1 /** 2 * Copyright (c) 2021-2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #include "os/library_loader.h" 17 18 #include <dlfcn.h> 19 #include <iosfwd> 20 #include <string> 21 #include <string_view> 22 23 #include "os/error.h" 24 #include "utils/expected.h" 25 26 namespace panda::os::library_loader { Load(std::string_view filename)27Expected<LibraryHandle, Error> Load(std::string_view filename) 28 { 29 void *handle = dlopen(filename.data(), RTLD_LAZY); 30 if (handle != nullptr) { 31 return LibraryHandle(handle); 32 } 33 char *msg = dlerror(); 34 return msg != nullptr ? Unexpected(Error(msg)) : Unexpected(Error("no error message")); 35 } 36 } // namespace panda::os::library_loader 37