49 std::ostream& operator<<(std::ostream& os, const ElfStatus& status) {  in operator <<()
51     case ElfStatus::NO_ERROR:  in operator <<()
54     case ElfStatus::FILE_NOT_FOUND:  in operator <<()
57     case ElfStatus::READ_FAILED:  in operator <<()
60     case ElfStatus::FILE_MALFORMED:  in operator <<()
63     case ElfStatus::NO_SYMBOL_TABLE:  in operator <<()
66     case ElfStatus::NO_BUILD_ID:  in operator <<()
69     case ElfStatus::BUILD_ID_MISMATCH:  in operator <<()
72     case ElfStatus::SECTION_NOT_FOUND:  in operator <<()
84 ElfStatus IsValidElfFile(int fd, uint64_t file_offset) {  in IsValidElfFile()
87     return ElfStatus::READ_FAILED;  in IsValidElfFile()
89   return IsValidElfFileMagic(buf, 4) ? ElfStatus::NO_ERROR : ElfStatus::FILE_MALFORMED;  in IsValidElfFile()
122 ElfStatus GetBuildIdFromNoteFile(const std::string& filename, BuildId* build_id) {  in GetBuildIdFromNoteFile()
125     return ElfStatus::READ_FAILED;  in GetBuildIdFromNoteFile()
128     return ElfStatus::NO_BUILD_ID;  in GetBuildIdFromNoteFile()
130   return ElfStatus::NO_ERROR;  in GetBuildIdFromNoteFile()
149 static ElfStatus OpenObjectFile(const std::string& filename, uint64_t file_offset,  in OpenObjectFile()
152     return ElfStatus::FILE_NOT_FOUND;  in OpenObjectFile()
156     return ElfStatus::READ_FAILED;  in OpenObjectFile()
161       return ElfStatus::READ_FAILED;  in OpenObjectFile()
164   ElfStatus status = IsValidElfFile(fd, file_offset);  in OpenObjectFile()
165   if (status != ElfStatus::NO_ERROR) {  in OpenObjectFile()
170     return ElfStatus::READ_FAILED;  in OpenObjectFile()
174     return ElfStatus::READ_FAILED;  in OpenObjectFile()
180     return ElfStatus::FILE_MALFORMED;  in OpenObjectFile()
182   return ElfStatus::NO_ERROR;  in OpenObjectFile()
185 static ElfStatus OpenObjectFileInMemory(const char* data, size_t size, BinaryWrapper* wrapper) {  in OpenObjectFileInMemory()
189     return ElfStatus::FILE_MALFORMED;  in OpenObjectFileInMemory()
195     return ElfStatus::FILE_MALFORMED;  in OpenObjectFileInMemory()
197   return ElfStatus::NO_ERROR;  in OpenObjectFileInMemory()
358   ElfStatus GetBuildId(BuildId* build_id) override {  in GetBuildId()
366           return ElfStatus::READ_FAILED;  in GetBuildId()
369           return ElfStatus::NO_BUILD_ID;  in GetBuildId()
372           return ElfStatus::NO_ERROR;  in GetBuildId()
376     return ElfStatus::NO_BUILD_ID;  in GetBuildId()
379   ElfStatus ParseSymbols(const ParseSymbolCallback& callback) override {  in ParseSymbols()
391       return ElfStatus::NO_ERROR;  in ParseSymbols()
398     ElfStatus result = ReadSection(".gnu_debugdata", &debugdata);  in ParseSymbols()
399     if (result == ElfStatus::SECTION_NOT_FOUND) {  in ParseSymbols()
400       return ElfStatus::NO_SYMBOL_TABLE;  in ParseSymbols()
401     } else if (result == ElfStatus::NO_ERROR) {  in ParseSymbols()
421   ElfStatus ReadSection(const std::string& section_name, std::string* content) override {  in ReadSection()
431         return ElfStatus::READ_FAILED;  in ReadSection()
434       return ElfStatus::NO_ERROR;  in ReadSection()
436     return ElfStatus::SECTION_NOT_FOUND;  in ReadSection()
476 std::unique_ptr<ElfFile> CreateElfFileImpl(BinaryWrapper&& wrapper, ElfStatus* status) {  in CreateElfFileImpl()
485   *status = ElfStatus::FILE_MALFORMED;  in CreateElfFileImpl()
492   ElfStatus status;  in Open()
501                                        const BuildId* expected_build_id, ElfStatus* status) {  in Open()
507       *status = ElfStatus::FILE_NOT_FOUND;  in Open()
518       *status = ElfStatus::FILE_NOT_FOUND;  in Open()
526   if (*status != ElfStatus::NO_ERROR) {  in Open()
533     if (*status != ElfStatus::NO_ERROR) {  in Open()
537       *status = ElfStatus::BUILD_ID_MISMATCH;  in Open()
544 std::unique_ptr<ElfFile> ElfFile::Open(const char* data, size_t size, ElfStatus* status) {  in Open()
547   if (*status != ElfStatus::NO_ERROR) {  in Open()