| /* |
| * Copyright (C) 2014 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 "patchoat.h" |
| |
| #include <openssl/sha.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <sys/file.h> |
| #include <sys/stat.h> |
| #include <unistd.h> |
| |
| #include <string> |
| #include <vector> |
| |
| #include "android-base/file.h" |
| #include "android-base/stringprintf.h" |
| #include "android-base/strings.h" |
| |
| #include "art_field-inl.h" |
| #include "art_method-inl.h" |
| #include "base/dumpable.h" |
| #include "base/file_utils.h" |
| #include "base/leb128.h" |
| #include "base/logging.h" // For InitLogging. |
| #include "base/mutex.h" |
| #include "base/memory_tool.h" |
| #include "base/os.h" |
| #include "base/scoped_flock.h" |
| #include "base/stringpiece.h" |
| #include "base/unix_file/fd_file.h" |
| #include "base/unix_file/random_access_file_utils.h" |
| #include "base/utils.h" |
| #include "class_root.h" |
| #include "elf_file.h" |
| #include "elf_file_impl.h" |
| #include "elf_utils.h" |
| #include "gc/space/image_space.h" |
| #include "image-inl.h" |
| #include "intern_table.h" |
| #include "mirror/dex_cache.h" |
| #include "mirror/executable.h" |
| #include "mirror/method.h" |
| #include "mirror/object-inl.h" |
| #include "mirror/object-refvisitor-inl.h" |
| #include "mirror/reference.h" |
| #include "noop_compiler_callbacks.h" |
| #include "offsets.h" |
| #include "runtime.h" |
| #include "scoped_thread_state_change-inl.h" |
| #include "thread.h" |
| |
| namespace art { |
| |
| using android::base::StringPrintf; |
| |
| namespace { |
| |
| static const OatHeader* GetOatHeader(const ElfFile* elf_file) { |
| uint64_t off = 0; |
| if (!elf_file->GetSectionOffsetAndSize(".rodata", &off, nullptr)) { |
| return nullptr; |
| } |
| |
| OatHeader* oat_header = reinterpret_cast<OatHeader*>(elf_file->Begin() + off); |
| return oat_header; |
| } |
| |
| static File* CreateOrOpen(const char* name) { |
| if (OS::FileExists(name)) { |
| return OS::OpenFileReadWrite(name); |
| } else { |
| std::unique_ptr<File> f(OS::CreateEmptyFile(name)); |
| if (f.get() != nullptr) { |
| if (fchmod(f->Fd(), 0644) != 0) { |
| PLOG(ERROR) << "Unable to make " << name << " world readable"; |
| unlink(name); |
| return nullptr; |
| } |
| } |
| return f.release(); |
| } |
| } |
| |
| // Either try to close the file (close=true), or erase it. |
| static bool FinishFile(File* file, bool close) { |
| if (close) { |
| if (file->FlushCloseOrErase() != 0) { |
| PLOG(ERROR) << "Failed to flush and close file."; |
| return false; |
| } |
| return true; |
| } else { |
| file->Erase(); |
| return false; |
| } |
| } |
| |
| static bool SymlinkFile(const std::string& input_filename, const std::string& output_filename) { |
| if (input_filename == output_filename) { |
| // Input and output are the same, nothing to do. |
| return true; |
| } |
| |
| // Unlink the original filename, since we are overwriting it. |
| unlink(output_filename.c_str()); |
| |
| // Create a symlink from the source file to the target path. |
| if (symlink(input_filename.c_str(), output_filename.c_str()) < 0) { |
| PLOG(ERROR) << "Failed to create symlink " << output_filename << " -> " << input_filename; |
| return false; |
| } |
| |
| if (kIsDebugBuild) { |
| LOG(INFO) << "Created symlink " << output_filename << " -> " << input_filename; |
| } |
| |
| return true; |
| } |
| |
| // Holder class for runtime options and related objects. |
| class PatchoatRuntimeOptionsHolder { |
| public: |
| PatchoatRuntimeOptionsHolder(const std::string& image_location, InstructionSet isa) { |
| options_.push_back(std::make_pair("compilercallbacks", &callbacks_)); |
| img_ = "-Ximage:" + image_location; |
| options_.push_back(std::make_pair(img_.c_str(), nullptr)); |
| isa_name_ = GetInstructionSetString(isa); |
| options_.push_back(std::make_pair("imageinstructionset", |
| reinterpret_cast<const void*>(isa_name_.c_str()))); |
| options_.push_back(std::make_pair("-Xno-sig-chain", nullptr)); |
| // We do not want the runtime to attempt to patch the image. |
| options_.push_back(std::make_pair("-Xnorelocate", nullptr)); |
| // Don't try to compile. |
| options_.push_back(std::make_pair("-Xnoimage-dex2oat", nullptr)); |
| // Do not accept broken image. |
| options_.push_back(std::make_pair("-Xno-dex-file-fallback", nullptr)); |
| } |
| |
| const RuntimeOptions& GetRuntimeOptions() { |
| return options_; |
| } |
| |
| private: |
| RuntimeOptions options_; |
| NoopCompilerCallbacks callbacks_; |
| std::string isa_name_; |
| std::string img_; |
| }; |
| |
| } // namespace |
| |
| bool PatchOat::GeneratePatch( |
| const MemMap& original, |
| const MemMap& relocated, |
| std::vector<uint8_t>* output, |
| std::string* error_msg) { |
| // FORMAT of the patch (aka image relocation) file: |
| // * SHA-256 digest (32 bytes) of original/unrelocated file (e.g., the one from /system) |
| // * List of monotonically increasing offsets (max value defined by uint32_t) at which relocations |
| // occur. |
| // Each element is represented as the delta from the previous offset in the list (first element |
| // is a delta from 0). Each delta is encoded using unsigned LEB128: little-endian |
| // variable-length 7 bits per byte encoding, where all bytes have the highest bit (0x80) set |
| // except for the final byte which does not have that bit set. For example, 0x3f is offset 0x3f, |
| // whereas 0xbf 0x05 is offset (0x3f & 0x7f) | (0x5 << 7) which is 0x2bf. Most deltas end up |
| // being encoding using just one byte, achieving ~4x decrease in relocation file size compared |
| // to the encoding where offsets are stored verbatim, as uint32_t. |
| |
| size_t original_size = original.Size(); |
| size_t relocated_size = relocated.Size(); |
| if (original_size != relocated_size) { |
| *error_msg = |
| StringPrintf( |
| "Original and relocated image sizes differ: %zu vs %zu", original_size, relocated_size); |
| return false; |
| } |
| if ((original_size % 4) != 0) { |
