_X_GNAME
if (xhdr_flgs & _X_GNAME)
xhdr_flgs |= (_X_UNAME | _X_GNAME);
if (xhdr_flgs & _X_GNAME)
_X_GNAME, "gname",
case _X_GNAME:
xhdr_flgs |= _X_GNAME;
dblock.dbuf.gname, iconv_cd, _X_GNAME, _POSIX_NAME_MAX);