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 5*d4188195Sraf * Common Development and Distribution License (the "License"). 6*d4188195Sraf * 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 */ 21*d4188195Sraf 227c478bd9Sstevel@tonic-gate /* 23*d4188195Sraf * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 245d54f3d8Smuffin * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 277c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 287c478bd9Sstevel@tonic-gate 297c478bd9Sstevel@tonic-gate #include <sys/types.h> 307c478bd9Sstevel@tonic-gate #include <sys/syscall.h> 315d54f3d8Smuffin #include <errno.h> 327c478bd9Sstevel@tonic-gate 337c478bd9Sstevel@tonic-gate #define CHKNULL(p) \ 347c478bd9Sstevel@tonic-gate if ((p) == (char *)0 || (p) == (char *)-1) { \ 357c478bd9Sstevel@tonic-gate errno = EFAULT; \ 367c478bd9Sstevel@tonic-gate return (-1); \ 377c478bd9Sstevel@tonic-gate } else if (*(p) == 0) { \ 387c478bd9Sstevel@tonic-gate p = "."; \ 397c478bd9Sstevel@tonic-gate } 40