/apps/shell/shell-exec.c
C | 138 lines | 83 code | 13 blank | 42 comment | 12 complexity | e419a40987420482ac6e383433084aec MD5 | raw file
- /*
- * Copyright (c) 2008, 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.
- *
- */
- /**
- * \file
- * A brief description of what this file is.
- * \author
- * Adam Dunkels <adam@sics.se>
- */
- #include "contiki.h"
- #include "shell-exec.h"
- #include "loader/elfloader.h"
- #include <stdio.h>
- #include <string.h>
- /*---------------------------------------------------------------------------*/
- PROCESS(shell_exec_process, "exec");
- SHELL_COMMAND(exec_command,
- "exec",
- "exec <filename>: load and execute the ELF file filename",
- &shell_exec_process);
- /*---------------------------------------------------------------------------*/
- PROCESS_THREAD(shell_exec_process, ev, data)
- {
- char *name;
- int fd;
- PROCESS_BEGIN();
- name = data;
- if(name == NULL || strlen(name) == 0) {
- shell_output_str(&exec_command,
- "exec <file>: filename must be given", "");
- PROCESS_EXIT();
- }
- /* Kill any old processes. */
- if(elfloader_autostart_processes != NULL) {
- autostart_exit(elfloader_autostart_processes);
- }
- fd = cfs_open(name, CFS_READ | CFS_WRITE);
- if(fd < 0) {
- shell_output_str(&exec_command,
- "exec: could not open ", name);
- } else {
- int ret;
- char *print, *symbol;
- ret = elfloader_load(fd);
- cfs_close(fd);
- symbol = "";
- switch(ret) {
- case ELFLOADER_OK:
- print = "OK";
- break;
- case ELFLOADER_BAD_ELF_HEADER:
- print = "Bad ELF header";
- break;
- case ELFLOADER_NO_SYMTAB:
- print = "No symbol table";
- break;
- case ELFLOADER_NO_STRTAB:
- print = "No string table";
- break;
- case ELFLOADER_NO_TEXT:
- print = "No text segment";
- break;
- case ELFLOADER_SYMBOL_NOT_FOUND:
- print = "Symbol not found: ";
- symbol = elfloader_unknown;
- break;
- case ELFLOADER_SEGMENT_NOT_FOUND:
- print = "Segment not found: ";
- symbol = elfloader_unknown;
- break;
- case ELFLOADER_NO_STARTPOINT:
- print = "No starting point";
- break;
- default:
- print = "Unknown return code from the ELF loader (internal bug)";
- break;
- }
- shell_output_str(&exec_command, print, symbol);
- if(ret == ELFLOADER_OK) {
- int i;
- for(i = 0; elfloader_autostart_processes[i] != NULL; ++i) {
- shell_output_str(&exec_command, "exec: starting process ",
- elfloader_autostart_processes[i]->name);
- }
- autostart_start(elfloader_autostart_processes);
- }
- }
- PROCESS_END();
- }
- /*---------------------------------------------------------------------------*/
- void
- shell_exec_init(void)
- {
- elfloader_init();
- shell_register_command(&exec_command);
- }
- /*---------------------------------------------------------------------------*/