| /* |
| ** 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" |
| |
| #include <errno.h> |
| #include <fts.h> |
| #include <inttypes.h> |
| #include <linux/fsverity.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/capability.h> |
| #include <sys/file.h> |
| #include <sys/ioctl.h> |
| #include <sys/mman.h> |
| #include <sys/mount.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 <algorithm> |
| #include <filesystem> |
| #include <fstream> |
| #include <functional> |
| #include <regex> |
| #include <unordered_set> |
| |
| #include <android-base/file.h> |
| #include <android-base/logging.h> |
| #include <android-base/parseint.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/misc.h> |
| #include <cutils/properties.h> |
| #include <cutils/sched_policy.h> |
| #include <linux/quota.h> |
| #include <log/log.h> // TODO: Move everything to base/logging. |
| #include <logwrap/logwrap.h> |
| #include <private/android_filesystem_config.h> |
| #include <private/android_projectid_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 "CacheTracker.h" |
| #include "CrateManager.h" |
| #include "MatchExtensionGen.h" |
| #include "QuotaUtils.h" |
| #include "SysTrace.h" |
| |
| #ifndef LOG_TAG |
| #define LOG_TAG "installd" |
| #endif |
| |
| #define GRANULAR_LOCKS |
| |
| using android::base::ParseUint; |
| using android::base::Split; |
| using android::base::StringPrintf; |
| using android::base::unique_fd; |
| using android::os::ParcelFileDescriptor; |
| 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 char* kDataMirrorCePath = "/data_mirror/data_ce"; |
| static constexpr const char* kDataMirrorDePath = "/data_mirror/data_de"; |
| static constexpr const char* kMiscMirrorCePath = "/data_mirror/misc_ce"; |
| static constexpr const char* kMiscMirrorDePath = "/data_mirror/misc_de"; |
| |
| 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* kFuseProp = "persist.sys.fuse"; |
| |
| /** |
| * Property to control if app data isolation is enabled. |
| */ |
| static constexpr const char* kAppDataIsolationEnabledProperty = "persist.zygote.app_data_isolation"; |
| static constexpr const char* kMntSdcardfs = "/mnt/runtime/default/"; |
| static constexpr const char* kMntFuse = "/mnt/pass_through/0/"; |
| |
| static std::atomic<bool> sAppDataIsolationEnabled(false); |
| |
| /** |
| * Flag to control if project ids are supported for internal storage |
| */ |
| static std::atomic<bool> sUsingProjectIdsFlag(false); |
| static std::once_flag flag; |
| |
| namespace { |
| |
| 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 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::optional<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::optional<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::optional<std::string>& path) { |
| if (path) { |
| return checkArgumentPath(*path); |
| } else { |
| return ok(); |
| } |
| } |
| |
| binder::Status checkArgumentFileName(const std::string& path) { |
| if (path.empty()) { |
| return exception(binder::Status::EX_ILLEGAL_ARGUMENT, "Missing name"); |
| } |
| for (const char& c : path) { |
| if (c == '\0' || c == '\n' || c == '/') { |
| return exception(binder::Status::EX_ILLEGAL_ARGUMENT, |
| StringPrintf("Name %s is malformed", path.c_str())); |
| } |
| } |
| return ok(); |
| } |
| |
| binder::Status checkUidInAppRange(int32_t appUid) { |
| if (FIRST_APPLICATION_UID <= appUid && appUid <= LAST_APPLICATION_UID) { |
| return ok(); |
| } |
| return exception(binder::Status::EX_ILLEGAL_ARGUMENT, |
| StringPrintf("UID %d is outside of the range", appUid)); |
| } |
| |
| #define ENFORCE_UID(uid) { \ |
| binder::Status status = checkUid((uid)); \ |
| if (!status.isOk()) { \ |
| return status; \ |
| } \ |
| } |
| |
| // we could have tighter checks, but this is only to avoid hard errors. Negative values are defined |
| // in UserHandle.java and carry specific meanings that may not be handled by certain APIs here. |
| #define ENFORCE_VALID_USER(userId) \ |
| { \ |
| if (static_cast<uid_t>(userId) >= std::numeric_limits<uid_t>::max() / AID_USER_OFFSET) { \ |
| return error("userId invalid: " + std::to_string(userId)); \ |
| } \ |
| } |
| |
| #define ENFORCE_VALID_USER_OR_NULL(userId) \ |
| { \ |
| if (static_cast<uid_t>(userId) != USER_NULL) { \ |
| ENFORCE_VALID_USER(userId); \ |
| } \ |
| } |
| |
| #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 CHECK_ARGUMENT_FILE_NAME(path) \ |
| { \ |
| binder::Status status = checkArgumentFileName((path)); \ |
| if (!status.isOk()) { \ |
| return status; \ |
| } \ |
| } |
| |
| #define CHECK_ARGUMENT_UID_IN_APP_RANGE(uid) \ |
| { \ |
| binder::Status status = checkUidInAppRange((uid)); \ |
| if (!status.isOk()) { \ |
| return status; \ |
| } \ |
| } |
| |
| #ifdef GRANULAR_LOCKS |
| |
| /** |
| * This class obtains in constructor and keeps the local strong pointer to the RefLock. |
| * On destruction, it checks if there are any other strong pointers, and remove the map entry if |
| * this was the last one. |
| */ |
| template <class Key, class Mutex> |
| struct LocalLockHolder { |
| using WeakPointer = std::weak_ptr<Mutex>; |
| using StrongPointer = std::shared_ptr<Mutex>; |
| using Map = std::unordered_map<Key, WeakPointer>; |
| using MapLock = std::recursive_mutex; |
| |
| LocalLockHolder(Key key, Map& map, MapLock& mapLock) |
| : mKey(std::move(key)), mMap(map), mMapLock(mapLock) { |
| std::lock_guard lock(mMapLock); |
| auto& weakPtr = mMap[mKey]; |
| |
| // Check if the RefLock is still alive. |
| mRefLock = weakPtr.lock(); |
| if (!mRefLock) { |
| // Create a new lock. |
| mRefLock = std::make_shared<Mutex>(); |
| weakPtr = mRefLock; |
| } |
| } |
| LocalLockHolder(LocalLockHolder&& other) noexcept |
| : mKey(std::move(other.mKey)), |
| mMap(other.mMap), |
| mMapLock(other.mMapLock), |
| mRefLock(std::move(other.mRefLock)) { |
| other.mRefLock.reset(); |
| } |
| ~LocalLockHolder() { |
| if (!mRefLock) { |
| return; |
| } |
| |
| std::lock_guard lock(mMapLock); |
| // Clear the strong pointer. |
| mRefLock.reset(); |
| auto found = mMap.find(mKey); |
| if (found == mMap.end()) { |
| return; |
| } |
| const auto& weakPtr = found->second; |
| // If this was the last pointer then it's ok to remove the map entry. |
| if (weakPtr.expired()) { |
| mMap.erase(found); |
| } |
| } |
| |
| void lock() { mRefLock->lock(); } |
| void unlock() { mRefLock->unlock(); } |
| void lock_shared() { mRefLock->lock_shared(); } |
| void unlock_shared() { mRefLock->unlock_shared(); } |
| |
| private: |
| Key mKey; |
| Map& mMap; |
| MapLock& mMapLock; |
| StrongPointer mRefLock; |
| }; |
| |
| using UserLock = LocalLockHolder<userid_t, std::shared_mutex>; |
| using UserWriteLockGuard = std::unique_lock<UserLock>; |
| using UserReadLockGuard = std::shared_lock<UserLock>; |
| |
| using PackageLock = LocalLockHolder<std::string, std::recursive_mutex>; |
| using PackageLockGuard = std::lock_guard<PackageLock>; |
| |
| #define LOCK_USER() \ |
| UserLock localUserLock(userId, mUserIdLock, mLock); \ |
| UserWriteLockGuard userLock(localUserLock) |
| |
| #define LOCK_USER_READ() \ |
| UserLock localUserLock(userId, mUserIdLock, mLock); \ |
| UserReadLockGuard userLock(localUserLock) |
| |
| #define LOCK_PACKAGE() \ |
| PackageLock localPackageLock(packageName, mPackageNameLock, mLock); \ |
| PackageLockGuard packageLock(localPackageLock) |
| |
| #define LOCK_PACKAGE_USER() \ |
| LOCK_USER_READ(); \ |
| LOCK_PACKAGE() |
| |
| #else |
| |
| #define LOCK_USER() std::lock_guard lock(mLock) |
| #define LOCK_PACKAGE() std::lock_guard lock(mLock) |
| #define LOCK_PACKAGE_USER() \ |
| (void)userId; \ |
| std::lock_guard lock(mLock) |
| |
| #endif // GRANULAR_LOCKS |
| |
| } // namespace |
| |
| binder::Status InstalldNativeService::FsveritySetupAuthToken::authenticate( |
| const ParcelFileDescriptor& authFd, int32_t appUid, int32_t userId) { |
| int open_flags = fcntl(authFd.get(), F_GETFL); |
| if (open_flags < 0) { |
| return exception(binder::Status::EX_SERVICE_SPECIFIC, "fcntl failed"); |
| } |
| if ((open_flags & O_ACCMODE) != O_WRONLY && (open_flags & O_ACCMODE) != O_RDWR) { |
| return exception(binder::Status::EX_SECURITY, "Received FD with unexpected open flag"); |
| } |
| if (fstat(authFd.get(), &this->mStatFromAuthFd) < 0) { |
| return exception(binder::Status::EX_SERVICE_SPECIFIC, "fstat failed"); |
| } |
| if (!S_ISREG(this->mStatFromAuthFd.st_mode)) { |
| return exception(binder::Status::EX_SECURITY, "Not a regular file"); |
| } |
| // Don't accept a file owned by a different app. |
| uid_t uid = multiuser_get_uid(userId, appUid); |
| if (this->mStatFromAuthFd.st_uid != uid) { |
| return exception(binder::Status::EX_SERVICE_SPECIFIC, "File not owned by appUid"); |
| } |
| return ok(); |
| } |
| |
| bool InstalldNativeService::FsveritySetupAuthToken::isSameStat(const struct stat& st) const { |
| return memcmp(&st, &mStatFromAuthFd, sizeof(st)) == 0; |
| } |
| |
| 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(); |
| sAppDataIsolationEnabled = android::base::GetBoolProperty( |
| kAppDataIsolationEnabledProperty, true); |
| return android::OK; |
| } |
| |
| status_t InstalldNativeService::dump(int fd, const Vector<String16>& /* args */) { |
| { |
| std::lock_guard<std::recursive_mutex> lock(mMountsLock); |
| dprintf(fd, "Storage mounts:\n"); |
| for (const auto& n : mStorageMounts) { |
| dprintf(fd, " %s = %s\n", n.first.c_str(), n.second.c_str()); |
| } |
| } |
| |
| { |
| std::lock_guard<std::recursive_mutex> lock(mQuotasLock); |
| dprintf(fd, "Per-UID cache quotas:\n"); |
| for (const auto& n : mCacheQuotas) { |
| dprintf(fd, " %d = %" PRId64 "\n", n.first, n.second); |
| } |
| } |
| |
| dprintf(fd, "is_dexopt_blocked:%d\n", android::installd::is_dexopt_blocked()); |
| |
| 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) { |
| ScopedTrace tracer("restorecon-lazy"); |
| int res = 0; |
| char* before = nullptr; |
| char* after = nullptr; |
| if (!existing) { |
| ScopedTrace tracer("new-path"); |
| 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; |
| } |
| return res; |
| } |
| |
| // 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)) { |
| ScopedTrace tracer("label-change"); |
| 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 bool internal_storage_has_project_id() { |
| // The following path is populated in setFirstBoot, so if this file is present |
| // then project ids can be used. Using call once to cache the result of this check |
| // to avoid having to check the file presence again and again. |
| std::call_once(flag, []() { |
| auto using_project_ids = |
| StringPrintf("%smisc/installd/using_project_ids", android_data_dir.c_str()); |
| sUsingProjectIdsFlag = access(using_project_ids.c_str(), F_OK) == 0; |
| }); |
| // return sUsingProjectIdsFlag; |
| return false; |
| } |
| |
| static int prepare_app_dir(const std::string& path, mode_t target_mode, uid_t uid, gid_t gid, |
| long project_id) { |
| { |
| ScopedTrace tracer("prepare-dir"); |
| if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, gid) != 0) { |
| PLOG(ERROR) << "Failed to prepare " << path; |
| return -1; |
| } |
| } |
| if (internal_storage_has_project_id()) { |
| ScopedTrace tracer("set-quota"); |
| return set_quota_project_id(path, project_id, true); |
| } |
| return 0; |
| } |
| |
