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, 185 insertions, 0 deletions

diff --git a/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR0LibGenericRequest.cpp b/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR0LibGenericRequest.cpp
new file mode 100644
index 00000000..1e559e8b
--- /dev/null
+++ b/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR0LibGenericRequest.cpp
@@ -0,0 +1,185 @@
+/* $Id: VBoxGuestR0LibGenericRequest.cpp $ */
+/** @file
+ * VBoxGuestLibR0 - Generic VMMDev request management.
+ */
+
+/*
+ * Copyright (C) 2006-2019 Oracle Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "VBoxGuestR0LibInternal.h"
+#include <iprt/asm.h>
+#include <iprt/asm-amd64-x86.h>
+#include <iprt/assert.h>
+#include <iprt/string.h>
+#include <VBox/err.h>
+
+
+DECLR0VBGL(int) VbglGR0Verify(const VMMDevRequestHeader *pReq, size_t cbReq)
+{
+    size_t cbReqExpected;
+
+    if (RT_UNLIKELY(!pReq || cbReq < sizeof(VMMDevRequestHeader)))
+    {
+        dprintf(("VbglGR0Verify: Invalid parameter: pReq = %p, cbReq = %zu\n", pReq, cbReq));
+        return VERR_INVALID_PARAMETER;
+    }
+
+    if (RT_UNLIKELY(pReq->size > cbReq))
+    {
+        dprintf(("VbglGR0Verify: request size %u > buffer size %zu\n", pReq->size, cbReq));
+        return VERR_INVALID_PARAMETER;
+    }
+
+    /* The request size must correspond to the request type. */
+    cbReqExpected = vmmdevGetRequestSize(pReq->requestType);
+    if (RT_UNLIKELY(cbReq < cbReqExpected))
+    {
+        dprintf(("VbglGR0Verify: buffer size %zu < expected size %zu\n", cbReq, cbReqExpected));
+        return VERR_INVALID_PARAMETER;
+    }
+
+    if (cbReqExpected == cbReq)
+    {
+        /*
+         * This is most likely a fixed size request, and in this case the
+         * request size must be also equal to the expected size.
+         */
+        if (RT_UNLIKELY(pReq->size != cbReqExpected))
+        {
+            dprintf(("VbglGR0Verify: request size %u != expected size %zu\n", pReq->size, cbReqExpected));
+            return VERR_INVALID_PARAMETER;
+        }
+
+        return VINF_SUCCESS;
+    }
+
+    /*
+     * This can be a variable size request. Check the request type and limit the size
+     * to VMMDEV_MAX_VMMDEVREQ_SIZE, which is max size supported by the host.
+     *
+     * Note: Keep this list sorted for easier human lookup!
+     */
+    if (   pReq->requestType == VMMDevReq_ChangeMemBalloon
+        || pReq->requestType == VMMDevReq_GetDisplayChangeRequestMulti
+#ifdef VBOX_WITH_64_BITS_GUESTS
+        || pReq->requestType == VMMDevReq_HGCMCall32
+        || pReq->requestType == VMMDevReq_HGCMCall64
+#else
+        || pReq->requestType == VMMDevReq_HGCMCall
+#endif
+        || pReq->requestType == VMMDevReq_RegisterSharedModule
+        || pReq->requestType == VMMDevReq_ReportGuestUserState
+        || pReq->requestType == VMMDevReq_LogString
+        || pReq->requestType == VMMDevReq_SetPointerShape
+        || pReq->requestType == VMMDevReq_VideoSetVisibleRegion)
+    {
+        if (RT_UNLIKELY(cbReq > VMMDEV_MAX_VMMDEVREQ_SIZE))
+        {
+            dprintf(("VbglGR0Verify: VMMDevReq_LogString: buffer size %zu too big\n", cbReq));
+            return VERR_BUFFER_OVERFLOW; /** @todo is this error code ok? */
+        }
+    }
+    else
+    {
+        dprintf(("VbglGR0Verify: request size %u > buffer size %zu\n", pReq->size, cbReq));
+        return VERR_IO_BAD_LENGTH; /** @todo is this error code ok? */
+    }
+
+    return VINF_SUCCESS;
+}
+
+DECLR0VBGL(int) VbglR0GRAlloc(VMMDevRequestHeader **ppReq, size_t cbReq, VMMDevRequestType enmReqType)
+{
+    int rc = vbglR0Enter();
+    if (RT_SUCCESS(rc))
+    {
+        if (   ppReq
+            && cbReq >= sizeof(VMMDevRequestHeader)
+            && cbReq == (uint32_t)cbReq)
+        {
+            VMMDevRequestHeader *pReq = (VMMDevRequestHeader *)VbglR0PhysHeapAlloc((uint32_t)cbReq);
+            AssertMsgReturn(pReq, ("VbglR0GRAlloc: no memory (cbReq=%u)\n", cbReq), VERR_NO_MEMORY);
+            memset(pReq, 0xAA, cbReq);
+
+            pReq->size        = (uint32_t)cbReq;
+            pReq->version     = VMMDEV_REQUEST_HEADER_VERSION;
+            pReq->requestType = enmReqType;
+            pReq->rc          = VERR_GENERAL_FAILURE;
+            pReq->reserved1   = 0;
+#ifdef VBGL_VBOXGUEST
+            pReq->fRequestor  = VMMDEV_REQUESTOR_KERNEL        | VMMDEV_REQUESTOR_USR_DRV
+#else
+            pReq->fRequestor  = VMMDEV_REQUESTOR_KERNEL        | VMMDEV_REQUESTOR_USR_DRV_OTHER
+#endif
+
+                              | VMMDEV_REQUESTOR_CON_DONT_KNOW | VMMDEV_REQUESTOR_TRUST_NOT_GIVEN;
+            *ppReq = pReq;
+            rc = VINF_SUCCESS;
+        }
+        else
+        {
+            dprintf(("VbglR0GRAlloc: Invalid parameter: ppReq=%p cbReq=%u\n", ppReq, cbReq));
+            rc = VERR_INVALID_PARAMETER;
+        }
+    }
+    return rc;
+}
+
+DECLR0VBGL(int) VbglR0GRPerform(VMMDevRequestHeader *pReq)
+{
+    int rc = vbglR0Enter();
+    if (RT_SUCCESS(rc))
+    {
+        if (pReq)
+        {
+            RTCCPHYS PhysAddr = VbglR0PhysHeapGetPhysAddr(pReq);
+            if (   PhysAddr != 0
+                && PhysAddr < _4G) /* Port IO is 32 bit. */
+            {
+                ASMOutU32(g_vbgldata.portVMMDev + VMMDEV_PORT_OFF_REQUEST, (uint32_t)PhysAddr);
+                /* Make the compiler aware that the host has changed memory. */
+                ASMCompilerBarrier();
+                rc = pReq->rc;
+            }
+            else
+                rc = VERR_VBGL_INVALID_ADDR;
+        }
+        else
+            rc = VERR_INVALID_PARAMETER;
+    }
+    return rc;
+}
+
+DECLR0VBGL(void) VbglR0GRFree(VMMDevRequestHeader *pReq)
+{
+    int rc = vbglR0Enter();
+    if (RT_SUCCESS(rc))
+        VbglR0PhysHeapFree(pReq);
+}
+