Filename refactoring, remove DEXOPT_OTA flag.
Test: builds, boots
Bug: 13758960, 30944031
Change-Id: Ib60899fc70b12f76fad9dfad596b513777752703
diff --git a/cmds/installd/InstalldNativeService.cpp b/cmds/installd/InstalldNativeService.cpp
new file mode 100644
index 0000000..5d01368
--- /dev/null
+++ b/cmds/installd/InstalldNativeService.cpp
@@ -0,0 +1,2578 @@
+/*
+** 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 <inttypes.h>
+#include <regex>
+#include <stdlib.h>
+#include <sys/capability.h>
+#include <sys/file.h>
+#include <sys/resource.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/xattr.h>
+#include <unistd.h>
+
+#include <android-base/logging.h>
+#include <android-base/stringprintf.h>
+#include <android-base/strings.h>
+#include <android-base/unique_fd.h>
+#include <cutils/fs.h>
+#include <cutils/log.h> // TODO: Move everything to base/logging.
+#include <cutils/sched_policy.h>
+#include <diskusage/dirsize.h>
+#include <logwrap/logwrap.h>
+#include <private/android_filesystem_config.h>
+#include <selinux/android.h>
+#include <system/thread_defs.h>
+
+#include "dexopt.h"
+#include "globals.h"
+#include "installd_deps.h"
+#include "otapreopt_utils.h"
+#include "utils.h"
+
+#ifndef LOG_TAG
+#define LOG_TAG "installd"
+#endif
+
+using android::base::EndsWith;
+using android::base::StringPrintf;
+
+namespace android {
+namespace installd {
+
+static constexpr const char* kCpPath = "/system/bin/cp";
+static constexpr const char* kXattrDefault = "user.default";
+
+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* IDMAP_PREFIX = "/data/resource-cache/";
+static constexpr const char* IDMAP_SUFFIX = "@idmap";
+
+// NOTE: keep in sync with StorageManager
+static constexpr int FLAG_STORAGE_DE = 1 << 0;
+static constexpr int FLAG_STORAGE_CE = 1 << 1;
+
+// NOTE: keep in sync with Installer
+static constexpr int FLAG_CLEAR_CACHE_ONLY = 1 << 8;
+static constexpr int FLAG_CLEAR_CODE_CACHE_ONLY = 1 << 9;
+
+/* dexopt needed flags matching those in dalvik.system.DexFile */
+static constexpr int DEX2OAT_FROM_SCRATCH = 1;
+static constexpr int DEX2OAT_FOR_BOOT_IMAGE = 2;
+static constexpr int DEX2OAT_FOR_FILTER = 3;
+static constexpr int DEX2OAT_FOR_RELOCATION = 4;
+static constexpr int PATCHOAT_FOR_RELOCATION = 5;
+
+#define MIN_RESTRICTED_HOME_SDK_VERSION 24 // > M
+
+typedef int fd_t;
+
+namespace {
+
+constexpr const char* kDump = "android.permission.DUMP";
+
+binder::Status checkPermission(const char* permission) {
+ pid_t pid;
+ uid_t uid;
+
+ if (checkCallingPermission(String16(permission), reinterpret_cast<int32_t*>(&pid),
+ reinterpret_cast<int32_t*>(&uid))) {
+ return binder::Status::ok();
+ } else {
+ auto err = StringPrintf("UID %d / PID %d lacks permission %s", uid, pid, permission);
+ return binder::Status::fromExceptionCode(binder::Status::EX_SECURITY, String8(err.c_str()));
+ }
+}
+
+binder::Status checkUid(uid_t expectedUid) {
+ uid_t uid = IPCThreadState::self()->getCallingUid();
+ if (uid == expectedUid || uid == AID_ROOT) {
+ return binder::Status::ok();
+ } else {
+ auto err = StringPrintf("UID %d is not expected UID %d", uid, expectedUid);
+ return binder::Status::fromExceptionCode(binder::Status::EX_SECURITY, String8(err.c_str()));
+ }
+}
+
+#define ENFORCE_UID(uid) { \
+ binder::Status status = checkUid((uid)); \
+ if (!status.isOk()) { \
+ return status; \
+ } \
+}
+
+} // namespace
+
+status_t InstalldNativeService::start() {
+ IPCThreadState::self()->disableBackgroundScheduling(true);
+ status_t ret = BinderService<InstalldNativeService>::publish();
+ if (ret != android::OK) {
+ return ret;
+ }
+ sp<ProcessState> ps(ProcessState::self());
+ ps->startThreadPool();
+ ps->giveThreadPoolName();
+ return android::OK;
+}
+
+status_t InstalldNativeService::dump(int fd, const Vector<String16> & /* args */) {
+ const binder::Status dump_permission = checkPermission(kDump);
+ if (!dump_permission.isOk()) {
+ const String8 msg(dump_permission.toString8());
+ write(fd, msg.string(), msg.size());
+ return PERMISSION_DENIED;
+ }
+
+ std::string msg = "installd is happy\n";
+ write(fd, msg.c_str(), strlen(msg.c_str()));
+ return NO_ERROR;
+}
+
+static bool property_get_bool(const char* property_name, bool default_value = false) {
+ char tmp_property_value[kPropertyValueMax];
+ bool have_property = get_property(property_name, tmp_property_value, nullptr) > 0;
+ if (!have_property) {
+ return default_value;
+ }
+ return strcmp(tmp_property_value, "true") == 0;
+}
+
+// Keep profile paths in sync with ActivityThread.
+constexpr const char* PRIMARY_PROFILE_NAME = "primary.prof";
+static std::string create_primary_profile(const std::string& profile_dir) {
+ return StringPrintf("%s/%s", profile_dir.c_str(), PRIMARY_PROFILE_NAME);
+}
+
+/**
+ * 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) {
+ int res = 0;
+ char* before = nullptr;
+ char* after = nullptr;
+
+ // Note that SELINUX_ANDROID_RESTORECON_DATADATA flag is set by
+ // libselinux. Not needed here.
+
+ if (lgetfilecon(path.c_str(), &before) < 0) {
+ PLOG(ERROR) << "Failed before getfilecon for " << path;
+ goto fail;
+ }
+ if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 0) < 0) {
+ PLOG(ERROR) << "Failed top-level restorecon for " << path;
+ goto fail;
+ }
+ if (lgetfilecon(path.c_str(), &after) < 0) {
+ PLOG(ERROR) << "Failed after getfilecon for " << path;
+ goto fail;
+ }
+
+ // If the initial top-level restorecon above changed the label, then go
+ // back and restorecon everything recursively
+ if (strcmp(before, after)) {
+ LOG(DEBUG) << "Detected label change from " << before << " to " << after << " at " << path
+ << "; running recursive restorecon";
+ if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid,
+ SELINUX_ANDROID_RESTORECON_RECURSE) < 0) {
+ PLOG(ERROR) << "Failed recursive restorecon for " << path;
+ goto fail;
+ }
+ }
+
+ goto done;
+fail:
+ res = -1;
+done:
+ free(before);
+ free(after);
+ return res;
+}
+
+static int restorecon_app_data_lazy(const std::string& parent, const char* name,
+ const std::string& seInfo, uid_t uid) {
+ return restorecon_app_data_lazy(StringPrintf("%s/%s", parent.c_str(), name), seInfo, uid);
+}
+
+static int prepare_app_dir(const std::string& path, mode_t target_mode, uid_t uid) {
+ if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) != 0) {
+ PLOG(ERROR) << "Failed to prepare " << path;
+ return -1;
+ }
+ return 0;
+}
+
+static int prepare_app_dir(const std::string& parent, const char* name, mode_t target_mode,
+ uid_t uid) {
+ return prepare_app_dir(StringPrintf("%s/%s", parent.c_str(), name), target_mode, uid);
+}
+
+binder::Status InstalldNativeService::createAppData(const std::unique_ptr<std::string>& uuid,
+ const std::string& packageName, int32_t userId, int32_t flags, int32_t appId,
+ const std::string& seInfo, int32_t targetSdkVersion) {
+ ENFORCE_UID(AID_SYSTEM);
+
+ const char* uuid_ = uuid ? uuid->c_str() : nullptr;
+ const char* pkgname = packageName.c_str();
+
+ uid_t uid = multiuser_get_uid(userId, appId);
+ mode_t target_mode = targetSdkVersion >= MIN_RESTRICTED_HOME_SDK_VERSION ? 0700 : 0751;
+ if (flags & FLAG_STORAGE_CE) {
+ auto path = create_data_user_ce_package_path(uuid_, userId, pkgname);
+ if (prepare_app_dir(path, target_mode, uid) ||
+ prepare_app_dir(path, "cache", 0771, uid) ||
+ prepare_app_dir(path, "code_cache", 0771, uid)) {
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+
+ // Consider restorecon over contents if label changed
+ if (restorecon_app_data_lazy(path, seInfo, uid) ||
+ restorecon_app_data_lazy(path, "cache", seInfo, uid) ||
+ restorecon_app_data_lazy(path, "code_cache", seInfo, uid)) {
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+
+ // 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 binder::Status::fromServiceSpecificError(-1);
+ }
+ }
+ if (flags & FLAG_STORAGE_DE) {
+ auto path = create_data_user_de_package_path(uuid_, userId, pkgname);
+ if (prepare_app_dir(path, target_mode, uid)) {
+ // TODO: include result once 25796509 is fixed
+ return binder::Status::ok();
+ }
+
+ // Consider restorecon over contents if label changed
+ if (restorecon_app_data_lazy(path, seInfo, uid)) {
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+
+ if (property_get_bool("dalvik.vm.usejitprofiles")) {
+ const std::string profile_path = create_data_user_profile_package_path(userId, pkgname);
+ // read-write-execute only for the app user.
+ if (fs_prepare_dir_strict(profile_path.c_str(), 0700, uid, uid) != 0) {
+ PLOG(ERROR) << "Failed to prepare " << profile_path;
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+ std::string profile_file = create_primary_profile(profile_path);
+ // read-write only for the app user.
+ if (fs_prepare_file_strict(profile_file.c_str(), 0600, uid, uid) != 0) {
+ PLOG(ERROR) << "Failed to prepare " << profile_path;
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+ const std::string ref_profile_path = create_data_ref_profile_package_path(pkgname);
+ // dex2oat/profman runs under the shared app gid and it needs to read/write reference
+ // profiles.
+ appid_t shared_app_gid = multiuser_get_shared_app_gid(uid);
+ if (fs_prepare_dir_strict(
+ ref_profile_path.c_str(), 0700, shared_app_gid, shared_app_gid) != 0) {
+ PLOG(ERROR) << "Failed to prepare " << ref_profile_path;
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+ }
+ }
+ return binder::Status::ok();
+}
+
+binder::Status InstalldNativeService::migrateAppData(const std::unique_ptr<std::string>& uuid,
+ const std::string& packageName, int32_t userId, int32_t flags) {
+ ENFORCE_UID(AID_SYSTEM);
+ 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) {
+ PLOG(ERROR) << "Failed to mark default storage " << ce_path;
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+ }
+
+ // 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) {
+ PLOG(ERROR) << "Failed to delete";
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+ if (rename(source.c_str(), target.c_str()) != 0) {
+ PLOG(ERROR) << "Failed to rename";
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+ }
+
+ return binder::Status::ok();
+}
+
+static bool clear_profile(const std::string& profile) {
+ base::unique_fd ufd(open(profile.c_str(), O_WRONLY | O_NOFOLLOW | O_CLOEXEC));
+ if (ufd.get() < 0) {
+ if (errno != ENOENT) {
+ PLOG(WARNING) << "Could not open profile " << profile;
+ return false;
+ } else {
+ // Nothing to clear. That's ok.
+ return true;
+ }
+ }
+
+ if (flock(ufd.get(), LOCK_EX | LOCK_NB) != 0) {
+ if (errno != EWOULDBLOCK) {
+ PLOG(WARNING) << "Error locking profile " << profile;
+ }
+ // This implies that the app owning this profile is running
+ // (and has acquired the lock).
+ //
+ // If we can't acquire the lock bail out since clearing is useless anyway
+ // (the app will write again to the profile).
+ //
+ // Note:
+ // This does not impact the this is not an issue for the profiling correctness.
+ // In case this is needed because of an app upgrade, profiles will still be
+ // eventually cleared by the app itself due to checksum mismatch.
+ // If this is needed because profman advised, then keeping the data around
+ // until the next run is again not an issue.
+ //
+ // If the app attempts to acquire a lock while we've held one here,
+ // it will simply skip the current write cycle.
