| /* |
| ** 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 "commands.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 <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 DEXOPT_DEX2OAT_NEEDED = 1; |
| static constexpr int DEXOPT_PATCHOAT_NEEDED = 2; |
| static constexpr int DEXOPT_SELF_PATCHOAT_NEEDED = 3; |
| |
| #define MIN_RESTRICTED_HOME_SDK_VERSION 24 // > M |
| |
| typedef int fd_t; |
| |
| 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); |
| } |
| |
| int create_app_data(const char *uuid, const char *pkgname, userid_t userid, int flags, |
| appid_t appid, const char* seinfo, int target_sdk_version) { |
| uid_t uid = multiuser_get_uid(userid, appid); |
| int target_mode = target_sdk_version >= MIN_RESTRICTED_HOME_SDK_VERSION ? 0700 : 0751; |
| if (flags & FLAG_STORAGE_CE) { |
| auto path = create_data_user_ce_package_path(uuid, userid, pkgname); |
| if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) != 0) { |
| PLOG(ERROR) << "Failed to prepare " << path; |
| return -1; |
| } |
| if (selinux_android_setfilecon(path.c_str(), pkgname, seinfo, uid) < 0) { |
| PLOG(ERROR) << "Failed to setfilecon " << path; |
| return -1; |
| } |
| } |
| if (flags & FLAG_STORAGE_DE) { |
| auto path = create_data_user_de_package_path(uuid, userid, pkgname); |
| if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) == -1) { |
| PLOG(ERROR) << "Failed to prepare " << path; |
| // TODO: include result once 25796509 is fixed |
| return 0; |
| } |
| if (selinux_android_setfilecon(path.c_str(), pkgname, seinfo, uid) < 0) { |
| PLOG(ERROR) << "Failed to setfilecon " << path; |
| // TODO: include result once 25796509 is fixed |
| return 0; |
| } |
| |
| 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 -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 -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 -1; |
| } |
| } |
| } |
| return 0; |
| } |
| |
| int migrate_app_data(const char *uuid, const char *pkgname, userid_t userid, int flags) { |
| // 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 -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 -1; |
| } |
| if (rename(source.c_str(), target.c_str()) != 0) { |
| PLOG(ERROR) << "Failed to rename"; |
| return -1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| 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; |
| } |
| |
| int clear_app_profiles(const char* pkgname) { |
| bool success = true; |
| success &= clear_reference_profile(pkgname); |
| success &= clear_current_profiles(pkgname); |
| return success ? 0 : -1; |
| } |
| |
| int clear_app_data(const char *uuid, const char *pkgname, userid_t userid, int flags, |
| ino_t ce_data_inode) { |
| 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; |
| } |
| |
| int res = 0; |
| if (flags & FLAG_STORAGE_CE) { |
| auto path = create_data_user_ce_package_path(uuid, userid, pkgname, ce_data_inode) + suffix; |
| if (access(path.c_str(), F_OK) == 0) { |
| res |= delete_dir_contents(path); |
| } |
| } |
| if (flags & FLAG_STORAGE_DE) { |
| 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; |
| } |
| |
| 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); |
| } |
| |
| int destroy_app_profiles(const char *pkgname) { |
| 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; |
| } |
| |
| int destroy_app_data(const char *uuid, const char *pkgname, userid_t userid, int flags, |
| ino_t ce_data_inode) { |
| int res = 0; |
| if (flags & FLAG_STORAGE_CE) { |
| res |= delete_dir_contents_and_dir( |
| create_data_user_ce_package_path(uuid, userid, pkgname, ce_data_inode)); |
| } |
| 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; |
| } |
| |
| int move_complete_app(const char *from_uuid, const char *to_uuid, const char *package_name, |
| const char *data_app_name, appid_t appid, const char* seinfo, int target_sdk_version) { |
| 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 (create_app_data(to_uuid, package_name, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, |
| appid, seinfo, target_sdk_version) != 0) { |
| 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 (restorecon_app_data(to_uuid, package_name, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, |
| appid, seinfo) != 0) { |
| 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 0; |
| |
| 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 -1; |
| } |
| |
| int create_user_data(const char *uuid, userid_t userid, int user_serial ATTRIBUTE_UNUSED, |
| int flags) { |
| if (flags & FLAG_STORAGE_DE) { |
| if (uuid == nullptr) { |
| return ensure_config_user_dirs(userid); |
| } |
| } |
| return 0; |
| } |
| |
| int destroy_user_data(const char *uuid, userid_t userid, int flags) { |
| 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; |
| } |
| |
| /* 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. |
| */ |
