167560dcfSJilles Tjoelker /*- 2*4d846d26SWarner Losh * SPDX-License-Identifier: BSD-2-Clause 3d915a14eSPedro F. Giffuni * 467560dcfSJilles Tjoelker * Copyright (c) 2012 Jukka A. Ukkonen 567560dcfSJilles Tjoelker * All rights reserved. 667560dcfSJilles Tjoelker * 767560dcfSJilles Tjoelker * This software was developed by Jukka Ukkonen for FreeBSD. 867560dcfSJilles Tjoelker * 967560dcfSJilles Tjoelker * Redistribution and use in source and binary forms, with or without 1067560dcfSJilles Tjoelker * modification, are permitted provided that the following conditions 1167560dcfSJilles Tjoelker * are met: 1267560dcfSJilles Tjoelker * 1. Redistributions of source code must retain the above copyright 1367560dcfSJilles Tjoelker * notice, this list of conditions and the following disclaimer. 1467560dcfSJilles Tjoelker * 2. Redistributions in binary form must reproduce the above copyright 1567560dcfSJilles Tjoelker * notice, this list of conditions and the following disclaimer in the 1667560dcfSJilles Tjoelker * documentation and/or other materials provided with the distribution. 1767560dcfSJilles Tjoelker * 1867560dcfSJilles Tjoelker * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1967560dcfSJilles Tjoelker * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2067560dcfSJilles Tjoelker * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2167560dcfSJilles Tjoelker * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2267560dcfSJilles Tjoelker * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2367560dcfSJilles Tjoelker * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2467560dcfSJilles Tjoelker * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2567560dcfSJilles Tjoelker * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2667560dcfSJilles Tjoelker * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2767560dcfSJilles Tjoelker * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2867560dcfSJilles Tjoelker * SUCH DAMAGE. 2967560dcfSJilles Tjoelker */ 3067560dcfSJilles Tjoelker 3167560dcfSJilles Tjoelker #include "namespace.h" 3267560dcfSJilles Tjoelker #include <unistd.h> 3367560dcfSJilles Tjoelker #include <fcntl.h> 3467560dcfSJilles Tjoelker #include <errno.h> 3567560dcfSJilles Tjoelker #include "un-namespace.h" 3667560dcfSJilles Tjoelker 37d5bf9eb5SCraig Rodrigues int __dup3(int, int, int); 38e0b54d01SCraig Rodrigues 3967560dcfSJilles Tjoelker int 4067560dcfSJilles Tjoelker __dup3(int oldfd, int newfd, int flags) 4167560dcfSJilles Tjoelker { 4267560dcfSJilles Tjoelker int how; 4367560dcfSJilles Tjoelker 4467560dcfSJilles Tjoelker if (oldfd == newfd) { 4567560dcfSJilles Tjoelker errno = EINVAL; 4667560dcfSJilles Tjoelker return (-1); 4767560dcfSJilles Tjoelker } 4867560dcfSJilles Tjoelker 4967560dcfSJilles Tjoelker if (flags & ~O_CLOEXEC) { 5067560dcfSJilles Tjoelker errno = EINVAL; 5167560dcfSJilles Tjoelker return (-1); 5267560dcfSJilles Tjoelker } 5367560dcfSJilles Tjoelker 5467560dcfSJilles Tjoelker how = (flags & O_CLOEXEC) ? F_DUP2FD_CLOEXEC : F_DUP2FD; 5567560dcfSJilles Tjoelker 5667560dcfSJilles Tjoelker return (_fcntl(oldfd, how, newfd)); 5767560dcfSJilles Tjoelker } 5867560dcfSJilles Tjoelker 5967560dcfSJilles Tjoelker __weak_reference(__dup3, dup3); 6067560dcfSJilles Tjoelker __weak_reference(__dup3, _dup3); 61