| static int prepare_app_cache_dir(const std::string& parent, const char* name, mode_t target_mode, |
| uid_t uid, gid_t gid, long project_id) { |
| auto path = StringPrintf("%s/%s", parent.c_str(), name); |
| int ret; |
| { |
| ScopedTrace tracer("prepare-cache-dir"); |
| ret = prepare_app_cache_dir(parent, name, target_mode, uid, gid); |
| } |
| if (ret == 0 && internal_storage_has_project_id()) { |
| ScopedTrace tracer("set-quota-cache-dir"); |
| return set_quota_project_id(path, project_id, true); |
| } |
| return ret; |
| } |
| |
| static bool prepare_app_profile_dir(const std::string& packageName, int32_t appId, int32_t userId) { |
| ScopedTrace tracer("prepare-app-profile"); |
| 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; |
| } |
| if (selinux_android_restorecon(profile_dir.c_str(), 0)) { |
| PLOG(ERROR) << "Failed to restorecon " << 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; |
| } |
| |
| static bool chown_app_dir(const std::string& path, uid_t uid, uid_t previousUid, gid_t cacheGid) { |
| FTS* fts; |
| char *argv[] = { (char*) path.c_str(), nullptr }; |
| if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr))) { |
| return false; |
| } |
| for (FTSENT* p; (p = fts_read(fts)) != nullptr;) { |
| if (p->fts_info == FTS_D && p->fts_level == 1 |
| && (strcmp(p->fts_name, "cache") == 0 |
| || strcmp(p->fts_name, "code_cache") == 0)) { |
| // Mark cache dirs |
| p->fts_number = 1; |
| } else { |
| // Inherit parent's number |
| p->fts_number = p->fts_parent->fts_number; |
| } |
| |
| switch (p->fts_info) { |
| case FTS_D: |
| case FTS_F: |
| case FTS_SL: |
| case FTS_SLNONE: |
| if (p->fts_statp->st_uid == previousUid) { |
| if (lchown(p->fts_path, uid, p->fts_number ? cacheGid : uid) != 0) { |
| PLOG(WARNING) << "Failed to lchown " << p->fts_path; |
| } |
| } else { |
| LOG(WARNING) << "Ignoring " << p->fts_path << " with unexpected UID " |
| << p->fts_statp->st_uid << " instead of " << previousUid; |
| } |
| break; |
| } |
| } |
| fts_close(fts); |
| return true; |
| } |
| |
| static void chown_app_profile_dir(const std::string &packageName, int32_t appId, int32_t userId) { |
| uid_t uid = multiuser_get_uid(userId, appId); |
| gid_t sharedGid = multiuser_get_shared_gid(userId, appId); |
| |
| const std::string profile_dir = |
| create_primary_current_profile_package_dir_path(userId, packageName); |
| char *argv[] = { (char*) profile_dir.c_str(), nullptr }; |
| if (FTS* fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr)) { |
| for (FTSENT* p; (p = fts_read(fts)) != nullptr;) { |
| switch (p->fts_info) { |
| case FTS_D: |
| case FTS_F: |
| case FTS_SL: |
| case FTS_SLNONE: |
| if (lchown(p->fts_path, uid, uid) != 0) { |
| PLOG(WARNING) << "Failed to lchown " << p->fts_path; |
| } |
| break; |
| } |
| } |
| fts_close(fts); |
| } |
| |
| const std::string ref_profile_path = |
| create_primary_reference_profile_package_dir_path(packageName); |
| argv[0] = (char *) ref_profile_path.c_str(); |
| if (FTS* fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr)) { |
| for (FTSENT* p; (p = fts_read(fts)) != nullptr;) { |
| if (p->fts_info == FTS_D && p->fts_level == 0) { |
| if (chown(p->fts_path, AID_SYSTEM, sharedGid) != 0) { |
| PLOG(WARNING) << "Failed to chown " << p->fts_path; |
| } |
| continue; |
| } |
| switch (p->fts_info) { |
| case FTS_D: |
| case FTS_F: |
| case FTS_SL: |
| case FTS_SLNONE: |
| if (lchown(p->fts_path, sharedGid, sharedGid) != 0) { |
| PLOG(WARNING) << "Failed to lchown " << p->fts_path; |
| } |
| break; |
| } |
| } |
| fts_close(fts); |
| } |
| } |
| |
| static binder::Status createAppDataDirs(const std::string& path, int32_t uid, int32_t gid, |
| int32_t previousUid, int32_t cacheGid, |
| const std::string& seInfo, mode_t targetMode, |
| long projectIdApp, long projectIdCache) { |
| ScopedTrace tracer("create-dirs"); |
| struct stat st{}; |
| bool parent_dir_exists = (stat(path.c_str(), &st) == 0); |
| |
| auto cache_path = StringPrintf("%s/%s", path.c_str(), "cache"); |
| auto code_cache_path = StringPrintf("%s/%s", path.c_str(), "code_cache"); |
| bool cache_exists = (access(cache_path.c_str(), F_OK) == 0); |
| bool code_cache_exists = (access(code_cache_path.c_str(), F_OK) == 0); |
| |
| if (parent_dir_exists) { |
| if (previousUid > 0 && previousUid != uid) { |
| if (!chown_app_dir(path, uid, previousUid, cacheGid)) { |
| return error("Failed to chown " + path); |
| } |
| } |
| } |
| |
| // Prepare only the parent app directory |
| if (prepare_app_dir(path, targetMode, uid, gid, projectIdApp) || |
| prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid, projectIdCache) || |
| prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid, projectIdCache)) { |
| return error("Failed to prepare " + path); |
| } |
| |
| // Consider restorecon over contents if label changed |
| if (restorecon_app_data_lazy(path, seInfo, uid, parent_dir_exists)) { |
| return error("Failed to restorecon " + path); |
| } |
| |
| // If the parent dir exists, the restorecon would already have been done |
| // as a part of the recursive restorecon above |
| if (parent_dir_exists && !cache_exists |
| && restorecon_app_data_lazy(cache_path, seInfo, uid, false)) { |
| return error("Failed to restorecon " + cache_path); |
| } |
| |
| // If the parent dir exists, the restorecon would already have been done |
| // as a part of the recursive restorecon above |
| if (parent_dir_exists && !code_cache_exists |
| && restorecon_app_data_lazy(code_cache_path, seInfo, uid, false)) { |
| return error("Failed to restorecon " + code_cache_path); |
| } |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::createAppDataLocked( |
| const std::optional<std::string>& uuid, const std::string& packageName, int32_t userId, |
| int32_t flags, int32_t appId, int32_t previousAppId, const std::string& seInfo, |
| int32_t targetSdkVersion, int64_t* ceDataInode, int64_t* deDataInode) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| CHECK_ARGUMENT_UUID(uuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| const char* pkgname = packageName.c_str(); |
| |
| // Assume invalid inode unless filled in below |
| if (ceDataInode != nullptr) *ceDataInode = -1; |
| if (deDataInode != nullptr) *deDataInode = -1; |
| |
| int32_t uid = multiuser_get_uid(userId, appId); |
| |
| // If previousAppId > 0, an app is changing its app ID |
| int32_t previousUid = |
| previousAppId > 0 ? (int32_t)multiuser_get_uid(userId, previousAppId) : -1; |
| |
| 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; |
| } |
| |
| long projectIdApp = get_project_id(uid, PROJECT_ID_APP_START); |
| long projectIdCache = get_project_id(uid, PROJECT_ID_APP_CACHE_START); |
| |
| if (flags & FLAG_STORAGE_CE) { |
| ScopedTrace tracer("ce"); |
| auto path = create_data_user_ce_package_path(uuid_, userId, pkgname); |
| |
| auto status = createAppDataDirs(path, uid, uid, previousUid, cacheGid, seInfo, targetMode, |
| projectIdApp, projectIdCache); |
| if (!status.isOk()) { |
| return status; |
| } |
| |
| // 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 (ceDataInode != nullptr) { |
| ino_t result; |
| if (get_path_inode(path, &result) != 0) { |
| return error("Failed to get_path_inode for " + path); |
| } |
| *ceDataInode = static_cast<uint64_t>(result); |
| } |
| } |
| if (flags & FLAG_STORAGE_DE) { |
| ScopedTrace tracer("de"); |
| auto path = create_data_user_de_package_path(uuid_, userId, pkgname); |
| |
| auto status = createAppDataDirs(path, uid, uid, previousUid, cacheGid, seInfo, targetMode, |
| projectIdApp, projectIdCache); |
| if (!status.isOk()) { |
| return status; |
| } |
| if (previousUid > 0 && previousUid != uid) { |
| chown_app_profile_dir(packageName, appId, userId); |
| } |
| |
| if (!prepare_app_profile_dir(packageName, appId, userId)) { |
| return error("Failed to prepare profiles for " + packageName); |
| } |
| |
| if (deDataInode != nullptr) { |
| ino_t result; |
| if (get_path_inode(path, &result) != 0) { |
| return error("Failed to get_path_inode for " + path); |
| } |
| *deDataInode = static_cast<uint64_t>(result); |
| } |
| } |
| |
| if (flags & FLAG_STORAGE_SDK) { |
| ScopedTrace tracer("sdk"); |
| // Safe to ignore status since we can retry creating this by calling reconcileSdkData |
| auto ignore = createSdkSandboxDataPackageDirectory(uuid, packageName, userId, appId, flags); |
| if (!ignore.isOk()) { |
| PLOG(WARNING) << "Failed to create sdk data package directory for " << packageName; |
| } |
| } else { |
| ScopedTrace tracer("destroy-sdk"); |
| // Package does not need sdk storage. Remove it. |
| destroySdkSandboxDataPackageDirectory(uuid, packageName, userId, flags); |
| } |
| |
| return ok(); |
| } |
| |
| /** |
| * Responsible for creating /data/misc_{ce|de}/user/0/sdksandbox/<package-name> directory and other |
| * app level sub directories, such as ./shared |
| */ |
| binder::Status InstalldNativeService::createSdkSandboxDataPackageDirectory( |
| const std::optional<std::string>& uuid, const std::string& packageName, int32_t userId, |
| int32_t appId, int32_t flags) { |
| ENFORCE_VALID_USER(userId); |
| |
| int32_t sdkSandboxUid = multiuser_get_sdk_sandbox_uid(userId, appId); |
| if (sdkSandboxUid == -1) { |
| // There no valid sdk sandbox process for this app. Skip creation of data directory |
| return ok(); |
| } |
| |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| |
| constexpr int storageFlags[2] = {FLAG_STORAGE_CE, FLAG_STORAGE_DE}; |
| for (int currentFlag : storageFlags) { |
| if ((flags & currentFlag) == 0) { |
| continue; |
| } |
| bool isCeData = (currentFlag == FLAG_STORAGE_CE); |
| |
| // /data/misc_{ce,de}/<user-id>/sdksandbox directory gets created by vold |
| // during user creation |
| |
| // Prepare the package directory |
| auto packagePath = create_data_misc_sdk_sandbox_package_path(uuid_, isCeData, userId, |
| packageName.c_str()); |
| #if SDK_DEBUG |
| LOG(DEBUG) << "Creating app-level sdk data directory: " << packagePath; |
| #endif |
| |
| if (prepare_app_dir(packagePath, 0751, AID_SYSTEM, AID_SYSTEM, 0)) { |
| return error("Failed to prepare " + packagePath); |
| } |
| } |
| |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::createAppData( |
| const std::optional<std::string>& uuid, const std::string& packageName, int32_t userId, |
| int32_t flags, int32_t appId, int32_t previousAppId, const std::string& seInfo, |
| int32_t targetSdkVersion, int64_t* ceDataInode, int64_t* deDataInode) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| CHECK_ARGUMENT_UUID(uuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| LOCK_PACKAGE_USER(); |
| return createAppDataLocked(uuid, packageName, userId, flags, appId, previousAppId, seInfo, |
| targetSdkVersion, ceDataInode, deDataInode); |
| } |
| |
| binder::Status InstalldNativeService::createAppData( |
| const android::os::CreateAppDataArgs& args, |
| android::os::CreateAppDataResult* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(args.userId); |
| // Locking is performed depeer in the callstack. |
| |
| int64_t ceDataInode = -1; |
| int64_t deDataInode = -1; |
| auto status = createAppData(args.uuid, args.packageName, args.userId, args.flags, args.appId, |
| args.previousAppId, args.seInfo, args.targetSdkVersion, |
| &ceDataInode, &deDataInode); |
| _aidl_return->ceDataInode = ceDataInode; |
| _aidl_return->deDataInode = deDataInode; |
