1 files changed, 140 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/filemapping_memmgt/LockFile/test1/test1.cpp b/src/pal/tests/palsuite/filemapping_memmgt/LockFile/test1/test1.cpp
new file mode 100644
index 0000000000..cee223ef81
--- /dev/null
+++ b/src/pal/tests/palsuite/filemapping_memmgt/LockFile/test1/test1.cpp
@@ -0,0 +1,140 @@
+// 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: test1.c
+**
+** Purpose: Open a file, and lock it from start to EOF.  Then create a 
+** new process, which will attempt to Read and Write from the file.  Check
+** to ensure both of these operations fail.
+**
+**
+**============================================================*/
+
+#include <palsuite.h>
+#include "../LockFile.h"
+
+#define HELPER "helper"
+
+int __cdecl main(int argc, char *argv[])
+{
+    
+    HANDLE TheFile;
+    DWORD FileStart = 0;
+    DWORD FileEnd = 0; 
+    const char lpBuffer[] = "This is a test file.";
+    DWORD bytesWritten;
+    BOOL bRc = TRUE;
+    char fileName[] = "testfile.tmp";
+    
+    if(0 != (PAL_Initialize(argc, argv)))
+    {
+        return FAIL;
+    }
+    
+    /* Important to have sharing enabled, or there is no need for the lock. */
+    TheFile = CreateFile(fileName,
+                         GENERIC_READ|GENERIC_WRITE,
+                         FILE_SHARE_READ|FILE_SHARE_WRITE,
+                         NULL,
+                         CREATE_ALWAYS,                 
+                         FILE_ATTRIBUTE_NORMAL, 
+                         NULL);
+    
+    if (TheFile == INVALID_HANDLE_VALUE) 
+    { 
+        Fail("ERROR: Could not open file '%s' with CreateFile.",fileName); 
+    } 
+
+    bRc = WriteFile(TheFile,
+                    lpBuffer,
+                    (DWORD)sizeof(lpBuffer),
+                    &bytesWritten,
+                    NULL);
+
+    if(!bRc)
+    {
+        if(CloseHandle(TheFile) == 0)
+        {
+            Fail("ERROR: CloseHandle failed to close the file.");
+        }
+        
+        Fail("ERROR: Could not write to file '%s' with WriteFile.",fileName);
+    }
+    else if(bytesWritten != (DWORD)sizeof(lpBuffer))
+    {
+        if(CloseHandle(TheFile) == 0)
+        {
+            Fail("ERROR: CloseHandle failed to close the file.");
+        }        
+        
+        Fail("ERROR: Could not write the correct number of bytes to the "
+        "file '%s' with WriteFile.",fileName);
+    }
+
+    /* Find the value for the End of the file */
+    FileEnd = SetFilePointer(TheFile,0,NULL,FILE_END);
+    
+    if(FileEnd == INVALID_SET_FILE_POINTER)
+    {
+        if(CloseHandle(TheFile) == 0)
+        {
+            Fail("ERROR: CloseHandle failed to close the file.");
+        }
+
+        Fail("ERROR: Could not set the file pointer to the end of the file "
+             "using SetFilePointer.  It returned INVALID_SET_FILE_POINTER.");
+    }
+    
+    /* Lock the file from Start to EOF */
+    
+    if(LockFile(TheFile, FileStart, 0, FileEnd, 0) == 0)
+    {
+        Trace("ERROR: LockFile failed.  GetLastError returns %d.",
+             GetLastError());
+        if(CloseHandle(TheFile) == 0)
+        {
+            Fail("ERROR: CloseHandle failed to close the file.");
+        }
+        Fail("");
+    }
+    
+    /* 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))
+    {
+        if(CloseHandle(TheFile) == 0)
+        {
+            Fail("ERROR: CloseHandle failed to close the file.");
+        }
+        
+        Fail("ERROR: The Helper program determined that the file was not "
+             "locked properly by LockFile.");
+    }
+
+    if(UnlockFile(TheFile, FileStart, 0, FileEnd, 0) == 0)
+    {
+        Trace("ERROR: UnlockFile failed.  GetLastError returns %d.",
+             GetLastError());
+        if(CloseHandle(TheFile) == 0)
+        {
+            Fail("ERROR: CloseHandle failed to close the file.");
+        }
+        Fail("");
+    }
+    
+    if(CloseHandle(TheFile) == 0)
+    {
+        Fail("ERROR: CloseHandle failed to close the file.");
+    }
+  
+    PAL_Terminate();
+    return PASS;
+}
+