0803ba0985
Since Android 10, new devices have been required to use FBE instead of FDE. Therefore, the FDE code is no longer needed. Remove most of cryptfs.cpp. A few parts of it need to be kept in order to support the dm-crypt method of adoptable storage encryption. Keep the FDE-specific binder methods stubbed out for now until their callers can be removed. Bug: 191796797 Change-Id: I90b1e4cacd2f3e5cce77a82a0af744fcc7da9400
1058 lines
34 KiB
C++
1058 lines
34 KiB
C++
/*
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* Copyright (C) 2017 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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#define ATRACE_TAG ATRACE_TAG_PACKAGE_MANAGER
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#include "VoldNativeService.h"
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#include <android-base/logging.h>
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#include <android-base/strings.h>
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#include <fs_mgr.h>
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#include <fscrypt/fscrypt.h>
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#include <private/android_filesystem_config.h>
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#include <utils/Trace.h>
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#include <stdio.h>
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#include <sys/vfs.h>
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#include <fstream>
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#include <thread>
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#include "Benchmark.h"
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#include "Checkpoint.h"
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#include "FsCrypt.h"
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#include "IdleMaint.h"
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#include "KeyStorage.h"
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#include "Keystore.h"
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#include "MetadataCrypt.h"
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#include "MoveStorage.h"
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#include "VoldNativeServiceValidation.h"
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#include "VoldUtil.h"
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#include "VolumeManager.h"
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#include "cryptfs.h"
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#include "incfs.h"
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using namespace std::literals;
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namespace android {
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namespace vold {
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namespace {
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constexpr const char* kDump = "android.permission.DUMP";
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constexpr auto kIncFsReadNoTimeoutMs = 100;
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static binder::Status error(const std::string& msg) {
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PLOG(ERROR) << msg;
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return binder::Status::fromServiceSpecificError(errno, String8(msg.c_str()));
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}
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static binder::Status translate(int status) {
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if (status == 0) {
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return binder::Status::ok();
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} else {
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return binder::Status::fromServiceSpecificError(status);
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}
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}
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static binder::Status translateBool(bool status) {
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if (status) {
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return binder::Status::ok();
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} else {
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return binder::Status::fromServiceSpecificError(status);
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}
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}
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#define ENFORCE_SYSTEM_OR_ROOT \
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{ \
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binder::Status status = CheckUidOrRoot(AID_SYSTEM); \
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if (!status.isOk()) { \
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return status; \
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} \
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}
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#define CHECK_ARGUMENT_ID(id) \
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{ \
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binder::Status status = CheckArgumentId((id)); \
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if (!status.isOk()) { \
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return status; \
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} \
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}
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#define CHECK_ARGUMENT_PATH(path) \
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{ \
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binder::Status status = CheckArgumentPath((path)); \
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if (!status.isOk()) { \
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return status; \
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} \
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}
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#define CHECK_ARGUMENT_HEX(hex) \
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{ \
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binder::Status status = CheckArgumentHex((hex)); \
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if (!status.isOk()) { \
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return status; \
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} \
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}
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#define ACQUIRE_LOCK \
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std::lock_guard<std::mutex> lock(VolumeManager::Instance()->getLock()); \
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ATRACE_CALL();
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#define ACQUIRE_CRYPT_LOCK \
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std::lock_guard<std::mutex> lock(VolumeManager::Instance()->getCryptLock()); \
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ATRACE_CALL();
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} // namespace
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status_t VoldNativeService::start() {
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IPCThreadState::self()->disableBackgroundScheduling(true);
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status_t ret = BinderService<VoldNativeService>::publish();
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if (ret != android::OK) {
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return ret;
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}
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sp<ProcessState> ps(ProcessState::self());
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ps->startThreadPool();
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ps->giveThreadPoolName();
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return android::OK;
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}
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status_t VoldNativeService::dump(int fd, const Vector<String16>& /* args */) {
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const binder::Status dump_permission = CheckPermission(kDump);
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if (!dump_permission.isOk()) {
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dprintf(fd, "%s\n", dump_permission.toString8().c_str());
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return PERMISSION_DENIED;
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}
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ACQUIRE_LOCK;
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dprintf(fd, "vold is happy!\n");
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return NO_ERROR;
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}
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binder::Status VoldNativeService::setListener(
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const android::sp<android::os::IVoldListener>& listener) {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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VolumeManager::Instance()->setListener(listener);
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return Ok();
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}
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binder::Status VoldNativeService::monitor() {
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ENFORCE_SYSTEM_OR_ROOT;
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// Simply acquire/release each lock for watchdog
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{ ACQUIRE_LOCK; }
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{ ACQUIRE_CRYPT_LOCK; }
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return Ok();
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}
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binder::Status VoldNativeService::reset() {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->reset());
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}
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binder::Status VoldNativeService::shutdown() {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->shutdown());
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}
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binder::Status VoldNativeService::abortFuse() {
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ENFORCE_SYSTEM_OR_ROOT;
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// if acquire lock, maybe lead to a deadlock if lock is held by a
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// thread that is blocked on a FUSE operation.