| _aidl_return->exceptionCode = status.exceptionCode(); |
| _aidl_return->exceptionMessage = status.exceptionMessage(); |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::createAppDataBatched( |
| const std::vector<android::os::CreateAppDataArgs>& args, |
| std::vector<android::os::CreateAppDataResult>* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| for (const auto& arg : args) { |
| ENFORCE_VALID_USER(arg.userId); |
| } |
| |
| // Locking is performed depeer in the callstack. |
| |
| std::vector<android::os::CreateAppDataResult> results; |
| for (const auto &arg : args) { |
| android::os::CreateAppDataResult result; |
| createAppData(arg, &result); |
| results.push_back(result); |
| } |
| *_aidl_return = results; |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::reconcileSdkData( |
| const android::os::ReconcileSdkDataArgs& args) { |
| ENFORCE_VALID_USER(args.userId); |
| // Locking is performed depeer in the callstack. |
| |
| return reconcileSdkData(args.uuid, args.packageName, args.subDirNames, args.userId, args.appId, |
| args.previousAppId, args.seInfo, args.flags); |
| } |
| |
| /** |
| * Reconciles per-sdk directory under app-level sdk data directory. |
| |
| * E.g. `/data/misc_ce/0/sdksandbox/<package-name>/<sdkPackageName>-<randomSuffix> |
| * |
| * - If the sdk data package directory is missing, we create it first. |
| * - If sdkPackageNames is empty, we delete sdk package directory since it's not needed anymore. |
| * - If a sdk level directory we need to prepare already exist, we skip creating it again. This |
| * is to avoid having same per-sdk directory with different suffix. |
| * - If a sdk level directory exist which is absent from sdkPackageNames, we remove it. |
| */ |
| binder::Status InstalldNativeService::reconcileSdkData(const std::optional<std::string>& uuid, |
| const std::string& packageName, |
| const std::vector<std::string>& subDirNames, |
| int userId, int appId, int previousAppId, |
| const std::string& seInfo, int flags) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| CHECK_ARGUMENT_UUID(uuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| LOCK_PACKAGE_USER(); |
| |
| #if SDK_DEBUG |
| LOG(DEBUG) << "Creating per sdk data directory for: " << packageName; |
| #endif |
| |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| |
| // Prepare the sdk package directory in case it's missing |
| const auto status = |
| createSdkSandboxDataPackageDirectory(uuid, packageName, userId, appId, flags); |
| if (!status.isOk()) { |
| return status; |
| } |
| |
| auto res = ok(); |
| // We have to create sdk data for CE and DE storage |
| const int storageFlags[2] = {FLAG_STORAGE_CE, FLAG_STORAGE_DE}; |
| for (int currentFlag : storageFlags) { |
| if ((flags & currentFlag) == 0) { |
| continue; |
| } |
| const bool isCeData = (currentFlag == FLAG_STORAGE_CE); |
| |
| const auto packagePath = create_data_misc_sdk_sandbox_package_path(uuid_, isCeData, userId, |
| packageName.c_str()); |
| |
| // Remove existing sub-directories not referred in subDirNames |
| const std::unordered_set<std::string> expectedSubDirNames(subDirNames.begin(), |
| subDirNames.end()); |
| const auto subDirHandler = [&packagePath, &expectedSubDirNames, |
| &res](const std::string& subDirName) { |
| // Remove the per-sdk directory if it is not referred in |
| // expectedSubDirNames |
| if (expectedSubDirNames.find(subDirName) == expectedSubDirNames.end()) { |
| auto path = packagePath + "/" + subDirName; |
| if (delete_dir_contents_and_dir(path) != 0) { |
| res = error("Failed to delete " + path); |
| return; |
| } |
| } |
| }; |
| const int ec = foreach_subdir(packagePath, subDirHandler); |
| if (ec != 0) { |
| res = error("Failed to process subdirs for " + packagePath); |
| continue; |
| } |
| |
| // Now create the subDirNames |
| for (const auto& subDirName : subDirNames) { |
| const std::string path = |
| create_data_misc_sdk_sandbox_sdk_path(uuid_, isCeData, userId, |
| packageName.c_str(), subDirName.c_str()); |
| |
| // Create the directory along with cache and code_cache |
| const int32_t cacheGid = multiuser_get_cache_gid(userId, appId); |
| if (cacheGid == -1) { |
| return exception(binder::Status::EX_ILLEGAL_STATE, |
| StringPrintf("cacheGid cannot be -1 for sdk data")); |
| } |
| const int32_t sandboxUid = multiuser_get_sdk_sandbox_uid(userId, appId); |
| int32_t previousSandboxUid = multiuser_get_sdk_sandbox_uid(userId, previousAppId); |
| int32_t appUid = multiuser_get_uid(userId, appId); |
| long projectIdApp = get_project_id(appUid, PROJECT_ID_APP_START); |
| long projectIdCache = get_project_id(appUid, PROJECT_ID_APP_CACHE_START); |
| auto status = |
| createAppDataDirs(path, sandboxUid, AID_NOBODY, previousSandboxUid, cacheGid, |
| seInfo, 0700 | S_ISGID, projectIdApp, projectIdCache); |
| if (!status.isOk()) { |
| res = status; |
| continue; |
| } |
| } |
| } |
| |
| return res; |
| } |
| |
| binder::Status InstalldNativeService::migrateAppData(const std::optional<std::string>& uuid, |
| const std::string& packageName, int32_t userId, int32_t flags) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| CHECK_ARGUMENT_UUID(uuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| LOCK_PACKAGE_USER(); |
| |
| 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); |
| CHECK_ARGUMENT_FILE_NAME(profileName); |
| if (!base::EndsWith(profileName, ".prof")) { |
| return exception(binder::Status::EX_ILLEGAL_ARGUMENT, |
| StringPrintf("Profile name %s does not end with .prof", |
| profileName.c_str())); |
| } |
| LOCK_PACKAGE(); |
| |
| 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::optional<std::string>& uuid, |
| const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| CHECK_ARGUMENT_UUID(uuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| LOCK_PACKAGE_USER(); |
| |
| 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; |
| if (flags & FLAG_CLEAR_CACHE_ONLY) { |
| suffix = CACHE_DIR_POSTFIX; |
| } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { |
| suffix = CODE_CACHE_DIR_POSTFIX; |
| } |
| |
| 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 (android::base::GetBoolProperty(kFuseProp, false)) { |
| std::regex re("^\\/mnt\\/pass_through\\/[0-9]+\\/emulated"); |
| if (std::regex_match(extPath, re)) { |
| extPath += "/" + std::to_string(userId); |
| } |
| } else { |
| 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); |
| } |
| // Note that we explicitly don't delete OBBs - those are only removed on |
| // app uninstall. |
| } |
| } |
| } |
| auto status = clearSdkSandboxDataPackageDirectory(uuid, packageName, userId, flags); |
| if (!status.isOk()) { |
| res = status; |
| } |
| return res; |
| } |
| |
| binder::Status InstalldNativeService::clearSdkSandboxDataPackageDirectory( |
| const std::optional<std::string>& uuid, const std::string& packageName, int32_t userId, |
| int32_t flags) { |
| ENFORCE_VALID_USER(userId); |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| const char* pkgname = packageName.c_str(); |
| |
| binder::Status res = ok(); |
| constexpr int storageFlags[2] = {FLAG_STORAGE_CE, FLAG_STORAGE_DE}; |
| for (int i = 0; i < 2; i++) { |
| int currentFlag = storageFlags[i]; |
| if ((flags & currentFlag) == 0) { |
| continue; |
| } |
| bool isCeData = (currentFlag == FLAG_STORAGE_CE); |
| std::string suffix; |
| if (flags & FLAG_CLEAR_CACHE_ONLY) { |
| suffix = CACHE_DIR_POSTFIX; |
| } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { |
| suffix = CODE_CACHE_DIR_POSTFIX; |
| } |
| |
| auto appPath = create_data_misc_sdk_sandbox_package_path(uuid_, isCeData, userId, pkgname); |
| if (access(appPath.c_str(), F_OK) != 0) continue; |
| const auto subDirHandler = [&appPath, &res, &suffix](const std::string& filename) { |
| auto filepath = appPath + "/" + filename + suffix; |
| if (delete_dir_contents(filepath, true) != 0) { |
| res = error("Failed to clear contents of " + filepath); |
| } |
| }; |
| const int ec = foreach_subdir(appPath, subDirHandler); |
| if (ec != 0) { |
| res = error("Failed to process subdirs for " + appPath); |
| } |
| } |
| 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); |
| LOCK_PACKAGE(); |
| |
| 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::deleteReferenceProfile(const std::string& packageName, |
| const std::string& profileName) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| LOCK_PACKAGE(); |
| |
| // This function only supports primary dex'es. |
| std::string path = |
| create_reference_profile_path(packageName, profileName, /*is_secondary_dex=*/false); |
| if (unlink(path.c_str()) != 0) { |
| if (errno == ENOENT) { |
| return ok(); |
| } else { |
| return error("Failed to delete profile " + profileName + " for " + packageName); |
| } |
| } |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::destroyAppData(const std::optional<std::string>& uuid, |
| const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| CHECK_ARGUMENT_UUID(uuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| LOCK_PACKAGE_USER(); |
| |
| 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 (rename_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 (rename_delete_dir_contents_and_dir(path) != 0) { |
| res = error("Failed to delete " + path); |
| } |
| if ((flags & FLAG_CLEAR_APP_DATA_KEEP_ART_PROFILES) == 0) { |
| 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 (android::base::GetBoolProperty(kFuseProp, false)) { |
| std::regex re("^\\/mnt\\/pass_through\\/[0-9]+\\/emulated"); |
| if (std::regex_match(extPath, re)) { |
| extPath += "/" + std::to_string(userId); |
| } |
| } else { |
| 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); |
| } |
| } |
| } |
| auto status = destroySdkSandboxDataPackageDirectory(uuid, packageName, userId, flags); |
| if (!status.isOk()) { |
| res = status; |
| } |
| return res; |
| } |
| |
| binder::Status InstalldNativeService::destroySdkSandboxDataPackageDirectory( |
| const std::optional<std::string>& uuid, const std::string& packageName, int32_t userId, |
| int32_t flags) { |
| ENFORCE_VALID_USER(userId); |
| |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| const char* pkgname = packageName.c_str(); |
| |
| binder::Status res = ok(); |
| constexpr int storageFlags[2] = {FLAG_STORAGE_CE, FLAG_STORAGE_DE}; |
| for (int i = 0; i < 2; i++) { |
| int currentFlag = storageFlags[i]; |
| if ((flags & currentFlag) == 0) { |
| continue; |
| } |
| bool isCeData = (currentFlag == FLAG_STORAGE_CE); |
| auto appPath = create_data_misc_sdk_sandbox_package_path(uuid_, isCeData, userId, pkgname); |
| if (rename_delete_dir_contents_and_dir(appPath) != 0) { |
| res = error("Failed to delete " + appPath); |
| } |
| } |
| 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::optional<std::string>& uuid, |
| int32_t flags) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| for (auto userId : get_known_users(uuid_)) { |
| LOCK_USER(); |
| atrace_pm_begin("fixup user"); |
| FTS* fts; |
| FTSENT* p; |
| auto ce_path = create_data_user_ce_path(uuid_, userId); |
| auto de_path = create_data_user_de_path(uuid_, userId); |
| 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_pm_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*)"--preserve=mode,ownership,timestamps,xattr", /* preserve properties */ |
