1 files changed, 71 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/filemapping_memmgt/LockFile/test3/test3.cpp b/src/pal/tests/palsuite/filemapping_memmgt/LockFile/test3/test3.cpp
new file mode 100644
index 0000000000..78662c5685
--- /dev/null
+++ b/src/pal/tests/palsuite/filemapping_memmgt/LockFile/test3/test3.cpp
@@ -0,0 +1,71 @@
+// 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: test3.c
+**
+** Purpose: Open a file, lock a region in the middle.  Create a new process
+** and attempt to read and write directly before and after that region, which
+** should succeed.  Also, check to see that reading/writing in the locked
+** region fails.
+**
+**
+**============================================================*/
+
+#include <palsuite.h>
+#include "../LockFile.h"
+
+#define HELPER "helper"
+#define FILENAME "testfile.txt"
+
+int __cdecl main(int argc, char *argv[])
+{
+    
+    HANDLE TheFile = NULL;
+    DWORD FileStart = 0;
+    DWORD FileEnd = 0;
+    char* WriteBuffer = "12345678901234567890123456"; 
+    
+    if(0 != (PAL_Initialize(argc, argv)))
+    {
+        return FAIL;
+    }
+    
+    /* Call the helper function to Create a file, write 'WriteBuffer' to
+       the file, and lock the file.
+    */
+    
+    FileEnd = strlen(WriteBuffer);
+    TheFile = CreateAndLockFile(TheFile,FILENAME, WriteBuffer, 
+                                FileStart+3, FileEnd-6);
+    
+    
+    /* Launch another process, which will attempt to read and write from
+       the locked file.
+       
+       If the helper program returns 1, then the test fails. More 
+       specific errors are given by the Helper file itself.
+    */
+    if(RunHelper(HELPER))
+    {
+        Fail("ERROR: The Helper program determined that the file was not "
+             "locked properly by LockFile.");
+    }
+
+    if(UnlockFile(TheFile, FileStart+3, 0, FileEnd-6, 0) == 0)
+    {
+        Fail("ERROR: UnlockFile failed.  GetLastError returns %d.",
+             GetLastError());
+    }
+    
+    if(CloseHandle(TheFile) == 0)
+    {
+        Fail("ERROR: CloseHandle failed to close the file. "
+             "GetLastError() returned %d.",GetLastError());
+    }
+    
+    PAL_Terminate();
+    return PASS;
+}