| *error_msg = StringPrintf("Image size not multiple of 4: %zu", original_size); |
| return false; |
| } |
| if (original_size > UINT32_MAX) { |
| *error_msg = StringPrintf("Image too large: %zu" , original_size); |
| return false; |
| } |
| |
| const ImageHeader& relocated_header = |
| *reinterpret_cast<const ImageHeader*>(relocated.Begin()); |
| // Offsets are supposed to differ between original and relocated by this value |
| off_t expected_diff = relocated_header.GetPatchDelta(); |
| if (expected_diff == 0) { |
| // Can't identify offsets which are supposed to differ due to relocation |
| *error_msg = "Relocation delta is 0"; |
| return false; |
| } |
| |
| // Output the SHA-256 digest of the original |
| output->resize(SHA256_DIGEST_LENGTH); |
| const uint8_t* original_bytes = original.Begin(); |
| SHA256(original_bytes, original_size, output->data()); |
| |
| // Output the list of offsets at which the original and patched images differ |
| size_t last_diff_offset = 0; |
| size_t diff_offset_count = 0; |
| const uint8_t* relocated_bytes = relocated.Begin(); |
| for (size_t offset = 0; offset < original_size; offset += 4) { |
| uint32_t original_value = *reinterpret_cast<const uint32_t*>(original_bytes + offset); |
| uint32_t relocated_value = *reinterpret_cast<const uint32_t*>(relocated_bytes + offset); |
| off_t diff = relocated_value - original_value; |
| if (diff == 0) { |
| continue; |
| } else if (diff != expected_diff) { |
| *error_msg = |
| StringPrintf( |
| "Unexpected diff at offset %zu. Expected: %jd, but was: %jd", |
| offset, |
| (intmax_t) expected_diff, |
| (intmax_t) diff); |
| return false; |
| } |
| |
| uint32_t offset_diff = offset - last_diff_offset; |
| last_diff_offset = offset; |
| diff_offset_count++; |
| |
| EncodeUnsignedLeb128(output, offset_diff); |
| } |
| |
| if (diff_offset_count == 0) { |
| *error_msg = "Original and patched images are identical"; |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static bool WriteRelFile( |
| const MemMap& original, |
| const MemMap& relocated, |
| const std::string& rel_filename, |
| std::string* error_msg) { |
| std::vector<uint8_t> output; |
| if (!PatchOat::GeneratePatch(original, relocated, &output, error_msg)) { |
| return false; |
| } |
| |
| std::unique_ptr<File> rel_file(OS::CreateEmptyFileWriteOnly(rel_filename.c_str())); |
| if (rel_file.get() == nullptr) { |
| *error_msg = StringPrintf("Failed to create/open output file %s", rel_filename.c_str()); |
| return false; |
| } |
| if (!rel_file->WriteFully(output.data(), output.size())) { |
| *error_msg = StringPrintf("Failed to write to %s", rel_filename.c_str()); |
| return false; |
| } |
| if (rel_file->FlushCloseOrErase() != 0) { |
| *error_msg = StringPrintf("Failed to flush and close %s", rel_filename.c_str()); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static bool CheckImageIdenticalToOriginalExceptForRelocation( |
| const std::string& relocated_filename, |
| const std::string& original_filename, |
| std::string* error_msg) { |
| *error_msg = ""; |
| std::string rel_filename = original_filename + ".rel"; |
| std::unique_ptr<File> rel_file(OS::OpenFileForReading(rel_filename.c_str())); |
| if (rel_file.get() == nullptr) { |
| *error_msg = StringPrintf("Failed to open image relocation file %s", rel_filename.c_str()); |
| return false; |
| } |
| int64_t rel_size = rel_file->GetLength(); |
| if (rel_size < 0) { |
| *error_msg = StringPrintf("Error while getting size of image relocation file %s", |
| rel_filename.c_str()); |
| return false; |
| } |
| std::unique_ptr<uint8_t[]> rel(new uint8_t[rel_size]); |
| if (!rel_file->ReadFully(rel.get(), rel_size)) { |
| *error_msg = StringPrintf("Failed to read image relocation file %s", rel_filename.c_str()); |
| return false; |
| } |
| |
| std::unique_ptr<File> image_file(OS::OpenFileForReading(relocated_filename.c_str())); |
| if (image_file.get() == nullptr) { |
| *error_msg = StringPrintf("Unable to open relocated image file %s", |
| relocated_filename.c_str()); |
| return false; |
| } |
| |
| int64_t image_size = image_file->GetLength(); |
| if (image_size < 0) { |
| *error_msg = StringPrintf("Error while getting size of relocated image file %s", |
| relocated_filename.c_str()); |
| return false; |
| } |
| if ((image_size % 4) != 0) { |
| *error_msg = |
| StringPrintf( |
| "Relocated image file %s size not multiple of 4: %" PRId64, |
| relocated_filename.c_str(), image_size); |
| return false; |
| } |
| if (image_size > std::numeric_limits<uint32_t>::max()) { |
| *error_msg = |
| StringPrintf( |
| "Relocated image file %s too large: %" PRId64, relocated_filename.c_str(), image_size); |
| return false; |
| } |
| |
| std::unique_ptr<uint8_t[]> image(new uint8_t[image_size]); |
| if (!image_file->ReadFully(image.get(), image_size)) { |
| *error_msg = StringPrintf("Failed to read relocated image file %s", relocated_filename.c_str()); |
| return false; |
| } |
| |
| const uint8_t* original_image_digest = rel.get(); |
| if (rel_size < SHA256_DIGEST_LENGTH) { |
| *error_msg = StringPrintf("Malformed image relocation file %s: too short", |
| rel_filename.c_str()); |
| return false; |
| } |
| |
| const ImageHeader& image_header = *reinterpret_cast<const ImageHeader*>(image.get()); |
| off_t expected_diff = image_header.GetPatchDelta(); |
| |
| if (expected_diff == 0) { |
| *error_msg = StringPrintf("Unsuported patch delta of zero in %s", |
| relocated_filename.c_str()); |
| return false; |
| } |
| |
| // Relocated image is expected to differ from the original due to relocation. |
| // Unrelocate the image in memory to compensate. |
| uint8_t* image_start = image.get(); |
| const uint8_t* rel_end = &rel[rel_size]; |
| const uint8_t* rel_ptr = &rel[SHA256_DIGEST_LENGTH]; |
| // The remaining .rel file consists of offsets at which relocation should've occurred. |
| // For each offset, we "unrelocate" the image by subtracting the expected relocation |
| // diff value (as specified in the image header). |