+ return false;
+ }
+
+ bool truncated = ftruncate(ufd.get(), 0) == 0;
+ if (!truncated) {
+ PLOG(WARNING) << "Could not truncate " << profile;
+ }
+ if (flock(ufd.get(), LOCK_UN) != 0) {
+ PLOG(WARNING) << "Error unlocking profile " << profile;
+ }
+ return truncated;
+}
+
+static bool clear_reference_profile(const char* pkgname) {
+ std::string reference_profile_dir = create_data_ref_profile_package_path(pkgname);
+ std::string reference_profile = create_primary_profile(reference_profile_dir);
+ return clear_profile(reference_profile);
+}
+
+static bool clear_current_profile(const char* pkgname, userid_t user) {
+ std::string profile_dir = create_data_user_profile_package_path(user, pkgname);
+ std::string profile = create_primary_profile(profile_dir);
+ return clear_profile(profile);
+}
+
+static bool clear_current_profiles(const char* pkgname) {
+ bool success = true;
+ std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr);
+ for (auto user : users) {
+ success &= clear_current_profile(pkgname, user);
+ }
+ return success;
+}
+
+binder::Status InstalldNativeService::clearAppProfiles(const std::string& packageName) {
+ ENFORCE_UID(AID_SYSTEM);
+ const char* pkgname = packageName.c_str();
+ bool success = true;
+ success &= clear_reference_profile(pkgname);
+ success &= clear_current_profiles(pkgname);
+ return success ? binder::Status::ok() : binder::Status::fromServiceSpecificError(-1);
+}
+
+binder::Status InstalldNativeService::clearAppData(const std::unique_ptr<std::string>& uuid,
+ const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) {
+ ENFORCE_UID(AID_SYSTEM);
+ const char* uuid_ = uuid ? uuid->c_str() : nullptr;
+ const char* pkgname = packageName.c_str();
+
+ int res = 0;
+ 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) {
+ res |= delete_dir_contents(path);
+ }
+ }
+ if (flags & FLAG_STORAGE_DE) {
+ std::string suffix = "";
+ bool only_cache = false;
+ if (flags & FLAG_CLEAR_CACHE_ONLY) {
+ suffix = CACHE_DIR_POSTFIX;
+ only_cache = true;
+ } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) {
+ suffix = CODE_CACHE_DIR_POSTFIX;
+ only_cache = true;
+ }
+
+ auto path = create_data_user_de_package_path(uuid_, userId, pkgname) + suffix;
+ if (access(path.c_str(), F_OK) == 0) {
+ // TODO: include result once 25796509 is fixed
+ delete_dir_contents(path);
+ }
+ if (!only_cache) {
+ if (!clear_current_profile(pkgname, userId)) {
+ res |= -1;
+ }
+ }
+ }
+ return res ? binder::Status::fromServiceSpecificError(-1) : binder::Status::ok();
+}
+
+static int destroy_app_reference_profile(const char *pkgname) {
+ return delete_dir_contents_and_dir(
+ create_data_ref_profile_package_path(pkgname),
+ /*ignore_if_missing*/ true);
+}
+
+static int destroy_app_current_profiles(const char *pkgname, userid_t userid) {
+ return delete_dir_contents_and_dir(
+ create_data_user_profile_package_path(userid, pkgname),
+ /*ignore_if_missing*/ true);
+}
+
+binder::Status InstalldNativeService::destroyAppProfiles(const std::string& packageName) {
+ ENFORCE_UID(AID_SYSTEM);
+ const char* pkgname = packageName.c_str();
+ int result = 0;
+ std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr);
+ for (auto user : users) {
+ result |= destroy_app_current_profiles(pkgname, user);
+ }
+ result |= destroy_app_reference_profile(pkgname);
+ return result ? binder::Status::fromServiceSpecificError(-1) : binder::Status::ok();
+}
+
+binder::Status InstalldNativeService::destroyAppData(const std::unique_ptr<std::string>& uuid,
+ const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) {
+ ENFORCE_UID(AID_SYSTEM);
+ const char* uuid_ = uuid ? uuid->c_str() : nullptr;
+ const char* pkgname = packageName.c_str();
+
+ int res = 0;
+ if (flags & FLAG_STORAGE_CE) {
+ res |= delete_dir_contents_and_dir(
+ create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode));
+ }
+ if (flags & FLAG_STORAGE_DE) {
+ res |= delete_dir_contents_and_dir(
+ create_data_user_de_package_path(uuid_, userId, pkgname));
+ destroy_app_current_profiles(pkgname, 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(pkgname);
+ }
+ return res ? binder::Status::fromServiceSpecificError(-1) : binder::Status::ok();
+}
+
+binder::Status InstalldNativeService::moveCompleteApp(const std::unique_ptr<std::string>& fromUuid,
+ const std::unique_ptr<std::string>& toUuid, const std::string& packageName,
+ const std::string& dataAppName, int32_t appId, const std::string& seInfo,
+ int32_t targetSdkVersion) {
+
+ const char* from_uuid = fromUuid ? fromUuid->c_str() : nullptr;
+ const char* to_uuid = toUuid ? toUuid->c_str() : nullptr;
+ const char* package_name = packageName.c_str();
+ const char* data_app_name = dataAppName.c_str();
+
+ std::vector<userid_t> users = get_known_users(from_uuid);
+
+ // Copy app
+ {
+ auto from = create_data_app_package_path(from_uuid, data_app_name);
+ auto to = create_data_app_package_path(to_uuid, data_app_name);
+ auto to_parent = create_data_app_path(to_uuid);
+
+ char *argv[] = {
+ (char*) kCpPath,
+ (char*) "-F", /* delete any existing destination file first (--remove-destination) */
+ (char*) "-p", /* preserve timestamps, ownership, and permissions */
+ (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */
+ (char*) "-P", /* Do not follow symlinks [default] */
+ (char*) "-d", /* don't dereference symlinks */
+ (char*) from.c_str(),
+ (char*) to_parent.c_str()
+ };
+
+ LOG(DEBUG) << "Copying " << from << " to " << to;
+ int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true);
+
+ if (rc != 0) {
+ LOG(ERROR) << "Failed copying " << from << " to " << to
+ << ": status " << rc;
+ goto fail;
+ }
+
+ if (selinux_android_restorecon(to.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) {
+ LOG(ERROR) << "Failed to restorecon " << to;
+ goto fail;
+ }
+ }
+
+ // Copy private data for all known users
+ for (auto user : users) {
+
+ // Data source may not exist for all users; that's okay
+ auto from_ce = create_data_user_ce_package_path(from_uuid, user, package_name);
+ if (access(from_ce.c_str(), F_OK) != 0) {
+ LOG(INFO) << "Missing source " << from_ce;
+ continue;
+ }
+
+ if (!createAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, appId,
+ seInfo, targetSdkVersion).isOk()) {
+ LOG(ERROR) << "Failed to create package target on " << to_uuid;
+ goto fail;
+ }
+
+ char *argv[] = {
+ (char*) kCpPath,
+ (char*) "-F", /* delete any existing destination file first (--remove-destination) */
+ (char*) "-p", /* preserve timestamps, ownership, and permissions */
+ (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */
+ (char*) "-P", /* Do not follow symlinks [default] */
+ (char*) "-d", /* don't dereference symlinks */
+ nullptr,
+ nullptr
+ };
+
+ {
+ auto from = create_data_user_de_package_path(from_uuid, user, package_name);
+ auto to = create_data_user_de_path(to_uuid, user);
+ argv[6] = (char*) from.c_str();
+ argv[7] = (char*) to.c_str();
+
+ LOG(DEBUG) << "Copying " << from << " to " << to;
+ int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true);
+ if (rc != 0) {
+ LOG(ERROR) << "Failed copying " << from << " to " << to << " with status " << rc;
+ goto fail;
+ }
+ }
+ {
+ auto from = create_data_user_ce_package_path(from_uuid, user, package_name);
+ auto to = create_data_user_ce_path(to_uuid, user);
+ argv[6] = (char*) from.c_str();
+ argv[7] = (char*) to.c_str();
+
+ LOG(DEBUG) << "Copying " << from << " to " << to;
+ int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true);
+ if (rc != 0) {
+ LOG(ERROR) << "Failed copying " << from << " to " << to << " with status " << rc;
+ goto fail;
+ }
+ }
+
+ if (!restoreconAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE,
+ appId, seInfo).isOk()) {
+ LOG(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 binder::Status::ok();
+
+fail:
+ // Nuke everything we might have already copied
+ {
+ auto to = create_data_app_package_path(to_uuid, data_app_name);
+ if (delete_dir_contents(to.c_str(), 1, NULL) != 0) {
+ LOG(WARNING) << "Failed to rollback " << to;
+ }
+ }
+ for (auto user : users) {
+ {
+ auto to = create_data_user_de_package_path(to_uuid, user, package_name);
+ if (delete_dir_contents(to.c_str(), 1, NULL) != 0) {
+ LOG(WARNING) << "Failed to rollback " << to;
+ }
+ }
+ {
+ auto to = create_data_user_ce_package_path(to_uuid, user, package_name);
+ if (delete_dir_contents(to.c_str(), 1, NULL) != 0) {
+ LOG(WARNING) << "Failed to rollback " << to;
+ }
+ }
+ }
+ return binder::Status::fromServiceSpecificError(-1);
+}
+
+binder::Status InstalldNativeService::createUserData(const std::unique_ptr<std::string>& uuid,
+ int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) {
+ ENFORCE_UID(AID_SYSTEM);
+ const char* uuid_ = uuid ? uuid->c_str() : nullptr;
+ int res = 0;
+ if (flags & FLAG_STORAGE_DE) {
+ if (uuid_ == nullptr) {
+ res = ensure_config_user_dirs(userId);
+ }
+ }
+ return res ? binder::Status::fromServiceSpecificError(-1) : binder::Status::ok();
+}
+
+binder::Status InstalldNativeService::destroyUserData(const std::unique_ptr<std::string>& uuid,
+ int32_t userId, int32_t flags) {
+ ENFORCE_UID(AID_SYSTEM);
+ const char* uuid_ = uuid ? uuid->c_str() : nullptr;
+ int res = 0;
+ if (flags & FLAG_STORAGE_DE) {
+ res |= delete_dir_contents_and_dir(create_data_user_de_path(uuid_, userId), true);
+ if (uuid_ == nullptr) {
+ res |= delete_dir_contents_and_dir(create_data_misc_legacy_path(userId), true);
+ res |= delete_dir_contents_and_dir(create_data_user_profiles_path(userId), true);
+ }
+ }
+ if (flags & FLAG_STORAGE_CE) {
+ res |= delete_dir_contents_and_dir(create_data_user_ce_path(uuid_, userId), true);
+ res |= delete_dir_contents_and_dir(create_data_media_path(uuid_, userId), true);
+ }
+ return res ? binder::Status::fromServiceSpecificError(-1) : binder::Status::ok();
+}
+
+/* Try to ensure free_size bytes of storage are available.
+ * Returns 0 on success.
+ * This is rather simple-minded because doing a full LRU would
+ * be potentially memory-intensive, and without atime it would
+ * also require that apps constantly modify file metadata even
+ * when just reading from the cache, which is pretty awful.
