| /* |
| ** Copyright 2008, 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 "InstalldNativeService.h" |
| |
| #define ATRACE_TAG ATRACE_TAG_PACKAGE_MANAGER |
| |
| #include <algorithm> |
| #include <errno.h> |
| #include <fstream> |
| #include <fts.h> |
| #include <functional> |
| #include <inttypes.h> |
| #include <regex> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/capability.h> |
| #include <sys/file.h> |
| #include <sys/ioctl.h> |
| #include <sys/mman.h> |
| #include <sys/resource.h> |
| #include <sys/stat.h> |
| #include <sys/statvfs.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <sys/xattr.h> |
| #include <unistd.h> |
| |
| #include <android-base/file.h> |
| #include <android-base/logging.h> |
| #include <android-base/properties.h> |
| #include <android-base/scopeguard.h> |
| #include <android-base/stringprintf.h> |
| #include <android-base/strings.h> |
| #include <android-base/unique_fd.h> |
| #include <cutils/ashmem.h> |
| #include <cutils/fs.h> |
| #include <cutils/properties.h> |
| #include <cutils/sched_policy.h> |
| #include <log/log.h> // TODO: Move everything to base/logging. |
| #include <logwrap/logwrap.h> |
| #include <private/android_filesystem_config.h> |
| #include <selinux/android.h> |
| #include <system/thread_defs.h> |
| #include <utils/Trace.h> |
| |
| #include "dexopt.h" |
| #include "globals.h" |
| #include "installd_deps.h" |
| #include "otapreopt_utils.h" |
| #include "utils.h" |
| #include "view_compiler.h" |
| |
| #include "CacheTracker.h" |
| #include "MatchExtensionGen.h" |
| #include "QuotaUtils.h" |
| |
| #ifndef LOG_TAG |
| #define LOG_TAG "installd" |
| #endif |
| |
| using android::base::StringPrintf; |
| using std::endl; |
| |
| namespace android { |
| namespace installd { |
| |
| // An uuid used in unit tests. |
| static constexpr const char* kTestUuid = "TEST"; |
| |
| static constexpr const mode_t kRollbackFolderMode = 0700; |
| |
| static constexpr const char* kCpPath = "/system/bin/cp"; |
| static constexpr const char* kXattrDefault = "user.default"; |
| |
| static constexpr const int MIN_RESTRICTED_HOME_SDK_VERSION = 24; // > M |
| |
| static constexpr const char* PKG_LIB_POSTFIX = "/lib"; |
| static constexpr const char* CACHE_DIR_POSTFIX = "/cache"; |
| static constexpr const char* CODE_CACHE_DIR_POSTFIX = "/code_cache"; |
| |
| static constexpr const char *kIdMapPath = "/system/bin/idmap"; |
| static constexpr const char* IDMAP_PREFIX = "/data/resource-cache/"; |
| static constexpr const char* IDMAP_SUFFIX = "@idmap"; |
| |
| // fsverity assumes the page size is always 4096. If not, the feature can not be |
| // enabled. |
| static constexpr int kVerityPageSize = 4096; |
| static constexpr size_t kSha256Size = 32; |
| static constexpr const char* kPropApkVerityMode = "ro.apk_verity.mode"; |
| |
| namespace { |
| |
| constexpr const char* kDump = "android.permission.DUMP"; |
| |
| static binder::Status ok() { |
| return binder::Status::ok(); |
| } |
| |
| static binder::Status exception(uint32_t code, const std::string& msg) { |
| LOG(ERROR) << msg << " (" << code << ")"; |
| return binder::Status::fromExceptionCode(code, String8(msg.c_str())); |
| } |
| |
| static binder::Status error() { |
| return binder::Status::fromServiceSpecificError(errno); |
| } |
| |
| static binder::Status error(const std::string& msg) { |
| PLOG(ERROR) << msg; |
| return binder::Status::fromServiceSpecificError(errno, String8(msg.c_str())); |
| } |
| |
| static binder::Status error(uint32_t code, const std::string& msg) { |
| LOG(ERROR) << msg << " (" << code << ")"; |
| return binder::Status::fromServiceSpecificError(code, String8(msg.c_str())); |
| } |
| |
| binder::Status checkPermission(const char* permission) { |
| pid_t pid; |
| uid_t uid; |
| |
| if (checkCallingPermission(String16(permission), reinterpret_cast<int32_t*>(&pid), |
| reinterpret_cast<int32_t*>(&uid))) { |
| return ok(); |
| } else { |
| return exception(binder::Status::EX_SECURITY, |
| StringPrintf("UID %d / PID %d lacks permission %s", uid, pid, permission)); |
| } |
| } |
| |
| binder::Status checkUid(uid_t expectedUid) { |
| uid_t uid = IPCThreadState::self()->getCallingUid(); |
| if (uid == expectedUid || uid == AID_ROOT) { |
| return ok(); |
| } else { |
| return exception(binder::Status::EX_SECURITY, |
| StringPrintf("UID %d is not expected UID %d", uid, expectedUid)); |
| } |
| } |
| |
| binder::Status checkArgumentUuid(const std::unique_ptr<std::string>& uuid) { |
| if (!uuid || is_valid_filename(*uuid)) { |
| return ok(); |
| } else { |
| return exception(binder::Status::EX_ILLEGAL_ARGUMENT, |
| StringPrintf("UUID %s is malformed", uuid->c_str())); |
| } |
| } |
| |
| binder::Status checkArgumentUuidTestOrNull(const std::unique_ptr<std::string>& uuid) { |
| if (!uuid || strcmp(uuid->c_str(), kTestUuid) == 0) { |
| return ok(); |
| } else { |
| return exception(binder::Status::EX_ILLEGAL_ARGUMENT, |
| StringPrintf("UUID must be null or \"%s\", got: %s", kTestUuid, uuid->c_str())); |
| } |
| } |
| |
| binder::Status checkArgumentPackageName(const std::string& packageName) { |
| if (is_valid_package_name(packageName)) { |
| return ok(); |
| } else { |
| return exception(binder::Status::EX_ILLEGAL_ARGUMENT, |
| StringPrintf("Package name %s is malformed", packageName.c_str())); |
| } |
| } |
| |
| binder::Status checkArgumentPath(const std::string& path) { |
| if (path.empty()) { |
| return exception(binder::Status::EX_ILLEGAL_ARGUMENT, "Missing path"); |
| } |
| if (path[0] != '/') { |
| return exception(binder::Status::EX_ILLEGAL_ARGUMENT, |
| StringPrintf("Path %s is relative", path.c_str())); |
| } |
| if ((path + '/').find("/../") != std::string::npos) { |
| return exception(binder::Status::EX_ILLEGAL_ARGUMENT, |
| StringPrintf("Path %s is shady", path.c_str())); |
| } |
| for (const char& c : path) { |
| if (c == '\0' || c == '\n') { |
| return exception(binder::Status::EX_ILLEGAL_ARGUMENT, |
| StringPrintf("Path %s is malformed", path.c_str())); |
| } |
| } |
| return ok(); |
| } |
| |
| binder::Status checkArgumentPath(const std::unique_ptr<std::string>& path) { |
| if (path) { |
| return checkArgumentPath(*path); |
| } else { |
| return ok(); |
| } |
| } |
| |
| #define ENFORCE_UID(uid) { \ |
| binder::Status status = checkUid((uid)); \ |
| if (!status.isOk()) { \ |
| return status; \ |
| } \ |
| } |
| |
| #define CHECK_ARGUMENT_UUID(uuid) { \ |
| binder::Status status = checkArgumentUuid((uuid)); \ |
| if (!status.isOk()) { \ |
| return status; \ |
| } \ |
| } |
| |
| #define CHECK_ARGUMENT_UUID_IS_TEST_OR_NULL(uuid) { \ |
| auto status = checkArgumentUuidTestOrNull(uuid); \ |
| if (!status.isOk()) { \ |
| return status; \ |
| } \ |
| } \ |
| |
| #define CHECK_ARGUMENT_PACKAGE_NAME(packageName) { \ |
| binder::Status status = \ |
| checkArgumentPackageName((packageName)); \ |
| if (!status.isOk()) { \ |
| return status; \ |
| } \ |
| } |
| |
| #define CHECK_ARGUMENT_PATH(path) { \ |
| binder::Status status = checkArgumentPath((path)); \ |
| if (!status.isOk()) { \ |
| return status; \ |
| } \ |
| } |
| |
| #define ASSERT_PAGE_SIZE_4K() { \ |
| if (getpagesize() != kVerityPageSize) { \ |
| return error("FSVerity only supports 4K pages"); \ |
| } \ |
| } |
| |
| } // namespace |
| |
| status_t InstalldNativeService::start() { |
| IPCThreadState::self()->disableBackgroundScheduling(true); |
| status_t ret = BinderService<InstalldNativeService>::publish(); |
| if (ret != android::OK) { |
| return ret; |
| } |
| sp<ProcessState> ps(ProcessState::self()); |
| ps->startThreadPool(); |
| ps->giveThreadPoolName(); |
| return android::OK; |
| } |
| |
| status_t InstalldNativeService::dump(int fd, const Vector<String16> & /* args */) { |
| auto out = std::fstream(StringPrintf("/proc/self/fd/%d", fd)); |
| const binder::Status dump_permission = checkPermission(kDump); |
| if (!dump_permission.isOk()) { |
| out << dump_permission.toString8() << endl; |
| return PERMISSION_DENIED; |
| } |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| out << "installd is happy!" << endl; |
| |
| { |
| std::lock_guard<std::recursive_mutex> lock(mMountsLock); |
| out << endl << "Storage mounts:" << endl; |
| for (const auto& n : mStorageMounts) { |
| out << " " << n.first << " = " << n.second << endl; |
| } |
| } |
| |
| { |
| std::lock_guard<std::recursive_mutex> lock(mQuotasLock); |
| out << endl << "Per-UID cache quotas:" << endl; |
| for (const auto& n : mCacheQuotas) { |
| out << " " << n.first << " = " << n.second << endl; |
| } |
| } |
| |
| out << endl; |
| out.flush(); |
| |
| return NO_ERROR; |
| } |
| |
| /** |
| * Perform restorecon of the given path, but only perform recursive restorecon |
| * if the label of that top-level file actually changed. This can save us |
| * significant time by avoiding no-op traversals of large filesystem trees. |
| */ |
| static int restorecon_app_data_lazy(const std::string& path, const std::string& seInfo, uid_t uid, |
| bool existing) { |
| int res = 0; |
| char* before = nullptr; |
| char* after = nullptr; |
| |
| // Note that SELINUX_ANDROID_RESTORECON_DATADATA flag is set by |
| // libselinux. Not needed here. |
| |
| if (lgetfilecon(path.c_str(), &before) < 0) { |
| PLOG(ERROR) << "Failed before getfilecon for " << path; |
| goto fail; |
| } |
| if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 0) < 0) { |
| PLOG(ERROR) << "Failed top-level restorecon for " << path; |
| goto fail; |
| } |
| if (lgetfilecon(path.c_str(), &after) < 0) { |
| PLOG(ERROR) << "Failed after getfilecon for " << path; |
| goto fail; |
| } |
| |
| // If the initial top-level restorecon above changed the label, then go |
| // back and restorecon everything recursively |
| if (strcmp(before, after)) { |
| if (existing) { |
| LOG(DEBUG) << "Detected label change from " << before << " to " << after << " at " |
| << path << "; running recursive restorecon"; |
| } |
| if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, |
| SELINUX_ANDROID_RESTORECON_RECURSE) < 0) { |
| PLOG(ERROR) << "Failed recursive restorecon for " << path; |
| goto fail; |
| } |
| } |
| |
| goto done; |
| fail: |
| res = -1; |
| done: |
| free(before); |
| free(after); |
| return res; |
| } |
| |
| static int restorecon_app_data_lazy(const std::string& parent, const char* name, |
| const std::string& seInfo, uid_t uid, bool existing) { |
| return restorecon_app_data_lazy(StringPrintf("%s/%s", parent.c_str(), name), seInfo, uid, |
| existing); |
| } |
| |
| static int prepare_app_dir(const std::string& path, mode_t target_mode, uid_t uid) { |
| if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) != 0) { |
| PLOG(ERROR) << "Failed to prepare " << path; |
| return -1; |
| } |
| return 0; |
| } |
| |
| static bool prepare_app_profile_dir(const std::string& packageName, int32_t appId, int32_t userId) { |
