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/* Copyright (c) 2003-2004, Roger Dingledine
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
* Copyright (c) 2007-2019, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* \file map_anon.h
* \brief Headers for map_anon.c
**/
#ifndef TOR_MAP_ANON_H
#define TOR_MAP_ANON_H
#include "lib/malloc/malloc.h"
#include <stddef.h>
/**
* When this flag is specified, try to prevent the mapping from being
* swapped or dumped.
*
* In some operating systems, this flag is not implemented.
*/
#define ANONMAP_PRIVATE (1u<<0)
/**
* When this flag is specified, try to prevent the mapping from being
* inherited after a fork(). In some operating systems, trying to access it
* afterwards will cause its contents to be zero. In others, trying to access
* it afterwards will cause a crash.
*
* In some operating systems, this flag is not implemented at all.
*/
#define ANONMAP_NOINHERIT (1u<<1)
void *tor_mmap_anonymous(size_t sz, unsigned flags);
void tor_munmap_anonymous(void *mapping, size_t sz);
#endif /* !defined(TOR_MAP_ANON_H) */
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