| // |
| // Each offset is encoded as a delta/diff relative to the previous offset. With the |
| // very first offset being encoded relative to offset 0. |
| // Deltas are encoded using little-endian 7 bits per byte encoding, with all bytes except |
| // the last one having the highest bit set. |
| uint32_t offset = 0; |
| while (rel_ptr != rel_end) { |
| uint32_t offset_delta = 0; |
| if (DecodeUnsignedLeb128Checked(&rel_ptr, rel_end, &offset_delta)) { |
| offset += offset_delta; |
| if (static_cast<int64_t>(offset) + static_cast<int64_t>(sizeof(uint32_t)) > image_size) { |
| *error_msg = StringPrintf("Relocation out of bounds in %s", relocated_filename.c_str()); |
| return false; |
| } |
| uint32_t *image_value = reinterpret_cast<uint32_t*>(image_start + offset); |
| *image_value -= expected_diff; |
| } else { |
| *error_msg = |
| StringPrintf( |
| "Malformed image relocation file %s: " |
| "last byte has it's most significant bit set", |
| rel_filename.c_str()); |
| return false; |
| } |
| } |
| |
| // Image in memory is now supposed to be identical to the original. We |
| // confirm this by comparing the digest of the in-memory image to the expected |
| // digest from relocation file. |
| uint8_t image_digest[SHA256_DIGEST_LENGTH]; |
| SHA256(image.get(), image_size, image_digest); |
| if (memcmp(image_digest, original_image_digest, SHA256_DIGEST_LENGTH) != 0) { |
| *error_msg = |
| StringPrintf( |
| "Relocated image %s does not match the original %s after unrelocation", |
| relocated_filename.c_str(), |
| original_filename.c_str()); |
| return false; |
| } |
| |
| // Relocated image is identical to the original, once relocations are taken into account |
| return true; |
| } |
| |
| static bool VerifySymlink(const std::string& intended_target, const std::string& link_name) { |
| std::string actual_target; |
| if (!android::base::Readlink(link_name, &actual_target)) { |
| PLOG(ERROR) << "Readlink on " << link_name << " failed."; |
| return false; |
| } |
| return actual_target == intended_target; |
| } |
| |
| static bool VerifyVdexAndOatSymlinks(const std::string& input_image_filename, |
| const std::string& output_image_filename) { |
| return VerifySymlink(ImageHeader::GetVdexLocationFromImageLocation(input_image_filename), |
| ImageHeader::GetVdexLocationFromImageLocation(output_image_filename)) |
| && VerifySymlink(ImageHeader::GetOatLocationFromImageLocation(input_image_filename), |
| ImageHeader::GetOatLocationFromImageLocation(output_image_filename)); |
| } |
| |
| bool PatchOat::CreateVdexAndOatSymlinks(const std::string& input_image_filename, |
| const std::string& output_image_filename) { |
| std::string input_vdex_filename = |
| ImageHeader::GetVdexLocationFromImageLocation(input_image_filename); |
| std::string input_oat_filename = |
| ImageHeader::GetOatLocationFromImageLocation(input_image_filename); |
| |
| std::unique_ptr<File> input_oat_file(OS::OpenFileForReading(input_oat_filename.c_str())); |
| if (input_oat_file.get() == nullptr) { |
| LOG(ERROR) << "Unable to open input oat file at " << input_oat_filename; |
| return false; |
| } |
| std::string error_msg; |
| std::unique_ptr<ElfFile> elf(ElfFile::Open(input_oat_file.get(), |
| PROT_READ | PROT_WRITE, |
| MAP_PRIVATE, |
| &error_msg)); |
| if (elf.get() == nullptr) { |
| LOG(ERROR) << "Unable to open oat file " << input_oat_filename << " : " << error_msg; |
| return false; |
| } |
| |
| MaybePic is_oat_pic = IsOatPic(elf.get()); |
| if (is_oat_pic >= ERROR_FIRST) { |
| // Error logged by IsOatPic |
| return false; |
| } else if (is_oat_pic == NOT_PIC) { |
| LOG(ERROR) << "patchoat cannot be used on non-PIC oat file: " << input_oat_filename; |
| return false; |
| } |
| |
| CHECK(is_oat_pic == PIC); |
| |
| std::string output_vdex_filename = |
| ImageHeader::GetVdexLocationFromImageLocation(output_image_filename); |
| std::string output_oat_filename = |
| ImageHeader::GetOatLocationFromImageLocation(output_image_filename); |
| |
| return SymlinkFile(input_oat_filename, output_oat_filename) && |
| SymlinkFile(input_vdex_filename, output_vdex_filename); |
| } |
| |
| bool PatchOat::Patch(const std::string& image_location, |
| off_t delta, |
| const std::string& output_image_directory, |
| const std::string& output_image_relocation_directory, |
| InstructionSet isa, |
| TimingLogger* timings) { |
| bool output_image = !output_image_directory.empty(); |
| bool output_image_relocation = !output_image_relocation_directory.empty(); |
| if ((!output_image) && (!output_image_relocation)) { |
| // Nothing to do |
| return true; |
| } |
| if ((output_image_relocation) && (delta == 0)) { |
| LOG(ERROR) << "Cannot output image relocation information when requested relocation delta is 0"; |
| return false; |
| } |
| |
| CHECK(Runtime::Current() == nullptr); |
| CHECK(!image_location.empty()) << "image file must have a filename."; |
| |
| TimingLogger::ScopedTiming t("Runtime Setup", timings); |
| |
| CHECK_NE(isa, InstructionSet::kNone); |
| |
| // Set up the runtime |
| PatchoatRuntimeOptionsHolder options_holder(image_location, isa); |
| if (!Runtime::Create(options_holder.GetRuntimeOptions(), false)) { |
| LOG(ERROR) << "Unable to initialize runtime"; |
| return false; |
| } |
| std::unique_ptr<Runtime> runtime(Runtime::Current()); |
| |
| // Runtime::Create acquired the mutator_lock_ that is normally given away when we Runtime::Start, |
| // give it away now and then switch to a more manageable ScopedObjectAccess. |
| Thread::Current()->TransitionFromRunnableToSuspended(kNative); |
| ScopedObjectAccess soa(Thread::Current()); |
| |
| std::vector<gc::space::ImageSpace*> spaces = Runtime::Current()->GetHeap()->GetBootImageSpaces(); |
| std::map<gc::space::ImageSpace*, std::unique_ptr<MemMap>> space_to_memmap_map; |
| |
| for (size_t i = 0; i < spaces.size(); ++i) { |
| t.NewTiming("Image Patching setup"); |
| gc::space::ImageSpace* space = spaces[i]; |
| std::string input_image_filename = space->GetImageFilename(); |