+ */
+binder::Status InstalldNativeService::freeCache(const std::unique_ptr<std::string>& uuid,
+ int64_t freeStorageSize) {
+ ENFORCE_UID(AID_SYSTEM);
+ const char* uuid_ = uuid ? uuid->c_str() : nullptr;
+ cache_t* cache;
+ int64_t avail;
+
+ auto data_path = create_data_path(uuid_);
+
+ avail = data_disk_free(data_path);
+ if (avail < 0) {
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+
+ ALOGI("free_cache(%" PRId64 ") avail %" PRId64 "\n", freeStorageSize, avail);
+ if (avail >= freeStorageSize) {
+ return binder::Status::ok();
+ }
+
+ cache = start_cache_collection();
+
+ auto users = get_known_users(uuid_);
+ for (auto user : users) {
+ add_cache_files(cache, create_data_user_ce_path(uuid_, user));
+ add_cache_files(cache, create_data_user_de_path(uuid_, user));
+ add_cache_files(cache,
+ StringPrintf("%s/Android/data", create_data_media_path(uuid_, user).c_str()));
+ }
+
+ clear_cache_files(data_path, cache, freeStorageSize);
+ finish_cache_collection(cache);
+
+ if (data_disk_free(data_path) >= freeStorageSize) {
+ return binder::Status::ok();
+ } else {
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+}
+
+binder::Status InstalldNativeService::rmdex(const std::string& codePath,
+ const std::string& instructionSet) {
+ ENFORCE_UID(AID_SYSTEM);
+ 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)) {
+ ALOGE("invalid apk path '%s' (bad prefix)\n", path);
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+
+ if (!create_cache_path(dex_path, path, instruction_set)) {
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+
+ ALOGV("unlink %s\n", dex_path);
+ if (unlink(dex_path) < 0) {
+ if (errno != ENOENT) {
+ ALOGE("Couldn't unlink %s: %s\n", dex_path, strerror(errno));
+ }
+ return binder::Status::fromServiceSpecificError(-1);
+ } else {
+ return binder::Status::ok();
+ }
+}
+
+static void add_app_data_size(std::string& path, int64_t *codesize, int64_t *datasize,
+ int64_t *cachesize) {
+ DIR *d;
+ int dfd;
+ struct dirent *de;
+ struct stat s;
+
+ d = opendir(path.c_str());
+ if (d == nullptr) {
+ PLOG(WARNING) << "Failed to open " << path;
+ return;
+ }
+ dfd = dirfd(d);
+ while ((de = readdir(d))) {
+ const char *name = de->d_name;
+
+ int64_t statsize = 0;
+ if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) {
+ statsize = stat_size(&s);
+ }
+
+ if (de->d_type == DT_DIR) {
+ int subfd;
+ int64_t dirsize = 0;
+ /* always skip "." and ".." */
+ if (name[0] == '.') {
+ if (name[1] == 0) continue;
+ if ((name[1] == '.') && (name[2] == 0)) continue;
+ }
+ subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY);
+ if (subfd >= 0) {
+ dirsize = calculate_dir_size(subfd);
+ close(subfd);
+ }
+ // TODO: check xattrs!
+ if (!strcmp(name, "cache") || !strcmp(name, "code_cache")) {
+ *datasize += statsize;
+ *cachesize += dirsize;
+ } else {
+ *datasize += dirsize + statsize;
+ }
+ } else if (de->d_type == DT_LNK && !strcmp(name, "lib")) {
+ *codesize += statsize;
+ } else {
+ *datasize += statsize;
+ }
+ }
+ closedir(d);
+}
+
+binder::Status InstalldNativeService::getAppSize(const std::unique_ptr<std::string>& uuid,
+ const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode,
+ const std::string& codePath, std::vector<int64_t>* _aidl_return) {
+ ENFORCE_UID(AID_SYSTEM);
+ const char* uuid_ = uuid ? uuid->c_str() : nullptr;
+ const char* pkgname = packageName.c_str();
+ const char* code_path = codePath.c_str();
+
+ DIR *d;
+ int dfd;
+ int64_t codesize = 0;
+ int64_t datasize = 0;
+ int64_t cachesize = 0;
+ int64_t asecsize = 0;
+
+ d = opendir(code_path);
+ if (d != nullptr) {
+ dfd = dirfd(d);
+ codesize += calculate_dir_size(dfd);
+ closedir(d);
+ }
+
+ if (flags & FLAG_STORAGE_CE) {
+ auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode);
+ add_app_data_size(path, &codesize, &datasize, &cachesize);
+ }
+ if (flags & FLAG_STORAGE_DE) {
+ auto path = create_data_user_de_package_path(uuid_, userId, pkgname);
+ add_app_data_size(path, &codesize, &datasize, &cachesize);
+ }
+
+ std::vector<int64_t> res;
+ res.push_back(codesize);
+ res.push_back(datasize);
+ res.push_back(cachesize);
+ res.push_back(asecsize);
+ *_aidl_return = res;
+ return binder::Status::ok();
+}
+
+binder::Status InstalldNativeService::getAppDataInode(const std::unique_ptr<std::string>& uuid,
+ const std::string& packageName, int32_t userId, int32_t flags, int64_t* _aidl_return) {
+ ENFORCE_UID(AID_SYSTEM);
+ const char* uuid_ = uuid ? uuid->c_str() : nullptr;
+ const char* pkgname = packageName.c_str();
+
+ int res = 0;
+ if (flags & FLAG_STORAGE_CE) {
+ auto path = create_data_user_ce_package_path(uuid_, userId, pkgname);
+ res = get_path_inode(path, reinterpret_cast<ino_t*>(_aidl_return));
+ }
+ return res ? binder::Status::fromServiceSpecificError(-1) : binder::Status::ok();
+}
+
+static int split_count(const char *str)
+{
+ char *ctx;
+ int count = 0;
+ char buf[kPropertyValueMax];
+
+ strncpy(buf, str, sizeof(buf));
+ char *pBuf = buf;
+
+ while(strtok_r(pBuf, " ", &ctx) != NULL) {
+ count++;
+ pBuf = NULL;
+ }
+
+ return count;
+}
+
+static int split(char *buf, const char **argv)
+{
+ char *ctx;
+ int count = 0;
+ char *tok;
+ char *pBuf = buf;
+
+ while((tok = strtok_r(pBuf, " ", &ctx)) != NULL) {
+ argv[count++] = tok;
+ pBuf = NULL;
+ }
+
+ return count;
+}
+
+static void run_patchoat(int input_oat_fd, int input_vdex_fd, int out_oat_fd, int out_vdex_fd,
+ const char* input_oat_file_name, const char* input_vdex_file_name,
+ const char* output_oat_file_name, const char* output_vdex_file_name,
+ const char *pkgname ATTRIBUTE_UNUSED, const char *instruction_set)
+{
+ static const int MAX_INT_LEN = 12; // '-'+10dig+'\0' -OR- 0x+8dig
+ static const unsigned int MAX_INSTRUCTION_SET_LEN = 7;
+
+ static const char* PATCHOAT_BIN = "/system/bin/patchoat";
+ if (strlen(instruction_set) >= MAX_INSTRUCTION_SET_LEN) {
+ ALOGE("Instruction set %s longer than max length of %d",
+ instruction_set, MAX_INSTRUCTION_SET_LEN);
+ return;
+ }
+
+ /* input_file_name/input_fd should be the .odex/.oat file that is precompiled. I think*/
+ char instruction_set_arg[strlen("--instruction-set=") + MAX_INSTRUCTION_SET_LEN];
+ char input_oat_fd_arg[strlen("--input-oat-fd=") + MAX_INT_LEN];
+ char input_vdex_fd_arg[strlen("--input-vdex-fd=") + MAX_INT_LEN];
+ char output_oat_fd_arg[strlen("--output-oat-fd=") + MAX_INT_LEN];
+ char output_vdex_fd_arg[strlen("--output-vdex-fd=") + MAX_INT_LEN];
+ const char* patched_image_location_arg = "--patched-image-location=/system/framework/boot.art";
+ // The caller has already gotten all the locks we need.
+ const char* no_lock_arg = "--no-lock-output";
+ sprintf(instruction_set_arg, "--instruction-set=%s", instruction_set);
+ sprintf(output_oat_fd_arg, "--output-oat-fd=%d", out_oat_fd);
+ sprintf(input_oat_fd_arg, "--input-oat-fd=%d", input_oat_fd);
+ ALOGV("Running %s isa=%s in-oat-fd=%d (%s) in-vdex-fd=%d (%s) "
+ "out-oat-fd=%d (%s) out-vdex-fd=%d (%s)\n",
+ PATCHOAT_BIN, instruction_set,
+ input_oat_fd, input_oat_file_name,
+ input_vdex_fd, input_vdex_file_name,
+ out_oat_fd, output_oat_file_name,
+ out_vdex_fd, output_vdex_file_name);
+
+ /* patchoat, patched-image-location, no-lock, isa, input-fd, output-fd */
+ char* argv[9];
+ argv[0] = (char*) PATCHOAT_BIN;
+ argv[1] = (char*) patched_image_location_arg;
+ argv[2] = (char*) no_lock_arg;
+ argv[3] = instruction_set_arg;
+ argv[4] = input_oat_fd_arg;
+ argv[5] = input_vdex_fd_arg;
+ argv[6] = output_oat_fd_arg;
+ argv[7] = output_vdex_fd_arg;
+ argv[8] = NULL;
+
+ execv(PATCHOAT_BIN, (char* const *)argv);
+ ALOGE("execv(%s) failed: %s\n", PATCHOAT_BIN, strerror(errno));
+}
+
+static void run_dex2oat(int zip_fd, int oat_fd, int input_vdex_fd, int output_vdex_fd, int image_fd,
+ const char* input_file_name, const char* output_file_name, int swap_fd,
+ const char *instruction_set, const char* compiler_filter, bool vm_safe_mode,
+ bool debuggable, bool post_bootcomplete, int profile_fd, const char* shared_libraries) {
+ static const unsigned int MAX_INSTRUCTION_SET_LEN = 7;
+
+ if (strlen(instruction_set) >= MAX_INSTRUCTION_SET_LEN) {
+ ALOGE("Instruction set %s longer than max length of %d",
+ instruction_set, MAX_INSTRUCTION_SET_LEN);
+ return;
+ }
+
+ char dex2oat_Xms_flag[kPropertyValueMax];
+ bool have_dex2oat_Xms_flag = get_property("dalvik.vm.dex2oat-Xms", dex2oat_Xms_flag, NULL) > 0;
+
+ char dex2oat_Xmx_flag[kPropertyValueMax];
+ bool have_dex2oat_Xmx_flag = get_property("dalvik.vm.dex2oat-Xmx", dex2oat_Xmx_flag, NULL) > 0;
+
+ char dex2oat_threads_buf[kPropertyValueMax];
+ bool have_dex2oat_threads_flag = get_property(post_bootcomplete
+ ? "dalvik.vm.dex2oat-threads"
+ : "dalvik.vm.boot-dex2oat-threads",
+ dex2oat_threads_buf,
+ NULL) > 0;
+ char dex2oat_threads_arg[kPropertyValueMax + 2];
+ if (have_dex2oat_threads_flag) {
+ sprintf(dex2oat_threads_arg, "-j%s", dex2oat_threads_buf);
+ }
+
+ char dex2oat_isa_features_key[kPropertyKeyMax];
+ sprintf(dex2oat_isa_features_key, "dalvik.vm.isa.%s.features", instruction_set);
+ char dex2oat_isa_features[kPropertyValueMax];
+ bool have_dex2oat_isa_features = get_property(dex2oat_isa_features_key,
+ dex2oat_isa_features, NULL) > 0;
+
+ char dex2oat_isa_variant_key[kPropertyKeyMax];
+ sprintf(dex2oat_isa_variant_key, "dalvik.vm.isa.%s.variant", instruction_set);
+ char dex2oat_isa_variant[kPropertyValueMax];
+ bool have_dex2oat_isa_variant = get_property(dex2oat_isa_variant_key,
+ dex2oat_isa_variant, NULL) > 0;
+
+ const char *dex2oat_norelocation = "-Xnorelocate";
+ bool have_dex2oat_relocation_skip_flag = false;
+
+ char dex2oat_flags[kPropertyValueMax];
+ int dex2oat_flags_count = get_property("dalvik.vm.dex2oat-flags",
+ dex2oat_flags, NULL) <= 0 ? 0 : split_count(dex2oat_flags);
+ ALOGV("dalvik.vm.dex2oat-flags=%s\n", dex2oat_flags);
+
+ // If we booting without the real /data, don't spend time compiling.
