runtime/oat/oat_file_assistant_context.cc - LeafOS-Project/android_art - Gitiles

 /*
  * Copyright (C) 2022 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 "oat_file_assistant_context.h"

 #include <memory>
 #include <optional>
 #include <string>
 #include <vector>

 #include "android-base/logging.h"
 #include "android-base/stringprintf.h"
 #include "arch/instruction_set.h"
 #include "base/array_ref.h"
 #include "base/file_utils.h"
 #include "base/logging.h"
 #include "base/mem_map.h"
 #include "class_linker.h"
 #include "dex/art_dex_file_loader.h"
 #include "gc/heap.h"
 #include "gc/space/image_space.h"

 namespace art HIDDEN {

 using ::android::base::StringPrintf;
 using ::art::gc::space::ImageSpace;

 OatFileAssistantContext::OatFileAssistantContext(
     std::unique_ptr<OatFileAssistantContext::RuntimeOptions> runtime_options)
     : runtime_options_(std::move(runtime_options)) {
   DCHECK_EQ(runtime_options_->boot_class_path.size(),
             runtime_options_->boot_class_path_locations.size());
   DCHECK_IMPLIES(
       runtime_options_->boot_class_path_files.has_value(),
       runtime_options_->boot_class_path.size() == runtime_options_->boot_class_path_files->size());
   // Opening dex files and boot images require MemMap.
   MemMap::Init();
 }

 OatFileAssistantContext::OatFileAssistantContext(Runtime* runtime)
     : OatFileAssistantContext(std::make_unique<OatFileAssistantContext::RuntimeOptions>(
           OatFileAssistantContext::RuntimeOptions{
               .image_locations = runtime->GetImageLocations(),
               .boot_class_path = runtime->GetBootClassPath(),
               .boot_class_path_locations = runtime->GetBootClassPathLocations(),
               .boot_class_path_files = !runtime->GetBootClassPathFiles().empty() ?
                                            runtime->GetBootClassPathFiles() :
                                            std::optional<ArrayRef<File>>(),
               .deny_art_apex_data_files = runtime->DenyArtApexDataFiles(),
           })) {
   // Fetch boot image info from the runtime.
   std::vector<BootImageInfo>& boot_image_info_list = boot_image_info_list_by_isa_[kRuntimeISA];
   for (const ImageSpace* image_space : runtime->GetHeap()->GetBootImageSpaces()) {
     // We only need the checksum of the first component for each boot image. They are in image
     // spaces that have a non-zero component count.
     if (image_space->GetComponentCount() > 0) {
       BootImageInfo& boot_image_info = boot_image_info_list.emplace_back();
       boot_image_info.component_count = image_space->GetComponentCount();
       ImageSpace::AppendImageChecksum(image_space->GetComponentCount(),
                                       image_space->GetImageHeader().GetImageChecksum(),
                                       &boot_image_info.checksum);
     }
   }

   // Fetch BCP checksums from the runtime.
   size_t bcp_index = 0;
   std::vector<std::string>* current_bcp_checksums = nullptr;
   const std::vector<const DexFile*>& bcp_dex_files = runtime->GetClassLinker()->GetBootClassPath();
   for (size_t i = 0; i < bcp_dex_files.size();) {
     uint32_t checksum = DexFileLoader::GetMultiDexChecksum(bcp_dex_files, &i);
     DCHECK_LT(bcp_index, runtime_options_->boot_class_path.size());
     current_bcp_checksums = &bcp_checksums_by_index_[bcp_index++];
     DCHECK_NE(current_bcp_checksums, nullptr);
     current_bcp_checksums->push_back(StringPrintf("/%08x", checksum));
   }
   DCHECK_EQ(bcp_index, runtime_options_->boot_class_path.size());

