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204 lines
7.9 KiB
204 lines
7.9 KiB
/*
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* Copyright (C) 2018 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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#ifndef ANDROID_APEXD_APEXD_H_
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#define ANDROID_APEXD_APEXD_H_
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#include <ostream>
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#include <string>
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#include <vector>
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#include <android-base/macros.h>
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#include <android-base/result.h>
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#include "apex_constants.h"
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#include "apex_database.h"
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#include "apex_file.h"
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#include "apex_file_repository.h"
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#include "apexd_session.h"
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namespace android {
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namespace apex {
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// A structure containing all the values that might need to be injected for
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// testing (e.g. apexd status property, etc.)
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//
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// Ideally we want to introduce Apexd class and use dependency injection for
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// such values, but that will require a sizeable refactoring. For the time being
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// this config should do the trick.
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struct ApexdConfig {
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const char* apex_status_sysprop;
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std::vector<std::string> apex_built_in_dirs;
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const char* active_apex_data_dir;
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const char* decompression_dir;
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const char* ota_reserved_dir;
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const char* apex_hash_tree_dir;
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const char* staged_session_dir;
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};
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static const ApexdConfig kDefaultConfig = {
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kApexStatusSysprop, kApexPackageBuiltinDirs, kActiveApexPackagesDataDir,
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kApexDecompressedDir, kOtaReservedDir, kApexHashTreeDir,
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kStagedSessionsDir,
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};
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class CheckpointInterface;
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void SetConfig(const ApexdConfig& config);
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// Exposed only for testing.
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android::base::Result<void> Unmount(
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const MountedApexDatabase::MountedApexData& data, bool deferred);
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android::base::Result<void> ResumeRevertIfNeeded();
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android::base::Result<void> PreinstallPackages(
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const std::vector<std::string>& paths) WARN_UNUSED;
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android::base::Result<void> PostinstallPackages(
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const std::vector<std::string>& paths) WARN_UNUSED;
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android::base::Result<void> StagePackages(
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const std::vector<std::string>& tmpPaths) WARN_UNUSED;
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android::base::Result<void> UnstagePackages(
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const std::vector<std::string>& paths) WARN_UNUSED;
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android::base::Result<std::vector<ApexFile>> SubmitStagedSession(
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const int session_id, const std::vector<int>& child_session_ids,
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const bool has_rollback_enabled, const bool is_rollback,
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const int rollback_id) WARN_UNUSED;
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android::base::Result<void> MarkStagedSessionReady(const int session_id)
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WARN_UNUSED;
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android::base::Result<void> MarkStagedSessionSuccessful(const int session_id)
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WARN_UNUSED;
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// Only only of the parameters should be passed during revert
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android::base::Result<void> RevertActiveSessions(
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const std::string& crashing_native_process,
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const std::string& error_message);
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// Only only of the parameters should be passed during revert
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android::base::Result<void> RevertActiveSessionsAndReboot(
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const std::string& crashing_native_process,
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const std::string& error_message);
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android::base::Result<void> ActivatePackage(const std::string& full_path)
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WARN_UNUSED;
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android::base::Result<void> DeactivatePackage(const std::string& full_path)
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WARN_UNUSED;
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std::vector<ApexFile> GetActivePackages();
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android::base::Result<ApexFile> GetActivePackage(
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const std::string& package_name);
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std::vector<ApexFile> GetFactoryPackages();
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android::base::Result<void> AbortStagedSession(const int session_id);
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android::base::Result<void> SnapshotCeData(const int user_id,
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const int rollback_id,
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const std::string& apex_name);
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android::base::Result<void> RestoreCeData(const int user_id,
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const int rollback_id,
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const std::string& apex_name);
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android::base::Result<void> DestroyDeSnapshots(const int rollback_id);
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android::base::Result<void> DestroyCeSnapshots(const int user_id,
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const int rollback_id);
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android::base::Result<void> DestroyCeSnapshotsNotSpecified(
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int user_id, const std::vector<int>& retain_rollback_ids);
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int OnBootstrap();
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// Sets the values of gVoldService and gInFsCheckpointMode.
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void InitializeVold(CheckpointInterface* checkpoint_service);
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// Initializes in-memory state (e.g. pre-installed data, activated apexes).
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// Must be called first before calling any other boot sequence related function.
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void Initialize(CheckpointInterface* checkpoint_service);
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// Initializes data apex as in-memory state. Should be called only if we are
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// not booting, since initialization timing is different when booting
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void InitializeDataApex();
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// Migrates sessions from /data/apex/session to /metadata/session.i
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// Must only be called during boot (i.e apexd.status is not "ready" or
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// "activated").
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android::base::Result<void> MigrateSessionsDirIfNeeded();
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// Apex activation logic. Scans staged apex sessions and activates apexes.
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// Must only be called during boot (i.e apexd.status is not "ready" or
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// "activated").
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void OnStart();
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// For every package X, there can be at most two APEX, pre-installed vs
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// installed on data. We decide which ones should be activated and return them
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// as a list
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std::vector<ApexFileRef> SelectApexForActivation(
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const std::unordered_map<std::string, std::vector<ApexFileRef>>& all_apex,
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const ApexFileRepository& instance);
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std::vector<ApexFile> ProcessCompressedApex(
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const std::vector<ApexFileRef>& compressed_apex, bool is_ota_chroot);
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// Validate |apex| is same as |capex|
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android::base::Result<void> ValidateDecompressedApex(const ApexFile& capex,
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const ApexFile& apex);
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// Notifies system that apexes are activated by setting apexd.status property to
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// "activated".
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// Must only be called during boot (i.e. apexd.status is not "ready" or
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// "activated").
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void OnAllPackagesActivated(bool is_bootstrap);
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// Notifies system that apexes are ready by setting apexd.status property to
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// "ready".
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// Must only be called during boot (i.e. apexd.status is not "ready" or
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// "activated").
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void OnAllPackagesReady();
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void OnBootCompleted();
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// Exposed for testing
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void RemoveInactiveDataApex();
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void BootCompletedCleanup();
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int SnapshotOrRestoreDeUserData();
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int UnmountAll();
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android::base::Result<MountedApexDatabase::MountedApexData>
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GetTempMountedApexData(const std::string& package);
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// Optimistically tries to remount as many APEX packages as possible.
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// For more documentation see corresponding binder call in IApexService.aidl.
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android::base::Result<void> RemountPackages();
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// Exposed for unit tests
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android::base::Result<bool> ShouldAllocateSpaceForDecompression(
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const std::string& new_apex_name, int64_t new_apex_version,
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const ApexFileRepository& instance);
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void CollectApexInfoList(std::ostream& os,
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const std::vector<ApexFile>& active_apexs,
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const std::vector<ApexFile>& inactive_apexs);
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// Reserve |size| bytes in |dest_dir| by creating a zero-filled file
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android::base::Result<void> ReserveSpaceForCompressedApex(
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int64_t size, const std::string& dest_dir);
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// Activates apexes in otapreot_chroot environment.
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// TODO(b/172911822): support compressed apexes.
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int OnOtaChrootBootstrap();
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// Activates flattened apexes in otapreopt_chroot environment.
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int OnOtaChrootBootstrapFlattenedApex();
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android::apex::MountedApexDatabase& GetApexDatabaseForTesting();
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// Performs a non-staged install of an APEX specified by |package_path|.
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// TODO(ioffe): add more documentation.
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android::base::Result<ApexFile> InstallPackage(const std::string& package_path);
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} // namespace apex
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} // namespace android
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#endif // ANDROID_APEXD_APEXD_H_
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