Back to index

glibc  2.9
ttyname.c
Go to the documentation of this file.
00001 /* Copyright (C) 1994, 1997 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <errno.h>
00020 #include <unistd.h>
00021 #include <hurd.h>
00022 #include <hurd/term.h>
00023 #include <hurd/fd.h>
00024 
00025 /* Return the pathname of the terminal FD is open on, or NULL on errors.
00026    The returned storage is good only until the next call to this function.  */
00027 char *
00028 ttyname (int fd)
00029 {
00030   error_t err;
00031   static char nodename[1024];      /* XXX */
00032 
00033   nodename[0] = '\0';
00034   if (err = HURD_DPORT_USE (fd, __term_get_nodename (port, nodename)))
00035     return __hurd_dfail (fd, err), NULL;
00036 
00037   return nodename;
00038 }