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195 lines
8.5 KiB
195 lines
8.5 KiB
/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "MemtrackProxy.h"
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#include <android-base/logging.h>
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#include <android/binder_manager.h>
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#include <private/android_filesystem_config.h>
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using ::android::hardware::hidl_vec;
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using ::android::hardware::Return;
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namespace aidl {
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namespace android {
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namespace hardware {
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namespace memtrack {
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// Check Memtrack Flags
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static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::SMAPS_ACCOUNTED) ==
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static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_SMAPS_ACCOUNTED));
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static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::SMAPS_UNACCOUNTED) ==
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static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_SMAPS_UNACCOUNTED));
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static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::SHARED) ==
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static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_SHARED));
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static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::SHARED_PSS) ==
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static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_SHARED_PSS));
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static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::PRIVATE) ==
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static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_PRIVATE));
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static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::SYSTEM) ==
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static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_SYSTEM));
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static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::DEDICATED) ==
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static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_DEDICATED));
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static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::NONSECURE) ==
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static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_NONSECURE));
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static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackFlag::SECURE) ==
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static_cast<uint32_t>(V1_aidl::MemtrackRecord::FLAG_SECURE));
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// Check Memtrack Types
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static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackType::OTHER) ==
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static_cast<uint32_t>(V1_aidl::MemtrackType::OTHER));
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static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackType::GL) ==
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static_cast<uint32_t>(V1_aidl::MemtrackType::GL));
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static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackType::GRAPHICS) ==
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static_cast<uint32_t>(V1_aidl::MemtrackType::GRAPHICS));
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static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackType::MULTIMEDIA) ==
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static_cast<uint32_t>(V1_aidl::MemtrackType::MULTIMEDIA));
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static_assert(static_cast<uint32_t>(V1_0_hidl::MemtrackType::CAMERA) ==
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static_cast<uint32_t>(V1_aidl::MemtrackType::CAMERA));
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__attribute__((warn_unused_result)) bool translate(const V1_0_hidl::MemtrackRecord& in,
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V1_aidl::MemtrackRecord* out) {
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// Convert uint64_t to int64_t (long in AIDL). AIDL doesn't support unsigned types.
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if (in.sizeInBytes > std::numeric_limits<int64_t>::max() || in.sizeInBytes < 0) {
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return false;
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}
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out->sizeInBytes = static_cast<int64_t>(in.sizeInBytes);
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// It's ok to just assign directly, since this is a bitmap.
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out->flags = in.flags;
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return true;
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}
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sp<V1_0_hidl::IMemtrack> MemtrackProxy::MemtrackHidlInstance() {
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return V1_0_hidl::IMemtrack::getService();
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}
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std::shared_ptr<V1_aidl::IMemtrack> MemtrackProxy::MemtrackAidlInstance() {
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const auto instance = std::string() + V1_aidl::IMemtrack::descriptor + "/default";
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bool declared = AServiceManager_isDeclared(instance.c_str());
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if (!declared) {
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return nullptr;
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}
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ndk::SpAIBinder memtrack_binder =
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ndk::SpAIBinder(AServiceManager_waitForService(instance.c_str()));
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return V1_aidl::IMemtrack::fromBinder(memtrack_binder);
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}
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bool MemtrackProxy::CheckUid(uid_t calling_uid) {
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// Allow AID_SHELL for adb shell dumpsys meminfo
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return calling_uid == AID_SYSTEM || calling_uid == AID_ROOT || calling_uid == AID_SHELL;
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}
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bool MemtrackProxy::CheckPid(pid_t calling_pid, pid_t request_pid) {
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return calling_pid == request_pid;
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}
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MemtrackProxy::MemtrackProxy()
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: memtrack_hidl_instance_(MemtrackProxy::MemtrackHidlInstance()),
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memtrack_aidl_instance_(MemtrackProxy::MemtrackAidlInstance()) {}
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ndk::ScopedAStatus MemtrackProxy::getMemory(int pid, MemtrackType type,
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std::vector<MemtrackRecord>* _aidl_return) {
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if (pid < 0) {
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return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
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}
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if (!MemtrackProxy::CheckPid(AIBinder_getCallingPid(), pid) &&
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!MemtrackProxy::CheckUid(AIBinder_getCallingUid())) {
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return ndk::ScopedAStatus::fromExceptionCodeWithMessage(
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EX_SECURITY,
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"Only AID_ROOT, AID_SYSTEM and AID_SHELL can request getMemory() for PIDs other "
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"than the calling PID");
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}
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if (type != MemtrackType::OTHER && type != MemtrackType::GL && type != MemtrackType::GRAPHICS &&
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type != MemtrackType::MULTIMEDIA && type != MemtrackType::CAMERA) {
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return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
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}
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_aidl_return->clear();
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if (memtrack_aidl_instance_) {
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return memtrack_aidl_instance_->getMemory(pid, type, _aidl_return);
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} else if (memtrack_hidl_instance_) {
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ndk::ScopedAStatus aidl_status;
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Return<void> ret = memtrack_hidl_instance_->getMemory(
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pid, static_cast<V1_0_hidl::MemtrackType>(type),
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[&_aidl_return, &aidl_status](V1_0_hidl::MemtrackStatus status,
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hidl_vec<V1_0_hidl::MemtrackRecord> records) {
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switch (status) {
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case V1_0_hidl::MemtrackStatus::SUCCESS:
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aidl_status = ndk::ScopedAStatus::ok();
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break;
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case V1_0_hidl::MemtrackStatus::MEMORY_TRACKING_NOT_SUPPORTED:
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[[fallthrough]];
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case V1_0_hidl::MemtrackStatus::TYPE_NOT_SUPPORTED:
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[[fallthrough]];
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default:
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aidl_status =
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ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
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return;
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}
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_aidl_return->resize(records.size());
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for (size_t i = 0; i < records.size(); i++) {
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if (!translate(records[i], &(*_aidl_return)[i])) {
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aidl_status = ndk::ScopedAStatus::fromExceptionCodeWithMessage(
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EX_SERVICE_SPECIFIC,
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"Failed to convert HIDL MemtrackRecord to AIDL");
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return;
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}
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}
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});
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// Check HIDL return
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if (!ret.isOk()) {
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const char* err_msg = "HIDL Memtrack::getMemory() failed";
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aidl_status =
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ndk::ScopedAStatus::fromExceptionCodeWithMessage(EX_SERVICE_SPECIFIC, err_msg);
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LOG(ERROR) << err_msg << ": " << ret.description();
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}
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return aidl_status;
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}
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return ndk::ScopedAStatus::fromExceptionCodeWithMessage(EX_NULL_POINTER,
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"Memtrack HAL service not available");
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}
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ndk::ScopedAStatus MemtrackProxy::getGpuDeviceInfo(std::vector<DeviceInfo>* _aidl_return) {
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if (!MemtrackProxy::CheckUid(AIBinder_getCallingUid())) {
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return ndk::ScopedAStatus::fromExceptionCodeWithMessage(EX_SECURITY,
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"Only AID_ROOT, AID_SYSTEM and AID_SHELL can request getGpuDeviceInfo()");
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}
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_aidl_return->clear();
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if (memtrack_aidl_instance_ ||
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(memtrack_aidl_instance_ = MemtrackProxy::MemtrackAidlInstance())) {
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return memtrack_aidl_instance_->getGpuDeviceInfo(_aidl_return);
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}
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return ndk::ScopedAStatus::fromExceptionCodeWithMessage(EX_NULL_POINTER,
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"Memtrack HAL service not available");
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}
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} // namespace memtrack
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} // namespace hardware
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} // namespace android
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} // namespace aidl
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