   // Fetch APEX versions from the runtime.
   apex_versions_ = runtime->GetApexVersions();
 }

 const OatFileAssistantContext::RuntimeOptions& OatFileAssistantContext::GetRuntimeOptions() const {
   return *runtime_options_;
 }

 bool OatFileAssistantContext::FetchAll(std::string* error_msg) {
   std::vector<InstructionSet> isas = GetSupportedInstructionSets(error_msg);
   if (isas.empty()) {
     return false;
   }
   for (InstructionSet isa : isas) {
     GetBootImageInfoList(isa);
   }
   for (size_t i = 0; i < runtime_options_->boot_class_path.size(); i++) {
     if (GetBcpChecksums(i, error_msg) == nullptr) {
       return false;
     }
   }
   GetApexVersions();
   return true;
 }

 const std::vector<OatFileAssistantContext::BootImageInfo>&
 OatFileAssistantContext::GetBootImageInfoList(InstructionSet isa) {
   if (auto it = boot_image_info_list_by_isa_.find(isa); it != boot_image_info_list_by_isa_.end()) {
     return it->second;
   }

   ImageSpace::BootImageLayout layout(
       ArrayRef<const std::string>(runtime_options_->image_locations),
       ArrayRef<const std::string>(runtime_options_->boot_class_path),
       ArrayRef<const std::string>(runtime_options_->boot_class_path_locations),
       runtime_options_->boot_class_path_files.value_or(ArrayRef<File>()),
       /*boot_class_path_image_files=*/{},
       /*boot_class_path_vdex_files=*/{},
       /*boot_class_path_oat_files=*/{},
       &GetApexVersions());

   std::string error_msg;
   if (!layout.LoadFromSystem(isa, /*allow_in_memory_compilation=*/false, &error_msg)) {
     // At this point, `layout` contains nothing.
     VLOG(oat) << "Some error occurred when loading boot images for oat file validation: "
               << error_msg;
     // Create an empty entry so that we don't have to retry when the function is called again.
     return boot_image_info_list_by_isa_[isa];
   }

   std::vector<BootImageInfo>& boot_image_info_list = boot_image_info_list_by_isa_[isa];
   for (const ImageSpace::BootImageLayout::ImageChunk& chunk : layout.GetChunks()) {
     BootImageInfo& boot_image_info = boot_image_info_list.emplace_back();
     boot_image_info.component_count = chunk.component_count;
     ImageSpace::AppendImageChecksum(
         chunk.component_count, chunk.checksum, &boot_image_info.checksum);
   }
   return boot_image_info_list;
 }

 const std::vector<std::string>* OatFileAssistantContext::GetBcpChecksums(size_t bcp_index,
                                                                          std::string* error_msg) {
   DCHECK_LT(bcp_index, runtime_options_->boot_class_path.size());

   if (auto it = bcp_checksums_by_index_.find(bcp_index); it != bcp_checksums_by_index_.end()) {
     return &it->second;
   }

   std::optional<ArrayRef<File>> bcp_files = runtime_options_->boot_class_path_files;
   File noFile;
   File* file = bcp_files.has_value() ? &(*bcp_files)[bcp_index] : &noFile;
   ArtDexFileLoader dex_loader(file, runtime_options_->boot_class_path[bcp_index]);
   std::optional<uint32_t> checksum;
   bool ok = dex_loader.GetMultiDexChecksum(&checksum, error_msg);
   if (!ok) {
     return nullptr;
   }

   DCHECK(checksum.has_value());
   std::vector<std::string>& bcp_checksums = bcp_checksums_by_index_[bcp_index];
   if (checksum.has_value()) {
     bcp_checksums.push_back(StringPrintf("/%08x", checksum.value()));
   }
   return &bcp_checksums;
 }

 const std::string& OatFileAssistantContext::GetApexVersions() {
   if (apex_versions_.has_value()) {
     return apex_versions_.value();
   }

   apex_versions_ = Runtime::GetApexVersions(
       ArrayRef<const std::string>(runtime_options_->boot_class_path_locations));
   return apex_versions_.value();
 }

