1 files changed, 90 insertions, 0 deletions
diff --git a/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibGR.cpp b/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibGR.cpp
new file mode 100644
index 00000000..d5f28cb4
--- /dev/null
+++ b/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibGR.cpp
@@ -0,0 +1,90 @@
+/* $Id: VBoxGuestR3LibGR.cpp $ */
+/** @file
+ * VBoxGuestR3Lib - Ring-3 Support Library for VirtualBox guest additions, GR.
+ */
+
+/*
+ * Copyright (C) 2007-2022 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox 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.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <iprt/mem.h>
+#include <iprt/assert.h>
+#include <iprt/string.h>
+#include <iprt/errcore.h>
+#include "VBoxGuestR3LibInternal.h"
+
+
+int vbglR3GRAlloc(VMMDevRequestHeader **ppReq, size_t cb, VMMDevRequestType enmReqType)
+{
+    VMMDevRequestHeader *pReq;
+
+    AssertPtrReturn(ppReq, VERR_INVALID_PARAMETER);
+    AssertMsgReturn(cb >= sizeof(VMMDevRequestHeader) && cb < _1G, ("%#zx vs %#zx\n", cb, sizeof(VMMDevRequestHeader)),
+                    VERR_INVALID_PARAMETER);
+
+    pReq = (VMMDevRequestHeader *)RTMemTmpAlloc(cb);
+    if (RT_LIKELY(pReq))
+    {
+        pReq->size        = (uint32_t)cb;
+        pReq->version     = VMMDEV_REQUEST_HEADER_VERSION;
+        pReq->requestType = enmReqType;
+        pReq->rc          = VERR_GENERAL_FAILURE;
+        pReq->reserved1   = 0;
+        pReq->fRequestor  = 0;
+
+        *ppReq = pReq;
+
+        return VINF_SUCCESS;
+    }
+    return VERR_NO_MEMORY;
+}
+
+
+int vbglR3GRPerform(VMMDevRequestHeader *pReq)
+{
+    PVBGLREQHDR    pReqHdr = (PVBGLREQHDR)pReq;
+    uint32_t const cbReq   = pReqHdr->cbIn;
+    Assert(pReqHdr->cbOut == 0 || pReqHdr->cbOut == cbReq);
+    pReqHdr->cbOut = cbReq;
+    if (pReq->size < _1K)
+        return vbglR3DoIOCtl(VBGL_IOCTL_VMMDEV_REQUEST(cbReq), pReqHdr, cbReq);
+    return vbglR3DoIOCtl(VBGL_IOCTL_VMMDEV_REQUEST_BIG, pReqHdr, cbReq);
+}
+
+
+void vbglR3GRFree(VMMDevRequestHeader *pReq)
+{
+    RTMemTmpFree(pReq);
+}
+