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tools/mingw_support.c
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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)
*
* SPDX-License-Identifier: LGPL-2.0+
*/
#include "mingw_support.h"
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <errno.h>
#include <assert.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;
}
/* Reentrant string tokenizer. Generic version.
Copyright (C) 1991,1996-1999,2001,2004,2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
* SPDX-License-Identifier: GPL-2.0+
*/
/* Parse S into tokens separated by characters in DELIM.
If S is NULL, the saved pointer in SAVE_PTR is used as
the next starting point. For example:
char s[] = "-abc-=-def";
char *sp;
x = strtok_r(s, "-", &sp); // x = "abc", sp = "=-def"
x = strtok_r(NULL, "-=", &sp); // x = "def", sp = NULL
x = strtok_r(NULL, "=", &sp); // x = NULL
// s = "abc\0-def\0"
*/
char *strtok_r(char *s, const char *delim, char **save_ptr)
{
char *token;
if (s == NULL)
s = *save_ptr;
/* Scan leading delimiters. */
s += strspn(s, delim);
if (*s == '\0') {
*save_ptr = s;
return NULL;
}
/* Find the end of the token. */
token = s;
s = strpbrk (token, delim);
if (s == NULL) {
/* This token finishes the string. */
*save_ptr = memchr(token, '\0', strlen(token));
} else {
/* Terminate the token and make *SAVE_PTR point past it. */
*s = '\0';
*save_ptr = s + 1;
}
return token;
}
#include "getline.c"
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