load_module_shlib.c

/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.1  (the "License"); you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */

/*! \file common/utils/load_module_shlib.c
 * \brief shared library loader implementation
 * \author Francois TABURET
 * \date 2017
 * \version 0.1
 * \company NOKIA BellLabs France
 * \email: francois.taburet@nokia-bell-labs.com
 * \note
 * \warning
 */
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <dlfcn.h>
#include "openair1/PHY/defs_common.h"
#define LOAD_MODULE_SHLIB_MAIN

#include "common/config/config_userapi.h"
#include "load_module_shlib.h"
void loader_init(void) {
  paramdef_t LoaderParams[] = LOADER_PARAMS_DESC;

  loader_data.mainexec_buildversion =  PACKAGE_VERSION;
  int ret = config_get( LoaderParams,sizeof(LoaderParams)/sizeof(paramdef_t),LOADER_CONFIG_PREFIX);
  if (ret <0) {
       printf("[LOADER]  configuration couldn't be performed via config module, parameters set to default values\n");
       if (loader_data.shlibpath == NULL) {
         loader_data.shlibpath=DEFAULT_PATH;
        }
       loader_data.maxshlibs = DEFAULT_MAXSHLIBS;
  }
  loader_data.shlibs = malloc(loader_data.maxshlibs * sizeof(loader_shlibdesc_t));
  if(loader_data.shlibs == NULL) {
     fprintf(stderr,"[LOADER]  %s %d memory allocation error %s\n",__FILE__, __LINE__,strerror(errno));
     exit_fun("[LOADER] unrecoverable error");
  }
  memset(loader_data.shlibs,0,loader_data.maxshlibs * sizeof(loader_shlibdesc_t));
}

/* build the full shared lib name from the module name */
char *loader_format_shlibpath(char *modname)
{

char *tmpstr;
char *shlibpath   =NULL;