| if (!property_get_bool("dalvik.vm.usejitprofiles", false)) { |
| return true; |
| } |
| |
| int32_t uid = multiuser_get_uid(userId, appId); |
| int shared_app_gid = multiuser_get_shared_gid(userId, appId); |
| if (shared_app_gid == -1) { |
| // TODO(calin): this should no longer be possible but do not continue if we don't get |
| // a valid shared gid. |
| PLOG(WARNING) << "Invalid shared_app_gid for " << packageName; |
| return true; |
| } |
| |
| const std::string profile_dir = |
| create_primary_current_profile_package_dir_path(userId, packageName); |
| // read-write-execute only for the app user. |
| if (fs_prepare_dir_strict(profile_dir.c_str(), 0700, uid, uid) != 0) { |
| PLOG(ERROR) << "Failed to prepare " << profile_dir; |
| return false; |
| } |
| |
| const std::string ref_profile_path = |
| create_primary_reference_profile_package_dir_path(packageName); |
| |
| // Prepare the reference profile directory. Note that we use the non strict version of |
| // fs_prepare_dir. This will fix the permission and the ownership to the correct values. |
| // This is particularly important given that in O there were some fixes for how the |
| // shared_app_gid is computed. |
| // |
| // Note that by the time we get here we know that we are using a correct uid (otherwise |
| // prepare_app_dir and the above fs_prepare_file_strict which check the uid). So we |
| // are sure that the gid being used belongs to the owning app and not someone else. |
| // |
| // dex2oat/profman runs under the shared app gid and it needs to read/write reference profiles. |
| if (fs_prepare_dir(ref_profile_path.c_str(), 0770, AID_SYSTEM, shared_app_gid) != 0) { |
| PLOG(ERROR) << "Failed to prepare " << ref_profile_path; |
| return false; |
| } |
| |
| return true; |
| } |
| |
| binder::Status InstalldNativeService::createAppData(const std::unique_ptr<std::string>& uuid, |
| const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, |
| const std::string& seInfo, int32_t targetSdkVersion, int64_t* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| const char* pkgname = packageName.c_str(); |
| |
| // Assume invalid inode unless filled in below |
| if (_aidl_return != nullptr) *_aidl_return = -1; |
| |
| int32_t uid = multiuser_get_uid(userId, appId); |
| int32_t cacheGid = multiuser_get_cache_gid(userId, appId); |
| mode_t targetMode = targetSdkVersion >= MIN_RESTRICTED_HOME_SDK_VERSION ? 0700 : 0751; |
| |
| // If UID doesn't have a specific cache GID, use UID value |
| if (cacheGid == -1) { |
| cacheGid = uid; |
| } |
| |
| if (flags & FLAG_STORAGE_CE) { |
| auto path = create_data_user_ce_package_path(uuid_, userId, pkgname); |
| bool existing = (access(path.c_str(), F_OK) == 0); |
| |
| if (prepare_app_dir(path, targetMode, uid) || |
| prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || |
| prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { |
| return error("Failed to prepare " + path); |
| } |
| |
| // Consider restorecon over contents if label changed |
| if (restorecon_app_data_lazy(path, seInfo, uid, existing) || |
| restorecon_app_data_lazy(path, "cache", seInfo, uid, existing) || |
| restorecon_app_data_lazy(path, "code_cache", seInfo, uid, existing)) { |
| return error("Failed to restorecon " + path); |
| } |
| |
| // Remember inode numbers of cache directories so that we can clear |
| // contents while CE storage is locked |
| if (write_path_inode(path, "cache", kXattrInodeCache) || |
| write_path_inode(path, "code_cache", kXattrInodeCodeCache)) { |
| return error("Failed to write_path_inode for " + path); |
| } |
| |
| // And return the CE inode of the top-level data directory so we can |
| // clear contents while CE storage is locked |
| if ((_aidl_return != nullptr) |
| && get_path_inode(path, reinterpret_cast<ino_t*>(_aidl_return)) != 0) { |
| return error("Failed to get_path_inode for " + path); |
| } |
| } |
| if (flags & FLAG_STORAGE_DE) { |
| auto path = create_data_user_de_package_path(uuid_, userId, pkgname); |
| bool existing = (access(path.c_str(), F_OK) == 0); |
| |
| if (prepare_app_dir(path, targetMode, uid) || |
| prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || |
| prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { |
| return error("Failed to prepare " + path); |
| } |
| |
| // Consider restorecon over contents if label changed |
| if (restorecon_app_data_lazy(path, seInfo, uid, existing) || |
| restorecon_app_data_lazy(path, "cache", seInfo, uid, existing) || |
| restorecon_app_data_lazy(path, "code_cache", seInfo, uid, existing)) { |
| return error("Failed to restorecon " + path); |
| } |
| |
| if (!prepare_app_profile_dir(packageName, appId, userId)) { |
| return error("Failed to prepare profiles for " + packageName); |
| } |
| } |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::migrateAppData(const std::unique_ptr<std::string>& uuid, |
| const std::string& packageName, int32_t userId, int32_t flags) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| const char* pkgname = packageName.c_str(); |
| |
| // This method only exists to upgrade system apps that have requested |
| // forceDeviceEncrypted, so their default storage always lives in a |
| // consistent location. This only works on non-FBE devices, since we |
| // never want to risk exposing data on a device with real CE/DE storage. |
| |
| auto ce_path = create_data_user_ce_package_path(uuid_, userId, pkgname); |
| auto de_path = create_data_user_de_package_path(uuid_, userId, pkgname); |
| |
| // If neither directory is marked as default, assume CE is default |
| if (getxattr(ce_path.c_str(), kXattrDefault, nullptr, 0) == -1 |
| && getxattr(de_path.c_str(), kXattrDefault, nullptr, 0) == -1) { |
| if (setxattr(ce_path.c_str(), kXattrDefault, nullptr, 0, 0) != 0) { |
| return error("Failed to mark default storage " + ce_path); |
| } |
| } |
| |
| // Migrate default data location if needed |
| auto target = (flags & FLAG_STORAGE_DE) ? de_path : ce_path; |
| auto source = (flags & FLAG_STORAGE_DE) ? ce_path : de_path; |
| |
| if (getxattr(target.c_str(), kXattrDefault, nullptr, 0) == -1) { |
| LOG(WARNING) << "Requested default storage " << target |
| << " is not active; migrating from " << source; |
| if (delete_dir_contents_and_dir(target) != 0) { |
| return error("Failed to delete " + target); |
| } |
| if (rename(source.c_str(), target.c_str()) != 0) { |
| return error("Failed to rename " + source + " to " + target); |
| } |
| } |
| |
| return ok(); |
| } |
| |
| |
| binder::Status InstalldNativeService::clearAppProfiles(const std::string& packageName, |
| const std::string& profileName) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| binder::Status res = ok(); |
| if (!clear_primary_reference_profile(packageName, profileName)) { |
| res = error("Failed to clear reference profile for " + packageName); |
| } |
| if (!clear_primary_current_profiles(packageName, profileName)) { |
| res = error("Failed to clear current profiles for " + packageName); |
| } |
| return res; |
| } |
| |
| binder::Status InstalldNativeService::clearAppData(const std::unique_ptr<std::string>& uuid, |
| const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| const char* pkgname = packageName.c_str(); |
| |
| binder::Status res = ok(); |
| if (flags & FLAG_STORAGE_CE) { |
| auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); |
| if (flags & FLAG_CLEAR_CACHE_ONLY) { |
| path = read_path_inode(path, "cache", kXattrInodeCache); |
| } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { |
| path = read_path_inode(path, "code_cache", kXattrInodeCodeCache); |
| } |
| if (access(path.c_str(), F_OK) == 0) { |
| if (delete_dir_contents(path) != 0) { |
| res = error("Failed to delete contents of " + path); |
| } else if ((flags & (FLAG_CLEAR_CACHE_ONLY | FLAG_CLEAR_CODE_CACHE_ONLY)) == 0) { |
| remove_path_xattr(path, kXattrInodeCache); |
| remove_path_xattr(path, kXattrInodeCodeCache); |
| } |
| } |
| } |
| if (flags & FLAG_STORAGE_DE) { |
| std::string suffix = ""; |
| bool only_cache = false; |
| if (flags & FLAG_CLEAR_CACHE_ONLY) { |
| suffix = CACHE_DIR_POSTFIX; |
| only_cache = true; |
| } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { |
| suffix = CODE_CACHE_DIR_POSTFIX; |
| only_cache = true; |
| } |
| |
| auto path = create_data_user_de_package_path(uuid_, userId, pkgname) + suffix; |
| if (access(path.c_str(), F_OK) == 0) { |
| if (delete_dir_contents(path) != 0) { |
| res = error("Failed to delete contents of " + path); |
| } |
| } |
| } |
| if (flags & FLAG_STORAGE_EXTERNAL) { |
| std::lock_guard<std::recursive_mutex> lock(mMountsLock); |
| for (const auto& n : mStorageMounts) { |
| auto extPath = n.second; |
| if (n.first.compare(0, 14, "/mnt/media_rw/") != 0) { |
| extPath += StringPrintf("/%d", userId); |
| } else if (userId != 0) { |
| // TODO: support devices mounted under secondary users |
| continue; |
| } |
| if (flags & FLAG_CLEAR_CACHE_ONLY) { |
| // Clear only cached data from shared storage |
| auto path = StringPrintf("%s/Android/data/%s/cache", extPath.c_str(), pkgname); |
| if (delete_dir_contents(path, true) != 0) { |
| res = error("Failed to delete contents of " + path); |
| } |
| } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { |
| // No code cache on shared storage |
| } else { |
| // Clear everything on shared storage |
| auto path = StringPrintf("%s/Android/data/%s", extPath.c_str(), pkgname); |
| if (delete_dir_contents(path, true) != 0) { |
| res = error("Failed to delete contents of " + path); |
| } |
| path = StringPrintf("%s/Android/media/%s", extPath.c_str(), pkgname); |
| if (delete_dir_contents(path, true) != 0) { |
| res = error("Failed to delete contents of " + path); |
| } |
| path = StringPrintf("%s/Android/obb/%s", extPath.c_str(), pkgname); |
| if (delete_dir_contents(path, true) != 0) { |
| res = error("Failed to delete contents of " + path); |
| } |
| } |
| } |
| } |
| return res; |
| } |
| |
| static int destroy_app_reference_profile(const std::string& pkgname) { |
| return delete_dir_contents_and_dir( |
| create_primary_reference_profile_package_dir_path(pkgname), |
| /*ignore_if_missing*/ true); |
| } |
| |
| static int destroy_app_current_profiles(const std::string& pkgname, userid_t userid) { |
| return delete_dir_contents_and_dir( |
| create_primary_current_profile_package_dir_path(userid, pkgname), |
| /*ignore_if_missing*/ true); |
| } |
| |
| binder::Status InstalldNativeService::destroyAppProfiles(const std::string& packageName) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| binder::Status res = ok(); |
| std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr); |
| for (auto user : users) { |
| if (destroy_app_current_profiles(packageName, user) != 0) { |