+ char vold_decrypt[kPropertyValueMax];
+ bool have_vold_decrypt = get_property("vold.decrypt", vold_decrypt, "") > 0;
+ bool skip_compilation = (have_vold_decrypt &&
+ (strcmp(vold_decrypt, "trigger_restart_min_framework") == 0 ||
+ (strcmp(vold_decrypt, "1") == 0)));
+
+ bool generate_debug_info = property_get_bool("debug.generate-debug-info");
+
+ char app_image_format[kPropertyValueMax];
+ char image_format_arg[strlen("--image-format=") + kPropertyValueMax];
+ bool have_app_image_format =
+ image_fd >= 0 && get_property("dalvik.vm.appimageformat", app_image_format, NULL) > 0;
+ if (have_app_image_format) {
+ sprintf(image_format_arg, "--image-format=%s", app_image_format);
+ }
+
+ char dex2oat_large_app_threshold[kPropertyValueMax];
+ bool have_dex2oat_large_app_threshold =
+ get_property("dalvik.vm.dex2oat-very-large", dex2oat_large_app_threshold, NULL) > 0;
+ char dex2oat_large_app_threshold_arg[strlen("--very-large-app-threshold=") + kPropertyValueMax];
+ if (have_dex2oat_large_app_threshold) {
+ sprintf(dex2oat_large_app_threshold_arg,
+ "--very-large-app-threshold=%s",
+ dex2oat_large_app_threshold);
+ }
+
+ static const char* DEX2OAT_BIN = "/system/bin/dex2oat";
+
+ static const char* RUNTIME_ARG = "--runtime-arg";
+
+ static const int MAX_INT_LEN = 12; // '-'+10dig+'\0' -OR- 0x+8dig
+
+ char zip_fd_arg[strlen("--zip-fd=") + MAX_INT_LEN];
+ char zip_location_arg[strlen("--zip-location=") + PKG_PATH_MAX];
+ char input_vdex_fd_arg[strlen("--input-vdex-fd=") + MAX_INT_LEN];
+ char output_vdex_fd_arg[strlen("--output-vdex-fd=") + MAX_INT_LEN];
+ char oat_fd_arg[strlen("--oat-fd=") + MAX_INT_LEN];
+ char oat_location_arg[strlen("--oat-location=") + PKG_PATH_MAX];
+ char instruction_set_arg[strlen("--instruction-set=") + MAX_INSTRUCTION_SET_LEN];
+ char instruction_set_variant_arg[strlen("--instruction-set-variant=") + kPropertyValueMax];
+ char instruction_set_features_arg[strlen("--instruction-set-features=") + kPropertyValueMax];
+ char dex2oat_Xms_arg[strlen("-Xms") + kPropertyValueMax];
+ char dex2oat_Xmx_arg[strlen("-Xmx") + kPropertyValueMax];
+ char dex2oat_compiler_filter_arg[strlen("--compiler-filter=") + kPropertyValueMax];
+ bool have_dex2oat_swap_fd = false;
+ char dex2oat_swap_fd[strlen("--swap-fd=") + MAX_INT_LEN];
+ bool have_dex2oat_image_fd = false;
+ char dex2oat_image_fd[strlen("--app-image-fd=") + MAX_INT_LEN];
+
+ sprintf(zip_fd_arg, "--zip-fd=%d", zip_fd);
+ sprintf(zip_location_arg, "--zip-location=%s", input_file_name);
+ sprintf(input_vdex_fd_arg, "--input-vdex-fd=%d", input_vdex_fd);
+ sprintf(output_vdex_fd_arg, "--output-vdex-fd=%d", output_vdex_fd);
+ sprintf(oat_fd_arg, "--oat-fd=%d", oat_fd);
+ sprintf(oat_location_arg, "--oat-location=%s", output_file_name);
+ sprintf(instruction_set_arg, "--instruction-set=%s", instruction_set);
+ sprintf(instruction_set_variant_arg, "--instruction-set-variant=%s", dex2oat_isa_variant);
+ sprintf(instruction_set_features_arg, "--instruction-set-features=%s", dex2oat_isa_features);
+ if (swap_fd >= 0) {
+ have_dex2oat_swap_fd = true;
+ sprintf(dex2oat_swap_fd, "--swap-fd=%d", swap_fd);
+ }
+ if (image_fd >= 0) {
+ have_dex2oat_image_fd = true;
+ sprintf(dex2oat_image_fd, "--app-image-fd=%d", image_fd);
+ }
+
+ if (have_dex2oat_Xms_flag) {
+ sprintf(dex2oat_Xms_arg, "-Xms%s", dex2oat_Xms_flag);
+ }
+ if (have_dex2oat_Xmx_flag) {
+ sprintf(dex2oat_Xmx_arg, "-Xmx%s", dex2oat_Xmx_flag);
+ }
+
+ // Compute compiler filter.
+
+ bool have_dex2oat_compiler_filter_flag;
+ if (skip_compilation) {
+ strcpy(dex2oat_compiler_filter_arg, "--compiler-filter=verify-none");
+ have_dex2oat_compiler_filter_flag = true;
+ have_dex2oat_relocation_skip_flag = true;
+ } else if (vm_safe_mode) {
+ strcpy(dex2oat_compiler_filter_arg, "--compiler-filter=interpret-only");
+ have_dex2oat_compiler_filter_flag = true;
+ } else if (compiler_filter != nullptr &&
+ strlen(compiler_filter) + strlen("--compiler-filter=") <
+ arraysize(dex2oat_compiler_filter_arg)) {
+ sprintf(dex2oat_compiler_filter_arg, "--compiler-filter=%s", compiler_filter);
+ have_dex2oat_compiler_filter_flag = true;
+ } else {
+ char dex2oat_compiler_filter_flag[kPropertyValueMax];
+ have_dex2oat_compiler_filter_flag = get_property("dalvik.vm.dex2oat-filter",
+ dex2oat_compiler_filter_flag, NULL) > 0;
+ if (have_dex2oat_compiler_filter_flag) {
+ sprintf(dex2oat_compiler_filter_arg,
+ "--compiler-filter=%s",
+ dex2oat_compiler_filter_flag);
+ }
+ }
+
+ // Check whether all apps should be compiled debuggable.
+ if (!debuggable) {
+ char prop_buf[kPropertyValueMax];
+ debuggable =
+ (get_property("dalvik.vm.always_debuggable", prop_buf, "0") > 0) &&
+ (prop_buf[0] == '1');
+ }
+ char profile_arg[strlen("--profile-file-fd=") + MAX_INT_LEN];
+ if (profile_fd != -1) {
+ sprintf(profile_arg, "--profile-file-fd=%d", profile_fd);
+ }
+
+
+ ALOGV("Running %s in=%s out=%s\n", DEX2OAT_BIN, input_file_name, output_file_name);
+
+ const char* argv[9 // program name, mandatory arguments and the final NULL
+ + (have_dex2oat_isa_variant ? 1 : 0)
+ + (have_dex2oat_isa_features ? 1 : 0)
+ + (have_dex2oat_Xms_flag ? 2 : 0)
+ + (have_dex2oat_Xmx_flag ? 2 : 0)
+ + (have_dex2oat_compiler_filter_flag ? 1 : 0)
+ + (have_dex2oat_threads_flag ? 1 : 0)
+ + (have_dex2oat_swap_fd ? 1 : 0)
+ + (have_dex2oat_image_fd ? 1 : 0)
+ + (have_dex2oat_relocation_skip_flag ? 2 : 0)
+ + (generate_debug_info ? 1 : 0)
+ + (debuggable ? 1 : 0)
+ + (have_app_image_format ? 1 : 0)
+ + dex2oat_flags_count
+ + (profile_fd == -1 ? 0 : 1)
+ + (shared_libraries != nullptr ? 4 : 0)
+ + (have_dex2oat_large_app_threshold ? 1 : 0)];
+ int i = 0;
+ argv[i++] = DEX2OAT_BIN;
+ argv[i++] = zip_fd_arg;
+ argv[i++] = zip_location_arg;
+ argv[i++] = input_vdex_fd_arg;
+ argv[i++] = output_vdex_fd_arg;
+ argv[i++] = oat_fd_arg;
+ argv[i++] = oat_location_arg;
+ argv[i++] = instruction_set_arg;
+ if (have_dex2oat_isa_variant) {
+ argv[i++] = instruction_set_variant_arg;
+ }
+ if (have_dex2oat_isa_features) {
+ argv[i++] = instruction_set_features_arg;
+ }
+ if (have_dex2oat_Xms_flag) {
+ argv[i++] = RUNTIME_ARG;
+ argv[i++] = dex2oat_Xms_arg;
+ }
+ if (have_dex2oat_Xmx_flag) {
+ argv[i++] = RUNTIME_ARG;
+ argv[i++] = dex2oat_Xmx_arg;
+ }
+ if (have_dex2oat_compiler_filter_flag) {
+ argv[i++] = dex2oat_compiler_filter_arg;
+ }
+ if (have_dex2oat_threads_flag) {
+ argv[i++] = dex2oat_threads_arg;
+ }
+ if (have_dex2oat_swap_fd) {
+ argv[i++] = dex2oat_swap_fd;
+ }
+ if (have_dex2oat_image_fd) {
+ argv[i++] = dex2oat_image_fd;
+ }
+ if (generate_debug_info) {
+ argv[i++] = "--generate-debug-info";
+ }
+ if (debuggable) {
+ argv[i++] = "--debuggable";
+ }
+ if (have_app_image_format) {
+ argv[i++] = image_format_arg;
+ }
+ if (have_dex2oat_large_app_threshold) {
+ argv[i++] = dex2oat_large_app_threshold_arg;
+ }
+ if (dex2oat_flags_count) {
+ i += split(dex2oat_flags, argv + i);
+ }
+ if (have_dex2oat_relocation_skip_flag) {
+ argv[i++] = RUNTIME_ARG;
+ argv[i++] = dex2oat_norelocation;
+ }
+ if (profile_fd != -1) {
+ argv[i++] = profile_arg;
+ }
+ if (shared_libraries != nullptr) {
+ argv[i++] = RUNTIME_ARG;
+ argv[i++] = "-classpath";
+ argv[i++] = RUNTIME_ARG;
+ argv[i++] = shared_libraries;
+ }
+ // Do not add after dex2oat_flags, they should override others for debugging.
+ argv[i] = NULL;
+
+ execv(DEX2OAT_BIN, (char * const *)argv);
+ ALOGE("execv(%s) failed: %s\n", DEX2OAT_BIN, strerror(errno));
+}
+
+/*
+ * Whether dexopt should use a swap file when compiling an APK.
+ *
+ * If kAlwaysProvideSwapFile, do this on all devices (dex2oat will make a more informed decision
+ * itself, anyways).
+ *
+ * Otherwise, read "dalvik.vm.dex2oat-swap". If the property exists, return whether it is "true".
+ *
+ * Otherwise, return true if this is a low-mem device.
+ *
+ * Otherwise, return default value.
+ */
+static bool kAlwaysProvideSwapFile = false;
+static bool kDefaultProvideSwapFile = true;
+
+static bool ShouldUseSwapFileForDexopt() {
+ if (kAlwaysProvideSwapFile) {
+ return true;
+ }
+
+ // Check the "override" property. If it exists, return value == "true".
+ char dex2oat_prop_buf[kPropertyValueMax];
+ if (get_property("dalvik.vm.dex2oat-swap", dex2oat_prop_buf, "") > 0) {
+ if (strcmp(dex2oat_prop_buf, "true") == 0) {
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+ // Shortcut for default value. This is an implementation optimization for the process sketched
+ // above. If the default value is true, we can avoid to check whether this is a low-mem device,
+ // as low-mem is never returning false. The compiler will optimize this away if it can.
+ if (kDefaultProvideSwapFile) {
+ return true;
+ }
+
+ bool is_low_mem = property_get_bool("ro.config.low_ram");
+ if (is_low_mem) {
+ return true;
+ }
+
+ // Default value must be false here.
+ return kDefaultProvideSwapFile;
+}
+
+static void SetDex2OatAndPatchOatScheduling(bool set_to_bg) {
+ if (set_to_bg) {
+ if (set_sched_policy(0, SP_BACKGROUND) < 0) {
+ ALOGE("set_sched_policy failed: %s\n", strerror(errno));
+ exit(70);
+ }
+ if (setpriority(PRIO_PROCESS, 0, ANDROID_PRIORITY_BACKGROUND) < 0) {
+ ALOGE("setpriority failed: %s\n", strerror(errno));
+ exit(71);
+ }
+ }
+}
+
+static void close_all_fds(const std::vector<fd_t>& fds, const char* description) {
+ for (size_t i = 0; i < fds.size(); i++) {
+ if (close(fds[i]) != 0) {
+ PLOG(WARNING) << "Failed to close fd for " << description << " at index " << i;
+ }
+ }
+}
+
+static fd_t open_profile_dir(const std::string& profile_dir) {
+ fd_t profile_dir_fd = TEMP_FAILURE_RETRY(open(profile_dir.c_str(),
+ O_PATH | O_CLOEXEC | O_DIRECTORY | O_NOFOLLOW));
+ if (profile_dir_fd < 0) {
+ // In a multi-user environment, these directories can be created at
+ // different points and it's possible we'll attempt to open a profile
+ // dir before it exists.