| (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 logwrap_fork_execvp(ARRAY_SIZE(argv), argv, nullptr, false, LOG_ALOG, false, nullptr); |
| } |
| |
| binder::Status InstalldNativeService::snapshotAppData(const std::optional<std::string>& volumeUuid, |
| const std::string& packageName, |
| int32_t userId, int32_t snapshotId, |
| int32_t storageFlags, int64_t* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| CHECK_ARGUMENT_UUID_IS_TEST_OR_NULL(volumeUuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| LOCK_PACKAGE_USER(); |
| |
| 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, &userId, &package_name, |
| &snapshotId] { |
| if (clear_de_on_exit) { |
| auto to = create_data_misc_de_rollback_package_path(volume_uuid, userId, 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, userId, 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); |
| |
| if (storageFlags & FLAG_STORAGE_DE) { |
| auto from = create_data_user_de_package_path(volume_uuid, userId, package_name); |
| auto to = create_data_misc_de_rollback_path(volume_uuid, userId, snapshotId); |
| auto rollback_package_path = |
| create_data_misc_de_rollback_package_path(volume_uuid, userId, 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); |
| } |
| |
| // Check if we have data to copy. |
| if (access(from.c_str(), F_OK) == 0) { |
| 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; |
| } |
| } |
| |
| // 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, userId, 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, userId, 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, userId, 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_CE) { |
| auto from = create_data_user_ce_package_path(volume_uuid, userId, package_name); |
| auto to = create_data_misc_ce_rollback_path(volume_uuid, userId, snapshotId); |
| auto rollback_package_path = |
| create_data_misc_ce_rollback_package_path(volume_uuid, userId, 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, userId, 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::optional<std::string>& volumeUuid, const std::string& packageName, |
| const int32_t appId, const std::string& seInfo, const int32_t userId, |
| const int32_t snapshotId, int32_t storageFlags) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| CHECK_ARGUMENT_UUID_IS_TEST_OR_NULL(volumeUuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| LOCK_PACKAGE_USER(); |
| |
| 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, userId, snapshotId, |
| package_name); |
| auto from_de = create_data_misc_de_rollback_package_path(volume_uuid, userId, 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, userId, storageFlags, 0 /* ceDataInode */); |
| if (!res.isOk()) { |
| return res; |
| } |
| |
| if (needs_ce_rollback) { |
| auto to_ce = create_data_user_ce_path(volume_uuid, userId); |
| 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; |
| } |
| delete_dir_contents_and_dir(from_ce, true /* ignore_if_missing */); |
| } |
| |
| if (needs_de_rollback) { |
| auto to_de = create_data_user_de_path(volume_uuid, userId); |
| 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, userId, 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; |
| } |
| delete_dir_contents_and_dir(from_de, true /* ignore_if_missing */); |
| } |
| |
| // Finally, restore the SELinux label on the app data. |
| return restoreconAppData(volumeUuid, packageName, userId, storageFlags, appId, seInfo); |
| } |
| |
| binder::Status InstalldNativeService::destroyAppDataSnapshot( |
| const std::optional<std::string>& volumeUuid, const std::string& packageName, |
| const int32_t userId, const int64_t ceSnapshotInode, const int32_t snapshotId, |
| int32_t storageFlags) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| CHECK_ARGUMENT_UUID_IS_TEST_OR_NULL(volumeUuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| LOCK_PACKAGE_USER(); |
| |
| 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, userId, |
| 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, userId, 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::destroyCeSnapshotsNotSpecified( |
| const std::optional<std::string>& volumeUuid, const int32_t userId, |
| const std::vector<int32_t>& retainSnapshotIds) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| CHECK_ARGUMENT_UUID_IS_TEST_OR_NULL(volumeUuid); |
| LOCK_USER(); |
| |
| const char* volume_uuid = volumeUuid ? volumeUuid->c_str() : nullptr; |
| |
| auto base_path = create_data_misc_ce_rollback_base_path(volume_uuid, userId); |
| |
| std::unique_ptr<DIR, decltype(&closedir)> dir(opendir(base_path.c_str()), closedir); |
| if (!dir) { |
| return error(-1, "Failed to open rollback base dir " + base_path); |
| } |
| |
| struct dirent* ent; |
| while ((ent = readdir(dir.get()))) { |
| if (ent->d_type != DT_DIR) { |
| continue; |
| } |
| |
| uint snapshot_id; |
| bool parse_ok = ParseUint(ent->d_name, &snapshot_id); |
| if (parse_ok && |
| std::find(retainSnapshotIds.begin(), retainSnapshotIds.end(), |
| snapshot_id) == retainSnapshotIds.end()) { |
| auto rollback_path = |
| create_data_misc_ce_rollback_path(volume_uuid, userId, snapshot_id); |
| int res = delete_dir_contents_and_dir(rollback_path, true /* ignore_if_missing */); |
| if (res != 0) { |
| return error(res, "Failed clearing snapshot " + rollback_path); |
| } |
| } |
| } |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::moveCompleteApp(const std::optional<std::string>& fromUuid, |
| const std::optional<std::string>& toUuid, const std::string& packageName, |
| int32_t appId, const std::string& seInfo, |
| int32_t targetSdkVersion, const std::string& fromCodePath) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(fromUuid); |
| CHECK_ARGUMENT_UUID(toUuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| LOCK_PACKAGE(); |
| |
| 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(); |
| |
| binder::Status res = ok(); |
| std::vector<userid_t> users = get_known_users(from_uuid); |
| |
| auto to_app_package_path_parent = create_data_app_path(to_uuid); |
| auto to_app_package_path = StringPrintf("%s/%s", to_app_package_path_parent.c_str(), |
| android::base::Basename(fromCodePath).c_str()); |
| |
| // Copy app |
| { |
| int rc = copy_directory_recursive(fromCodePath.c_str(), to_app_package_path_parent.c_str()); |
| if (rc != 0) { |
| res = error(rc, "Failed copying " + fromCodePath + " to " + to_app_package_path); |
| goto fail; |
| } |
| |
| if (selinux_android_restorecon(to_app_package_path.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) { |
| res = error("Failed to restorecon " + to_app_package_path); |
| goto fail; |
| } |
| } |
| |
| // Copy private data for all known users |
| for (auto userId : users) { |
| LOCK_USER(); |
| |
| // Data source may not exist for all users; that's okay |
| auto from_ce = create_data_user_ce_package_path(from_uuid, userId, package_name); |
| if (access(from_ce.c_str(), F_OK) != 0) { |
| LOG(INFO) << "Missing source " << from_ce; |
| continue; |
| } |
| |
| if (!createAppDataLocked(toUuid, packageName, userId, FLAG_STORAGE_CE | FLAG_STORAGE_DE, |
| appId, /* previousAppId */ -1, seInfo, targetSdkVersion, nullptr, |
| nullptr) |
| .isOk()) { |
| res = error("Failed to create package target"); |
| goto fail; |
| } |
| { |
| auto from = create_data_user_de_package_path(from_uuid, userId, package_name); |
| auto to = create_data_user_de_path(to_uuid, userId); |
| |
| 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, userId, package_name); |
| auto to = create_data_user_ce_path(to_uuid, userId); |
| |
| 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 (!restoreconAppDataLocked(toUuid, packageName, userId, FLAG_STORAGE_CE | FLAG_STORAGE_DE, |
| appId, seInfo) |
| .isOk()) { |
| res = error("Failed to restorecon"); |
| goto fail; |
| } |
| } |
| |
| // Copy sdk data for all known users |
| for (auto userId : users) { |
| LOCK_USER(); |
| |
| constexpr int storageFlags[2] = {FLAG_STORAGE_CE, FLAG_STORAGE_DE}; |
| for (int currentFlag : storageFlags) { |
| const bool isCeData = currentFlag == FLAG_STORAGE_CE; |
| |
| const auto from = create_data_misc_sdk_sandbox_package_path(from_uuid, isCeData, userId, |
| package_name); |
| if (access(from.c_str(), F_OK) != 0) { |
| LOG(INFO) << "Missing source " << from; |
| continue; |
| } |
| const auto to = create_data_misc_sdk_sandbox_path(to_uuid, isCeData, userId); |
| |
| const 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 (!restoreconSdkDataLocked(toUuid, packageName, userId, 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 |
| { |
| if (delete_dir_contents(to_app_package_path.c_str(), 1, nullptr) != 0) { |
| LOG(WARNING) << "Failed to rollback " << to_app_package_path; |
| } |
| } |
| for (auto userId : users) { |
| LOCK_USER(); |
| { |
| auto to = create_data_user_de_package_path(to_uuid, userId, 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, userId, package_name); |
| if (delete_dir_contents(to.c_str(), 1, nullptr) != 0) { |
| LOG(WARNING) << "Failed to rollback " << to; |
| } |
| } |
| } |
| for (auto userId : users) { |
| LOCK_USER(); |
| constexpr int storageFlags[2] = {FLAG_STORAGE_CE, FLAG_STORAGE_DE}; |
| for (int currentFlag : storageFlags) { |
| const bool isCeData = currentFlag == FLAG_STORAGE_CE; |
| const auto to = create_data_misc_sdk_sandbox_package_path(to_uuid, isCeData, userId, |
| 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::optional<std::string>& uuid, |
| int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| CHECK_ARGUMENT_UUID(uuid); |
| LOCK_USER(); |
| |
| ScopedTrace tracer("create-user-data"); |
| |
| 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::optional<std::string>& uuid, |
| int32_t userId, int32_t flags) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| CHECK_ARGUMENT_UUID(uuid); |
| LOCK_USER(); |
| |
| 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); |
| // Contents only, as vold is responsible for the user_de dir itself. |
| if (delete_dir_contents(path, true) != 0) { |
| res = error("Failed to delete contents of " + path); |
| } |
| auto sdk_sandbox_de_path = |
| create_data_misc_sdk_sandbox_path(uuid_, /*isCeData=*/false, userId); |
| if (delete_dir_contents_and_dir(sdk_sandbox_de_path, true) != 0) { |
| res = error("Failed to delete " + sdk_sandbox_de_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); |
| // Contents only, as vold is responsible for the user_ce dir itself. |
| if (delete_dir_contents(path, true) != 0) { |
| res = error("Failed to delete contents of " + path); |
| } |
| auto sdk_sandbox_ce_path = |
| create_data_misc_sdk_sandbox_path(uuid_, /*isCeData=*/true, userId); |
| if (delete_dir_contents_and_dir(sdk_sandbox_ce_path, true) != 0) { |
| res = error("Failed to delete " + sdk_sandbox_ce_path); |
| } |
| path = findDataMediaPath(uuid, userId); |
| // Contents only, as vold is responsible for the media dir itself. |
| if (delete_dir_contents(path, true) != 0) { |
| res = error("Failed to delete contents of " + path); |
| } |
| } |
| return res; |
| } |
| |
| binder::Status InstalldNativeService::freeCache(const std::optional<std::string>& uuid, |
| int64_t targetFreeBytes, int32_t flags) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| #ifndef GRANULAR_LOCKS |
| std::lock_guard lock(mLock); |
| #endif // !GRANULAR_LOCKS |
| |
