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/* mmap replacement for mingw.
*
* Copyright (C) 2011 by Daniel Gillen <gillen (dot) dan (at) pinguin (dot) lu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
#ifndef HIVEX_MMAP_H_
#define HIVEX_MMAP_H_
#include <stdlib.h>
#include <sys/types.h>
#include "hivex.h"
#include "hivex-internal.h"
/* Hack to pass the hive handle to the replacement mmap and munmap
* functions. XXX
*/
#define mmap(a,b,c,d,e,f) hivex__rpl_mmap(h,(a),(b),(c),(d),(e),(f))
#define munmap(a,b) hivex__rpl_munmap(h,(a),(b))
// Supported map protections.
#define PROT_READ 0x1 /* Page can be read. */
// Supported sharing types (must choose one and only one of these).
#define MAP_SHARED 0x01 /* Share changes. */
// Value that is returned when mapping failed
#define MAP_FAILED NULL
/*
* hivex replacement mmap
*
* Parameters:
* h : Hive handle
* void *p_addr : Preferred starting address for the mapping. Unsupported
* and must be NULL.
* size_t len : Mapping length (From offset to offset+len-1).
* int prot : Flags that control what kind of access is permitted.
* Must be PROT_READ.
* int flags : Flags that control the nature of the map. Must be
* MAP_SHARED.
* int fd : File descriptor of file to be mapped.
* off_t offset : Mapping offset.
*
* Returns:
* Map address on success or MAP_FAILED on error.
*/
extern void *hivex__rpl_mmap (hive_h *h, void *p_addr, size_t len, int prot, int flags, int fd, off_t offset);
/*
* hivex replacement munmap
*
* Parameters:
* h : Hive handle
* void *p_addr : Startaddress of mapping created with mmap
* size_t len : Lenght of mapping to be unmapped. Unsupported. The whole
* mapping will always be unmapped.
*
* Returns:
* 0 on success or -1 on error.
*/
extern int hivex__rpl_munmap (hive_h *h, void *p_addr, size_t len);
#endif /* HIVEX_MMAP_H_ */
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