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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: WriteFile.c (test 4)
**
** Purpose: Tests the PAL implementation of the WriteFile function.
** Performs multiple writes to a file at different locations
** then verifies the results with GetFileSize.
**
** dependency:
** CreateFile.
** GetFileSize.
** FlushFileBuffers
** SetFilePointer.
** CloseHandle.
** DeleteFile.
**
**
**
**===================================================================*/
#include <palsuite.h>
BOOL CleanUp(HANDLE hFile, const char * fileName)
{
BOOL bRc = TRUE;
if (CloseHandle(hFile) != TRUE)
{
bRc = FALSE;
Trace("WriteFile: ERROR -> Unable to close file \"%s\","
" error: %ld.\n", fileName, GetLastError());
}
if (!DeleteFileA(fileName))
{
bRc = FALSE;
Trace("WriteFile: ERROR -> Unable to delete file \"%s\","
" error: %ld.\n", fileName, GetLastError());
}
return bRc;
}
int __cdecl main(int argc, char *argv[])
{
const char* szStringTest = "1234567890";
const char* szWritableFile = "writeable.txt";
HANDLE hFile = NULL;
DWORD dwBytesWritten;
if (0 != PAL_Initialize(argc,argv))
{
return FAIL;
}
/* create the test file */
hFile = CreateFile(szWritableFile,
GENERIC_WRITE,
FILE_SHARE_WRITE,
NULL,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
NULL);
if(hFile == INVALID_HANDLE_VALUE)
{
Fail("WriteFile: ERROR -> Unable to create file \"%s\".\n",
szWritableFile);
}
/* test wtriting to the file */
if( WriteFile(hFile, /* HANDLE handle to file */
szStringTest, /* data buffer */
strlen(szStringTest), /* number of bytes to write */
&dwBytesWritten, /* number of bytes written */
NULL) /* overlapped buffer */
==0)
{
Trace("WriteFile: ERROR -> Unable to write to file error: %ld \n",
GetLastError());
CleanUp(hFile,szWritableFile);
Fail("");
}
if(!FlushFileBuffers(hFile))
{ Trace("WriteFile: ERROR -> Call to FlushFile Buffers failed "
"error %ld \n",GetLastError());
CleanUp(hFile,szWritableFile);
Fail("");
}
/* check the file size */
if(GetFileSize(hFile, NULL)!=strlen(szStringTest))
{
Trace("WriteFile: ERROR -> writing %u chars to empty file "
"caused its size to become %u\n",strlen(szStringTest),
GetFileSize(hFile, NULL));
CleanUp(hFile,szWritableFile);
Fail("");
}
/* test writing to the file at position 5. */
SetFilePointer(
hFile, /* handle to file */
0x5, /* bytes to move pointer */
NULL, /* bytes to move pointer */
FILE_BEGIN /* starting point */
);
if( WriteFile(hFile, /* HANDLE handle to file */
szStringTest, /* data buffer */
strlen(szStringTest), /* number of bytes to write */
&dwBytesWritten, /* number of bytes written */
NULL) /* overlapped buffer */
==0)
{
Trace("WriteFile: ERROR -> Unable to write to file after "
" moiving the file poiner to 5 error: %ld \n",
GetLastError());
CleanUp(hFile,szWritableFile);
Fail("");
}
if(!FlushFileBuffers(hFile))
{
Trace("WriteFile: ERROR -> Call to FlushFile Buffers failed "
"error %ld \n",GetLastError());
CleanUp(hFile,szWritableFile);
Fail("");
}
/* Check the file size */
if(GetFileSize(hFile, NULL)!=(strlen(szStringTest)+5))
{
Trace("WriteFile: ERROR -> writing %u chars to the file after "
"sitting the file pointer to 5 resulted in wrong file size; "
"Expected %u resulted %u.",strlen(szStringTest),
(strlen(szStringTest)+5),GetFileSize(hFile, NULL));
CleanUp(hFile,szWritableFile);
Fail("");
}
if (!CleanUp(hFile,szWritableFile))
{
Fail("");
}
PAL_Terminate();
return PASS;
}
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