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// abort fuse doesn't need to access any state, so do not acquire lock
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return translate(VolumeManager::Instance()->abortFuse());
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}
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binder::Status VoldNativeService::onUserAdded(int32_t userId, int32_t userSerial) {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->onUserAdded(userId, userSerial));
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}
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binder::Status VoldNativeService::onUserRemoved(int32_t userId) {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->onUserRemoved(userId));
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}
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binder::Status VoldNativeService::onUserStarted(int32_t userId) {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->onUserStarted(userId));
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}
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binder::Status VoldNativeService::onUserStopped(int32_t userId) {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->onUserStopped(userId));
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}
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binder::Status VoldNativeService::addAppIds(const std::vector<std::string>& packageNames,
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const std::vector<int32_t>& appIds) {
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return Ok();
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}
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binder::Status VoldNativeService::addSandboxIds(const std::vector<int32_t>& appIds,
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const std::vector<std::string>& sandboxIds) {
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return Ok();
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}
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binder::Status VoldNativeService::onSecureKeyguardStateChanged(bool isShowing) {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->onSecureKeyguardStateChanged(isShowing));
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}
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binder::Status VoldNativeService::partition(const std::string& diskId, int32_t partitionType,
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int32_t ratio) {
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ENFORCE_SYSTEM_OR_ROOT;
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CHECK_ARGUMENT_ID(diskId);
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ACQUIRE_LOCK;
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auto disk = VolumeManager::Instance()->findDisk(diskId);
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if (disk == nullptr) {
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return error("Failed to find disk " + diskId);
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}
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switch (partitionType) {
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case PARTITION_TYPE_PUBLIC:
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return translate(disk->partitionPublic());
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case PARTITION_TYPE_PRIVATE:
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return translate(disk->partitionPrivate());
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case PARTITION_TYPE_MIXED:
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return translate(disk->partitionMixed(ratio));
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default:
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return error("Unknown type " + std::to_string(partitionType));
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}
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}
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binder::Status VoldNativeService::forgetPartition(const std::string& partGuid,
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const std::string& fsUuid) {
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ENFORCE_SYSTEM_OR_ROOT;
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CHECK_ARGUMENT_HEX(partGuid);
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CHECK_ARGUMENT_HEX(fsUuid);
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->forgetPartition(partGuid, fsUuid));
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}
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binder::Status VoldNativeService::mount(
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const std::string& volId, int32_t mountFlags, int32_t mountUserId,
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const android::sp<android::os::IVoldMountCallback>& callback) {
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ENFORCE_SYSTEM_OR_ROOT;
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CHECK_ARGUMENT_ID(volId);
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ACQUIRE_LOCK;
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auto vol = VolumeManager::Instance()->findVolume(volId);
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if (vol == nullptr) {
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return error("Failed to find volume " + volId);
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}
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vol->setMountFlags(mountFlags);
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vol->setMountUserId(mountUserId);
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vol->setMountCallback(callback);
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int res = vol->mount();
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vol->setMountCallback(nullptr);
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if (res != OK) {
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return translate(res);
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}
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return translate(OK);
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}
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binder::Status VoldNativeService::unmount(const std::string& volId) {
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ENFORCE_SYSTEM_OR_ROOT;
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CHECK_ARGUMENT_ID(volId);
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ACQUIRE_LOCK;
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auto vol = VolumeManager::Instance()->findVolume(volId);
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if (vol == nullptr) {
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return error("Failed to find volume " + volId);
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}
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return translate(vol->unmount());
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}
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binder::Status VoldNativeService::format(const std::string& volId, const std::string& fsType) {
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ENFORCE_SYSTEM_OR_ROOT;
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CHECK_ARGUMENT_ID(volId);
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ACQUIRE_LOCK;
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auto vol = VolumeManager::Instance()->findVolume(volId);
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if (vol == nullptr) {
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return error("Failed to find volume " + volId);
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}
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return translate(vol->format(fsType));
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}
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static binder::Status pathForVolId(const std::string& volId, std::string* path) {
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if (volId == "private" || volId == "null") {
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*path = "/data";
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} else {
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auto vol = VolumeManager::Instance()->findVolume(volId);
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if (vol == nullptr) {
