VirtualBox

source: vbox/trunk/src/VBox/Runtime/testcase/tstFork.cpp@ 98715

Last change on this file since 98715 was 98103, checked in by vboxsync, 2 years ago

Copyright year updates by scm.

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1/* $Id: tstFork.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2/** @file
3 * IPRT Testcase - fork() issues.
4 */
5
6/*
7 * Copyright (C) 2009-2023 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#include <iprt/test.h>
42#include <iprt/process.h>
43#include <iprt/stream.h>
44#include <iprt/string.h>
45#include <iprt/initterm.h>
46
47#ifndef RT_OS_WINDOWS
48# include <unistd.h>
49# include <sys/wait.h>
50# include <errno.h>
51#endif
52
53
54int main()
55{
56 /*
57 * Init the runtime and stuff.
58 */
59 RTTEST hTest;
60 int rc = RTTestInitAndCreate("tstFork", &hTest);
61 if (rc)
62 return rc;
63 RTTestBanner(hTest);
64
65#ifdef RT_OS_WINDOWS
66 RTTestPrintf(hTest, RTTESTLVL_ALWAYS, "Skipped\n");
67#else
68 /*
69 * Get values that are supposed to or change across the fork.
70 */
71 RTPROCESS const ProcBefore = RTProcSelf();
72
73 /*
74 * Fork.
75 */
76 pid_t pid = fork();
77 if (pid == 0)
78 {
79 /*
80 * Check that the values has changed.
81 */
82 rc = 0;
83 if (ProcBefore == RTProcSelf())
84 {
85 RTTestFailed(hTest, "%RTproc == %RTproc [child]", ProcBefore, RTProcSelf());
86 rc = 1;
87 }
88 return rc;
89 }
90 if (pid != -1)
91 {
92 /*
93 * Check that the values didn't change.
94 */
95 RTTEST_CHECK(hTest, ProcBefore == RTProcSelf());
96
97 /*
98 * Wait for the child.
99 */
100 rc = 1;
101 while ( waitpid(pid, &rc, 0)
102 && errno == EINTR)
103 rc = 1;
104 if (!WIFEXITED(rc) || WEXITSTATUS(rc) != 0)
105 RTTestFailed(hTest, "rc=%#x", rc);
106 }
107 else
108 RTTestFailed(hTest, "fork() failed: %d - %s", errno, strerror(errno));
109#endif
110
111 /*
112 * Summary
113 */
114 return RTTestSummaryAndDestroy(hTest);
115}
116
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