| /* |
| * Copyright (C) 2021 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 "MemtrackProxy.h" |
| |
| #include <android-base/logging.h> |
| #include <android/binder_manager.h> |
| #include <private/android_filesystem_config.h> |
| |
| using ::android::hardware::hidl_vec; |
| using ::android::hardware::Return; |
| |
| namespace aidl { |
| namespace android { |
| namespace hardware { |
| namespace memtrack { |
| |
| // Check Memtrack Flags |
| static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::SMAPS_ACCOUNTED) == |
| static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_SMAPS_ACCOUNTED)); |
| static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::SMAPS_UNACCOUNTED) == |
| static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_SMAPS_UNACCOUNTED)); |
| static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::SHARED) == |
| static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_SHARED)); |
| static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::SHARED_PSS) == |
| static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_SHARED_PSS)); |
| static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::PRIVATE) == |
| static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_PRIVATE)); |
| static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::SYSTEM) == |
| static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_SYSTEM)); |
| static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::DEDICATED) == |
| static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_DEDICATED)); |
| static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::NONSECURE) == |
| static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_NONSECURE)); |
| static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::SECURE) == |
| static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_SECURE)); |
| |
| // Check Memtrack Types |
| static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackType::OTHER) == |
| static_cast<uint32_t>(V1_aidl::MemtrackType::OTHER)); |
| static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackType::GL) == |
| static_cast<uint32_t>(V1_aidl::MemtrackType::GL)); |
| static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackType::GRAPHICS) == |
| static_cast<uint32_t>(V1_aidl::MemtrackType::GRAPHICS)); |
| static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackType::MULTIMEDIA) == |
| static_cast<uint32_t>(V1_aidl::MemtrackType::MULTIMEDIA)); |
| static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackType::CAMERA) == |
| static_cast<uint32_t>(V1_aidl::MemtrackType::CAMERA)); |
| |
| __attribute__((warn_unused_result)) bool translate(const V1_0_hidl::MemtrackRecord& in, |
| V1_aidl::MemtrackRecord* out) { |
| // Convert uint64_t to int64_t (long in AIDL). AIDL doesn't support unsigned types. |
| if (in.sizeInBytes > std::numeric_limits<int64_t>::max() || in.sizeInBytes < 0) { |
| return false; |
| } |
| out->sizeInBytes = static_cast<int64_t>(in.sizeInBytes); |
| |
| // It's ok to just assign directly, since this is a bitmap. |
| out->flags = in.flags; |
| return true; |
| } |
| |
| sp<V1_0_hidl::IMemtrack> MemtrackProxy::MemtrackHidlInstance() { |
| return V1_0_hidl::IMemtrack::getService(); |
| } |
| |
| std::shared_ptr<V1_aidl::IMemtrack> MemtrackProxy::MemtrackAidlInstance() { |
| const auto instance = std::string() + V1_aidl::IMemtrack::descriptor + "/default"; |
| bool declared = AServiceManager_isDeclared(instance.c_str()); |
| if (!declared) { |
| return nullptr; |
| } |
| ndk::SpAIBinder memtrack_binder = |
| ndk::SpAIBinder(AServiceManager_waitForService(instance.c_str())); |
| return V1_aidl::IMemtrack::fromBinder(memtrack_binder); |
| } |
| |
