| /* |
| * Copyright (C) 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 "builtins.h" |
| |
| #include <android/api-level.h> |
| #include <dirent.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <fts.h> |
| #include <glob.h> |
| #include <linux/loop.h> |
| #include <linux/module.h> |
| #include <mntent.h> |
| #include <net/if.h> |
| #include <sched.h> |
| #include <signal.h> |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/mount.h> |
| #include <sys/resource.h> |
| #include <sys/socket.h> |
| #include <sys/stat.h> |
| #include <sys/syscall.h> |
| #include <sys/system_properties.h> |
| #include <sys/time.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <unistd.h> |
| |
| #include <map> |
| #include <memory> |
| |
| #include <InitProperties.sysprop.h> |
| #include <android-base/chrono_utils.h> |
| #include <android-base/file.h> |
| #include <android-base/logging.h> |
| #include <android-base/parsedouble.h> |
| #include <android-base/parseint.h> |
| #include <android-base/properties.h> |
| #include <android-base/stringprintf.h> |
| #include <android-base/strings.h> |
| #include <android-base/unique_fd.h> |
| #include <bootloader_message/bootloader_message.h> |
| #include <cutils/android_reboot.h> |
| #include <fs_mgr.h> |
| #include <fscrypt/fscrypt.h> |
| #include <libdm/dm.h> |
| #include <libdm/loop_control.h> |
| #include <libgsi/libgsi.h> |
| #include <logwrap/logwrap.h> |
| #include <private/android_filesystem_config.h> |
| #include <selinux/android.h> |
| #include <selinux/label.h> |
| #include <selinux/selinux.h> |
| #include <system/thread_defs.h> |
| |
| #include "action_manager.h" |
| #include "apex_init_util.h" |
| #include "bootchart.h" |
| #include "builtin_arguments.h" |
| #include "fscrypt_init_extensions.h" |
| #include "init.h" |
| #include "mount_namespace.h" |
| #include "parser.h" |
| #include "property_service.h" |
| #include "reboot.h" |
| #include "rlimit_parser.h" |
| #include "selabel.h" |
| #include "selinux.h" |
| #include "service.h" |
| #include "service_list.h" |
| #include "subcontext.h" |
| #include "util.h" |
| |
| using namespace std::literals::string_literals; |
| |
| using android::base::Basename; |
| using android::base::ResultError; |
| using android::base::SetProperty; |
| using android::base::Split; |
| using android::base::StartsWith; |
| using android::base::StringPrintf; |
| using android::base::unique_fd; |
| using android::fs_mgr::Fstab; |
| using android::fs_mgr::ReadFstabFromFile; |
| |
| #define chmod DO_NOT_USE_CHMOD_USE_FCHMODAT_SYMLINK_NOFOLLOW |
| |
| namespace android { |
| namespace init { |
| |
| // There are many legacy paths in rootdir/init.rc that will virtually never exist on a new |
| // device, such as '/sys/class/leds/jogball-backlight/brightness'. As of this writing, there |
| // are 81 such failures on cuttlefish. Instead of spamming the log reporting them, we do not |
| // report such failures unless we're running at the DEBUG log level. |
| class ErrorIgnoreEnoent { |
| public: |
| ErrorIgnoreEnoent() |
| : ignore_error_(errno == ENOENT && |
| android::base::GetMinimumLogSeverity() > android::base::DEBUG) {} |
| explicit ErrorIgnoreEnoent(int errno_to_append) |
| : error_(errno_to_append), |
| ignore_error_(errno_to_append == ENOENT && |
| android::base::GetMinimumLogSeverity() > android::base::DEBUG) {} |
| |
| template <typename T> |
| operator android::base::expected<T, ResultError<android::base::Errno>>() { |
| if (ignore_error_) { |
| return {}; |
| } |
| return error_; |
| } |
| |
| template <typename T> |
| ErrorIgnoreEnoent& operator<<(T&& t) { |
| error_ << t; |
| return *this; |
| } |
| |
| private: |
| Error<> error_; |
| bool ignore_error_; |
| }; |
| |
| inline ErrorIgnoreEnoent ErrnoErrorIgnoreEnoent() { |
| return ErrorIgnoreEnoent(errno); |
| } |
| |
| std::vector<std::string> late_import_paths; |
| |
| static constexpr std::chrono::nanoseconds kCommandRetryTimeout = 5s; |
| |
| static Result<void> reboot_into_recovery(const std::vector<std::string>& options) { |
| LOG(ERROR) << "Rebooting into recovery"; |
| std::string err; |
| if (!write_bootloader_message(options, &err)) { |
| return Error() << "Failed to set bootloader message: " << err; |
| } |
| trigger_shutdown("reboot,recovery"); |
| return {}; |
| } |
| |
| template <typename F> |
| static void ForEachServiceInClass(const std::string& classname, F function) { |
| for (const auto& service : ServiceList::GetInstance()) { |
| if (service->classnames().count(classname)) std::invoke(function, service); |
| } |
| } |
| |
| static Result<void> do_class_start(const BuiltinArguments& args) { |
| // Do not start a class if it has a property persist.dont_start_class.CLASS set to 1. |
| if (android::base::GetBoolProperty("persist.init.dont_start_class." + args[1], false)) |
| return {}; |
| // Starting a class does not start services which are explicitly disabled. |
| // They must be started individually. |
| for (const auto& service : ServiceList::GetInstance()) { |
| if (service->classnames().count(args[1])) { |
| if (auto result = service->StartIfNotDisabled(); !result.ok()) { |
| LOG(ERROR) << "Could not start service '" << service->name() |
| << "' as part of class '" << args[1] << "': " << result.error(); |
| } |
| } |
| } |
| return {}; |
| } |
| |
| static Result<void> do_class_stop(const BuiltinArguments& args) { |
| ForEachServiceInClass(args[1], &Service::Stop); |
| return {}; |
| } |
| |
| static Result<void> do_class_reset(const BuiltinArguments& args) { |
| ForEachServiceInClass(args[1], &Service::Reset); |
| return {}; |
| } |
| |
| static Result<void> do_class_restart(const BuiltinArguments& args) { |
| // Do not restart a class if it has a property persist.dont_start_class.CLASS set to 1. |
| if (android::base::GetBoolProperty("persist.init.dont_start_class." + args[1], false)) |