| res = error("Failed to destroy current profiles for " + packageName); |
| } |
| } |
| if (destroy_app_reference_profile(packageName) != 0) { |
| res = error("Failed to destroy reference profile for " + packageName); |
| } |
| return res; |
| } |
| |
| binder::Status InstalldNativeService::destroyAppData(const std::unique_ptr<std::string>& uuid, |
| const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| const char* pkgname = packageName.c_str(); |
| |
| binder::Status res = ok(); |
| if (flags & FLAG_STORAGE_CE) { |
| auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); |
| if (delete_dir_contents_and_dir(path) != 0) { |
| res = error("Failed to delete " + path); |
| } |
| } |
| if (flags & FLAG_STORAGE_DE) { |
| auto path = create_data_user_de_package_path(uuid_, userId, pkgname); |
| if (delete_dir_contents_and_dir(path) != 0) { |
| res = error("Failed to delete " + path); |
| } |
| destroy_app_current_profiles(packageName, userId); |
| // TODO(calin): If the package is still installed by other users it's probably |
| // beneficial to keep the reference profile around. |
| // Verify if it's ok to do that. |
| destroy_app_reference_profile(packageName); |
| } |
| if (flags & FLAG_STORAGE_EXTERNAL) { |
| std::lock_guard<std::recursive_mutex> lock(mMountsLock); |
| for (const auto& n : mStorageMounts) { |
| auto extPath = n.second; |
| if (n.first.compare(0, 14, "/mnt/media_rw/") != 0) { |
| extPath += StringPrintf("/%d", userId); |
| } else if (userId != 0) { |
| // TODO: support devices mounted under secondary users |
| continue; |
| } |
| auto path = StringPrintf("%s/Android/data/%s", extPath.c_str(), pkgname); |
| if (delete_dir_contents_and_dir(path, true) != 0) { |
| res = error("Failed to delete contents of " + path); |
| } |
| path = StringPrintf("%s/Android/media/%s", extPath.c_str(), pkgname); |
| if (delete_dir_contents_and_dir(path, true) != 0) { |
| res = error("Failed to delete contents of " + path); |
| } |
| path = StringPrintf("%s/Android/obb/%s", extPath.c_str(), pkgname); |
| if (delete_dir_contents_and_dir(path, true) != 0) { |
| res = error("Failed to delete contents of " + path); |
| } |
| } |
| } |
| return res; |
| } |
| |
| static gid_t get_cache_gid(uid_t uid) { |
| int32_t gid = multiuser_get_cache_gid(multiuser_get_user_id(uid), multiuser_get_app_id(uid)); |
| return (gid != -1) ? gid : uid; |
| } |
| |
| binder::Status InstalldNativeService::fixupAppData(const std::unique_ptr<std::string>& uuid, |
| int32_t flags) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| for (auto user : get_known_users(uuid_)) { |
| ATRACE_BEGIN("fixup user"); |
| FTS* fts; |
| FTSENT* p; |
| auto ce_path = create_data_user_ce_path(uuid_, user); |
| auto de_path = create_data_user_de_path(uuid_, user); |
| char *argv[] = { (char*) ce_path.c_str(), (char*) de_path.c_str(), nullptr }; |
| if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr))) { |
| return error("Failed to fts_open"); |
| } |
| while ((p = fts_read(fts)) != nullptr) { |
| if (p->fts_info == FTS_D && p->fts_level == 1) { |
| // Track down inodes of cache directories |
| uint64_t raw = 0; |
| ino_t inode_cache = 0; |
| ino_t inode_code_cache = 0; |
| if (getxattr(p->fts_path, kXattrInodeCache, &raw, sizeof(raw)) == sizeof(raw)) { |
| inode_cache = raw; |
| } |
| if (getxattr(p->fts_path, kXattrInodeCodeCache, &raw, sizeof(raw)) == sizeof(raw)) { |
| inode_code_cache = raw; |
| } |
| |
| // Figure out expected GID of each child |
| FTSENT* child = fts_children(fts, 0); |
| while (child != nullptr) { |
| if ((child->fts_statp->st_ino == inode_cache) |
| || (child->fts_statp->st_ino == inode_code_cache) |
| || !strcmp(child->fts_name, "cache") |
| || !strcmp(child->fts_name, "code_cache")) { |
| child->fts_number = get_cache_gid(p->fts_statp->st_uid); |
| } else { |
| child->fts_number = p->fts_statp->st_uid; |
| } |
| child = child->fts_link; |
| } |
| } else if (p->fts_level >= 2) { |
| if (p->fts_level > 2) { |
| // Inherit GID from parent once we're deeper into tree |
| p->fts_number = p->fts_parent->fts_number; |
| } |
| |
| uid_t uid = p->fts_parent->fts_statp->st_uid; |
| gid_t cache_gid = get_cache_gid(uid); |
| gid_t expected = p->fts_number; |
| gid_t actual = p->fts_statp->st_gid; |
| if (actual == expected) { |
| #if FIXUP_DEBUG |
| LOG(DEBUG) << "Ignoring " << p->fts_path << " with expected GID " << expected; |
| #endif |
| if (!(flags & FLAG_FORCE)) { |
| fts_set(fts, p, FTS_SKIP); |
| } |
| } else if ((actual == uid) || (actual == cache_gid)) { |
| // Only consider fixing up when current GID belongs to app |
| if (p->fts_info != FTS_D) { |
| LOG(INFO) << "Fixing " << p->fts_path << " with unexpected GID " << actual |
| << " instead of " << expected; |
| } |
| switch (p->fts_info) { |
| case FTS_DP: |
| // If we're moving towards cache GID, we need to set S_ISGID |
| if (expected == cache_gid) { |
| if (chmod(p->fts_path, 02771) != 0) { |
| PLOG(WARNING) << "Failed to chmod " << p->fts_path; |
| } |
| } |
| [[fallthrough]]; // also set GID |
| case FTS_F: |
| if (chown(p->fts_path, -1, expected) != 0) { |
| PLOG(WARNING) << "Failed to chown " << p->fts_path; |
| } |
| break; |
| case FTS_SL: |
| case FTS_SLNONE: |
| if (lchown(p->fts_path, -1, expected) != 0) { |
| PLOG(WARNING) << "Failed to chown " << p->fts_path; |
| } |
| break; |
| } |
| } else { |
| // Ignore all other GID transitions, since they're kinda shady |
| LOG(WARNING) << "Ignoring " << p->fts_path << " with unexpected GID " << actual |
| << " instead of " << expected; |
| if (!(flags & FLAG_FORCE)) { |
| fts_set(fts, p, FTS_SKIP); |
| } |
| } |
| } |
| } |
| fts_close(fts); |
| ATRACE_END(); |
| } |
| return ok(); |
| } |
| |
| static int32_t copy_directory_recursive(const char* from, const char* to) { |
| char *argv[] = { |
| (char*) kCpPath, |
| (char*) "-F", /* delete any existing destination file first (--remove-destination) */ |
| (char*) "-p", /* preserve timestamps, ownership, and permissions */ |
| (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ |
| (char*) "-P", /* Do not follow symlinks [default] */ |
| (char*) "-d", /* don't dereference symlinks */ |
| (char*) from, |
| (char*) to |
| }; |
| |
| LOG(DEBUG) << "Copying " << from << " to " << to; |
| return android_fork_execvp(ARRAY_SIZE(argv), argv, nullptr, false, true); |
| } |
| |
| binder::Status InstalldNativeService::snapshotAppData( |
| const std::unique_ptr<std::string>& volumeUuid, |
| const std::string& packageName, int32_t user, int32_t snapshotId, |
| int32_t storageFlags, int64_t* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID_IS_TEST_OR_NULL(volumeUuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* volume_uuid = volumeUuid ? volumeUuid->c_str() : nullptr; |
| const char* package_name = packageName.c_str(); |
| |
| binder::Status res = ok(); |
| // Default result to 0, it will be populated with inode of ce data snapshot |
| // if FLAG_STORAGE_CE has been passed. |
| if (_aidl_return != nullptr) *_aidl_return = 0; |
| |
| bool clear_ce_on_exit = false; |
| bool clear_de_on_exit = false; |
| |
| auto deleter = [&clear_ce_on_exit, &clear_de_on_exit, &volume_uuid, &user, &package_name, |
| &snapshotId] { |
| if (clear_de_on_exit) { |
| auto to = create_data_misc_de_rollback_package_path(volume_uuid, user, snapshotId, |
| package_name); |
| if (delete_dir_contents(to.c_str(), 1, nullptr) != 0) { |
| LOG(WARNING) << "Failed to delete app data snapshot: " << to; |
| } |
| } |
| |
| if (clear_ce_on_exit) { |
| auto to = create_data_misc_ce_rollback_package_path(volume_uuid, user, snapshotId, |
| package_name); |
| if (delete_dir_contents(to.c_str(), 1, nullptr) != 0) { |
| LOG(WARNING) << "Failed to delete app data snapshot: " << to; |
| } |
| } |
| }; |
| |
| auto scope_guard = android::base::make_scope_guard(deleter); |
| |
| // The app may not have any data at all, in which case it's OK to skip here. |
| auto from_ce = create_data_user_ce_package_path(volume_uuid, user, package_name); |
| if (access(from_ce.c_str(), F_OK) != 0) { |
| LOG(INFO) << "Missing source " << from_ce; |
| return ok(); |
| } |
| |
| // ce_data_inode is not needed when FLAG_CLEAR_CACHE_ONLY is set. |
| binder::Status clear_cache_result = clearAppData(volumeUuid, packageName, user, |
| storageFlags | FLAG_CLEAR_CACHE_ONLY, 0); |
| if (!clear_cache_result.isOk()) { |
| // It should be fine to continue snapshot if we for some reason failed |
| // to clear cache. |
| LOG(WARNING) << "Failed to clear cache of app " << packageName; |
| } |
| |
| // ce_data_inode is not needed when FLAG_CLEAR_CODE_CACHE_ONLY is set. |
| binder::Status clear_code_cache_result = clearAppData(volumeUuid, packageName, user, |
| storageFlags | FLAG_CLEAR_CODE_CACHE_ONLY, 0); |
| if (!clear_code_cache_result.isOk()) { |
| // It should be fine to continue snapshot if we for some reason failed |
| // to clear code_cache. |
| LOG(WARNING) << "Failed to clear code_cache of app " << packageName; |
| } |
| |
| if (storageFlags & FLAG_STORAGE_DE) { |
| auto from = create_data_user_de_package_path(volume_uuid, user, package_name); |
| auto to = create_data_misc_de_rollback_path(volume_uuid, user, snapshotId); |
| auto rollback_package_path = create_data_misc_de_rollback_package_path(volume_uuid, user, |
| snapshotId, package_name); |
| |
| int rc = create_dir_if_needed(to.c_str(), kRollbackFolderMode); |
| if (rc != 0) { |
| return error(rc, "Failed to create folder " + to); |
| } |
| |
| rc = delete_dir_contents(rollback_package_path, true /* ignore_if_missing */); |
| if (rc != 0) { |
| return error(rc, "Failed clearing existing snapshot " + rollback_package_path); |
| } |
| |
| rc = copy_directory_recursive(from.c_str(), to.c_str()); |
| if (rc != 0) { |
| res = error(rc, "Failed copying " + from + " to " + to); |
| clear_de_on_exit = true; |
| return res; |
| } |
| } |
| |
| if (storageFlags & FLAG_STORAGE_CE) { |
| auto from = create_data_user_ce_package_path(volume_uuid, user, package_name); |
| auto to = create_data_misc_ce_rollback_path(volume_uuid, user, snapshotId); |
| auto rollback_package_path = create_data_misc_ce_rollback_package_path(volume_uuid, user, |
| snapshotId, package_name); |
| |
| int rc = create_dir_if_needed(to.c_str(), kRollbackFolderMode); |
| if (rc != 0) { |
| return error(rc, "Failed to create folder " + to); |
| } |
| |
| rc = delete_dir_contents(rollback_package_path, true /* ignore_if_missing */); |
| if (rc != 0) { |
| return error(rc, "Failed clearing existing snapshot " + rollback_package_path); |
| } |
| |
| rc = copy_directory_recursive(from.c_str(), to.c_str()); |
| if (rc != 0) { |
| res = error(rc, "Failed copying " + from + " to " + to); |
| clear_ce_on_exit = true; |
| return res; |
| } |
| if (_aidl_return != nullptr) { |