| std::unique_ptr<File> input_image(OS::OpenFileForReading(input_image_filename.c_str())); |
| if (input_image.get() == nullptr) { |
| LOG(ERROR) << "Unable to open input image file at " << input_image_filename; |
| return false; |
| } |
| |
| int64_t image_len = input_image->GetLength(); |
| if (image_len < 0) { |
| LOG(ERROR) << "Error while getting image length"; |
| return false; |
| } |
| ImageHeader image_header; |
| if (sizeof(image_header) != input_image->Read(reinterpret_cast<char*>(&image_header), |
| sizeof(image_header), 0)) { |
| LOG(ERROR) << "Unable to read image header from image file " << input_image->GetPath(); |
| } |
| |
| /*bool is_image_pic = */IsImagePic(image_header, input_image->GetPath()); |
| // Nothing special to do right now since the image always needs to get patched. |
| // Perhaps in some far-off future we may have images with relative addresses that are true-PIC. |
| |
| // Create the map where we will write the image patches to. |
| std::string error_msg; |
| std::unique_ptr<MemMap> image(MemMap::MapFile(image_len, |
| PROT_READ | PROT_WRITE, |
| MAP_PRIVATE, |
| input_image->Fd(), |
| 0, |
| /*low_4gb*/false, |
| input_image->GetPath().c_str(), |
| &error_msg)); |
| if (image.get() == nullptr) { |
| LOG(ERROR) << "Unable to map image file " << input_image->GetPath() << " : " << error_msg; |
| return false; |
| } |
| |
| |
| space_to_memmap_map.emplace(space, std::move(image)); |
| PatchOat p = PatchOat(isa, |
| space_to_memmap_map[space].get(), |
| space->GetLiveBitmap(), |
| space->GetMemMap(), |
| delta, |
| &space_to_memmap_map, |
| timings); |
| |
| t.NewTiming("Patching image"); |
| if (!p.PatchImage(i == 0)) { |
| LOG(ERROR) << "Failed to patch image file " << input_image_filename; |
| return false; |
| } |
| |
| // Write the patched image spaces. |
| if (output_image) { |
| std::string output_image_filename; |
| if (!GetDalvikCacheFilename(space->GetImageLocation().c_str(), |
| output_image_directory.c_str(), |
| &output_image_filename, |
| &error_msg)) { |
| LOG(ERROR) << "Failed to find relocated image file name: " << error_msg; |
| return false; |
| } |
| |
| if (!CreateVdexAndOatSymlinks(input_image_filename, output_image_filename)) |
| return false; |
| |
| t.NewTiming("Writing image"); |
| std::unique_ptr<File> output_image_file(CreateOrOpen(output_image_filename.c_str())); |
| if (output_image_file.get() == nullptr) { |
| LOG(ERROR) << "Failed to open output image file at " << output_image_filename; |
| return false; |
| } |
| |
| bool success = p.WriteImage(output_image_file.get()); |
| success = FinishFile(output_image_file.get(), success); |
| if (!success) { |
| return false; |
| } |
| } |
| |
| if (output_image_relocation) { |
| t.NewTiming("Writing image relocation"); |
| std::string original_image_filename(space->GetImageLocation() + ".rel"); |
| std::string image_relocation_filename = |
| output_image_relocation_directory |
| + (android::base::StartsWith(original_image_filename, "/") ? "" : "/") |
| + original_image_filename.substr(original_image_filename.find_last_of("/")); |
| int64_t input_image_size = input_image->GetLength(); |
| if (input_image_size < 0) { |
| LOG(ERROR) << "Error while getting input image size"; |
| return false; |
| } |
| std::unique_ptr<MemMap> original(MemMap::MapFile(input_image_size, |
| PROT_READ, |
| MAP_PRIVATE, |
| input_image->Fd(), |
| 0, |
| /*low_4gb*/false, |
| input_image->GetPath().c_str(), |
| &error_msg)); |
| if (original.get() == nullptr) { |
| LOG(ERROR) << "Unable to map image file " << input_image->GetPath() << " : " << error_msg; |
| return false; |
| } |
| |
| const MemMap* relocated = p.image_; |
| |
| if (!WriteRelFile(*original, *relocated, image_relocation_filename, &error_msg)) { |
| LOG(ERROR) << "Failed to create image relocation file " << image_relocation_filename |
| << ": " << error_msg; |
| return false; |
| } |
| } |
| } |
| |
| if (!kIsDebugBuild && !(kRunningOnMemoryTool && kMemoryToolDetectsLeaks)) { |
| // We want to just exit on non-debug builds, not bringing the runtime down |
| // in an orderly fashion. So release the following fields. |
| runtime.release(); |
| } |
| |
| return true; |
| } |
| |
| bool PatchOat::Verify(const std::string& image_location, |
| const std::string& output_image_directory, |
| InstructionSet isa, |
| TimingLogger* timings) { |
| if (image_location.empty()) { |
| LOG(ERROR) << "Original image file not provided"; |
| return false; |
| } |
| if (output_image_directory.empty()) { |
| LOG(ERROR) << "Relocated image directory not provided"; |
| return false; |
| } |
| |
| TimingLogger::ScopedTiming t("Runtime Setup", timings); |
| |
| CHECK_NE(isa, InstructionSet::kNone); |
| |
| // Set up the runtime |
| PatchoatRuntimeOptionsHolder options_holder(image_location, isa); |
| if (!Runtime::Create(options_holder.GetRuntimeOptions(), false)) { |
| LOG(ERROR) << "Unable to initialize runtime"; |
| return false; |
| } |
| std::unique_ptr<Runtime> runtime(Runtime::Current()); |
| |
| // Runtime::Create acquired the mutator_lock_ that is normally given away when we Runtime::Start, |
| // give it away now and then switch to a more manageable ScopedObjectAccess. |
| Thread::Current()->TransitionFromRunnableToSuspended(kNative); |
| ScopedObjectAccess soa(Thread::Current()); |
| |
| t.NewTiming("Image Verification setup"); |
| std::vector<gc::space::ImageSpace*> spaces = Runtime::Current()->GetHeap()->GetBootImageSpaces(); |
| |
| // TODO: Check that no other .rel files exist in the original dir |
| |
| bool success = true; |
| std::string image_location_dir = android::base::Dirname(image_location); |
| for (size_t i = 0; i < spaces.size(); ++i) { |
| gc::space::ImageSpace* space = spaces[i]; |
| |
| std::string relocated_image_filename; |
| std::string error_msg; |
| if (!GetDalvikCacheFilename(space->GetImageLocation().c_str(), |
| output_image_directory.c_str(), &relocated_image_filename, &error_msg)) { |