| return {}; |
| |
| std::string classname; |
| |
| CHECK(args.size() == 2 || args.size() == 3); |
| |
| bool only_enabled = false; |
| if (args.size() == 3) { |
| if (args[1] != "--only-enabled") { |
| return Error() << "Unexpected argument: " << args[1]; |
| } |
| only_enabled = true; |
| classname = args[2]; |
| } else if (args.size() == 2) { |
| classname = args[1]; |
| } |
| |
| for (const auto& service : ServiceList::GetInstance()) { |
| if (!service->classnames().count(classname)) { |
| continue; |
| } |
| if (only_enabled && !service->IsEnabled()) { |
| continue; |
| } |
| service->Restart(); |
| } |
| return {}; |
| } |
| |
| static Result<void> do_domainname(const BuiltinArguments& args) { |
| if (auto result = WriteFile("/proc/sys/kernel/domainname", args[1]); !result.ok()) { |
| return Error() << "Unable to write to /proc/sys/kernel/domainname: " << result.error(); |
| } |
| return {}; |
| } |
| |
| static Result<void> do_enable(const BuiltinArguments& args) { |
| Service* svc = ServiceList::GetInstance().FindService(args[1]); |
| if (!svc) return Error() << "Could not find service"; |
| |
| if (auto result = svc->Enable(); !result.ok()) { |
| return Error() << "Could not enable service: " << result.error(); |
| } |
| |
| return {}; |
| } |
| |
| static Result<void> do_exec(const BuiltinArguments& args) { |
| auto service = Service::MakeTemporaryOneshotService(args.args); |
| if (!service.ok()) { |
| return Error() << "Could not create exec service: " << service.error(); |
| } |
| if (auto result = (*service)->ExecStart(); !result.ok()) { |
| return Error() << "Could not start exec service: " << result.error(); |
| } |
| |
| ServiceList::GetInstance().AddService(std::move(*service)); |
| return {}; |
| } |
| |
| static Result<void> do_exec_background(const BuiltinArguments& args) { |
| auto service = Service::MakeTemporaryOneshotService(args.args); |
| if (!service.ok()) { |
| return Error() << "Could not create exec background service: " << service.error(); |
| } |
| if (auto result = (*service)->Start(); !result.ok()) { |
| return Error() << "Could not start exec background service: " << result.error(); |
| } |
| |
| ServiceList::GetInstance().AddService(std::move(*service)); |
| return {}; |
| } |
| |
| static Result<void> do_exec_start(const BuiltinArguments& args) { |
| Service* service = ServiceList::GetInstance().FindService(args[1]); |
| if (!service) { |
| return Error() << "Service not found"; |
| } |
| |
| if (auto result = service->ExecStart(); !result.ok()) { |
| return Error() << "Could not start exec service: " << result.error(); |
| } |
| |
| return {}; |
| } |
| |
| static Result<void> do_export(const BuiltinArguments& args) { |
| if (setenv(args[1].c_str(), args[2].c_str(), 1) == -1) { |
| return ErrnoError() << "setenv() failed"; |
| } |
| return {}; |
| } |
| |
| static Result<void> do_load_exports(const BuiltinArguments& args) { |
| auto file_contents = ReadFile(args[1]); |
| if (!file_contents.ok()) { |
| return Error() << "Could not read input file '" << args[1] |
| << "': " << file_contents.error(); |
| } |
| |
| auto lines = Split(*file_contents, "\n"); |
| for (const auto& line : lines) { |
| if (line.empty()) { |
| continue; |
| } |
| |
| auto env = Split(line, " "); |
| |
| if (env.size() != 3) { |
| return ErrnoError() << "Expected a line as `export <name> <value>`, found: `" << line |
| << "`"; |
| } |
| |
| if (env[0] != "export") { |
| return ErrnoError() << "Unknown action: '" << env[0] << "', expected 'export'"; |
| } |
| |
| if (setenv(env[1].c_str(), env[2].c_str(), 1) == -1) { |
| return ErrnoError() << "Failed to export '" << line << "' from " << args[1]; |
| } |
| } |
| |
| return {}; |
| } |
| |
| static Result<void> do_hostname(const BuiltinArguments& args) { |
| if (auto result = WriteFile("/proc/sys/kernel/hostname", args[1]); !result.ok()) { |
| return Error() << "Unable to write to /proc/sys/kernel/hostname: " << result.error(); |
| } |
| return {}; |
| } |
| |
| static Result<void> do_ifup(const BuiltinArguments& args) { |
| struct ifreq ifr; |
| |
| strlcpy(ifr.ifr_name, args[1].c_str(), IFNAMSIZ); |
| |
| unique_fd s(TEMP_FAILURE_RETRY(socket(AF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0))); |
| if (s < 0) return ErrnoError() << "opening socket failed"; |
| |
| if (ioctl(s.get(), SIOCGIFFLAGS, &ifr) < 0) { |
| return ErrnoError() << "ioctl(..., SIOCGIFFLAGS, ...) failed"; |
| } |
| |
| ifr.ifr_flags |= IFF_UP; |
| |
| if (ioctl(s.get(), SIOCSIFFLAGS, &ifr) < 0) { |
| return ErrnoError() << "ioctl(..., SIOCSIFFLAGS, ...) failed"; |
| } |
| |
| return {}; |
| } |
| |
| static Result<void> do_insmod(const BuiltinArguments& args) { |
| int flags = 0; |
| auto it = args.begin() + 1; |
| |
| if (!(*it).compare("-f")) { |
| flags = MODULE_INIT_IGNORE_VERMAGIC | MODULE_INIT_IGNORE_MODVERSIONS; |
| it++; |
| } |
| |
| std::string filename = *it++; |
| std::string options = android::base::Join(std::vector<std::string>(it, args.end()), ' '); |
| |
| unique_fd fd(TEMP_FAILURE_RETRY(open(filename.c_str(), O_RDONLY | O_NOFOLLOW | O_CLOEXEC))); |
| if (fd == -1) return ErrnoError() << "open(\"" << filename << "\") failed"; |
| |
| int rc = syscall(__NR_finit_module, fd.get(), options.c_str(), flags); |
| if (rc == -1) return ErrnoError() << "finit_module for \"" << filename << "\" failed"; |
| |
| return {}; |
| } |
| |
| static Result<void> do_interface_restart(const BuiltinArguments& args) { |
| Service* svc = ServiceList::GetInstance().FindInterface(args[1]); |
| if (!svc) return Error() << "interface " << args[1] << " not found"; |
| svc->Restart(); |
| return {}; |
| } |
| |
| static Result<void> do_interface_start(const BuiltinArguments& args) { |
| Service* svc = ServiceList::GetInstance().FindInterface(args[1]); |
| if (!svc) return Error() << "interface " << args[1] << " not found"; |