| auto uuidString = uuid.value_or(""); |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| auto data_path = create_data_path(uuid_); |
| auto noop = (flags & FLAG_FREE_CACHE_NOOP); |
| auto defy_target = (flags & FLAG_FREE_CACHE_DEFY_TARGET_FREE_BYTES); |
| |
| int64_t free = data_disk_free(data_path); |
| if (free < 0) { |
| return error("Failed to determine free space for " + data_path); |
| } |
| |
| int64_t needed = targetFreeBytes - free; |
| if (!defy_target) { |
| 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_pm_begin("create"); |
| const auto users = get_known_users(uuid_); |
| #ifdef GRANULAR_LOCKS |
| std::vector<UserLock> userLocks; |
| userLocks.reserve(users.size()); |
| std::vector<UserWriteLockGuard> lockGuards; |
| lockGuards.reserve(users.size()); |
| #endif // GRANULAR_LOCKS |
| std::unordered_map<uid_t, std::shared_ptr<CacheTracker>> trackers; |
| for (auto userId : users) { |
| #ifdef GRANULAR_LOCKS |
| userLocks.emplace_back(userId, mUserIdLock, mLock); |
| lockGuards.emplace_back(userLocks.back()); |
| #endif // GRANULAR_LOCKS |
| FTS *fts; |
| FTSENT *p; |
| |
| // Create a list of data paths whose children have cache directories |
| auto ce_path = create_data_user_ce_path(uuid_, userId); |
| auto de_path = create_data_user_de_path(uuid_, userId); |
| auto media_path = findDataMediaPath(uuid, userId) + "/Android/data/"; |
| auto ce_sdk_path = create_data_misc_sdk_sandbox_path(uuid_, /*isCeData=*/true, userId); |
| auto de_sdk_path = create_data_misc_sdk_sandbox_path(uuid_, /*isCeData=*/false, userId); |
| |
| std::vector<std::string> dataPaths = {ce_path, de_path, media_path}; |
| foreach_subdir(ce_sdk_path, [&ce_sdk_path, &dataPaths](const std::string subDir) { |
| const auto fullpath = ce_sdk_path + "/" + subDir; |
| dataPaths.push_back(fullpath); |
| }); |
| foreach_subdir(de_sdk_path, [&de_sdk_path, &dataPaths](const std::string subDir) { |
| const auto fullpath = de_sdk_path + "/" + subDir; |
| dataPaths.push_back((char*)fullpath.c_str()); |
| }); |
| |
| char* argv[dataPaths.size() + 1]; |
| for (unsigned int i = 0; i < dataPaths.size(); i++) { |
| argv[i] = (char*)dataPaths[i].c_str(); |
| } |
| argv[dataPaths.size()] = 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 uid belongs to sdk sandbox, then the cache should be attributed to the |
| // original client app. |
| const auto client_uid = multiuser_convert_sdk_sandbox_to_app_uid(uid); |
| const bool isSandboxUid = (client_uid != (uid_t)-1); |
| if (isSandboxUid) uid = client_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_pm_end(); |
| |
| // 2. Populate tracker stats and insert into priority queue |
| atrace_pm_begin("populate"); |
| 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); |
| } |
| atrace_pm_end(); |
| |
| // 3. Bounce across the queue, freeing items from whichever tracker is |
| // the most over their assigned quota |
| atrace_pm_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; |
| } |
| |
| // 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; |
| } |
| |
| if (!defy_target) { |
| // 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_pm_end(); |
| |
| } else { |
| return error("Legacy cache logic no longer supported"); |
| } |
| |
| if (!defy_target) { |
| 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)); |
| } |
| } else { |
| return ok(); |
| } |
| } |
| |
| binder::Status InstalldNativeService::rmdex(const std::string& codePath, |
| const std::string& instructionSet) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PATH(codePath); |
| |
| 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 |
| |
| // On devices without sdcardfs, if internal and external are on |
| // the same volume, a uid such as u0_a123 is used for both |
| // internal and external storage; therefore, subtract that |
| // amount from internal to make sure we don't count it double. |
| // This needs to happen for data, cache and OBB |
| static void deductDoubleSpaceIfNeeded(stats* stats, int64_t doubleSpaceToBeDeleted, uid_t uid, |
| const std::string& uuid) { |
| if (!supports_sdcardfs()) { |
| stats->dataSize -= doubleSpaceToBeDeleted; |
| long obbProjectId = get_project_id(uid, PROJECT_ID_EXT_OBB_START); |
| int64_t appObbSize = GetOccupiedSpaceForProjectId(uuid, obbProjectId); |
| stats->dataSize -= appObbSize; |
| } |
| } |
| |
| static void collectQuotaStats(const std::string& uuid, int32_t userId, |
| int32_t appId, struct stats* stats, struct stats* extStats) { |
| int64_t space, doubleSpaceToBeDeleted = 0; |
| uid_t uid = multiuser_get_uid(userId, appId); |
| static const bool supportsProjectId = internal_storage_has_project_id(); |
| |
| if (extStats != nullptr) { |
| space = get_occupied_app_space_external(uuid, userId, appId); |
| |
| if (space != -1) { |
| extStats->dataSize += space; |
| doubleSpaceToBeDeleted += space; |
| } |
| |
| space = get_occupied_app_cache_space_external(uuid, userId, appId); |
| if (space != -1) { |
| extStats->dataSize += space; // cache counts for "data" |
| extStats->cacheSize += space; |
| doubleSpaceToBeDeleted += space; |
| } |
| } |
| |
| if (stats != nullptr) { |
| if (!supportsProjectId) { |
| if ((space = GetOccupiedSpaceForUid(uuid, uid)) != -1) { |
| stats->dataSize += space; |
| } |
| deductDoubleSpaceIfNeeded(stats, doubleSpaceToBeDeleted, uid, uuid); |
| int sdkSandboxUid = multiuser_get_sdk_sandbox_uid(userId, appId); |
| if (sdkSandboxUid != -1) { |
| if ((space = GetOccupiedSpaceForUid(uuid, sdkSandboxUid)) != -1) { |
| stats->dataSize += space; |
| } |
| } |
| int cacheGid = multiuser_get_cache_gid(userId, appId); |
| if (cacheGid != -1) { |
| if ((space = GetOccupiedSpaceForGid(uuid, cacheGid)) != -1) { |
| stats->cacheSize += space; |
| } |
| } |
| } else { |
| long projectId = get_project_id(uid, PROJECT_ID_APP_START); |
| if ((space = GetOccupiedSpaceForProjectId(uuid, projectId)) != -1) { |
| stats->dataSize += space; |
| } |
| projectId = get_project_id(uid, PROJECT_ID_APP_CACHE_START); |
| if ((space = GetOccupiedSpaceForProjectId(uuid, projectId)) != -1) { |
| stats->cacheSize += space; |
| stats->dataSize += space; |
| } |
| } |
| |
| int sharedGid = multiuser_get_shared_gid(0, appId); |
| if (sharedGid != -1) { |
| if ((space = GetOccupiedSpaceForGid(uuid, sharedGid)) != -1) { |
| stats->codeSize += 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); |
| } |
| |
| void collectManualStatsForSubDirectories(const std::string& path, struct stats* stats) { |
| const auto subDirHandler = [&path, &stats](const std::string& subDir) { |
| auto fullpath = path + "/" + subDir; |
| collectManualStats(fullpath, stats); |
| }; |
| foreach_subdir(path, subDirHandler); |
| } |
| |
| static void collectManualStatsForUser(const std::string& path, struct stats* stats, |
| bool exclude_apps = false, |
| bool is_sdk_sandbox_storage = 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 if (is_sdk_sandbox_storage) { |
| // In case of sdk sandbox storage (e.g. /data/misc_ce/0/sdksandbox/<package-name>), |
| // collect individual stats of each subdirectory (shared, storage of each sdk etc.) |
| collectManualStatsForSubDirectories(StringPrintf("%s/%s", path.c_str(), name), |
| stats); |
| } 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 == 3 |
| && !strcmp(p->fts_parent->fts_name, "obb") |
| && !strcmp(p->fts_parent->fts_parent->fts_name, "Android")) { |
| p->fts_number = 1; |
| } else 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 = 2; |
| } |
| [[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->codeSize += size; |
| } else { |
| if (p->fts_number == 2) { |
| stats->cacheSize += size; |
| } |
| stats->dataSize += size; |
| } |
| break; |
| } |
| } |
| fts_close(fts); |
| } |
| static bool ownsExternalStorage(int32_t appId) { |
| // if project id calculation is supported then, there is no need to |
| // calculate in a different way and project_id based calculation can work |
| if (internal_storage_has_project_id()) { |
| return false; |
| } |
| |
| // Fetch external storage owner appid and check if it is the same as the |
| // current appId whose size is calculated |
| struct stat s; |
| auto _picDir = StringPrintf("%s/Pictures", create_data_media_path(nullptr, 0).c_str()); |
| // check if the stat are present |
| if (stat(_picDir.c_str(), &s) == 0) { |
| // fetch the appId from the uid of the media app |
| return ((int32_t)multiuser_get_app_id(s.st_uid) == appId); |
| } |
| return false; |
| } |
| binder::Status InstalldNativeService::getAppSize(const std::optional<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); |
| if (packageNames.size() != ceDataInodes.size()) { |
| return exception(binder::Status::EX_ILLEGAL_ARGUMENT, |
| "packageNames/ceDataInodes size mismatch."); |
| } |
| 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.value_or(""); |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| |
| if (!IsQuotaSupported(uuidString)) { |
| flags &= ~FLAG_USE_QUOTA; |
| } |
| |
| atrace_pm_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_pm_end(); |
| // Calculating the app size of the external storage owning app in a manual way, since |
| // calculating it through quota apis also includes external media storage in the app storage |
| // numbers |
| if (flags & FLAG_USE_QUOTA && appId >= AID_APP_START && !ownsExternalStorage(appId)) { |
| atrace_pm_begin("code"); |
| for (const auto& codePath : codePaths) { |
| calculate_tree_size(codePath, &stats.codeSize, -1, |
| multiuser_get_shared_gid(0, appId)); |
| } |
| atrace_pm_end(); |
| |
| atrace_pm_begin("quota"); |
| collectQuotaStats(uuidString, userId, appId, &stats, &extStats); |
| atrace_pm_end(); |
| } else { |
| atrace_pm_begin("code"); |
| for (const auto& codePath : codePaths) { |
| calculate_tree_size(codePath, &stats.codeSize); |
| } |
| atrace_pm_end(); |
| |
| for (size_t i = 0; i < packageNames.size(); i++) { |
| const char* pkgname = packageNames[i].c_str(); |
| |
| atrace_pm_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_pm_end(); |
| |
| // In case of sdk sandbox storage (e.g. /data/misc_ce/0/sdksandbox/<package-name>), |
| // collect individual stats of each subdirectory (shared, storage of each sdk etc.) |
| if (appId >= AID_APP_START && appId <= AID_APP_END) { |
| atrace_pm_begin("sdksandbox"); |
| auto sdkSandboxCePath = |
| create_data_misc_sdk_sandbox_package_path(uuid_, true, userId, pkgname); |
| collectManualStatsForSubDirectories(sdkSandboxCePath, &stats); |
| auto sdkSandboxDePath = |
| create_data_misc_sdk_sandbox_package_path(uuid_, false, userId, pkgname); |
| collectManualStatsForSubDirectories(sdkSandboxDePath, &stats); |
| atrace_pm_end(); |
| } |
| |
| if (!uuid) { |
| atrace_pm_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_pm_end(); |
| } |
| |
| atrace_pm_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_pm_end(); |
| } |
| |
| if (!uuid) { |
| atrace_pm_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_pm_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(); |
| } |
| |
| struct external_sizes { |
| int64_t audioSize; |
| int64_t videoSize; |
| int64_t imageSize; |
| int64_t totalSize; // excludes OBBs (Android/obb), but includes app data + cache |
| int64_t obbSize; |
| }; |
| |
| #define PER_USER_RANGE 100000 |
| |
| static long getProjectIdForUser(int userId, long projectId) { |
