1 /* $NetBSD: execle.c,v 1.3 1997/07/13 19:45:49 christos 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 #include <sys/cdefs.h> 37 #if defined(LIBC_SCCS) && !defined(lint) 38 #if 0 39 static char sccsid[] = "@(#)exec.c 8.1 (Berkeley) 6/4/93"; 40 #else 41 __RCSID("$NetBSD: execle.c,v 1.3 1997/07/13 19:45:49 christos Exp $"); 42 #endif 43 #endif /* LIBC_SCCS and not lint */ 44 45 #include <stdlib.h> 46 #include <unistd.h> 47 48 #if __STDC__ 49 #include <stdarg.h> 50 #define VA_START(ap, last) va_start(ap, last) 51 #else 52 #include <varargs.h> 53 #define VA_START(ap, last) va_start(ap) 54 #endif 55 56 int 57 #if __STDC__ 58 execle(const char *name, const char *arg, ...) 59 #else 60 execle(name, arg, va_alist) 61 const char *name; 62 const char *arg; 63 va_dcl 64 #endif 65 { 66 #if defined(__i386__) || defined(__m68k__) || defined(__ns32k__) 67 va_list ap; 68 char **envp; 69 70 VA_START(ap, arg); 71 while ((va_arg(ap, char *)) != NULL) 72 ; 73 envp = va_arg(ap, char **); 74 va_end(ap); 75 76 return execve(name, (char **) &arg, envp); 77 #else 78 va_list ap; 79 char **argv, **envp; 80 int i; 81 82 VA_START(ap, arg); 83 for (i = 1; va_arg(ap, char *) != NULL; i++) 84 ; 85 va_end(ap); 86 87 argv = alloca (i * sizeof (char *)); 88 89 VA_START(ap, arg); 90 argv[0] = (char *) arg; 91 for (i = 1; (argv[i] = (char *) va_arg(ap, char *)) != NULL; i++) 92 ; 93 envp = (char **) va_arg(ap, char **); 94 va_end(ap); 95 96 return execve(name, argv, envp); 97 #endif 98 } 99