// from->f_fsid is an int32[2], to->f_fsid is a uint64,
// so this shouldn't lose anything.
memcpy (&to->f_fsid, &from->f_fsid, sizeof(to->f_fsid));
// from->f_fsid is an int32[2], to->f_fsid is a uint64,
// so this shouldn't lose anything.
memcpy (&to->f_fsid, &from->f_fsid, sizeof(to->f_fsid));