blob: 95c4db89233f729bcda34f407ef36d4e611e42aa [file] [log] [blame]
Peter Tyser2f8d3962009-03-13 18:54:51 -05001/*
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 *
Wolfgang Denka53002f2013-07-08 11:58:49 +02009 * SPDX-License-Identifier: LGPL-2.0+
Peter Tyser2f8d3962009-03-13 18:54:51 -050010 */
11
12#include "mingw_support.h"
13#include <stdio.h>
14#include <stdint.h>
Remy Bohmerfaf36c12009-10-28 22:13:36 +010015#include <string.h>
Peter Tyser2f8d3962009-03-13 18:54:51 -050016#include <errno.h>
Remy Bohmerfaf36c12009-10-28 22:13:36 +010017#include <assert.h>
Peter Tyser2f8d3962009-03-13 18:54:51 -050018#include <io.h>
19
20int fsync(int fd)
21{
22 return _commit(fd);
23}
24
25void *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
63int munmap(void *addr, size_t len)
64{
65 if (!UnmapViewOfFile(addr))
66 return -1;
67
68 return 0;
69}
Remy Bohmerfaf36c12009-10-28 22:13:36 +010070
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
Wolfgang Denk1a459662013-07-08 09:37:19 +020075 * SPDX-License-Identifier: GPL-2.0+
76 */
Remy Bohmerfaf36c12009-10-28 22:13:36 +010077
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*/
88char *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
Mike Frysinger64b15022010-01-08 02:48:03 -0500116#include "getline.c"