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return error("Failed to find volume " + volId);
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}
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if (vol->getType() != VolumeBase::Type::kPrivate) {
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return error("Volume " + volId + " not private");
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}
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if (vol->getState() != VolumeBase::State::kMounted) {
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return error("Volume " + volId + " not mounted");
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}
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*path = vol->getPath();
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if (path->empty()) {
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return error("Volume " + volId + " missing path");
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}
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}
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return Ok();
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}
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binder::Status VoldNativeService::benchmark(
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const std::string& volId, const android::sp<android::os::IVoldTaskListener>& listener) {
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ENFORCE_SYSTEM_OR_ROOT;
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CHECK_ARGUMENT_ID(volId);
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ACQUIRE_LOCK;
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std::string path;
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auto status = pathForVolId(volId, &path);
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if (!status.isOk()) return status;
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std::thread([=]() { android::vold::Benchmark(path, listener); }).detach();
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return Ok();
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}
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binder::Status VoldNativeService::moveStorage(
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const std::string& fromVolId, const std::string& toVolId,
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const android::sp<android::os::IVoldTaskListener>& listener) {
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ENFORCE_SYSTEM_OR_ROOT;
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CHECK_ARGUMENT_ID(fromVolId);
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CHECK_ARGUMENT_ID(toVolId);
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ACQUIRE_LOCK;
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auto fromVol = VolumeManager::Instance()->findVolume(fromVolId);
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auto toVol = VolumeManager::Instance()->findVolume(toVolId);
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if (fromVol == nullptr) {
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return error("Failed to find volume " + fromVolId);
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} else if (toVol == nullptr) {
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return error("Failed to find volume " + toVolId);
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}
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std::thread([=]() { android::vold::MoveStorage(fromVol, toVol, listener); }).detach();
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return Ok();
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}
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binder::Status VoldNativeService::remountUid(int32_t uid, int32_t remountMode) {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->remountUid(uid, remountMode));
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}
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binder::Status VoldNativeService::remountAppStorageDirs(int uid, int pid,
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const std::vector<std::string>& packageNames) {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->handleAppStorageDirs(uid, pid,
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false /* doUnmount */, packageNames));
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}
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binder::Status VoldNativeService::unmountAppStorageDirs(int uid, int pid,
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const std::vector<std::string>& packageNames) {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->handleAppStorageDirs(uid, pid,
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true /* doUnmount */, packageNames));
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}
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binder::Status VoldNativeService::setupAppDir(const std::string& path, int32_t appUid) {
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ENFORCE_SYSTEM_OR_ROOT;
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CHECK_ARGUMENT_PATH(path);
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->setupAppDir(path, appUid));
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}
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binder::Status VoldNativeService::ensureAppDirsCreated(const std::vector<std::string>& paths,
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int32_t appUid) {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->ensureAppDirsCreated(paths, appUid));
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}
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binder::Status VoldNativeService::fixupAppDir(const std::string& path, int32_t appUid) {
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ENFORCE_SYSTEM_OR_ROOT;
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CHECK_ARGUMENT_PATH(path);
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->fixupAppDir(path, appUid));
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}
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binder::Status VoldNativeService::createObb(const std::string& sourcePath,
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const std::string& sourceKey, int32_t ownerGid,
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std::string* _aidl_return) {
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ENFORCE_SYSTEM_OR_ROOT;
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CHECK_ARGUMENT_PATH(sourcePath);
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CHECK_ARGUMENT_HEX(sourceKey);
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ACQUIRE_LOCK;
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return translate(
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VolumeManager::Instance()->createObb(sourcePath, sourceKey, ownerGid, _aidl_return));
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}
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binder::Status VoldNativeService::destroyObb(const std::string& volId) {
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ENFORCE_SYSTEM_OR_ROOT;
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CHECK_ARGUMENT_ID(volId);
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->destroyObb(volId));
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}
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binder::Status VoldNativeService::createStubVolume(const std::string& sourcePath,
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const std::string& mountPath,
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const std::string& fsType,
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const std::string& fsUuid,
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const std::string& fsLabel, int32_t flags,
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std::string* _aidl_return) {
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ENFORCE_SYSTEM_OR_ROOT;
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CHECK_ARGUMENT_PATH(sourcePath);
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CHECK_ARGUMENT_PATH(mountPath);
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CHECK_ARGUMENT_HEX(fsUuid);
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// Label limitation seems to be different between fs (including allowed characters), so checking
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// is quite meaningless.