| LOG(ERROR) << "Failed to find relocated image file name: " << error_msg; |
| success = false; |
| break; |
| } |
| // location: /system/framework/boot.art |
| // isa: arm64 |
| // basename: boot.art |
| // original: /system/framework/arm64/boot.art |
| // relocation: /system/framework/arm64/boot.art.rel |
| std::string original_image_filename = |
| GetSystemImageFilename(space->GetImageLocation().c_str(), isa); |
| |
| if (!CheckImageIdenticalToOriginalExceptForRelocation( |
| relocated_image_filename, original_image_filename, &error_msg)) { |
| LOG(ERROR) << error_msg; |
| success = false; |
| break; |
| } |
| |
| if (!VerifyVdexAndOatSymlinks(original_image_filename, relocated_image_filename)) { |
| LOG(ERROR) << "Verification of vdex and oat symlinks for " |
| << space->GetImageLocation() << " failed."; |
| success = false; |
| break; |
| } |
| } |
| |
| if (!kIsDebugBuild && !(kRunningOnMemoryTool && kMemoryToolDetectsLeaks)) { |
| // We want to just exit on non-debug builds, not bringing the runtime down |
| // in an orderly fashion. So release the following fields. |
| runtime.release(); |
| } |
| |
| return success; |
| } |
| |
| bool PatchOat::WriteImage(File* out) { |
| CHECK(out != nullptr); |
| TimingLogger::ScopedTiming t("Writing image File", timings_); |
| std::string error_msg; |
| |
| // No error checking here, this is best effort. The locking may or may not |
| // succeed and we don't really care either way. |
| ScopedFlock img_flock = LockedFile::DupOf(out->Fd(), out->GetPath(), |
| true /* read_only_mode */, &error_msg); |
| |
| CHECK(image_ != nullptr); |
| size_t expect = image_->Size(); |
| if (out->WriteFully(reinterpret_cast<char*>(image_->Begin()), expect) && |
| out->SetLength(expect) == 0) { |
| return true; |
| } else { |
| LOG(ERROR) << "Writing to image file " << out->GetPath() << " failed."; |
| return false; |
| } |
| } |
| |
| bool PatchOat::IsImagePic(const ImageHeader& image_header, const std::string& image_path) { |
| if (!image_header.CompilePic()) { |
| if (kIsDebugBuild) { |
| LOG(INFO) << "image at location " << image_path << " was *not* compiled pic"; |
| } |
| return false; |
| } |
| |
| if (kIsDebugBuild) { |
| LOG(INFO) << "image at location " << image_path << " was compiled PIC"; |
| } |
| |
| return true; |
| } |
| |
| PatchOat::MaybePic PatchOat::IsOatPic(const ElfFile* oat_in) { |
| if (oat_in == nullptr) { |
| LOG(ERROR) << "No ELF input oat fie available"; |
| return ERROR_OAT_FILE; |
| } |
| |
| const std::string& file_path = oat_in->GetFilePath(); |
| |
| const OatHeader* oat_header = GetOatHeader(oat_in); |
| if (oat_header == nullptr) { |
| LOG(ERROR) << "Failed to find oat header in oat file " << file_path; |
| return ERROR_OAT_FILE; |
| } |
| |
| if (!oat_header->IsValid()) { |
| LOG(ERROR) << "Elf file " << file_path << " has an invalid oat header"; |
| return ERROR_OAT_FILE; |
| } |
| |
| bool is_pic = oat_header->IsPic(); |
| if (kIsDebugBuild) { |
| LOG(INFO) << "Oat file at " << file_path << " is " << (is_pic ? "PIC" : "not pic"); |
| } |
| |
| return is_pic ? PIC : NOT_PIC; |
| } |
| |
| class PatchOat::PatchOatArtFieldVisitor : public ArtFieldVisitor { |
| public: |
| explicit PatchOatArtFieldVisitor(PatchOat* patch_oat) : patch_oat_(patch_oat) {} |
| |
| void Visit(ArtField* field) OVERRIDE REQUIRES_SHARED(Locks::mutator_lock_) { |
| ArtField* const dest = patch_oat_->RelocatedCopyOf(field); |
| dest->SetDeclaringClass( |
| patch_oat_->RelocatedAddressOfPointer(field->GetDeclaringClass().Ptr())); |
| } |
| |
| private: |
| PatchOat* const patch_oat_; |
| }; |
| |
| void PatchOat::PatchArtFields(const ImageHeader* image_header) { |
| PatchOatArtFieldVisitor visitor(this); |
| image_header->VisitPackedArtFields(&visitor, heap_->Begin()); |
| } |
| |
| class PatchOat::PatchOatArtMethodVisitor : public ArtMethodVisitor { |
| public: |
| explicit PatchOatArtMethodVisitor(PatchOat* patch_oat) : patch_oat_(patch_oat) {} |
| |
| void Visit(ArtMethod* method) OVERRIDE REQUIRES_SHARED(Locks::mutator_lock_) { |
| ArtMethod* const dest = patch_oat_->RelocatedCopyOf(method); |
| patch_oat_->FixupMethod(method, dest); |
| } |
| |
| private: |
| PatchOat* const patch_oat_; |
| }; |
| |
| void PatchOat::PatchArtMethods(const ImageHeader* image_header) { |
| const PointerSize pointer_size = InstructionSetPointerSize(isa_); |
| PatchOatArtMethodVisitor visitor(this); |
| image_header->VisitPackedArtMethods(&visitor, heap_->Begin(), pointer_size); |
| } |
| |
| void PatchOat::PatchImTables(const ImageHeader* image_header) { |
| const PointerSize pointer_size = InstructionSetPointerSize(isa_); |
| // We can safely walk target image since the conflict tables are independent. |
| image_header->VisitPackedImTables( |
| [this](ArtMethod* method) { |
| return RelocatedAddressOfPointer(method); |
| }, |
| image_->Begin(), |
| pointer_size); |
| } |
| |
| void PatchOat::PatchImtConflictTables(const ImageHeader* image_header) { |
| const PointerSize pointer_size = InstructionSetPointerSize(isa_); |
| // We can safely walk target image since the conflict tables are independent. |
| image_header->VisitPackedImtConflictTables( |
| [this](ArtMethod* method) { |
| return RelocatedAddressOfPointer(method); |
| }, |
| image_->Begin(), |
| pointer_size); |
| } |
| |
| class PatchOat::FixupRootVisitor : public RootVisitor { |
| public: |
| explicit FixupRootVisitor(const PatchOat* patch_oat) : patch_oat_(patch_oat) { |
| } |
| |
| void VisitRoots(mirror::Object*** roots, size_t count, const RootInfo& info ATTRIBUTE_UNUSED) |
| OVERRIDE REQUIRES_SHARED(Locks::mutator_lock_) { |
| for (size_t i = 0; i < count; ++i) { |
| *roots[i] = patch_oat_->RelocatedAddressOfPointer(*roots[i]); |
| } |
| } |
| |
| void VisitRoots(mirror::CompressedReference<mirror::Object>** roots, size_t count, |
| const RootInfo& info ATTRIBUTE_UNUSED) |
| OVERRIDE REQUIRES_SHARED(Locks::mutator_lock_) { |
| for (size_t i = 0; i < count; ++i) { |