| if (auto result = svc->Start(); !result.ok()) { |
| return Error() << "Could not start interface: " << result.error(); |
| } |
| return {}; |
| } |
| |
| static Result<void> do_interface_stop(const BuiltinArguments& args) { |
| Service* svc = ServiceList::GetInstance().FindInterface(args[1]); |
| if (!svc) return Error() << "interface " << args[1] << " not found"; |
| svc->Stop(); |
| return {}; |
| } |
| |
| static Result<void> make_dir_with_options(const MkdirOptions& options) { |
| std::string ref_basename; |
| if (options.ref_option == "ref") { |
| ref_basename = fscrypt_key_ref; |
| } else if (options.ref_option == "per_boot_ref") { |
| ref_basename = fscrypt_key_per_boot_ref; |
| } else { |
| return Error() << "Unknown key option: '" << options.ref_option << "'"; |
| } |
| |
| struct stat mstat; |
| if (lstat(options.target.c_str(), &mstat) != 0) { |
| if (errno != ENOENT) { |
| return ErrnoError() << "lstat() failed on " << options.target; |
| } |
| if (!make_dir(options.target, options.mode)) { |
| return ErrnoErrorIgnoreEnoent() << "mkdir() failed on " << options.target; |
| } |
| if (lstat(options.target.c_str(), &mstat) != 0) { |
| return ErrnoError() << "lstat() failed on new " << options.target; |
| } |
| } |
| if (!S_ISDIR(mstat.st_mode)) { |
| return Error() << "Not a directory on " << options.target; |
| } |
| bool needs_chmod = (mstat.st_mode & ~S_IFMT) != options.mode; |
| if ((options.uid != static_cast<uid_t>(-1) && options.uid != mstat.st_uid) || |
| (options.gid != static_cast<gid_t>(-1) && options.gid != mstat.st_gid)) { |
| if (lchown(options.target.c_str(), options.uid, options.gid) == -1) { |
| return ErrnoError() << "lchown failed on " << options.target; |
| } |
| // chown may have cleared S_ISUID and S_ISGID, chmod again |
| needs_chmod = true; |
| } |
| if (needs_chmod) { |
| if (fchmodat(AT_FDCWD, options.target.c_str(), options.mode, AT_SYMLINK_NOFOLLOW) == -1) { |
| return ErrnoError() << "fchmodat() failed on " << options.target; |
| } |
| } |
| if (IsFbeEnabled()) { |
| if (!FscryptSetDirectoryPolicy(ref_basename, options.fscrypt_action, options.target)) { |
| return reboot_into_recovery( |
| {"--prompt_and_wipe_data", "--reason=set_policy_failed:"s + options.target}); |
| } |
| } |
| return {}; |
| } |
| |
| // mkdir <path> [mode] [owner] [group] [<option> ...] |
| static Result<void> do_mkdir(const BuiltinArguments& args) { |
| auto options = ParseMkdir(args.args); |
| if (!options.ok()) return options.error(); |
| return make_dir_with_options(*options); |
| } |
| |
| /* umount <path> */ |
| static Result<void> do_umount(const BuiltinArguments& args) { |
| if (umount(args[1].c_str()) < 0) { |
| return ErrnoError() << "umount() failed"; |
| } |
| return {}; |
| } |
| |
| static struct { |
| const char *name; |
| unsigned flag; |
| } mount_flags[] = { |
| { "noatime", MS_NOATIME }, |
| { "noexec", MS_NOEXEC }, |
| { "nosuid", MS_NOSUID }, |
| { "nodev", MS_NODEV }, |
| { "nodiratime", MS_NODIRATIME }, |
| { "ro", MS_RDONLY }, |
| { "rw", 0 }, |
| { "remount", MS_REMOUNT }, |
| { "bind", MS_BIND }, |
| { "rec", MS_REC }, |
| { "unbindable", MS_UNBINDABLE }, |
| { "private", MS_PRIVATE }, |
| { "slave", MS_SLAVE }, |
| { "shared", MS_SHARED }, |
| { "defaults", 0 }, |
| { 0, 0 }, |
| }; |
| |
| /* mount <type> <device> <path> <flags ...> <options> */ |
| static Result<void> do_mount(const BuiltinArguments& args) { |
| const char* options = nullptr; |
| unsigned flags = 0; |
| bool wait = false; |
| |
| for (size_t na = 4; na < args.size(); na++) { |
| size_t i; |
| for (i = 0; mount_flags[i].name; i++) { |
| if (!args[na].compare(mount_flags[i].name)) { |
| flags |= mount_flags[i].flag; |
| break; |
| } |
| } |
| |
| if (!mount_flags[i].name) { |
| if (!args[na].compare("wait")) { |
| wait = true; |
| // If our last argument isn't a flag, wolf it up as an option string. |
| } else if (na + 1 == args.size()) { |
| options = args[na].c_str(); |
| } |
| } |
| } |
| |
| const char* system = args[1].c_str(); |
| const char* source = args[2].c_str(); |
| const char* target = args[3].c_str(); |
| |
| if (android::base::StartsWith(source, "loop@")) { |
| int mode = (flags & MS_RDONLY) ? O_RDONLY : O_RDWR; |
| const char* file_path = source + strlen("loop@"); |
| |
| // Open source file |
| if (wait) { |
| wait_for_file(file_path, kCommandRetryTimeout); |
| } |
| |
| unique_fd fd(TEMP_FAILURE_RETRY(open(file_path, mode | O_CLOEXEC))); |
| if (fd < 0) { |
| return ErrnoError() << "open(" << file_path << ", " << mode << ") failed"; |
| } |
| |
| // Allocate loop device and attach it to file_path. |
| android::dm::LoopControl loop_control; |
| std::string loop_device; |
| if (!loop_control.Attach(fd.get(), 5s, &loop_device)) { |
| return ErrnoError() << "loop_control.Attach " << file_path << " failed"; |
| } |
| |
| if (mount(loop_device.c_str(), target, system, flags, options) < 0) { |
| loop_control.Detach(loop_device); |
| return ErrnoError() << "mount() failed"; |
| } |
| } else { |
| if (wait) |
| wait_for_file(source, kCommandRetryTimeout); |
| if (mount(source, target, system, flags, options) < 0) { |
| return ErrnoErrorIgnoreEnoent() << "mount() failed"; |
| } |
| |
| } |
| |
| return {}; |
| } |
| |
| /* Imports .rc files from the specified paths. Default ones are applied if none is given. |
| * |
| * rc_paths: list of paths to rc files to import |
| */ |
| static void import_late(const std::vector<std::string>& rc_paths) { |
| auto& action_manager = ActionManager::GetInstance(); |
| auto& service_list = ServiceList::GetInstance(); |
| Parser parser = CreateParser(action_manager, service_list); |
| if (rc_paths.empty()) { |
| // Fallbacks for partitions on which early mount isn't enabled. |
| for (const auto& path : late_import_paths) { |
| parser.ParseConfig(path); |