| auto ce_snapshot_path = create_data_misc_ce_rollback_package_path(volume_uuid, user, |
| snapshotId, package_name); |
| rc = get_path_inode(ce_snapshot_path, reinterpret_cast<ino_t*>(_aidl_return)); |
| if (rc != 0) { |
| res = error(rc, "Failed to get_path_inode for " + ce_snapshot_path); |
| clear_ce_on_exit = true; |
| return res; |
| } |
| } |
| } |
| |
| return res; |
| } |
| |
| binder::Status InstalldNativeService::restoreAppDataSnapshot( |
| const std::unique_ptr<std::string>& volumeUuid, const std::string& packageName, |
| const int32_t appId, const std::string& seInfo, const int32_t user, |
| const int32_t snapshotId, int32_t storageFlags) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID_IS_TEST_OR_NULL(volumeUuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* volume_uuid = volumeUuid ? volumeUuid->c_str() : nullptr; |
| const char* package_name = packageName.c_str(); |
| |
| auto from_ce = create_data_misc_ce_rollback_package_path(volume_uuid, |
| user, snapshotId, package_name); |
| auto from_de = create_data_misc_de_rollback_package_path(volume_uuid, |
| user, snapshotId, package_name); |
| |
| const bool needs_ce_rollback = (storageFlags & FLAG_STORAGE_CE) && |
| (access(from_ce.c_str(), F_OK) == 0); |
| const bool needs_de_rollback = (storageFlags & FLAG_STORAGE_DE) && |
| (access(from_de.c_str(), F_OK) == 0); |
| |
| if (!needs_ce_rollback && !needs_de_rollback) { |
| return ok(); |
| } |
| |
| // We know we're going to rollback one of the CE or DE data, so we clear |
| // application data first. Note that it's possible that we're asked to |
| // restore both CE & DE data but that one of the restores fail. Leaving the |
| // app with no data in those cases is arguably better than leaving the app |
| // with mismatched / stale data. |
| LOG(INFO) << "Clearing app data for " << packageName << " to restore snapshot."; |
| // It's fine to pass 0 as ceDataInode here, because restoreAppDataSnapshot |
| // can only be called when user unlocks the phone, meaning that CE user data |
| // is decrypted. |
| binder::Status res = clearAppData(volumeUuid, packageName, user, storageFlags, |
| 0 /* ceDataInode */); |
| if (!res.isOk()) { |
| return res; |
| } |
| |
| if (needs_ce_rollback) { |
| auto to_ce = create_data_user_ce_path(volume_uuid, user); |
| int rc = copy_directory_recursive(from_ce.c_str(), to_ce.c_str()); |
| if (rc != 0) { |
| res = error(rc, "Failed copying " + from_ce + " to " + to_ce); |
| return res; |
| } |
| } |
| |
| if (needs_de_rollback) { |
| auto to_de = create_data_user_de_path(volume_uuid, user); |
| int rc = copy_directory_recursive(from_de.c_str(), to_de.c_str()); |
| if (rc != 0) { |
| if (needs_ce_rollback) { |
| auto ce_data = create_data_user_ce_package_path(volume_uuid, user, package_name); |
| LOG(WARNING) << "de_data rollback failed. Erasing rolled back ce_data " << ce_data; |
| if (delete_dir_contents(ce_data.c_str(), 1, nullptr) != 0) { |
| LOG(WARNING) << "Failed to delete rolled back ce_data " << ce_data; |
| } |
| } |
| res = error(rc, "Failed copying " + from_de + " to " + to_de); |
| return res; |
| } |
| } |
| |
| // Finally, restore the SELinux label on the app data. |
| return restoreconAppData(volumeUuid, packageName, user, storageFlags, appId, seInfo); |
| } |
| |
| binder::Status InstalldNativeService::destroyAppDataSnapshot( |
| const std::unique_ptr<std::string> &volumeUuid, const std::string& packageName, |
| const int32_t user, const int64_t ceSnapshotInode, const int32_t snapshotId, |
| int32_t storageFlags) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID_IS_TEST_OR_NULL(volumeUuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* volume_uuid = volumeUuid ? volumeUuid->c_str() : nullptr; |
| const char* package_name = packageName.c_str(); |
| |
| if (storageFlags & FLAG_STORAGE_DE) { |
| auto de_snapshot_path = create_data_misc_de_rollback_package_path(volume_uuid, |
| user, snapshotId, package_name); |
| |
| int res = delete_dir_contents_and_dir(de_snapshot_path, true /* ignore_if_missing */); |
| if (res != 0) { |
| return error(res, "Failed clearing snapshot " + de_snapshot_path); |
| } |
| } |
| |
| if (storageFlags & FLAG_STORAGE_CE) { |
| auto ce_snapshot_path = create_data_misc_ce_rollback_package_path(volume_uuid, |
| user, snapshotId, package_name, ceSnapshotInode); |
| int res = delete_dir_contents_and_dir(ce_snapshot_path, true /* ignore_if_missing */); |
| if (res != 0) { |
| return error(res, "Failed clearing snapshot " + ce_snapshot_path); |
| } |
| } |
| return ok(); |
| } |
| |
| |
| binder::Status InstalldNativeService::moveCompleteApp(const std::unique_ptr<std::string>& fromUuid, |
| const std::unique_ptr<std::string>& toUuid, const std::string& packageName, |
| const std::string& dataAppName, int32_t appId, const std::string& seInfo, |
| int32_t targetSdkVersion) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(fromUuid); |
| CHECK_ARGUMENT_UUID(toUuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* from_uuid = fromUuid ? fromUuid->c_str() : nullptr; |
| const char* to_uuid = toUuid ? toUuid->c_str() : nullptr; |
| const char* package_name = packageName.c_str(); |
| const char* data_app_name = dataAppName.c_str(); |
| |
| binder::Status res = ok(); |
| std::vector<userid_t> users = get_known_users(from_uuid); |
| |
| // Copy app |
| { |
| auto from = create_data_app_package_path(from_uuid, data_app_name); |
| auto to = create_data_app_package_path(to_uuid, data_app_name); |
| auto to_parent = create_data_app_path(to_uuid); |
| |
| int rc = copy_directory_recursive(from.c_str(), to_parent.c_str()); |
| if (rc != 0) { |
| res = error(rc, "Failed copying " + from + " to " + to); |
| goto fail; |
| } |
| |
| if (selinux_android_restorecon(to.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) { |
| res = error("Failed to restorecon " + to); |
| goto fail; |
| } |
| } |
| |
| // Copy private data for all known users |
| for (auto user : users) { |
| |
| // Data source may not exist for all users; that's okay |
| auto from_ce = create_data_user_ce_package_path(from_uuid, user, package_name); |
| if (access(from_ce.c_str(), F_OK) != 0) { |
| LOG(INFO) << "Missing source " << from_ce; |
| continue; |
| } |
| |
| if (!createAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, appId, |
| seInfo, targetSdkVersion, nullptr).isOk()) { |
| res = error("Failed to create package target"); |
| goto fail; |
| } |
| |
| { |
| auto from = create_data_user_de_package_path(from_uuid, user, package_name); |
| auto to = create_data_user_de_path(to_uuid, user); |
| |
| int rc = copy_directory_recursive(from.c_str(), to.c_str()); |
| if (rc != 0) { |
| res = error(rc, "Failed copying " + from + " to " + to); |
| goto fail; |
| } |
| } |
| { |
| auto from = create_data_user_ce_package_path(from_uuid, user, package_name); |
| auto to = create_data_user_ce_path(to_uuid, user); |
| |
| int rc = copy_directory_recursive(from.c_str(), to.c_str()); |
| if (rc != 0) { |
| res = error(rc, "Failed copying " + from + " to " + to); |
| goto fail; |
| } |
| } |
| |
| if (!restoreconAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, |
| appId, seInfo).isOk()) { |
| res = error("Failed to restorecon"); |
| goto fail; |
| } |
| } |
| |
| // We let the framework scan the new location and persist that before |
| // deleting the data in the old location; this ordering ensures that |
| // we can recover from things like battery pulls. |
| return ok(); |
| |
| fail: |
| // Nuke everything we might have already copied |
| { |
| auto to = create_data_app_package_path(to_uuid, data_app_name); |
| if (delete_dir_contents(to.c_str(), 1, nullptr) != 0) { |
| LOG(WARNING) << "Failed to rollback " << to; |
| } |
| } |
| for (auto user : users) { |
| { |
| auto to = create_data_user_de_package_path(to_uuid, user, package_name); |
| if (delete_dir_contents(to.c_str(), 1, nullptr) != 0) { |
| LOG(WARNING) << "Failed to rollback " << to; |
| } |
| } |
| { |
| auto to = create_data_user_ce_package_path(to_uuid, user, package_name); |
| if (delete_dir_contents(to.c_str(), 1, nullptr) != 0) { |
| LOG(WARNING) << "Failed to rollback " << to; |
| } |
| } |
| } |
| return res; |
| } |
| |
| binder::Status InstalldNativeService::createUserData(const std::unique_ptr<std::string>& uuid, |
| int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| if (flags & FLAG_STORAGE_DE) { |
| if (uuid_ == nullptr) { |
| if (ensure_config_user_dirs(userId) != 0) { |
| return error(StringPrintf("Failed to ensure dirs for %d", userId)); |
| } |
| } |
| } |
| |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::destroyUserData(const std::unique_ptr<std::string>& uuid, |
| int32_t userId, int32_t flags) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| binder::Status res = ok(); |
| if (flags & FLAG_STORAGE_DE) { |
| auto path = create_data_user_de_path(uuid_, userId); |
| if (delete_dir_contents_and_dir(path, true) != 0) { |
| res = error("Failed to delete " + path); |
| } |
| if (uuid_ == nullptr) { |
| path = create_data_misc_legacy_path(userId); |
| if (delete_dir_contents_and_dir(path, true) != 0) { |
| res = error("Failed to delete " + path); |
| } |
| path = create_primary_cur_profile_dir_path(userId); |
| if (delete_dir_contents_and_dir(path, true) != 0) { |
| res = error("Failed to delete " + path); |
| } |
| } |
| } |
| if (flags & FLAG_STORAGE_CE) { |
| auto path = create_data_user_ce_path(uuid_, userId); |
| if (delete_dir_contents_and_dir(path, true) != 0) { |
| res = error("Failed to delete " + path); |
| } |
| path = findDataMediaPath(uuid, userId); |
| if (delete_dir_contents_and_dir(path, true) != 0) { |
| res = error("Failed to delete " + path); |
| } |
| } |
| return res; |
| } |
| |
| binder::Status InstalldNativeService::freeCache(const std::unique_ptr<std::string>& uuid, |
| int64_t targetFreeBytes, int64_t cacheReservedBytes, int32_t flags) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| auto uuidString = uuid ? *uuid : ""; |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| auto data_path = create_data_path(uuid_); |
| auto noop = (flags & FLAG_FREE_CACHE_NOOP); |
| |
| int64_t free = data_disk_free(data_path); |
| if (free < 0) { |
| return error("Failed to determine free space for " + data_path); |
| } |
| |
| int64_t cleared = 0; |
| int64_t needed = targetFreeBytes - free; |
| LOG(DEBUG) << "Device " << data_path << " has " << free << " free; requested " |
| << targetFreeBytes << "; needed " << needed; |
| |
| if (free >= targetFreeBytes) { |
| return ok(); |
| } |
| |
| if (flags & FLAG_FREE_CACHE_V2) { |
| // This new cache strategy fairly removes files from UIDs by deleting |
| // files from the UIDs which are most over their allocated quota |
| |
| // 1. Create trackers for every known UID |
