Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "service.h" |
| 18 | |
| 19 | #include <fcntl.h> |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 20 | #include <inttypes.h> |
Jorge Lucangeli Obes | 24b2913 | 2016-10-27 10:33:03 -0400 | [diff] [blame] | 21 | #include <linux/securebits.h> |
Jorge Lucangeli Obes | 1b3fa3d | 2016-04-21 15:35:09 -0700 | [diff] [blame] | 22 | #include <sched.h> |
Jorge Lucangeli Obes | 1b3fa3d | 2016-04-21 15:35:09 -0700 | [diff] [blame] | 23 | #include <sys/prctl.h> |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 24 | #include <sys/stat.h> |
Vitalii Tomkiv | 081705c | 2016-05-18 17:36:30 -0700 | [diff] [blame] | 25 | #include <sys/time.h> |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 26 | #include <termios.h> |
Dan Albert | af9ba4d | 2015-08-11 16:37:04 -0700 | [diff] [blame] | 27 | #include <unistd.h> |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 28 | |
Elliott Hughes | 4f71319 | 2015-12-04 22:00:26 -0800 | [diff] [blame] | 29 | #include <android-base/file.h> |
Tom Cherry | 3f5eaae5 | 2017-04-06 16:30:22 -0700 | [diff] [blame] | 30 | #include <android-base/logging.h> |
Elliott Hughes | dc80312 | 2018-05-24 18:00:39 -0700 | [diff] [blame] | 31 | #include <android-base/properties.h> |
Tom Cherry | 60971e6 | 2019-09-10 10:40:47 -0700 | [diff] [blame] | 32 | #include <android-base/scopeguard.h> |
Elliott Hughes | 4f71319 | 2015-12-04 22:00:26 -0800 | [diff] [blame] | 33 | #include <android-base/stringprintf.h> |
Elliott Hughes | f86b5a6 | 2016-06-24 15:12:21 -0700 | [diff] [blame] | 34 | #include <android-base/strings.h> |
Tom Cherry | 2e4c85f | 2019-07-09 13:33:36 -0700 | [diff] [blame] | 35 | #include <cutils/sockets.h> |
Tom Cherry | 3f5eaae5 | 2017-04-06 16:30:22 -0700 | [diff] [blame] | 36 | #include <processgroup/processgroup.h> |
| 37 | #include <selinux/selinux.h> |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 38 | |
Suren Baghdasaryan | c29c2ba | 2019-10-22 17:18:42 -0700 | [diff] [blame] | 39 | #include "lmkd_service.h" |
Tom Cherry | 2aeb1ad | 2019-06-26 10:46:20 -0700 | [diff] [blame] | 40 | #include "service_list.h" |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 41 | #include "util.h" |
| 42 | |
Tom Cherry | a2f9136 | 2020-02-20 10:50:00 -0800 | [diff] [blame] | 43 | #ifdef INIT_FULL_SOURCES |
Jiyong Park | d7f7c20 | 2019-05-10 21:12:15 +0900 | [diff] [blame] | 44 | #include <ApexProperties.sysprop.h> |
Tom Cherry | d89ed13 | 2019-11-19 14:19:40 -0800 | [diff] [blame] | 45 | #include <android/api-level.h> |
Tom Cherry | de6bd50 | 2018-02-13 16:50:08 -0800 | [diff] [blame] | 46 | |
Jiyong Park | 6866041 | 2019-01-16 23:00:59 +0900 | [diff] [blame] | 47 | #include "mount_namespace.h" |
Woody Lin | 45215ae | 2019-12-26 22:22:28 +0800 | [diff] [blame] | 48 | #include "reboot_utils.h" |
Tom Cherry | d89ed13 | 2019-11-19 14:19:40 -0800 | [diff] [blame] | 49 | #include "selinux.h" |
Tom Cherry | de6bd50 | 2018-02-13 16:50:08 -0800 | [diff] [blame] | 50 | #else |
| 51 | #include "host_init_stubs.h" |
| 52 | #endif |
| 53 | |
James Hawkins | e78ea77 | 2017-03-24 11:43:02 -0700 | [diff] [blame] | 54 | using android::base::boot_clock; |
Woody Lin | ef9d460 | 2021-01-20 12:28:33 +0800 | [diff] [blame] | 55 | using android::base::GetBoolProperty; |
Tom Cherry | 81f5d3e | 2017-06-22 12:53:17 -0700 | [diff] [blame] | 56 | using android::base::GetProperty; |
| 57 | using android::base::Join; |
Tom Cherry | 60971e6 | 2019-09-10 10:40:47 -0700 | [diff] [blame] | 58 | using android::base::make_scope_guard; |
Tom Cherry | c88d8f9 | 2019-08-19 15:21:25 -0700 | [diff] [blame] | 59 | using android::base::SetProperty; |
