1 /* 2 * Copyright 2018 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "utils.hpp" 18 19 #include "fs.hpp" 20 21 #include <dlfcn.h> 22 23 #include <blobs-ipmid/manager.hpp> 24 #include <memory> 25 #include <phosphor-logging/log.hpp> 26 #include <regex> 27 #include <string> 28 #include <vector> 29 30 namespace blobs 31 { 32 33 using namespace phosphor::logging; 34 35 bool matchBlobHandler(const std::string& filename) 36 { 37 return std::regex_match(filename, std::regex(".+\\.so\\.\\d+$")); 38 } 39 40 void loadLibraries(ManagerInterface* manager, const std::string& path, 41 const internal::DlSysInterface* sys) 42 { 43 void* libHandle = NULL; 44 HandlerFactory factory; 45 46 std::vector<std::string> libs = getLibraryList(path, matchBlobHandler); 47 48 for (const auto& p : libs) 49 { 50 libHandle = sys->dlopen(p.c_str(), RTLD_NOW | RTLD_GLOBAL); 51 if (!libHandle) 52 { 53 log<level::ERR>("ERROR opening", entry("HANDLER=%s", p.c_str()), 54 entry("ERROR=%s", sys->dlerror())); 55 continue; 56 } 57 58 sys->dlerror(); /* Clear any previous error. */ 59 60 factory = reinterpret_cast<HandlerFactory>( 61 sys->dlsym(libHandle, "createHandler")); 62 63 const char* error = sys->dlerror(); 64 if (error) 65 { 66 log<level::ERR>("ERROR loading symbol", 67 entry("HANDLER=%s", p.c_str()), 68 entry("ERROR=%s", error)); 69 continue; 70 } 71 72 std::unique_ptr<GenericBlobInterface> result = factory(); 73 if (!result) 74 { 75 log<level::ERR>("Unable to create handler", 76 entry("HANDLER=%s", p.c_str())); 77 continue; 78 } 79 80 manager->registerHandler(std::move(result)); 81 } 82 } 83 84 } // namespace blobs 85