/* Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.   This file is part of the GNU C Library.   The GNU C Library is free software; you can redistribute it and/or   modify it under the terms of the GNU Lesser General Public   License as published by the Free Software Foundation; either   version 2.1 of the License, or (at your option) any later version.   The GNU C Library is distributed in the hope that it will be useful,   but WITHOUT ANY WARRANTY; without even the implied warranty of   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU   Lesser General Public License for more details.   You should have received a copy of the GNU Lesser General Public   License along with the GNU C Library; if not, write to the Free   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA   02111-1307 USA.  */#include <stddef.h>#include <errno.h>#include <unistd.h>#include <hurd.h>/* Return the login name of the user, or NULL if it can't be determined.   The returned pointer, if not NULL, is good only until the next call.  */char *getlogin (){  static char login[1024];	/* XXX */  error_t err;  if (err = __USEPORT (PROC, __proc_getlogin (port, login)))    {      errno = err;      return NULL;    }  return login;}