1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* Copyright (c) 1988 AT&T */ 30 /* All Rights Reserved */ 31 32 33 /* 34 * execle(file, arg1, arg2, ..., 0, envp) 35 */ 36 37 #pragma weak execle = _execle 38 39 #include "synonyms.h" 40 #include <sys/types.h> 41 #include <alloca.h> 42 #include <malloc.h> 43 #include <stdarg.h> 44 #include <unistd.h> 45 46 /*VARARGS1*/ 47 int 48 execle(const char *file, const char *arg0, ...) 49 { 50 char **argp; 51 va_list args; 52 char **argvec; 53 register char **environmentp; 54 int err; 55 int nargs = 0; 56 char *nextarg; 57 58 /* 59 * count the number of arguments in the variable argument list 60 * and allocate an argument vector for them on the stack, 61 * adding space at the end for a terminating null pointer 62 */ 63 64 va_start(args, arg0); 65 while (va_arg(args, char *) != (char *)0) { 66 nargs++; 67 } 68 69 /* 70 * save the environment pointer, which is at the end of the 71 * variable argument list 72 */ 73 74 environmentp = va_arg(args, char **); 75 va_end(args); 76 77 /* 78 * load the arguments in the variable argument list 79 * into the argument vector, and add the terminating null pointer 80 */ 81 82 va_start(args, arg0); 83 /* workaround for bugid 1242839 */ 84 argvec = (char **)alloca((size_t)((nargs + 2) * sizeof (char *))); 85 argp = argvec; 86 *argp++ = (char *)arg0; 87 while ((nextarg = va_arg(args, char *)) != (char *)0) { 88 *argp++ = nextarg; 89 } 90 va_end(args); 91 *argp = (char *)0; 92 93 /* 94 * call execve() 95 */ 96 97 err = execve(file, argvec, environmentp); 98 return (err); 99 } 100