| 1 | /* $Id: tstFork.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT Testcase - fork() issues.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2009-2022 Oracle Corporation
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * The contents of this file may alternatively be used under the terms
|
|---|
| 18 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | *
|
|---|
| 23 | * You may elect to license modified versions of this file under the
|
|---|
| 24 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 |
|
|---|
| 28 | /*********************************************************************************************************************************
|
|---|
| 29 | * Header Files *
|
|---|
| 30 | *********************************************************************************************************************************/
|
|---|
| 31 | #include <iprt/test.h>
|
|---|
| 32 | #include <iprt/process.h>
|
|---|
| 33 | #include <iprt/stream.h>
|
|---|
| 34 | #include <iprt/string.h>
|
|---|
| 35 | #include <iprt/initterm.h>
|
|---|
| 36 |
|
|---|
| 37 | #ifndef RT_OS_WINDOWS
|
|---|
| 38 | # include <unistd.h>
|
|---|
| 39 | # include <sys/wait.h>
|
|---|
| 40 | # include <errno.h>
|
|---|
| 41 | #endif
|
|---|
| 42 |
|
|---|
| 43 |
|
|---|
| 44 | int main()
|
|---|
| 45 | {
|
|---|
| 46 | /*
|
|---|
| 47 | * Init the runtime and stuff.
|
|---|
| 48 | */
|
|---|
| 49 | RTTEST hTest;
|
|---|
| 50 | int rc = RTTestInitAndCreate("tstFork", &hTest);
|
|---|
| 51 | if (rc)
|
|---|
| 52 | return rc;
|
|---|
| 53 | RTTestBanner(hTest);
|
|---|
| 54 |
|
|---|
| 55 | #ifdef RT_OS_WINDOWS
|
|---|
| 56 | RTTestPrintf(hTest, RTTESTLVL_ALWAYS, "Skipped\n");
|
|---|
| 57 | #else
|
|---|
| 58 | /*
|
|---|
| 59 | * Get values that are supposed to or change across the fork.
|
|---|
| 60 | */
|
|---|
| 61 | RTPROCESS const ProcBefore = RTProcSelf();
|
|---|
| 62 |
|
|---|
| 63 | /*
|
|---|
| 64 | * Fork.
|
|---|
| 65 | */
|
|---|
| 66 | pid_t pid = fork();
|
|---|
| 67 | if (pid == 0)
|
|---|
| 68 | {
|
|---|
| 69 | /*
|
|---|
| 70 | * Check that the values has changed.
|
|---|
| 71 | */
|
|---|
| 72 | rc = 0;
|
|---|
| 73 | if (ProcBefore == RTProcSelf())
|
|---|
| 74 | {
|
|---|
| 75 | RTTestFailed(hTest, "%RTproc == %RTproc [child]", ProcBefore, RTProcSelf());
|
|---|
| 76 | rc = 1;
|
|---|
| 77 | }
|
|---|
| 78 | return rc;
|
|---|
| 79 | }
|
|---|
| 80 | if (pid != -1)
|
|---|
| 81 | {
|
|---|
| 82 | /*
|
|---|
| 83 | * Check that the values didn't change.
|
|---|
| 84 | */
|
|---|
| 85 | RTTEST_CHECK(hTest, ProcBefore == RTProcSelf());
|
|---|
| 86 |
|
|---|
| 87 | /*
|
|---|
| 88 | * Wait for the child.
|
|---|
| 89 | */
|
|---|
| 90 | rc = 1;
|
|---|
| 91 | while ( waitpid(pid, &rc, 0)
|
|---|
| 92 | && errno == EINTR)
|
|---|
| 93 | rc = 1;
|
|---|
| 94 | if (!WIFEXITED(rc) || WEXITSTATUS(rc) != 0)
|
|---|
| 95 | RTTestFailed(hTest, "rc=%#x", rc);
|
|---|
| 96 | }
|
|---|
| 97 | else
|
|---|
| 98 | RTTestFailed(hTest, "fork() failed: %d - %s", errno, strerror(errno));
|
|---|
| 99 | #endif
|
|---|
| 100 |
|
|---|
| 101 | /*
|
|---|
| 102 | * Summary
|
|---|
| 103 | */
|
|---|
| 104 | return RTTestSummaryAndDestroy(hTest);
|
|---|
| 105 | }
|
|---|
| 106 |
|
|---|