| roots[i]->Assign(patch_oat_->RelocatedAddressOfPointer(roots[i]->AsMirrorPtr())); |
| } |
| } |
| |
| private: |
| const PatchOat* const patch_oat_; |
| }; |
| |
| void PatchOat::PatchInternedStrings(const ImageHeader* image_header) { |
| const auto& section = image_header->GetInternedStringsSection(); |
| if (section.Size() == 0) { |
| return; |
| } |
| InternTable temp_table; |
| // Note that we require that ReadFromMemory does not make an internal copy of the elements. |
| // This also relies on visit roots not doing any verification which could fail after we update |
| // the roots to be the image addresses. |
| temp_table.AddTableFromMemory(image_->Begin() + section.Offset()); |
| FixupRootVisitor visitor(this); |
| temp_table.VisitRoots(&visitor, kVisitRootFlagAllRoots); |
| } |
| |
| void PatchOat::PatchClassTable(const ImageHeader* image_header) { |
| const auto& section = image_header->GetClassTableSection(); |
| if (section.Size() == 0) { |
| return; |
| } |
| // Note that we require that ReadFromMemory does not make an internal copy of the elements. |
| // This also relies on visit roots not doing any verification which could fail after we update |
| // the roots to be the image addresses. |
| WriterMutexLock mu(Thread::Current(), *Locks::classlinker_classes_lock_); |
| ClassTable temp_table; |
| temp_table.ReadFromMemory(image_->Begin() + section.Offset()); |
| FixupRootVisitor visitor(this); |
| temp_table.VisitRoots(UnbufferedRootVisitor(&visitor, RootInfo(kRootUnknown))); |
| } |
| |
| |
| class PatchOat::RelocatedPointerVisitor { |
| public: |
| explicit RelocatedPointerVisitor(PatchOat* patch_oat) : patch_oat_(patch_oat) {} |
| |
| template <typename T> |
| T* operator()(T* ptr, void** dest_addr ATTRIBUTE_UNUSED = nullptr) const { |
| return patch_oat_->RelocatedAddressOfPointer(ptr); |
| } |
| |
| private: |
| PatchOat* const patch_oat_; |
| }; |
| |
| void PatchOat::PatchDexFileArrays(mirror::ObjectArray<mirror::Object>* img_roots) { |
| auto* dex_caches = down_cast<mirror::ObjectArray<mirror::DexCache>*>( |
| img_roots->Get(ImageHeader::kDexCaches)); |
| const PointerSize pointer_size = InstructionSetPointerSize(isa_); |
| for (size_t i = 0, count = dex_caches->GetLength(); i < count; ++i) { |
| auto* orig_dex_cache = dex_caches->GetWithoutChecks(i); |
| auto* copy_dex_cache = RelocatedCopyOf(orig_dex_cache); |
| // Though the DexCache array fields are usually treated as native pointers, we set the full |
| // 64-bit values here, clearing the top 32 bits for 32-bit targets. The zero-extension is |
| // done by casting to the unsigned type uintptr_t before casting to int64_t, i.e. |
| // static_cast<int64_t>(reinterpret_cast<uintptr_t>(image_begin_ + offset))). |
| mirror::StringDexCacheType* orig_strings = orig_dex_cache->GetStrings(); |
| mirror::StringDexCacheType* relocated_strings = RelocatedAddressOfPointer(orig_strings); |
| copy_dex_cache->SetField64<false>( |
| mirror::DexCache::StringsOffset(), |
| static_cast<int64_t>(reinterpret_cast<uintptr_t>(relocated_strings))); |
| if (orig_strings != nullptr) { |
| orig_dex_cache->FixupStrings(RelocatedCopyOf(orig_strings), RelocatedPointerVisitor(this)); |
| } |
| mirror::TypeDexCacheType* orig_types = orig_dex_cache->GetResolvedTypes(); |
| mirror::TypeDexCacheType* relocated_types = RelocatedAddressOfPointer(orig_types); |
| copy_dex_cache->SetField64<false>( |
| mirror::DexCache::ResolvedTypesOffset(), |
| static_cast<int64_t>(reinterpret_cast<uintptr_t>(relocated_types))); |
| if (orig_types != nullptr) { |
| orig_dex_cache->FixupResolvedTypes(RelocatedCopyOf(orig_types), |
| RelocatedPointerVisitor(this)); |
| } |
| mirror::MethodDexCacheType* orig_methods = orig_dex_cache->GetResolvedMethods(); |
| mirror::MethodDexCacheType* relocated_methods = RelocatedAddressOfPointer(orig_methods); |
| copy_dex_cache->SetField64<false>( |
| mirror::DexCache::ResolvedMethodsOffset(), |
| static_cast<int64_t>(reinterpret_cast<uintptr_t>(relocated_methods))); |
| if (orig_methods != nullptr) { |
| mirror::MethodDexCacheType* copy_methods = RelocatedCopyOf(orig_methods); |
| for (size_t j = 0, num = orig_dex_cache->NumResolvedMethods(); j != num; ++j) { |
| mirror::MethodDexCachePair orig = |
| mirror::DexCache::GetNativePairPtrSize(orig_methods, j, pointer_size); |
| mirror::MethodDexCachePair copy(RelocatedAddressOfPointer(orig.object), orig.index); |
| mirror::DexCache::SetNativePairPtrSize(copy_methods, j, copy, pointer_size); |
| } |
| } |
| mirror::FieldDexCacheType* orig_fields = orig_dex_cache->GetResolvedFields(); |
| mirror::FieldDexCacheType* relocated_fields = RelocatedAddressOfPointer(orig_fields); |
| copy_dex_cache->SetField64<false>( |
| mirror::DexCache::ResolvedFieldsOffset(), |
| static_cast<int64_t>(reinterpret_cast<uintptr_t>(relocated_fields))); |
| if (orig_fields != nullptr) { |
| mirror::FieldDexCacheType* copy_fields = RelocatedCopyOf(orig_fields); |
| for (size_t j = 0, num = orig_dex_cache->NumResolvedFields(); j != num; ++j) { |
| mirror::FieldDexCachePair orig = |
| mirror::DexCache::GetNativePairPtrSize(orig_fields, j, pointer_size); |
| mirror::FieldDexCachePair copy(RelocatedAddressOfPointer(orig.object), orig.index); |
| mirror::DexCache::SetNativePairPtrSize(copy_fields, j, copy, pointer_size); |
| } |
| } |
| mirror::MethodTypeDexCacheType* orig_method_types = orig_dex_cache->GetResolvedMethodTypes(); |
| mirror::MethodTypeDexCacheType* relocated_method_types = |
| RelocatedAddressOfPointer(orig_method_types); |
| copy_dex_cache->SetField64<false>( |
| mirror::DexCache::ResolvedMethodTypesOffset(), |
| static_cast<int64_t>(reinterpret_cast<uintptr_t>(relocated_method_types))); |
| if (orig_method_types != nullptr) { |
| orig_dex_cache->FixupResolvedMethodTypes(RelocatedCopyOf(orig_method_types), |
| RelocatedPointerVisitor(this)); |
| } |
| |
| GcRoot<mirror::CallSite>* orig_call_sites = orig_dex_cache->GetResolvedCallSites(); |
| GcRoot<mirror::CallSite>* relocated_call_sites = RelocatedAddressOfPointer(orig_call_sites); |