Tom Cherry | 81f5d3e | 2017-06-22 12:53:17 -0700 | [diff] [blame] | 60 | using android::base::StartsWith; |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 61 | using android::base::StringPrintf; |
| 62 | using android::base::WriteStringToFile; |
| 63 | |
Tom Cherry | 81f5d3e | 2017-06-22 12:53:17 -0700 | [diff] [blame] | 64 | namespace android { |
| 65 | namespace init { |
| 66 | |
Tom Cherry | aead51b | 2018-04-20 16:18:12 -0700 | [diff] [blame] | 67 | static Result<std::string> ComputeContextFromExecutable(const std::string& service_path) { |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 68 | std::string computed_context; |
| 69 | |
| 70 | char* raw_con = nullptr; |
| 71 | char* raw_filecon = nullptr; |
| 72 | |
| 73 | if (getcon(&raw_con) == -1) { |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 74 | return Error() << "Could not get security context"; |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 75 | } |
Elliott Hughes | d92c6a1 | 2020-12-08 22:30:17 -0800 | [diff] [blame] | 76 | std::unique_ptr<char, decltype(&freecon)> mycon(raw_con, freecon); |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 77 | |
| 78 | if (getfilecon(service_path.c_str(), &raw_filecon) == -1) { |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 79 | return Error() << "Could not get file context"; |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 80 | } |
Elliott Hughes | d92c6a1 | 2020-12-08 22:30:17 -0800 | [diff] [blame] | 81 | std::unique_ptr<char, decltype(&freecon)> filecon(raw_filecon, freecon); |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 82 | |
| 83 | char* new_con = nullptr; |
| 84 | int rc = security_compute_create(mycon.get(), filecon.get(), |
| 85 | string_to_security_class("process"), &new_con); |
| 86 | if (rc == 0) { |
| 87 | computed_context = new_con; |
| 88 | free(new_con); |
| 89 | } |
| 90 | if (rc == 0 && computed_context == mycon.get()) { |
Nick Kralevich | 1ea19eb | 2017-08-25 12:08:57 -0700 | [diff] [blame] | 91 | return Error() << "File " << service_path << "(labeled \"" << filecon.get() |
| 92 | << "\") has incorrect label or no domain transition from " << mycon.get() |
| 93 | << " to another SELinux domain defined. Have you configured your " |
| 94 | "service correctly? https://source.android.com/security/selinux/" |
Steven Moreland | 9e987cb | 2020-04-09 12:45:03 -0700 | [diff] [blame] | 95 | "device-policy#label_new_services_and_address_denials. Note: this " |
| 96 | "error shows up even in permissive mode in order to make auditing " |
| 97 | "denials possible."; |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 98 | } |
| 99 | if (rc < 0) { |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 100 | return Error() << "Could not get process context"; |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 101 | } |
| 102 | return computed_context; |
| 103 | } |
| 104 | |
Tom Cherry | 8f38048 | 2018-04-17 14:48:44 -0700 | [diff] [blame] | 105 | static bool ExpandArgsAndExecv(const std::vector<std::string>& args, bool sigstop) { |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 106 | std::vector<std::string> expanded_args; |
Tom Cherry | 5e405ca | 2017-09-11 16:08:54 -0700 | [diff] [blame] | 107 | std::vector<char*> c_strings; |
| 108 | |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 109 | expanded_args.resize(args.size()); |
Tom Cherry | 5e405ca | 2017-09-11 16:08:54 -0700 | [diff] [blame] | 110 | c_strings.push_back(const_cast<char*>(args[0].data())); |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 111 | for (std::size_t i = 1; i < args.size(); ++i) { |