| int free_cache(const char *uuid, int64_t free_size) { |
| cache_t* cache; |
| int64_t avail; |
| |
| auto data_path = create_data_path(uuid); |
| |
| avail = data_disk_free(data_path); |
| if (avail < 0) return -1; |
| |
| ALOGI("free_cache(%" PRId64 ") avail %" PRId64 "\n", free_size, avail); |
| if (avail >= free_size) return 0; |
| |
| 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, free_size); |
| finish_cache_collection(cache); |
| |
| return data_disk_free(data_path) >= free_size ? 0 : -1; |
| } |
| |
| int rm_dex(const char *path, const char *instruction_set) |
| { |
| char dex_path[PKG_PATH_MAX]; |
| |
| if (validate_apk_path(path) && validate_system_app_path(path)) { |
| ALOGE("invalid apk path '%s' (bad prefix)\n", path); |
| return -1; |
| } |
| |
| if (!create_cache_path(dex_path, path, instruction_set)) return -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 -1; |
| } else { |
| return 0; |
| } |
| } |
| |
| 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); |
| } |
| |
| int get_app_size(const char *uuid, const char *pkgname, int userid, int flags, ino_t ce_data_inode, |
| const char *code_path, int64_t *codesize, int64_t *datasize, int64_t *cachesize, |
| int64_t* asecsize) { |
| DIR *d; |
| int dfd; |
| |
| 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, ce_data_inode); |
| 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); |
| } |
| |
| *asecsize = 0; |
| |
| return 0; |
| } |
| |
| int get_app_data_inode(const char *uuid, const char *pkgname, int userid, int flags, ino_t *inode) { |
| struct stat buf; |
| memset(&buf, 0, sizeof(buf)); |
| if (flags & FLAG_STORAGE_CE) { |
| auto path = create_data_user_ce_package_path(uuid, userid, pkgname); |
| if (stat(path.c_str(), &buf) == 0) { |
| *inode = buf.st_ino; |
| return 0; |
| } |
| } |
| return -1; |
| } |
| |
| 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 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 vdex_fd_arg[strlen("--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(vdex_fd_arg, "--vdex-fd=%d", 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[8 // 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++] = 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. |
| bool dump_profile(uid_t uid, const char* pkgname, const char* code_path_string) { |
| 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); |
| return false; |
| } |
| |
| 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()); |
| return false; |
| } |
| 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); |
| return false; |
| } |
| 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; |
| return false; |
| } |
| return true; |
| } |
| |
| 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 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 (oat_dir != NULL && oat_dir[0] != '!') { |
| if (validate_apk_path(oat_dir)) { |
| ALOGE("invalid 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. |
| bool merge_profiles(uid_t uid, const char *pkgname) { |
| return analyse_profiles(uid, pkgname); |
| } |
| |
| static const char* parse_null(const char* arg) { |
| if (strcmp(arg, "!") == 0) { |
| return nullptr; |
| } else { |
| return arg; |
| } |
| } |
| |
| int dexopt(const char* const params[DEXOPT_PARAM_COUNT]) { |
| return dexopt(params[0], // apk_path |
| atoi(params[1]), // uid |
| params[2], // pkgname |
| params[3], // instruction_set |
| atoi(params[4]), // dexopt_needed |
| params[5], // oat_dir |
| atoi(params[6]), // dexopt_flags |
| params[7], // compiler_filter |
| parse_null(params[8]), // volume_uuid |
| parse_null(params[9])); // shared_libraries |
| static_assert(DEXOPT_PARAM_COUNT == 10U, "Unexpected dexopt param count"); |
| } |
| |
| // 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_; |
| }; |
| |
| 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]; |
| switch (dexopt_needed) { |
| case DEXOPT_DEX2OAT_NEEDED: |
| input_file = apk_path; |
| break; |
| |
| case DEXOPT_PATCHOAT_NEEDED: |
| if (!calculate_odex_file_path(in_odex_path, apk_path, instruction_set)) { |
| return -1; |
| } |
| input_file = in_odex_path; |
| break; |
| |
| case DEXOPT_SELF_PATCHOAT_NEEDED: |
| 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; |
| } |
| |
| // If invoking patchoat, open the VDEX associated with the OAT too. |
| std::string in_vdex_path_str; |
| base::unique_fd input_vdex_fd; |
| if (dexopt_needed == DEXOPT_PATCHOAT_NEEDED |
| || dexopt_needed == DEXOPT_SELF_PATCHOAT_NEEDED) { |
| in_vdex_path_str = create_vdex_filename(input_file); |
| if (in_vdex_path_str.empty()) { |
| return -1; |
| } |
| input_vdex_fd.reset(open(in_vdex_path_str.c_str(), O_RDONLY, 0)); |
| if (input_vdex_fd.get() < 0) { |
| ALOGE("installd cannot open '%s' for input during dexopt\n", in_vdex_path_str.c_str()); |
| 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; |
