148 lines
4.1 KiB
C++
148 lines
4.1 KiB
C++
// Copyright (C) 2019 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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#include "device_info.h"
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#include <android-base/logging.h>
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#include <fs_mgr.h>
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#include <fs_mgr_overlayfs.h>
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#include <libfiemap/image_manager.h>
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namespace android {
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namespace snapshot {
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#ifdef LIBSNAPSHOT_USE_HAL
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using android::hardware::boot::V1_0::BoolResult;
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using android::hardware::boot::V1_0::CommandResult;
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#endif
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using namespace std::chrono_literals;
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using namespace std::string_literals;
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#ifdef __ANDROID_RECOVERY__
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constexpr bool kIsRecovery = true;
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#else
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constexpr bool kIsRecovery = false;
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#endif
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std::string DeviceInfo::GetMetadataDir() const {
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return "/metadata/ota"s;
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}
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std::string DeviceInfo::GetSlotSuffix() const {
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return fs_mgr_get_slot_suffix();
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}
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std::string DeviceInfo::GetOtherSlotSuffix() const {
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return fs_mgr_get_other_slot_suffix();
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}
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const android::fs_mgr::IPartitionOpener& DeviceInfo::GetPartitionOpener() const {
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return opener_;
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}
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std::string DeviceInfo::GetSuperDevice(uint32_t slot) const {
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return fs_mgr_get_super_partition_name(slot);
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}
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bool DeviceInfo::IsOverlayfsSetup() const {
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return fs_mgr_overlayfs_is_setup();
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}
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#ifdef LIBSNAPSHOT_USE_HAL
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bool DeviceInfo::EnsureBootHal() {
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if (!boot_control_) {
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auto hal = android::hardware::boot::V1_0::IBootControl::getService();
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if (!hal) {
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LOG(ERROR) << "Could not find IBootControl HAL";
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return false;
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}
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boot_control_ = android::hardware::boot::V1_1::IBootControl::castFrom(hal);
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if (!boot_control_) {
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LOG(ERROR) << "Could not find IBootControl 1.1 HAL";
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return false;
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}
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}
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return true;
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}
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#endif
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bool DeviceInfo::SetBootControlMergeStatus([[maybe_unused]] MergeStatus status) {
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#ifdef LIBSNAPSHOT_USE_HAL
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if (!EnsureBootHal()) {
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return false;
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}
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if (!boot_control_->setSnapshotMergeStatus(status)) {
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LOG(ERROR) << "Unable to set the snapshot merge status";
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return false;
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}
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return true;
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#else
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LOG(ERROR) << "HAL support not enabled.";
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return false;
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#endif
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}
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bool DeviceInfo::IsRecovery() const {
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return kIsRecovery;
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}
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bool DeviceInfo::IsFirstStageInit() const {
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return first_stage_init_;
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}
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bool DeviceInfo::SetSlotAsUnbootable([[maybe_unused]] unsigned int slot) {
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#ifdef LIBSNAPSHOT_USE_HAL
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if (!EnsureBootHal()) {
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return false;
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}
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CommandResult result = {};
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auto cb = [&](CommandResult r) -> void { result = r; };
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boot_control_->setSlotAsUnbootable(slot, cb);
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if (!result.success) {
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LOG(ERROR) << "Error setting slot " << slot << " unbootable: " << result.errMsg;
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return false;
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}
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return true;
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#else
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LOG(ERROR) << "HAL support not enabled.";
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return false;
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#endif
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}
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std::unique_ptr<android::fiemap::IImageManager> DeviceInfo::OpenImageManager() const {
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return IDeviceInfo::OpenImageManager("ota");
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}
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std::unique_ptr<android::fiemap::IImageManager> ISnapshotManager::IDeviceInfo::OpenImageManager(
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const std::string& gsid_dir) const {
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if (IsRecovery() || IsFirstStageInit()) {
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android::fiemap::ImageManager::DeviceInfo device_info = {
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.is_recovery = {IsRecovery()},
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};
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return android::fiemap::ImageManager::Open(gsid_dir, device_info);
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} else {
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// For now, use a preset timeout.
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return android::fiemap::IImageManager::Open(gsid_dir, 15000ms);
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}
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}
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android::dm::IDeviceMapper& DeviceInfo::GetDeviceMapper() {
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return android::dm::DeviceMapper::Instance();
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}
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} // namespace snapshot
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} // namespace android
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