Tom Cherry | c5cf85d | 2019-07-31 13:59:15 -0700 | [diff] [blame] | 112 | auto expanded_arg = ExpandProps(args[i]); |
Bernie Innocenti | cecebbb | 2020-02-06 03:49:33 +0900 | [diff] [blame] | 113 | if (!expanded_arg.ok()) { |
Tom Cherry | c5cf85d | 2019-07-31 13:59:15 -0700 | [diff] [blame] | 114 | LOG(FATAL) << args[0] << ": cannot expand arguments': " << expanded_arg.error(); |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 115 | } |
Tom Cherry | c5cf85d | 2019-07-31 13:59:15 -0700 | [diff] [blame] | 116 | expanded_args[i] = *expanded_arg; |
Tom Cherry | 5e405ca | 2017-09-11 16:08:54 -0700 | [diff] [blame] | 117 | c_strings.push_back(expanded_args[i].data()); |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 118 | } |
Tom Cherry | 5e405ca | 2017-09-11 16:08:54 -0700 | [diff] [blame] | 119 | c_strings.push_back(nullptr); |
| 120 | |
Tom Cherry | 8f38048 | 2018-04-17 14:48:44 -0700 | [diff] [blame] | 121 | if (sigstop) { |
| 122 | kill(getpid(), SIGSTOP); |
| 123 | } |
| 124 | |
Tom Cherry | 5e405ca | 2017-09-11 16:08:54 -0700 | [diff] [blame] | 125 | return execv(c_strings[0], c_strings.data()) == 0; |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 126 | } |
| 127 | |
Tom Cherry | 5938379 | 2017-07-26 16:09:09 -0700 | [diff] [blame] | 128 | unsigned long Service::next_start_order_ = 1; |
Tom Cherry | 3b81f2d | 2017-07-28 14:48:41 -0700 | [diff] [blame] | 129 | bool Service::is_exec_service_running_ = false; |
David Anderson | d7f2bfb | 2022-04-05 06:53:32 +0000 | [diff] [blame] | 130 | pid_t Service::exec_service_pid_ = -1; |
David Anderson | 14f9c15 | 2022-03-15 21:55:23 -0700 | [diff] [blame] | 131 | std::chrono::time_point<std::chrono::steady_clock> Service::exec_service_started_; |
Tom Cherry | 5938379 | 2017-07-26 16:09:09 -0700 | [diff] [blame] | 132 | |
Tom Cherry | cb0f9bb | 2017-09-12 15:58:47 -0700 | [diff] [blame] | 133 | Service::Service(const std::string& name, Subcontext* subcontext_for_restart_commands, |
Nikita Ioffe | 091c4d1 | 2019-12-05 12:35:19 +0000 | [diff] [blame] | 134 | const std::vector<std::string>& args, bool from_apex) |
| 135 | : Service(name, 0, 0, 0, {}, 0, "", subcontext_for_restart_commands, args, from_apex) {} |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 136 | |
Wei Wang | 641ff0a | 2017-03-27 10:59:11 -0700 | [diff] [blame] | 137 | Service::Service(const std::string& name, unsigned flags, uid_t uid, gid_t gid, |
Tom Cherry | 247ffbf | 2019-07-08 15:09:36 -0700 | [diff] [blame] | 138 | const std::vector<gid_t>& supp_gids, int namespace_flags, |
Tom Cherry | 1cd082d | 2019-02-06 10:45:56 -0800 | [diff] [blame] | 139 | const std::string& seclabel, Subcontext* subcontext_for_restart_commands, |
Nikita Ioffe | 091c4d1 | 2019-12-05 12:35:19 +0000 | [diff] [blame] | 140 | const std::vector<std::string>& args, bool from_apex) |
Wei Wang | 641ff0a | 2017-03-27 10:59:11 -0700 | [diff] [blame] | 141 | : name_(name), |
| 142 | classnames_({"default"}), |
| 143 | flags_(flags), |
| 144 | pid_(0), |
| 145 | crash_count_(0), |
Vic Yang | e01ca4d | 2019-05-29 15:58:32 -0700 | [diff] [blame] | 146 | proc_attr_{.ioprio_class = IoSchedClass_NONE, |
| 147 | .ioprio_pri = 0, |
| 148 | .uid = uid, |
| 149 | .gid = gid, |
| 150 | .supp_gids = supp_gids, |
| 151 | .priority = 0}, |
| 152 | namespaces_{.flags = namespace_flags}, |
Wei Wang | 641ff0a | 2017-03-27 10:59:11 -0700 | [diff] [blame] | 153 | seclabel_(seclabel), |
Daniel Norman | f597fa5 | 2020-11-09 17:28:24 -0800 | [diff] [blame] | 154 | subcontext_(subcontext_for_restart_commands), |
Tom Cherry | 9cbf570 | 2018-02-13 16:24:51 -0800 | [diff] [blame] | 155 | onrestart_(false, subcontext_for_restart_commands, "<Service '" + name + "' onrestart>", 0, |
