src/coreclr/src/pal/tests/palsuite/filemapping_memmgt/CreateFileMappingA/test7/createfilemapping.cpp

   1 // Licensed to the .NET Foundation under one or more agreements.
   2 // The .NET Foundation licenses this file to you under the MIT license.
   3
   4 /*=============================================================
   5 **
   6 ** Source:  createfilemapping.c (test 7)
   7 **
   8 ** Purpose: Positive test the CreateFileMapping API.
   9 **          Test CreateFileMapping to a "swap" handle with
  10 **          access PAGE_READWRITE.
  11 **
  12 **
  13 **============================================================*/
  14 #include <palsuite.h>
  15
  16 const   int MAPPINGSIZE = 2048;
  17 HANDLE  SWAP_HANDLE     = ((VOID *)(-1));
  18
  19 int __cdecl main(int argc, char *argv[])
  20 {
  21     char    testString[] = "this is a test string";
  22     char    lpObjectName[] = "myMappingObject";
  23     char    results[2048];
  24     int     RetVal = PASS;
  25
  26     HANDLE hFileMapRW;
  27     LPVOID lpMapViewRW;
  28     LPVOID lpMapViewRO;
  29
  30     /* Initialize the PAL environment.
  31      */
  32     if(0 != PAL_Initialize(argc, argv))
  33     {
  34         return FAIL;
  35     }
  36
  37     /* Initialize the buffers.
  38      */
  39     memset(results,  0, MAPPINGSIZE);
  40
  41     /* Create a named file-mapping object with file handle FileHandle
  42      * and with PAGE_READWRITE protection.
  43     */
  44     hFileMapRW = CreateFileMapping(
  45                             SWAP_HANDLE,
  46                             NULL,               /*not inherited*/
  47                             PAGE_READWRITE,     /*read write*/
  48                             0,                  /*high-order size*/
  49                             MAPPINGSIZE,        /*low-order size*/
  50                             lpObjectName);      /*unnamed object*/
  51
  52     if(NULL == hFileMapRW)
  53     {
  54         Fail("ERROR:%u: Failed to create File Mapping.\n",
  55              GetLastError());
  56     }
  57
  58     /* Create a map view to the READWRITE file mapping.
  59      */
  60     lpMapViewRW = MapViewOfFile(
  61                             hFileMapRW,
  62                             FILE_MAP_ALL_ACCESS,/* access code */
  63                             0,                  /* high order offset*/
  64                             0,                  /* low order offset*/
  65                             MAPPINGSIZE);       /* number of bytes for map */
  66
  67     if(NULL == lpMapViewRW)
  68     {
  69         Trace("ERROR:%u: Failed to call MapViewOfFile "
  70               "API to map a view of file!\n",
  71               GetLastError());
  72         RetVal = FAIL;
  73         goto CleanUpOne;
  74     }
  75
  76
  77     /* Create a map view to the READWRITE file mapping.
  78      */
  79     lpMapViewRO = MapViewOfFile(
  80                             hFileMapRW,
  81                             FILE_MAP_READ,        /* access code */
  82                             0,                    /* high order offset*/
  83                             0,                    /* low order offset*/
  84                             MAPPINGSIZE);         /* number of bytes for map */
  85
  86     if(NULL == lpMapViewRO)
  87     {
  88         Trace("ERROR:%u: Failed to call MapViewOfFile "
  89               "API to map a view of file!\n",
  90               GetLastError());
  91         RetVal = FAIL;
  92         goto CleanUpTwo;
  93     }
  94
  95     /* Write the test string to the Map view.
  96     */
  97     memcpy(lpMapViewRW, testString, strlen(testString));
  98
  99     /* Read from the second Map view.
 100     */
 101     memcpy(results, (LPCSTR)lpMapViewRO, MAPPINGSIZE);
 102
 103     /* Verify the contents of the file mapping,
 104      * by comparing what was written to what was read.
 105      */
 106     if (memcmp(results, testString, strlen(testString))!= 0)
 107     {
 108         Trace("ERROR: MapViewOfFile not equal to file contents "
 109               "retrieved \"%s\", expected \"%s\".\n",
 110               results,
 111               testString);
 112         RetVal = FAIL;
 113         goto CleanUpThree;
 114     }
 115
 116     /* Test successful.
 117      */
 118     RetVal = PASS;
 119
 120 CleanUpThree:
 121
 122     /* Unmap the view of file.
 123      */
 124     if ( UnmapViewOfFile(lpMapViewRO) == FALSE )
 125     {
 126         Trace("ERROR:%u: Failed to UnmapViewOfFile of \"%0x%lx\".\n",
 127                 GetLastError(),
 128                 lpMapViewRO);
 129         RetVal = FAIL;
 130     }
 131
 132 CleanUpTwo:
 133
 134     /* Unmap the view of file.
 135      */
 136     if ( UnmapViewOfFile(lpMapViewRW) == FALSE )
 137     {
 138         Trace("ERROR:%u: Failed to UnmapViewOfFile of \"%0x%lx\".\n",
 139                 GetLastError(),
 140                 lpMapViewRW);
 141         RetVal = FAIL;
 142     }
 143
 144
 145 CleanUpOne:
 146
 147     /* Close Handle to create file mapping.
 148      */
 149     if ( CloseHandle(hFileMapRW) == FALSE )
 150     {
 151         Trace("ERROR:%u: Failed to CloseHandle \"0x%lx\".\n",
 152                 GetLastError(),
 153                 hFileMapRW);
 154         RetVal = FAIL;
 155     }
 156
 157
 158     /* Terminate the PAL.
 159      */
 160     PAL_TerminateEx(RetVal);
 161     return RetVal;
 162 }
 163