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->createStubVolume(
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sourcePath, mountPath, fsType, fsUuid, fsLabel, flags, _aidl_return));
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}
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binder::Status VoldNativeService::destroyStubVolume(const std::string& volId) {
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ENFORCE_SYSTEM_OR_ROOT;
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CHECK_ARGUMENT_ID(volId);
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->destroyStubVolume(volId));
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}
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binder::Status VoldNativeService::fstrim(
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int32_t fstrimFlags, const android::sp<android::os::IVoldTaskListener>& listener) {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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std::thread([=]() { android::vold::Trim(listener); }).detach();
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return Ok();
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}
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binder::Status VoldNativeService::runIdleMaint(
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const android::sp<android::os::IVoldTaskListener>& listener) {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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std::thread([=]() { android::vold::RunIdleMaint(listener); }).detach();
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return Ok();
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}
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binder::Status VoldNativeService::abortIdleMaint(
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const android::sp<android::os::IVoldTaskListener>& listener) {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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std::thread([=]() { android::vold::AbortIdleMaint(listener); }).detach();
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return Ok();
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}
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binder::Status VoldNativeService::mountAppFuse(int32_t uid, int32_t mountId,
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android::base::unique_fd* _aidl_return) {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->mountAppFuse(uid, mountId, _aidl_return));
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}
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binder::Status VoldNativeService::unmountAppFuse(int32_t uid, int32_t mountId) {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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return translate(VolumeManager::Instance()->unmountAppFuse(uid, mountId));
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}
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binder::Status VoldNativeService::openAppFuseFile(int32_t uid, int32_t mountId, int32_t fileId,
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int32_t flags,
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android::base::unique_fd* _aidl_return) {
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ENFORCE_SYSTEM_OR_ROOT;
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ACQUIRE_LOCK;
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int fd = VolumeManager::Instance()->openAppFuseFile(uid, mountId, fileId, flags);
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if (fd == -1) {
|
|
return error("Failed to open AppFuse file for uid: " + std::to_string(uid) +
|
|
" mountId: " + std::to_string(mountId) + " fileId: " + std::to_string(fileId) +
|
|
" flags: " + std::to_string(flags));
|
|
}
|
|
|
|
*_aidl_return = android::base::unique_fd(fd);
|
|
return Ok();
|
|
}
|
|
|
|
// TODO(b/191796797) remove this once caller is removed
|
|
binder::Status VoldNativeService::fdeCheckPassword(const std::string& password) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
SLOGE("fdeCheckPassword is no longer supported");
|
|
return translate(-1);
|
|
}
|
|
|
|
// TODO(b/191796797) remove this once caller is removed
|
|
binder::Status VoldNativeService::fdeRestart() {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
SLOGE("fdeRestart is no longer supported");
|
|
return Ok();
|
|
}
|
|
|
|
// TODO(b/191796797) remove this once caller is removed