+ if (errno != ENOENT) {
+ PLOG(ERROR) << "Failed to open profile_dir: " << profile_dir;
+ }
+ }
+ return profile_dir_fd;
+}
+
+static fd_t open_primary_profile_file_from_dir(const std::string& profile_dir, mode_t open_mode) {
+ fd_t profile_dir_fd = open_profile_dir(profile_dir);
+ if (profile_dir_fd < 0) {
+ return -1;
+ }
+
+ fd_t profile_fd = -1;
+ std::string profile_file = create_primary_profile(profile_dir);
+
+ profile_fd = TEMP_FAILURE_RETRY(open(profile_file.c_str(), open_mode | O_NOFOLLOW));
+ if (profile_fd == -1) {
+ // It's not an error if the profile file does not exist.
+ if (errno != ENOENT) {
+ PLOG(ERROR) << "Failed to lstat profile_dir: " << profile_dir;
+ }
+ }
+ // TODO(calin): use AutoCloseFD instead of closing the fd manually.
+ if (close(profile_dir_fd) != 0) {
+ PLOG(WARNING) << "Could not close profile dir " << profile_dir;
+ }
+ return profile_fd;
+}
+
+static fd_t open_primary_profile_file(userid_t user, const char* pkgname) {
+ std::string profile_dir = create_data_user_profile_package_path(user, pkgname);
+ return open_primary_profile_file_from_dir(profile_dir, O_RDONLY);
+}
+
+static fd_t open_reference_profile(uid_t uid, const char* pkgname, bool read_write) {
+ std::string reference_profile_dir = create_data_ref_profile_package_path(pkgname);
+ int flags = read_write ? O_RDWR | O_CREAT : O_RDONLY;
+ fd_t fd = open_primary_profile_file_from_dir(reference_profile_dir, flags);
+ if (fd < 0) {
+ return -1;
+ }
+ if (read_write) {
+ // Fix the owner.
+ if (fchown(fd, uid, uid) < 0) {
+ close(fd);
+ return -1;
+ }
+ }
+ return fd;
+}
+
+static void open_profile_files(uid_t uid, const char* pkgname,
+ /*out*/ std::vector<fd_t>* profiles_fd, /*out*/ fd_t* reference_profile_fd) {
+ // Open the reference profile in read-write mode as profman might need to save the merge.
+ *reference_profile_fd = open_reference_profile(uid, pkgname, /*read_write*/ true);
+ if (*reference_profile_fd < 0) {
+ // We can't access the reference profile file.
+ return;
+ }
+
+ std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr);
+ for (auto user : users) {
+ fd_t profile_fd = open_primary_profile_file(user, pkgname);
+ // Add to the lists only if both fds are valid.
+ if (profile_fd >= 0) {
+ profiles_fd->push_back(profile_fd);
+ }
+ }
+}
+
+static void drop_capabilities(uid_t uid) {
+ if (setgid(uid) != 0) {
+ ALOGE("setgid(%d) failed in installd during dexopt\n", uid);
+ exit(64);
+ }
+ if (setuid(uid) != 0) {
+ ALOGE("setuid(%d) failed in installd during dexopt\n", uid);
+ exit(65);
+ }
+ // drop capabilities
+ struct __user_cap_header_struct capheader;
+ struct __user_cap_data_struct capdata[2];
+ memset(&capheader, 0, sizeof(capheader));
+ memset(&capdata, 0, sizeof(capdata));
+ capheader.version = _LINUX_CAPABILITY_VERSION_3;
+ if (capset(&capheader, &capdata[0]) < 0) {
+ ALOGE("capset failed: %s\n", strerror(errno));
+ exit(66);
+ }
+}
+
+static constexpr int PROFMAN_BIN_RETURN_CODE_COMPILE = 0;
+static constexpr int PROFMAN_BIN_RETURN_CODE_SKIP_COMPILATION = 1;
+static constexpr int PROFMAN_BIN_RETURN_CODE_BAD_PROFILES = 2;
+static constexpr int PROFMAN_BIN_RETURN_CODE_ERROR_IO = 3;
+static constexpr int PROFMAN_BIN_RETURN_CODE_ERROR_LOCKING = 4;
+
+static void run_profman_merge(const std::vector<fd_t>& profiles_fd, fd_t reference_profile_fd) {
+ static const size_t MAX_INT_LEN = 32;
+ static const char* PROFMAN_BIN = "/system/bin/profman";
+
+ std::vector<std::string> profile_args(profiles_fd.size());
+ char profile_buf[strlen("--profile-file-fd=") + MAX_INT_LEN];
+ for (size_t k = 0; k < profiles_fd.size(); k++) {
+ sprintf(profile_buf, "--profile-file-fd=%d", profiles_fd[k]);
+ profile_args[k].assign(profile_buf);
+ }
+ char reference_profile_arg[strlen("--reference-profile-file-fd=") + MAX_INT_LEN];
+ sprintf(reference_profile_arg, "--reference-profile-file-fd=%d", reference_profile_fd);
+
+ // program name, reference profile fd, the final NULL and the profile fds
+ const char* argv[3 + profiles_fd.size()];
+ int i = 0;
+ argv[i++] = PROFMAN_BIN;
+ argv[i++] = reference_profile_arg;
+ for (size_t k = 0; k < profile_args.size(); k++) {
+ argv[i++] = profile_args[k].c_str();
+ }
+ // Do not add after dex2oat_flags, they should override others for debugging.
+ argv[i] = NULL;
+
+ execv(PROFMAN_BIN, (char * const *)argv);
+ ALOGE("execv(%s) failed: %s\n", PROFMAN_BIN, strerror(errno));
+ exit(68); /* only get here on exec failure */
+}
+
+// Decides if profile guided compilation is needed or not based on existing profiles.
+// Returns true if there is enough information in the current profiles that worth
+// a re-compilation of the package.
+// If the return value is true all the current profiles would have been merged into
+// the reference profiles accessible with open_reference_profile().
+static bool analyse_profiles(uid_t uid, const char* pkgname) {
+ std::vector<fd_t> profiles_fd;
+ fd_t reference_profile_fd = -1;
+ open_profile_files(uid, pkgname, &profiles_fd, &reference_profile_fd);
+ if (profiles_fd.empty() || (reference_profile_fd == -1)) {
+ // Skip profile guided compilation because no profiles were found.
+ // Or if the reference profile info couldn't be opened.
+ close_all_fds(profiles_fd, "profiles_fd");
+ if ((reference_profile_fd != - 1) && (close(reference_profile_fd) != 0)) {
+ PLOG(WARNING) << "Failed to close fd for reference profile";
+ }
+ return false;
+ }
+
+ ALOGV("PROFMAN (MERGE): --- BEGIN '%s' ---\n", pkgname);
+
+ pid_t pid = fork();
+ if (pid == 0) {
+ /* child -- drop privileges before continuing */
+ drop_capabilities(uid);
+ run_profman_merge(profiles_fd, reference_profile_fd);
+ exit(68); /* only get here on exec failure */
+ }
+ /* parent */
+ int return_code = wait_child(pid);
+ bool need_to_compile = false;
+ bool should_clear_current_profiles = false;
+ bool should_clear_reference_profile = false;
+ if (!WIFEXITED(return_code)) {
+ LOG(WARNING) << "profman failed for package " << pkgname << ": " << return_code;
+ } else {
+ return_code = WEXITSTATUS(return_code);
+ switch (return_code) {
+ case PROFMAN_BIN_RETURN_CODE_COMPILE:
+ need_to_compile = true;
+ should_clear_current_profiles = true;
+ should_clear_reference_profile = false;
+ break;
+ case PROFMAN_BIN_RETURN_CODE_SKIP_COMPILATION:
+ need_to_compile = false;
+ should_clear_current_profiles = false;
+ should_clear_reference_profile = false;
+ break;
+ case PROFMAN_BIN_RETURN_CODE_BAD_PROFILES:
+ LOG(WARNING) << "Bad profiles for package " << pkgname;
+ need_to_compile = false;
+ should_clear_current_profiles = true;
+ should_clear_reference_profile = true;
+ break;
+ case PROFMAN_BIN_RETURN_CODE_ERROR_IO: // fall-through
+ case PROFMAN_BIN_RETURN_CODE_ERROR_LOCKING:
+ // Temporary IO problem (e.g. locking). Ignore but log a warning.
+ LOG(WARNING) << "IO error while reading profiles for package " << pkgname;
+ need_to_compile = false;
+ should_clear_current_profiles = false;
+ should_clear_reference_profile = false;
+ break;
+ default:
+ // Unknown return code or error. Unlink profiles.
+ LOG(WARNING) << "Unknown error code while processing profiles for package " << pkgname
+ << ": " << return_code;
+ need_to_compile = false;
+ should_clear_current_profiles = true;
+ should_clear_reference_profile = true;
+ break;
+ }
+ }
+ close_all_fds(profiles_fd, "profiles_fd");
+ if (close(reference_profile_fd) != 0) {
+ PLOG(WARNING) << "Failed to close fd for reference profile";
+ }
+ if (should_clear_current_profiles) {
+ clear_current_profiles(pkgname);
+ }
+ if (should_clear_reference_profile) {
+ clear_reference_profile(pkgname);
+ }
+ return need_to_compile;
+}
+
+static void run_profman_dump(const std::vector<fd_t>& profile_fds,
+ fd_t reference_profile_fd,
+ const std::vector<std::string>& dex_locations,
+ const std::vector<fd_t>& apk_fds,
+ fd_t output_fd) {
+ std::vector<std::string> profman_args;
+ static const char* PROFMAN_BIN = "/system/bin/profman";
+ profman_args.push_back(PROFMAN_BIN);
+ profman_args.push_back("--dump-only");
+ profman_args.push_back(StringPrintf("--dump-output-to-fd=%d", output_fd));
+ if (reference_profile_fd != -1) {
+ profman_args.push_back(StringPrintf("--reference-profile-file-fd=%d",
+ reference_profile_fd));
+ }
+ for (fd_t profile_fd : profile_fds) {
+ profman_args.push_back(StringPrintf("--profile-file-fd=%d", profile_fd));
+ }
+ for (const std::string& dex_location : dex_locations) {
+ profman_args.push_back(StringPrintf("--dex-location=%s", dex_location.c_str()));
+ }
+ for (fd_t apk_fd : apk_fds) {
+ profman_args.push_back(StringPrintf("--apk-fd=%d", apk_fd));
+ }
+ const char **argv = new const char*[profman_args.size() + 1];
+ size_t i = 0;
+ for (const std::string& profman_arg : profman_args) {
+ argv[i++] = profman_arg.c_str();
+ }
+ argv[i] = NULL;
+
+ execv(PROFMAN_BIN, (char * const *)argv);
+ ALOGE("execv(%s) failed: %s\n", PROFMAN_BIN, strerror(errno));
+ exit(68); /* only get here on exec failure */
+}
+
+static const char* get_location_from_path(const char* path) {
+ static constexpr char kLocationSeparator = '/';
+ const char *location = strrchr(path, kLocationSeparator);
+ if (location == NULL) {
+ return path;
+ } else {
+ // Skip the separator character.
+ return location + 1;
+ }
+}
+
+// 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& codePaths, bool* _aidl_return) {
+ ENFORCE_UID(AID_SYSTEM);
+
+ const char* pkgname = packageName.c_str();
+ const char* code_path_string = codePaths.c_str();
+
+ std::vector<fd_t> profile_fds;
+ fd_t reference_profile_fd = -1;
+ std::string out_file_name = StringPrintf("/data/misc/profman/%s.txt", pkgname);
+
+ ALOGV("PROFMAN (DUMP): --- BEGIN '%s' ---\n", pkgname);
+
+ open_profile_files(uid, pkgname, &profile_fds, &reference_profile_fd);
+
+ const bool has_reference_profile = (reference_profile_fd != -1);
+ const bool has_profiles = !profile_fds.empty();
+
+ if (!has_reference_profile && !has_profiles) {
+ ALOGE("profman dump: no profiles to dump for '%s'", pkgname);
+ *_aidl_return = false;
+ return binder::Status::ok();
+ }
+
+ fd_t output_fd = open(out_file_name.c_str(), O_WRONLY | O_CREAT | O_TRUNC | O_NOFOLLOW);
+ if (fchmod(output_fd, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH) < 0) {
+ ALOGE("installd cannot chmod '%s' dump_profile\n", out_file_name.c_str());
+ *_aidl_return = false;
+ return binder::Status::ok();
+ }
+ std::vector<std::string> code_full_paths = base::Split(code_path_string, ";");
+ std::vector<std::string> dex_locations;
+ std::vector<fd_t> apk_fds;
+ for (const std::string& code_full_path : code_full_paths) {
+ const char* full_path = code_full_path.c_str();
+ fd_t apk_fd = open(full_path, O_RDONLY | O_NOFOLLOW);
+ if (apk_fd == -1) {
+ ALOGE("installd cannot open '%s'\n", full_path);
+ *_aidl_return = false;
+ return binder::Status::ok();
+ }
+ dex_locations.push_back(get_location_from_path(full_path));
+ apk_fds.push_back(apk_fd);
+ }
+
+ pid_t pid = fork();
+ if (pid == 0) {
+ /* child -- drop privileges before continuing */
+ drop_capabilities(uid);
+ run_profman_dump(profile_fds, reference_profile_fd, dex_locations,
+ apk_fds, output_fd);
+ exit(68); /* only get here on exec failure */
+ }
+ /* parent */
+ close_all_fds(apk_fds, "apk_fds");
+ close_all_fds(profile_fds, "profile_fds");
+ if (close(reference_profile_fd) != 0) {
+ PLOG(WARNING) << "Failed to close fd for reference profile";
+ }
+ int return_code = wait_child(pid);
+ if (!WIFEXITED(return_code)) {
+ LOG(WARNING) << "profman failed for package " << pkgname << ": "
+ << return_code;
+ *_aidl_return = false;
+ return binder::Status::ok();
+ }
+ *_aidl_return = true;
+ return binder::Status::ok();
+}
+
+static std::string replace_file_extension(const std::string& oat_path, const std::string& new_ext) {
+ // A standard dalvik-cache entry. Replace ".dex" with `new_ext`.