| } |
| late_import_paths.clear(); |
| } else { |
| for (const auto& rc_path : rc_paths) { |
| parser.ParseConfig(rc_path); |
| } |
| } |
| |
| // Turning this on and letting the INFO logging be discarded adds 0.2s to |
| // Nexus 9 boot time, so it's disabled by default. |
| if (false) DumpState(); |
| } |
| |
| /* Queue event based on fs_mgr return code. |
| * |
| * code: return code of fs_mgr_mount_all |
| * |
| * This function might request a reboot, in which case it will |
| * not return. |
| * |
| * return code is processed based on input code |
| */ |
| static Result<void> queue_fs_event(int code) { |
| if (code == FS_MGR_MNTALL_DEV_NOT_ENCRYPTABLE) { |
| SetProperty("ro.crypto.state", "unsupported"); |
| ActionManager::GetInstance().QueueEventTrigger("nonencrypted"); |
| return {}; |
| } else if (code == FS_MGR_MNTALL_DEV_NEEDS_RECOVERY) { |
| /* Setup a wipe via recovery, and reboot into recovery */ |
| if (android::gsi::IsGsiRunning()) { |
| return Error() << "cannot wipe within GSI"; |
| } |
| PLOG(ERROR) << "fs_mgr_mount_all suggested recovery, so wiping data via recovery."; |
| const std::vector<std::string> options = {"--wipe_data", "--reason=fs_mgr_mount_all" }; |
| return reboot_into_recovery(options); |
| /* If reboot worked, there is no return. */ |
| } else if (code == FS_MGR_MNTALL_DEV_FILE_ENCRYPTED || |
| code == FS_MGR_MNTALL_DEV_IS_METADATA_ENCRYPTED || |
| code == FS_MGR_MNTALL_DEV_NEEDS_METADATA_ENCRYPTION) { |
| if (!FscryptInstallKeyring()) { |
| return Error() << "FscryptInstallKeyring() failed"; |
| } |
| SetProperty("ro.crypto.state", "encrypted"); |
| |
| // Although encrypted, vold has already set the device up, so we do not need to |
| // do anything different from the nonencrypted case. |
| ActionManager::GetInstance().QueueEventTrigger("nonencrypted"); |
| return {}; |
| } else if (code > 0) { |
| Error() << "fs_mgr_mount_all() returned unexpected error " << code; |
| } |
| /* else ... < 0: error */ |
| |
| return Error() << "Invalid code: " << code; |
| } |
| |
| static int initial_mount_fstab_return_code = -1; |
| |
| /* <= Q: mount_all <fstab> [ <path> ]* [--<options>]* |
| * >= R: mount_all [ <fstab> ] [--<options>]* |
| * |
| * This function might request a reboot, in which case it will |
| * not return. |
| */ |
| static Result<void> do_mount_all(const BuiltinArguments& args) { |
| auto mount_all = ParseMountAll(args.args); |
| if (!mount_all.ok()) return mount_all.error(); |
| |
| const char* prop_post_fix = "default"; |
| bool queue_event = true; |
| if (mount_all->mode == MOUNT_MODE_EARLY) { |
| prop_post_fix = "early"; |
| queue_event = false; |
| } else if (mount_all->mode == MOUNT_MODE_LATE) { |
| prop_post_fix = "late"; |
| } |
| |
| std::string prop_name = "ro.boottime.init.mount_all."s + prop_post_fix; |
| android::base::Timer t; |
| |
| Fstab fstab; |
| if (mount_all->fstab_path.empty()) { |
| if (!ReadDefaultFstab(&fstab)) { |
| return Error() << "Could not read default fstab"; |
| } |
| } else { |
| if (!ReadFstabFromFile(mount_all->fstab_path, &fstab)) { |
| return Error() << "Could not read fstab"; |
| } |
| } |
| |
| auto mount_fstab_result = fs_mgr_mount_all(&fstab, mount_all->mode); |
| SetProperty(prop_name, std::to_string(t.duration().count())); |
| |
| if (mount_all->import_rc) { |
| import_late(mount_all->rc_paths); |
| } |
| |
| if (mount_fstab_result.userdata_mounted) { |
| // This call to fs_mgr_mount_all mounted userdata. Keep the result in |
| // order for userspace reboot to correctly remount userdata. |
| LOG(INFO) << "Userdata mounted using " |
| << (mount_all->fstab_path.empty() ? "(default fstab)" : mount_all->fstab_path) |
| << " result : " << mount_fstab_result.code; |
| initial_mount_fstab_return_code = mount_fstab_result.code; |
| } |
| |
| if (queue_event) { |
| /* queue_fs_event will queue event based on mount_fstab return code |
| * and return processed return code*/ |
| auto queue_fs_result = queue_fs_event(mount_fstab_result.code); |
| if (!queue_fs_result.ok()) { |
| return Error() << "queue_fs_event() failed: " << queue_fs_result.error(); |
| } |
| } |
| |
| return {}; |
| } |
| |
| /* umount_all [ <fstab> ] */ |
| static Result<void> do_umount_all(const BuiltinArguments& args) { |
| auto umount_all = ParseUmountAll(args.args); |
| if (!umount_all.ok()) return umount_all.error(); |
| |
| Fstab fstab; |
| if (umount_all->empty()) { |
| if (!ReadDefaultFstab(&fstab)) { |
| return Error() << "Could not read default fstab"; |
| } |
| } else { |
| if (!ReadFstabFromFile(*umount_all, &fstab)) { |
| return Error() << "Could not read fstab"; |
| } |
| } |
| |
| if (auto result = fs_mgr_umount_all(&fstab); result != 0) { |
| return Error() << "umount_fstab() failed " << result; |
| } |
| return {}; |
| } |
| |
| /* swapon_all [ <fstab> ] */ |
| static Result<void> do_swapon_all(const BuiltinArguments& args) { |
| auto swapon_all = ParseSwaponAll(args.args); |
| if (!swapon_all.ok()) return swapon_all.error(); |
| |
| Fstab fstab; |
| if (swapon_all->empty()) { |
| if (!ReadDefaultFstab(&fstab)) { |
| return Error() << "Could not read default fstab"; |
| } |
| } else { |
| if (!ReadFstabFromFile(*swapon_all, &fstab)) { |
| return Error() << "Could not read fstab '" << *swapon_all << "'"; |
| } |
| } |
| |
| if (!fs_mgr_swapon_all(fstab)) { |
| return Error() << "fs_mgr_swapon_all() failed"; |
| } |
| |
| return {}; |
| } |
| |
| static Result<void> do_setprop(const BuiltinArguments& args) { |
| if (StartsWith(args[1], "ctl.")) { |
| return Error() |
| << "Cannot set ctl. properties from init; call the Service functions directly"; |
| } |
| if (args[1] == kRestoreconProperty) { |
| return Error() << "Cannot set '" << kRestoreconProperty |
| << "' from init; use the restorecon builtin directly"; |
| } |
| |
| SetProperty(args[1], args[2]); |
| return {}; |
