contiki-apple2/lib/cfs.h

/*
 * 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.h,v 1.3 2005/04/18 21:41:07 oliverschmidt Exp $
 */
#ifndef __CFS_H__
#define __CFS_H__

#include <fcntl.h>
#include <unistd.h>

#define CFS_READ  (O_RDONLY)
#define CFS_WRITE (O_WRONLY | O_CREAT | O_TRUNC)

#define cfs_open  open
#define cfs_close close
#define cfs_read  read
#define cfs_write write

struct cfs_dir {
  int fd;
  unsigned char entry_length;
  unsigned char entries_per_block;
  unsigned char current_entry;
  union {
    unsigned char bytes[512];
    struct {
      unsigned prev_block;
      unsigned next_block;
      char entries[1];
    } content;
  } block;
};

struct cfs_dirent {
  char name[16];
  unsigned int size;
};

int cfs_opendir(struct cfs_dir *dirp, const char *name);
int cfs_readdir(struct cfs_dir *dirp, struct cfs_dirent *dirent);
int cfs_closedir(struct cfs_dir *dirp);

#endif /* __CFS_H__ */