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 307257d1b4Sraf #pragma ident "%Z%%M% %I% %E% SMI" 317c478bd9Sstevel@tonic-gate 327c478bd9Sstevel@tonic-gate /* 337c478bd9Sstevel@tonic-gate * execl(name, arg0, arg1, ..., argn, 0) 347c478bd9Sstevel@tonic-gate * environment automatically passed. 357c478bd9Sstevel@tonic-gate */ 367c478bd9Sstevel@tonic-gate 377257d1b4Sraf #pragma weak _execl = execl 387c478bd9Sstevel@tonic-gate 397257d1b4Sraf #include "lint.h" 407c478bd9Sstevel@tonic-gate #include <alloca.h> 417c478bd9Sstevel@tonic-gate #include <malloc.h> 427c478bd9Sstevel@tonic-gate #include <stdarg.h> 437c478bd9Sstevel@tonic-gate #include <sys/types.h> 447c478bd9Sstevel@tonic-gate #include <unistd.h> 457c478bd9Sstevel@tonic-gate 467c478bd9Sstevel@tonic-gate /*VARARGS1*/ 477c478bd9Sstevel@tonic-gate int 487c478bd9Sstevel@tonic-gate execl(const char *name, const char *arg0, ...) 497c478bd9Sstevel@tonic-gate { 507c478bd9Sstevel@tonic-gate char **argp; 517c478bd9Sstevel@tonic-gate va_list args; 527c478bd9Sstevel@tonic-gate char **argvec; 53*59f081edSraf extern char **_environ; 547c478bd9Sstevel@tonic-gate int err; 557c478bd9Sstevel@tonic-gate int nargs = 0; 567c478bd9Sstevel@tonic-gate char *nextarg; 577c478bd9Sstevel@tonic-gate 587c478bd9Sstevel@tonic-gate /* 597c478bd9Sstevel@tonic-gate * count the number of arguments in the variable argument list 607c478bd9Sstevel@tonic-gate * and allocate an argument vector for them on the stack, 617c478bd9Sstevel@tonic-gate * adding an extra element for a terminating null pointer 627c478bd9Sstevel@tonic-gate */ 637c478bd9Sstevel@tonic-gate 647c478bd9Sstevel@tonic-gate va_start(args, arg0); 657c478bd9Sstevel@tonic-gate while (va_arg(args, char *) != (char *)0) { 667c478bd9Sstevel@tonic-gate nargs++; 677c478bd9Sstevel@tonic-gate } 687c478bd9Sstevel@tonic-gate va_end(args); 697c478bd9Sstevel@tonic-gate 707c478bd9Sstevel@tonic-gate /* 717c478bd9Sstevel@tonic-gate * load the arguments in the variable argument list 727c478bd9Sstevel@tonic-gate * into the argument vector and add the terminating null pointer 737c478bd9Sstevel@tonic-gate */ 747c478bd9Sstevel@tonic-gate 757c478bd9Sstevel@tonic-gate va_start(args, arg0); 767c478bd9Sstevel@tonic-gate 777c478bd9Sstevel@tonic-gate /* workaround for bugid 1242839 */ 787c478bd9Sstevel@tonic-gate argvec = (char **)alloca((size_t)((nargs + 2) * sizeof (char *))); 797c478bd9Sstevel@tonic-gate argp = argvec; 807c478bd9Sstevel@tonic-gate *argp++ = (char *)arg0; 817c478bd9Sstevel@tonic-gate while ((nextarg = va_arg(args, char *)) != (char *)0) { 827c478bd9Sstevel@tonic-gate *argp++ = nextarg; 837c478bd9Sstevel@tonic-gate } 847c478bd9Sstevel@tonic-gate va_end(args); 857c478bd9Sstevel@tonic-gate *argp = (char *)0; 867c478bd9Sstevel@tonic-gate 877c478bd9Sstevel@tonic-gate /* 887c478bd9Sstevel@tonic-gate * call execve() 897c478bd9Sstevel@tonic-gate */ 907c478bd9Sstevel@tonic-gate 91*59f081edSraf err = execve(name, argvec, _environ); 927c478bd9Sstevel@tonic-gate return (err); 937c478bd9Sstevel@tonic-gate } 94