| } |
| |
| static Result<void> do_setrlimit(const BuiltinArguments& args) { |
| auto rlimit = ParseRlimit(args.args); |
| if (!rlimit.ok()) return rlimit.error(); |
| |
| if (setrlimit(rlimit->first, &rlimit->second) == -1) { |
| return ErrnoError() << "setrlimit failed"; |
| } |
| return {}; |
| } |
| |
| static Result<void> do_start(const BuiltinArguments& args) { |
| Service* svc = ServiceList::GetInstance().FindService(args[1]); |
| if (!svc) return Error() << "service " << args[1] << " not found"; |
| errno = 0; |
| if (auto result = svc->Start(); !result.ok()) { |
| return ErrorIgnoreEnoent() << "Could not start service: " << result.error(); |
| } |
| return {}; |
| } |
| |
| static Result<void> do_stop(const BuiltinArguments& args) { |
| Service* svc = ServiceList::GetInstance().FindService(args[1]); |
| if (!svc) return Error() << "service " << args[1] << " not found"; |
| svc->Stop(); |
| return {}; |
| } |
| |
| static Result<void> do_restart(const BuiltinArguments& args) { |
| bool only_if_running = false; |
| if (args.size() == 3) { |
| if (args[1] == "--only-if-running") { |
| only_if_running = true; |
| } else { |
| return Error() << "Unknown argument to restart: " << args[1]; |
| } |
| } |
| |
| const auto& classname = args[args.size() - 1]; |
| Service* svc = ServiceList::GetInstance().FindService(classname); |
| if (!svc) return Error() << "service " << classname << " not found"; |
| if (only_if_running && !svc->IsRunning()) { |
| return {}; |
| } |
| svc->Restart(); |
| return {}; |
| } |
| |
| static Result<void> do_trigger(const BuiltinArguments& args) { |
| ActionManager::GetInstance().QueueEventTrigger(args[1]); |
| return {}; |
| } |
| |
| static int MakeSymlink(const std::string& target, const std::string& linkpath) { |
| std::string secontext; |
| // Passing 0 for mode should work. |
| if (SelabelLookupFileContext(linkpath, 0, &secontext) && !secontext.empty()) { |
| setfscreatecon(secontext.c_str()); |
| } |
| |
| int rc = symlink(target.c_str(), linkpath.c_str()); |
| |
| if (!secontext.empty()) { |
| int save_errno = errno; |
| setfscreatecon(nullptr); |
| errno = save_errno; |
| } |
| |
| return rc; |
| } |
| |
| static Result<void> do_symlink(const BuiltinArguments& args) { |
| if (MakeSymlink(args[1], args[2]) < 0) { |
| // The symlink builtin is often used to create symlinks for older devices to be backwards |
| // compatible with new paths, therefore we skip reporting this error. |
| return ErrnoErrorIgnoreEnoent() << "symlink() failed"; |
| } |
| return {}; |
| } |
| |
| static Result<void> do_rm(const BuiltinArguments& args) { |
| if (unlink(args[1].c_str()) < 0) { |
| return ErrnoError() << "unlink() failed"; |
| } |
| return {}; |
| } |
| |
| static Result<void> do_rmdir(const BuiltinArguments& args) { |
| if (rmdir(args[1].c_str()) < 0) { |
| return ErrnoError() << "rmdir() failed"; |
| } |
| return {}; |
| } |
| |
| static Result<void> do_sysclktz(const BuiltinArguments& args) { |
| struct timezone tz = {}; |
| if (!android::base::ParseInt(args[1], &tz.tz_minuteswest)) { |
| return Error() << "Unable to parse mins_west_of_gmt"; |
| } |
| |
| if (settimeofday(nullptr, &tz) == -1) { |
| return ErrnoError() << "settimeofday() failed"; |
| } |
| return {}; |
| } |
| |
| static Result<void> do_verity_update_state(const BuiltinArguments& args) { |
| int mode; |
| if (!fs_mgr_load_verity_state(&mode)) { |
| return Error() << "fs_mgr_load_verity_state() failed"; |
| } |
| |
| Fstab fstab; |
| if (!ReadDefaultFstab(&fstab)) { |
| return Error() << "Failed to read default fstab"; |
| } |
| |
| for (const auto& entry : fstab) { |
| if (!fs_mgr_is_verity_enabled(entry)) { |
| continue; |
| } |
| |
| // To be consistent in vboot 1.0 and vboot 2.0 (AVB), use "system" for the partition even |
| // for system as root, so it has property [partition.system.verified]. |
| std::string partition = entry.mount_point == "/" ? "system" : Basename(entry.mount_point); |
| SetProperty("partition." + partition + ".verified", std::to_string(mode)); |
| |
| auto hashtree_info = fs_mgr_get_hashtree_info(entry); |
| if (hashtree_info) { |
| SetProperty("partition." + partition + ".verified.hash_alg", hashtree_info->algorithm); |
| SetProperty("partition." + partition + ".verified.root_digest", |
| hashtree_info->root_digest); |
| SetProperty("partition." + partition + ".verified.check_at_most_once", |
| hashtree_info->check_at_most_once ? "1" : "0"); |
| } |
| } |
| |
| return {}; |
| } |
| |
| static Result<void> do_write(const BuiltinArguments& args) { |
| if (auto result = WriteFile(args[1], args[2]); !result.ok()) { |
| return ErrorIgnoreEnoent() |
| << "Unable to write to file '" << args[1] << "': " << result.error(); |
| } |
| |
| return {}; |
| } |
| |
| static Result<void> readahead_file(const std::string& filename, bool fully) { |
| android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(filename.c_str(), O_RDONLY | O_CLOEXEC))); |
| if (fd == -1) { |
| return ErrnoError() << "Error opening file"; |
| } |
| if (posix_fadvise(fd.get(), 0, 0, POSIX_FADV_WILLNEED)) { |
| return ErrnoError() << "Error posix_fadvise file"; |
| } |
| if (readahead(fd.get(), 0, std::numeric_limits<size_t>::max())) { |
| return ErrnoError() << "Error readahead file"; |
| } |
| if (fully) { |
| char buf[BUFSIZ]; |
| ssize_t n; |
| while ((n = TEMP_FAILURE_RETRY(read(fd.get(), &buf[0], sizeof(buf)))) > 0) { |
| } |
| if (n != 0) { |
| return ErrnoError() << "Error reading file"; |
| } |
| } |
| return {}; |
| } |
| |
| static Result<void> do_readahead(const BuiltinArguments& args) { |
| struct stat sb; |
| |
| if (stat(args[1].c_str(), &sb)) { |
| return ErrnoError() << "Error opening " << args[1]; |
| } |
| |
| bool readfully = false; |
| if (args.size() == 3 && args[2] == "--fully") { |
| readfully = true; |
| } |
