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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: test4.c
**
** Purpose:
** - Attempt to call LockFile on a file without GENERIC_READ or
** GENERIC_WRITE (this should fail)
** - Attempt to overlap two locks, this should fail.
**
**
**============================================================*/
#include <palsuite.h>
char fileName[] = "testfile.tmp";
void OverlapTest()
{
HANDLE TheFile = NULL;
DWORD FileStart = 0;
const char lpBuffer[] = "This is a test file.";
DWORD bytesWritten;
BOOL bRc = TRUE;
TheFile = CreateFile(fileName,
GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_READ|FILE_SHARE_WRITE,
NULL,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
NULL);
if (TheFile == INVALID_HANDLE_VALUE)
{
Fail("ERROR: Could not open file '%s' with CreateFile. "
"GetLastError() returned %d.",fileName,GetLastError());
}
bRc = WriteFile(TheFile,
lpBuffer,
(DWORD)sizeof(lpBuffer),
&bytesWritten,
NULL);
if(!bRc)
{
Trace("ERROR: Could not write to file '%s' with WriteFile.",fileName);
if(CloseHandle(TheFile) == 0)
{
Fail("ERROR: CloseHandle failed to close the file.");
}
Fail("");
}
else if(bytesWritten != (DWORD)sizeof(lpBuffer))
{
Trace("ERROR: Could not write the correct number of bytes to the "
"file '%s' with WriteFile.",fileName);
if(CloseHandle(TheFile) == 0)
{
Fail("ERROR: CloseHandle failed to close the file.");
}
Fail("");
}
/* Lock the First 5 bytes of the File */
if(LockFile(TheFile, FileStart, 0, 5, 0) == 0)
{
Trace("ERROR: LockFile failed in Overlap test. "
"GetLastError returns %d.",
GetLastError());
if(CloseHandle(TheFile) == 0)
{
Fail("ERROR: CloseHandle failed to close the file.");
}
Fail("");
}
/* Lock from Byte 2 until 7 -- this overlaps and should return failure. */
if(LockFile(TheFile,FileStart+2, 0, 5, 0) != 0)
{
Trace("ERROR: LockFile returned success when it was overlapped on "
"an already locked region of the file.");
if(CloseHandle(TheFile) == 0)
{
Fail("ERROR: CloseHandle failed to close the file.");
}
Fail("");
}
/* Unlock the file */
if(UnlockFile(TheFile, FileStart, 0, 5, 0) == 0)
{
Trace("ERROR: UnlockFile failed in Overlap test. GetLastError "
"returns %d.",GetLastError());
if(CloseHandle(TheFile) == 0)
{
Fail("ERROR: CloseHandle failed to close the file.");
}
Fail("");
}
/* Close the File */
if(CloseHandle(TheFile) == 0)
{
Fail("ERROR: CloseHandle failed to close the file in the Overlap "
"test. GetLastError() returned %d.",GetLastError());
}
}
void FlagsTest(DWORD TheFlags, int ExpectedResult)
{
HANDLE TheFile = NULL;
DWORD FileStart = 0;
int result;
TheFile = CreateFile(fileName,
TheFlags,
FILE_SHARE_READ|FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL);
if (TheFile == INVALID_HANDLE_VALUE)
{
Fail("ERROR: Could not open file '%s' with CreateFile. "
"GetLastError() returned %d.",fileName,GetLastError());
}
/* Lock the First 5 bytes of the File. The result of this depends
upon which flags were set with the CreateFile.
*/
result = LockFile(TheFile, FileStart, 0, 5, 0);
/* If the expected result is 1, check to ensure the result is non-zero,
as non-zero is returned on success
*/
if(ExpectedResult == 1)
{
if(result == 0)
{
Trace("ERROR: LockFile returned zero when the expected result "
"was non-zero. It was passed the flag value %d.",
TheFlags);
if(CloseHandle(TheFile) == 0)
{
Fail("ERROR: CloseHandle failed to close the file.");
}
Fail("");
}
}
/* If the expected result is 0, check to ensure the result is 0 */
else
{
if(result != 0)
{
Trace("ERROR: LockFile returned %d when the expected result "
"was zero. It was passed the flag value %d.",
result, TheFlags);
if(CloseHandle(TheFile) == 0)
{
Fail("ERROR: CloseHandle failed to close the file.");
}
Fail("");
}
}
/* Only unlock the file if we expect it to be successfully locked */
if(ExpectedResult)
{
if(UnlockFile(TheFile,FileStart,0, 5, 0) == 0)
{
Fail("ERROR: UnlockFile failed in the Flags Test. GetLastError() "
"returned %d.",GetLastError());
if(CloseHandle(TheFile) == 0)
{
Fail("ERROR: CloseHandle failed to close the file.");
}
Fail("");
}
}
/* Close the File */
if(CloseHandle(TheFile) == 0)
{
Fail("ERROR: CloseHandle failed to close the file in the Flags "
"test. GetLastError() returned %d.",GetLastError());
}
}
int __cdecl main(int argc, char *argv[])
{
if(0 != (PAL_Initialize(argc, argv)))
{
return FAIL;
}
/* This test opens a file, then calls lock twice, overlapping the
regions and checking to ensure that this causes an error.
*/
OverlapTest();
/* Test that LockFile fails if no flags are set */
FlagsTest(0,0);
/* Test that LockFile passes if only GENERIC_READ is set */
FlagsTest(GENERIC_READ,1);
/* Test that LockFile passes if only GENERIC_WRITE is set */
FlagsTest(GENERIC_WRITE,1);
PAL_Terminate();
return PASS;
}
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