ttyname.c

来自「一个C源代码分析器」· C语言 代码 · 共 39 行

/* Copyright (C) 1994 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB.  If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA.  */

#include <errno.h>
#include <unistd.h>
#include <hurd.h>
#include <hurd/term.h>
#include <hurd/fd.h>

/* Return the pathname of the terminal FD is open on, or NULL on errors.
   The returned storage is good only until the next call to this function.  */
char *
ttyname (int fd)
{
  error_t err;
  static char nodename[1024];	/* XXX */

  nodename[0] = '\0';
  if (err = HURD_DPORT_USE (fd, __term_get_nodename (port, nodename)))
    return __hurd_dfail (fd, err), NULL;

  return nodename;
}