| 1 | /* $Id: VBoxMPRegistry.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VBox WDDM Miniport registry related functions
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2011-2020 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 |
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| 18 | #include "common/VBoxMPCommon.h"
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| 19 |
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| 20 | VP_STATUS VBoxMPCmnRegInit(IN PVBOXMP_DEVEXT pExt, OUT VBOXMPCMNREGISTRY *pReg)
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| 21 | {
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| 22 | WCHAR Buf[512];
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| 23 | ULONG cbBuf = sizeof(Buf);
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| 24 | NTSTATUS Status = vboxWddmRegQueryDrvKeyName(pExt, cbBuf, Buf, &cbBuf);
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| 25 | AssertNtStatusSuccess(Status);
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| 26 | if (Status == STATUS_SUCCESS)
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| 27 | {
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| 28 | Status = vboxWddmRegOpenKey(pReg, Buf, GENERIC_READ | GENERIC_WRITE);
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| 29 | AssertNtStatusSuccess(Status);
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| 30 | if(Status == STATUS_SUCCESS)
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| 31 | return NO_ERROR;
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| 32 | }
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| 33 |
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| 34 | /* fall-back to make the subsequent VBoxVideoCmnRegXxx calls treat the fail accordingly
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| 35 | * basically needed to make as less modifications to the current XPDM code as possible */
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| 36 | *pReg = NULL;
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| 37 |
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| 38 | return ERROR_INVALID_PARAMETER;
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| 39 | }
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| 40 |
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| 41 | VP_STATUS VBoxMPCmnRegFini(IN VBOXMPCMNREGISTRY Reg)
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| 42 | {
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| 43 | if (!Reg)
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| 44 | {
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| 45 | return ERROR_INVALID_PARAMETER;
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| 46 | }
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| 47 |
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| 48 | NTSTATUS Status = ZwClose(Reg);
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| 49 | return Status == STATUS_SUCCESS ? NO_ERROR : ERROR_INVALID_PARAMETER;
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| 50 | }
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| 51 |
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| 52 | VP_STATUS VBoxMPCmnRegQueryDword(IN VBOXMPCMNREGISTRY Reg, PWSTR pName, uint32_t *pVal)
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| 53 | {
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| 54 | /* seems like the new code assumes the Reg functions zeroes up the value on failure */
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| 55 | *pVal = 0;
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| 56 |
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| 57 | if (!Reg)
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| 58 | {
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| 59 | return ERROR_INVALID_PARAMETER;
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| 60 | }
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| 61 |
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| 62 | NTSTATUS Status = vboxWddmRegQueryValueDword(Reg, pName, (PDWORD)pVal);
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| 63 | return Status == STATUS_SUCCESS ? NO_ERROR : ERROR_INVALID_PARAMETER;
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| 64 | }
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| 65 |
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| 66 | VP_STATUS VBoxMPCmnRegSetDword(IN VBOXMPCMNREGISTRY Reg, PWSTR pName, uint32_t Val)
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| 67 | {
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| 68 | if (!Reg)
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| 69 | {
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| 70 | return ERROR_INVALID_PARAMETER;
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| 71 | }
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| 72 |
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| 73 | NTSTATUS Status = vboxWddmRegSetValueDword(Reg, pName, Val);
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| 74 | return Status == STATUS_SUCCESS ? NO_ERROR : ERROR_INVALID_PARAMETER;
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| 75 | }
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