nes-proj/core/loader/dlloader.c

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/*
* Copyright (c) 2005, 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.
*
*/
#include <dlfcn.h>
#include <stddef.h>
#include <stdio.h>
#include "contiki.h"
/*---------------------------------------------------------------------------*/
int
dlloader_load(char *path, char *arg)
{
void *handle;
struct process **p;
/* Load and link the program. */
handle = dlopen(path, RTLD_NOW);
printf("Loading '%s'\n", path);
if(handle == NULL) {
printf("dlloader_load: loading failed: %s\n", dlerror());
return LOADER_ERR_FMT;
}
/* Find the processes to be started from the loaded program. */
p = dlsym(handle, "autostart_processes");
if(p == NULL) {
printf("dlloader_load: could not find symbol 'autostart_processes'\n");
return LOADER_ERR_FMT;
}
/* Start the process. */
printf("Starting '%s'\n", PROCESS_NAME_STRING(*p));
process_start(*p, (void *)arg);
return LOADER_OK;
}
/*---------------------------------------------------------------------------*/