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
57257d1b4Sraf * Common Development and Distribution License (the "License").
67257d1b4Sraf * 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 */
217257d1b4Sraf
227c478bd9Sstevel@tonic-gate /*
237257d1b4Sraf * 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 /* Copyright (c) 1988 AT&T */
287c478bd9Sstevel@tonic-gate /* All Rights Reserved */
297c478bd9Sstevel@tonic-gate
307c478bd9Sstevel@tonic-gate /*
317c478bd9Sstevel@tonic-gate * execl(name, arg0, arg1, ..., argn, 0)
327c478bd9Sstevel@tonic-gate * environment automatically passed.
337c478bd9Sstevel@tonic-gate */
347c478bd9Sstevel@tonic-gate
357257d1b4Sraf #pragma weak _execl = execl
367c478bd9Sstevel@tonic-gate
377257d1b4Sraf #include "lint.h"
387c478bd9Sstevel@tonic-gate #include <alloca.h>
397c478bd9Sstevel@tonic-gate #include <malloc.h>
407c478bd9Sstevel@tonic-gate #include <stdarg.h>
417c478bd9Sstevel@tonic-gate #include <sys/types.h>
427c478bd9Sstevel@tonic-gate #include <unistd.h>
437c478bd9Sstevel@tonic-gate
447c478bd9Sstevel@tonic-gate /*VARARGS1*/
457c478bd9Sstevel@tonic-gate int
execl(const char * name,const char * arg0,...)467c478bd9Sstevel@tonic-gate execl(const char *name, const char *arg0, ...)
477c478bd9Sstevel@tonic-gate {
487c478bd9Sstevel@tonic-gate char **argp;
497c478bd9Sstevel@tonic-gate va_list args;
507c478bd9Sstevel@tonic-gate char **argvec;
51*59f081edSraf extern char **_environ;
527c478bd9Sstevel@tonic-gate int err;
537c478bd9Sstevel@tonic-gate int nargs = 0;
547c478bd9Sstevel@tonic-gate char *nextarg;
557c478bd9Sstevel@tonic-gate
567c478bd9Sstevel@tonic-gate /*
577c478bd9Sstevel@tonic-gate * count the number of arguments in the variable argument list
587c478bd9Sstevel@tonic-gate * and allocate an argument vector for them on the stack,
597c478bd9Sstevel@tonic-gate * adding an extra element for a terminating null pointer
607c478bd9Sstevel@tonic-gate */
617c478bd9Sstevel@tonic-gate
627c478bd9Sstevel@tonic-gate va_start(args, arg0);
637c478bd9Sstevel@tonic-gate while (va_arg(args, char *) != (char *)0) {
647c478bd9Sstevel@tonic-gate nargs++;
657c478bd9Sstevel@tonic-gate }
667c478bd9Sstevel@tonic-gate va_end(args);
677c478bd9Sstevel@tonic-gate
687c478bd9Sstevel@tonic-gate /*
697c478bd9Sstevel@tonic-gate * load the arguments in the variable argument list
707c478bd9Sstevel@tonic-gate * into the argument vector and add the terminating null pointer
717c478bd9Sstevel@tonic-gate */
727c478bd9Sstevel@tonic-gate
737c478bd9Sstevel@tonic-gate va_start(args, arg0);
747c478bd9Sstevel@tonic-gate
757c478bd9Sstevel@tonic-gate /* workaround for bugid 1242839 */
767c478bd9Sstevel@tonic-gate argvec = (char **)alloca((size_t)((nargs + 2) * sizeof (char *)));
777c478bd9Sstevel@tonic-gate argp = argvec;
787c478bd9Sstevel@tonic-gate *argp++ = (char *)arg0;
797c478bd9Sstevel@tonic-gate while ((nextarg = va_arg(args, char *)) != (char *)0) {
807c478bd9Sstevel@tonic-gate *argp++ = nextarg;
817c478bd9Sstevel@tonic-gate }
827c478bd9Sstevel@tonic-gate va_end(args);
837c478bd9Sstevel@tonic-gate *argp = (char *)0;
847c478bd9Sstevel@tonic-gate
857c478bd9Sstevel@tonic-gate /*
867c478bd9Sstevel@tonic-gate * call execve()
877c478bd9Sstevel@tonic-gate */
887c478bd9Sstevel@tonic-gate
89*59f081edSraf err = execve(name, argvec, _environ);
907c478bd9Sstevel@tonic-gate return (err);
917c478bd9Sstevel@tonic-gate }
92