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