| // We will do readahead in a forked process in order not to block init |
| // since it may block while it reads the |
| // filesystem metadata needed to locate the requested blocks. This |
| // occurs frequently with ext[234] on large files using indirect blocks |
| // instead of extents, giving the appearance that the call blocks until |
| // the requested data has been read. |
| pid_t pid = fork(); |
| if (pid == 0) { |
| if (setpriority(PRIO_PROCESS, 0, static_cast<int>(ANDROID_PRIORITY_LOWEST)) != 0) { |
| PLOG(WARNING) << "setpriority failed"; |
| } |
| if (android_set_ioprio(0, IoSchedClass_IDLE, 7)) { |
| PLOG(WARNING) << "ioprio_get failed"; |
| } |
| android::base::Timer t; |
| if (S_ISREG(sb.st_mode)) { |
| if (auto result = readahead_file(args[1], readfully); !result.ok()) { |
| LOG(WARNING) << "Unable to readahead '" << args[1] << "': " << result.error(); |
| _exit(EXIT_FAILURE); |
| } |
| } else if (S_ISDIR(sb.st_mode)) { |
| char* paths[] = {const_cast<char*>(args[1].data()), nullptr}; |
| std::unique_ptr<FTS, decltype(&fts_close)> fts( |
| fts_open(paths, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr), fts_close); |
| if (!fts) { |
| PLOG(ERROR) << "Error opening directory: " << args[1]; |
| _exit(EXIT_FAILURE); |
| } |
| // Traverse the entire hierarchy and do readahead |
| for (FTSENT* ftsent = fts_read(fts.get()); ftsent != nullptr; |
| ftsent = fts_read(fts.get())) { |
| if (ftsent->fts_info & FTS_F) { |
| const std::string filename = ftsent->fts_accpath; |
| if (auto result = readahead_file(filename, readfully); !result.ok()) { |
| LOG(WARNING) |
| << "Unable to readahead '" << filename << "': " << result.error(); |
| } |
| } |
| } |
| } |
| LOG(INFO) << "Readahead " << args[1] << " took " << t << " asynchronously"; |
| _exit(0); |
| } else if (pid < 0) { |
| return ErrnoError() << "Fork failed"; |
| } |
| return {}; |
| } |
| |
| static Result<void> do_copy(const BuiltinArguments& args) { |
| auto file_contents = ReadFile(args[1]); |
| if (!file_contents.ok()) { |
| return Error() << "Could not read input file '" << args[1] << "': " << file_contents.error(); |
| } |
| if (auto result = WriteFile(args[2], *file_contents); !result.ok()) { |
| return Error() << "Could not write to output file '" << args[2] << "': " << result.error(); |
| } |
| |
| return {}; |
| } |
| |
| static Result<void> do_copy_per_line(const BuiltinArguments& args) { |
| std::string file_contents; |
| if (!android::base::ReadFileToString(args[1], &file_contents, true)) { |
| return Error() << "Could not read input file '" << args[1] << "'"; |
| } |
| auto lines = Split(file_contents, "\n"); |
| for (const auto& line : lines) { |
| auto result = WriteFile(args[2], line); |
| if (!result.ok()) { |
| LOG(VERBOSE) << "Could not write to output file '" << args[2] << "' with '" << line |
| << "' : " << result.error(); |
| } |
| } |
| |
| return {}; |
| } |
| |
| static Result<void> do_chown(const BuiltinArguments& args) { |
| auto uid = DecodeUid(args[1]); |
| if (!uid.ok()) { |
| return Error() << "Unable to decode UID for '" << args[1] << "': " << uid.error(); |
| } |
| |
| // GID is optional and pushes the index of path out by one if specified. |
| const std::string& path = (args.size() == 4) ? args[3] : args[2]; |
| Result<gid_t> gid = -1; |
| |
| if (args.size() == 4) { |
| gid = DecodeUid(args[2]); |
| if (!gid.ok()) { |
| return Error() << "Unable to decode GID for '" << args[2] << "': " << gid.error(); |
| } |
| } |
| |
| if (lchown(path.c_str(), *uid, *gid) == -1) { |
| return ErrnoErrorIgnoreEnoent() << "lchown() failed"; |
| } |
| |
| return {}; |
| } |
| |
| static mode_t get_mode(const char *s) { |
| mode_t mode = 0; |
| while (*s) { |
| if (*s >= '0' && *s <= '7') { |
| mode = (mode<<3) | (*s-'0'); |
| } else { |
| return -1; |
| } |
| s++; |
| } |
| return mode; |
| } |
| |
| static Result<void> do_chmod(const BuiltinArguments& args) { |
| mode_t mode = get_mode(args[1].c_str()); |
| if (fchmodat(AT_FDCWD, args[2].c_str(), mode, AT_SYMLINK_NOFOLLOW) < 0) { |
| return ErrnoErrorIgnoreEnoent() << "fchmodat() failed"; |
| } |
| return {}; |
| } |
| |
| static Result<void> do_restorecon(const BuiltinArguments& args) { |
| auto restorecon_info = ParseRestorecon(args.args); |
| if (!restorecon_info.ok()) { |
| return restorecon_info.error(); |
| } |
| |
| const auto& [flag, paths] = *restorecon_info; |
| |
| int ret = 0; |
| for (const auto& path : paths) { |
| if (selinux_android_restorecon(path.c_str(), flag) < 0) { |
| ret = errno; |
| } |
| } |
| |
| if (ret) return ErrnoErrorIgnoreEnoent() << "selinux_android_restorecon() failed"; |
| return {}; |
| } |
| |
| static Result<void> do_restorecon_recursive(const BuiltinArguments& args) { |
| std::vector<std::string> non_const_args(args.args); |
| non_const_args.insert(std::next(non_const_args.begin()), "--recursive"); |
| return do_restorecon({.args = std::move(non_const_args), .context = args.context}); |
| } |
| |
| static Result<void> do_loglevel(const BuiltinArguments& args) { |
| // TODO: support names instead/as well? |
| int log_level = -1; |
| android::base::ParseInt(args[1], &log_level); |
| android::base::LogSeverity severity; |
| switch (log_level) { |
| case 7: severity = android::base::DEBUG; break; |
| case 6: severity = android::base::INFO; break; |
| case 5: |
| case 4: severity = android::base::WARNING; break; |
| case 3: severity = android::base::ERROR; break; |
| case 2: |
| case 1: |
| case 0: severity = android::base::FATAL; break; |
| default: |
| return Error() << "invalid log level " << log_level; |
| } |
| android::base::SetMinimumLogSeverity(severity); |
| return {}; |
| } |
| |
| static Result<void> do_load_persist_props(const BuiltinArguments& args) { |
| SendLoadPersistentPropertiesMessage(); |
| |
| start_waiting_for_property("ro.persistent_properties.ready", "true"); |
