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/* $Id: tstFileAppendWin-1.cpp $ */
/** @file
* IPRT Testcase - Exploration of File Appending on Windows.
*/
/*
* Copyright (C) 2008-2023 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/win/windows.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
/*********************************************************************************************************************************
* Global Variables *
*********************************************************************************************************************************/
static int g_cErrors = 0;
static int MyFailure(const char *pszFormat, ...)
{
va_list va;
printf("tstFileAppendWin-1: FATAL: ");
va_start(va, pszFormat);
vprintf(pszFormat, va);
va_end(va);
g_cErrors++;
return 1;
}
void MyError(const char *pszFormat, ...)
{
va_list va;
printf("tstFileAppendWin-1: ERROR: ");
va_start(va, pszFormat);
vprintf(pszFormat, va);
va_end(va);
g_cErrors++;
}
int main()
{
HANDLE hFile;
LARGE_INTEGER off;
DWORD cb;
char szBuf[256];
printf("tstFileAppendWin-1: TESTING...\n");
/*
* Open it write only and do some appending.
* Checking that read fails and that the file position changes after the read.
*/
DeleteFile("tstFileAppendWin-1.tst");
hFile = CreateFile("tstFileAppendWin-1.tst",
(FILE_GENERIC_WRITE & ~FILE_WRITE_DATA),
FILE_SHARE_READ,
NULL,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
NULL);
if (hFile == INVALID_HANDLE_VALUE)
return MyFailure("1st CreateFile: %d\n", GetLastError());
off.QuadPart = 0;
if (!SetFilePointerEx(hFile, off, &off, FILE_CURRENT))
MyError("1st SetFilePointerEx failed: %d\n", GetLastError());
else if (off.QuadPart != 0)
MyError("unexpected position on open: %ld - expected 0\n", (long)off.QuadPart);
if (!WriteFile(hFile, "0123456789", 10, &cb, NULL))
MyError("write fail: %d\n", GetLastError());
off.QuadPart = 0;
if (!SetFilePointerEx(hFile, off, &off, FILE_CURRENT))
MyError("2nd SetFilePointerEx failed: %d\n", GetLastError());
else if (off.QuadPart != 10)
MyError("unexpected position on write: %ld - expected 10\n", (long)off.QuadPart);
else
printf("tstFileAppendWin-1: off=%ld after first write\n", (long)off.QuadPart);
SetLastError(0);
if (ReadFile(hFile, szBuf, 1, &cb, NULL))
MyError("read didn't fail! cb=%#lx lasterr=%d\n", (long)cb, GetLastError());
off.QuadPart = 5;
if (!SetFilePointerEx(hFile, off, &off, FILE_BEGIN))
MyError("3rd SetFilePointerEx failed: %d\n", GetLastError());
else if (off.QuadPart != 5)
MyError("unexpected position after set file pointer: %ld - expected 5\n", (long)off.QuadPart);
CloseHandle(hFile);
/*
* Open it write only and do some more appending.
* Checking the initial position and that it changes after the write.
*/
hFile = CreateFile("tstFileAppendWin-1.tst",
(FILE_GENERIC_WRITE & ~FILE_WRITE_DATA),
FILE_SHARE_READ,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL);
if (hFile == INVALID_HANDLE_VALUE)
return MyFailure("2nd CreateFile: %d\n", GetLastError());
off.QuadPart = 0;
if (!SetFilePointerEx(hFile, off, &off, FILE_CURRENT))
MyError("4th SetFilePointerEx failed: %d\n", GetLastError());
else if (off.QuadPart != 0)
MyError("unexpected position on open: %ld - expected 0\n", (long)off.QuadPart);
else
printf("tstFileAppendWin-1: off=%ld on 2nd open\n", (long)off.QuadPart);
if (!WriteFile(hFile, "abcdefghij", 10, &cb, NULL))
MyError("2nd write failed: %d\n", GetLastError());
off.QuadPart = 0;
if (!SetFilePointerEx(hFile, off, &off, FILE_CURRENT))
MyError("5th SetFilePointerEx failed: %d\n", GetLastError());
else if (off.QuadPart != 20)
MyError("unexpected position on 2nd write: %ld - expected 20\n", (long)off.QuadPart);
else
printf("tstFileAppendWin-1: off=%ld after 2nd write\n", (long)off.QuadPart);
CloseHandle(hFile);
/*
* Open it read/write.