| copy_dex_cache->SetField64<false>( |
| mirror::DexCache::ResolvedCallSitesOffset(), |
| static_cast<int64_t>(reinterpret_cast<uintptr_t>(relocated_call_sites))); |
| if (orig_call_sites != nullptr) { |
| orig_dex_cache->FixupResolvedCallSites(RelocatedCopyOf(orig_call_sites), |
| RelocatedPointerVisitor(this)); |
| } |
| } |
| } |
| |
| bool PatchOat::PatchImage(bool primary_image) { |
| ImageHeader* image_header = reinterpret_cast<ImageHeader*>(image_->Begin()); |
| CHECK_GT(image_->Size(), sizeof(ImageHeader)); |
| // These are the roots from the original file. |
| mirror::ObjectArray<mirror::Object>* img_roots = image_header->GetImageRoots().Ptr(); |
| image_header->RelocateImage(delta_); |
| |
| PatchArtFields(image_header); |
| PatchArtMethods(image_header); |
| PatchImTables(image_header); |
| PatchImtConflictTables(image_header); |
| PatchInternedStrings(image_header); |
| PatchClassTable(image_header); |
| // Patch dex file int/long arrays which point to ArtFields. |
| PatchDexFileArrays(img_roots); |
| |
| if (primary_image) { |
| VisitObject(img_roots); |
| } |
| |
| if (!image_header->IsValid()) { |
| LOG(ERROR) << "relocation renders image header invalid"; |
| return false; |
| } |
| |
| { |
| TimingLogger::ScopedTiming t("Walk Bitmap", timings_); |
| // Walk the bitmap. |
| WriterMutexLock mu(Thread::Current(), *Locks::heap_bitmap_lock_); |
| auto visitor = [&](mirror::Object* obj) REQUIRES_SHARED(Locks::mutator_lock_) { |
| VisitObject(obj); |
| }; |
| bitmap_->Walk(visitor); |
| } |
| return true; |
| } |
| |
| |
| void PatchOat::PatchVisitor::operator() (ObjPtr<mirror::Object> obj, |
| MemberOffset off, |
| bool is_static_unused ATTRIBUTE_UNUSED) const { |
| mirror::Object* referent = obj->GetFieldObject<mirror::Object, kVerifyNone>(off); |
| mirror::Object* moved_object = patcher_->RelocatedAddressOfPointer(referent); |
| copy_->SetFieldObjectWithoutWriteBarrier<false, true, kVerifyNone>(off, moved_object); |
| } |
| |
| void PatchOat::PatchVisitor::operator() (ObjPtr<mirror::Class> cls ATTRIBUTE_UNUSED, |
| ObjPtr<mirror::Reference> ref) const { |
| MemberOffset off = mirror::Reference::ReferentOffset(); |
| mirror::Object* referent = ref->GetReferent(); |
| DCHECK(referent == nullptr || |
| Runtime::Current()->GetHeap()->ObjectIsInBootImageSpace(referent)) << referent; |
| mirror::Object* moved_object = patcher_->RelocatedAddressOfPointer(referent); |
| copy_->SetFieldObjectWithoutWriteBarrier<false, true, kVerifyNone>(off, moved_object); |
| } |
| |
| // Called by PatchImage. |
| void PatchOat::VisitObject(mirror::Object* object) { |
| mirror::Object* copy = RelocatedCopyOf(object); |
| CHECK(copy != nullptr); |
| if (kUseBakerReadBarrier) { |
| object->AssertReadBarrierState(); |
| } |
| PatchOat::PatchVisitor visitor(this, copy); |
| object->VisitReferences<kVerifyNone>(visitor, visitor); |
| if (object->IsClass<kVerifyNone>()) { |
| const PointerSize pointer_size = InstructionSetPointerSize(isa_); |
| mirror::Class* klass = object->AsClass(); |
| mirror::Class* copy_klass = down_cast<mirror::Class*>(copy); |
| RelocatedPointerVisitor native_visitor(this); |
| klass->FixupNativePointers(copy_klass, pointer_size, native_visitor); |
| auto* vtable = klass->GetVTable(); |
| if (vtable != nullptr) { |
| vtable->Fixup(RelocatedCopyOfFollowImages(vtable), pointer_size, native_visitor); |
| } |
| mirror::IfTable* iftable = klass->GetIfTable(); |
| for (int32_t i = 0; i < klass->GetIfTableCount(); ++i) { |
| if (iftable->GetMethodArrayCount(i) > 0) { |
| auto* method_array = iftable->GetMethodArray(i); |
| CHECK(method_array != nullptr); |
| method_array->Fixup(RelocatedCopyOfFollowImages(method_array), |
| pointer_size, |
| native_visitor); |
| } |
| } |
| } else if (object->GetClass() == GetClassRoot<mirror::Method>() || |
| object->GetClass() == GetClassRoot<mirror::Constructor>()) { |
| // Need to go update the ArtMethod. |
| auto* dest = down_cast<mirror::Executable*>(copy); |
| auto* src = down_cast<mirror::Executable*>(object); |
| dest->SetArtMethod(RelocatedAddressOfPointer(src->GetArtMethod())); |
| } |
| } |
| |
| void PatchOat::FixupMethod(ArtMethod* object, ArtMethod* copy) { |
| const PointerSize pointer_size = InstructionSetPointerSize(isa_); |
| copy->CopyFrom(object, pointer_size); |
| // Just update the entry points if it looks like we should. |
| // TODO: sanity check all the pointers' values |
| copy->SetDeclaringClass(RelocatedAddressOfPointer(object->GetDeclaringClass())); |
| copy->SetEntryPointFromQuickCompiledCodePtrSize(RelocatedAddressOfPointer( |
| object->GetEntryPointFromQuickCompiledCodePtrSize(pointer_size)), pointer_size); |
| // No special handling for IMT conflict table since all pointers are moved by the same offset. |
| copy->SetDataPtrSize(RelocatedAddressOfPointer( |
| object->GetDataPtrSize(pointer_size)), pointer_size); |
| } |
| |
| static int orig_argc; |
| static char** orig_argv; |
| |
| static std::string CommandLine() { |
| std::vector<std::string> command; |
| for (int i = 0; i < orig_argc; ++i) { |
| command.push_back(orig_argv[i]); |
| } |
| return android::base::Join(command, ' '); |
| } |
| |
| static void UsageErrorV(const char* fmt, va_list ap) { |
| std::string error; |
| android::base::StringAppendV(&error, fmt, ap); |
| LOG(ERROR) << error; |
| } |
| |
| static void UsageError(const char* fmt, ...) { |
| va_list ap; |
| va_start(ap, fmt); |
| UsageErrorV(fmt, ap); |
| va_end(ap); |
| } |
| |
| NO_RETURN static void Usage(const char *fmt, ...) { |
| va_list ap; |
| va_start(ap, fmt); |
| UsageErrorV(fmt, ap); |
| va_end(ap); |
| |
| UsageError("Command: %s", CommandLine().c_str()); |
| UsageError("Usage: patchoat [options]..."); |
| UsageError(""); |
| UsageError(" --instruction-set=<isa>: Specifies the instruction set the patched code is"); |
| UsageError(" compiled for (required)."); |
| UsageError(""); |
