Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 128 insertions, 0 deletions

diff --git a/src/VBox/Runtime/include/internal/pipe.h b/src/VBox/Runtime/include/internal/pipe.h
new file mode 100644
index 00000000..ecac6c82
--- /dev/null
+++ b/src/VBox/Runtime/include/internal/pipe.h
@@ -0,0 +1,128 @@
+/* $Id: pipe.h $ */
+/** @file
+ * IPRT - Internal RTPipe header.
+ */
+
+/*
+ * Copyright (C) 2010-2019 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.
+ */
+
+#ifndef IPRT_INCLUDED_INTERNAL_pipe_h
+#define IPRT_INCLUDED_INTERNAL_pipe_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/pipe.h>
+
+RT_C_DECLS_BEGIN
+
+/**
+ * Internal RTPollSetAdd helper that returns the handle that should be added to
+ * the pollset.
+ *
+ * @returns Valid handle on success, INVALID_HANDLE_VALUE on failure.
+ * @param   hPipe               The pipe handle.
+ * @param   fEvents             The events we're polling for.
+ * @param   phNative            Where to put the primary handle.
+ */
+int         rtPipePollGetHandle(RTPIPE hPipe, uint32_t fEvents, PRTHCINTPTR phNative);
+
+/**
+ * Internal RTPoll helper that polls the pipe handle and, if @a fNoWait is
+ * clear, starts whatever actions we've got running during the poll call.
+ *
+ * @returns 0 if no pending events, actions initiated if @a fNoWait is clear.
+ *          Event mask (in @a fEvents) and no actions if the handle is ready
+ *          already.
+ *          UINT32_MAX (asserted) if the pipe handle is busy in I/O or a
+ *          different poll set.
+ *
+ * @param   hPipe               The pipe handle.
+ * @param   hPollSet            The poll set handle (for access checks).
+ * @param   fEvents             The events we're polling for.
+ * @param   fFinalEntry         Set if this is the final entry for this handle
+ *                              in this poll set.  This can be used for dealing
+ *                              with duplicate entries.
+ * @param   fNoWait             Set if it's a zero-wait poll call.  Clear if
+ *                              we'll wait for an event to occur.
+ */
+uint32_t    rtPipePollStart(RTPIPE hPipe, RTPOLLSET hPollSet, uint32_t fEvents, bool fFinalEntry, bool fNoWait);
+
+/**
+ * Called after a WaitForMultipleObjects returned in order to check for pending
+ * events and stop whatever actions that rtPipePollStart() initiated.
+ *
+ * @returns Event mask or 0.
+ *
+ * @param   hPipe               The pipe handle.
+ * @param   fEvents             The events we're polling for.
+ * @param   fFinalEntry         Set if this is the final entry for this handle
+ *                              in this poll set.  This can be used for dealing
+ *                              with duplicate entries.  Only keep in mind that
+ *                              this method is called in reverse order, so the
+ *                              first call will have this set (when the entire
+ *                              set was processed).
+ * @param   fHarvestEvents      Set if we should check for pending events.
+ */
+uint32_t    rtPipePollDone(RTPIPE hPipe, uint32_t fEvents, bool fFinalEntry, bool fHarvestEvents);
+
+
+/**
+ * Fakes basic query info data for RTPipeQueryInfo.
+ *
+ * @param   pObjInfo            The output structure.
+ * @param   enmAddAttr          The extra attribute.
+ * @param   fReadPipe           Set if read pipe, clear if write pipe.
+ */
+DECLINLINE(void) rtPipeFakeQueryInfo(PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr, bool fReadPipe)
+{
+    RT_ZERO(*pObjInfo);
+    if (fReadPipe)
+        pObjInfo->Attr.fMode     = RTFS_TYPE_FIFO | RTFS_UNIX_IRUSR | RTFS_DOS_READONLY;
+    else
+        pObjInfo->Attr.fMode     = RTFS_TYPE_FIFO | RTFS_UNIX_IWUSR;
+    pObjInfo->Attr.enmAdditional = enmAddAttr;
+    switch (enmAddAttr)
+    {
+        case RTFSOBJATTRADD_UNIX:
+            pObjInfo->Attr.u.Unix.cHardlinks = 1;
+            break;
+        case RTFSOBJATTRADD_UNIX_OWNER:
+            pObjInfo->Attr.u.UnixOwner.uid = NIL_RTUID;
+            break;
+        case RTFSOBJATTRADD_UNIX_GROUP:
+            pObjInfo->Attr.u.UnixGroup.gid = NIL_RTGID;
+            break;
+        case RTFSOBJATTRADD_EASIZE:
+            break;
+        case RTFSOBJATTRADD_32BIT_SIZE_HACK:
+        case RTFSOBJATTRADD_NOTHING:
+            /* shut up gcc. */
+            break;
+        /* no default, want warnings. */
+    }
+}
+
+
+RT_C_DECLS_END
+
+#endif /* !IPRT_INCLUDED_INTERNAL_pipe_h */
+