diff options
| -rw-r--r-- | dex2oat/linker/oat_writer.cc | 80 |
1 files changed, 36 insertions, 44 deletions
diff --git a/dex2oat/linker/oat_writer.cc b/dex2oat/linker/oat_writer.cc index 6e8dbaf4e7..663a8896ff 100644 --- a/dex2oat/linker/oat_writer.cc +++ b/dex2oat/linker/oat_writer.cc @@ -295,46 +295,29 @@ class OatWriter::OatDexFile { // Whether to create the type lookup table. CreateTypeLookupTable create_type_lookup_table_; - // Dex file size. Initialized when copying the dex file in the - // WriteDexFile methods. + // Dex file size. Initialized when writing the dex file. size_t dex_file_size_; // Offset of start of OatDexFile from beginning of OatHeader. It is // used to validate file position when writing. size_t offset_; - ///// Start of data to write to vdex/oat file. - - const uint32_t dex_file_location_size_; - const char* const dex_file_location_data_; - - // The checksum of the dex file. Initialized when adding a DexFile - // source. + // Data to write. + uint32_t dex_file_location_size_; + const char* dex_file_location_data_; uint32_t dex_file_location_checksum_; - - // Offset of the dex file in the vdex file. Set when writing dex files in - // SeekToDexFile. uint32_t dex_file_offset_; - - // The lookup table offset in the oat file. Set in WriteTypeLookupTables. - uint32_t lookup_table_offset_; - - // Offset of dex sections that will have different runtime madvise states. - // Set in WriteDexLayoutSections. - uint32_t dex_sections_layout_offset_; - - // Class and BSS offsets set in PrepareLayout. uint32_t class_offsets_offset_; + uint32_t lookup_table_offset_; uint32_t method_bss_mapping_offset_; + uint32_t dex_sections_layout_offset_; - // Data to write to a separate section. We set the length - // of the vector in OpenDexFiles. + // Data to write to a separate section. dchecked_vector<uint32_t> class_offsets_; // Dex section layout info to serialize. DexLayoutSections dex_sections_layout_; - ///// End of data to write to vdex/oat file. private: DISALLOW_COPY_AND_ASSIGN(OatDexFile); }; @@ -481,8 +464,6 @@ bool OatWriter::AddZippedDexFilesSource(File&& zip_fd, oat_dex_files_.emplace_back(full_location, DexFileSource(zipped_dex_files_.back().get()), create_type_lookup_table); - // Override the checksum from header with the CRC from ZIP entry. - oat_dex_files_.back().dex_file_location_checksum_ = zipped_dex_files_.back()->GetCrc32(); } if (zipped_dex_file_locations_.empty()) { LOG(ERROR) << "No dex files in zip file '" << location << "': " << error_msg; @@ -3080,6 +3061,8 @@ bool OatWriter::ReadDexFileHeader(File* file, OatDexFile* oat_dex_file) { const UnalignedDexFileHeader* header = AsUnalignedDexFileHeader(raw_header); oat_dex_file->dex_file_size_ = header->file_size_; + oat_dex_file->dex_file_location_checksum_ = header->checksum_; + oat_dex_file->class_offsets_.resize(header->class_defs_size_); return true; } @@ -3260,6 +3243,8 @@ bool OatWriter::LayoutAndWriteDexFile(OutputStream* out, OatDexFile* oat_dex_fil return false; } oat_dex_file->dex_sections_layout_ = dex_layout.GetSections(); + // Set the checksum of the new oat dex file to be the original file's checksum. + oat_dex_file->dex_file_location_checksum_ = dex_file->GetLocationChecksum(); return true; } @@ -3309,7 +3294,6 @@ bool OatWriter::WriteDexFile(OutputStream* out, << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); return false; } - // Read the dex file header to get the dex file size. if (!ReadDexFileHeader(file, oat_dex_file)) { return false; } @@ -3320,6 +3304,9 @@ bool OatWriter::WriteDexFile(OutputStream* out, return false; } + // Override the checksum