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Splitted POSIX based cfs implementation to avoid pulling in potentially large POSIX directory I/O functions without needing them at all.

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oliverschmidt 2007-12-21 01:36:01 +00:00
parent 102e3e2a24
commit 0564cc50fd
5 changed files with 90 additions and 48 deletions
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core/cfs/cfs-posix-dir.c Normal file
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/*
* 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-dir.c,v 1.1 2007/12/21 01:36:01 oliverschmidt Exp $
*/
#include <stdio.h>
#include <dirent.h>
#include <string.h>
#include "cfs/cfs.h"
struct cfs_posix_dir {
DIR *dirp;
};
/*---------------------------------------------------------------------------*/
int
cfs_opendir(struct cfs_dir *p, const char *n)
{
struct cfs_posix_dir *dir = (struct cfs_posix_dir *)p;
dir->dirp = opendir(n);
return dir->dirp == NULL;
}
/*---------------------------------------------------------------------------*/
int
cfs_readdir(struct cfs_dir *p, struct cfs_dirent *e)
{
struct cfs_posix_dir *dir = (struct cfs_posix_dir *)p;
struct dirent *res;
if(dir->dirp == NULL) {
return -1;
}
res = readdir(dir->dirp);
if(res == NULL) {
return -1;
}
strncpy(e->name, res->d_name, sizeof(e->name));
e->size = 0;
return 0;
}
/*---------------------------------------------------------------------------*/
void
cfs_closedir(struct cfs_dir *p)
{
struct cfs_posix_dir *dir = (struct cfs_posix_dir *)p;
if(dir->dirp != NULL) {
closedir(dir->dirp);
}
}
/*---------------------------------------------------------------------------*/