+ if (EndsWith(oat_path, ".dex")) {
+ std::string new_path = oat_path;
+ new_path.replace(new_path.length() - strlen(".dex"), strlen(".dex"), new_ext);
+ CHECK(EndsWith(new_path, new_ext.c_str()));
+ return new_path;
+ }
+
+ // An odex entry. Not that this may not be an extension, e.g., in the OTA
+ // case (where the base name will have an extension for the B artifact).
+ size_t odex_pos = oat_path.rfind(".odex");
+ if (odex_pos != std::string::npos) {
+ std::string new_path = oat_path;
+ new_path.replace(odex_pos, strlen(".odex"), new_ext);
+ CHECK_NE(new_path.find(new_ext), std::string::npos);
+ return new_path;
+ }
+
+ // Don't know how to handle this.
+ return "";
+}
+
+// Translate the given oat path to an art (app image) path. An empty string
+// denotes an error.
+static std::string create_image_filename(const std::string& oat_path) {
+ return replace_file_extension(oat_path, ".art");
+}
+
+// Translate the given oat path to a vdex path. An empty string denotes an error.
+static std::string create_vdex_filename(const std::string& oat_path) {
+ return replace_file_extension(oat_path, ".vdex");
+}
+
+static bool add_extension_to_file_name(char* file_name, const char* extension) {
+ if (strlen(file_name) + strlen(extension) + 1 > PKG_PATH_MAX) {
+ return false;
+ }
+ strcat(file_name, extension);
+ return true;
+}
+
+static int open_output_file(const char* file_name, bool recreate, int permissions) {
+ int flags = O_RDWR | O_CREAT;
+ if (recreate) {
+ if (unlink(file_name) < 0) {
+ if (errno != ENOENT) {
+ PLOG(ERROR) << "open_output_file: Couldn't unlink " << file_name;
+ }
+ }
+ flags |= O_EXCL;
+ }
+ return open(file_name, flags, permissions);
+}
+
+static bool set_permissions_and_ownership(int fd, bool is_public, int uid, const char* path) {
+ if (fchmod(fd,
+ S_IRUSR|S_IWUSR|S_IRGRP |
+ (is_public ? S_IROTH : 0)) < 0) {
+ ALOGE("installd cannot chmod '%s' during dexopt\n", path);
+ return false;
+ } else if (fchown(fd, AID_SYSTEM, uid) < 0) {
+ ALOGE("installd cannot chown '%s' during dexopt\n", path);
+ return false;
+ }
+ return true;
+}
+
+static bool IsOutputDalvikCache(const char* oat_dir) {
+ // InstallerConnection.java (which invokes installd) transforms Java null arguments
+ // into '!'. Play it safe by handling it both.
+ // TODO: ensure we never get null.
+ // TODO: pass a flag instead of inferring if the output is dalvik cache.
+ return oat_dir == nullptr || oat_dir[0] == '!';
+}
+
+static bool create_oat_out_path(const char* apk_path, const char* instruction_set,
+ const char* oat_dir, /*out*/ char* out_oat_path) {
+ // Early best-effort check whether we can fit the the path into our buffers.
+ // Note: the cache path will require an additional 5 bytes for ".swap", but we'll try to run
+ // without a swap file, if necessary. Reference profiles file also add an extra ".prof"
+ // extension to the cache path (5 bytes).
+ if (strlen(apk_path) >= (PKG_PATH_MAX - 8)) {
+ ALOGE("apk_path too long '%s'\n", apk_path);
+ return false;
+ }
+
+ if (!IsOutputDalvikCache(oat_dir)) {
+ if (validate_apk_path(oat_dir)) {
+ ALOGE("cannot validate apk path with oat_dir '%s'\n", oat_dir);
+ return false;
+ }
+ if (!calculate_oat_file_path(out_oat_path, oat_dir, apk_path, instruction_set)) {
+ return false;
+ }
+ } else {
+ if (!create_cache_path(out_oat_path, apk_path, instruction_set)) {
+ return false;
+ }
+ }
+ return true;
+}
+
+// TODO: Consider returning error codes.
+binder::Status InstalldNativeService::mergeProfiles(int32_t uid, const std::string& packageName,
+ bool* _aidl_return) {
+ ENFORCE_UID(AID_SYSTEM);
+ const char* pkgname = packageName.c_str();
+ *_aidl_return = analyse_profiles(uid, pkgname);
+ return binder::Status::ok();
+}
+
+// Helper for fd management. This is similar to a unique_fd in that it closes the file descriptor
+// on destruction. It will also run the given cleanup (unless told not to) after closing.
+//
+// Usage example:
+//
+// Dex2oatFileWrapper<std::function<void ()>> file(open(...),
+// [name]() {
+// unlink(name.c_str());
+// });
+// // Note: care needs to be taken about name, as it needs to have a lifetime longer than the
+// wrapper if captured as a reference.
+//
+// if (file.get() == -1) {
+// // Error opening...
+// }
+//
+// ...
+// if (error) {
+// // At this point, when the Dex2oatFileWrapper is destructed, the cleanup function will run
+// // and delete the file (after the fd is closed).
+// return -1;
+// }
+//
+// (Success case)
+// file.SetCleanup(false);
+// // At this point, when the Dex2oatFileWrapper is destructed, the cleanup function will not run
+// // (leaving the file around; after the fd is closed).
+//
+template <typename Cleanup>
+class Dex2oatFileWrapper {
+ public:
+ Dex2oatFileWrapper() : value_(-1), cleanup_(), do_cleanup_(true) {
+ }
+
+ Dex2oatFileWrapper(int value, Cleanup cleanup)
+ : value_(value), cleanup_(cleanup), do_cleanup_(true) {}
+
+ ~Dex2oatFileWrapper() {
+ reset(-1);
+ }
+
+ int get() {
+ return value_;
+ }
+
+ void SetCleanup(bool cleanup) {
+ do_cleanup_ = cleanup;
+ }
+
+ void reset(int new_value) {
+ if (value_ >= 0) {
+ close(value_);
+ }
+ if (do_cleanup_ && cleanup_ != nullptr) {
+ cleanup_();
+ }
+
+ value_ = new_value;
+ }
+
+ void reset(int new_value, Cleanup new_cleanup) {
+ if (value_ >= 0) {
+ close(value_);
+ }
+ if (do_cleanup_ && cleanup_ != nullptr) {
+ cleanup_();
+ }
+
+ value_ = new_value;
+ cleanup_ = new_cleanup;
+ }
+
+ private:
+ int value_;
+ Cleanup cleanup_;
+ bool do_cleanup_;
+};
+
+// TODO: eventually move dexopt() implementation into dexopt.cpp
+int dexopt(const char* apk_path, uid_t uid, const char* pkgname, const char* instruction_set,
+ int dexopt_needed, const char* oat_dir, int dexopt_flags,const char* compiler_filter,
+ const char* volume_uuid ATTRIBUTE_UNUSED, const char* shared_libraries) {
+ bool is_public = ((dexopt_flags & DEXOPT_PUBLIC) != 0);
+ bool vm_safe_mode = (dexopt_flags & DEXOPT_SAFEMODE) != 0;
+ bool debuggable = (dexopt_flags & DEXOPT_DEBUGGABLE) != 0;
+ bool boot_complete = (dexopt_flags & DEXOPT_BOOTCOMPLETE) != 0;
+ bool profile_guided = (dexopt_flags & DEXOPT_PROFILE_GUIDED) != 0;
+
+ CHECK(pkgname != nullptr);
+ CHECK(pkgname[0] != 0);
+
+ // Public apps should not be compiled with profile information ever. Same goes for the special
+ // package '*' used for the system server.
+ Dex2oatFileWrapper<std::function<void ()>> reference_profile_fd;
+ if (!is_public && pkgname[0] != '*') {
+ // Open reference profile in read only mode as dex2oat does not get write permissions.
+ const std::string pkgname_str(pkgname);
+ reference_profile_fd.reset(open_reference_profile(uid, pkgname, /*read_write*/ false),
+ [pkgname_str]() {
+ clear_reference_profile(pkgname_str.c_str());
+ });
+ // Note: it's OK to not find a profile here.
+ }
+
+ if ((dexopt_flags & ~DEXOPT_MASK) != 0) {
+ LOG_FATAL("dexopt flags contains unknown fields\n");
+ }
+
+ char out_oat_path[PKG_PATH_MAX];
+ if (!create_oat_out_path(apk_path, instruction_set, oat_dir, out_oat_path)) {
+ return false;
+ }
+
+ const char *input_file;
+ char in_odex_path[PKG_PATH_MAX];
+ int dexopt_action = abs(dexopt_needed);
+ bool is_odex_location = dexopt_needed < 0;
+ switch (dexopt_action) {
+ case DEX2OAT_FROM_SCRATCH:
+ case DEX2OAT_FOR_BOOT_IMAGE:
+ case DEX2OAT_FOR_FILTER:
+ case DEX2OAT_FOR_RELOCATION:
+ input_file = apk_path;
+ break;
+
+ case PATCHOAT_FOR_RELOCATION:
+ if (is_odex_location) {
+ if (!calculate_odex_file_path(in_odex_path, apk_path, instruction_set)) {
+ return -1;
+ }
+ input_file = in_odex_path;
+ } else {
+ input_file = out_oat_path;
+ }
+ break;
+
+ default:
+ ALOGE("Invalid dexopt needed: %d\n", dexopt_needed);
+ return 72;
+ }
+
+ struct stat input_stat;
+ memset(&input_stat, 0, sizeof(input_stat));
+ stat(input_file, &input_stat);
+
+ // Open the input file. If running dex2oat, `input_file` is the APK. If running
+ // patchoat, it is the OAT file to be relocated.
+ base::unique_fd input_fd(open(input_file, O_RDONLY, 0));
+ if (input_fd.get() < 0) {
+ ALOGE("installd cannot open '%s' for input during dexopt\n", input_file);
+ return -1;
+ }
+
+ // Create the output OAT file.
+ const std::string out_oat_path_str(out_oat_path);
+ Dex2oatFileWrapper<std::function<void ()>> out_oat_fd(
+ open_output_file(out_oat_path, /*recreate*/true, /*permissions*/0644),
+ [out_oat_path_str]() { unlink(out_oat_path_str.c_str()); });
+ if (out_oat_fd.get() < 0) {
+ ALOGE("installd cannot open '%s' for output during dexopt\n", out_oat_path);
+ return -1;
+ }
+ if (!set_permissions_and_ownership(out_oat_fd.get(), is_public, uid, out_oat_path)) {
+ return -1;
+ }
+
+ // Open the existing VDEX. We do this before creating the new output VDEX, which will
+ // unlink the old one.
+ base::unique_fd in_vdex_fd;
+ std::string in_vdex_path_str;
+ if (dexopt_action == PATCHOAT_FOR_RELOCATION) {
+ // `input_file` is the OAT file to be relocated. The VDEX has to be there as well.