| 156 | "onrestart", {}), |
Suren Baghdasaryan | c29c2ba | 2019-10-22 17:18:42 -0700 | [diff] [blame] | 157 | oom_score_adjust_(DEFAULT_OOM_SCORE_ADJUST), |
Tom Cherry | 5938379 | 2017-07-26 16:09:09 -0700 | [diff] [blame] | 158 | start_order_(0), |
Nikita Ioffe | 091c4d1 | 2019-12-05 12:35:19 +0000 | [diff] [blame] | 159 | args_(args), |
| 160 | from_apex_(from_apex) {} |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 161 | |
| 162 | void Service::NotifyStateChange(const std::string& new_state) const { |
Tom Cherry | b27004a | 2017-03-27 16:27:30 -0700 | [diff] [blame] | 163 | if ((flags_ & SVC_TEMPORARY) != 0) { |
| 164 | // Services created by 'exec' are temporary and don't have properties tracking their state. |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 165 | return; |
| 166 | } |
| 167 | |
Tom Cherry | 1c3a53f | 2017-06-22 16:50:31 -0700 | [diff] [blame] | 168 | std::string prop_name = "init.svc." + name_; |
Tom Cherry | c88d8f9 | 2019-08-19 15:21:25 -0700 | [diff] [blame] | 169 | SetProperty(prop_name, new_state); |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 170 | |
| 171 | if (new_state == "running") { |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 172 | uint64_t start_ns = time_started_.time_since_epoch().count(); |
Tom Cherry | fed3373 | 2017-08-18 10:47:46 -0700 | [diff] [blame] | 173 | std::string boottime_property = "ro.boottime." + name_; |
| 174 | if (GetProperty(boottime_property, "").empty()) { |
Tom Cherry | c88d8f9 | 2019-08-19 15:21:25 -0700 | [diff] [blame] | 175 | SetProperty(boottime_property, std::to_string(start_ns)); |
Tom Cherry | fed3373 | 2017-08-18 10:47:46 -0700 | [diff] [blame] | 176 | } |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 177 | } |
Daniel Norman | c788771 | 2019-07-19 11:04:01 -0700 | [diff] [blame] | 178 | |
| 179 | // init.svc_debug_pid.* properties are only for tests, and should not be used |
| 180 | // on device for security checks. |
| 181 | std::string pid_property = "init.svc_debug_pid." + name_; |
| 182 | if (new_state == "running") { |
Tom Cherry | c88d8f9 | 2019-08-19 15:21:25 -0700 | [diff] [blame] | 183 | SetProperty(pid_property, std::to_string(pid_)); |
Daniel Norman | c788771 | 2019-07-19 11:04:01 -0700 | [diff] [blame] | 184 | } else if (new_state == "stopped") { |
Tom Cherry | c88d8f9 | 2019-08-19 15:21:25 -0700 | [diff] [blame] | 185 | SetProperty(pid_property, ""); |
Daniel Norman | c788771 | 2019-07-19 11:04:01 -0700 | [diff] [blame] | 186 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 187 | } |
| 188 | |
Tom Cherry | d89ed13 | 2019-11-19 14:19:40 -0800 | [diff] [blame] | 189 | void Service::KillProcessGroup(int signal, bool report_oneshot) { |
Tom Cherry | 33838b1 | 2017-05-04 11:32:36 -0700 | [diff] [blame] | 190 | // If we've already seen a successful result from killProcessGroup*(), then we have removed |
| 191 | // the cgroup already and calling these functions a second time will simply result in an error. |
| 192 | // This is true regardless of which signal was sent. |
| 193 | // These functions handle their own logging, so no additional logging is needed. |
| 194 | if (!process_cgroup_empty_) { |
| 195 | LOG(INFO) << "Sending signal " << signal << " to service '" << name_ << "' (pid " << pid_ |
| 196 | << ") process group..."; |
Tom Cherry | d89ed13 | 2019-11-19 14:19:40 -0800 | [diff] [blame] | 197 | int max_processes = 0; |
Tom Cherry | 33838b1 | 2017-05-04 11:32:36 -0700 | [diff] [blame] | 198 | int r; |
| 199 | if (signal == SIGTERM) { |
Tom Cherry | d89ed13 | 2019-11-19 14:19:40 -0800 | [diff] [blame] | 200 | r = killProcessGroupOnce(proc_attr_.uid, pid_, signal, &max_processes); |
