VirtualBox

source: vbox/trunk/src/VBox/Runtime/r3/posix/RTHandleGetStandard-posix.cpp@ 103795

Last change on this file since 103795 was 98103, checked in by vboxsync, 2 years ago

Copyright year updates by scm.

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1/* $Id: RTHandleGetStandard-posix.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2/** @file
3 * IPRT - RTHandleGetStandard, POSIX.
4 */
5
6/*
7 * Copyright (C) 2012-2023 Oracle and/or its affiliates.
8 *
9 * This file is part of VirtualBox base platform packages, as
10 * available from https://www.virtualbox.org.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation, in version 3 of the
15 * License.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <https://www.gnu.org/licenses>.
24 *
25 * The contents of this file may alternatively be used under the terms
26 * of the Common Development and Distribution License Version 1.0
27 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28 * in the VirtualBox distribution, in which case the provisions of the
29 * CDDL are applicable instead of those of the GPL.
30 *
31 * You may elect to license modified versions of this file under the
32 * terms and conditions of either the GPL or the CDDL or both.
33 *
34 * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35 */
36
37
38/*********************************************************************************************************************************
39* Header Files *
40*********************************************************************************************************************************/
41#include <errno.h>
42#include <sys/stat.h>
43#include <sys/types.h>
44#include <sys/ioctl.h>
45#include <fcntl.h>
46#ifdef _MSC_VER
47# include <io.h>
48#else
49# include <unistd.h>
50#endif
51
52#include "internal/iprt.h"
53#include <iprt/handle.h>
54
55#include <iprt/file.h>
56#include <iprt/pipe.h>
57#include <iprt/assert.h>
58#include <iprt/errcore.h>
59#include <iprt/log.h>
60
61#include "internal/socket.h"
62
63
64
65RTDECL(int) RTHandleGetStandard(RTHANDLESTD enmStdHandle, bool fLeaveOpen, PRTHANDLE ph)
66{
67 /*
68 * Validate and convert input.
69 */
70 AssertPtrReturn(ph, VERR_INVALID_POINTER);
71 int fd;
72 switch (enmStdHandle)
73 {
74 case RTHANDLESTD_INPUT: fd = 0; break;
75 case RTHANDLESTD_OUTPUT: fd = 1; break;
76 case RTHANDLESTD_ERROR: fd = 2; break;
77 default:
78 AssertFailedReturn(VERR_INVALID_PARAMETER);
79 }
80
81 /*
82 * Is the requested descriptor valid and which IPRT handle type does it
83 * best map on to?
84 */
85 struct stat st;
86 int rc = fstat(fd, &st);
87 if (rc == -1)
88 return RTErrConvertFromErrno(errno);
89
90 rc = fcntl(fd, F_GETFD, 0);
91 if (rc == -1)
92 return RTErrConvertFromErrno(errno);
93 bool const fInherit = !(rc & FD_CLOEXEC);
94
95 RTHANDLE h;
96 if (S_ISREG(st.st_mode))
97 h.enmType = RTHANDLETYPE_FILE;
98 else if ( S_ISFIFO(st.st_mode)
99 || (st.st_mode == 0 && st.st_nlink == 0 /*see bugs on bsd manpage*/))
100 h.enmType = RTHANDLETYPE_PIPE;
101 else if (S_ISSOCK(st.st_mode))
102 {
103 /** @todo check if it's really a socket... IIRC some OSes reports
104 * anonymouse pips as sockets. */
105 h.enmType = RTHANDLETYPE_SOCKET;
106 }
107#if 0 /** @todo re-enable this when the VFS pipe has been coded up. */
108 else if (isatty(fd))
109 h.enmType = RTHANDLETYPE_PIPE;
110#endif
111 else
112 h.enmType = RTHANDLETYPE_FILE;
113
114 /*
115 * Create the IPRT handle.
116 */
117 switch (h.enmType)
118 {
119 case RTHANDLETYPE_FILE:
120 /** @todo fLeaveOpen */
121 rc = RTFileFromNative(&h.u.hFile, fd);
122 break;
123
124 case RTHANDLETYPE_PIPE:
125 rc = RTPipeFromNative(&h.u.hPipe, fd,
126 (enmStdHandle == RTHANDLESTD_INPUT ? RTPIPE_N_READ : RTPIPE_N_WRITE)
127 | (fInherit ? RTPIPE_N_INHERIT : 0)
128 | (fLeaveOpen ? RTPIPE_N_LEAVE_OPEN : 0));
129 break;
130
131 case RTHANDLETYPE_SOCKET:
132 rc = rtSocketCreateForNative(&h.u.hSocket, fd, fLeaveOpen);
133 break;
134
135 default: /* shut up gcc */
136 return VERR_INTERNAL_ERROR;
137 }
138
139 if (RT_SUCCESS(rc))
140 *ph = h;
141
142 return rc;
143}
144
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