ttyname, ttyname_r — return name of a terminal
#include <unistd.h>
char
*ttyname( |
int | fd); |
int
ttyname_r( |
int | fd, |
| char * | buf, | |
| size_t | buflen); |
The function ttyname()
returns a pointer to the null-terminated pathname of the
terminal device that is open on the file descriptor
fd, or NULL on error
(for example, if fd
is not connected to a terminal). The return value may point
to static data, possibly overwritten by the next call. The
function ttyname_r() stores
this pathname in the buffer buf of length buflen.
The function ttyname()
returns a pointer to a pathname on success. On error, NULL is
returned, and errno is set
appropriately. The function ttyname_r() returns 0 on success, and an
error number upon error.
Values stored in errno by a
failing ttyname() or returned
by a failing ttyname_r():
Bad file descriptor.
File descriptor does not refer to a terminal device.
buflen was
too small to allow storing the pathname.
This page is part of release 2.79 of the Linux man-pages project. A
description of the project, and information about reporting
bugs, can be found at
http://www.kernel.org/doc/man-pages/.
|
Copyright (c) 1995 Jim Van Zandt <jrvvanzandt.mv.com> This is free documentation; you can redistribute it and/or modify it under the terms of the GNU 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 General Public License's references to "object code" and "executables" are to be interpreted as the output of any document formatting or typesetting system, including intermediate and printed output. This manual 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this manual; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. Modified 2001-12-13, Martin Schulze <joeyinfodrom.org> Added ttyname_r, aeb, 2002-07-20 |