| ATRACE_BEGIN("create"); |
| std::unordered_map<uid_t, std::shared_ptr<CacheTracker>> trackers; |
| for (auto user : get_known_users(uuid_)) { |
| FTS *fts; |
| FTSENT *p; |
| auto ce_path = create_data_user_ce_path(uuid_, user); |
| auto de_path = create_data_user_de_path(uuid_, user); |
| auto media_path = findDataMediaPath(uuid, user) + "/Android/data/"; |
| char *argv[] = { (char*) ce_path.c_str(), (char*) de_path.c_str(), |
| (char*) media_path.c_str(), nullptr }; |
| if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr))) { |
| return error("Failed to fts_open"); |
| } |
| while ((p = fts_read(fts)) != nullptr) { |
| if (p->fts_info == FTS_D && p->fts_level == 1) { |
| uid_t uid = p->fts_statp->st_uid; |
| if (multiuser_get_app_id(uid) == AID_MEDIA_RW) { |
| uid = (multiuser_get_app_id(p->fts_statp->st_gid) - AID_EXT_GID_START) |
| + AID_APP_START; |
| } |
| auto search = trackers.find(uid); |
| if (search != trackers.end()) { |
| search->second->addDataPath(p->fts_path); |
| } else { |
| auto tracker = std::shared_ptr<CacheTracker>(new CacheTracker( |
| multiuser_get_user_id(uid), multiuser_get_app_id(uid), uuidString)); |
| tracker->addDataPath(p->fts_path); |
| { |
| std::lock_guard<std::recursive_mutex> lock(mQuotasLock); |
| tracker->cacheQuota = mCacheQuotas[uid]; |
| } |
| if (tracker->cacheQuota == 0) { |
| #if MEASURE_DEBUG |
| LOG(WARNING) << "UID " << uid << " has no cache quota; assuming 64MB"; |
| #endif |
| tracker->cacheQuota = 67108864; |
| } |
| trackers[uid] = tracker; |
| } |
| fts_set(fts, p, FTS_SKIP); |
| } |
| } |
| fts_close(fts); |
| } |
| ATRACE_END(); |
| |
| // 2. Populate tracker stats and insert into priority queue |
| ATRACE_BEGIN("populate"); |
| int64_t cacheTotal = 0; |
| auto cmp = [](std::shared_ptr<CacheTracker> left, std::shared_ptr<CacheTracker> right) { |
| return (left->getCacheRatio() < right->getCacheRatio()); |
| }; |
| std::priority_queue<std::shared_ptr<CacheTracker>, |
| std::vector<std::shared_ptr<CacheTracker>>, decltype(cmp)> queue(cmp); |
| for (const auto& it : trackers) { |
| it.second->loadStats(); |
| queue.push(it.second); |
| cacheTotal += it.second->cacheUsed; |
| } |
| ATRACE_END(); |
| |
| // 3. Bounce across the queue, freeing items from whichever tracker is |
| // the most over their assigned quota |
| ATRACE_BEGIN("bounce"); |
| std::shared_ptr<CacheTracker> active; |
| while (active || !queue.empty()) { |
| // Only look at apps under quota when explicitly requested |
| if (active && (active->getCacheRatio() < 10000) |
| && !(flags & FLAG_FREE_CACHE_V2_DEFY_QUOTA)) { |
| LOG(DEBUG) << "Active ratio " << active->getCacheRatio() |
| << " isn't over quota, and defy not requested"; |
| break; |
| } |
| |
| // Only keep clearing when we haven't pushed into reserved area |
| if (cacheReservedBytes > 0 && cleared >= (cacheTotal - cacheReservedBytes)) { |
| LOG(DEBUG) << "Refusing to clear cached data in reserved space"; |
| break; |
| } |
| |
| // Find the best tracker to work with; this might involve swapping |
| // if the active tracker is no longer the most over quota |
| bool nextBetter = active && !queue.empty() |
| && active->getCacheRatio() < queue.top()->getCacheRatio(); |
| if (!active || nextBetter) { |
| if (active) { |
| // Current tracker still has items, so we'll consider it |
| // again later once it bubbles up to surface |
| queue.push(active); |
| } |
| active = queue.top(); queue.pop(); |
| active->ensureItems(); |
| continue; |
| } |
| |
| // If no items remain, go find another tracker |
| if (active->items.empty()) { |
| active = nullptr; |
| continue; |
| } else { |
| auto item = active->items.back(); |
| active->items.pop_back(); |
| |
| LOG(DEBUG) << "Purging " << item->toString() << " from " << active->toString(); |
| if (!noop) { |
| item->purge(); |
| } |
| active->cacheUsed -= item->size; |
| needed -= item->size; |
| cleared += item->size; |
| } |
| |
| // Verify that we're actually done before bailing, since sneaky |
| // apps might be using hardlinks |
| if (needed <= 0) { |
| free = data_disk_free(data_path); |
| needed = targetFreeBytes - free; |
| if (needed <= 0) { |
| break; |
| } else { |
| LOG(WARNING) << "Expected to be done but still need " << needed; |
| } |
| } |
| } |
| ATRACE_END(); |
| |
| } else { |
| return error("Legacy cache logic no longer supported"); |
| } |
| |
| free = data_disk_free(data_path); |
| if (free >= targetFreeBytes) { |
| return ok(); |
| } else { |
| return error(StringPrintf("Failed to free up %" PRId64 " on %s; final free space %" PRId64, |
| targetFreeBytes, data_path.c_str(), free)); |
| } |
| } |
| |
| binder::Status InstalldNativeService::rmdex(const std::string& codePath, |
| const std::string& instructionSet) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PATH(codePath); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| char dex_path[PKG_PATH_MAX]; |
| |
| const char* path = codePath.c_str(); |
| const char* instruction_set = instructionSet.c_str(); |
| |
| if (validate_apk_path(path) && validate_system_app_path(path)) { |
| return error("Invalid path " + codePath); |
| } |
| |
| if (!create_cache_path(dex_path, path, instruction_set)) { |
| return error("Failed to create cache path for " + codePath); |
| } |
| |
| ALOGV("unlink %s\n", dex_path); |
| if (unlink(dex_path) < 0) { |
| // It's ok if we don't have a dalvik cache path. Report error only when the path exists |
| // but could not be unlinked. |
| if (errno != ENOENT) { |
| return error(StringPrintf("Failed to unlink %s", dex_path)); |
| } |
| } |
| return ok(); |
| } |
| |
| struct stats { |
| int64_t codeSize; |
| int64_t dataSize; |
| int64_t cacheSize; |
| }; |
| |
| #if MEASURE_DEBUG |
| static std::string toString(std::vector<int64_t> values) { |
| std::stringstream res; |
| res << "["; |
| for (size_t i = 0; i < values.size(); i++) { |
| res << values[i]; |
| if (i < values.size() - 1) { |
| res << ","; |
| } |
| } |
| res << "]"; |
| return res.str(); |
| } |
| #endif |
| |
| static void collectQuotaStats(const std::string& uuid, int32_t userId, |
| int32_t appId, struct stats* stats, struct stats* extStats) { |
| int64_t space; |
| if (stats != nullptr) { |
| uid_t uid = multiuser_get_uid(userId, appId); |
| if ((space = GetOccupiedSpaceForUid(uuid, uid)) != -1) { |
| stats->dataSize += space; |
| } |
| |
| int cacheGid = multiuser_get_cache_gid(userId, appId); |
| if (cacheGid != -1) { |
| if ((space = GetOccupiedSpaceForGid(uuid, cacheGid)) != -1) { |
| stats->cacheSize += space; |
| } |
| } |
| |
| int sharedGid = multiuser_get_shared_gid(0, appId); |
| if (sharedGid != -1) { |
| if ((space = GetOccupiedSpaceForGid(uuid, sharedGid)) != -1) { |
| stats->codeSize += space; |
| } |
| } |
| } |
| |
| if (extStats != nullptr) { |
| int extGid = multiuser_get_ext_gid(userId, appId); |
| if (extGid != -1) { |
| if ((space = GetOccupiedSpaceForGid(uuid, extGid)) != -1) { |
| extStats->dataSize += space; |
| } |
| } |
| |
| int extCacheGid = multiuser_get_ext_cache_gid(userId, appId); |
| if (extCacheGid != -1) { |
| if ((space = GetOccupiedSpaceForGid(uuid, extCacheGid)) != -1) { |
| extStats->dataSize += space; |
| extStats->cacheSize += space; |
| } |
| } |
| } |
| } |
| |
| static void collectManualStats(const std::string& path, struct stats* stats) { |
| DIR *d; |
| int dfd; |
| struct dirent *de; |
| struct stat s; |
| |
| d = opendir(path.c_str()); |
| if (d == nullptr) { |
| if (errno != ENOENT) { |
| PLOG(WARNING) << "Failed to open " << path; |
| } |
| return; |
| } |
| dfd = dirfd(d); |
| while ((de = readdir(d))) { |
| const char *name = de->d_name; |
| |
| int64_t size = 0; |
| if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { |
| size = s.st_blocks * 512; |
| } |
| |
| if (de->d_type == DT_DIR) { |
| if (!strcmp(name, ".")) { |
| // Don't recurse, but still count node size |
| } else if (!strcmp(name, "..")) { |
| // Don't recurse or count node size |
| continue; |
| } else { |
| // Measure all children nodes |
| size = 0; |
| calculate_tree_size(StringPrintf("%s/%s", path.c_str(), name), &size); |
| } |
| |
| if (!strcmp(name, "cache") || !strcmp(name, "code_cache")) { |
| stats->cacheSize += size; |
| } |
| } |
| |
| // Legacy symlink isn't owned by app |
| if (de->d_type == DT_LNK && !strcmp(name, "lib")) { |
| continue; |
| } |
| |
| // Everything found inside is considered data |
| stats->dataSize += size; |
| } |
| closedir(d); |
| } |
| |
| static void collectManualStatsForUser(const std::string& path, struct stats* stats, |
| bool exclude_apps = false) { |
| DIR *d; |
| int dfd; |
| struct dirent *de; |
| struct stat s; |
| |
| d = opendir(path.c_str()); |
| if (d == nullptr) { |
| if (errno != ENOENT) { |
| PLOG(WARNING) << "Failed to open " << path; |
| } |
| return; |
| } |
| dfd = dirfd(d); |
| while ((de = readdir(d))) { |
| if (de->d_type == DT_DIR) { |
| const char *name = de->d_name; |
| if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) != 0) { |
| continue; |
| } |
| int32_t user_uid = multiuser_get_app_id(s.st_uid); |
| if (!strcmp(name, ".") || !strcmp(name, "..")) { |
| continue; |
| } else if (exclude_apps && (user_uid >= AID_APP_START && user_uid <= AID_APP_END)) { |
| continue; |
| } else { |
| collectManualStats(StringPrintf("%s/%s", path.c_str(), name), stats); |
| } |
| } |
| } |
| closedir(d); |
| } |
| |
| static void collectManualExternalStatsForUser(const std::string& path, struct stats* stats) { |
| FTS *fts; |
| FTSENT *p; |
| char *argv[] = { (char*) path.c_str(), nullptr }; |
| if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr))) { |
| PLOG(ERROR) << "Failed to fts_open " << path; |
| return; |
| } |
| while ((p = fts_read(fts)) != nullptr) { |
| p->fts_number = p->fts_parent->fts_number; |
| switch (p->fts_info) { |
| case FTS_D: |
| if (p->fts_level == 4 |
| && !strcmp(p->fts_name, "cache") |
| && !strcmp(p->fts_parent->fts_parent->fts_name, "data") |
| && !strcmp(p->fts_parent->fts_parent->fts_parent->fts_name, "Android")) { |
| p->fts_number = 1; |
| } |
| [[fallthrough]]; // to count the directory |
| case FTS_DEFAULT: |
| case FTS_F: |
| case FTS_SL: |
| case FTS_SLNONE: |
| int64_t size = (p->fts_statp->st_blocks * 512); |
| if (p->fts_number == 1) { |
| stats->cacheSize += size; |
| } |
| stats->dataSize += size; |
| break; |
| } |
| } |
| fts_close(fts); |
| } |
| |
| binder::Status InstalldNativeService::getAppSize(const std::unique_ptr<std::string>& uuid, |
| const std::vector<std::string>& packageNames, int32_t userId, int32_t flags, |
| int32_t appId, const std::vector<int64_t>& ceDataInodes, |
| const std::vector<std::string>& codePaths, std::vector<int64_t>* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| for (const auto& packageName : packageNames) { |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| } |
