xref: /titanic_41/usr/src/lib/libc/port/gen/getexecname.c (revision 7257d1b4d25bfac0c802847390e98a464fd787ac)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7257d1b4Sraf  * Common Development and Distribution License (the "License").
6*7257d1b4Sraf  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
21*7257d1b4Sraf 
227c478bd9Sstevel@tonic-gate /*
23*7257d1b4Sraf  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
247c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate  */
267c478bd9Sstevel@tonic-gate 
277c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
287c478bd9Sstevel@tonic-gate 
29*7257d1b4Sraf #pragma weak _getexecname = getexecname
307c478bd9Sstevel@tonic-gate 
31*7257d1b4Sraf #include "lint.h"
327c478bd9Sstevel@tonic-gate #include <stdlib.h>
337c478bd9Sstevel@tonic-gate #include <unistd.h>
347c478bd9Sstevel@tonic-gate #include <sys/types.h>
357c478bd9Sstevel@tonic-gate #include <sys/auxv.h>
367c478bd9Sstevel@tonic-gate 
377c478bd9Sstevel@tonic-gate extern void *___getauxptr(int type);
387c478bd9Sstevel@tonic-gate 
397c478bd9Sstevel@tonic-gate /*
407c478bd9Sstevel@tonic-gate  * Return the pointer to the fully-resolved path name of the process's
417c478bd9Sstevel@tonic-gate  * executable file obtained from the AT_SUN_EXECNAME aux vector entry.
427c478bd9Sstevel@tonic-gate  */
437c478bd9Sstevel@tonic-gate const char *
getexecname(void)447c478bd9Sstevel@tonic-gate getexecname(void)
457c478bd9Sstevel@tonic-gate {
467c478bd9Sstevel@tonic-gate 	return ((const char *)___getauxptr(AT_SUN_EXECNAME));
477c478bd9Sstevel@tonic-gate }
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