xref: /illumos-gate/usr/src/lib/libc/port/stdio/ctermid.c (revision 1da57d551424de5a9d469760be7c4b4d4f10a755)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1988 AT&T	*/
28 /*	  All Rights Reserved  	*/
29 
30 #pragma weak _ctermid = ctermid
31 
32 #include "lint.h"
33 #include "mtlib.h"
34 #include <stdio.h>
35 #include <string.h>
36 #include <thread.h>
37 #include <synch.h>
38 
39 static const char res[L_ctermid] = "/dev/tty";
40 
41 /*
42  * non-reentrant version in ctermid_r.c
43  */
44 char *
ctermid(char * s)45 ctermid(char *s)
46 {
47 	if (s == NULL)
48 		return ((char *)res);
49 	return (strcpy(s, res));
50 }
51