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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
/*=============================================================
**
** Source: test6.c
**
** Purpose:
** Append to a file which is locked until the end of the file, and
** append to a file which is locked past the end of the file. (The first
** should succeed, while the second should fail)
**
**
**============================================================*/
#include <palsuite.h>
#include "../LockFile.h"
#define HELPER "helper"
#define FILENAME "testfile.txt"
/* This test checks that you can append to a file which is locked from Start
to EOF.
*/
void Test1()
{
HANDLE TheFile = NULL;
DWORD FileStart = 0;
DWORD FileEnd = 0;
int result;
char* WriteBuffer = "12345678901234567890123456";
/* Call the helper function to Create a file, write 'WriteBuffer' to
the file, and lock the file.
*/
FileEnd = strlen(WriteBuffer);
TheFile = CreateAndLockFile(TheFile,FILENAME, WriteBuffer,
FileStart, FileEnd);
/*
Launch another proccess which will attempt to append to the
end of the file. Note: This returns -1 if the setup failed in some way.
*/
result = RunHelper(HELPER);
if(result == -1)
{
Fail("ERROR: The Helper program failed in setting up the "
"test, so it could never be run.");
}
else if(result == 0)
{
Fail("ERROR: Failed to append to the file which was Locked from "
"start until EOF. Should have been able to append to this "
"file still. GetLastError() is %d.",GetLastError());
}
if(UnlockFile(TheFile, FileStart, 0, FileEnd, 0) == 0)
{
Fail("ERROR: UnlockFile failed. GetLastError returns %d.",
GetLastError());
}
if(CloseHandle(TheFile) == 0)
{
Fail("ERROR: CloseHandle failed to close the file. "
"GetLastError() returned %d.",GetLastError());
}
}
/* This test checks that you can't append to a file which is locked beyond
EOF.
*/
void Test2()
{
HANDLE TheFile = NULL;
DWORD FileStart = 0;
DWORD FileEnd = 0;
int result;
char* WriteBuffer = "12345678901234567890123456";
/* Call the helper function to Create a file, write 'WriteBuffer' to
the file, and lock the file.
*/
FileEnd = strlen(WriteBuffer);
TheFile = CreateAndLockFile(TheFile,FILENAME, WriteBuffer,
FileStart, FileEnd+20);
/*
Launch another proccess which will attempt to append to the
end of the file.
*/
result = RunHelper(HELPER);
if(result == -1)
{
Fail("ERROR: The Helper program failed in setting up the "
"test, so it could never be run.");
}
else if(result > 0)
{
Fail("ERROR: The Helper program successfully appended to the "
"end of the file, even though it was locked beyond EOF. This "
"should have failed.");
}
if(UnlockFile(TheFile, FileStart, 0, FileEnd+20, 0) == 0)
{
Fail("ERROR: UnlockFile failed. GetLastError returns %d.",
GetLastError());
}
if(CloseHandle(TheFile) == 0)
{
Fail("ERROR: CloseHandle failed to close the file. "
"GetLastError() returned %d.",GetLastError());
}
}
int __cdecl main(int argc, char *argv[])
{
if(0 != (PAL_Initialize(argc, argv)))
{
return FAIL;
}
/* Test a file which is locked until EOF to see if you can append */
Test1();
/* Test a file which is locked past EOF to ensure you can't append */
Test2();
PAL_Terminate();
return PASS;
}
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