| // Copyright (C) 2016 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 |
| // |
| // 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. |
| |
| #include "abi_diff.h" |
| |
| #include <fstream> |
| |
| #include <llvm/Support/CommandLine.h> |
| #include <llvm/Support/FileSystem.h> |
| #include <llvm/Support/raw_ostream.h> |
| |
| static llvm::cl::OptionCategory header_checker_category( |
| "header-abi-diff options"); |
| |
| static llvm::cl::opt<std::string> compatibility_report( |
| "o", llvm::cl::desc("<compatibility report>"), llvm::cl::Required, |
| llvm::cl::cat(header_checker_category)); |
| |
| static llvm::cl::opt<std::string> lib_name( |
| "lib", llvm::cl::desc("<lib name>"), llvm::cl::Required, |
| llvm::cl::cat(header_checker_category)); |
| |
| static llvm::cl::opt<std::string> arch( |
| "arch", llvm::cl::desc("<arch>"), llvm::cl::Required, |
| llvm::cl::cat(header_checker_category)); |
| |
| static llvm::cl::opt<std::string> new_dump( |
| "new", llvm::cl::desc("<new dump>"), llvm::cl::Required, |
| llvm::cl::cat(header_checker_category)); |
| |
| static llvm::cl::opt<std::string> old_dump( |
| "old", llvm::cl::desc("<old dump>"), llvm::cl::Required, |
| llvm::cl::cat(header_checker_category)); |
| |
| static llvm::cl::opt<std::string> ignore_symbol_list( |
| "ignore-symbols", llvm::cl::desc("ignore symbols"), llvm::cl::Optional, |
| llvm::cl::cat(header_checker_category)); |
| |
| static llvm::cl::opt<bool> advice_only( |
| "advice-only", llvm::cl::desc("Advisory mode only"), llvm::cl::Optional, |
| llvm::cl::cat(header_checker_category)); |
| |
| static llvm::cl::opt<bool> check_all_apis( |
| "check-all-apis", |
| llvm::cl::desc("All apis, whether referenced or not, by exported symbols in" |
| " the dynsym table of a shared library are checked"), |
| llvm::cl::Optional, llvm::cl::cat(header_checker_category)); |
| |
| static llvm::cl::opt<bool> suppress_local_warnings( |
| "suppress_local_warnings", llvm::cl::desc("suppress local warnings"), |
| llvm::cl::Optional, llvm::cl::cat(header_checker_category)); |
| |
| static llvm::cl::opt<bool> allow_extensions( |
| "allow-extensions", |
| llvm::cl::desc("Do not return a non zero status on extensions"), |
| llvm::cl::Optional, llvm::cl::cat(header_checker_category)); |
| |
| static llvm::cl::opt<bool> allow_unreferenced_changes( |
| "allow-unreferenced-changes", |
| llvm::cl::desc("Do not return a non zero status on changes to data" |
| " structures which are not directly referenced by exported" |
| " APIs."), |
| llvm::cl::Optional, llvm::cl::cat(header_checker_category)); |
| |
| static std::set<std::string> LoadIgnoredSymbols(std::string &symbol_list_path) { |
| std::ifstream symbol_ifstream(symbol_list_path); |
| std::set<std::string> ignored_symbols; |
| if (!symbol_ifstream) { |
| llvm::errs() << "Failed to open file containing symbols to ignore\n"; |
| ::exit(1); |
| } |
| std::string line = ""; |
| while (std::getline(symbol_ifstream, line)) { |
| ignored_symbols.insert(line); |
| } |
| return ignored_symbols; |
| } |
| |
| int main(int argc, const char **argv) { |
| GOOGLE_PROTOBUF_VERIFY_VERSION; |
| llvm::cl::ParseCommandLineOptions(argc, argv, "header-checker"); |
| std::set<std::string> ignored_symbols; |
| if (llvm::sys::fs::exists(ignore_symbol_list)) { |
| ignored_symbols = LoadIgnoredSymbols(ignore_symbol_list); |
| } |
| HeaderAbiDiff judge(lib_name, arch, old_dump, new_dump, compatibility_report, |
| ignored_symbols, check_all_apis); |
| |
| abi_util::CompatibilityStatusIR status = judge.GenerateCompatibilityReport(); |
| |
| std::string status_str = ""; |
| std::string unreferenced_change_str = ""; |
| std::string error_or_warning_str = "\033[36;1mwarning: \033[0m"; |
| |
| if (status == abi_util::CompatibilityStatusIR::Incompatible) { |
| error_or_warning_str = "\033[31;1merror: \033[0m"; |
| status_str = " INCOMPATIBLE CHANGES"; |
| } else if (status & abi_util::CompatibilityStatusIR::Extension) { |
| status_str = "EXTENDING CHANGES"; |
| } |
| if (status & abi_util::CompatibilityStatusIR::UnreferencedChanges) { |
| unreferenced_change_str = ", changes in exported headers, which are"; |
| unreferenced_change_str += " not directly referenced by exported symbols."; |
| unreferenced_change_str += " This MIGHT be an ABI breaking change due to"; |
| unreferenced_change_str += " internal typecasts."; |
| |
| } |
| if (!suppress_local_warnings && status) { |
| llvm::errs() << "******************************************************\n" |
| << error_or_warning_str |
| << "VNDK library: " |
| << lib_name |
| << "'s ABI has " |
| << status_str |
| << unreferenced_change_str |
| << " Please check compatiblity report at : " |
| << compatibility_report << "\n" |
| << "******************************************************\n"; |
| } |
| |
| if ((allow_extensions && |
| (status & abi_util::CompatibilityStatusIR::Extension)) || |
| (allow_unreferenced_changes && |
| (status & abi_util::CompatibilityStatusIR::UnreferencedChanges))) { |
| return abi_util::CompatibilityStatusIR::Compatible; |
| } |
| |
| if (advice_only) { |
| return abi_util::CompatibilityStatusIR::Compatible; |
| } |
| |
| return status; |
| } |