VirtualBox

source: vbox/trunk/src/VBox/Runtime/r3/nt/RTProcQueryParent-r3-nt.cpp@ 103795

Last change on this file since 103795 was 98103, checked in by vboxsync, 23 months ago

Copyright year updates by scm.

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1/* $Id: RTProcQueryParent-r3-nt.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2/** @file
3 * IPRT - Process, Windows.
4 */
5
6/*
7 * Copyright (C) 2006-2023 Oracle and/or its affiliates.
8 *
9 * This file is part of VirtualBox base platform packages, as
10 * available from https://www.virtualbox.org.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation, in version 3 of the
15 * License.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <https://www.gnu.org/licenses>.
24 *
25 * The contents of this file may alternatively be used under the terms
26 * of the Common Development and Distribution License Version 1.0
27 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28 * in the VirtualBox distribution, in which case the provisions of the
29 * CDDL are applicable instead of those of the GPL.
30 *
31 * You may elect to license modified versions of this file under the
32 * terms and conditions of either the GPL or the CDDL or both.
33 *
34 * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35 */
36
37
38/*********************************************************************************************************************************
39* Header Files *
40*********************************************************************************************************************************/
41#define LOG_GROUP RTLOGGROUP_PROCESS
42#include <iprt/nt/nt.h>
43
44#include <iprt/process.h>
45#include "internal/iprt.h"
46
47#include <iprt/assert.h>
48#include <iprt/errcore.h>
49
50
51
52RTR3DECL(int) RTProcQueryParent(RTPROCESS hProcess, PRTPROCESS phParent)
53{
54 NTSTATUS rcNt;
55 HANDLE hClose = RTNT_INVALID_HANDLE_VALUE;
56 HANDLE hNtProc;
57
58 /*
59 * Open the process. We take a shortcut if it's the current process.
60 */
61 if (hProcess == RTProcSelf())
62 hNtProc = NtCurrentProcess();
63 else
64 {
65 CLIENT_ID ClientId;
66 ClientId.UniqueProcess = (HANDLE)(uintptr_t)hProcess;
67 ClientId.UniqueThread = NULL;
68
69 OBJECT_ATTRIBUTES ObjAttrs;
70 InitializeObjectAttributes(&ObjAttrs, NULL, OBJ_CASE_INSENSITIVE, NULL, NULL);
71
72 rcNt = NtOpenProcess(&hClose, PROCESS_QUERY_LIMITED_INFORMATION, &ObjAttrs, &ClientId);
73 if (!NT_SUCCESS(rcNt))
74 rcNt = NtOpenProcess(&hClose, PROCESS_QUERY_INFORMATION, &ObjAttrs, &ClientId);
75 if (!NT_SUCCESS(rcNt))
76 return RTErrConvertFromNtStatus(rcNt);
77 hNtProc = hClose;
78 }
79
80 /*
81 * Query the information.
82 */
83 int rc;
84 PROCESS_BASIC_INFORMATION BasicInfo;
85 ULONG cbIgn;
86 rcNt = NtQueryInformationProcess(hNtProc, ProcessBasicInformation, &BasicInfo, sizeof(BasicInfo), &cbIgn);
87 if (NT_SUCCESS(rcNt))
88 {
89 *phParent = BasicInfo.InheritedFromUniqueProcessId;
90 rc = VINF_SUCCESS;
91 }
92 else
93 rc = RTErrConvertFromNtStatus(rcNt);
94
95 /*
96 * Clean up.
97 */
98 if (hClose != RTNT_INVALID_HANDLE_VALUE)
99 NtClose(hClose);
100
101 return rc;
102}
103
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