nes-proj/core/cfs/cfs.c

77 lines
3.0 KiB
C

/*
* Copyright (c) 2004, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
* Author: Adam Dunkels <adam@sics.se>
*
* $Id: cfs.c,v 1.1 2006/06/17 22:41:15 adamdunkels Exp $
*/
#include "contiki.h"
#include "cfs/cfs.h"
#include "cfs/cfs-service.h"
static int null_open(const char *n, int f) {return -1;}
static void null_close(int f) {return;}
static int null_read(int f, char *b, unsigned int l) {return -1;}
static int null_write(int f, char *b, unsigned int l) {return -1;}
static int null_seek(int fd, unsigned int l) {return -1;}
static int null_opendir(struct cfs_dir *p, const char *n) {return -1;}
static int null_readdir(struct cfs_dir *p, struct cfs_dirent *e) {return -1;}
static int null_closedir(struct cfs_dir *p) {return -1;}
SERVICE(cfs_nullservice, cfs_service,
{
null_open,
null_close,
null_read,
null_write,
null_seek,
null_opendir,
null_readdir,
null_closedir
});
/*---------------------------------------------------------------------------*/
struct cfs_service_interface *
cfs_find_service(void)
{
struct service *s;
s = service_find(cfs_service_name);
if(s != NULL) {
return s->interface;
} else {
return cfs_nullservice.interface;
}
}
/*---------------------------------------------------------------------------*/