 }  // namespace art
	/*
	* Copyright (C) 2022 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 "oat_file_assistant_context.h"

	#include <memory>
	#include <optional>
	#include <string>
	#include <vector>

	#include "android-base/logging.h"
	#include "android-base/stringprintf.h"
	#include "arch/instruction_set.h"
	#include "base/array_ref.h"
	#include "base/file_utils.h"
	#include "base/logging.h"
	#include "base/mem_map.h"
	#include "class_linker.h"
	#include "dex/art_dex_file_loader.h"
	#include "gc/heap.h"
	#include "gc/space/image_space.h"

	namespace art HIDDEN {

	using ::android::base::StringPrintf;
	using ::art::gc::space::ImageSpace;

	OatFileAssistantContext::OatFileAssistantContext(
	std::unique_ptr<OatFileAssistantContext::RuntimeOptions> runtime_options)
	: runtime_options_(std::move(runtime_options)) {
	DCHECK_EQ(runtime_options_->boot_class_path.size(),
	runtime_options_->boot_class_path_locations.size());
	DCHECK_IMPLIES(
	runtime_options_->boot_class_path_files.has_value(),
	runtime_options_->boot_class_path.size() == runtime_options_->boot_class_path_files->size());
	// Opening dex files and boot images require MemMap.
	MemMap::Init();
	}

	OatFileAssistantContext::OatFileAssistantContext(Runtime* runtime)
	: OatFileAssistantContext(std::make_unique<OatFileAssistantContext::RuntimeOptions>(
	OatFileAssistantContext::RuntimeOptions{
	.image_locations = runtime->GetImageLocations(),
	.boot_class_path = runtime->GetBootClassPath(),
	.boot_class_path_locations = runtime->GetBootClassPathLocations(),
	.boot_class_path_files = !runtime->GetBootClassPathFiles().empty() ?
	runtime->GetBootClassPathFiles() :
	std::optional<ArrayRef<File>>(),
	.deny_art_apex_data_files = runtime->DenyArtApexDataFiles(),
	})) {
	// Fetch boot image info from the runtime.
	std::vector<BootImageInfo>& boot_image_info_list = boot_image_info_list_by_isa_[kRuntimeISA];
	for (const ImageSpace* image_space : runtime->GetHeap()->GetBootImageSpaces()) {
	// We only need the checksum of the first component for each boot image. They are in image
	// spaces that have a non-zero component count.
	if (image_space->GetComponentCount() > 0) {
	BootImageInfo& boot_image_info = boot_image_info_list.emplace_back();
	boot_image_info.component_count = image_space->GetComponentCount();
	ImageSpace::AppendImageChecksum(image_space->GetComponentCount(),
	image_space->GetImageHeader().GetImageChecksum(),
	&boot_image_info.checksum);
	}
	}

	// Fetch BCP checksums from the runtime.
	size_t bcp_index = 0;
	std::vector<std::string>* current_bcp_checksums = nullptr;
	const std::vector<const DexFile*>& bcp_dex_files = runtime->GetClassLinker()->GetBootClassPath();
	for (size_t i = 0; i < bcp_dex_files.size();) {
	uint32_t checksum = DexFileLoader::GetMultiDexChecksum(bcp_dex_files, &i);
	DCHECK_LT(bcp_index, runtime_options_->boot_class_path.size());
	current_bcp_checksums = &bcp_checksums_by_index_[bcp_index++];
	DCHECK_NE(current_bcp_checksums, nullptr);
	current_bcp_checksums->push_back(StringPrintf("/%08x", checksum));
	}
	DCHECK_EQ(bcp_index, runtime_options_->boot_class_path.size());

