123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778 |
- /*
- * Copyright 2013-present Facebook, Inc.
- *
- * 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 <folly/FileUtil.h>
- #include <folly/experimental/TestUtil.h>
- #include <folly/experimental/symbolizer/Elf.h>
- #include <folly/portability/GTest.h>
- using folly::symbolizer::ElfFile;
- // Add some symbols for testing. Note that we have to be careful with type
- // signatures here to prevent name mangling
- uint64_t kIntegerValue = 1234567890UL;
- const char* kStringValue = "coconuts";
- class ElfTest : public ::testing::Test {
- protected:
- ElfFile elfFile_{"/proc/self/exe"};
- };
- TEST_F(ElfTest, IntegerValue) {
- auto sym = elfFile_.getSymbolByName("kIntegerValue");
- EXPECT_NE(nullptr, sym.first) << "Failed to look up symbol kIntegerValue";
- EXPECT_EQ(kIntegerValue, elfFile_.getSymbolValue<uint64_t>(sym.second));
- }
- TEST_F(ElfTest, PointerValue) {
- auto sym = elfFile_.getSymbolByName("kStringValue");
- EXPECT_NE(nullptr, sym.first) << "Failed to look up symbol kStringValue";
- ElfW(Addr) addr = elfFile_.getSymbolValue<ElfW(Addr)>(sym.second);
- const char* str = &elfFile_.getAddressValue<const char>(addr);
- EXPECT_STREQ(kStringValue, str);
- }
- TEST_F(ElfTest, iterateProgramHeaders) {
- auto phdr = elfFile_.iterateProgramHeaders(
- [](auto& h) { return h.p_type == PT_LOAD; });
- EXPECT_NE(nullptr, phdr);
- EXPECT_GE(phdr->p_filesz, 0);
- }
- TEST_F(ElfTest, TinyNonElfFile) {
- folly::test::TemporaryFile tmpFile;
- const static folly::StringPiece contents = "!";
- folly::writeFull(tmpFile.fd(), contents.data(), contents.size());
- ElfFile elfFile;
- const char* msg = nullptr;
- auto res = elfFile.openNoThrow(tmpFile.path().c_str(), true, &msg);
- EXPECT_EQ(ElfFile::kInvalidElfFile, res);
- EXPECT_STREQ("not an ELF file (too short)", msg);
- }
- TEST_F(ElfTest, NonElfScript) {
- folly::test::TemporaryFile tmpFile;
- const static folly::StringPiece contents =
- "#!/bin/sh\necho I'm small non-ELF executable\n";
- folly::writeFull(tmpFile.fd(), contents.data(), contents.size());
- ElfFile elfFile;
- const char* msg = nullptr;
- auto res = elfFile.openNoThrow(tmpFile.path().c_str(), true, &msg);
- EXPECT_EQ(ElfFile::kInvalidElfFile, res);
- EXPECT_STREQ("invalid ELF magic", msg);
- }
|