LXR uboot/tools/mingw

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright 2008 Extreme Engineering Solutions, Inc.
   4 *
   5 * mmap/munmap implementation derived from:
   6 * Clamav Native Windows Port : mmap win32 compatibility layer
   7 * Copyright (c) 2005-2006 Gianluigi Tiesi <sherpya@netfarm.it>
   8 * Parts by Kees Zeelenberg <kzlg@users.sourceforge.net> (LibGW32C)
   9 */
  10
  11#include "mingw_support.h"
  12#include <stdio.h>
  13#include <stdint.h>
  14#include <string.h>
  15#include <errno.h>
  16#include <assert.h>
  17#include <io.h>
  18
  19int fsync(int fd)
  20{
  21        return _commit(fd);
  22}
  23
  24void *mmap(void *addr, size_t len, int prot, int flags, int fd, int offset)
  25{
  26        void *map = NULL;
  27        HANDLE handle = INVALID_HANDLE_VALUE;
  28        DWORD cfm_flags = 0, mvf_flags = 0;
  29
  30        switch (prot) {
  31        case PROT_READ | PROT_WRITE:
  32                cfm_flags = PAGE_READWRITE;
  33                mvf_flags = FILE_MAP_ALL_ACCESS;
  34                break;
  35        case PROT_WRITE:
  36                cfm_flags = PAGE_READWRITE;
  37                mvf_flags = FILE_MAP_WRITE;
  38                break;
  39        case PROT_READ:
  40                cfm_flags = PAGE_READONLY;
  41                mvf_flags = FILE_MAP_READ;
  42                break;
  43        default:
  44                return MAP_FAILED;
  45        }
  46
  47        handle = CreateFileMappingA((HANDLE) _get_osfhandle(fd), NULL,
  48                                cfm_flags, HIDWORD(len), LODWORD(len), NULL);
  49        if (!handle)
  50                return MAP_FAILED;
  51
  52        map = MapViewOfFile(handle, mvf_flags, HIDWORD(offset),
  53                        LODWORD(offset), len);
  54        CloseHandle(handle);
  55
  56        if (!map)
  57                return MAP_FAILED;
  58
  59        return map;
  60}
  61
  62int munmap(void *addr, size_t len)
  63{
  64        if (!UnmapViewOfFile(addr))
  65                return -1;
  66
  67        return 0;
  68}
  69
  70/* Reentrant string tokenizer.  Generic version.
  71   Copyright (C) 1991,1996-1999,2001,2004,2007 Free Software Foundation, Inc.
  72   This file is part of the GNU C Library.
  73 */
  74
  75/* Parse S into tokens separated by characters in DELIM.
  76   If S is NULL, the saved pointer in SAVE_PTR is used as
  77   the next starting point.  For example:
  78        char s[] = "-abc-=-def";
  79        char *sp;
  80        x = strtok_r(s, "-", &sp);      // x = "abc", sp = "=-def"
  81        x = strtok_r(NULL, "-=", &sp);  // x = "def", sp = NULL
  82        x = strtok_r(NULL, "=", &sp);   // x = NULL
  83                // s = "abc\0-def\0"
  84*/
  85char *strtok_r(char *s, const char *delim, char **save_ptr)
  86{
  87        char *token;
  88
  89        if (s == NULL)
  90                s = *save_ptr;
  91
  92        /* Scan leading delimiters.  */
  93        s += strspn(s, delim);
  94        if (*s == '\0') {
  95                *save_ptr = s;
  96                return NULL;
  97        }
  98
  99        /* Find the end of the token.  */
 100        token = s;
 101        s = strpbrk (token, delim);
 102        if (s == NULL) {
 103                /* This token finishes the string.  */
 104                *save_ptr = memchr(token, '\0', strlen(token));
 105        } else {
 106                /* Terminate the token and make *SAVE_PTR point past it.  */
 107                *s = '\0';
 108                *save_ptr = s + 1;
 109        }
 110        return token;
 111}
 112
 113#include "getline.c"
 114