| return userId * PER_USER_RANGE + projectId; |
| } |
| |
| static external_sizes getExternalSizesForUserWithQuota(const std::string& uuid, int32_t userId, const std::vector<int32_t>& appIds) { |
| struct external_sizes sizes = {}; |
| int64_t space; |
| |
| if (supports_sdcardfs()) { |
| uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); |
| if ((space = GetOccupiedSpaceForUid(uuid, uid)) != -1) { |
| sizes.totalSize = space; |
| } |
| |
| gid_t audioGid = multiuser_get_uid(userId, AID_MEDIA_AUDIO); |
| if ((space = GetOccupiedSpaceForGid(uuid, audioGid)) != -1) { |
| sizes.audioSize = space; |
| } |
| |
| gid_t videoGid = multiuser_get_uid(userId, AID_MEDIA_VIDEO); |
| if ((space = GetOccupiedSpaceForGid(uuid, videoGid)) != -1) { |
| sizes.videoSize = space; |
| } |
| |
| gid_t imageGid = multiuser_get_uid(userId, AID_MEDIA_IMAGE); |
| if ((space = GetOccupiedSpaceForGid(uuid, imageGid)) != -1) { |
| sizes.imageSize = space; |
| } |
| |
| if ((space = GetOccupiedSpaceForGid(uuid, AID_MEDIA_OBB)) != -1) { |
| sizes.obbSize = space; |
| } |
| } else { |
| int64_t totalSize = 0; |
| long defaultProjectId = getProjectIdForUser(userId, PROJECT_ID_EXT_DEFAULT); |
| if ((space = GetOccupiedSpaceForProjectId(uuid, defaultProjectId)) != -1) { |
| // This is all files that are not audio/video/images, excluding |
| // OBBs and app-private data |
| totalSize += space; |
| } |
| |
| long audioProjectId = getProjectIdForUser(userId, PROJECT_ID_EXT_MEDIA_AUDIO); |
| if ((space = GetOccupiedSpaceForProjectId(uuid, audioProjectId)) != -1) { |
| sizes.audioSize = space; |
| totalSize += space; |
| } |
| |
| long videoProjectId = getProjectIdForUser(userId, PROJECT_ID_EXT_MEDIA_VIDEO); |
| if ((space = GetOccupiedSpaceForProjectId(uuid, videoProjectId)) != -1) { |
| sizes.videoSize = space; |
| totalSize += space; |
| } |
| |
| long imageProjectId = getProjectIdForUser(userId, PROJECT_ID_EXT_MEDIA_IMAGE); |
| if ((space = GetOccupiedSpaceForProjectId(uuid, imageProjectId)) != -1) { |
| sizes.imageSize = space; |
| totalSize += space; |
| } |
| |
| int64_t totalAppDataSize = 0; |
| int64_t totalAppCacheSize = 0; |
| int64_t totalAppObbSize = 0; |
| for (auto appId : appIds) { |
| if (appId >= AID_APP_START) { |
| // App data |
| uid_t uid = multiuser_get_uid(userId, appId); |
| long projectId = uid - AID_APP_START + PROJECT_ID_EXT_DATA_START; |
| totalAppDataSize += GetOccupiedSpaceForProjectId(uuid, projectId); |
| |
| // App cache |
| long cacheProjectId = uid - AID_APP_START + PROJECT_ID_EXT_CACHE_START; |
| totalAppCacheSize += GetOccupiedSpaceForProjectId(uuid, cacheProjectId); |
| |
| // App OBBs |
| long obbProjectId = uid - AID_APP_START + PROJECT_ID_EXT_OBB_START; |
| totalAppObbSize += GetOccupiedSpaceForProjectId(uuid, obbProjectId); |
| } |
| } |
| // Total size should include app data + cache |
| totalSize += totalAppDataSize; |
| totalSize += totalAppCacheSize; |
| sizes.totalSize = totalSize; |
| |
| // Only OBB is separate |
| sizes.obbSize = totalAppObbSize; |
| } |
| |
| return sizes; |
| } |
| |
| binder::Status InstalldNativeService::getUserSize(const std::optional<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); |
| ENFORCE_VALID_USER(userId); |
| 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.value_or(""); |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| |
| if (!IsQuotaSupported(uuidString)) { |
| flags &= ~FLAG_USE_QUOTA; |
| } |
| |
| if (flags & FLAG_USE_QUOTA) { |
| atrace_pm_begin("code"); |
| calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize, -1, -1, true); |
| atrace_pm_end(); |
| |
| atrace_pm_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_pm_end(); |
| |
| if (!uuid) { |
| atrace_pm_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_pm_end(); |
| } |
| |
| atrace_pm_begin("external"); |
| auto sizes = getExternalSizesForUserWithQuota(uuidString, userId, appIds); |
| extStats.dataSize += sizes.totalSize; |
| extStats.codeSize += sizes.obbSize; |
| atrace_pm_end(); |
| |
| if (!uuid) { |
| atrace_pm_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_pm_end(); |
| } |
| atrace_pm_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_pm_end(); |
| } else { |
| atrace_pm_begin("code"); |
| calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize); |
| atrace_pm_end(); |
| |
| atrace_pm_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_pm_end(); |
| |
| atrace_pm_begin("sdksandbox"); |
| auto sdkSandboxCePath = create_data_misc_sdk_sandbox_path(uuid_, true, userId); |
| collectManualStatsForUser(sdkSandboxCePath, &stats, false, true); |
| auto sdkSandboxDePath = create_data_misc_sdk_sandbox_path(uuid_, false, userId); |
| collectManualStatsForUser(sdkSandboxDePath, &stats, false, true); |
| atrace_pm_end(); |
| |
| if (!uuid) { |
| atrace_pm_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_pm_end(); |
| } |
| |
| atrace_pm_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 << " code " << extStats.codeSize; |
| #endif |
| atrace_pm_end(); |
| |
| if (!uuid) { |
| atrace_pm_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_pm_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::optional<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); |
| ENFORCE_VALID_USER(userId); |
| 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.value_or(""); |
| 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) { |
| atrace_pm_begin("quota"); |
| auto sizes = getExternalSizesForUserWithQuota(uuidString, userId, appIds); |
| totalSize = sizes.totalSize; |
| audioSize = sizes.audioSize; |
| videoSize = sizes.videoSize; |
| imageSize = sizes.imageSize; |
| obbSize = sizes.obbSize; |
| atrace_pm_end(); |
| |
| atrace_pm_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_pm_end(); |
| } else { |
| atrace_pm_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_pm_end(); |
| |
| atrace_pm_begin("obb"); |
| auto obbPath = StringPrintf("%s/Android/obb", |
| create_data_media_path(uuid_, userId).c_str()); |
| calculate_tree_size(obbPath, &obbSize); |
| if (!(flags & FLAG_USE_QUOTA)) { |
| totalSize -= obbSize; |
| } |
| atrace_pm_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::getAppCrates( |
| const std::optional<std::string>& uuid, |
| const std::vector<std::string>& packageNames, int32_t userId, |
| std::optional<std::vector<std::optional<CrateMetadata>>>* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| CHECK_ARGUMENT_UUID(uuid); |
| for (const auto& packageName : packageNames) { |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| } |
| #ifdef ENABLE_STORAGE_CRATES |
| LOCK_PACKAGE_USER(); |
| |
| auto retVector = std::vector<std::optional<CrateMetadata>>(); |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| |
| std::function<void(CratedFolder, CrateMetadata&&)> onCreateCrate = |
| [&](CratedFolder cratedFolder, CrateMetadata&& crateMetadata) -> void { |
| if (cratedFolder == nullptr) { |
| return; |
| } |
| retVector.push_back(std::move(crateMetadata)); |
| }; |
| |
| for (const auto& packageName : packageNames) { |
| #if CRATE_DEBUG |
| LOG(DEBUG) << "packageName = " << packageName; |
| #endif |
| auto crateManager = std::make_unique<CrateManager>(uuid_, userId, packageName); |
| crateManager->traverseAllCrates(onCreateCrate); |
| } |
| |
| #if CRATE_DEBUG |
| LOG(WARNING) << "retVector.size() =" << retVector.size(); |
| for (auto& item : retVector) { |
| CrateManager::dump(*item); |
| } |
| #endif |
| |
| *_aidl_return = std::move(retVector); |
| #else // ENABLE_STORAGE_CRATES |
| _aidl_return->reset(); |
| |
| /* prevent compile warning fail */ |
| if (userId < 0) { |
| return error(); |
| } |
| #endif // ENABLE_STORAGE_CRATES |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::getUserCrates( |
| const std::optional<std::string>& uuid, int32_t userId, |
| std::optional<std::vector<std::optional<CrateMetadata>>>* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| CHECK_ARGUMENT_UUID(uuid); |
| #ifdef ENABLE_STORAGE_CRATES |
| LOCK_USER(); |
| |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| auto retVector = std::vector<std::optional<CrateMetadata>>(); |
| |
| std::function<void(CratedFolder, CrateMetadata&&)> onCreateCrate = |
| [&](CratedFolder cratedFolder, CrateMetadata&& crateMetadata) -> void { |
| if (cratedFolder == nullptr) { |
| return; |
| } |
| retVector.push_back(std::move(crateMetadata)); |
| }; |
| |
| std::function<void(FTSENT*)> onHandingPackage = [&](FTSENT* packageDir) -> void { |
| auto crateManager = std::make_unique<CrateManager>(uuid_, userId, packageDir->fts_name); |
| crateManager->traverseAllCrates(onCreateCrate); |
| }; |
| CrateManager::traverseAllPackagesForUser(uuid, userId, onHandingPackage); |
| |
| #if CRATE_DEBUG |
| LOG(DEBUG) << "retVector.size() =" << retVector.size(); |
| for (auto& item : retVector) { |
| CrateManager::dump(*item); |
| } |
| #endif |
| |
| *_aidl_return = std::move(retVector); |
| #else // ENABLE_STORAGE_CRATES |
| _aidl_return->reset(); |
| |
| /* prevent compile warning fail */ |
| if (userId < 0) { |
| return error(); |
| } |
| #endif // ENABLE_STORAGE_CRATES |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::setAppQuota(const std::optional<std::string>& uuid, |
| int32_t userId, int32_t appId, int64_t cacheQuota) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| 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 dumpClassesAndMethods, bool* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| CHECK_ARGUMENT_PATH(codePath); |
| LOCK_PACKAGE(); |
| |
| *_aidl_return = dump_profiles(uid, packageName, profileName, codePath, dumpClassesAndMethods); |
| 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_PATH(systemProfile); |
| if (!base::EndsWith(systemProfile, ".prof")) { |
| return exception(binder::Status::EX_ILLEGAL_ARGUMENT, |
| StringPrintf("System profile path %s does not end with .prof", |
| systemProfile.c_str())); |
| } |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| CHECK_ARGUMENT_FILE_NAME(profileName); |
| if (!base::EndsWith(profileName, ".prof")) { |
| return exception(binder::Status::EX_ILLEGAL_ARGUMENT, |
| StringPrintf("Profile name %s does not end with .prof", |
| profileName.c_str())); |
| } |
| LOCK_PACKAGE(); |
| *_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, int* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| LOCK_PACKAGE(); |
| |
| *_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); |
| LOCK_PACKAGE(); |
| |
| *_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); |
| LOCK_PACKAGE(); |
| |
| 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::optional<std::string>& data, |
| const char* default_value = nullptr) { |
| return data ? data->c_str() : default_value; |
| } |
| binder::Status InstalldNativeService::dexopt( |
| const std::string& apkPath, int32_t uid, const std::string& packageName, |
| const std::string& instructionSet, int32_t dexoptNeeded, |
| const std::optional<std::string>& outputPath, int32_t dexFlags, |
| const std::string& compilerFilter, const std::optional<std::string>& uuid, |
| const std::optional<std::string>& classLoaderContext, |
| const std::optional<std::string>& seInfo, bool downgrade, int32_t targetSdkVersion, |
| const std::optional<std::string>& profileName, |
| const std::optional<std::string>& dexMetadataPath, |
