| 1 | /* $Id: tstFork.cpp 62477 2016-07-22 18:27:37Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT Testcase - fork() issues.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2009-2016 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 | #include <iprt/test.h>
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| 32 | #include <iprt/process.h>
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| 33 | #include <iprt/stream.h>
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| 34 | #include <iprt/string.h>
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| 35 | #include <iprt/initterm.h>
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| 36 |
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| 37 | #ifndef RT_OS_WINDOWS
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| 38 | # include <unistd.h>
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| 39 | # include <sys/wait.h>
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| 40 | # include <errno.h>
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| 41 | #endif
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| 42 |
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| 43 |
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| 44 | int main()
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| 45 | {
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| 46 | /*
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| 47 | * Init the runtime and stuff.
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| 48 | */
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| 49 | RTTEST hTest;
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| 50 | int rc = RTTestInitAndCreate("tstFork", &hTest);
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| 51 | if (rc)
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| 52 | return rc;
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| 53 | RTTestBanner(hTest);
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| 54 |
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| 55 | #ifdef RT_OS_WINDOWS
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| 56 | RTTestPrintf(hTest, RTTESTLVL_ALWAYS, "Skipped\n");
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| 57 | #else
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| 58 | /*
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| 59 | * Get values that are supposed to or change across the fork.
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| 60 | */
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| 61 | RTPROCESS const ProcBefore = RTProcSelf();
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| 62 |
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| 63 | /*
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| 64 | * Fork.
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| 65 | */
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| 66 | pid_t pid = fork();
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| 67 | if (pid == 0)
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| 68 | {
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| 69 | /*
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| 70 | * Check that the values has changed.
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| 71 | */
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| 72 | rc = 0;
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| 73 | if (ProcBefore == RTProcSelf())
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| 74 | {
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| 75 | RTTestFailed(hTest, "%RTproc == %RTproc [child]", ProcBefore, RTProcSelf());
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| 76 | rc = 1;
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| 77 | }
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| 78 | return rc;
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| 79 | }
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| 80 | if (pid != -1)
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| 81 | {
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| 82 | /*
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| 83 | * Check that the values didn't change.
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| 84 | */
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| 85 | RTTEST_CHECK(hTest, ProcBefore == RTProcSelf());
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| 86 |
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| 87 | /*
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| 88 | * Wait for the child.
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| 89 | */
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| 90 | rc = 1;
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| 91 | while ( waitpid(pid, &rc, 0)
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| 92 | && errno == EINTR)
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| 93 | rc = 1;
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| 94 | if (!WIFEXITED(rc) || WEXITSTATUS(rc) != 0)
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| 95 | RTTestFailed(hTest, "rc=%#x", rc);
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| 96 | }
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| 97 | else
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| 98 | RTTestFailed(hTest, "fork() failed: %d - %s", errno, strerror(errno));
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| 99 | #endif
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| 100 |
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| 101 | /*
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| 102 | * Summary
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| 103 | */
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| 104 | return RTTestSummaryAndDestroy(hTest);
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| 105 | }
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| 106 |
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