xref: /titanic_41/usr/src/lib/libc/port/gen/setlabel.c (revision b3697b90e692e3e5d859fb77d285d4c056d99eda)
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 ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #pragma	weak _setlabel = setlabel
33 
34 #include "lint.h"
35 #include "mtlib.h"
36 #include <pfmt.h>
37 #include <thread.h>
38 #include <string.h>
39 #include "pfmt_data.h"
40 
41 int
42 setlabel(const char *label)
43 {
44 	lrw_wrlock(&_rw_pfmt_label);
45 	if (!label)
46 		__pfmt_label[0] = '\0';
47 	else {
48 		(void) strncpy(__pfmt_label, label, sizeof (__pfmt_label) - 1);
49 		__pfmt_label[sizeof (__pfmt_label) - 1] = '\0';
50 	}
51 	lrw_unlock(&_rw_pfmt_label);
52 	return (0);
53 }
54