| return {}; |
| } |
| |
| static Result<void> do_load_system_props(const BuiltinArguments& args) { |
| LOG(INFO) << "deprecated action `load_system_props` called."; |
| return {}; |
| } |
| |
| static Result<void> do_wait(const BuiltinArguments& args) { |
| auto timeout = kCommandRetryTimeout; |
| if (args.size() == 3) { |
| double timeout_double; |
| if (!android::base::ParseDouble(args[2], &timeout_double, 0)) { |
| return Error() << "failed to parse timeout"; |
| } |
| timeout = std::chrono::duration_cast<std::chrono::nanoseconds>( |
| std::chrono::duration<double>(timeout_double)); |
| } |
| |
| if (wait_for_file(args[1].c_str(), timeout) != 0) { |
| return Error() << "wait_for_file() failed"; |
| } |
| |
| return {}; |
| } |
| |
| static Result<void> do_wait_for_prop(const BuiltinArguments& args) { |
| const char* name = args[1].c_str(); |
| const char* value = args[2].c_str(); |
| size_t value_len = strlen(value); |
| |
| if (!IsLegalPropertyName(name)) { |
| return Error() << "IsLegalPropertyName(" << name << ") failed"; |
| } |
| if (value_len >= PROP_VALUE_MAX) { |
| return Error() << "value too long"; |
| } |
| if (!start_waiting_for_property(name, value)) { |
| return Error() << "already waiting for a property"; |
| } |
| return {}; |
| } |
| |
| static bool is_file_crypto() { |
| return android::base::GetProperty("ro.crypto.type", "") == "file"; |
| } |
| |
| static Result<void> ExecWithFunctionOnFailure(const std::vector<std::string>& args, |
| std::function<void(const std::string&)> function) { |
| auto service = Service::MakeTemporaryOneshotService(args); |
| if (!service.ok()) { |
| function("MakeTemporaryOneshotService failed: " + service.error().message()); |
| } |
| (*service)->AddReapCallback([function](const siginfo_t& siginfo) { |
| if (siginfo.si_code != CLD_EXITED || siginfo.si_status != 0) { |
| function(StringPrintf("Exec service failed, status %d", siginfo.si_status)); |
| } |
| }); |
| if (auto result = (*service)->ExecStart(); !result.ok()) { |
| function("ExecStart failed: " + result.error().message()); |
| } |
| ServiceList::GetInstance().AddService(std::move(*service)); |
| return {}; |
| } |
| |
| static Result<void> ExecVdcRebootOnFailure(const std::string& vdc_arg) { |
| bool should_reboot_into_recovery = true; |
| auto reboot_reason = vdc_arg + "_failed"; |
| if (android::sysprop::InitProperties::userspace_reboot_in_progress().value_or(false)) { |
| should_reboot_into_recovery = false; |
| reboot_reason = "userspace_failed," + vdc_arg; |
| } |
| |
| auto reboot = [reboot_reason, should_reboot_into_recovery](const std::string& message) { |
| // TODO (b/122850122): support this in gsi |
| if (should_reboot_into_recovery) { |
| if (IsFbeEnabled() && !android::gsi::IsGsiRunning()) { |
| LOG(ERROR) << message << ": Rebooting into recovery, reason: " << reboot_reason; |
| if (auto result = reboot_into_recovery( |
| {"--prompt_and_wipe_data", "--reason="s + reboot_reason}); |
| !result.ok()) { |
| LOG(FATAL) << "Could not reboot into recovery: " << result.error(); |
| } |
| } else { |
| LOG(ERROR) << "Failure (reboot suppressed): " << reboot_reason; |
| } |
| } else { |
| LOG(ERROR) << message << ": rebooting, reason: " << reboot_reason; |
| trigger_shutdown("reboot," + reboot_reason); |
| } |
| }; |
| |
| std::vector<std::string> args = {"exec", "/system/bin/vdc", "--wait", "cryptfs", vdc_arg}; |
| return ExecWithFunctionOnFailure(args, reboot); |
| } |
| |
| static Result<void> do_remount_userdata(const BuiltinArguments& args) { |
| if (initial_mount_fstab_return_code == -1) { |
| return Error() << "Calling remount_userdata too early"; |
| } |
| Fstab fstab; |
| if (!ReadDefaultFstab(&fstab)) { |
| // TODO(b/135984674): should we reboot here? |
| return Error() << "Failed to read fstab"; |
| } |
| // TODO(b/135984674): check that fstab contains /data. |
| if (auto rc = fs_mgr_remount_userdata_into_checkpointing(&fstab); rc < 0) { |
| std::string proc_mounts_output; |
| android::base::ReadFileToString("/proc/mounts", &proc_mounts_output, true); |
| android::base::WriteStringToFile(proc_mounts_output, |
| "/metadata/userspacereboot/mount_info.txt"); |
| trigger_shutdown("reboot,mount_userdata_failed"); |
| } |
| if (auto result = queue_fs_event(initial_mount_fstab_return_code); !result.ok()) { |
| return Error() << "queue_fs_event() failed: " << result.error(); |
| } |
| return {}; |
| } |
| |
| static Result<void> do_installkey(const BuiltinArguments& args) { |
| if (!is_file_crypto()) return {}; |
| |
| auto unencrypted_dir = args[1] + fscrypt_unencrypted_folder; |
| if (!make_dir(unencrypted_dir, 0700) && errno != EEXIST) { |
| return ErrnoError() << "Failed to create " << unencrypted_dir; |
| } |
| return ExecVdcRebootOnFailure("enablefilecrypto"); |
| } |
| |
| static Result<void> do_init_user0(const BuiltinArguments& args) { |
| return ExecVdcRebootOnFailure("init_user0"); |
| } |
| |
| static Result<void> do_mark_post_data(const BuiltinArguments& args) { |
| ServiceList::GetInstance().MarkPostData(); |
| |
| return {}; |
| } |
| |
| static Result<void> GenerateLinkerConfiguration() { |
| const char* linkerconfig_binary = "/apex/com.android.runtime/bin/linkerconfig"; |
| const char* linkerconfig_target = "/linkerconfig"; |
| const char* arguments[] = {linkerconfig_binary, "--target", linkerconfig_target}; |
| |
| if (logwrap_fork_execvp(arraysize(arguments), arguments, nullptr, false, LOG_KLOG, false, |
| nullptr) != 0) { |
| return ErrnoError() << "failed to execute linkerconfig"; |
| } |
| |
| auto current_mount_ns = GetCurrentMountNamespace(); |
| if (!current_mount_ns.ok()) { |
| return current_mount_ns.error(); |
| } |
| if (*current_mount_ns == NS_DEFAULT) { |
| SetDefaultMountNamespaceReady(); |
| } |
| |
| LOG(INFO) << "linkerconfig generated " << linkerconfig_target |