|
|
#define CRYPTO_COMPLETE_NOT_ENCRYPTED 1
|
|
binder::Status VoldNativeService::fdeComplete(int32_t* _aidl_return) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
SLOGE("fdeComplete is no longer supported");
|
|
*_aidl_return = CRYPTO_COMPLETE_NOT_ENCRYPTED;
|
|
return Ok();
|
|
}
|
|
|
|
// TODO(b/191796797) remove this once caller is removed
|
|
binder::Status VoldNativeService::fdeEnable(int32_t passwordType, const std::string& password,
|
|
int32_t encryptionFlags) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
SLOGE("fdeEnable is no longer supported");
|
|
return translate(-1);
|
|
}
|
|
|
|
// TODO(b/191796797) remove this once caller is removed
|
|
binder::Status VoldNativeService::fdeChangePassword(int32_t passwordType,
|
|
const std::string& password) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
SLOGE("fdeChangePassword is no longer supported");
|
|
return translate(-1);
|
|
}
|
|
|
|
// TODO(b/191796797) remove this once caller is removed
|
|
binder::Status VoldNativeService::fdeVerifyPassword(const std::string& password) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
SLOGE("fdeVerifyPassword is no longer supported");
|
|
return translate(-1);
|
|
}
|
|
|
|
// TODO(b/191796797) remove this once caller is removed
|
|
binder::Status VoldNativeService::fdeGetField(const std::string& key, std::string* _aidl_return) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
SLOGE("fdeGetField is no longer supported");
|
|
return translate(-1);
|
|
}
|
|
|
|
// TODO(b/191796797) remove this once caller is removed
|
|
binder::Status VoldNativeService::fdeSetField(const std::string& key, const std::string& value) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
SLOGE("fdeSetField is no longer supported");
|
|
return translate(-1);
|
|
}
|
|
|
|
// TODO(b/191796797) remove this once caller is removed
|
|
binder::Status VoldNativeService::fdeGetPasswordType(int32_t* _aidl_return) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
SLOGE("fdeGetPasswordType is no longer supported");
|
|
*_aidl_return = -1;
|
|
return Ok();
|
|
}
|
|
|
|
// TODO(b/191796797) remove this once caller is removed
|
|
binder::Status VoldNativeService::fdeGetPassword(std::string* _aidl_return) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
SLOGE("fdeGetPassword is no longer supported");
|
|
return Ok();
|
|
}
|
|
|
|
// TODO(b/191796797) remove this once caller is removed
|
|
binder::Status VoldNativeService::fdeClearPassword() {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
SLOGE("fdeClearPassword is no longer supported");
|
|
return Ok();
|
|
}
|
|
|
|
binder::Status VoldNativeService::fbeEnable() {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
return translateBool(fscrypt_initialize_systemwide_keys());
|
|
}
|
|
|
|
// TODO(b/191796797) remove this once caller is removed
|
|
binder::Status VoldNativeService::mountDefaultEncrypted() {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
SLOGE("mountDefaultEncrypted is no longer supported");
|
|
return Ok();
|
|
}
|
|
|
|
binder::Status VoldNativeService::initUser0() {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
return translateBool(fscrypt_init_user0());
|
|
}
|
|
|
|
// TODO(b/191796797) remove this once caller is removed
|
|
binder::Status VoldNativeService::isConvertibleToFbe(bool* _aidl_return) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
SLOGE("isConvertibleToFbe is no longer supported");
|
|
*_aidl_return = false;
|
|
return Ok();
|
|
}
|
|
|
|
binder::Status VoldNativeService::mountFstab(const std::string& blkDevice,
|
|
const std::string& mountPoint) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_LOCK;
|
|
|
|
return translateBool(
|
|
fscrypt_mount_metadata_encrypted(blkDevice, mountPoint, false, false, "null"));
|
|
}
|
|
|
|
binder::Status VoldNativeService::encryptFstab(const std::string& blkDevice,
|
|
const std::string& mountPoint, bool shouldFormat,
|
|
const std::string& fsType) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_LOCK;
|
|
|
|
return translateBool(
|
|
fscrypt_mount_metadata_encrypted(blkDevice, mountPoint, true, shouldFormat, fsType));
|
|
}
|
|
|
|
binder::Status VoldNativeService::setStorageBindingSeed(const std::vector<uint8_t>& seed) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
return translateBool(setKeyStorageBindingSeed(seed));
|
|
}
|
|
|
|
binder::Status VoldNativeService::createUserKey(int32_t userId, int32_t userSerial,
|
|
