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HRESULT GetMachineName(
  wchar_t *pwszPath,
  wchar_t wszMachineName[MAX_COMPUTERNAME_LENGTH_FQDN+1])
{
  wchar_t *pwszServerName = wszMachineName;
  wchar_t *pwszTemp = pwszPath + 2;
  wchar_t *end_addr
    = pwszServerName + MAX_COMPUTERNAME_LENGTH_FQDN;
  while ( (*pwszTemp != L'\\')
      &&  ((*pwszTemp != L'\0'))
      && (pwszServerName < end_addr) )
  {
    *pwszServerName++ = *pwszTemp++;
  }

  /* ... */
}