| bool MemtrackProxy::CheckUid(uid_t calling_uid) { |
| // Allow AID_SHELL for adb shell dumpsys meminfo |
| return calling_uid == AID_SYSTEM || calling_uid == AID_ROOT || calling_uid == AID_SHELL; |
| } |
| |
| bool MemtrackProxy::CheckPid(pid_t calling_pid, pid_t request_pid) { |
| return calling_pid == request_pid; |
| } |
| |
| MemtrackProxy::MemtrackProxy() |
| : memtrack_hidl_instance_(MemtrackProxy::MemtrackHidlInstance()), |
| memtrack_aidl_instance_(MemtrackProxy::MemtrackAidlInstance()) {} |
| |
| ndk::ScopedAStatus MemtrackProxy::getMemory(int pid, MemtrackType type, |
| std::vector<MemtrackRecord>* _aidl_return) { |
| if (pid < 0) { |
| return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT); |
| } |
| |
| if (!MemtrackProxy::CheckPid(AIBinder_getCallingPid(), pid) && |
| !MemtrackProxy::CheckUid(AIBinder_getCallingUid())) { |
| return ndk::ScopedAStatus::fromExceptionCodeWithMessage( |
| EX_SECURITY, |
| "Only AID_ROOT, AID_SYSTEM and AID_SHELL can request getMemory() for PIDs other " |
| "than the calling PID"); |
| } |
| |
| if (type != MemtrackType::OTHER && type != MemtrackType::GL && type != MemtrackType::GRAPHICS && |
| type != MemtrackType::MULTIMEDIA && type != MemtrackType::CAMERA) { |
| return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION); |
| } |
| |
| _aidl_return->clear(); |
| |
| if (memtrack_aidl_instance_) { |
| return memtrack_aidl_instance_->getMemory(pid, type, _aidl_return); |
| } else if (memtrack_hidl_instance_) { |
| ndk::ScopedAStatus aidl_status; |
| |
| Return<void> ret = memtrack_hidl_instance_->getMemory( |
| pid, static_cast<V1_0_hidl::MemtrackType>(type), |
| [&_aidl_return, &aidl_status](V1_0_hidl::MemtrackStatus status, |
| hidl_vec<V1_0_hidl::MemtrackRecord> records) { |
| switch (status) { |
| case V1_0_hidl::MemtrackStatus::SUCCESS: |
| aidl_status = ndk::ScopedAStatus::ok(); |
| break; |
| case V1_0_hidl::MemtrackStatus::MEMORY_TRACKING_NOT_SUPPORTED: |
| [[fallthrough]]; |
| case V1_0_hidl::MemtrackStatus::TYPE_NOT_SUPPORTED: |
| [[fallthrough]]; |
| default: |
| aidl_status = |
| ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION); |
| return; |
| } |
| |
| _aidl_return->resize(records.size()); |
| for (size_t i = 0; i < records.size(); i++) { |
| if (!translate(records[i], &(*_aidl_return)[i])) { |
| aidl_status = ndk::ScopedAStatus::fromExceptionCodeWithMessage( |
| EX_SERVICE_SPECIFIC, |
| "Failed to convert HIDL MemtrackRecord to AIDL"); |
| return; |
| } |
| } |
| }); |
| |
| // Check HIDL return |
| if (!ret.isOk()) { |
| const char* err_msg = "HIDL Memtrack::getMemory() failed"; |
| aidl_status = |
| ndk::ScopedAStatus::fromExceptionCodeWithMessage(EX_SERVICE_SPECIFIC, err_msg); |
| LOG(ERROR) << err_msg << ": " << ret.description(); |
| } |
| |
| return aidl_status; |
| } |
| |
| return ndk::ScopedAStatus::fromExceptionCodeWithMessage(EX_NULL_POINTER, |
| "Memtrack HAL service not available"); |
| } |
| |
| ndk::ScopedAStatus MemtrackProxy::getGpuDeviceInfo(std::vector<DeviceInfo>* _aidl_return) { |
| if (!MemtrackProxy::CheckUid(AIBinder_getCallingUid())) { |
| return ndk::ScopedAStatus::fromExceptionCodeWithMessage(EX_SECURITY, |
| "Only AID_ROOT, AID_SYSTEM and AID_SHELL can request getGpuDeviceInfo()"); |
| } |
| |
| _aidl_return->clear(); |
| |
| if (memtrack_aidl_instance_ || |
| (memtrack_aidl_instance_ = MemtrackProxy::MemtrackAidlInstance())) { |
| return memtrack_aidl_instance_->getGpuDeviceInfo(_aidl_return); |
| } |
| |
| return ndk::ScopedAStatus::fromExceptionCodeWithMessage(EX_NULL_POINTER, |
| "Memtrack HAL service not available"); |
| } |
| |
| } // namespace memtrack |
| } // namespace hardware |
| } // namespace android |
| } // namespace aidl |
