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
22*5dbfd19aSTheo Schlossnagle /* Copyright 2013, OmniTI Computer Consulting, Inc. All rights reserved. */
23*5dbfd19aSTheo Schlossnagle
247c478bd9Sstevel@tonic-gate /*
258fd04b83SRoger A. Faulkner * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
267c478bd9Sstevel@tonic-gate * Use is subject to license terms.
277c478bd9Sstevel@tonic-gate */
287c478bd9Sstevel@tonic-gate
297c478bd9Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */
307c478bd9Sstevel@tonic-gate /* All Rights Reserved */
317c478bd9Sstevel@tonic-gate
327257d1b4Sraf #include "lint.h"
337c478bd9Sstevel@tonic-gate #include <sys/types.h>
347c478bd9Sstevel@tonic-gate #include <fcntl.h>
35*5dbfd19aSTheo Schlossnagle #include <errno.h>
367c478bd9Sstevel@tonic-gate
378fd04b83SRoger A. Faulkner #pragma weak _dup = dup
388fd04b83SRoger A. Faulkner int
dup(int fildes)398fd04b83SRoger A. Faulkner dup(int fildes)
408fd04b83SRoger A. Faulkner {
418fd04b83SRoger A. Faulkner return (fcntl(fildes, F_DUPFD, 0));
428fd04b83SRoger A. Faulkner }
438fd04b83SRoger A. Faulkner
448fd04b83SRoger A. Faulkner #pragma weak _dup2 = dup2
457c478bd9Sstevel@tonic-gate int
dup2(int fildes,int fildes2)467c478bd9Sstevel@tonic-gate dup2(int fildes, int fildes2)
477c478bd9Sstevel@tonic-gate {
487c478bd9Sstevel@tonic-gate return (fcntl(fildes, F_DUP2FD, fildes2));
497c478bd9Sstevel@tonic-gate }
50*5dbfd19aSTheo Schlossnagle
51*5dbfd19aSTheo Schlossnagle int
dup3(int fildes,int fildes2,int flags)52*5dbfd19aSTheo Schlossnagle dup3(int fildes, int fildes2, int flags)
53*5dbfd19aSTheo Schlossnagle {
54*5dbfd19aSTheo Schlossnagle /*
55*5dbfd19aSTheo Schlossnagle * The only valid flag is O_CLOEXEC.
56*5dbfd19aSTheo Schlossnagle */
57*5dbfd19aSTheo Schlossnagle if (flags & ~O_CLOEXEC) {
58*5dbfd19aSTheo Schlossnagle errno = EINVAL;
59*5dbfd19aSTheo Schlossnagle return (-1);
60*5dbfd19aSTheo Schlossnagle }
61*5dbfd19aSTheo Schlossnagle
62*5dbfd19aSTheo Schlossnagle /*
63*5dbfd19aSTheo Schlossnagle * This call differs from dup2 such that it is an error when
64*5dbfd19aSTheo Schlossnagle * fildes == fildes2
65*5dbfd19aSTheo Schlossnagle */
66*5dbfd19aSTheo Schlossnagle if (fildes == fildes2) {
67*5dbfd19aSTheo Schlossnagle errno = EINVAL;
68*5dbfd19aSTheo Schlossnagle return (-1);
69*5dbfd19aSTheo Schlossnagle }
70*5dbfd19aSTheo Schlossnagle
71*5dbfd19aSTheo Schlossnagle return (fcntl(fildes, (flags == 0) ? F_DUP2FD : F_DUP2FD_CLOEXEC,
72*5dbfd19aSTheo Schlossnagle fildes2));
73*5dbfd19aSTheo Schlossnagle }
74