from header with the CRC from ZIP entry. + oat_dex_file->dex_file_location_checksum_ = dex_file->GetCrc32(); + // Seek both file and stream to the end offset. size_t end_offset = start_offset + oat_dex_file->dex_file_size_; actual_offset = lseek(file->Fd(), end_offset, SEEK_SET); @@ -3368,7 +3355,6 @@ bool OatWriter::WriteDexFile(OutputStream* out, << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); return false; } - // Read the dex file header to get the dex file size. if (!ReadDexFileHeader(dex_file, oat_dex_file)) { return false; } @@ -3435,7 +3421,10 @@ bool OatWriter::WriteDexFile(OutputStream* out, } // Update dex file size and resize class offsets in the OatDexFile. + // Note: For raw data, the checksum is passed directly to AddRawDexFileSource(). + // Note: For vdex, the checksum is copied from the existing vdex file. oat_dex_file->dex_file_size_ = header->file_size_; + oat_dex_file->class_offsets_.resize(header->class_defs_size_); return true; } @@ -3471,22 +3460,29 @@ bool OatWriter::OpenDexFiles( } std::vector<std::unique_ptr<const DexFile>> dex_files; for (OatDexFile& oat_dex_file : oat_dex_files_) { + // Make sure no one messed with input files while we were copying data. + // At the very least we need consistent file size and number of class definitions. const uint8_t* raw_dex_file = dex_files_map->Begin() + oat_dex_file.dex_file_offset_ - map_offset; - - if (kIsDebugBuild) { - // Sanity check our input files. - // Note that ValidateDexFileHeader() logs error messages. - CHECK(ValidateDexFileHeader(raw_dex_file, oat_dex_file.GetLocation())) - << "Failed to verify written dex file header!" + if (!ValidateDexFileHeader(raw_dex_file, oat_dex_file.GetLocation())) { + // Note: ValidateDexFileHeader() already logged an error message. + LOG(ERROR) << "Failed to verify written dex file header!" << " Output: " << file->GetPath() << " ~ " << std::hex << map_offset << " ~ " << static_cast<const void*>(raw_dex_file); - - const UnalignedDexFileHeader* header = AsUnalignedDexFileHeader(raw_dex_file); - CHECK_EQ(header->file_size_, oat_dex_file.dex_file_size_) - << "File size mismatch in written dex file header! Expected: " + return false; + } + const UnalignedDexFileHeader* header = AsUnalignedDexFileHeader(raw_dex_file); + if (header->file_size_ != oat_dex_file.dex_file_size_) { + LOG(ERROR) << "File size mismatch in written dex file header! Expected: " << oat_dex_file.dex_file_size_ << " Actual: " << header->file_size_ << " Output: " << file->GetPath(); + return false; + } + if (header->class_defs_size_ != oat_dex_file.class_offsets_.size()) { + LOG(ERROR) << "Class defs size mismatch in written dex file header! Expected: " + << oat_dex_file.class_offsets_.size() << " Actual: " << header->class_defs_size_ + << " Output: " << file->GetPath(); + return false; } // Now, open the dex file. @@ -3503,10 +3499,6 @@ bool OatWriter::OpenDexFiles( << " Error: " << error_msg; return false; } - - // Set the class_offsets size now that we have easy access to the DexFile and - // it has been verified in DexFileLoader::Open. - oat_dex_file.class_offsets_.resize(dex_files.back()->GetHeader().class_defs_size_); } *opened_dex_files_map = std::move(dex_files_map); @@ -3753,10 +3745,10 @@ OatWriter::OatDexFile::OatDexFile(const char* dex_file_location, dex_file_location_data_(dex_file_location), dex_file_location_checksum_(0u), dex_file_offset_(0u), - lookup_table_offset_(0u), - dex_sections_layout_offset_(0u), class_offsets_offset_(0u), + lookup_table_offset_(0u), method_bss_mapping_offset_(0u), + dex_sections_layout_offset_(0u), class_offsets_() { } |