nes-proj/platform/c64/loader/cfs-cbm-posix.c

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/*
* Copyright (c) 2004, Adam Dunkels.
* 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-cbm-posix.c,v 1.1 2006/06/17 22:41:26 adamdunkels Exp $
*/
#include "contiki.h"
#include "log.h"
#include "cfs.h"
#include "cfs-service.h"
#include <cbm.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
static int s_open(const char *n, int f);
static void s_close(int f);
static int s_read(int f, char *b, unsigned int l);
static int s_write(int f, char *b, unsigned int l);
static int s_opendir(struct cfs_dir *p, const char *n);
static int s_readdir(struct cfs_dir *p, struct cfs_dirent *e);
static int s_closedir(struct cfs_dir *p);
static const struct cfs_service_interface interface =
{
CFS_SERVICE_VERSION,
s_open,
s_close,
s_read,
s_write,
s_opendir,
s_readdir,
s_closedir
};
EK_EVENTHANDLER(eventhandler, ev, data);
EK_PROCESS(proc, CFS_SERVICE_NAME ": KERNAL", EK_PRIO_NORMAL,
eventhandler, NULL, (void *)&interface);
/*---------------------------------------------------------------------------*/
LOADER_INIT_FUNC(cfs_cbm_init, arg)
{
arg_free(arg);
ek_service_start(CFS_SERVICE_NAME, &proc);
}
/*---------------------------------------------------------------------------*/
EK_EVENTHANDLER(eventhandler, ev, data)
{
switch(ev) {
case EK_EVENT_INIT:
case EK_EVENT_REPLACE:
log_message("Starting KERNAL CFS", "");
break;
case EK_EVENT_REQUEST_REPLACE:
ek_replace((struct ek_proc *)data, &interface);
break;
case EK_EVENT_REQUEST_EXIT:
ek_exit();
break;
}
}
/*---------------------------------------------------------------------------*/
static int
s_open(const char *n, int f)
{
if(f == CFS_READ) {
return open(n, O_RDONLY);
} else {
return open(n, O_CREAT|O_RDWR);
}
}
/*---------------------------------------------------------------------------*/
static void
s_close(int f)
{
close(f);
}
/*---------------------------------------------------------------------------*/
static int
s_read(int f, char *b, unsigned int l)
{
return read(f, b, l);
}
/*---------------------------------------------------------------------------*/
static int
s_write(int f, char *b, unsigned int l)
{
return write(f, b, l);
}
/*---------------------------------------------------------------------------*/
static int
s_opendir(struct cfs_dir *p, const char *n)
{
return cbm_opendir(4, 8);
}
/*---------------------------------------------------------------------------*/
static int
s_readdir(struct cfs_dir *p, struct cfs_dirent *e)
{
struct cbm_dirent ce;
int ret;
ret = cbm_readdir(4, &ce);
strncpy(e->name, ce.name, sizeof(ce.name));
e->size = ce.size;
return ret;
}
/*---------------------------------------------------------------------------*/
static int
s_closedir(struct cfs_dir *p)
{
cbm_closedir(4);
return 1;
}
/*---------------------------------------------------------------------------*/