| for (const auto& codePath : codePaths) { |
| CHECK_ARGUMENT_PATH(codePath); |
| } |
| // NOTE: Locking is relaxed on this method, since it's limited to |
| // read-only measurements without mutation. |
| |
| // When modifying this logic, always verify using tests: |
| // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetAppSize |
| |
| #if MEASURE_DEBUG |
| LOG(INFO) << "Measuring user " << userId << " app " << appId; |
| #endif |
| |
| // Here's a summary of the common storage locations across the platform, |
| // and how they're each tagged: |
| // |
| // /data/app/com.example UID system |
| // /data/app/com.example/oat UID system |
| // /data/user/0/com.example UID u0_a10 GID u0_a10 |
| // /data/user/0/com.example/cache UID u0_a10 GID u0_a10_cache |
| // /data/media/0/foo.txt UID u0_media_rw |
| // /data/media/0/bar.jpg UID u0_media_rw GID u0_media_image |
| // /data/media/0/Android/data/com.example UID u0_media_rw GID u0_a10_ext |
| // /data/media/0/Android/data/com.example/cache UID u0_media_rw GID u0_a10_ext_cache |
| // /data/media/obb/com.example UID system |
| |
| struct stats stats; |
| struct stats extStats; |
| memset(&stats, 0, sizeof(stats)); |
| memset(&extStats, 0, sizeof(extStats)); |
| |
| auto uuidString = uuid ? *uuid : ""; |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| |
| if (!IsQuotaSupported(uuidString)) { |
| flags &= ~FLAG_USE_QUOTA; |
| } |
| |
| ATRACE_BEGIN("obb"); |
| for (const auto& packageName : packageNames) { |
| auto obbCodePath = create_data_media_package_path(uuid_, userId, |
| "obb", packageName.c_str()); |
| calculate_tree_size(obbCodePath, &extStats.codeSize); |
| } |
| ATRACE_END(); |
| |
| if (flags & FLAG_USE_QUOTA && appId >= AID_APP_START) { |
| ATRACE_BEGIN("code"); |
| for (const auto& codePath : codePaths) { |
| calculate_tree_size(codePath, &stats.codeSize, -1, |
| multiuser_get_shared_gid(0, appId)); |
| } |
| ATRACE_END(); |
| |
| ATRACE_BEGIN("quota"); |
| collectQuotaStats(uuidString, userId, appId, &stats, &extStats); |
| ATRACE_END(); |
| } else { |
| ATRACE_BEGIN("code"); |
| for (const auto& codePath : codePaths) { |
| calculate_tree_size(codePath, &stats.codeSize); |
| } |
| ATRACE_END(); |
| |
| for (size_t i = 0; i < packageNames.size(); i++) { |
| const char* pkgname = packageNames[i].c_str(); |
| |
| ATRACE_BEGIN("data"); |
| auto cePath = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInodes[i]); |
| collectManualStats(cePath, &stats); |
| auto dePath = create_data_user_de_package_path(uuid_, userId, pkgname); |
| collectManualStats(dePath, &stats); |
| ATRACE_END(); |
| |
| if (!uuid) { |
| ATRACE_BEGIN("profiles"); |
| calculate_tree_size( |
| create_primary_current_profile_package_dir_path(userId, pkgname), |
| &stats.dataSize); |
| calculate_tree_size( |
| create_primary_reference_profile_package_dir_path(pkgname), |
| &stats.codeSize); |
| ATRACE_END(); |
| } |
| |
| ATRACE_BEGIN("external"); |
| auto extPath = create_data_media_package_path(uuid_, userId, "data", pkgname); |
| collectManualStats(extPath, &extStats); |
| auto mediaPath = create_data_media_package_path(uuid_, userId, "media", pkgname); |
| calculate_tree_size(mediaPath, &extStats.dataSize); |
| ATRACE_END(); |
| } |
| |
| if (!uuid) { |
| ATRACE_BEGIN("dalvik"); |
| int32_t sharedGid = multiuser_get_shared_gid(0, appId); |
| if (sharedGid != -1) { |
| calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, |
| sharedGid, -1); |
| } |
| ATRACE_END(); |
| } |
| } |
| |
| std::vector<int64_t> ret; |
| ret.push_back(stats.codeSize); |
| ret.push_back(stats.dataSize); |
| ret.push_back(stats.cacheSize); |
| ret.push_back(extStats.codeSize); |
| ret.push_back(extStats.dataSize); |
| ret.push_back(extStats.cacheSize); |
| #if MEASURE_DEBUG |
| LOG(DEBUG) << "Final result " << toString(ret); |
| #endif |
| *_aidl_return = ret; |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::getUserSize(const std::unique_ptr<std::string>& uuid, |
| int32_t userId, int32_t flags, const std::vector<int32_t>& appIds, |
| std::vector<int64_t>* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| // NOTE: Locking is relaxed on this method, since it's limited to |
| // read-only measurements without mutation. |
| |
| // When modifying this logic, always verify using tests: |
| // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetUserSize |
| |
| #if MEASURE_DEBUG |
| LOG(INFO) << "Measuring user " << userId; |
| #endif |
| |
| struct stats stats; |
| struct stats extStats; |
| memset(&stats, 0, sizeof(stats)); |
| memset(&extStats, 0, sizeof(extStats)); |
| |
| auto uuidString = uuid ? *uuid : ""; |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| |
| if (!IsQuotaSupported(uuidString)) { |
| flags &= ~FLAG_USE_QUOTA; |
| } |
| |
| if (flags & FLAG_USE_QUOTA) { |
| int64_t space; |
| |
| ATRACE_BEGIN("obb"); |
| if ((space = GetOccupiedSpaceForGid(uuidString, AID_MEDIA_OBB)) != -1) { |
| extStats.codeSize += space; |
| } |
| ATRACE_END(); |
| |
| ATRACE_BEGIN("code"); |
| calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize, -1, -1, true); |
| ATRACE_END(); |
| |
| ATRACE_BEGIN("data"); |
| auto cePath = create_data_user_ce_path(uuid_, userId); |
| collectManualStatsForUser(cePath, &stats, true); |
| auto dePath = create_data_user_de_path(uuid_, userId); |
| collectManualStatsForUser(dePath, &stats, true); |
| ATRACE_END(); |
| |
| if (!uuid) { |
| ATRACE_BEGIN("profile"); |
| auto userProfilePath = create_primary_cur_profile_dir_path(userId); |
| calculate_tree_size(userProfilePath, &stats.dataSize, -1, -1, true); |
| auto refProfilePath = create_primary_ref_profile_dir_path(); |
| calculate_tree_size(refProfilePath, &stats.codeSize, -1, -1, true); |
| ATRACE_END(); |
| } |
| |
| ATRACE_BEGIN("external"); |
| uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); |
| if ((space = GetOccupiedSpaceForUid(uuidString, uid)) != -1) { |
| extStats.dataSize += space; |
| } |
| ATRACE_END(); |
| |
| if (!uuid) { |
| ATRACE_BEGIN("dalvik"); |
| calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, |
| -1, -1, true); |
| calculate_tree_size(create_primary_cur_profile_dir_path(userId), &stats.dataSize, |
| -1, -1, true); |
| ATRACE_END(); |
| } |
| |
| ATRACE_BEGIN("quota"); |
| int64_t dataSize = extStats.dataSize; |
| for (auto appId : appIds) { |
| if (appId >= AID_APP_START) { |
| collectQuotaStats(uuidString, userId, appId, &stats, &extStats); |
| |
| #if MEASURE_DEBUG |
| // Sleep to make sure we don't lose logs |
| usleep(1); |
| #endif |
| } |
| } |
| extStats.dataSize = dataSize; |
| ATRACE_END(); |
| } else { |
| ATRACE_BEGIN("obb"); |
| auto obbPath = create_data_path(uuid_) + "/media/obb"; |
| calculate_tree_size(obbPath, &extStats.codeSize); |
| ATRACE_END(); |
| |
| ATRACE_BEGIN("code"); |
| calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize); |
| ATRACE_END(); |
| |
| ATRACE_BEGIN("data"); |
| auto cePath = create_data_user_ce_path(uuid_, userId); |
| collectManualStatsForUser(cePath, &stats); |
| auto dePath = create_data_user_de_path(uuid_, userId); |
| collectManualStatsForUser(dePath, &stats); |
| ATRACE_END(); |
| |
| if (!uuid) { |
| ATRACE_BEGIN("profile"); |
| auto userProfilePath = create_primary_cur_profile_dir_path(userId); |
| calculate_tree_size(userProfilePath, &stats.dataSize); |
| auto refProfilePath = create_primary_ref_profile_dir_path(); |
| calculate_tree_size(refProfilePath, &stats.codeSize); |
| ATRACE_END(); |
| } |
| |
| ATRACE_BEGIN("external"); |
| auto dataMediaPath = create_data_media_path(uuid_, userId); |
| collectManualExternalStatsForUser(dataMediaPath, &extStats); |
| #if MEASURE_DEBUG |
| LOG(DEBUG) << "Measured external data " << extStats.dataSize << " cache " |
| << extStats.cacheSize; |
| #endif |
| ATRACE_END(); |
| |
| if (!uuid) { |
| ATRACE_BEGIN("dalvik"); |
| calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize); |
| calculate_tree_size(create_primary_cur_profile_dir_path(userId), &stats.dataSize); |
| ATRACE_END(); |
| } |
| } |
| |
| std::vector<int64_t> ret; |
| ret.push_back(stats.codeSize); |
| ret.push_back(stats.dataSize); |
| ret.push_back(stats.cacheSize); |
| ret.push_back(extStats.codeSize); |
| ret.push_back(extStats.dataSize); |
| ret.push_back(extStats.cacheSize); |
| #if MEASURE_DEBUG |
| LOG(DEBUG) << "Final result " << toString(ret); |
| #endif |
| *_aidl_return = ret; |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::getExternalSize(const std::unique_ptr<std::string>& uuid, |
| int32_t userId, int32_t flags, const std::vector<int32_t>& appIds, |
| std::vector<int64_t>* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| // NOTE: Locking is relaxed on this method, since it's limited to |
| // read-only measurements without mutation. |
| |
| // When modifying this logic, always verify using tests: |
| // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetExternalSize |
| |
| #if MEASURE_DEBUG |
| LOG(INFO) << "Measuring external " << userId; |
| #endif |
| |
| auto uuidString = uuid ? *uuid : ""; |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| |
| int64_t totalSize = 0; |
| int64_t audioSize = 0; |
| int64_t videoSize = 0; |
| int64_t imageSize = 0; |
| int64_t appSize = 0; |
| int64_t obbSize = 0; |
| |
| if (!IsQuotaSupported(uuidString)) { |
| flags &= ~FLAG_USE_QUOTA; |
| } |
| |
| if (flags & FLAG_USE_QUOTA) { |
| int64_t space; |
| |
| ATRACE_BEGIN("quota"); |
| uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); |
| if ((space = GetOccupiedSpaceForUid(uuidString, uid)) != -1) { |
| totalSize = space; |
| } |
| |
| gid_t audioGid = multiuser_get_uid(userId, AID_MEDIA_AUDIO); |
| if ((space = GetOccupiedSpaceForGid(uuidString, audioGid)) != -1) { |
| audioSize = space; |
| } |
| gid_t videoGid = multiuser_get_uid(userId, AID_MEDIA_VIDEO); |
| if ((space = GetOccupiedSpaceForGid(uuidString, videoGid)) != -1) { |
| videoSize = space; |
| } |
| gid_t imageGid = multiuser_get_uid(userId, AID_MEDIA_IMAGE); |
| if ((space = GetOccupiedSpaceForGid(uuidString, imageGid)) != -1) { |
| imageSize = space; |
| } |
| if ((space = GetOccupiedSpaceForGid(uuidString, AID_MEDIA_OBB)) != -1) { |
| obbSize = space; |
| } |
| ATRACE_END(); |
| |
| ATRACE_BEGIN("apps"); |
| struct stats extStats; |
| memset(&extStats, 0, sizeof(extStats)); |
| for (auto appId : appIds) { |
| if (appId >= AID_APP_START) { |
| collectQuotaStats(uuidString, userId, appId, nullptr, &extStats); |
| } |
| } |
| appSize = extStats.dataSize; |
| ATRACE_END(); |
| } else { |
| ATRACE_BEGIN("manual"); |
| FTS *fts; |
| FTSENT *p; |
| auto path = create_data_media_path(uuid_, userId); |
| char *argv[] = { (char*) path.c_str(), nullptr }; |
| if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr))) { |
