| /* |
| * 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-posix.c,v 1.4 2005/04/10 19:23:06 oliverschmidt Exp $ |
| */ |
| #include "contiki.h" |
| |
| #include "cfs.h" |
| #include "cfs-service.h" |
| |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <sys/types.h> |
| #include <sys/uio.h> |
| #include <sys/types.h> |
| #include <dirent.h> |
| #include <string.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 ": POSIX", EK_PRIO_NORMAL, |
| eventhandler, NULL, (void *)&interface); |
| |
| struct cfs_posix_dir { |
| DIR *dirp; |
| }; |
| |
| /*---------------------------------------------------------------------------*/ |
| EK_PROCESS_INIT(cfs_posix_init, arg) |
| { |
| arg_free(arg); |
| ek_service_start(CFS_SERVICE_NAME, &proc); |
| } |
| /*---------------------------------------------------------------------------*/ |
| EK_EVENTHANDLER(eventhandler, ev, data) |
| { |
| switch(ev) { |
| case EK_EVENT_INIT: |
| 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) |
| { |
| char filename[255]; |
| sprintf(filename, "cfs-root/%s", n); |
| if(f == CFS_READ) { |
| return open(filename, O_RDONLY); |
| } else { |
| return open(filename, O_CREAT|O_TRUNC|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) |
| { |
| struct cfs_posix_dir *dir = (struct cfs_posix_dir *)p; |
| char dirname[255]; |
| |
| if(n == NULL) { |
| n = ""; |
| } |
| sprintf(dirname, "cfs-root/%s", n); |
| |
| dir->dirp = opendir(dirname); |
| |
| return dir->dirp == NULL; |
| } |
| /*---------------------------------------------------------------------------*/ |
| static int |
| s_readdir(struct cfs_dir *p, struct cfs_dirent *e) |
| { |
| struct cfs_posix_dir *dir = (struct cfs_posix_dir *)p; |
| struct dirent *res; |
| int ret; |
| |
| res = readdir(dir->dirp); |
| if(res == NULL) { |
| return 1; |
| } |
| strncpy(e->name, res->d_name, sizeof(e->name)); |
| e->size = 0; |
| return 0; |
| } |
| /*---------------------------------------------------------------------------*/ |
| static int |
| s_closedir(struct cfs_dir *p) |
| { |
| struct cfs_posix_dir *dir = (struct cfs_posix_dir *)p; |
| closedir(dir->dirp); |
| return 1; |
| } |
| /*---------------------------------------------------------------------------*/ |