| const std::optional<std::string>& compilationReason, bool* aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| CHECK_ARGUMENT_PATH(apkPath); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| CHECK_ARGUMENT_PATH(outputPath); |
| CHECK_ARGUMENT_PATH(dexMetadataPath); |
| const auto userId = multiuser_get_user_id(uid); |
| LOCK_PACKAGE_USER(); |
| |
| const char* oat_dir = getCStr(outputPath); |
| const char* instruction_set = instructionSet.c_str(); |
| if (oat_dir != nullptr && !createOatDir(packageName, oat_dir, instruction_set).isOk()) { |
| // Can't create oat dir - let dexopt use cache dir. |
| oat_dir = nullptr; |
| } |
| |
| const char* apk_path = apkPath.c_str(); |
| const char* pkgname = packageName.c_str(); |
| 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; |
| bool completed = false; // not necessary but for compiler |
| 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, |
| &completed); |
| *aidl_return = completed; |
| return res ? error(res, error_msg) : ok(); |
| } |
| |
| binder::Status InstalldNativeService::controlDexOptBlocking(bool block) { |
| android::installd::control_dexopt_blocking(block); |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::linkNativeLibraryDirectory( |
| const std::optional<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); |
| LOCK_PACKAGE_USER(); |
| |
| 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; |
| } |
| |
| binder::Status InstalldNativeService::restoreconAppData(const std::optional<std::string>& uuid, |
| const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, |
| const std::string& seInfo) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| CHECK_ARGUMENT_UUID(uuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| LOCK_PACKAGE_USER(); |
| return restoreconAppDataLocked(uuid, packageName, userId, flags, appId, seInfo); |
| } |
| |
| binder::Status InstalldNativeService::restoreconAppDataLocked( |
| const std::optional<std::string>& uuid, const std::string& packageName, int32_t userId, |
| int32_t flags, int32_t appId, const std::string& seInfo) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| CHECK_ARGUMENT_UUID(uuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| |
| 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::restoreconSdkDataLocked( |
| const std::optional<std::string>& uuid, const std::string& packageName, int32_t userId, |
| int32_t flags, int32_t appId, const std::string& seInfo) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER(userId); |
| CHECK_ARGUMENT_UUID(uuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| |
| 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_sdk_sandbox_uid(userId, appId); |
| constexpr int storageFlags[2] = {FLAG_STORAGE_CE, FLAG_STORAGE_DE}; |
| for (int currentFlag : storageFlags) { |
| if ((flags & currentFlag) == 0) { |
| continue; |
| } |
| const bool isCeData = (currentFlag == FLAG_STORAGE_CE); |
| const auto packagePath = |
| create_data_misc_sdk_sandbox_package_path(uuid_, isCeData, userId, pkgName); |
| if (access(packagePath.c_str(), F_OK) != 0) { |
| LOG(INFO) << "Missing source " << packagePath; |
| continue; |
| } |
| const auto subDirHandler = [&packagePath, &seinfo, &uid, &seflags, |
| &res](const std::string& subDir) { |
| const auto& fullpath = packagePath + "/" + subDir; |
| if (selinux_android_restorecon_pkgdir(fullpath.c_str(), seinfo, uid, seflags) < 0) { |
| res = error("restorecon failed for " + fullpath); |
| } |
| }; |
| const auto ec = foreach_subdir(packagePath, subDirHandler); |
| if (ec != 0) { |
| res = error("Failed to restorecon for subdirs of " + packagePath); |
| } |
| } |
| return res; |
| } |
| |
| binder::Status InstalldNativeService::createOatDir(const std::string& packageName, |
| const std::string& oatDir, |
| const std::string& instructionSet) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| CHECK_ARGUMENT_PATH(oatDir); |
| LOCK_PACKAGE(); |
| |
| 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& packageName, |
| const std::string& packageDir) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PATH(packageDir); |
| LOCK_PACKAGE(); |
| |
| 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& packageName, |
| const std::string& relativePath, |
| const std::string& fromBase, |
| const std::string& toBase) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| CHECK_ARGUMENT_PATH(fromBase); |
| CHECK_ARGUMENT_PATH(toBase); |
| LOCK_PACKAGE(); |
| |
| 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& packageName, |
| const std::string& apkPath, |
| const std::string& instructionSet, |
| const std::string& outputPath) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| CHECK_ARGUMENT_PATH(apkPath); |
| CHECK_ARGUMENT_PATH(outputPath); |
| LOCK_PACKAGE(); |
| |
| 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& packageName, |
| const std::string& apkPath, |
| const std::string& instructionSet, |
| const std::optional<std::string>& outputPath, |
| int64_t* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| CHECK_ARGUMENT_PATH(apkPath); |
| CHECK_ARGUMENT_PATH(outputPath); |
| LOCK_PACKAGE(); |
| |
| const char* apk_path = apkPath.c_str(); |
| const char* instruction_set = instructionSet.c_str(); |
| const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; |
| |
| *_aidl_return = delete_odex(apk_path, instruction_set, oat_dir); |
| return *_aidl_return == -1 ? error() : ok(); |
| } |
| |
| binder::Status InstalldNativeService::reconcileSecondaryDexFile( |
| const std::string& dexPath, const std::string& packageName, int32_t uid, |
| const std::vector<std::string>& isas, const std::optional<std::string>& volumeUuid, |
| int32_t storage_flag, bool* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(volumeUuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| CHECK_ARGUMENT_PATH(dexPath); |
| const auto userId = multiuser_get_user_id(uid); |
| LOCK_PACKAGE_USER(); |
| |
| bool result = android::installd::reconcile_secondary_dex_file( |
| dexPath, packageName, uid, isas, volumeUuid, storage_flag, _aidl_return); |
| return result ? ok() : error(); |
| } |
| |
| binder::Status InstalldNativeService::hashSecondaryDexFile( |
| const std::string& dexPath, const std::string& packageName, int32_t uid, |
| const std::optional<std::string>& volumeUuid, int32_t storageFlag, |
| std::vector<uint8_t>* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(volumeUuid); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| CHECK_ARGUMENT_PATH(dexPath); |
| |
| // mLock is not taken here since we will never modify the file system. |
| // If a file is modified just as we are reading it this may result in an |
| // anomalous hash, but that's ok. |
| bool result = android::installd::hash_secondary_dex_file( |
| dexPath, packageName, uid, volumeUuid, storageFlag, _aidl_return); |
| return result ? ok() : error(); |
| } |
| /** |
| * Returns true if ioctl feature (F2FS_IOC_FS{GET,SET}XATTR) is supported as |
| * these were introduced in Linux 4.14, so kernel versions before that will fail |
| * while setting project id attributes. Only when these features are enabled, |
| * storage calculation using project_id is enabled |
| */ |
| bool check_if_ioctl_feature_is_supported() { |
| bool result = false; |
| auto temp_path = StringPrintf("%smisc/installd/ioctl_check", android_data_dir.c_str()); |
| if (access(temp_path.c_str(), F_OK) != 0) { |
| int fd = open(temp_path.c_str(), O_CREAT | O_TRUNC | O_RDWR | O_CLOEXEC, 0644); |
| result = set_quota_project_id(temp_path, 0, false) == 0; |
| close(fd); |
| // delete the temp file |
| remove(temp_path.c_str()); |
| } |
| return result; |
| } |
| |
| binder::Status InstalldNativeService::setFirstBoot() { |
| ENFORCE_UID(AID_SYSTEM); |
| std::lock_guard<std::recursive_mutex> lock(mMountsLock); |
| std::string uuid; |
| if (GetOccupiedSpaceForProjectId(uuid, 0) != -1 && check_if_ioctl_feature_is_supported()) { |
| auto first_boot_path = |
| StringPrintf("%smisc/installd/using_project_ids", android_data_dir.c_str()); |
| if (access(first_boot_path.c_str(), F_OK) != 0) { |
| close(open(first_boot_path.c_str(), O_CREAT | O_TRUNC | O_RDWR | O_CLOEXEC, 0644)); |
| } |
| } |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::invalidateMounts() { |
| ENFORCE_UID(AID_SYSTEM); |
| std::lock_guard<std::recursive_mutex> lock(mMountsLock); |
| |
| mStorageMounts.clear(); |
| |
| #if !BYPASS_QUOTA |
| if (!InvalidateQuotaMounts()) { |
| return error("Failed to read mounts"); |
| } |
| #endif |
| |
| std::ifstream in("/proc/mounts"); |
| if (!in.is_open()) { |
| return error("Failed to read mounts"); |
| } |
| |
| std::string source; |
| std::string target; |
| std::string ignored; |
| while (!in.eof()) { |
| std::getline(in, source, ' '); |
| std::getline(in, target, ' '); |
| std::getline(in, ignored); |
| |
| if (android::base::GetBoolProperty(kFuseProp, false)) { |
| if (target.find(kMntFuse) == 0) { |
| LOG(DEBUG) << "Found storage mount " << source << " at " << target; |
| mStorageMounts[source] = target; |
| } |
| } else { |
| #if !BYPASS_SDCARDFS |
| if (target.find(kMntSdcardfs) == 0) { |
| LOG(DEBUG) << "Found storage mount " << source << " at " << target; |
| mStorageMounts[source] = target; |
| } |
| #endif |
| } |
| } |
| return ok(); |
| } |
| |
| // Mount volume's CE and DE storage to mirror |
| binder::Status InstalldNativeService::tryMountDataMirror( |
| const std::optional<std::string>& uuid) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| if (!sAppDataIsolationEnabled) { |
| return ok(); |
| } |
| if (!uuid) { |
| return error("Should not happen, mounting uuid == null"); |
| } |
| |
| const char* uuid_ = uuid->c_str(); |
| |
| std::lock_guard<std::recursive_mutex> lock(mMountsLock); |
| |
| std::string mirrorVolCePath(StringPrintf("%s/%s", kDataMirrorCePath, uuid_)); |
| if (fs_prepare_dir(mirrorVolCePath.c_str(), 0511, AID_SYSTEM, AID_SYSTEM) != 0) { |
| return error("Failed to create CE data mirror"); |
| } |
| |
| std::string mirrorVolDePath(StringPrintf("%s/%s", kDataMirrorDePath, uuid_)); |
| if (fs_prepare_dir(mirrorVolDePath.c_str(), 0511, AID_SYSTEM, AID_SYSTEM) != 0) { |
| return error("Failed to create DE data mirror"); |
| } |
| |
| std::string mirrorVolMiscCePath(StringPrintf("%s/%s", kMiscMirrorCePath, uuid_)); |
| if (fs_prepare_dir(mirrorVolMiscCePath.c_str(), 0511, AID_SYSTEM, AID_SYSTEM) != 0) { |
| return error("Failed to create CE misc mirror"); |
| } |
| |
| std::string mirrorVolMiscDePath(StringPrintf("%s/%s", kMiscMirrorDePath, uuid_)); |
| if (fs_prepare_dir(mirrorVolMiscDePath.c_str(), 0511, AID_SYSTEM, AID_SYSTEM) != 0) { |
| return error("Failed to create DE misc mirror"); |
| } |
| |
| auto cePath = StringPrintf("%s/user", create_data_path(uuid_).c_str()); |
| auto dePath = StringPrintf("%s/user_de", create_data_path(uuid_).c_str()); |
| auto miscCePath = StringPrintf("%s/misc_ce", create_data_path(uuid_).c_str()); |
| auto miscDePath = StringPrintf("%s/misc_de", create_data_path(uuid_).c_str()); |
| |
| if (access(cePath.c_str(), F_OK) != 0) { |
| return error("Cannot access CE path: " + cePath); |
| } |
| if (access(dePath.c_str(), F_OK) != 0) { |
| return error("Cannot access DE path: " + dePath); |
| } |
| if (access(miscCePath.c_str(), F_OK) != 0) { |
| return error("Cannot access misc CE path: " + cePath); |