	// Fetch APEX versions from the runtime.
	apex_versions_ = runtime->GetApexVersions();
	}

	const OatFileAssistantContext::RuntimeOptions& OatFileAssistantContext::GetRuntimeOptions() const {
	return *runtime_options_;
	}

	bool OatFileAssistantContext::FetchAll(std::string* error_msg) {
	std::vector<InstructionSet> isas = GetSupportedInstructionSets(error_msg);
	if (isas.empty()) {
	return false;
	}
	for (InstructionSet isa : isas) {
	GetBootImageInfoList(isa);
	}
	for (size_t i = 0; i < runtime_options_->boot_class_path.size(); i++) {
	if (GetBcpChecksums(i, error_msg) == nullptr) {
	return false;
	}
	}
	GetApexVersions();
	return true;
	}

	const std::vector<OatFileAssistantContext::BootImageInfo>&
	OatFileAssistantContext::GetBootImageInfoList(InstructionSet isa) {
	if (auto it = boot_image_info_list_by_isa_.find(isa); it != boot_image_info_list_by_isa_.end()) {
	return it->second;
	}

	ImageSpace::BootImageLayout layout(
	ArrayRef<const std::string>(runtime_options_->image_locations),
	ArrayRef<const std::string>(runtime_options_->boot_class_path),
	ArrayRef<const std::string>(runtime_options_->boot_class_path_locations),
	runtime_options_->boot_class_path_files.value_or(ArrayRef<File>()),
	/boot_class_path_image_files=/{},
	/boot_class_path_vdex_files=/{},
	/boot_class_path_oat_files=/{},
	&GetApexVersions());

	std::string error_msg;
	if (!layout.LoadFromSystem(isa, /allow_in_memory_compilation=/false, &error_msg)) {
	// At this point, `layout` contains nothing.
	VLOG(oat) << "Some error occurred when loading boot images for oat file validation: "
	<< error_msg;
	// Create an empty entry so that we don't have to retry when the function is called again.
	return boot_image_info_list_by_isa_[isa];
	}

	std::vector<BootImageInfo>& boot_image_info_list = boot_image_info_list_by_isa_[isa];
	for (const ImageSpace::BootImageLayout::ImageChunk& chunk : layout.GetChunks()) {
	BootImageInfo& boot_image_info = boot_image_info_list.emplace_back();
	boot_image_info.component_count = chunk.component_count;
	ImageSpace::AppendImageChecksum(
	chunk.component_count, chunk.checksum, &boot_image_info.checksum);
	}
	return boot_image_info_list;
	}

	const std::vector<std::string>* OatFileAssistantContext::GetBcpChecksums(size_t bcp_index,
	std::string* error_msg) {
	DCHECK_LT(bcp_index, runtime_options_->boot_class_path.size());

	if (auto it = bcp_checksums_by_index_.find(bcp_index); it != bcp_checksums_by_index_.end()) {
	return &it->second;
	}

	std::optional<ArrayRef<File>> bcp_files = runtime_options_->boot_class_path_files;
	File noFile;
	File* file = bcp_files.has_value() ? &(*bcp_files)[bcp_index] : &noFile;
	ArtDexFileLoader dex_loader(file, runtime_options_->boot_class_path[bcp_index]);
	std::optional<uint32_t> checksum;
	bool ok = dex_loader.GetMultiDexChecksum(&checksum, error_msg);
	if (!ok) {
	return nullptr;
	}

	DCHECK(checksum.has_value());
	std::vector<std::string>& bcp_checksums = bcp_checksums_by_index_[bcp_index];
	if (checksum.has_value()) {
	bcp_checksums.push_back(StringPrintf("/%08x", checksum.value()));
	}
	return &bcp_checksums;
	}

	const std::string& OatFileAssistantContext::GetApexVersions() {
	if (apex_versions_.has_value()) {
	return apex_versions_.value();
	}

	apex_versions_ = Runtime::GetApexVersions(
	ArrayRef<const std::string>(runtime_options_->boot_class_path_locations));
	return apex_versions_.value();
	}

	} // namespace art