| 1 | /* $Id: RTHandleGetStandard-posix.cpp 76452 2018-12-25 01:41:25Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - RTHandleGetStandard, POSIX.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2012-2017 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*********************************************************************************************************************************
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| 29 | * Header Files *
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| 30 | *********************************************************************************************************************************/
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| 31 | #include <errno.h>
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| 32 | #include <sys/stat.h>
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| 33 | #include <sys/types.h>
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| 34 | #include <sys/ioctl.h>
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| 35 | #include <fcntl.h>
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| 36 | #ifdef _MSC_VER
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| 37 | # include <io.h>
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| 38 | #else
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| 39 | # include <unistd.h>
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| 40 | #endif
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| 41 |
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| 42 | #include "internal/iprt.h"
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| 43 | #include <iprt/handle.h>
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| 44 |
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| 45 | #include <iprt/file.h>
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| 46 | #include <iprt/pipe.h>
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| 47 | #include <iprt/assert.h>
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| 48 | #include <iprt/errcore.h>
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| 49 | #include <iprt/log.h>
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| 50 |
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| 51 | #include "internal/socket.h"
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| 52 |
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| 53 |
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| 54 |
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| 55 | RTDECL(int) RTHandleGetStandard(RTHANDLESTD enmStdHandle, PRTHANDLE ph)
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| 56 | {
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| 57 | /*
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| 58 | * Validate and convert input.
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| 59 | */
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| 60 | AssertPtrReturn(ph, VERR_INVALID_POINTER);
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| 61 | int fd;
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| 62 | switch (enmStdHandle)
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| 63 | {
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| 64 | case RTHANDLESTD_INPUT: fd = 0; break;
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| 65 | case RTHANDLESTD_OUTPUT: fd = 1; break;
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| 66 | case RTHANDLESTD_ERROR: fd = 2; break;
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| 67 | default:
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| 68 | AssertFailedReturn(VERR_INVALID_PARAMETER);
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| 69 | }
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| 70 |
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| 71 | /*
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| 72 | * Is the requested descriptor valid and which IPRT handle type does it
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| 73 | * best map on to?
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| 74 | */
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| 75 | struct stat st;
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| 76 | int rc = fstat(fd, &st);
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| 77 | if (rc == -1)
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| 78 | return RTErrConvertFromErrno(errno);
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| 79 |
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| 80 | rc = fcntl(fd, F_GETFD, 0);
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| 81 | if (rc == -1)
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| 82 | return RTErrConvertFromErrno(errno);
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| 83 | bool const fInherit = !(rc & FD_CLOEXEC);
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| 84 |
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| 85 | RTHANDLE h;
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| 86 | if (S_ISREG(st.st_mode))
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| 87 | h.enmType = RTHANDLETYPE_FILE;
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| 88 | else if ( S_ISFIFO(st.st_mode)
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| 89 | || (st.st_mode == 0 && st.st_nlink == 0 /*see bugs on bsd manpage*/))
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| 90 | h.enmType = RTHANDLETYPE_PIPE;
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| 91 | else if (S_ISSOCK(st.st_mode))
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| 92 | {
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| 93 | /** @todo check if it's really a socket... IIRC some OSes reports
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| 94 | * anonymouse pips as sockets. */
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| 95 | h.enmType = RTHANDLETYPE_SOCKET;
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| 96 | }
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| 97 | #if 0 /** @todo re-enable this when the VFS pipe has been coded up. */
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| 98 | else if (isatty(fd))
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| 99 | h.enmType = RTHANDLETYPE_PIPE;
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| 100 | #endif
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| 101 | else
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| 102 | h.enmType = RTHANDLETYPE_FILE;
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| 103 |
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| 104 | /*
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| 105 | * Create the IPRT handle.
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| 106 | */
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| 107 | switch (h.enmType)
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| 108 | {
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| 109 | case RTHANDLETYPE_FILE:
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| 110 | rc = RTFileFromNative(&h.u.hFile, fd);
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| 111 | break;
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| 112 |
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| 113 | case RTHANDLETYPE_PIPE:
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| 114 | rc = RTPipeFromNative(&h.u.hPipe, fd,
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| 115 | (enmStdHandle == RTHANDLESTD_INPUT ? RTPIPE_N_READ : RTPIPE_N_WRITE)
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| 116 | | (fInherit ? RTPIPE_N_INHERIT : 0));
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| 117 | break;
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| 118 |
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| 119 | case RTHANDLETYPE_SOCKET:
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| 120 | rc = rtSocketCreateForNative(&h.u.hSocket, fd);
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| 121 | break;
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| 122 |
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| 123 | default: /* shut up gcc */
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| 124 | return VERR_INTERNAL_ERROR;
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| 125 | }
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| 126 |
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| 127 | if (RT_SUCCESS(rc))
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| 128 | *ph = h;
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| 129 |
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| 130 | return rc;
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| 131 | }
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| 132 |
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