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/* $Id: RTHandleGetStandard-posix.cpp $ */
/** @file
* IPRT - RTHandleGetStandard, POSIX.
*/
/*
* Copyright (C) 2012-2020 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE 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.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#ifdef _MSC_VER
# include <io.h>
#else
# include <unistd.h>
#endif
#include "internal/iprt.h"
#include <iprt/handle.h>
#include <iprt/file.h>
#include <iprt/pipe.h>
#include <iprt/assert.h>
#include <iprt/errcore.h>
#include <iprt/log.h>
#include "internal/socket.h"
RTDECL(int) RTHandleGetStandard(RTHANDLESTD enmStdHandle, PRTHANDLE ph)
{
/*
* Validate and convert input.
*/
AssertPtrReturn(ph, VERR_INVALID_POINTER);
int fd;
switch (enmStdHandle)
{
case RTHANDLESTD_INPUT: fd = 0; break;
case RTHANDLESTD_OUTPUT: fd = 1; break;
case RTHANDLESTD_ERROR: fd = 2; break;
default:
AssertFailedReturn(VERR_INVALID_PARAMETER);
}
/*
* Is the requested descriptor valid and which IPRT handle type does it
* best map on to?
*/
struct stat st;
int rc = fstat(fd, &st);
if (rc == -1)
return RTErrConvertFromErrno(errno);
rc = fcntl(fd, F_GETFD, 0);
if (rc == -1)
return RTErrConvertFromErrno(errno);
bool const fInherit = !(rc & FD_CLOEXEC);
RTHANDLE h;
if (S_ISREG(st.st_mode))
h.enmType = RTHANDLETYPE_FILE;
else if ( S_ISFIFO(st.st_mode)
|| (st.st_mode == 0 && st.st_nlink == 0 /*see bugs on bsd manpage*/))
h.enmType = RTHANDLETYPE_PIPE;
else if (S_ISSOCK(st.st_mode))
{
/** @todo check if it's really a socket... IIRC some OSes reports
* anonymouse pips as sockets. */
h.enmType = RTHANDLETYPE_SOCKET;
}
#if 0 /** @todo re-enable this when the VFS pipe has been coded up. */
else if (isatty(fd))
h.enmType = RTHANDLETYPE_PIPE;
#endif
else
h.enmType = RTHANDLETYPE_FILE;
/*
* Create the IPRT handle.
*/
switch (h.enmType)
{
case RTHANDLETYPE_FILE:
rc = RTFileFromNative(&h.u.hFile, fd);
break;
case RTHANDLETYPE_PIPE:
rc = RTPipeFromNative(&h.u.hPipe, fd,
(enmStdHandle == RTHANDLESTD_INPUT ? RTPIPE_N_READ : RTPIPE_N_WRITE)
| (fInherit ? RTPIPE_N_INHERIT : 0));
break;
case RTHANDLETYPE_SOCKET:
rc = rtSocketCreateForNative(&h.u.hSocket, fd);
break;
default: /* shut up gcc */
return VERR_INTERNAL_ERROR;
}
if (RT_SUCCESS(rc))
*ph = h;
return rc;
}
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