bool ephemeral) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
return translateBool(fscrypt_vold_create_user_key(userId, userSerial, ephemeral));
|
|
}
|
|
|
|
binder::Status VoldNativeService::destroyUserKey(int32_t userId) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
return translateBool(fscrypt_destroy_user_key(userId));
|
|
}
|
|
|
|
static bool token_empty(const std::string& token) {
|
|
return token.size() == 0 || token == "!";
|
|
}
|
|
|
|
binder::Status VoldNativeService::addUserKeyAuth(int32_t userId, int32_t userSerial,
|
|
const std::string& token,
|
|
const std::string& secret) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
if (!token_empty(token)) {
|
|
LOG(ERROR) << "Vold doesn't use auth tokens, but non-empty token passed to addUserKeyAuth.";
|
|
return binder::Status::fromServiceSpecificError(-EINVAL);
|
|
}
|
|
|
|
return translateBool(fscrypt_add_user_key_auth(userId, userSerial, secret));
|
|
}
|
|
|
|
binder::Status VoldNativeService::clearUserKeyAuth(int32_t userId, int32_t userSerial,
|
|
const std::string& token,
|
|
const std::string& secret) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
if (!token_empty(token)) {
|
|
LOG(ERROR)
|
|
<< "Vold doesn't use auth tokens, but non-empty token passed to clearUserKeyAuth.";
|
|
return binder::Status::fromServiceSpecificError(-EINVAL);
|
|
}
|
|
|
|
return translateBool(fscrypt_clear_user_key_auth(userId, userSerial, secret));
|
|
}
|
|
|
|
binder::Status VoldNativeService::fixateNewestUserKeyAuth(int32_t userId) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
return translateBool(fscrypt_fixate_newest_user_key_auth(userId));
|
|
}
|
|
|
|
binder::Status VoldNativeService::getUnlockedUsers(std::vector<int>* _aidl_return) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
*_aidl_return = fscrypt_get_unlocked_users();
|
|
return Ok();
|
|
}
|
|
|
|
binder::Status VoldNativeService::unlockUserKey(int32_t userId, int32_t userSerial,
|
|
const std::string& token,
|
|
const std::string& secret) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
if (!token_empty(token)) {
|
|
LOG(ERROR) << "Vold doesn't use auth tokens, but non-empty token passed to unlockUserKey.";
|
|
return binder::Status::fromServiceSpecificError(-EINVAL);
|
|
}
|
|
|
|
return translateBool(fscrypt_unlock_user_key(userId, userSerial, secret));
|
|
}
|
|
|
|
binder::Status VoldNativeService::lockUserKey(int32_t userId) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_CRYPT_LOCK;
|
|
|
|
return translateBool(fscrypt_lock_user_key(userId));
|
|
}
|
|
|
|
binder::Status VoldNativeService::prepareUserStorage(const std::optional<std::string>& uuid,
|
|
int32_t userId, int32_t userSerial,
|
|
int32_t flags) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
std::string empty_string = "";
|
|
auto uuid_ = uuid ? *uuid : empty_string;
|
|
CHECK_ARGUMENT_HEX(uuid_);
|
|
|
|
ACQUIRE_CRYPT_LOCK;
|
|
return translateBool(fscrypt_prepare_user_storage(uuid_, userId, userSerial, flags));
|
|
}
|
|
|
|
binder::Status VoldNativeService::destroyUserStorage(const std::optional<std::string>& uuid,
|
|
int32_t userId, int32_t flags) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
std::string empty_string = "";
|
|
auto uuid_ = uuid ? *uuid : empty_string;
|
|
CHECK_ARGUMENT_HEX(uuid_);
|
|
|
|
ACQUIRE_CRYPT_LOCK;
|
|
return translateBool(fscrypt_destroy_user_storage(uuid_, userId, flags));
|
|
}
|
|
|
|
binder::Status VoldNativeService::prepareSandboxForApp(const std::string& packageName,
|
|
int32_t appId, const std::string& sandboxId,
|
|
int32_t userId) {
|
|
return Ok();
|
|
}
|
|
|
|
binder::Status VoldNativeService::destroySandboxForApp(const std::string& packageName,
|
|
const std::string& sandboxId,
|
|
int32_t userId) {
|
|
return Ok();
|
|
}
|
|
|
|
binder::Status VoldNativeService::startCheckpoint(int32_t retry) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_LOCK;
|
|
|
|
return cp_startCheckpoint(retry);
|
|
}
|
|
|
|
binder::Status VoldNativeService::needsRollback(bool* _aidl_return) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_LOCK;
|
|
|
|
*_aidl_return = cp_needsRollback();
|
|
return Ok();
|
|
}
|
|
|
|
binder::Status VoldNativeService::needsCheckpoint(bool* _aidl_return) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_LOCK;
|
|
|
|
*_aidl_return = cp_needsCheckpoint();
|
|
return Ok();
|
|
}
|
|
|
|
binder::Status VoldNativeService::isCheckpointing(bool* _aidl_return) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_LOCK;
|
|
|
|
