147 lines
4.3 KiB
C
147 lines
4.3 KiB
C
/*
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* Copyright (c) 2006, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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* $Id: cfs-cooja.c,v 1.5 2007/11/17 18:28:23 adamdunkels Exp $
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*/
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#include <string.h>
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#include "lib/simEnvChange.h"
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#include "cfs/cfs.h"
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#define FLAG_FILE_CLOSED 0
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#define FLAG_FILE_OPEN 1
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struct filestate {
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char flag;
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int fileptr;
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};
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static struct filestate file;
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const struct simInterface cfs_interface;
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// COOJA variables
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#define CFS_BUF_SIZE 60*1024
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char simCFSData[CFS_BUF_SIZE] = { 0 };
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char simCFSChanged = 0;
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int simCFSRead = 0;
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int simCFSWritten = 0;
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/*---------------------------------------------------------------------------*/
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int
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cfs_open(const char *n, int f)
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{
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if(file.flag == FLAG_FILE_CLOSED) {
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file.flag = FLAG_FILE_OPEN;
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file.fileptr = 0;
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return 1;
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} else {
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return -1;
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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cfs_close(int f)
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{
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file.flag = FLAG_FILE_CLOSED;
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}
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/*---------------------------------------------------------------------------*/
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int
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cfs_read(int f, void *buf, unsigned int len)
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{
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if(f == FLAG_FILE_OPEN) {
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// TODO Should yield a few times?
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memcpy(buf, &simCFSData[0] + file.fileptr, len);
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file.fileptr += len;
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simCFSChanged = 1;
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simCFSRead += len;
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return len;
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} else {
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return -1;
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}
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}
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/*---------------------------------------------------------------------------*/
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int
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cfs_write(int f, void *buf, unsigned int len)
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{
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if(f == FLAG_FILE_OPEN) {
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// TODO Should yield a few times?
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memcpy(&simCFSData[0] + file.fileptr, buf, len);
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file.fileptr += len;
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simCFSChanged = 1;
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simCFSWritten += len;
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return len;
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} else {
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return -1;
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}
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}
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/*---------------------------------------------------------------------------*/
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int
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cfs_seek(int f, unsigned int o)
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{
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if(f == FLAG_FILE_OPEN) {
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file.fileptr = o;
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return o;
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} else {
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return -1;
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}
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}
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/*---------------------------------------------------------------------------*/
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int
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cfs_opendir(struct cfs_dir *p, const char *n)
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{
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return 1;
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}
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/*---------------------------------------------------------------------------*/
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int
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cfs_readdir(struct cfs_dir *p, struct cfs_dirent *e)
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{
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return 1;
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}
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/*---------------------------------------------------------------------------*/
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int
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cfs_closedir(struct cfs_dir *p)
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{
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return 1;
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}
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/*---------------------------------------------------------------------------*/
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static void
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doInterfaceActionsBeforeTick(void)
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{
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}
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/*---------------------------------------------------------------------------*/
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static void
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doInterfaceActionsAfterTick(void)
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{
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}
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/*---------------------------------------------------------------------------*/
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SIM_INTERFACE(cfs_interface,
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doInterfaceActionsBeforeTick,
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doInterfaceActionsAfterTick);
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/*---------------------------------------------------------------------------*/
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