[thirdparty/glibc.git] / io / ttyname.c

/* Copyright (C) 1991-2019 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, see
   <http://www.gnu.org/licenses/>.  */

#include <errno.h>
#include <stddef.h>
#include <unistd.h>


char *__ttyname = NULL;

/* 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)
{
  __set_errno (ENOSYS);
  return NULL;
}


stub_warning (ttyname)
Commit	Line	Data
04277e02	1	/* Copyright (C) 1991-2019 Free Software Foundation, Inc.
478b92f0 UD	2	This file is part of the GNU C Library.
	3
	4	The GNU C Library is free software; you can redistribute it and/or
41bdb6e2 AJ	5	modify it under the terms of the GNU Lesser General Public
	6	License as published by the Free Software Foundation; either
	7	version 2.1 of the License, or (at your option) any later version.
478b92f0 UD	8
	9	The GNU C Library is distributed in the hope that it will be useful,
	10	but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41bdb6e2	12	Lesser General Public License for more details.
478b92f0	13
41bdb6e2	14	You should have received a copy of the GNU Lesser General Public
59ba27a6 PE	15	License along with the GNU C Library; if not, see
59ba27a6 PE	16	<http://www.gnu.org/licenses/>. */
28f540f4	17
28f540f4 RM	18	#include <errno.h>
	19	#include <stddef.h>
	20	#include <unistd.h>
	21
	22
	23	char *__ttyname = NULL;
	24
	25	/* Return the pathname of the terminal FD is open on, or NULL on errors.
	26	The returned storage is good only until the next call to this function. */
	27	char *
9d46370c	28	ttyname (int fd)
28f540f4	29	{
c4029823	30	__set_errno (ENOSYS);
28f540f4 RM	31	return NULL;
	32	}
	33
	34
3f33a4ce	35	stub_warning (ttyname)