| 1 | /* $Id: RTProcQueryParent-r3-nt.cpp 62477 2016-07-22 18:27:37Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Process, Windows.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2016 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 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*********************************************************************************************************************************
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| 29 | * Header Files *
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| 30 | *********************************************************************************************************************************/
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| 31 | #define LOG_GROUP RTLOGGROUP_PROCESS
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| 32 | #include <iprt/nt/nt.h>
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| 33 |
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| 34 | #include <iprt/process.h>
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| 35 | #include "internal/iprt.h"
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| 36 |
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| 37 | #include <iprt/assert.h>
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| 38 | #include <iprt/err.h>
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| 39 |
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| 40 |
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| 41 |
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| 42 | RTR3DECL(int) RTProcQueryParent(RTPROCESS hProcess, PRTPROCESS phParent)
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| 43 | {
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| 44 | NTSTATUS rcNt;
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| 45 | HANDLE hClose = RTNT_INVALID_HANDLE_VALUE;
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| 46 | HANDLE hNtProc;
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| 47 |
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| 48 | /*
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| 49 | * Open the process. We take a shortcut if it's the current process.
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| 50 | */
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| 51 | if (hProcess == RTProcSelf())
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| 52 | hNtProc = NtCurrentProcess();
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| 53 | else
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| 54 | {
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| 55 | CLIENT_ID ClientId;
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| 56 | ClientId.UniqueProcess = (HANDLE)hProcess;
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| 57 | ClientId.UniqueThread = NULL;
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| 58 |
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| 59 | OBJECT_ATTRIBUTES ObjAttrs;
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| 60 | InitializeObjectAttributes(&ObjAttrs, NULL, OBJ_CASE_INSENSITIVE, NULL, NULL);
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| 61 |
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| 62 | rcNt = NtOpenProcess(&hClose, PROCESS_QUERY_LIMITED_INFORMATION, &ObjAttrs, &ClientId);
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| 63 | if (!NT_SUCCESS(rcNt))
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| 64 | rcNt = NtOpenProcess(&hClose, PROCESS_QUERY_INFORMATION, &ObjAttrs, &ClientId);
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| 65 | if (!NT_SUCCESS(rcNt))
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| 66 | return RTErrConvertFromNtStatus(rcNt);
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| 67 | hNtProc = hClose;
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| 68 | }
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| 69 |
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| 70 | /*
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| 71 | * Query the information.
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| 72 | */
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| 73 | int rc;
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| 74 | PROCESS_BASIC_INFORMATION BasicInfo;
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| 75 | ULONG cbIgn;
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| 76 | rcNt = NtQueryInformationProcess(hNtProc, ProcessBasicInformation, &BasicInfo, sizeof(BasicInfo), &cbIgn);
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| 77 | if (NT_SUCCESS(rcNt))
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| 78 | {
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| 79 | *phParent = BasicInfo.InheritedFromUniqueProcessId;
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| 80 | rc = VINF_SUCCESS;
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| 81 | }
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| 82 | else
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| 83 | rc = RTErrConvertFromNtStatus(rcNt);
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| 84 |
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| 85 | /*
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| 86 | * Clean up.
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| 87 | */
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| 88 | if (hClose != RTNT_INVALID_HANDLE_VALUE)
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| 89 | NtClose(hClose);
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| 90 |
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| 91 | return rc;
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| 92 | }
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| 93 |
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