*_aidl_return = cp_isCheckpointing();
|
|
return Ok();
|
|
}
|
|
|
|
binder::Status VoldNativeService::commitChanges() {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_LOCK;
|
|
|
|
return cp_commitChanges();
|
|
}
|
|
|
|
binder::Status VoldNativeService::prepareCheckpoint() {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_LOCK;
|
|
|
|
return cp_prepareCheckpoint();
|
|
}
|
|
|
|
binder::Status VoldNativeService::restoreCheckpoint(const std::string& mountPoint) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
CHECK_ARGUMENT_PATH(mountPoint);
|
|
ACQUIRE_LOCK;
|
|
|
|
return cp_restoreCheckpoint(mountPoint);
|
|
}
|
|
|
|
binder::Status VoldNativeService::restoreCheckpointPart(const std::string& mountPoint, int count) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
CHECK_ARGUMENT_PATH(mountPoint);
|
|
ACQUIRE_LOCK;
|
|
|
|
return cp_restoreCheckpoint(mountPoint, count);
|
|
}
|
|
|
|
binder::Status VoldNativeService::markBootAttempt() {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_LOCK;
|
|
|
|
return cp_markBootAttempt();
|
|
}
|
|
|
|
binder::Status VoldNativeService::abortChanges(const std::string& message, bool retry) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_LOCK;
|
|
|
|
cp_abortChanges(message, retry);
|
|
return Ok();
|
|
}
|
|
|
|
binder::Status VoldNativeService::supportsCheckpoint(bool* _aidl_return) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_LOCK;
|
|
|
|
return cp_supportsCheckpoint(*_aidl_return);
|
|
}
|
|
|
|
binder::Status VoldNativeService::supportsBlockCheckpoint(bool* _aidl_return) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_LOCK;
|
|
|
|
return cp_supportsBlockCheckpoint(*_aidl_return);
|
|
}
|
|
|
|
binder::Status VoldNativeService::supportsFileCheckpoint(bool* _aidl_return) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_LOCK;
|
|
|
|
return cp_supportsFileCheckpoint(*_aidl_return);
|
|
}
|
|
|
|
binder::Status VoldNativeService::resetCheckpoint() {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_LOCK;
|
|
|
|
cp_resetCheckpoint();
|
|
return Ok();
|
|
}
|
|
|
|
static void initializeIncFs() {
|
|
// Obtaining IncFS features triggers initialization of IncFS.
|
|
incfs::features();
|
|
}
|
|
|
|
// This is missing from the kernel UAPI headers.
|
|
#define ST_RDONLY 0x0001
|
|
|
|
// FDE devices run the post-fs-data trigger (and hence also earlyBootEnded)
|
|
// multiple times, sometimes prior to the real /data being mounted. That causes
|
|
// keystore2 to try to open a file in /data, causing it to panic or have to be
|
|
// killed by vold later, causing problems (vold failing to connect to keystore2,
|
|
// or keystore2 operations erroring out later). As a workaround to keep FDE
|
|
// working, ignore these too-early calls to earlyBootEnded.
|
|
//
|
|
// This can be removed when support for FDE is removed.
|
|
static bool IgnoreEarlyBootEnded() {
|
|
// The statfs("/data") below should be sufficient by itself, but to be safe
|
|
// we also explicitly return false on FBE devices. (This really should be
|
|
// ro.crypto.type != "block" for "non-FDE devices", but on FDE devices this
|
|
// is sometimes called before ro.crypto.type gets set.)
|
|
if (fscrypt_is_native()) return false;
|
|
|
|
struct statfs buf;
|
|
if (statfs(DATA_MNT_POINT, &buf) != 0) {
|
|
PLOG(ERROR) << "statfs(\"/data\") failed";
|
|
return false;
|
|
}
|
|
if (buf.f_type == TMPFS_MAGIC || (buf.f_flags & ST_RDONLY)) {
|
|
LOG(INFO) << "Ignoring earlyBootEnded since real /data isn't mounted yet";
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
binder::Status VoldNativeService::earlyBootEnded() {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_LOCK;
|
|
|
|
if (IgnoreEarlyBootEnded()) return Ok();
|
|
|
|
initializeIncFs();
|
|
Keystore::earlyBootEnded();
|
|
return Ok();
|
|
}
|
|
|
|
binder::Status VoldNativeService::incFsEnabled(bool* _aidl_return) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
|
|
*_aidl_return = incfs::enabled();
|
|
return Ok();
|
|
}
|
|
|
|
binder::Status VoldNativeService::mountIncFs(
|
|
const std::string& backingPath, const std::string& targetDir, int32_t flags,
|
|
const std::string& sysfsName,
|
|
::android::os::incremental::IncrementalFileSystemControlParcel* _aidl_return) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
CHECK_ARGUMENT_PATH(backingPath);
|
|
CHECK_ARGUMENT_PATH(targetDir);
|
|
|
|
auto control = incfs::mount(backingPath, targetDir,
|
|
{.flags = IncFsMountFlags(flags),
|
|
// Mount with read timeouts.
