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2f8d396b PT |
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 <[email protected]> | |
7 | * Parts by Kees Zeelenberg <[email protected]> (LibGW32C) | |
8 | * | |
a53002f4 | 9 | * SPDX-License-Identifier: LGPL-2.0+ |
2f8d396b PT |
10 | */ |
11 | ||
12 | #include "mingw_support.h" | |
13 | #include <stdio.h> | |
14 | #include <stdint.h> | |
faf36c14 | 15 | #include <string.h> |
2f8d396b | 16 | #include <errno.h> |
faf36c14 | 17 | #include <assert.h> |
2f8d396b PT |
18 | #include <io.h> |
19 | ||
20 | int fsync(int fd) | |
21 | { | |
22 | return _commit(fd); | |
23 | } | |
24 | ||
25 | void *mmap(void *addr, size_t len, int prot, int flags, int fd, int offset) | |
26 | { | |
27 | void *map = NULL; | |
28 | HANDLE handle = INVALID_HANDLE_VALUE; | |
29 | DWORD cfm_flags = 0, mvf_flags = 0; | |
30 | ||
31 | switch (prot) { | |
32 | case PROT_READ | PROT_WRITE: | |
33 | cfm_flags = PAGE_READWRITE; | |
34 | mvf_flags = FILE_MAP_ALL_ACCESS; | |
35 | break; | |
36 | case PROT_WRITE: | |
37 | cfm_flags = PAGE_READWRITE; | |
38 | mvf_flags = FILE_MAP_WRITE; | |
39 | break; | |
40 | case PROT_READ: | |
41 | cfm_flags = PAGE_READONLY; | |
42 | mvf_flags = FILE_MAP_READ; | |
43 | break; | |
44 | default: | |
45 | return MAP_FAILED; | |
46 | } | |
47 | ||
48 | handle = CreateFileMappingA((HANDLE) _get_osfhandle(fd), NULL, | |
49 | cfm_flags, HIDWORD(len), LODWORD(len), NULL); | |
50 | if (!handle) | |
51 | return MAP_FAILED; | |
52 | ||
53 | map = MapViewOfFile(handle, mvf_flags, HIDWORD(offset), | |
54 | LODWORD(offset), len); | |
55 | CloseHandle(handle); | |
56 | ||
57 | if (!map) | |
58 | return MAP_FAILED; | |
59 | ||
60 | return map; | |
61 | } | |
62 | ||
63 | int munmap(void *addr, size_t len) | |
64 | { | |
65 | if (!UnmapViewOfFile(addr)) | |
66 | return -1; | |
67 | ||
68 | return 0; | |
69 | } | |
faf36c14 RB |
70 | |
71 | /* Reentrant string tokenizer. Generic version. | |
72 | Copyright (C) 1991,1996-1999,2001,2004,2007 Free Software Foundation, Inc. | |
73 | This file is part of the GNU C Library. | |
74 | ||
1a459660 WD |
75 | * SPDX-License-Identifier: GPL-2.0+ |
76 | */ | |
faf36c14 RB |
77 | |
78 | /* Parse S into tokens separated by characters in DELIM. | |
79 | If S is NULL, the saved pointer in SAVE_PTR is used as | |
80 | the next starting point. For example: | |
81 | char s[] = "-abc-=-def"; | |
82 | char *sp; | |
83 | x = strtok_r(s, "-", &sp); // x = "abc", sp = "=-def" | |
84 | x = strtok_r(NULL, "-=", &sp); // x = "def", sp = NULL | |
85 | x = strtok_r(NULL, "=", &sp); // x = NULL | |
86 | // s = "abc\0-def\0" | |
87 | */ | |
88 | char *strtok_r(char *s, const char *delim, char **save_ptr) | |
89 | { | |
90 | char *token; | |
91 | ||
92 | if (s == NULL) | |
93 | s = *save_ptr; | |
94 | ||
95 | /* Scan leading delimiters. */ | |
96 | s += strspn(s, delim); | |
97 | if (*s == '\0') { | |
98 | *save_ptr = s; | |
99 | return NULL; | |
100 | } | |
101 | ||
102 | /* Find the end of the token. */ | |
103 | token = s; | |
104 | s = strpbrk (token, delim); | |
105 | if (s == NULL) { | |
106 | /* This token finishes the string. */ | |
107 | *save_ptr = memchr(token, '\0', strlen(token)); | |
108 | } else { | |
109 | /* Terminate the token and make *SAVE_PTR point past it. */ | |
110 | *s = '\0'; | |
111 | *save_ptr = s + 1; | |
112 | } | |
113 | return token; | |
114 | } | |
115 | ||
64b15021 | 116 | #include "getline.c" |