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/* $Id: tstFileLock.cpp $ */
/** @file
* IPRT Testcase - File Locks.
*/
/*
* Copyright (C) 2006-2023 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/file.h>
#include <iprt/stream.h>
#include <iprt/err.h>
#include <iprt/thread.h> /* for RTThreadSleep() */
#include <iprt/initterm.h>
#include <iprt/string.h>
#include <stdio.h>
static char achTest1[] = "Test line 1\n";
static char achTest2[] = "Test line 2\n";
static char achTest3[] = "Test line 3\n";
static bool fRun = false;
/** @todo Create a tstFileLock-2 which doesn't require interaction and counts errors. */
int main()
{
RTR3InitExeNoArguments(0);
RTPrintf("tstFileLock: TESTING\n");
RTFILE File;
int rc = RTFileOpen(&File, "tstLock.tst", RTFILE_O_READWRITE | RTFILE_O_OPEN | RTFILE_O_DENY_NONE);
RTPrintf("File open: rc=%Rrc\n", rc);
if (RT_FAILURE(rc))
{
if (rc != VERR_FILE_NOT_FOUND && rc != VERR_OPEN_FAILED)
{
RTPrintf("FATAL\n");
return 1;
}
rc = RTFileOpen(&File, "tstLock.tst", RTFILE_O_READWRITE | RTFILE_O_CREATE | RTFILE_O_DENY_NONE);
RTPrintf("File create: rc=%Rrc\n", rc);
if (RT_FAILURE(rc))
{
RTPrintf("FATAL\n");
return 2;
}
fRun = true;
}
/* grow file a little */
rc = RTFileSetSize(File, fRun ? 2048 : 20480);
RTPrintf("File size: rc=%Rrc\n", rc);
int buf;
/* read test. */
rc = RTFileRead(File, &buf, sizeof(buf), NULL);
RTPrintf("Read: rc=%Rrc\n", rc);
/* write test. */
rc = RTFileWrite(File, achTest1, strlen(achTest1), NULL);
RTPrintf("Write: rc=%Rrc\n", rc);
/* lock: read, non-blocking. */
rc = RTFileLock(File, RTFILE_LOCK_READ | RTFILE_LOCK_IMMEDIATELY, 0, _4G);
RTPrintf("Lock: read, non-blocking, rc=%Rrc\n", rc);
bool fl = RT_SUCCESS(rc);
/* read test. */
rc = RTFileRead(File, &buf, sizeof(buf), NULL);
RTPrintf("Read: rc=%Rrc\n", rc);
/* write test. */
rc = RTFileWrite(File, achTest2, strlen(achTest2), NULL);
RTPrintf("Write: rc=%Rrc\n", rc);
RTPrintf("Lock test will change in three seconds\n");
for (int i = 0; i < 3; i++)
{
RTThreadSleep(1000);
RTPrintf(".");
}
RTPrintf("\n");
/* change lock: write, non-blocking. */
rc = RTFileLock(File, RTFILE_LOCK_WRITE | RTFILE_LOCK_IMMEDIATELY, 0, _4G);
RTPrintf("Change lock: write, non-blocking, rc=%Rrc\n", rc);
RTPrintf("Test will unlock in three seconds\n");
for (int i = 0; i < 3; i++)
{
RTThreadSleep(1000);
RTPrintf(".");
}
RTPrintf("\n");
/* remove lock. */
if (fl)
{
fl = false;
rc = RTFileUnlock(File, 0, _4G);
RTPrintf("Unlock: rc=%Rrc\n", rc);
RTPrintf("Write test will lock in three seconds\n");
for (int i = 0; i < 3; i++)
{
RTThreadSleep(1000);
RTPrintf(".");
}
RTPrintf("\n");
}
/* lock: write, non-blocking. */
rc = RTFileLock(File, RTFILE_LOCK_WRITE | RTFILE_LOCK_IMMEDIATELY, 0, _4G);
RTPrintf("Lock: write, non-blocking, rc=%Rrc\n", rc);
fl = RT_SUCCESS(rc);
/* grow file test */
rc = RTFileSetSize(File, fRun ? 2048 : 20480);
RTPrintf("File size: rc=%Rrc\n", rc);
/* read test. */
rc = RTFileRead(File, &buf, sizeof(buf), NULL);
RTPrintf("Read: rc=%Rrc\n", rc);
/* write test. */
rc = RTFileWrite(File, achTest3, strlen(achTest3), NULL);
RTPrintf("Write: rc=%Rrc\n", rc);
RTPrintf("Continuing to next test in three seconds\n");
for (int i = 0; i < 3; i++)
{
RTThreadSleep(1000);
RTPrintf(".");
}
RTPrintf("\n");
RTFileClose(File);
RTFileDelete("tstLock.tst");
RTPrintf("tstFileLock: I've no recollection of this testcase succeeding or not, sorry.\n");
return 0;
}
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