290 lines
8.1 KiB
C
290 lines
8.1 KiB
C
/*
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* Copyright (c) 2008, 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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* $Id: shell-file.c,v 1.14 2010/04/12 13:21:58 nvt-se Exp $
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*/
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/**
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* \file
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* File-related shell commands
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* \author
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* Adam Dunkels <adam@sics.se>
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*/
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#include "contiki.h"
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#include "shell-file.h"
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#include "cfs/cfs.h"
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#include <stdio.h>
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#include <string.h>
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#define MAX_FILENAME_LEN 40
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#define MAX_BLOCKSIZE 40
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/*---------------------------------------------------------------------------*/
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PROCESS(shell_ls_process, "ls");
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SHELL_COMMAND(ls_command,
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"ls",
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"ls: list files",
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&shell_ls_process);
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PROCESS(shell_append_process, "append");
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SHELL_COMMAND(append_command,
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"append",
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"append <filename>: append to file",
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&shell_append_process);
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PROCESS(shell_write_process, "write");
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SHELL_COMMAND(write_command,
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"write",
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"write <filename>: write to file",
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&shell_write_process);
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PROCESS(shell_read_process, "read");
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SHELL_COMMAND(read_command,
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"read",
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"read <filename> [offset] [block size]: read from a file, with the offset and the block size as options",
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&shell_read_process);
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PROCESS(shell_rm_process, "rm");
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SHELL_COMMAND(rm_command,
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"rm",
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"rm <filename>: remove the file named filename",
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&shell_rm_process);
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(shell_ls_process, ev, data)
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{
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static struct cfs_dir dir;
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static cfs_offset_t totsize;
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struct cfs_dirent dirent;
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char buf[32];
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PROCESS_BEGIN();
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if(cfs_opendir(&dir, "/") != 0) {
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shell_output_str(&ls_command, "Cannot open directory", "");
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} else {
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totsize = 0;
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while(cfs_readdir(&dir, &dirent) == 0) {
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totsize += dirent.size;
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sprintf(buf, "%lu ", (unsigned long)dirent.size);
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/* printf("'%s'\n", dirent.name);*/
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shell_output_str(&ls_command, buf, dirent.name);
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}
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cfs_closedir(&dir);
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sprintf(buf, "%lu", (unsigned long)totsize);
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shell_output_str(&ls_command, "Total size: ", buf);
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(shell_append_process, ev, data)
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{
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static int fd = 0;
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PROCESS_EXITHANDLER(cfs_close(fd));
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PROCESS_BEGIN();
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fd = cfs_open(data, CFS_WRITE | CFS_APPEND);
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if(fd < 0) {
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shell_output_str(&append_command,
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"append: could not open file for writing: ", data);
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} else {
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while(1) {
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struct shell_input *input;
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PROCESS_WAIT_EVENT_UNTIL(ev == shell_event_input);
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input = data;
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/* printf("cat input %d %d\n", input->len1, input->len2);*/
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if(input->len1 + input->len2 == 0) {
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cfs_close(fd);
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PROCESS_EXIT();
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}
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cfs_write(fd, input->data1, input->len1);
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cfs_write(fd, input->data2, input->len2);
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shell_output(&append_command,
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input->data1, input->len1,
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input->data2, input->len2);
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(shell_write_process, ev, data)
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{
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static int fd = 0;
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int r;
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PROCESS_EXITHANDLER(cfs_close(fd));
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PROCESS_BEGIN();
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fd = cfs_open(data, CFS_WRITE);
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if(fd < 0) {
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shell_output_str(&write_command,
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"write: could not open file for writing: ", data);
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} else {
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while(1) {
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struct shell_input *input;
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PROCESS_WAIT_EVENT_UNTIL(ev == shell_event_input);
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input = data;
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/* printf("cat input %d %d\n", input->len1, input->len2);*/
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if(input->len1 + input->len2 == 0) {
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cfs_close(fd);
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PROCESS_EXIT();
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}
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r = 0;
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if(input->len1 > 0) {
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r = cfs_write(fd, input->data1, input->len1);
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}
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if(r >= 0 && input->len2 > 0) {
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r = cfs_write(fd, input->data2, input->len2);
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}
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if(r < 0) {
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shell_output_str(&write_command, "write: could not write to the file",
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NULL);
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} else {
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shell_output(&write_command,
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input->data1, input->len1,
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input->data2, input->len2);
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}
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(shell_read_process, ev, data)
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{
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static int fd = 0;
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char *next;
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char filename[MAX_FILENAME_LEN];
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int len;
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int offset = 0;
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static int block_size = MAX_BLOCKSIZE;
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PROCESS_EXITHANDLER(cfs_close(fd));
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PROCESS_BEGIN();
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if(data != NULL) {
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next = strchr(data, ' ');
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if(next == NULL) {
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strncpy(filename, data, sizeof(filename));
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} else {
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len = (int)(next - (char *)data);
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if(len <= 0) {
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shell_output_str(&read_command,
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"read: filename too short: ", data);
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PROCESS_EXIT();
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}
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if(len > MAX_FILENAME_LEN) {
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shell_output_str(&read_command,
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"read: filename too long: ", data);
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PROCESS_EXIT();
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}
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memcpy(filename, data, len);
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filename[len] = 0;
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offset = shell_strtolong(next, NULL);
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next++;
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next = strchr(next, ' ');
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if(next != NULL) {
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block_size = shell_strtolong(next, NULL);
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if(block_size > MAX_BLOCKSIZE) {
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shell_output_str(&read_command,
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"read: block size too large: ", data);
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PROCESS_EXIT();
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}
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}
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}
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fd = cfs_open(filename, CFS_READ);
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cfs_seek(fd, offset, CFS_SEEK_SET);
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if(fd < 0) {
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shell_output_str(&read_command,
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"read: could not open file for reading: ", filename);
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} else {
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while(1) {
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char buf[MAX_BLOCKSIZE];
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int len;
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struct shell_input *input;
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len = cfs_read(fd, buf, block_size);
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if(len <= 0) {
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cfs_close(fd);
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PROCESS_EXIT();
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}
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shell_output(&read_command,
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buf, len, "", 0);
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process_post(&shell_read_process, PROCESS_EVENT_CONTINUE, NULL);
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PROCESS_WAIT_EVENT_UNTIL(ev == PROCESS_EVENT_CONTINUE ||
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ev == shell_event_input);
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if(ev == shell_event_input) {
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input = data;
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/* printf("cat input %d %d\n", input->len1, input->len2);*/
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if(input->len1 + input->len2 == 0) {
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cfs_close(fd);
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PROCESS_EXIT();
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}
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}
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}
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(shell_rm_process, ev, data)
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{
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PROCESS_BEGIN();
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if(data != NULL) {
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cfs_remove(data);
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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void
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shell_file_init(void)
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{
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shell_register_command(&ls_command);
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shell_register_command(&write_command);
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shell_register_command(&append_command);
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shell_register_command(&read_command);
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shell_register_command(&rm_command);
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}
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/*---------------------------------------------------------------------------*/
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