+ in_vdex_path_str = create_vdex_filename(input_file);
+ if (in_vdex_path_str.empty()) {
+ ALOGE("installd cannot compute input vdex location for '%s'\n", input_file);
+ return -1;
+ }
+ in_vdex_fd.reset(open(in_vdex_path_str.c_str(), O_RDONLY, 0));
+ if (in_vdex_fd.get() < 0) {
+ ALOGE("installd cannot open '%s' for input during dexopt: %s\n",
+ in_vdex_path_str.c_str(), strerror(errno));
+ return -1;
+ }
+ } else if (dexopt_action != DEX2OAT_FROM_SCRATCH) {
+ // Open the possibly existing vdex. If none exist, we pass -1 to dex2oat for input-vdex-fd.
+ const char* path = nullptr;
+ if (is_odex_location) {
+ if (calculate_odex_file_path(in_odex_path, apk_path, instruction_set)) {
+ path = in_odex_path;
+ } else {
+ ALOGE("installd cannot compute input vdex location for '%s'\n", apk_path);
+ return -1;
+ }
+ } else {
+ path = out_oat_path;
+ }
+ in_vdex_path_str = create_vdex_filename(path);
+ if (in_vdex_path_str.empty()) {
+ ALOGE("installd cannot compute input vdex location for '%s'\n", path);
+ return -1;
+ }
+ in_vdex_fd.reset(open(in_vdex_path_str.c_str(), O_RDONLY, 0));
+ }
+
+ // Infer the name of the output VDEX and create it.
+ const std::string out_vdex_path_str = create_vdex_filename(out_oat_path_str);
+ if (out_vdex_path_str.empty()) {
+ return -1;
+ }
+ Dex2oatFileWrapper<std::function<void ()>> out_vdex_fd(
+ open_output_file(out_vdex_path_str.c_str(), /*recreate*/true, /*permissions*/0644),
+ [out_vdex_path_str]() { unlink(out_vdex_path_str.c_str()); });
+ if (out_vdex_fd.get() < 0) {
+ ALOGE("installd cannot open '%s' for output during dexopt\n", out_vdex_path_str.c_str());
+ return -1;
+ }
+ if (!set_permissions_and_ownership(out_vdex_fd.get(), is_public,
+ uid, out_vdex_path_str.c_str())) {
+ return -1;
+ }
+
+ // Create a swap file if necessary.
+ base::unique_fd swap_fd;
+ if (ShouldUseSwapFileForDexopt()) {
+ // Make sure there really is enough space.
+ char swap_file_name[PKG_PATH_MAX];
+ strcpy(swap_file_name, out_oat_path);
+ if (add_extension_to_file_name(swap_file_name, ".swap")) {
+ swap_fd.reset(open_output_file(swap_file_name, /*recreate*/true, /*permissions*/0600));
+ }
+ if (swap_fd.get() < 0) {
+ // Could not create swap file. Optimistically go on and hope that we can compile
+ // without it.
+ ALOGE("installd could not create '%s' for swap during dexopt\n", swap_file_name);
+ } else {
+ // Immediately unlink. We don't really want to hit flash.
+ if (unlink(swap_file_name) < 0) {
+ PLOG(ERROR) << "Couldn't unlink swap file " << swap_file_name;
+ }
+ }
+ }
+
+ // Avoid generating an app image for extract only since it will not contain any classes.
+ Dex2oatFileWrapper<std::function<void ()>> image_fd;
+ const std::string image_path = create_image_filename(out_oat_path);
+ if (dexopt_action != PATCHOAT_FOR_RELOCATION && !image_path.empty()) {
+ char app_image_format[kPropertyValueMax];
+ bool have_app_image_format =
+ get_property("dalvik.vm.appimageformat", app_image_format, NULL) > 0;
+ // Use app images only if it is enabled (by a set image format) and we are compiling
+ // profile-guided (so the app image doesn't conservatively contain all classes).
+ if (profile_guided && have_app_image_format) {
+ // Recreate is true since we do not want to modify a mapped image. If the app is
+ // already running and we modify the image file, it can cause crashes (b/27493510).
+ image_fd.reset(open_output_file(image_path.c_str(),
+ true /*recreate*/,
+ 0600 /*permissions*/),
+ [image_path]() { unlink(image_path.c_str()); }
+ );
+ if (image_fd.get() < 0) {
+ // Could not create application image file. Go on since we can compile without
+ // it.
+ LOG(ERROR) << "installd could not create '"
+ << image_path
+ << "' for image file during dexopt";
+ } else if (!set_permissions_and_ownership(image_fd.get(),
+ is_public,
+ uid,
+ image_path.c_str())) {
+ image_fd.reset(-1);
+ }
+ }
+ // If we have a valid image file path but no image fd, explicitly erase the image file.
+ if (image_fd.get() < 0) {
+ if (unlink(image_path.c_str()) < 0) {
+ if (errno != ENOENT) {
+ PLOG(ERROR) << "Couldn't unlink image file " << image_path;
+ }
+ }
+ }
+ }
+
+ ALOGV("DexInv: --- BEGIN '%s' ---\n", input_file);
+
+ pid_t pid = fork();
+ if (pid == 0) {
+ /* child -- drop privileges before continuing */
+ drop_capabilities(uid);
+
+ SetDex2OatAndPatchOatScheduling(boot_complete);
+ if (flock(out_oat_fd.get(), LOCK_EX | LOCK_NB) != 0) {
+ ALOGE("flock(%s) failed: %s\n", out_oat_path, strerror(errno));
+ _exit(67);
+ }
+
+ if (dexopt_action == PATCHOAT_FOR_RELOCATION) {
+ run_patchoat(input_fd.get(),
+ in_vdex_fd.get(),
+ out_oat_fd.get(),
+ out_vdex_fd.get(),
+ input_file,
+ in_vdex_path_str.c_str(),
+ out_oat_path,
+ out_vdex_path_str.c_str(),
+ pkgname,
+ instruction_set);
+ } else {
+ // Pass dex2oat the relative path to the input file.
+ const char *input_file_name = get_location_from_path(input_file);
+ run_dex2oat(input_fd.get(),
+ out_oat_fd.get(),
+ in_vdex_fd.get(),
+ out_vdex_fd.get(),
+ image_fd.get(),
+ input_file_name,
+ out_oat_path,
+ swap_fd.get(),
+ instruction_set,
+ compiler_filter,
+ vm_safe_mode,
+ debuggable,
+ boot_complete,
+ reference_profile_fd.get(),
+ shared_libraries);
+ }
+ _exit(68); /* only get here on exec failure */
+ } else {
+ int res = wait_child(pid);
+ if (res == 0) {
+ ALOGV("DexInv: --- END '%s' (success) ---\n", input_file);
+ } else {
+ ALOGE("DexInv: --- END '%s' --- status=0x%04x, process failed\n", input_file, res);
+ return -1;
+ }
+ }
+
+ struct utimbuf ut;
+ ut.actime = input_stat.st_atime;
+ ut.modtime = input_stat.st_mtime;
+ utime(out_oat_path, &ut);
+
+ // We've been successful, don't delete output.
+ out_oat_fd.SetCleanup(false);
+ out_vdex_fd.SetCleanup(false);
+ image_fd.SetCleanup(false);
+ reference_profile_fd.SetCleanup(false);
+
+ return 0;
+}
+
+binder::Status InstalldNativeService::dexopt(const std::string& apkPath, int32_t uid,
+ const std::unique_ptr<std::string>& packageName, const std::string& instructionSet,
+ int32_t dexoptNeeded, const std::unique_ptr<std::string>& outputPath, int32_t dexFlags,
+ const std::string& compilerFilter, const std::unique_ptr<std::string>& uuid,
+ const std::unique_ptr<std::string>& sharedLibraries) {
+ ENFORCE_UID(AID_SYSTEM);
+
+ const char* apk_path = apkPath.c_str();
+ const char* pkgname = packageName ? packageName->c_str() : "*";
+ const char* instruction_set = instructionSet.c_str();
+ const char* oat_dir = outputPath ? outputPath->c_str() : nullptr;
+ const char* compiler_filter = compilerFilter.c_str();
+ const char* volume_uuid = uuid ? uuid->c_str() : nullptr;
+ const char* shared_libraries = sharedLibraries ? sharedLibraries->c_str() : nullptr;
+
+ int res = android::installd::dexopt(apk_path, uid, pkgname, instruction_set, dexoptNeeded,
+ oat_dir, dexFlags, compiler_filter, volume_uuid, shared_libraries);
+ return res ? binder::Status::fromServiceSpecificError(-1) : binder::Status::ok();
+}
+
+binder::Status InstalldNativeService::markBootComplete(const std::string& instructionSet) {
+ ENFORCE_UID(AID_SYSTEM);
+ const char* instruction_set = instructionSet.c_str();
+
+ char boot_marker_path[PKG_PATH_MAX];
+ sprintf(boot_marker_path,
+ "%s/%s/%s/.booting",
+ android_data_dir.path,
+ DALVIK_CACHE,
+ instruction_set);
+
+ ALOGV("mark_boot_complete : %s", boot_marker_path);
+ if (unlink(boot_marker_path) != 0) {
+ ALOGE("Unable to unlink boot marker at %s, error=%s", boot_marker_path, strerror(errno));
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+ return binder::Status::ok();
+}
+
+void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid,
+ struct stat* statbuf)
+{
+ while (path[basepos] != 0) {
+ if (path[basepos] == '/') {
+ path[basepos] = 0;
+ if (lstat(path, statbuf) < 0) {
+ ALOGV("Making directory: %s\n", path);
+ if (mkdir(path, mode) == 0) {
+ chown(path, uid, gid);
+ } else {
+ ALOGW("Unable to make directory %s: %s\n", path, strerror(errno));
+ }
+ }
+ path[basepos] = '/';
+ basepos++;
+ }
+ basepos++;
+ }
+}
+
+binder::Status InstalldNativeService::linkNativeLibraryDirectory(
+ const std::unique_ptr<std::string>& uuid, const std::string& packageName,
+ const std::string& nativeLibPath32, int32_t userId) {
+ ENFORCE_UID(AID_SYSTEM);
+ const char* uuid_ = uuid ? uuid->c_str() : nullptr;
+ const char* pkgname = packageName.c_str();
+ const char* asecLibDir = nativeLibPath32.c_str();
+ struct stat s, libStat;
+ int rc = 0;
+
+ std::string _pkgdir(create_data_user_ce_package_path(uuid_, userId, pkgname));
+ std::string _libsymlink(_pkgdir + PKG_LIB_POSTFIX);
+
+ const char* pkgdir = _pkgdir.c_str();
+ const char* libsymlink = _libsymlink.c_str();
+
+ if (stat(pkgdir, &s) < 0) {
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+
+ if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) {
+ ALOGE("failed to chown '%s': %s\n", pkgdir, strerror(errno));
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+
+ if (chmod(pkgdir, 0700) < 0) {
+ ALOGE("linklib() 1: failed to chmod '%s': %s\n", pkgdir, strerror(errno));
+ rc = -1;
+ goto out;
+ }
+
+ if (lstat(libsymlink, &libStat) < 0) {
+ if (errno != ENOENT) {
+ ALOGE("couldn't stat lib dir: %s\n", strerror(errno));
+ rc = -1;
+ goto out;
+ }
+ } else {
+ if (S_ISDIR(libStat.st_mode)) {
+ if (delete_dir_contents(libsymlink, 1, NULL) < 0) {
+ rc = -1;
+ goto out;
+ }
+ } else if (S_ISLNK(libStat.st_mode)) {
+ if (unlink(libsymlink) < 0) {
+ ALOGE("couldn't unlink lib dir: %s\n", strerror(errno));
+ rc = -1;
+ goto out;
+ }
+ }
+ }
+
+ if (symlink(asecLibDir, libsymlink) < 0) {
+ ALOGE("couldn't symlink directory '%s' -> '%s': %s\n", libsymlink, asecLibDir,
+ strerror(errno));
+ rc = -errno;
+ goto out;
+ }
+
+out:
+ if (chmod(pkgdir, s.st_mode) < 0) {
+ ALOGE("linklib() 2: failed to chmod '%s': %s\n", pkgdir, strerror(errno));
+ rc = -errno;
+ }
+
+ if (chown(pkgdir, s.st_uid, s.st_gid) < 0) {
+ ALOGE("failed to chown '%s' : %s\n", pkgdir, strerror(errno));
+ rc = -errno;
+ }
+
+ return rc ? binder::Status::fromServiceSpecificError(-1) : binder::Status::ok();
+}
+
+static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd)
+{
+ static const char *IDMAP_BIN = "/system/bin/idmap";
+ static const size_t MAX_INT_LEN = 32;
+ char idmap_str[MAX_INT_LEN];
+
+ snprintf(idmap_str, sizeof(idmap_str), "%d", idmap_fd);
+
+ execl(IDMAP_BIN, IDMAP_BIN, "--fd", target_apk, overlay_apk, idmap_str, (char*)NULL);
+ ALOGE("execl(%s) failed: %s\n", IDMAP_BIN, strerror(errno));
+}
+
+// Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix)
+// eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap
+static int flatten_path(const char *prefix, const char *suffix,
+ const char *overlay_path, char *idmap_path, size_t N)
+{
+ if (overlay_path == NULL || idmap_path == NULL) {
+ return -1;
+ }
+ const size_t len_overlay_path = strlen(overlay_path);
+ // will access overlay_path + 1 further below; requires absolute path
+ if (len_overlay_path < 2 || *overlay_path != '/') {
