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/* $Id: nocrt-dup.cpp $ */
/** @file
* IPRT - No-CRT - dup().
*/
/*
* Copyright (C) 2022-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#define IPRT_NO_CRT_FOR_3RD_PARTY
#include "internal/nocrt.h"
#include <iprt/nocrt/unistd.h>
#include <iprt/nocrt/errno.h>
#include <iprt/assert.h>
#include <iprt/errcore.h>
#include <iprt/file.h>
#undef dup
int RT_NOCRT(dup)(int fdSrc)
{
RTFILE hFileSrc;
int rc = RTFileFromNative(&hFileSrc, fdSrc);
if (RT_SUCCESS(rc))
{
RTFILE hFileNew;
#if defined(RT_OS_WINDOWS) /* default on windows is noinherit */
rc = RTFileDup(hFileSrc, 0, &hFileNew);
#else
rc = RTFileDup(hFileSrc, RTFILE_O_INHERIT, &hFileNew);
#endif
if (RT_SUCCESS(rc))
{
intptr_t fdNew = RTFileToNative(hFileNew);
AssertMsg((int)fdNew == fdNew, ("%#zx\n", fdNew));
if ((int)fdNew == fdNew)
return (int)fdNew;
RTFileClose(hFileNew);
errno = EMFILE;
return -1;
}
}
errno = RTErrConvertToErrno(rc);
return -1;
}
RT_ALIAS_AND_EXPORT_NOCRT_SYMBOL(dup);
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