3191a2568c
1. Introduced a cfs_offset_t type that designates file offsets. unsigned int was insufficient on several platforms with non-volatile storage that exceed the capacity of unsigned int. 2. Switched cfs_seek signature to POSIX style with a "whence" parameter.
107 lines
3.2 KiB
C
107 lines
3.2 KiB
C
/*
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* Copyright (c) 2004, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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* $Id: cfs-posix.c,v 1.13 2009/02/27 14:25:38 nvt-se Exp $
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*/
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#include <stdio.h>
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#include <fcntl.h>
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#ifdef _MSC_VER
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#include <io.h>
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#else
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#include <unistd.h>
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#endif
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#include "cfs/cfs.h"
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/*---------------------------------------------------------------------------*/
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int
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cfs_open(const char *n, int f)
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{
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int s = 0;
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if(f == CFS_READ) {
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s = O_RDONLY;
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} else if(f & CFS_WRITE) {
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s = O_CREAT;
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if(f & CFS_READ) {
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s |= O_RDWR;
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} else {
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s |= O_WRONLY;
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}
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if(f & CFS_APPEND) {
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s |= O_APPEND;
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} else {
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s |= O_TRUNC;
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}
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}
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return open(n, s);
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}
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/*---------------------------------------------------------------------------*/
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void
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cfs_close(int f)
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{
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close(f);
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}
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/*---------------------------------------------------------------------------*/
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int
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cfs_read(int f, void *b, unsigned int l)
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{
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return read(f, b, l);
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}
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/*---------------------------------------------------------------------------*/
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int
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cfs_write(int f, const void *b, unsigned int l)
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{
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return write(f, b, l);
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}
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/*---------------------------------------------------------------------------*/
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cfs_offset_t
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cfs_seek(int f, unsigned int o, int w)
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{
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if(w == CFS_SEEK_SET) {
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w = SEEK_SET;
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} else if(w == CFS_SEEK_CUR) {
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w = SEEK_CUR;
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} else if(w == CFS_SEEK_END) {
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w = SEEK_END;
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} else {
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return (cfs_offset_t)-1;
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}
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return lseek(f, o, w);
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}
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/*---------------------------------------------------------------------------*/
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int
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cfs_remove(const char *name)
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{
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return remove(name);
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}
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/*---------------------------------------------------------------------------*/
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