+ return -1;
+ }
+ const size_t len_idmap_root = strlen(prefix);
+ const size_t len_suffix = strlen(suffix);
+ if (SIZE_MAX - len_idmap_root < len_overlay_path ||
+ SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) {
+ // additions below would cause overflow
+ return -1;
+ }
+ if (N < len_idmap_root + len_overlay_path + len_suffix) {
+ return -1;
+ }
+ memset(idmap_path, 0, N);
+ snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix);
+ char *ch = idmap_path + len_idmap_root;
+ while (*ch != '\0') {
+ if (*ch == '/') {
+ *ch = '@';
+ }
+ ++ch;
+ }
+ return 0;
+}
+
+binder::Status InstalldNativeService::idmap(const std::string& targetApkPath,
+ const std::string& overlayApkPath, int32_t uid) {
+ ENFORCE_UID(AID_SYSTEM);
+ const char* target_apk = targetApkPath.c_str();
+ const char* overlay_apk = overlayApkPath.c_str();
+ ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid);
+
+ int idmap_fd = -1;
+ char idmap_path[PATH_MAX];
+
+ if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk,
+ idmap_path, sizeof(idmap_path)) == -1) {
+ ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk);
+ goto fail;
+ }
+
+ unlink(idmap_path);
+ idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644);
+ if (idmap_fd < 0) {
+ ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno));
+ goto fail;
+ }
+ if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) {
+ ALOGE("idmap cannot chown '%s'\n", idmap_path);
+ goto fail;
+ }
+ if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) {
+ ALOGE("idmap cannot chmod '%s'\n", idmap_path);
+ goto fail;
+ }
+
+ pid_t pid;
+ pid = fork();
+ if (pid == 0) {
+ /* child -- drop privileges before continuing */
+ if (setgid(uid) != 0) {
+ ALOGE("setgid(%d) failed during idmap\n", uid);
+ exit(1);
+ }
+ if (setuid(uid) != 0) {
+ ALOGE("setuid(%d) failed during idmap\n", uid);
+ exit(1);
+ }
+ if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) {
+ ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno));
+ exit(1);
+ }
+
+ run_idmap(target_apk, overlay_apk, idmap_fd);
+ exit(1); /* only if exec call to idmap failed */
+ } else {
+ int status = wait_child(pid);
+ if (status != 0) {
+ ALOGE("idmap failed, status=0x%04x\n", status);
+ goto fail;
+ }
+ }
+
+ close(idmap_fd);
+ return binder::Status::ok();
+fail:
+ if (idmap_fd >= 0) {
+ close(idmap_fd);
+ unlink(idmap_path);
+ }
+ return binder::Status::fromServiceSpecificError(-1);
+}
+
+binder::Status InstalldNativeService::restoreconAppData(const std::unique_ptr<std::string>& uuid,
+ const std::string& packageName, int32_t userId, int32_t flags, int32_t appId,
+ const std::string& seInfo) {
+ ENFORCE_UID(AID_SYSTEM);
+ int res = 0;
+
+ // 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();
+
+ if (!pkgName || !seinfo) {
+ ALOGE("Package name or seinfo tag is null when trying to restorecon.");
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+
+ 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) {
+ PLOG(ERROR) << "restorecon failed for " << path;
+ res = -1;
+ }
+ }
+ 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) {
+ PLOG(ERROR) << "restorecon failed for " << path;
+ // TODO: include result once 25796509 is fixed
+ }
+ }
+ return res ? binder::Status::fromServiceSpecificError(-1) : binder::Status::ok();
+}
+
+binder::Status InstalldNativeService::createOatDir(const std::string& oatDir,
+ const std::string& instructionSet) {
+ ENFORCE_UID(AID_SYSTEM);
+ 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)) {
+ ALOGE("invalid apk path '%s' (bad prefix)\n", oat_dir);
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+ if (fs_prepare_dir(oat_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) {
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+ if (selinux_android_restorecon(oat_dir, 0)) {
+ ALOGE("cannot restorecon dir '%s': %s\n", oat_dir, strerror(errno));
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+ 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 binder::Status::fromServiceSpecificError(-1);
+ }
+ return binder::Status::ok();
+}
+
+binder::Status InstalldNativeService::rmPackageDir(const std::string& packageDir) {
+ ENFORCE_UID(AID_SYSTEM);
+ const char* apk_path = packageDir.c_str();
+ if (validate_apk_path(apk_path)) {
+ ALOGE("invalid apk path '%s' (bad prefix)\n", apk_path);
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+ int res = delete_dir_contents(apk_path, 1 /* also_delete_dir */,
+ NULL /* exclusion_predicate */);
+ return res ? binder::Status::fromServiceSpecificError(-1) : binder::Status::ok();
+}
+
+binder::Status InstalldNativeService::linkFile(const std::string& relativePath,
+ const std::string& fromBase, const std::string& toBase) {
+ ENFORCE_UID(AID_SYSTEM);
+ 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)) {
+ ALOGE("invalid app data sub-path '%s' (bad prefix)\n", from_path);
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+
+ if (validate_apk_path_subdirs(to_path)) {
+ ALOGE("invalid app data sub-path '%s' (bad prefix)\n", to_path);
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+
+ const int ret = link(from_path, to_path);
+ if (ret < 0) {
+ ALOGE("link(%s, %s) failed : %s", from_path, to_path, strerror(errno));
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+
+ return binder::Status::ok();
+}
+
+// Helper for move_ab, so that we can have common failure-case cleanup.
+static bool unlink_and_rename(const char* from, const char* to) {
+ // Check whether "from" exists, and if so whether it's regular. If it is, unlink. Otherwise,
+ // return a failure.
+ struct stat s;
+ if (stat(to, &s) == 0) {
+ if (!S_ISREG(s.st_mode)) {
+ LOG(ERROR) << from << " is not a regular file to replace for A/B.";
+ return false;
+ }
+ if (unlink(to) != 0) {
+ LOG(ERROR) << "Could not unlink " << to << " to move A/B.";
+ return false;
+ }
+ } else {
+ // This may be a permission problem. We could investigate the error code, but we'll just
+ // let the rename failure do the work for us.
+ }
+
+ // Try to rename "to" to "from."
+ if (rename(from, to) != 0) {
+ PLOG(ERROR) << "Could not rename " << from << " to " << to;
+ return false;
+ }
+ return true;
+}
+
+// Move/rename a B artifact (from) to an A artifact (to).
+static bool move_ab_path(const std::string& b_path, const std::string& a_path) {
+ // Check whether B exists.
+ {
+ struct stat s;
+ if (stat(b_path.c_str(), &s) != 0) {
+ // Silently ignore for now. The service calling this isn't smart enough to understand
+ // lack of artifacts at the moment.
+ return false;
+ }
+ if (!S_ISREG(s.st_mode)) {
+ LOG(ERROR) << "A/B artifact " << b_path << " is not a regular file.";
+ // Try to unlink, but swallow errors.
+ unlink(b_path.c_str());
+ return false;
+ }
+ }
+
+ // Rename B to A.
+ if (!unlink_and_rename(b_path.c_str(), a_path.c_str())) {
+ // Delete the b_path so we don't try again (or fail earlier).
+ if (unlink(b_path.c_str()) != 0) {
+ PLOG(ERROR) << "Could not unlink " << b_path;
+ }
+
+ return false;
+ }
+
+ return true;
+}
+
+binder::Status InstalldNativeService::moveAb(const std::string& apkPath,
+ const std::string& instructionSet, const std::string& outputPath) {
+ ENFORCE_UID(AID_SYSTEM);
+ const char* apk_path = apkPath.c_str();
+ const char* instruction_set = instructionSet.c_str();
+ const char* oat_dir = outputPath.c_str();
+
+ // Get the current slot suffix. No suffix, no A/B.
+ std::string slot_suffix;
+ {
+ char buf[kPropertyValueMax];
+ if (get_property("ro.boot.slot_suffix", buf, nullptr) <= 0) {
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+ slot_suffix = buf;
+
+ if (!ValidateTargetSlotSuffix(slot_suffix)) {
+ LOG(ERROR) << "Target slot suffix not legal: " << slot_suffix;
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+ }
+
+ // Validate other inputs.
+ if (validate_apk_path(apk_path) != 0) {
+ LOG(ERROR) << "invalid apk_path " << apk_path;
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+ if (validate_apk_path(oat_dir) != 0) {
+ LOG(ERROR) << "invalid oat_dir " << oat_dir;
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+
+ char a_path[PKG_PATH_MAX];
+ if (!calculate_oat_file_path(a_path, oat_dir, apk_path, instruction_set)) {
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+ const std::string a_vdex_path = create_vdex_filename(a_path);
+ const std::string a_image_path = create_image_filename(a_path);
+
+ // B path = A path + slot suffix.
+ const std::string b_path = StringPrintf("%s.%s", a_path, slot_suffix.c_str());
+ const std::string b_vdex_path = StringPrintf("%s.%s", a_vdex_path.c_str(), slot_suffix.c_str());
+ const std::string b_image_path = StringPrintf("%s.%s",
+ a_image_path.c_str(),
+ slot_suffix.c_str());
+
+ bool success = true;
+ if (move_ab_path(b_path, a_path)) {
+ if (move_ab_path(b_vdex_path, a_vdex_path)) {
+ // Note: we can live without an app image. As such, ignore failure to move the image file.
+ // If we decide to require the app image, or the app image being moved correctly,
+ // then change accordingly.
+ constexpr bool kIgnoreAppImageFailure = true;
+
+ if (!a_image_path.empty()) {
+ if (!move_ab_path(b_image_path, a_image_path)) {
+ unlink(a_image_path.c_str());
+ if (!kIgnoreAppImageFailure) {
+ success = false;
+ }
+ }
+ }
+ } else {
+ // Cleanup: delete B image, ignore errors.
+ unlink(b_image_path.c_str());
+ success = false;
+ }
+ } else {
+ // Cleanup: delete B image, ignore errors.
+ unlink(b_vdex_path.c_str());
+ unlink(b_image_path.c_str());
+ success = false;
+ }
+
+ return success ? binder::Status::ok() : binder::Status::fromServiceSpecificError(-1);
+}
+
+binder::Status InstalldNativeService::deleteOdex(const std::string& apkPath,
+ const std::string& instructionSet, const std::string& outputPath) {
+ ENFORCE_UID(AID_SYSTEM);
+ const char* apk_path = apkPath.c_str();
+ const char* instruction_set = instructionSet.c_str();
+ const char* oat_dir = outputPath.c_str();
+
+ // Delete the oat/odex file.
+ char out_path[PKG_PATH_MAX];
+ if (!create_oat_out_path(apk_path, instruction_set, oat_dir, out_path)) {
+ return binder::Status::fromServiceSpecificError(-1);
+ }
+
+ // In case of a permission failure report the issue. Otherwise just print a warning.
+ auto unlink_and_check = [](const char* path) -> bool {
+ int result = unlink(path);
+ if (result != 0) {
+ if (errno == EACCES || errno == EPERM) {
+ PLOG(ERROR) << "Could not unlink " << path;
+ return false;
+ }
+ PLOG(WARNING) << "Could not unlink " << path;
+ }
+ return true;
+ };
+
+ // Delete the oat/odex file.
+ bool return_value_oat = unlink_and_check(out_path);
+
+ // Derive and delete the app image.
+ bool return_value_art = unlink_and_check(create_image_filename(out_path).c_str());
+
+ // Report success.
+ bool success = return_value_oat && return_value_art;
+ return success ? binder::Status::ok() : binder::Status::fromServiceSpecificError(-1);
+}
+
+} // namespace installd
+} // namespace android