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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: SetFilePointer.c (test 4)
**
** Purpose: Tests the PAL implementation of the SetFilePointer function.
** Test the FILE_END option
**
** Assumes Successful:
** CreateFile
** ReadFile
** WriteFile
** strlen
** CloseHandle
** strcmp
** GetFileSize
**
**
**===================================================================*/
#include <palsuite.h>
const char* szText = "The quick brown fox jumped over the lazy dog's back.";
const char* szTextFile = "text.txt";
int __cdecl main(int argc, char *argv[])
{
HANDLE hFile = NULL;
DWORD dwByteCount = 0;
DWORD dwOffset = 0;
DWORD dwRc = 0;
BOOL bRc = FALSE;
if (0 != PAL_Initialize(argc,argv))
{
return FAIL;
}
/* create a test file */
hFile = CreateFile(szTextFile,
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
NULL);
if(hFile == INVALID_HANDLE_VALUE)
{
Fail("SetFilePointer: ERROR -> Unable to create file \"%s\".\n",
szTextFile);
}
bRc = WriteFile(hFile, szText, (DWORD)strlen(szText), &dwByteCount, NULL);
if (bRc == FALSE)
{
Trace("SetFilePointer: ERROR -> Unable to write to file \"%s\".\n",
szTextFile);
if (CloseHandle(hFile) != TRUE)
{
Trace("SetFilePointer: ERROR -> Unable to close file \"%s\".\n",
szTextFile);
}
if (!DeleteFileA(szTextFile))
{
Trace("SetFilePointer: ERROR -> Unable to delete file \"%s\".\n",
szTextFile);
}
PAL_TerminateEx(FAIL);
return FAIL;
}
/*
* move -1 from the end
*/
dwRc = SetFilePointer(hFile, -1, NULL, FILE_END);
if (dwRc == INVALID_SET_FILE_POINTER)
{
if (GetLastError() != ERROR_SUCCESS)
{
Trace("SetFilePointer: ERROR -> Failed to move the pointer "
"back one character from EOF.\n");
if (CloseHandle(hFile) != TRUE)
{
Trace("SetFilePointer: ERROR -> Unable to close file"
" \"%s\".\n", szTextFile);
}
if (!DeleteFileA(szTextFile))
{
Trace("SetFilePointer: ERROR -> Unable to delete file"
" \"%s\".\n", szTextFile);
}
PAL_TerminateEx(FAIL);
return FAIL;
}
}
else
{
/* verify */
if ((dwRc != strlen(szText)-1))
{
Trace("SetFilePointer: ERROR -> Failed to move the pointer"
" -1 bytes from EOF\n");
if (CloseHandle(hFile) != TRUE)
{
Trace("SetFilePointer: ERROR -> Unable to close file"
" \"%s\".\n", szTextFile);
}
if (!DeleteFileA(szTextFile))
{
Trace("SetFilePointer: ERROR -> Unable to delete file"
" \"%s\".\n", szTextFile);
}
PAL_TerminateEx(FAIL);
return FAIL;
}
}
/*
* move the file pointer 0 bytes from the end and verify
*/
dwRc = SetFilePointer(hFile, 0, NULL, FILE_END);
if (dwRc != strlen(szText))
{
Trace("SetFilePointer: ERROR -> Asked to move 0 bytes from the "
"end of the file. Function returned %ld instead of 52.\n", dwRc);
if (CloseHandle(hFile) != TRUE)
{
Trace("SetFilePointer: ERROR -> Unable to close file \"%s\".\n",
szTextFile);
}
if (!DeleteFileA(szTextFile))
{
Trace("SetFilePointer: ERROR -> Unable to delete file \"%s\".\n",
szTextFile);
}
PAL_TerminateEx(FAIL);
return FAIL;
}
/*
* move the pointer past the end of the file and verify
*/
dwRc = SetFilePointer(hFile, 20, NULL, FILE_END);
if (dwRc != strlen(szText)+20)
{
Trace("SetFilePointer: ERROR -> Asked to move 20 bytes past the "
"end of the file. Function returned %ld instead of %d.\n",
dwRc,
strlen(szText)+20);
if (CloseHandle(hFile) != TRUE)
{
Trace("SetFilePointer: ERROR -> Unable to close file \"%s\".\n",
szTextFile);
}
if (!DeleteFileA(szTextFile))
{
Trace("SetFilePointer: ERROR -> Unable to delete file \"%s\".\n",
szTextFile);
}
PAL_TerminateEx(FAIL);
return FAIL;
}
else
{
/* verify results */
bRc = SetEndOfFile(hFile);
if ((dwRc = GetFileSize(hFile, NULL)) != strlen(szText)+20)
{
Trace("SetFilePointer: ERROR -> Asked to move back 20 bytes past"
" theend of the file. GetFileSize returned %ld whereas it "
"should have been %d.\n",
dwRc,
strlen(szText)+20);
if (CloseHandle(hFile) != TRUE)
{
Trace("SetFilePointer: ERROR -> Unable to close file"
" \"%s\".\n", szTextFile);
}
if (!DeleteFileA(szTextFile))
{
Trace("SetFilePointer: ERROR -> Unable to delete file"
" \"%s\".\n", szTextFile);
}
PAL_TerminateEx(FAIL);
return FAIL;
}
}
/*
* move the pointer backwards to before the start of the file and verify
*/
dwOffset = (dwRc + 20) * -1;
dwRc = SetFilePointer(hFile, dwOffset, NULL, FILE_END);
if ((dwRc != INVALID_SET_FILE_POINTER) ||
(GetLastError() == ERROR_SUCCESS))
{
Trace("SetFilePointer: ERROR -> Was able to move the pointer "
"to before the beginning of the file.\n");
if (CloseHandle(hFile) != TRUE)
{
Trace("SetFilePointer: ERROR -> Unable to close file \"%s\".\n",
szTextFile);
}
if (!DeleteFileA(szTextFile))
{
Trace("SetFilePointer: ERROR -> Unable to delete file \"%s\".\n",
szTextFile);
}
PAL_TerminateEx(FAIL);
return FAIL;
}
if (CloseHandle(hFile) != TRUE)
{
Trace("SetFilePointer: ERROR -> Unable to close file \"%s\".\n",
szTextFile);
if (!DeleteFileA(szTextFile))
{
Trace("SetFilePointer: ERROR -> Unable to delete file \"%s\".\n",
szTextFile);
}
PAL_TerminateEx(FAIL);
return FAIL;
}
if (!DeleteFileA(szTextFile))
{
Fail("SetFilePointer: ERROR -> Unable to delete file \"%s\".\n",
szTextFile);
}
PAL_Terminate();
return PASS;
}
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