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/* $Id: tstFork.cpp $ */
/** @file
* IPRT Testcase - fork() issues.
*/
/*
* Copyright (C) 2009-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <iprt/test.h>
#include <iprt/process.h>
#include <iprt/stream.h>
#include <iprt/string.h>
#include <iprt/initterm.h>
#ifndef RT_OS_WINDOWS
# include <unistd.h>
# include <sys/wait.h>
# include <errno.h>
#endif
int main()
{
/*
* Init the runtime and stuff.
*/
RTTEST hTest;
int rc = RTTestInitAndCreate("tstFork", &hTest);
if (rc)
return rc;
RTTestBanner(hTest);
#ifdef RT_OS_WINDOWS
RTTestPrintf(hTest, RTTESTLVL_ALWAYS, "Skipped\n");
#else
/*
* Get values that are supposed to or change across the fork.
*/
RTPROCESS const ProcBefore = RTProcSelf();
/*
* Fork.
*/
pid_t pid = fork();
if (pid == 0)
{
/*
* Check that the values has changed.
*/
rc = 0;
if (ProcBefore == RTProcSelf())
{
RTTestFailed(hTest, "%RTproc == %RTproc [child]", ProcBefore, RTProcSelf());
rc = 1;
}
return rc;
}
if (pid != -1)
{
/*
* Check that the values didn't change.
*/
RTTEST_CHECK(hTest, ProcBefore == RTProcSelf());
/*
* Wait for the child.
*/
rc = 1;
while ( waitpid(pid, &rc, 0)
&& errno == EINTR)
rc = 1;
if (!WIFEXITED(rc) || WEXITSTATUS(rc) != 0)
RTTestFailed(hTest, "rc=%#x", rc);
}
else
RTTestFailed(hTest, "fork() failed: %d - %s", errno, strerror(errno));
#endif
/*
* Summary
*/
return RTTestSummaryAndDestroy(hTest);
}
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