112 lines
3.5 KiB
C
112 lines
3.5 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.0 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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/*! \file common/utils/load_module_shlib.c
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* \brief shared library loader implementation
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* \author Francois TABURET
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* \date 2017
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* \version 0.1
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* \company NOKIA BellLabs France
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* \email: francois.taburet@nokia-bell-labs.com
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* \note
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* \warning
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*/
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#define _GNU_SOURCE
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <dlfcn.h>
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#include "openair1/PHY/defs.h"
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#define LOAD_MODULE_SHLIB_MAIN
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#include "common/config/config_userapi.h"
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#include "load_module_shlib.h"
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void loader_init(void) {
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paramdef_t LoaderParams[] = LOADER_PARAMS_DESC;
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int ret = config_get( LoaderParams,sizeof(LoaderParams)/sizeof(paramdef_t),LOADER_CONFIG_PREFIX);
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if (ret <0) {
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fprintf(stderr,"[LOADER] configuration couldn't be performed");
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if (loader_data.shlibpath == NULL) {
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loader_data.shlibpath=DEFAULT_PATH;
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}
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return;
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}
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}
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int load_module_shlib(char *modname,loader_shlibfunc_t *farray, int numf)
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{
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void *lib_handle;
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initfunc_t fpi;
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char *tmpstr;
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int ret=0;
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if (loader_data.shlibpath == NULL) {
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loader_init();
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}
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tmpstr = malloc(strlen(loader_data.shlibpath)+strlen(modname)+16);
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if (tmpstr == NULL) {
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fprintf(stderr,"[LOADER] %s %d malloc error loading module %s, %s\n",__FILE__, __LINE__, modname, strerror(errno));
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return -1;
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}
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if(loader_data.shlibpath[0] != 0) {
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ret=sprintf(tmpstr,"%s/",loader_data.shlibpath);
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}
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if(strstr(modname,".so") == NULL) {
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sprintf(tmpstr+ret,"lib%s.so",modname);
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} else {
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sprintf(tmpstr+ret,"%s",modname);
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}
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ret = 0;
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lib_handle = dlopen(tmpstr, RTLD_LAZY|RTLD_NODELETE|RTLD_GLOBAL);
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if (!lib_handle) {
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fprintf(stderr,"[LOADER] library %s is not loaded: %s\n", tmpstr,dlerror());
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ret = -1;
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} else {
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printf("[LOADER] library %s uccessfully loaded loaded\n", tmpstr);
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sprintf(tmpstr,"%s_autoinit",modname);
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fpi = dlsym(lib_handle,tmpstr);
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if (fpi != NULL )
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{
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fpi();
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}
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if (farray != NULL) {
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for (int i=0; i<numf; i++) {
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farray[i].fptr = dlsym(lib_handle,farray[i].fname);
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if (farray[i].fptr == NULL ) {
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fprintf(stderr,"[LOADER] %s %d %s function not found %s\n",__FILE__, __LINE__, dlerror(),farray[i].fname);
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ret= -1;
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}
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} /* for int i... */
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} /* farray ! NULL */
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}
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if (tmpstr != NULL) free(tmpstr);
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if (lib_handle != NULL) dlclose(lib_handle);
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return ret;
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}
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