|
|
.defaultReadTimeoutMs = INCFS_DEFAULT_READ_TIMEOUT_MS,
|
|
// Mount with read logs disabled.
|
|
.readLogBufferPages = 0,
|
|
.sysfsName = sysfsName.c_str()});
|
|
if (!control) {
|
|
return translate(-errno);
|
|
}
|
|
auto fds = control.releaseFds();
|
|
using android::base::unique_fd;
|
|
_aidl_return->cmd.reset(unique_fd(fds[CMD].release()));
|
|
_aidl_return->pendingReads.reset(unique_fd(fds[PENDING_READS].release()));
|
|
_aidl_return->log.reset(unique_fd(fds[LOGS].release()));
|
|
if (fds[BLOCKS_WRITTEN].ok()) {
|
|
_aidl_return->blocksWritten.emplace(unique_fd(fds[BLOCKS_WRITTEN].release()));
|
|
}
|
|
return Ok();
|
|
}
|
|
|
|
binder::Status VoldNativeService::unmountIncFs(const std::string& dir) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
CHECK_ARGUMENT_PATH(dir);
|
|
|
|
return translate(incfs::unmount(dir));
|
|
}
|
|
|
|
binder::Status VoldNativeService::setIncFsMountOptions(
|
|
const ::android::os::incremental::IncrementalFileSystemControlParcel& control,
|
|
bool enableReadLogs, bool enableReadTimeouts, const std::string& sysfsName) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
|
|
auto incfsControl =
|
|
incfs::createControl(control.cmd.get(), control.pendingReads.get(), control.log.get(),
|
|
control.blocksWritten ? control.blocksWritten->get() : -1);
|
|
auto cleanupFunc = [](auto incfsControl) {
|
|
for (auto& fd : incfsControl->releaseFds()) {
|
|
(void)fd.release();
|
|
}
|
|
};
|
|
auto cleanup =
|
|
std::unique_ptr<incfs::Control, decltype(cleanupFunc)>(&incfsControl, cleanupFunc);
|
|
|
|
constexpr auto minReadLogBufferPages = INCFS_DEFAULT_PAGE_READ_BUFFER_PAGES;
|
|
constexpr auto maxReadLogBufferPages = 8 * INCFS_DEFAULT_PAGE_READ_BUFFER_PAGES;
|
|
auto options = incfs::MountOptions{
|
|
.defaultReadTimeoutMs =
|
|
enableReadTimeouts ? INCFS_DEFAULT_READ_TIMEOUT_MS : kIncFsReadNoTimeoutMs,
|
|
.readLogBufferPages = enableReadLogs ? maxReadLogBufferPages : 0,
|
|
.sysfsName = sysfsName.c_str()};
|
|
|
|
for (;;) {
|
|
const auto error = incfs::setOptions(incfsControl, options);
|
|
if (!error) {
|
|
return Ok();
|
|
}
|
|
if (!enableReadLogs || error != -ENOMEM) {
|
|
return binder::Status::fromServiceSpecificError(error);
|
|
}
|
|
// In case of memory allocation error retry with a smaller buffer.
|
|
options.readLogBufferPages /= 2;
|
|
if (options.readLogBufferPages < minReadLogBufferPages) {
|
|
return binder::Status::fromServiceSpecificError(error);
|
|
}
|
|
}
|
|
// unreachable, but makes the compiler happy
|
|
return Ok();
|
|
}
|
|
|
|
binder::Status VoldNativeService::bindMount(const std::string& sourceDir,
|
|
const std::string& targetDir) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
CHECK_ARGUMENT_PATH(sourceDir);
|
|
CHECK_ARGUMENT_PATH(targetDir);
|
|
|
|
return translate(incfs::bindMount(sourceDir, targetDir));
|
|
}
|
|
|
|
binder::Status VoldNativeService::destroyDsuMetadataKey(const std::string& dsuSlot) {
|
|
ENFORCE_SYSTEM_OR_ROOT;
|
|
ACQUIRE_LOCK;
|
|
|
|
return translateBool(destroy_dsu_metadata_key(dsuSlot));
|
|
}
|
|
|
|
} // namespace vold
|
|
} // namespace android
|