| << " with mounted APEX modules info"; |
| |
| return {}; |
| } |
| |
| static Result<void> MountLinkerConfigForDefaultNamespace() { |
| // No need to mount linkerconfig for default mount namespace if the path does not exist (which |
| // would mean it is already mounted) |
| if (access("/linkerconfig/default", 0) != 0) { |
| return {}; |
| } |
| |
| if (mount("/linkerconfig/default", "/linkerconfig", nullptr, MS_BIND | MS_REC, nullptr) != 0) { |
| return ErrnoError() << "Failed to mount linker configuration for default mount namespace."; |
| } |
| |
| return {}; |
| } |
| static Result<void> do_update_linker_config(const BuiltinArguments&) { |
| return GenerateLinkerConfiguration(); |
| } |
| |
| /* |
| * Creates a directory under /data/misc/apexdata/ for each APEX. |
| */ |
| static void create_apex_data_dirs() { |
| for (const auto& name : GetApexListFrom("/apex")) { |
| auto path = "/data/misc/apexdata/" + name; |
| auto options = MkdirOptions{path, 0771, AID_ROOT, AID_SYSTEM, FscryptAction::kNone, "ref"}; |
| auto result = make_dir_with_options(options); |
| if (!result.ok()) { |
| LOG(ERROR) << result.error(); |
| } |
| } |
| } |
| |
| static Result<void> do_perform_apex_config(const BuiltinArguments& args) { |
| bool bootstrap = false; |
| if (args.size() == 2) { |
| if (args[1] != "--bootstrap") { |
| return Error() << "Unexpected argument: " << args[1]; |
| } |
| bootstrap = true; |
| } |
| |
| if (!bootstrap) { |
| create_apex_data_dirs(); |
| } |
| |
| auto parse_result = ParseRcScriptsFromAllApexes(bootstrap); |
| if (!parse_result.ok()) { |
| return parse_result.error(); |
| } |
| |
| auto update_linker_config = do_update_linker_config(args); |
| if (!update_linker_config.ok()) { |
| return update_linker_config.error(); |
| } |
| |
| if (!bootstrap) { |
| ServiceList::GetInstance().StartDelayedServices(); |
| } |
| return {}; |
| } |
| |
| static Result<void> do_enter_default_mount_ns(const BuiltinArguments& args) { |
| if (auto result = SwitchToMountNamespaceIfNeeded(NS_DEFAULT); !result.ok()) { |
| return result.error(); |
| } |
| if (auto result = MountLinkerConfigForDefaultNamespace(); !result.ok()) { |
| return result.error(); |
| } |
| LOG(INFO) << "Switched to default mount namespace"; |
| return {}; |
| } |
| |
| // Builtin-function-map start |
| const BuiltinFunctionMap& GetBuiltinFunctionMap() { |
| constexpr std::size_t kMax = std::numeric_limits<std::size_t>::max(); |
| // clang-format off |
| static const BuiltinFunctionMap builtin_functions = { |
| {"bootchart", {1, 1, {false, do_bootchart}}}, |
| {"chmod", {2, 2, {true, do_chmod}}}, |
| {"chown", {2, 3, {true, do_chown}}}, |
| {"class_reset", {1, 1, {false, do_class_reset}}}, |
| {"class_restart", {1, 2, {false, do_class_restart}}}, |
| {"class_start", {1, 1, {false, do_class_start}}}, |
| {"class_stop", {1, 1, {false, do_class_stop}}}, |
| {"copy", {2, 2, {true, do_copy}}}, |
| {"copy_per_line", {2, 2, {true, do_copy_per_line}}}, |
| {"domainname", {1, 1, {true, do_domainname}}}, |
| {"enable", {1, 1, {false, do_enable}}}, |
| {"exec", {1, kMax, {false, do_exec}}}, |
| {"exec_background", {1, kMax, {false, do_exec_background}}}, |
| {"exec_start", {1, 1, {false, do_exec_start}}}, |
| {"export", {2, 2, {false, do_export}}}, |
| {"hostname", {1, 1, {true, do_hostname}}}, |
| {"ifup", {1, 1, {true, do_ifup}}}, |
| {"init_user0", {0, 0, {false, do_init_user0}}}, |
| {"insmod", {1, kMax, {true, do_insmod}}}, |
| {"installkey", {1, 1, {false, do_installkey}}}, |
| {"interface_restart", {1, 1, {false, do_interface_restart}}}, |
| {"interface_start", {1, 1, {false, do_interface_start}}}, |
| {"interface_stop", {1, 1, {false, do_interface_stop}}}, |
| {"load_exports", {1, 1, {false, do_load_exports}}}, |
| {"load_persist_props", {0, 0, {false, do_load_persist_props}}}, |
| {"load_system_props", {0, 0, {false, do_load_system_props}}}, |
| {"loglevel", {1, 1, {false, do_loglevel}}}, |
| {"mark_post_data", {0, 0, {false, do_mark_post_data}}}, |
| {"mkdir", {1, 6, {true, do_mkdir}}}, |
| // TODO: Do mount operations in vendor_init. |
| // mount_all is currently too complex to run in vendor_init as it queues action triggers, |
| // imports rc scripts, etc. It should be simplified and run in vendor_init context. |
| // mount and umount are run in the same context as mount_all for symmetry. |
| {"mount_all", {0, kMax, {false, do_mount_all}}}, |
| {"mount", {3, kMax, {false, do_mount}}}, |
| {"perform_apex_config", {0, 1, {false, do_perform_apex_config}}}, |
| {"umount", {1, 1, {false, do_umount}}}, |
| {"umount_all", {0, 1, {false, do_umount_all}}}, |
| {"update_linker_config", {0, 0, {false, do_update_linker_config}}}, |
| {"readahead", {1, 2, {true, do_readahead}}}, |
| {"remount_userdata", {0, 0, {false, do_remount_userdata}}}, |
| {"restart", {1, 2, {false, do_restart}}}, |
| {"restorecon", {1, kMax, {true, do_restorecon}}}, |
| {"restorecon_recursive", {1, kMax, {true, do_restorecon_recursive}}}, |
| {"rm", {1, 1, {true, do_rm}}}, |
| {"rmdir", {1, 1, {true, do_rmdir}}}, |
| {"setprop", {2, 2, {true, do_setprop}}}, |
| {"setrlimit", {3, 3, {false, do_setrlimit}}}, |
| {"start", {1, 1, {false, do_start}}}, |
| {"stop", {1, 1, {false, do_stop}}}, |
| {"swapon_all", {0, 1, {false, do_swapon_all}}}, |
| {"enter_default_mount_ns", {0, 0, {false, do_enter_default_mount_ns}}}, |
| {"symlink", {2, 2, {true, do_symlink}}}, |
| {"sysclktz", {1, 1, {false, do_sysclktz}}}, |
| {"trigger", {1, 1, {false, do_trigger}}}, |
| {"verity_update_state", {0, 0, {false, do_verity_update_state}}}, |
| {"wait", {1, 2, {true, do_wait}}}, |
| {"wait_for_prop", {2, 2, {false, do_wait_for_prop}}}, |
| {"write", {2, 2, {true, do_write}}}, |
| }; |
| // clang-format on |
| return builtin_functions; |
| } |
| // Builtin-function-map end |
| |
| } // namespace init |
| } // namespace android |