xref: /titanic_41/usr/src/lib/libc/port/gen/getexecname.c (revision c5024742c2f7d10880eae26cc592353b20a58f4a)
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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 /*LINTLIBRARY*/
30 
31 #pragma weak getexecname = _getexecname
32 #include "synonyms.h"
33 
34 #include <stdlib.h>
35 #include <unistd.h>
36 #include <sys/types.h>
37 #include <sys/auxv.h>
38 
39 extern void *___getauxptr(int type);
40 
41 /*
42  * Return the pointer to the fully-resolved path name of the process's
43  * executable file obtained from the AT_SUN_EXECNAME aux vector entry.
44  */
45 const char *
46 getexecname(void)
47 {
48 	return ((const char *)___getauxptr(AT_SUN_EXECNAME));
49 }
50