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/* $Id: tstVMMFork.cpp $ */
/** @file
* VMM Fork Test.
*/
/*
* Copyright (C) 2006-2020 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <VBox/vmm/vm.h>
#include <VBox/vmm/vmm.h>
#include <iprt/errcore.h>
#include <VBox/log.h>
#include <iprt/assert.h>
#include <iprt/initterm.h>
#include <iprt/stream.h>
#include <errno.h>
#include <sys/wait.h>
#include <unistd.h>
/*********************************************************************************************************************************
* Defined Constants And Macros *
*********************************************************************************************************************************/
#define TESTCASE "tstVMMFork"
#define AUTO_TEST_ARGS 1
VMMR3DECL(int) VMMDoTest(PVM pVM);
int main(int argc, char* argv[])
{
int rcErrors = 0;
/*
* Initialize the runtime.
*/
RTR3InitExe(argc, &argv, RTR3INIT_FLAGS_SUPLIB);
#ifndef AUTO_TEST_ARGS
if (argc < 2)
{
RTPrintf("syntax: %s command [args]\n"
"\n"
"command Command to run under child process in fork.\n"
"[args] Arguments to command.\n", argv[0]);
return 1;
}
#endif
/*
* Create empty VM.
*/
RTPrintf(TESTCASE ": Initializing...\n");
PVM pVM;
PUVM pUVM;
int rc = VMR3Create(1, NULL, NULL, NULL, NULL, NULL, &pVM, &pUVM);
if (RT_SUCCESS(rc))
{
/*
* Do testing.
*/
int iCowTester = 0;
char cCowTester = 'a';
#ifndef AUTO_TEST_ARGS
int cArgs = argc - 1;
char **ppszArgs = &argv[1];
#else
int cArgs = 2;
char *ppszArgs[3];
ppszArgs[0] = (char *)"/bin/sleep";
ppszArgs[1] = (char *)"3";
ppszArgs[2] = NULL;
#endif
RTPrintf(TESTCASE ": forking current process...\n");
pid_t pid = fork();
if (pid < 0)
{
/* Bad. fork() failed! */
RTPrintf(TESTCASE ": error: fork() failed.\n");
rcErrors++;
}
else if (pid == 0)
{
/*
* The child process.
* Write to some local variables to trigger copy-on-write if it's used.
*/
RTPrintf(TESTCASE ": running child process...\n");
RTPrintf(TESTCASE ": writing local variables...\n");
iCowTester = 2;
cCowTester = 'z';
RTPrintf(TESTCASE ": calling execv() with command-line:\n");
for (int i = 0; i < cArgs; i++)
RTPrintf(TESTCASE ": ppszArgs[%d]=%s\n", i, ppszArgs[i]);
execv(ppszArgs[0], ppszArgs);
RTPrintf(TESTCASE ": error: execv() returned to caller. errno=%d.\n", errno);
_exit(-1);
}
else
{
/*
* The parent process.
* Wait for child & run VMM test to ensure things are fine.
*/
int result;
while (waitpid(pid, &result, 0) < 0)
;
if (!WIFEXITED(result) || WEXITSTATUS(result) != 0)
{
RTPrintf(TESTCASE ": error: failed to run child process. errno=%d\n", errno);
rcErrors++;
}
if (rcErrors == 0)
{
RTPrintf(TESTCASE ": fork() returned fine.\n");
RTPrintf(TESTCASE ": testing VM after fork.\n");
VMR3ReqCallWaitU(pUVM, VMCPUID_ANY, (PFNRT)VMMDoTest, 1, pVM);
STAMR3Dump(pUVM, "*");
}
}
if (rcErrors > 0)
RTPrintf(TESTCASE ": error: %d error(s) during fork(). Cannot proceed to test the VM.\n", rcErrors);
else
RTPrintf(TESTCASE ": fork() and VM test, SUCCESS.\n");
/*
* Cleanup.
*/
rc = VMR3PowerOff(pUVM);
if (!RT_SUCCESS(rc))
{
RTPrintf(TESTCASE ": error: failed to power off vm! rc=%Rrc\n", rc);
rcErrors++;
}
rc = VMR3Destroy(pUVM);
if (!RT_SUCCESS(rc))
{
RTPrintf(TESTCASE ": error: failed to destroy vm! rc=%Rrc\n", rc);
rcErrors++;
}
VMR3ReleaseUVM(pUVM);
}
else
{
RTPrintf(TESTCASE ": fatal error: failed to create vm! rc=%Rrc\n", rc);
rcErrors++;
}
return rcErrors;
}
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