| } |
| if (access(miscDePath.c_str(), F_OK) != 0) { |
| return error("Cannot access misc DE path: " + dePath); |
| } |
| |
| struct stat ceStat, mirrorCeStat; |
| if (stat(cePath.c_str(), &ceStat) != 0) { |
| return error("Failed to stat " + cePath); |
| } |
| if (stat(mirrorVolCePath.c_str(), &mirrorCeStat) != 0) { |
| return error("Failed to stat " + mirrorVolCePath); |
| } |
| |
| if (mirrorCeStat.st_ino == ceStat.st_ino && mirrorCeStat.st_dev == ceStat.st_dev) { |
| // As it's being called by prepareUserStorage, it can be called multiple times. |
| // Hence, we if we mount it already, we should skip it. |
| LOG(INFO) << "CE dir is mounted already: " + cePath; |
| return ok(); |
| } |
| |
| // Mount CE mirror |
| if (TEMP_FAILURE_RETRY(mount(cePath.c_str(), mirrorVolCePath.c_str(), NULL, |
| MS_NOSUID | MS_NODEV | MS_NOATIME | MS_BIND | MS_NOEXEC, nullptr)) == -1) { |
| return error("Failed to mount " + mirrorVolCePath); |
| } |
| |
| // Mount DE mirror |
| if (TEMP_FAILURE_RETRY(mount(dePath.c_str(), mirrorVolDePath.c_str(), NULL, |
| MS_NOSUID | MS_NODEV | MS_NOATIME | MS_BIND | MS_NOEXEC, nullptr)) == -1) { |
| return error("Failed to mount " + mirrorVolDePath); |
| } |
| |
| // Mount misc CE mirror |
| if (TEMP_FAILURE_RETRY(mount(miscCePath.c_str(), mirrorVolMiscCePath.c_str(), NULL, |
| MS_NOSUID | MS_NODEV | MS_NOATIME | MS_BIND | MS_NOEXEC, |
| nullptr)) == -1) { |
| return error("Failed to mount " + mirrorVolMiscCePath); |
| } |
| |
| // Mount misc DE mirror |
| if (TEMP_FAILURE_RETRY(mount(miscDePath.c_str(), mirrorVolMiscDePath.c_str(), NULL, |
| MS_NOSUID | MS_NODEV | MS_NOATIME | MS_BIND | MS_NOEXEC, |
| nullptr)) == -1) { |
| return error("Failed to mount " + mirrorVolMiscDePath); |
| } |
| |
| return ok(); |
| } |
| |
| // Unmount volume's CE and DE storage from mirror |
| binder::Status InstalldNativeService::onPrivateVolumeRemoved( |
| const std::optional<std::string>& uuid) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_UUID(uuid); |
| if (!sAppDataIsolationEnabled) { |
| return ok(); |
| } |
| if (!uuid) { |
| // It happens when private volume failed to mount. |
| LOG(INFO) << "Ignore unmount uuid=null"; |
| return ok(); |
| } |
| const char* uuid_ = uuid->c_str(); |
| |
| binder::Status res = ok(); |
| |
| std::string mirrorCeVolPath(StringPrintf("%s/%s", kDataMirrorCePath, uuid_)); |
| std::string mirrorDeVolPath(StringPrintf("%s/%s", kDataMirrorDePath, uuid_)); |
| std::string mirrorMiscCeVolPath(StringPrintf("%s/%s", kMiscMirrorCePath, uuid_)); |
| std::string mirrorMiscDeVolPath(StringPrintf("%s/%s", kMiscMirrorDePath, uuid_)); |
| |
| std::lock_guard<std::recursive_mutex> lock(mMountsLock); |
| |
| // Unmount CE storage |
| if (TEMP_FAILURE_RETRY(umount(mirrorCeVolPath.c_str())) != 0) { |
| if (errno != ENOENT) { |
| res = error(StringPrintf("Failed to umount %s %s", mirrorCeVolPath.c_str(), |
| strerror(errno))); |
| } |
| } |
| if (delete_dir_contents_and_dir(mirrorCeVolPath, true) != 0) { |
| res = error("Failed to delete " + mirrorCeVolPath); |
| } |
| |
| // Unmount DE storage |
| if (TEMP_FAILURE_RETRY(umount(mirrorDeVolPath.c_str())) != 0) { |
| if (errno != ENOENT) { |
| res = error(StringPrintf("Failed to umount %s %s", mirrorDeVolPath.c_str(), |
| strerror(errno))); |
| } |
| } |
| if (delete_dir_contents_and_dir(mirrorDeVolPath, true) != 0) { |
| res = error("Failed to delete " + mirrorDeVolPath); |
| } |
| |
| // Unmount misc CE storage |
| if (TEMP_FAILURE_RETRY(umount(mirrorMiscCeVolPath.c_str())) != 0) { |
| if (errno != ENOENT) { |
| res = error(StringPrintf("Failed to umount %s %s", mirrorMiscCeVolPath.c_str(), |
| strerror(errno))); |
| } |
| } |
| if (delete_dir_contents_and_dir(mirrorMiscCeVolPath, true) != 0) { |
| res = error("Failed to delete " + mirrorMiscCeVolPath); |
| } |
| |
| // Unmount misc DE storage |
| if (TEMP_FAILURE_RETRY(umount(mirrorMiscDeVolPath.c_str())) != 0) { |
| if (errno != ENOENT) { |
| res = error(StringPrintf("Failed to umount %s %s", mirrorMiscDeVolPath.c_str(), |
| strerror(errno))); |
| } |
| } |
| if (delete_dir_contents_and_dir(mirrorMiscDeVolPath, true) != 0) { |
| res = error("Failed to delete " + mirrorMiscDeVolPath); |
| } |
| |
| return res; |
| } |
| |
| std::string InstalldNativeService::findDataMediaPath( |
| const std::optional<std::string>& uuid, userid_t userid) { |
| std::lock_guard<std::recursive_mutex> lock(mMountsLock); |
| const char* uuid_ = uuid ? uuid->c_str() : nullptr; |
| auto path = StringPrintf("%s/media", create_data_path(uuid_).c_str()); |
| auto resolved = mStorageMounts[path]; |
| if (resolved.empty()) { |
| LOG(WARNING) << "Failed to find storage mount for " << path; |
| resolved = path; |
| } |
| return StringPrintf("%s/%u", resolved.c_str(), userid); |
| } |
| |
| binder::Status InstalldNativeService::isQuotaSupported( |
| const std::optional<std::string>& uuid, bool* _aidl_return) { |
| *_aidl_return = IsQuotaSupported(uuid.value_or("")); |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::prepareAppProfile(const std::string& packageName, |
| int32_t userId, int32_t appId, const std::string& profileName, const std::string& codePath, |
| const std::optional<std::string>& dexMetadata, bool* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| ENFORCE_VALID_USER_OR_NULL(userId); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| CHECK_ARGUMENT_PATH(codePath); |
| LOCK_PACKAGE_USER(); |
| |
| *_aidl_return = prepare_app_profile(packageName, userId, appId, profileName, codePath, |
| dexMetadata); |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::migrateLegacyObbData() { |
| ENFORCE_UID(AID_SYSTEM); |
| // NOTE: The lint warning doesn't apply to the use of system(3) with |
| // absolute parse and no command line arguments. |
| if (system("/system/bin/migrate_legacy_obb_data") != 0) { // NOLINT(cert-env33-c) |
| LOG(ERROR) << "Unable to migrate legacy obb data"; |
| } |
| |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::cleanupInvalidPackageDirs( |
| const std::optional<std::string>& uuid, int32_t userId, int32_t flags) { |
| ENFORCE_VALID_USER(userId); |
| const char* uuid_cstr = uuid ? uuid->c_str() : nullptr; |
| |
| if (flags & FLAG_STORAGE_CE) { |
| auto ce_path = create_data_user_ce_path(uuid_cstr, userId); |
| cleanup_invalid_package_dirs_under_path(ce_path); |
| auto sdksandbox_ce_path = |
| create_data_misc_sdk_sandbox_path(uuid_cstr, /*isCeData=*/true, userId); |
| cleanup_invalid_package_dirs_under_path(sdksandbox_ce_path); |
| } |
| |
| if (flags & FLAG_STORAGE_DE) { |
| auto de_path = create_data_user_de_path(uuid_cstr, userId); |
| cleanup_invalid_package_dirs_under_path(de_path); |
| auto sdksandbox_de_path = |
| create_data_misc_sdk_sandbox_path(uuid_cstr, /*isCeData=*/false, userId); |
| cleanup_invalid_package_dirs_under_path(sdksandbox_de_path); |
| } |
| |
| return ok(); |
| } |
| |
| binder::Status InstalldNativeService::getOdexVisibility( |
| const std::string& packageName, const std::string& apkPath, |
| const std::string& instructionSet, const std::optional<std::string>& outputPath, |
| int32_t* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| CHECK_ARGUMENT_PATH(apkPath); |
| CHECK_ARGUMENT_PATH(outputPath); |
| LOCK_PACKAGE(); |
| |
| const char* apk_path = apkPath.c_str(); |
| const char* instruction_set = instructionSet.c_str(); |
| const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; |
| |
| *_aidl_return = get_odex_visibility(apk_path, instruction_set, oat_dir); |
| return *_aidl_return == -1 ? error() : ok(); |
| } |
| |
| // Creates an auth token to be used in enableFsverity. This token is really to store a proof that |
| // the caller can write to a file, represented by the authFd. Effectively, system_server as the |
| // attacker-in-the-middle cannot enable fs-verity on arbitrary app files. If the FD is not writable, |
| // return null. |
| // |
| // appUid and userId are passed for additional ownership check, such that one app can not be |
| // authenticated for another app's file. These parameters are assumed trusted for this purpose of |
| // consistency check. |
| // |
| // Notably, creating the token allows us to manage the writable FD easily during enableFsverity. |
| // Since enabling fs-verity to a file requires no outstanding writable FD, passing the authFd to the |
| // server allows the server to hold the only reference (as long as the client app doesn't). |
| binder::Status InstalldNativeService::createFsveritySetupAuthToken( |
| const ParcelFileDescriptor& authFd, int32_t appUid, int32_t userId, |
| sp<IFsveritySetupAuthToken>* _aidl_return) { |
| CHECK_ARGUMENT_UID_IN_APP_RANGE(appUid); |
| ENFORCE_VALID_USER(userId); |
| |
| auto token = sp<FsveritySetupAuthToken>::make(); |
| binder::Status status = token->authenticate(authFd, appUid, userId); |
| if (!status.isOk()) { |
| return status; |
| } |
| *_aidl_return = token; |
| return ok(); |
| } |
| |
| // Enables fs-verity for filePath, which must be an absolute path and the same inode as in the auth |
| // token previously returned from createFsveritySetupAuthToken, and owned by the app uid. As |
| // installd is more privileged than its client / system server, we attempt to limit what a |
| // (compromised) client can do. |
| // |
| // The reason for this app request to go through installd is to avoid exposing a risky area (PKCS#7 |
| // signature verification) in the kernel to the app as an attack surface (it can't be system server |
| // because it can't override DAC and manipulate app files). Note that we should be able to drop |
| // these hops and simply the app calls the ioctl, once all upgrading devices run with a kernel |
| // without fs-verity built-in signature (https://r.android.com/2650402). |
| binder::Status InstalldNativeService::enableFsverity(const sp<IFsveritySetupAuthToken>& authToken, |
| const std::string& filePath, |
| const std::string& packageName, |
| int32_t* _aidl_return) { |
| ENFORCE_UID(AID_SYSTEM); |
| CHECK_ARGUMENT_PATH(filePath); |
| CHECK_ARGUMENT_PACKAGE_NAME(packageName); |
| LOCK_PACKAGE(); |
| if (authToken == nullptr) { |
| return exception(binder::Status::EX_ILLEGAL_ARGUMENT, "Received a null auth token"); |
| } |
| |
| // Authenticate to check the targeting file is the same inode as the authFd. |
| sp<IBinder> authTokenBinder = IInterface::asBinder(authToken)->localBinder(); |
| if (authTokenBinder == nullptr) { |
| return exception(binder::Status::EX_SECURITY, "Received a non-local auth token"); |
| } |
| auto authTokenInstance = sp<FsveritySetupAuthToken>::cast(authTokenBinder); |
| unique_fd rfd(open(filePath.c_str(), O_RDONLY | O_CLOEXEC | O_NOFOLLOW)); |
| struct stat stFromPath; |
| if (fstat(rfd.get(), &stFromPath) < 0) { |
| *_aidl_return = errno; |
| return ok(); |
| } |
| if (!authTokenInstance->isSameStat(stFromPath)) { |
| LOG(DEBUG) << "FD authentication failed"; |
| *_aidl_return = EPERM; |
| return ok(); |
| } |
| |
| fsverity_enable_arg arg = {}; |
| arg.version = 1; |
| arg.hash_algorithm = FS_VERITY_HASH_ALG_SHA256; |
| arg.block_size = 4096; |
| if (ioctl(rfd.get(), FS_IOC_ENABLE_VERITY, &arg) < 0) { |
| *_aidl_return = errno; |
| } else { |
| *_aidl_return = 0; |
| } |
| return ok(); |
| } |
| |
| } // namespace installd |
| } // namespace android |