Wall-clock time (seconds + nanoseconds). RFC 1813 §2.5.
NFS expects POSIX ctime semantics for fattr3.ctime — that is
a metadata-change time, not a file-creation time.
Summary
Types
@type t() :: %Tahr.NFSv3.Types.Nfstime3{ nseconds: non_neg_integer(), seconds: non_neg_integer() }