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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>
    
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    #include <string.h>
    
    #include <errno.h>
    
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    #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;
    }
    
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    /* 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.
    
       This program is free software; you can redistribute it and/or modify
       it under the terms of the GNU General Public License as published by
       the Free Software Foundation; either version 2, or (at your option)
       any later version.
    
       This program 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 General Public License for more details.
    
       You should have received a copy of the GNU General Public License along
       with this program; if not, write to the Free Software Foundation,
       Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
    
    /* 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"