//

// Copyright (c) Microsoft. All rights reserved.

// Licensed under the MIT license. See LICENSE file in the project root for full license information.

//

/*++

Module Name:

common.c

Abstract:

Implementation of the common mapping functions.

--*/

#include "pal/palinternal.h"

#include "pal/dbgmsg.h"

#include "common.h"

#include <sys/mman.h>

SET_DEFAULT_DEBUG_CHANNEL(VIRTUAL);

/*****

*

* W32toUnixAccessControl( DWORD ) - Maps Win32 to Unix memory access controls .

*

*/

INT W32toUnixAccessControl( IN DWORD flProtect )

{

INT MemAccessControl = 0;

switch ( flProtect & 0xff )

{

case PAGE_READONLY :

MemAccessControl = PROT_READ;

break;

case PAGE_READWRITE :

MemAccessControl = PROT_READ | PROT_WRITE;

break;

case PAGE_EXECUTE_READWRITE:

MemAccessControl = PROT_EXEC | PROT_READ | PROT_WRITE;

break;

case PAGE_EXECUTE :

MemAccessControl = PROT_EXEC | PROT_READ; // WinAPI PAGE_EXECUTE also implies readable

break;

case PAGE_EXECUTE_READ :

MemAccessControl = PROT_EXEC | PROT_READ;

break;

case PAGE_NOACCESS :

MemAccessControl = PROT_NONE;

break;

default:

MemAccessControl = 0;

ERROR( "Incorrect or no protection flags specified.\n" );

break;

}

return MemAccessControl;

}