| return error("Failed to fts_open " + path); |
| } |
| while ((p = fts_read(fts)) != nullptr) { |
| char* ext; |
| int64_t size = (p->fts_statp->st_blocks * 512); |
| switch (p->fts_info) { |
| case FTS_F: |
| // Only categorize files not belonging to apps |
| if (p->fts_parent->fts_number == 0) { |
| ext = strrchr(p->fts_name, '.'); |
| if (ext != nullptr) { |
| switch (MatchExtension(++ext)) { |
| case AID_MEDIA_AUDIO: audioSize += size; break; |
| case AID_MEDIA_VIDEO: videoSize += size; break; |
| case AID_MEDIA_IMAGE: imageSize += size; break; |
| } |
| } |
| } |
| [[fallthrough]]; // always count against total |
| case FTS_D: |
| // Ignore data belonging to specific apps |
| p->fts_number = p->fts_parent->fts_number; |
| if (p->fts_level == 1 && !strcmp(p->fts_name, "Android")) { |
| p->fts_number = 1; |
| } |
| [[fallthrough]]; // always count against total |
| case FTS_DEFAULT: |
| case FTS_SL: |
| case FTS_SLNONE: |
| if (p->fts_parent->fts_number == 1) { |
| appSize += size; |
| } |
| totalSize += size; |
| break; |
| } |
| } |
| fts_close(fts); |
| ATRACE_END(); |
| |
| ATRACE_BEGIN("obb"); |
| auto obbPath = StringPrintf("%s/Android/obb", |
| create_data_media_path(uuid_, userId).c_str()); |
| calculate_tree_size(obbPath, &obbSize); |
| ATRACE_END(); |
| } |
| |
| std::vector<int64_t> ret; |
| ret.push_back(totalSize); |
| ret.push_back(audioSize); |
| ret.push_back(videoSize); |
| ret.push_back(imageSize); |
| ret.push_back(appSize); |
| ret.push_back(obbSize); |
| #if MEASURE_DEBUG |
| LOG(DEBUG) << "Final result " << toString(ret); |
| #endif |
| *_aidl_return = ret; |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::setAppQuota(const std::unique_ptr<std::string>& uuid, |
| int32_t userId, int32_t appId, int64_t cacheQuota) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| std::lock_guard<std::recursive_mutex> lock(mQuotasLock); |
| |
| int32_t uid = multiuser_get_uid(userId, appId); |
| mCacheQuotas[uid] = cacheQuota; |
| |
| return ok(); |
| } |
| |
| // Dumps the contents of a profile file, using pkgname's dex files for pretty |
| // printing the result. |
| binder::Status InstalldNativeService::dumpProfiles(int32_t uid, const std::string& packageName, |
| const std::string& profileName, const std::string& codePath, bool* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| CHECK_ARGUMENT_PATH(codePath); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| *_aidl_return = dump_profiles(uid, packageName, profileName, codePath); |
| return ok(); |
| } |
| |
| // Copy the contents of a system profile over the data profile. |
| binder::Status InstalldNativeService::copySystemProfile(const std::string& systemProfile, |
| int32_t packageUid, const std::string& packageName, const std::string& profileName, |
| bool* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| *_aidl_return = copy_system_profile(systemProfile, packageUid, packageName, profileName); |
| return ok(); |
| } |
| |
| // TODO: Consider returning error codes. |
| binder::Status InstalldNativeService::mergeProfiles(int32_t uid, const std::string& packageName, |
| const std::string& profileName, bool* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| *_aidl_return = analyze_primary_profiles(uid, packageName, profileName); |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::createProfileSnapshot(int32_t appId, |
| const std::string& packageName, const std::string& profileName, |
| const std::string& classpath, bool* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| *_aidl_return = create_profile_snapshot(appId, packageName, profileName, classpath); |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::destroyProfileSnapshot(const std::string& packageName, |
| const std::string& profileName) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| std::string snapshot = create_snapshot_profile_path(packageName, profileName); |
| if ((unlink(snapshot.c_str()) != 0) && (errno != ENOENT)) { |
| return error("Failed to destroy profile snapshot for " + packageName + ":" + profileName); |
| } |
| return ok(); |
| } |
| |
| static const char* getCStr(const std::unique_ptr<std::string>& data, |
| const char* default_value = nullptr) { |
| return data == nullptr ? default_value : data->c_str(); |
| } |
| binder::Status InstalldNativeService::dexopt(const std::string& apkPath, int32_t uid, |
| const std::unique_ptr<std::string>& packageName, const std::string& instructionSet, |
| int32_t dexoptNeeded, const std::unique_ptr<std::string>& outputPath, int32_t dexFlags, |
| const std::string& compilerFilter, const std::unique_ptr<std::string>& uuid, |
| const std::unique_ptr<std::string>& classLoaderContext, |
| const std::unique_ptr<std::string>& seInfo, bool downgrade, int32_t targetSdkVersion, |
| const std::unique_ptr<std::string>& profileName, |
| const std::unique_ptr<std::string>& dexMetadataPath, |
| const std::unique_ptr<std::string>& compilationReason) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| CHECK_ARGUMENT_PATH(apkPath); |
| if (packageName && *packageName != "*") { |
| CHECK_ARGUMENT_PACKAGE_NAME(*packageName); |
| } |
| CHECK_ARGUMENT_PATH(outputPath); |
| CHECK_ARGUMENT_PATH(dexMetadataPath); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* apk_path = apkPath.c_str(); |
| const char* pkgname = getCStr(packageName, "*"); |
| const char* instruction_set = instructionSet.c_str(); |
| const char* oat_dir = getCStr(outputPath); |
| const char* compiler_filter = compilerFilter.c_str(); |
| const char* volume_uuid = getCStr(uuid); |
| const char* class_loader_context = getCStr(classLoaderContext); |
| const char* se_info = getCStr(seInfo); |
| const char* profile_name = getCStr(profileName); |
| const char* dm_path = getCStr(dexMetadataPath); |
| const char* compilation_reason = getCStr(compilationReason); |
| std::string error_msg; |
| int res = android::installd::dexopt(apk_path, uid, pkgname, instruction_set, dexoptNeeded, |
| oat_dir, dexFlags, compiler_filter, volume_uuid, class_loader_context, se_info, |
| downgrade, targetSdkVersion, profile_name, dm_path, compilation_reason, &error_msg); |
| return res ? error(res, error_msg) : ok(); |
| } |
| |
| binder::Status InstalldNativeService::compileLayouts(const std::string& apkPath, |
| const std::string& packageName, |
| const std ::string& outDexFile, int uid, |
| bool* _aidl_return) { |
| const char* apk_path = apkPath.c_str(); |
| const char* package_name = packageName.c_str(); |
| const char* out_dex_file = outDexFile.c_str(); |
| *_aidl_return = android::installd::view_compiler(apk_path, package_name, out_dex_file, uid); |
| return *_aidl_return ? ok() : error("viewcompiler failed"); |
| } |
| |
| binder::Status InstalldNativeService::linkNativeLibraryDirectory( |
| const std::unique_ptr<std::string>& uuid, const std::string& packageName, |
| const std::string& nativeLibPath32, int32_t userId) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| CHECK_ARGUMENT_PATH(nativeLibPath32); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| const char* pkgname = packageName.c_str(); |
| const char* asecLibDir = nativeLibPath32.c_str(); |
| struct stat s, libStat; |
| binder::Status res = ok(); |
| |
| auto _pkgdir = create_data_user_ce_package_path(uuid_, userId, pkgname); |
| auto _libsymlink = _pkgdir + PKG_LIB_POSTFIX; |
| |
| const char* pkgdir = _pkgdir.c_str(); |
| const char* libsymlink = _libsymlink.c_str(); |
| |
| if (stat(pkgdir, &s) < 0) { |
| return error("Failed to stat " + _pkgdir); |
| } |
| |
| char *con = nullptr; |
| if (lgetfilecon(pkgdir, &con) < 0) { |
| return error("Failed to lgetfilecon " + _pkgdir); |
| } |
| |
| if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) { |
| res = error("Failed to chown " + _pkgdir); |
| goto out; |
| } |
| |
| if (chmod(pkgdir, 0700) < 0) { |
| res = error("Failed to chmod " + _pkgdir); |
| goto out; |
| } |
| |
| if (lstat(libsymlink, &libStat) < 0) { |
| if (errno != ENOENT) { |
| res = error("Failed to stat " + _libsymlink); |
| goto out; |
| } |
| } else { |
| if (S_ISDIR(libStat.st_mode)) { |
| if (delete_dir_contents(libsymlink, 1, nullptr) < 0) { |
| res = error("Failed to delete " + _libsymlink); |
| goto out; |
| } |
| } else if (S_ISLNK(libStat.st_mode)) { |
| if (unlink(libsymlink) < 0) { |
| res = error("Failed to unlink " + _libsymlink); |
| goto out; |
| } |
| } |
| } |
| |
| if (symlink(asecLibDir, libsymlink) < 0) { |
| res = error("Failed to symlink " + _libsymlink + " to " + nativeLibPath32); |
| goto out; |
| } |
| |
| if (lsetfilecon(libsymlink, con) < 0) { |
| res = error("Failed to lsetfilecon " + _libsymlink); |
| goto out; |
| } |
| |
| out: |
| free(con); |
| if (chmod(pkgdir, s.st_mode) < 0) { |
| auto msg = "Failed to cleanup chmod " + _pkgdir; |
| if (res.isOk()) { |
| res = error(msg); |
| } else { |
| PLOG(ERROR) << msg; |
| } |
| } |
| |
| if (chown(pkgdir, s.st_uid, s.st_gid) < 0) { |
| auto msg = "Failed to cleanup chown " + _pkgdir; |
| if (res.isOk()) { |
| res = error(msg); |
| } else { |
| PLOG(ERROR) << msg; |
| } |
| } |
| |
| return res; |
| } |
| |
| static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) |
| { |
| execl(kIdMapPath, kIdMapPath, "--fd", target_apk, overlay_apk, |
| StringPrintf("%d", idmap_fd).c_str(), (char*)nullptr); |
| PLOG(ERROR) << "execl (" << kIdMapPath << ") failed"; |
| } |
| |
| static void run_verify_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) |
| { |
| execl(kIdMapPath, kIdMapPath, "--verify", target_apk, overlay_apk, |
| StringPrintf("%d", idmap_fd).c_str(), (char*)nullptr); |
| PLOG(ERROR) << "execl (" << kIdMapPath << ") failed"; |
| } |
| |
| static bool delete_stale_idmap(const char* target_apk, const char* overlay_apk, |
| const char* idmap_path, int32_t uid) { |
| int idmap_fd = open(idmap_path, O_RDWR); |
| if (idmap_fd < 0) { |
| PLOG(ERROR) << "idmap open failed: " << idmap_path; |
| unlink(idmap_path); |
| return true; |
| } |
| |
| pid_t pid; |
| pid = fork(); |
| if (pid == 0) { |
| /* child -- drop privileges before continuing */ |
| if (setgid(uid) != 0) { |
| LOG(ERROR) << "setgid(" << uid << ") failed during idmap"; |
| exit(1); |
| } |
| if (setuid(uid) != 0) { |
| LOG(ERROR) << "setuid(" << uid << ") failed during idmap"; |
| exit(1); |
| } |
| if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { |
| PLOG(ERROR) << "flock(" << idmap_path << ") failed during idmap"; |
| exit(1); |
| } |
| |
| run_verify_idmap(target_apk, overlay_apk, idmap_fd); |
| exit(1); /* only if exec call to deleting stale idmap failed */ |
| } else { |
| int status = wait_child(pid); |
| close(idmap_fd); |
| |
| if (status != 0) { |
| // Failed on verifying if idmap is made from target_apk and overlay_apk. |
| LOG(DEBUG) << "delete stale idmap: " << idmap_path; |
