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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: createfilemapping.c (test 7)
**
** Purpose: Positive test the CreateFileMapping API.
** Test CreateFileMapping to a "swap" handle with
** access PAGE_READWRITE.
**
**
**============================================================*/
#include <palsuite.h>
const int MAPPINGSIZE = 2048;
HANDLE SWAP_HANDLE = ((VOID *)(-1));
int __cdecl main(int argc, char *argv[])
{
char testString[] = "this is a test string";
char lpObjectName[] = "myMappingObject";
char results[2048];
int RetVal = PASS;
HANDLE hFileMapRW;
LPVOID lpMapViewRW;
LPVOID lpMapViewRO;
/* Initialize the PAL environment.
*/
if(0 != PAL_Initialize(argc, argv))
{
return FAIL;
}
/* Initialize the buffers.
*/
memset(results, 0, MAPPINGSIZE);
/* Create a named file-mapping object with file handle FileHandle
* and with PAGE_READWRITE protection.
*/
hFileMapRW = CreateFileMapping(
SWAP_HANDLE,
NULL, /*not inherited*/
PAGE_READWRITE, /*read write*/
0, /*high-order size*/
MAPPINGSIZE, /*low-order size*/
lpObjectName); /*unnamed object*/
if(NULL == hFileMapRW)
{
Fail("ERROR:%u: Failed to create File Mapping.\n",
GetLastError());
}
/* Create a map view to the READWRITE file mapping.
*/
lpMapViewRW = MapViewOfFile(
hFileMapRW,
FILE_MAP_ALL_ACCESS,/* access code */
0, /* high order offset*/
0, /* low order offset*/
MAPPINGSIZE); /* number of bytes for map */
if(NULL == lpMapViewRW)
{
Trace("ERROR:%u: Failed to call MapViewOfFile "
"API to map a view of file!\n",
GetLastError());
RetVal = FAIL;
goto CleanUpOne;
}
/* Create a map view to the READWRITE file mapping.
*/
lpMapViewRO = MapViewOfFile(
hFileMapRW,
FILE_MAP_READ, /* access code */
0, /* high order offset*/
0, /* low order offset*/
MAPPINGSIZE); /* number of bytes for map */
if(NULL == lpMapViewRO)
{
Trace("ERROR:%u: Failed to call MapViewOfFile "
"API to map a view of file!\n",
GetLastError());
RetVal = FAIL;
goto CleanUpTwo;
}
/* Write the test string to the Map view.
*/
memcpy(lpMapViewRW, testString, strlen(testString));
/* Read from the second Map view.
*/
memcpy(results, (LPCSTR)lpMapViewRO, MAPPINGSIZE);
/* Verify the contents of the file mapping,
* by comparing what was written to what was read.
*/
if (memcmp(results, testString, strlen(testString))!= 0)
{
Trace("ERROR: MapViewOfFile not equal to file contents "
"retrieved \"%s\", expected \"%s\".\n",
results,
testString);
RetVal = FAIL;
goto CleanUpThree;
}
/* Test successful.
*/
RetVal = PASS;
CleanUpThree:
/* Unmap the view of file.
*/
if ( UnmapViewOfFile(lpMapViewRO) == FALSE )
{
Trace("ERROR:%u: Failed to UnmapViewOfFile of \"%0x%lx\".\n",
GetLastError(),
lpMapViewRO);
RetVal = FAIL;
}
CleanUpTwo:
/* Unmap the view of file.
*/
if ( UnmapViewOfFile(lpMapViewRW) == FALSE )
{
Trace("ERROR:%u: Failed to UnmapViewOfFile of \"%0x%lx\".\n",
GetLastError(),
lpMapViewRW);
RetVal = FAIL;
}
CleanUpOne:
/* Close Handle to create file mapping.
*/
if ( CloseHandle(hFileMapRW) == FALSE )
{
Trace("ERROR:%u: Failed to CloseHandle \"0x%lx\".\n",
GetLastError(),
hFileMapRW);
RetVal = FAIL;
}
/* Terminate the PAL.
*/
PAL_TerminateEx(RetVal);
return RetVal;
}
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