1 /* $NetBSD: execle.c,v 1.2 1996/07/04 07:19:04 jtc Exp $ */ 2 3 /*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #if defined(LIBC_SCCS) && !defined(lint) 37 #if 0 38 static char sccsid[] = "@(#)exec.c 8.1 (Berkeley) 6/4/93"; 39 #else 40 static char rcsid[] = "$NetBSD: execle.c,v 1.2 1996/07/04 07:19:04 jtc Exp $"; 41 #endif 42 #endif /* LIBC_SCCS and not lint */ 43 44 #include <stdlib.h> 45 #include <unistd.h> 46 47 #if __STDC__ 48 #include <stdarg.h> 49 #define VA_START(ap, last) va_start(ap, last) 50 #else 51 #include <varargs.h> 52 #define VA_START(ap, last) va_start(ap) 53 #endif 54 55 int 56 #if __STDC__ 57 execle(const char *name, const char *arg, ...) 58 #else 59 execle(name, arg, va_alist) 60 const char *name; 61 const char *arg; 62 va_dcl 63 #endif 64 { 65 #if defined(__i386__) || defined(__m68k__) || defined(__ns32k__) 66 va_list ap; 67 char **envp; 68 69 VA_START(ap, arg); 70 while ((va_arg(ap, char *)) != NULL) 71 ; 72 envp = va_arg(ap, char **); 73 va_end(ap); 74 75 return execve(name, (char **) &arg, envp); 76 #else 77 va_list ap; 78 char **argv, **envp; 79 int i; 80 81 VA_START(ap, arg); 82 for (i = 1; va_arg(ap, char *) != NULL; i++) 83 ; 84 va_end(ap); 85 86 argv = alloca (i * sizeof (char *)); 87 88 VA_START(ap, arg); 89 argv[0] = (char *) arg; 90 for (i = 1; (argv[i] = (char *) va_arg(ap, char *)) != NULL; i++) 91 ; 92 envp = (char **) va_arg(ap, char **); 93 va_end(ap); 94 95 return execve(name, argv, envp); 96 #endif 97 } 98