| UsageError(" --input-image-location=<file.art>: Specifies the 'location' of the image file to"); |
| UsageError(" be patched."); |
| UsageError(""); |
| UsageError(" --output-image-directory=<dir>: Specifies the directory to write the patched"); |
| UsageError(" image file(s) to."); |
| UsageError(""); |
| UsageError(" --output-image-relocation-directory=<dir>: Specifies the directory to write"); |
| UsageError(" the image relocation information to."); |
| UsageError(""); |
| UsageError(" --base-offset-delta=<delta>: Specify the amount to change the old base-offset by."); |
| UsageError(" This value may be negative."); |
| UsageError(""); |
| UsageError(" --verify: Verify an existing patched file instead of creating one."); |
| UsageError(""); |
| UsageError(" --dump-timings: dump out patch timing information"); |
| UsageError(""); |
| UsageError(" --no-dump-timings: do not dump out patch timing information"); |
| UsageError(""); |
| |
| exit(EXIT_FAILURE); |
| } |
| |
| static int patchoat_patch_image(TimingLogger& timings, |
| InstructionSet isa, |
| const std::string& input_image_location, |
| const std::string& output_image_directory, |
| const std::string& output_image_relocation_directory, |
| off_t base_delta, |
| bool base_delta_set, |
| bool debug) { |
| CHECK(!input_image_location.empty()); |
| if ((output_image_directory.empty()) && (output_image_relocation_directory.empty())) { |
| Usage("Image patching requires --output-image-directory or --output-image-relocation-directory"); |
| } |
| |
| if (!base_delta_set) { |
| Usage("Must supply a desired new offset or delta."); |
| } |
| |
| if (!IsAligned<kPageSize>(base_delta)) { |
| Usage("Base offset/delta must be aligned to a pagesize (0x%08x) boundary.", kPageSize); |
| } |
| |
| if (debug) { |
| LOG(INFO) << "moving offset by " << base_delta |
| << " (0x" << std::hex << base_delta << ") bytes or " |
| << std::dec << (base_delta/kPageSize) << " pages."; |
| } |
| |
| TimingLogger::ScopedTiming pt("patch image and oat", &timings); |
| |
| bool ret = |
| PatchOat::Patch( |
| input_image_location, |
| base_delta, |
| output_image_directory, |
| output_image_relocation_directory, |
| isa, |
| &timings); |
| |
| if (kIsDebugBuild) { |
| LOG(INFO) << "Exiting with return ... " << ret; |
| } |
| return ret ? EXIT_SUCCESS : EXIT_FAILURE; |
| } |
| |
| static int patchoat_verify_image(TimingLogger& timings, |
| InstructionSet isa, |
| const std::string& input_image_location, |
| const std::string& output_image_directory) { |
| CHECK(!input_image_location.empty()); |
| TimingLogger::ScopedTiming pt("verify image and oat", &timings); |
| |
| bool ret = |
| PatchOat::Verify( |
| input_image_location, |
| output_image_directory, |
| isa, |
| &timings); |
| |
| if (kIsDebugBuild) { |
| LOG(INFO) << "Exiting with return ... " << ret; |
| } |
| return ret ? EXIT_SUCCESS : EXIT_FAILURE; |
| } |
| |
| static int patchoat(int argc, char **argv) { |
| Locks::Init(); |
| InitLogging(argv, Runtime::Abort); |
| MemMap::Init(); |
| const bool debug = kIsDebugBuild; |
| orig_argc = argc; |
| orig_argv = argv; |
| TimingLogger timings("patcher", false, false); |
| |
| // Skip over the command name. |
| argv++; |
| argc--; |
| |
| if (argc == 0) { |
| Usage("No arguments specified"); |
| } |
| |
| timings.StartTiming("Patchoat"); |
| |
| // cmd line args |
| bool isa_set = false; |
| InstructionSet isa = InstructionSet::kNone; |
| std::string input_image_location; |
| std::string output_image_directory; |
| std::string output_image_relocation_directory; |
| off_t base_delta = 0; |
| bool base_delta_set = false; |
| bool dump_timings = kIsDebugBuild; |
| bool verify = false; |
| |
| for (int i = 0; i < argc; ++i) { |
| const StringPiece option(argv[i]); |
| const bool log_options = false; |
| if (log_options) { |
| LOG(INFO) << "patchoat: option[" << i << "]=" << argv[i]; |
| } |
| if (option.starts_with("--instruction-set=")) { |
| isa_set = true; |
| const char* isa_str = option.substr(strlen("--instruction-set=")).data(); |
| isa = GetInstructionSetFromString(isa_str); |
| if (isa == InstructionSet::kNone) { |
| Usage("Unknown or invalid instruction set %s", isa_str); |
| } |
| } else if (option.starts_with("--input-image-location=")) { |
| input_image_location = option.substr(strlen("--input-image-location=")).data(); |
| } else if (option.starts_with("--output-image-directory=")) { |
| output_image_directory = option.substr(strlen("--output-image-directory=")).data(); |
| } else if (option.starts_with("--output-image-relocation-directory=")) { |
| output_image_relocation_directory = |
| option.substr(strlen("--output-image-relocation-directory=")).data(); |
| } else if (option.starts_with("--base-offset-delta=")) { |
| const char* base_delta_str = option.substr(strlen("--base-offset-delta=")).data(); |
| base_delta_set = true; |
| if (!ParseInt(base_delta_str, &base_delta)) { |
| Usage("Failed to parse --base-offset-delta argument '%s' as an off_t", base_delta_str); |
| } |
| } else if (option == "--dump-timings") { |
| dump_timings = true; |
| } else if (option == "--no-dump-timings") { |
| dump_timings = false; |
| } else if (option == "--verify") { |
| verify = true; |
| } else { |
| Usage("Unknown argument %s", option.data()); |
| } |
| } |
| |
| // The instruction set is mandatory. This simplifies things... |
| if (!isa_set) { |
| Usage("Instruction set must be set."); |
| } |
| |
| int ret; |
| if (verify) { |
| ret = patchoat_verify_image(timings, |
| isa, |
| input_image_location, |
| output_image_directory); |
| } else { |
| ret = patchoat_patch_image(timings, |
| isa, |
| input_image_location, |
| output_image_directory, |
| output_image_relocation_directory, |
| base_delta, |
| base_delta_set, |
| debug); |
| } |
| |
| timings.EndTiming(); |
| if (dump_timings) { |
| LOG(INFO) << Dumpable<TimingLogger>(timings); |
| } |
| |
| return ret; |
| } |
| |
| } // namespace art |
| |
| int main(int argc, char **argv) { |
| return art::patchoat(argc, argv); |
| } |
