138 lines
4.2 KiB
C
138 lines
4.2 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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*/
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/**
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* \file
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* A brief description of what this file is.
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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-exec.h"
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#include "loader/elfloader.h"
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#include <stdio.h>
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#include <string.h>
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/*---------------------------------------------------------------------------*/
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PROCESS(shell_exec_process, "exec");
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SHELL_COMMAND(exec_command,
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"exec",
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"exec <filename>: load and execute the ELF file filename",
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&shell_exec_process);
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(shell_exec_process, ev, data)
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{
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char *name;
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int fd;
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PROCESS_BEGIN();
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name = data;
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if(name == NULL || strlen(name) == 0) {
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shell_output_str(&exec_command,
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"exec <file>: filename must be given", "");
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PROCESS_EXIT();
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}
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/* Kill any old processes. */
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if(elfloader_autostart_processes != NULL) {
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autostart_exit(elfloader_autostart_processes);
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}
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fd = cfs_open(name, CFS_READ | CFS_WRITE);
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if(fd < 0) {
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shell_output_str(&exec_command,
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"exec: could not open ", name);
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} else {
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int ret;
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char *print, *symbol;
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ret = elfloader_load(fd);
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cfs_close(fd);
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symbol = "";
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switch(ret) {
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case ELFLOADER_OK:
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print = "OK";
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break;
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case ELFLOADER_BAD_ELF_HEADER:
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print = "Bad ELF header";
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break;
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case ELFLOADER_NO_SYMTAB:
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print = "No symbol table";
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break;
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case ELFLOADER_NO_STRTAB:
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print = "No string table";
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break;
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case ELFLOADER_NO_TEXT:
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print = "No text segment";
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break;
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case ELFLOADER_SYMBOL_NOT_FOUND:
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print = "Symbol not found: ";
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symbol = elfloader_unknown;
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break;
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case ELFLOADER_SEGMENT_NOT_FOUND:
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print = "Segment not found: ";
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symbol = elfloader_unknown;
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break;
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case ELFLOADER_NO_STARTPOINT:
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print = "No starting point";
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break;
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default:
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print = "Unknown return code from the ELF loader (internal bug)";
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break;
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}
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shell_output_str(&exec_command, print, symbol);
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if(ret == ELFLOADER_OK) {
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int i;
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for(i = 0; elfloader_autostart_processes[i] != NULL; ++i) {
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shell_output_str(&exec_command, "exec: starting process ",
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elfloader_autostart_processes[i]->name);
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}
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autostart_start(elfloader_autostart_processes);
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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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void
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shell_exec_init(void)
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{
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elfloader_init();
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shell_register_command(&exec_command);
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}
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/*---------------------------------------------------------------------------*/
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