| 1 | /* $Id: tstFork.cpp 18991 2009-04-17 13:37:54Z 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 Sun Microsystems, Inc.
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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 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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| 27 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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| 28 | * additional information or have any questions.
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| 29 | */
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| 30 |
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| 31 |
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| 32 | /*******************************************************************************
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| 33 | * Header Files *
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| 34 | *******************************************************************************/
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| 35 | #include <iprt/test.h>
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| 36 | #include <iprt/process.h>
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| 37 | #include <iprt/stream.h>
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| 38 | #include <iprt/string.h>
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| 39 | #include <iprt/initterm.h>
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| 40 |
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| 41 | #ifndef RT_OS_WINDOWS
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| 42 | # include <unistd.h>
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| 43 | # include <sys/wait.h>
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| 44 | # include <errno.h>
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| 45 | #endif
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| 46 |
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| 47 |
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| 48 | int main()
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| 49 | {
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| 50 | /*
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| 51 | * Init the runtime and stuff.
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| 52 | */
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| 53 | int rc;
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| 54 | RTTEST hTest;
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| 55 | if ( RT_FAILURE(rc = RTR3Init())
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| 56 | || RT_FAILURE(rc = RTTestCreate("tstFork", &hTest)))
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| 57 | {
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| 58 | RTPrintf("tstFork: fatal initialization error: %Rrc\n", rc);
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| 59 | return 1;
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| 60 | }
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| 61 | RTTestBanner(hTest);
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| 62 |
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| 63 | #ifdef RT_OS_WINDOWS
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| 64 | RTTestPrintf(hTest, RTTESTLVL_ALWAYS, "Skipped\n");
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| 65 | #else
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| 66 | /*
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| 67 | * Get values that are supposed to or change accross the fork.
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| 68 | */
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| 69 | RTPROCESS const ProcBefore = RTProcSelf();
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| 70 |
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| 71 | /*
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| 72 | * Fork.
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| 73 | */
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| 74 | pid_t pid = fork();
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| 75 | if (pid == -1)
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| 76 | RTTestFailed(hTest, "fork() failed: %d - %s", errno, strerror(errno));
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| 77 | else if (pid == 0)
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| 78 | {
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| 79 | /*
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| 80 | * Check that the values has changed.
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| 81 | */
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| 82 | int rc = 0;
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| 83 | if (ProcBefore == RTProcSelf())
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| 84 | {
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| 85 | RTTestFailed(hTest, "%RTproc == %RTproc [child]", ProcBefore, RTProcSelf());
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| 86 | rc = 1;
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| 87 | }
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| 88 | return rc;
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| 89 | }
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| 90 | else
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| 91 | {
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| 92 | /*
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| 93 | * Check that the values didn't change.
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| 94 | */
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| 95 | RTTEST_CHECK(hTest, ProcBefore == RTProcSelf());
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| 96 |
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| 97 | /*
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| 98 | * Wait for the child.
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| 99 | */
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| 100 | int rc = 1;
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| 101 | while ( waitpid(pid, &rc, 0)
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| 102 | && errno == EINTR)
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| 103 | rc = 1;
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| 104 | if (!WIFEXITED(rc) || WEXITSTATUS(rc) != 0)
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| 105 | RTTestFailed(hTest, "rc=%#x", rc);
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| 106 | }
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| 107 | #endif
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| 108 |
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| 109 | /*
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| 110 | * Summary
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| 111 | */
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| 112 | return RTTestSummaryAndDestroy(hTest);
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| 113 | }
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| 114 |
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