text: /*	$NetBSD: execl.c,v 1.17 2011/06/30 19:46:07 joerg Exp $	*/
  
  /*-
   * Copyright (c) 1991, 1993
   *	The Regents of the University of California.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  #include <sys/cdefs.h>
  #if defined(LIBC_SCCS) && !defined(lint)
  #if 0
  static char sccsid[] = "@(#)exec.c	8.1 (Berkeley) 6/4/93";
  #else
  __RCSID("$NetBSD: execl.c,v 1.17 2011/06/30 19:46:07 joerg Exp $");
  #endif
  #endif /* LIBC_SCCS and not lint */
  
  #include "namespace.h"
  #include <errno.h>
  #include <stdarg.h>
  #include <stdlib.h>
  #include <unistd.h>
  #include "reentrant.h"
  
  #ifdef __weak_alias
  __weak_alias(execl,_execl)
  #endif
  
  
  extern char **environ;
  
  int
  execl(const char *name, const char *arg, ...)
  {
  	int r;
  	va_list ap;
  	char **argv;
  	int i;
  
  	va_start(ap, arg);
  	for (i = 2; va_arg(ap, char *) != NULL; i++)
  		continue;
  	va_end(ap);
  
  	if ((argv = alloca(i * sizeof (char *))) == NULL) {
  		errno = ENOMEM;
  		return -1;
  	}
  	
  	va_start(ap, arg);
  	argv[0] = __UNCONST(arg);
  	for (i = 1; (argv[i] = va_arg(ap, char *)) != NULL; i++) 
  		continue;
  	va_end(ap);
  	
  	r = execve(name, argv, environ);
  	return r;
  }
  