| 1 | /* $Id: pipe.h 82968 2020-02-04 10:35:17Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - Internal RTPipe header.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2010-2020 Oracle Corporation
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * The contents of this file may alternatively be used under the terms
|
|---|
| 18 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | *
|
|---|
| 23 | * You may elect to license modified versions of this file under the
|
|---|
| 24 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 | #ifndef IPRT_INCLUDED_INTERNAL_pipe_h
|
|---|
| 28 | #define IPRT_INCLUDED_INTERNAL_pipe_h
|
|---|
| 29 | #ifndef RT_WITHOUT_PRAGMA_ONCE
|
|---|
| 30 | # pragma once
|
|---|
| 31 | #endif
|
|---|
| 32 |
|
|---|
| 33 | #include <iprt/pipe.h>
|
|---|
| 34 |
|
|---|
| 35 | RT_C_DECLS_BEGIN
|
|---|
| 36 |
|
|---|
| 37 | /**
|
|---|
| 38 | * Internal RTPollSetAdd helper that returns the handle that should be added to
|
|---|
| 39 | * the pollset.
|
|---|
| 40 | *
|
|---|
| 41 | * @returns Valid handle on success, INVALID_HANDLE_VALUE on failure.
|
|---|
| 42 | * @param hPipe The pipe handle.
|
|---|
| 43 | * @param fEvents The events we're polling for.
|
|---|
| 44 | * @param phNative Where to put the primary handle.
|
|---|
| 45 | */
|
|---|
| 46 | int rtPipePollGetHandle(RTPIPE hPipe, uint32_t fEvents, PRTHCINTPTR phNative);
|
|---|
| 47 |
|
|---|
| 48 | /**
|
|---|
| 49 | * Internal RTPoll helper that polls the pipe handle and, if @a fNoWait is
|
|---|
| 50 | * clear, starts whatever actions we've got running during the poll call.
|
|---|
| 51 | *
|
|---|
| 52 | * @returns 0 if no pending events, actions initiated if @a fNoWait is clear.
|
|---|
| 53 | * Event mask (in @a fEvents) and no actions if the handle is ready
|
|---|
| 54 | * already.
|
|---|
| 55 | * UINT32_MAX (asserted) if the pipe handle is busy in I/O or a
|
|---|
| 56 | * different poll set.
|
|---|
| 57 | *
|
|---|
| 58 | * @param hPipe The pipe handle.
|
|---|
| 59 | * @param hPollSet The poll set handle (for access checks).
|
|---|
| 60 | * @param fEvents The events we're polling for.
|
|---|
| 61 | * @param fFinalEntry Set if this is the final entry for this handle
|
|---|
| 62 | * in this poll set. This can be used for dealing
|
|---|
| 63 | * with duplicate entries.
|
|---|
| 64 | * @param fNoWait Set if it's a zero-wait poll call. Clear if
|
|---|
| 65 | * we'll wait for an event to occur.
|
|---|
| 66 | */
|
|---|
| 67 | uint32_t rtPipePollStart(RTPIPE hPipe, RTPOLLSET hPollSet, uint32_t fEvents, bool fFinalEntry, bool fNoWait);
|
|---|
| 68 |
|
|---|
| 69 | /**
|
|---|
| 70 | * Called after a WaitForMultipleObjects returned in order to check for pending
|
|---|
| 71 | * events and stop whatever actions that rtPipePollStart() initiated.
|
|---|
| 72 | *
|
|---|
| 73 | * @returns Event mask or 0.
|
|---|
| 74 | *
|
|---|
| 75 | * @param hPipe The pipe handle.
|
|---|
| 76 | * @param fEvents The events we're polling for.
|
|---|
| 77 | * @param fFinalEntry Set if this is the final entry for this handle
|
|---|
| 78 | * in this poll set. This can be used for dealing
|
|---|
| 79 | * with duplicate entries. Only keep in mind that
|
|---|
| 80 | * this method is called in reverse order, so the
|
|---|
| 81 | * first call will have this set (when the entire
|
|---|
| 82 | * set was processed).
|
|---|
| 83 | * @param fHarvestEvents Set if we should check for pending events.
|
|---|
| 84 | */
|
|---|
| 85 | uint32_t rtPipePollDone(RTPIPE hPipe, uint32_t fEvents, bool fFinalEntry, bool fHarvestEvents);
|
|---|
| 86 |
|
|---|
| 87 |
|
|---|
| 88 | /**
|
|---|
| 89 | * Fakes basic query info data for RTPipeQueryInfo.
|
|---|
| 90 | *
|
|---|
| 91 | * @param pObjInfo The output structure.
|
|---|
| 92 | * @param enmAddAttr The extra attribute.
|
|---|
| 93 | * @param fReadPipe Set if read pipe, clear if write pipe.
|
|---|
| 94 | */
|
|---|
| 95 | DECLINLINE(void) rtPipeFakeQueryInfo(PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr, bool fReadPipe)
|
|---|
| 96 | {
|
|---|
| 97 | RT_ZERO(*pObjInfo);
|
|---|
| 98 | if (fReadPipe)
|
|---|
| 99 | pObjInfo->Attr.fMode = RTFS_TYPE_FIFO | RTFS_UNIX_IRUSR | RTFS_DOS_READONLY;
|
|---|
| 100 | else
|
|---|
| 101 | pObjInfo->Attr.fMode = RTFS_TYPE_FIFO | RTFS_UNIX_IWUSR;
|
|---|
| 102 | pObjInfo->Attr.enmAdditional = enmAddAttr;
|
|---|
| 103 | switch (enmAddAttr)
|
|---|
| 104 | {
|
|---|
| 105 | case RTFSOBJATTRADD_UNIX:
|
|---|
| 106 | pObjInfo->Attr.u.Unix.cHardlinks = 1;
|
|---|
| 107 | break;
|
|---|
| 108 | case RTFSOBJATTRADD_UNIX_OWNER:
|
|---|
| 109 | pObjInfo->Attr.u.UnixOwner.uid = NIL_RTUID;
|
|---|
| 110 | break;
|
|---|
| 111 | case RTFSOBJATTRADD_UNIX_GROUP:
|
|---|
| 112 | pObjInfo->Attr.u.UnixGroup.gid = NIL_RTGID;
|
|---|
| 113 | break;
|
|---|
| 114 | case RTFSOBJATTRADD_EASIZE:
|
|---|
| 115 | break;
|
|---|
| 116 | case RTFSOBJATTRADD_32BIT_SIZE_HACK:
|
|---|
| 117 | case RTFSOBJATTRADD_NOTHING:
|
|---|
| 118 | /* shut up gcc. */
|
|---|
| 119 | break;
|
|---|
| 120 | /* no default, want warnings. */
|
|---|
| 121 | }
|
|---|
| 122 | }
|
|---|
| 123 |
|
|---|
| 124 |
|
|---|
| 125 | RT_C_DECLS_END
|
|---|
| 126 |
|
|---|
| 127 | #endif /* !IPRT_INCLUDED_INTERNAL_pipe_h */
|
|---|
| 128 |
|
|---|