* Check the initial position and read stuff. Then append some more and
* check the new position and see that read returns 0/EOF. Finally,
* do some seeking and read from a new position.
*/
hFile = CreateFile("tstFileAppendWin-1.tst",
(FILE_GENERIC_WRITE & ~FILE_WRITE_DATA) | GENERIC_READ,
FILE_SHARE_READ,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL);
if (hFile == INVALID_HANDLE_VALUE)
return MyFailure("3rd CreateFile: %d\n", GetLastError());
off.QuadPart = 0;
if (!SetFilePointerEx(hFile, off, &off, FILE_CURRENT))
MyError("6th SetFilePointerEx failed: %d\n", GetLastError());
else if (off.QuadPart != 0)
MyError("unexpected position on open: %ld - expected 0\n", (long)off.QuadPart);
else
printf("tstFileAppendWin-1: off=%ld on 3rd open\n", (long)off.QuadPart);
if (!ReadFile(hFile, szBuf, 10, &cb, NULL) || cb != 10)
MyError("1st ReadFile failed: %d\n", GetLastError());
else if (memcmp(szBuf, "0123456789", 10))
MyError("read the wrong stuff: %.10s - expected 0123456789\n", szBuf);
off.QuadPart = 0;
if (!SetFilePointerEx(hFile, off, &off, FILE_CURRENT))
MyError("7th SetFilePointerEx failed: %d\n", GetLastError());
else if (off.QuadPart != 10)
MyError("unexpected position on 1st read: %ld - expected 0\n", (long)off.QuadPart);
else
printf("tstFileAppendWin-1: off=%ld on 1st read\n", (long)off.QuadPart);
if (!WriteFile(hFile, "klmnopqrst", 10, &cb, NULL))
MyError("3rd write failed: %d\n", GetLastError());
off.QuadPart = 0;
if (!SetFilePointerEx(hFile, off, &off, FILE_CURRENT))
MyError("8th SetFilePointerEx failed: %d\n", GetLastError());
else if (off.QuadPart != 30)
MyError("unexpected position on 3rd write: %ld - expected 30\n", (long)off.QuadPart);
else
printf("tstFileAppendWin-1: off=%ld after 3rd write\n", (long)off.QuadPart);
SetLastError(0);
if (ReadFile(hFile, szBuf, 1, &cb, NULL) && cb != 0)
MyError("read after write didn't fail! cb=%#lx lasterr=%d\n", (long)cb, GetLastError());
off.QuadPart = 15;
if (!SetFilePointerEx(hFile, off, &off, FILE_BEGIN))
MyError("9th SetFilePointerEx failed: %d\n", GetLastError());
else if (off.QuadPart != 15)
MyError("unexpected position on 3rd write: %ld - expected 15\n", (long)off.QuadPart);
else
{
if (!ReadFile(hFile, szBuf, 10, &cb, NULL) || cb != 10)
MyError("1st ReadFile failed: %d\n", GetLastError());
else if (memcmp(szBuf, "fghijklmno", 10))
MyError("read the wrong stuff: %.10s - expected fghijklmno\n", szBuf);
off.QuadPart = 0;
if (!SetFilePointerEx(hFile, off, &off, FILE_CURRENT))
MyError("10th SetFilePointerEx failed: %d\n", GetLastError());
else if (off.QuadPart != 25)
MyError("unexpected position on 2nd read: %ld - expected 25\n", (long)off.QuadPart);
else
printf("tstFileAppendWin-1: off=%ld after 2nd read\n", (long)off.QuadPart);
}
CloseHandle(hFile);
/*
* Open it read only + append and check that we cannot write to it.
*/
hFile = CreateFile("tstFileAppendWin-1.tst",
FILE_APPEND_DATA | GENERIC_READ,
FILE_SHARE_READ,
NULL,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
NULL);
if (hFile == INVALID_HANDLE_VALUE)
return MyFailure("4th CreateFile: %d\n", GetLastError());
SetLastError(0);
if (WriteFile(hFile, "pqrstuvwx", 10, &cb, NULL))
MyError("write didn't on read-only+append open: %d cb=%#lx\n", GetLastError(), (long)cb);
CloseHandle(hFile);
DeleteFile("tstfileAppendWin-1.tst");
if (g_cErrors)
printf("tstFileAppendWin-1: FAILED\n");
else
printf("tstFileAppendWin-1: SUCCESS\n");
return g_cErrors ? 1 : 0;
}
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