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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.
*/
#include "hivex.h"
#include "hivex-internal.h"
#include "mmap.h"
#include <windows.h>
#include <io.h>
void *
hivex__rpl_mmap (hive_h *h,
void *p_addr, size_t len, int prot, int flags, int fd, off_t offset)
{
void *p_map;
// Check parameters for unsupported values
if (p_addr != NULL)
return MAP_FAILED;
if (prot != PROT_READ)
return MAP_FAILED;
if (flags != MAP_SHARED)
return MAP_FAILED;
// Create file mapping
h->p_winmap = CreateFileMapping ((HANDLE)_get_osfhandle(fd),
NULL, PAGE_READONLY, 0, 0, NULL);
if (h->p_winmap == NULL)
return MAP_FAILED;
// Create map view
p_map = MapViewOfFile (h->p_winmap, FILE_MAP_READ, 0, 0, len);
if (p_map == NULL) {
CloseHandle (h->p_winmap);
return MAP_FAILED;
}
return p_map;
}
int
hivex__rpl_munmap (hive_h *h, void *p_addr, size_t len)
{
if (p_addr == NULL || h->p_winmap == NULL)
return -1;
// Close map view
if (UnmapViewOfFile (p_addr) == 0)
return -1;
// Close file mapping
if (CloseHandle (h->p_winmap) == 0)
return -1;
h->p_winmap = NULL;
return 0;
}
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