| 1 | /* $Id: tstFork.cpp 96407 2022-08-22 17:43:14Z 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) 2009-2022 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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| 41 | #include <iprt/test.h>
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| 42 | #include <iprt/process.h>
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| 43 | #include <iprt/stream.h>
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| 44 | #include <iprt/string.h>
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| 45 | #include <iprt/initterm.h>
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| 46 |
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| 47 | #ifndef RT_OS_WINDOWS
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| 48 | # include <unistd.h>
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| 49 | # include <sys/wait.h>
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| 50 | # include <errno.h>
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| 51 | #endif
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| 52 |
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| 53 |
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| 54 | int main()
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| 55 | {
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| 56 | /*
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| 57 | * Init the runtime and stuff.
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| 58 | */
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| 59 | RTTEST hTest;
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| 60 | int rc = RTTestInitAndCreate("tstFork", &hTest);
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| 61 | if (rc)
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| 62 | return rc;
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| 63 | RTTestBanner(hTest);
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| 64 |
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| 65 | #ifdef RT_OS_WINDOWS
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| 66 | RTTestPrintf(hTest, RTTESTLVL_ALWAYS, "Skipped\n");
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| 67 | #else
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| 68 | /*
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| 69 | * Get values that are supposed to or change across the fork.
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| 70 | */
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| 71 | RTPROCESS const ProcBefore = RTProcSelf();
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| 72 |
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| 73 | /*
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| 74 | * Fork.
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| 75 | */
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| 76 | pid_t pid = fork();
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| 77 | 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 | 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 | if (pid != -1)
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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 | 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 | else
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| 108 | RTTestFailed(hTest, "fork() failed: %d - %s", errno, strerror(errno));
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| 109 | #endif
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| 110 |
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| 111 | /*
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| 112 | * Summary
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| 113 | */
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| 114 | return RTTestSummaryAndDestroy(hTest);
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| 115 | }
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| 116 |
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