| } |
| |
| // 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_needed == DEXOPT_DEX2OAT_NEEDED && !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_needed == DEXOPT_PATCHOAT_NEEDED |
| || dexopt_needed == DEXOPT_SELF_PATCHOAT_NEEDED) { |
| run_patchoat(input_fd.get(), |
| input_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 if (dexopt_needed == DEXOPT_DEX2OAT_NEEDED) { |
| // 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(), |
| 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); |
| } else { |
| ALOGE("Invalid dexopt needed: %d\n", dexopt_needed); |
| _exit(73); |
| } |
| _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; |
| } |
| |
| int mark_boot_complete(const char* instruction_set) |
| { |
| 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 -1; |
| } |
| |
| return 0; |
| } |
| |
| 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++; |
| } |
| } |
| |
| int linklib(const char* uuid, const char* pkgname, const char* asecLibDir, int userId) |
| { |
| 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 -1; |
| |
| if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) { |
| ALOGE("failed to chown '%s': %s\n", pkgdir, strerror(errno)); |
| return -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)); |
| return -errno; |
| } |
| |
| return rc; |
| } |
| |
| 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; |
| } |
| |
| int idmap(const char *target_apk, const char *overlay_apk, uid_t uid) |
| { |
| 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 0; |
| fail: |
| if (idmap_fd >= 0) { |
| close(idmap_fd); |
| unlink(idmap_path); |
| } |
| return -1; |
| } |
| |
| int restorecon_app_data(const char* uuid, const char* pkgName, userid_t userid, int flags, |
| appid_t appid, const char* seinfo) { |
| int res = 0; |
| |
| // SELINUX_ANDROID_RESTORECON_DATADATA flag is set by libselinux. Not needed here. |
| unsigned int seflags = SELINUX_ANDROID_RESTORECON_RECURSE; |
| |
| if (!pkgName || !seinfo) { |
| ALOGE("Package name or seinfo tag is null when trying to restorecon."); |
| return -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; |
| } |
| |
| int create_oat_dir(const char* oat_dir, const char* instruction_set) |
| { |
| char oat_instr_dir[PKG_PATH_MAX]; |
| |
| if (validate_apk_path(oat_dir)) { |
| ALOGE("invalid apk path '%s' (bad prefix)\n", oat_dir); |
| return -1; |
| } |
| if (fs_prepare_dir(oat_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { |
| return -1; |
| } |
| if (selinux_android_restorecon(oat_dir, 0)) { |
| ALOGE("cannot restorecon dir '%s': %s\n", oat_dir, strerror(errno)); |
| return -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 -1; |
| } |
| return 0; |
| } |
| |
| int rm_package_dir(const char* apk_path) |
| { |
| if (validate_apk_path(apk_path)) { |
| ALOGE("invalid apk path '%s' (bad prefix)\n", apk_path); |
| return -1; |
| } |
| return delete_dir_contents(apk_path, 1 /* also_delete_dir */ , NULL /* exclusion_predicate */); |
| } |
| |
| int link_file(const char* relative_path, const char* from_base, const char* to_base) { |
| 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 -1; |
| } |
| |
| if (validate_apk_path_subdirs(to_path)) { |
| ALOGE("invalid app data sub-path '%s' (bad prefix)\n", to_path); |
| return -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 -1; |
| } |
| |
| return 0; |
| } |
| |
| // 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; |
| } |
| |
| int move_ab(const char* apk_path, const char* instruction_set, const char* oat_dir) { |
| if (apk_path == nullptr || instruction_set == nullptr || oat_dir == nullptr) { |
| LOG(ERROR) << "Cannot move_ab with null input"; |
| return -1; |
| } |
| |
| // 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 -1; |
| } |
| slot_suffix = buf; |
| |
| if (!ValidateTargetSlotSuffix(slot_suffix)) { |
| LOG(ERROR) << "Target slot suffix not legal: " << slot_suffix; |
| return -1; |
| } |
| } |
| |
| // Validate other inputs. |
| if (validate_apk_path(apk_path) != 0) { |
| LOG(ERROR) << "invalid apk_path " << apk_path; |
| return -1; |
| } |
| if (validate_apk_path(oat_dir) != 0) { |
| LOG(ERROR) << "invalid oat_dir " << oat_dir; |
| return -1; |
| } |
| |
| char a_path[PKG_PATH_MAX]; |
| if (!calculate_oat_file_path(a_path, oat_dir, apk_path, instruction_set)) { |
| return -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)) { |
| 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 ? 0 : -1; |
| } |
| |
| bool delete_odex(const char *apk_path, const char *instruction_set, const char *oat_dir) { |
| // 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 false; |
| } |
| |
| // 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. |
| return return_value_oat && return_value_art; |
| } |
| |
| } // namespace installd |
| } // namespace android |