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- /*
- * Copyright 2008 Extreme Engineering Solutions, Inc.
- *
- * mmap/munmap implementation derived from:
- * Clamav Native Windows Port : mmap win32 compatibility layer
- * Copyright (c) 2005-2006 Gianluigi Tiesi <sherpya@netfarm.it>
- * Parts by Kees Zeelenberg <kzlg@users.sourceforge.net> (LibGW32C)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this software; if not, write to the
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- #include "mingw_support.h"
- #include <stdio.h>
- #include <stdint.h>
- #include <errno.h>
- #include <io.h>
- int fsync(int fd)
- {
- return _commit(fd);
- }
- void *mmap(void *addr, size_t len, int prot, int flags, int fd, int offset)
- {
- void *map = NULL;
- HANDLE handle = INVALID_HANDLE_VALUE;
- DWORD cfm_flags = 0, mvf_flags = 0;
- switch (prot) {
- case PROT_READ | PROT_WRITE:
- cfm_flags = PAGE_READWRITE;
- mvf_flags = FILE_MAP_ALL_ACCESS;
- break;
- case PROT_WRITE:
- cfm_flags = PAGE_READWRITE;
- mvf_flags = FILE_MAP_WRITE;
- break;
- case PROT_READ:
- cfm_flags = PAGE_READONLY;
- mvf_flags = FILE_MAP_READ;
- break;
- default:
- return MAP_FAILED;
- }
- handle = CreateFileMappingA((HANDLE) _get_osfhandle(fd), NULL,
- cfm_flags, HIDWORD(len), LODWORD(len), NULL);
- if (!handle)
- return MAP_FAILED;
- map = MapViewOfFile(handle, mvf_flags, HIDWORD(offset),
- LODWORD(offset), len);
- CloseHandle(handle);
- if (!map)
- return MAP_FAILED;
- return map;
- }
- int munmap(void *addr, size_t len)
- {
- if (!UnmapViewOfFile(addr))
- return -1;
- return 0;
- }
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