| unlink(idmap_path); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| // Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix) |
| // eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap |
| static int flatten_path(const char *prefix, const char *suffix, |
| const char *overlay_path, char *idmap_path, size_t N) |
| { |
| if (overlay_path == nullptr || idmap_path == nullptr) { |
| return -1; |
| } |
| const size_t len_overlay_path = strlen(overlay_path); |
| // will access overlay_path + 1 further below; requires absolute path |
| if (len_overlay_path < 2 || *overlay_path != '/') { |
| return -1; |
| } |
| const size_t len_idmap_root = strlen(prefix); |
| const size_t len_suffix = strlen(suffix); |
| if (SIZE_MAX - len_idmap_root < len_overlay_path || |
| SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) { |
| // additions below would cause overflow |
| return -1; |
| } |
| if (N < len_idmap_root + len_overlay_path + len_suffix) { |
| return -1; |
| } |
| memset(idmap_path, 0, N); |
| snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix); |
| char *ch = idmap_path + len_idmap_root; |
| while (*ch != '\0') { |
| if (*ch == '/') { |
| *ch = '@'; |
| } |
| ++ch; |
| } |
| return 0; |
| } |
| |
| binder::Status InstalldNativeService::idmap(const std::string& targetApkPath, |
| const std::string& overlayApkPath, int32_t uid) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PATH(targetApkPath); |
| CHECK_ARGUMENT_PATH(overlayApkPath); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* target_apk = targetApkPath.c_str(); |
| const char* overlay_apk = overlayApkPath.c_str(); |
| ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid); |
| |
| int idmap_fd = -1; |
| char idmap_path[PATH_MAX]; |
| struct stat idmap_stat; |
| bool outdated = false; |
| |
| if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, |
| idmap_path, sizeof(idmap_path)) == -1) { |
| ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); |
| goto fail; |
| } |
| |
| if (stat(idmap_path, &idmap_stat) < 0) { |
| outdated = true; |
| } else { |
| outdated = delete_stale_idmap(target_apk, overlay_apk, idmap_path, uid); |
| } |
| |
| if (outdated) { |
| idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644); |
| } else { |
| idmap_fd = open(idmap_path, O_RDWR); |
| } |
| |
| if (idmap_fd < 0) { |
| ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno)); |
| goto fail; |
| } |
| if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) { |
| ALOGE("idmap cannot chown '%s'\n", idmap_path); |
| goto fail; |
| } |
| if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) { |
| ALOGE("idmap cannot chmod '%s'\n", idmap_path); |
| goto fail; |
| } |
| |
| if (!outdated) { |
| close(idmap_fd); |
| return ok(); |
| } |
| |
| pid_t pid; |
| pid = fork(); |
| if (pid == 0) { |
| /* child -- drop privileges before continuing */ |
| if (setgid(uid) != 0) { |
| ALOGE("setgid(%d) failed during idmap\n", uid); |
| exit(1); |
| } |
| if (setuid(uid) != 0) { |
| ALOGE("setuid(%d) failed during idmap\n", uid); |
| exit(1); |
| } |
| if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { |
| ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno)); |
| exit(1); |
| } |
| |
| run_idmap(target_apk, overlay_apk, idmap_fd); |
| exit(1); /* only if exec call to idmap failed */ |
| } else { |
| int status = wait_child(pid); |
| if (status != 0) { |
| ALOGE("idmap failed, status=0x%04x\n", status); |
| goto fail; |
| } |
| } |
| |
| close(idmap_fd); |
| return ok(); |
| fail: |
| if (idmap_fd >= 0) { |
| close(idmap_fd); |
| unlink(idmap_path); |
| } |
| return error(); |
| } |
| |
| binder::Status InstalldNativeService::removeIdmap(const std::string& overlayApkPath) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PATH(overlayApkPath); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* overlay_apk = overlayApkPath.c_str(); |
| char idmap_path[PATH_MAX]; |
| |
| if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, |
| idmap_path, sizeof(idmap_path)) == -1) { |
| ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); |
| return error(); |
| } |
| if (unlink(idmap_path) < 0) { |
| ALOGE("couldn't unlink idmap file %s\n", idmap_path); |
| return error(); |
| } |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::restoreconAppData(const std::unique_ptr<std::string>& uuid, |
| const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, |
| const std::string& seInfo) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| binder::Status res = ok(); |
| |
| // SELINUX_ANDROID_RESTORECON_DATADATA flag is set by libselinux. Not needed here. |
| unsigned int seflags = SELINUX_ANDROID_RESTORECON_RECURSE; |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| const char* pkgName = packageName.c_str(); |
| const char* seinfo = seInfo.c_str(); |
| |
| uid_t uid = multiuser_get_uid(userId, appId); |
| if (flags & FLAG_STORAGE_CE) { |
| auto path = create_data_user_ce_package_path(uuid_, userId, pkgName); |
| if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { |
| res = error("restorecon failed for " + path); |
| } |
| } |
| if (flags & FLAG_STORAGE_DE) { |
| auto path = create_data_user_de_package_path(uuid_, userId, pkgName); |
| if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { |
| res = error("restorecon failed for " + path); |
| } |
| } |
| return res; |
| } |
| |
| binder::Status InstalldNativeService::createOatDir(const std::string& oatDir, |
| const std::string& instructionSet) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PATH(oatDir); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* oat_dir = oatDir.c_str(); |
| const char* instruction_set = instructionSet.c_str(); |
| char oat_instr_dir[PKG_PATH_MAX]; |
| |
| if (validate_apk_path(oat_dir)) { |
| return error("Invalid path " + oatDir); |
| } |
| if (fs_prepare_dir(oat_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { |
| return error("Failed to prepare " + oatDir); |
| } |
| if (selinux_android_restorecon(oat_dir, 0)) { |
| return error("Failed to restorecon " + oatDir); |
| } |
| snprintf(oat_instr_dir, PKG_PATH_MAX, "%s/%s", oat_dir, instruction_set); |
| if (fs_prepare_dir(oat_instr_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { |
| return error(StringPrintf("Failed to prepare %s", oat_instr_dir)); |
| } |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::rmPackageDir(const std::string& packageDir) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PATH(packageDir); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| if (validate_apk_path(packageDir.c_str())) { |
| return error("Invalid path " + packageDir); |
| } |
| if (rm_package_dir(packageDir) != 0) { |
| return error("Failed to delete " + packageDir); |
| } |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::linkFile(const std::string& relativePath, |
| const std::string& fromBase, const std::string& toBase) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PATH(fromBase); |
| CHECK_ARGUMENT_PATH(toBase); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* relative_path = relativePath.c_str(); |
| const char* from_base = fromBase.c_str(); |
| const char* to_base = toBase.c_str(); |
| char from_path[PKG_PATH_MAX]; |
| char to_path[PKG_PATH_MAX]; |
| snprintf(from_path, PKG_PATH_MAX, "%s/%s", from_base, relative_path); |
| snprintf(to_path, PKG_PATH_MAX, "%s/%s", to_base, relative_path); |
| |
| if (validate_apk_path_subdirs(from_path)) { |
| return error(StringPrintf("Invalid from path %s", from_path)); |
| } |
| |
| if (validate_apk_path_subdirs(to_path)) { |
| return error(StringPrintf("Invalid to path %s", to_path)); |
| } |
| |
| if (link(from_path, to_path) < 0) { |
| return error(StringPrintf("Failed to link from %s to %s", from_path, to_path)); |
| } |
| |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::moveAb(const std::string& apkPath, |
| const std::string& instructionSet, const std::string& outputPath) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PATH(apkPath); |
| CHECK_ARGUMENT_PATH(outputPath); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* apk_path = apkPath.c_str(); |
| const char* instruction_set = instructionSet.c_str(); |
| const char* oat_dir = outputPath.c_str(); |
| |
| bool success = move_ab(apk_path, instruction_set, oat_dir); |
| return success ? ok() : error(); |
| } |
| |
| binder::Status InstalldNativeService::deleteOdex(const std::string& apkPath, |
| const std::string& instructionSet, const std::unique_ptr<std::string>& outputPath) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PATH(apkPath); |
| CHECK_ARGUMENT_PATH(outputPath); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| const char* apk_path = apkPath.c_str(); |
| const char* instruction_set = instructionSet.c_str(); |
| const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; |
| |
| bool res = delete_odex(apk_path, instruction_set, oat_dir); |
| return res ? ok() : error(); |
| } |
| |
| // This kernel feature is experimental. |
| // TODO: remove local definition once upstreamed |
| #ifndef FS_IOC_ENABLE_VERITY |
| |
| #define FS_IOC_ENABLE_VERITY _IO('f', 133) |
| #define FS_IOC_SET_VERITY_MEASUREMENT _IOW('f', 134, struct fsverity_measurement) |
| |
| #define FS_VERITY_ALG_SHA256 1 |
| |
| struct fsverity_measurement { |
| __u16 digest_algorithm; |
| __u16 digest_size; |
| __u32 reserved1; |
| __u64 reserved2[3]; |
| __u8 digest[]; |
| }; |
| |
| #endif |
| |
| binder::Status InstalldNativeService::installApkVerity(const std::string& filePath, |
| const ::android::base::unique_fd& verityInputAshmem, int32_t contentSize) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PATH(filePath); |
| std::lock_guard<std::recursive_mutex> lock(mLock); |
| |
| if (!android::base::GetBoolProperty(kPropApkVerityMode, false)) { |
| return ok(); |
| } |
| #ifndef NDEBUG |
| ASSERT_PAGE_SIZE_4K(); |
| #endif |
| // TODO: also check fsverity support in the current file system if compiled with DEBUG. |
| // TODO: change ashmem to some temporary file to support huge apk. |
| if (!ashmem_valid(verityInputAshmem.get())) { |
| return error("FD is not an ashmem"); |
| } |
| |
| // 1. Seek to the next page boundary beyond the end of the file. |
| ::android::base::unique_fd wfd(open(filePath.c_str(), O_WRONLY)); |
| if (wfd.get() < 0) { |
| return error("Failed to open " + filePath); |
| } |
| struct stat st; |
| if (fstat(wfd.get(), &st) < 0) { |
| return error("Failed to stat " + filePath); |
| } |
| // fsverity starts from the block boundary. |
| off_t padding = kVerityPageSize - st.st_size % kVerityPageSize; |
| if (padding == kVerityPageSize) { |
| padding = 0; |
| } |
| if (lseek(wfd.get(), st.st_size + padding, SEEK_SET) < 0) { |
| return error("Failed to lseek " + filePath); |
| } |
| |
|