]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * Copyright 2008 Extreme Engineering Solutions, Inc. | |
3 | * | |
4 | * mmap/munmap implementation derived from: | |
5 | * Clamav Native Windows Port : mmap win32 compatibility layer | |
6 | * Copyright (c) 2005-2006 Gianluigi Tiesi <sherpya@netfarm.it> | |
7 | * Parts by Kees Zeelenberg <kzlg@users.sourceforge.net> (LibGW32C) | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU Library General Public | |
11 | * License as published by the Free Software Foundation; either | |
12 | * version 2 of the License, or (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * Library General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Library General Public | |
20 | * License along with this software; if not, write to the | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
22 | */ | |
23 | ||
24 | #include "mingw_support.h" | |
25 | #include <stdio.h> | |
26 | #include <stdint.h> | |
27 | #include <errno.h> | |
28 | #include <io.h> | |
29 | ||
30 | int fsync(int fd) | |
31 | { | |
32 | return _commit(fd); | |
33 | } | |
34 | ||
35 | void *mmap(void *addr, size_t len, int prot, int flags, int fd, int offset) | |
36 | { | |
37 | void *map = NULL; | |
38 | HANDLE handle = INVALID_HANDLE_VALUE; | |
39 | DWORD cfm_flags = 0, mvf_flags = 0; | |
40 | ||
41 | switch (prot) { | |
42 | case PROT_READ | PROT_WRITE: | |
43 | cfm_flags = PAGE_READWRITE; | |
44 | mvf_flags = FILE_MAP_ALL_ACCESS; | |
45 | break; | |
46 | case PROT_WRITE: | |
47 | cfm_flags = PAGE_READWRITE; | |
48 | mvf_flags = FILE_MAP_WRITE; | |
49 | break; | |
50 | case PROT_READ: | |
51 | cfm_flags = PAGE_READONLY; | |
52 | mvf_flags = FILE_MAP_READ; | |
53 | break; | |
54 | default: | |
55 | return MAP_FAILED; | |
56 | } | |
57 | ||
58 | handle = CreateFileMappingA((HANDLE) _get_osfhandle(fd), NULL, | |
59 | cfm_flags, HIDWORD(len), LODWORD(len), NULL); | |
60 | if (!handle) | |
61 | return MAP_FAILED; | |
62 | ||
63 | map = MapViewOfFile(handle, mvf_flags, HIDWORD(offset), | |
64 | LODWORD(offset), len); | |
65 | CloseHandle(handle); | |
66 | ||
67 | if (!map) | |
68 | return MAP_FAILED; | |
69 | ||
70 | return map; | |
71 | } | |
72 | ||
73 | int munmap(void *addr, size_t len) | |
74 | { | |
75 | if (!UnmapViewOfFile(addr)) | |
76 | return -1; | |
77 | ||
78 | return 0; | |
79 | } |