALL, "");
if(argc==1)
{
const TCHAR *s = _T("D:\\test\\foo.txt");
_tprintf(_T("Missing parameters.\n"));
_tprintf(_T("Example:\n"));
_tprintf(_T(" NtfsOwner1 %s\n"), s);
exit(1);
}
const TCHAR *szfn = argv[1];
myDisplayNtfsOwner(szfn);
return 0;
}