Tom Cherry | 33838b1 | 2017-05-04 11:32:36 -0700 | [diff] [blame] | 201 | } else { |
Tom Cherry | d89ed13 | 2019-11-19 14:19:40 -0800 | [diff] [blame] | 202 | r = killProcessGroup(proc_attr_.uid, pid_, signal, &max_processes); |
| 203 | } |
| 204 | |
| 205 | if (report_oneshot && max_processes > 0) { |
| 206 | LOG(WARNING) |
| 207 | << "Killed " << max_processes |
| 208 | << " additional processes from a oneshot process group for service '" << name_ |
| 209 | << "'. This is new behavior, previously child processes would not be killed in " |
| 210 | "this case."; |
Tom Cherry | 33838b1 | 2017-05-04 11:32:36 -0700 | [diff] [blame] | 211 | } |
| 212 | |
| 213 | if (r == 0) process_cgroup_empty_ = true; |
| 214 | } |
Suren Baghdasaryan | c29c2ba | 2019-10-22 17:18:42 -0700 | [diff] [blame] | 215 | |
| 216 | if (oom_score_adjust_ != DEFAULT_OOM_SCORE_ADJUST) { |
| 217 | LmkdUnregister(name_, pid_); |
| 218 | } |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 219 | } |
| 220 | |
Vic Yang | e01ca4d | 2019-05-29 15:58:32 -0700 | [diff] [blame] | 221 | void Service::SetProcessAttributesAndCaps() { |
Jorge Lucangeli Obes | 24b2913 | 2016-10-27 10:33:03 -0400 | [diff] [blame] | 222 | // Keep capabilites on uid change. |
Vic Yang | e01ca4d | 2019-05-29 15:58:32 -0700 | [diff] [blame] | 223 | if (capabilities_ && proc_attr_.uid) { |
Luis Hector Chavez | f596551 | 2017-06-30 14:04:20 -0700 | [diff] [blame] | 224 | // If Android is running in a container, some securebits might already |
| 225 | // be locked, so don't change those. |
Ben Fennema | a724360 | 2017-07-25 14:37:21 -0700 | [diff] [blame] | 226 | unsigned long securebits = prctl(PR_GET_SECUREBITS); |
| 227 | if (securebits == -1UL) { |
Luis Hector Chavez | f596551 | 2017-06-30 14:04:20 -0700 | [diff] [blame] | 228 | PLOG(FATAL) << "prctl(PR_GET_SECUREBITS) failed for " << name_; |
| 229 | } |
| 230 | securebits |= SECBIT_KEEP_CAPS | SECBIT_KEEP_CAPS_LOCKED; |
| 231 | if (prctl(PR_SET_SECUREBITS, securebits) != 0) { |
| 232 | PLOG(FATAL) << "prctl(PR_SET_SECUREBITS) failed for " << name_; |
Jorge Lucangeli Obes | 24b2913 | 2016-10-27 10:33:03 -0400 | [diff] [blame] | 233 | } |
| 234 | } |
| 235 | |
Bernie Innocenti | cecebbb | 2020-02-06 03:49:33 +0900 | [diff] [blame] | 236 | if (auto result = SetProcessAttributes(proc_attr_); !result.ok()) { |
Vic Yang | e01ca4d | 2019-05-29 15:58:32 -0700 | [diff] [blame] | 237 | LOG(FATAL) << "cannot set attribute for " << name_ << ": " << result.error(); |
| 238 | } |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 239 | |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 240 | if (!seclabel_.empty()) { |
| 241 | if (setexeccon(seclabel_.c_str()) < 0) { |
Elliott Hughes | e18e7e5 | 2016-07-25 18:18:16 -0700 | [diff] [blame] | 242 | PLOG(FATAL) << "cannot setexeccon('" << seclabel_ << "') for " << name_; |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 243 | } |
| 244 | } |
Vic Yang | e01ca4d | 2019-05-29 15:58:32 -0700 | [diff] [blame] | 245 | |
Tom Cherry | 1cd082d | 2019-02-06 10:45:56 -0800 | [diff] [blame] | 246 | if (capabilities_) { |
| 247 | if (!SetCapsForExec(*capabilities_)) { |
Jorge Lucangeli Obes | 24b2913 | 2016-10-27 10:33:03 -0400 | [diff] [blame] | 248 | LOG(FATAL) << "cannot set capabilities for " << name_; |
| 249 | } |
Vic Yang | e01ca4d | 2019-05-29 15:58:32 -0700 | [diff] [blame] | 250 | } else if (proc_attr_.uid) { |
Luis Hector Chavez | 94fb5b0 | 2017-11-16 15:52:00 -0800 | [diff] [blame] | 251 | // Inheritable caps can be non-zero when running in a container. |
| 252 | if (!DropInheritableCaps()) { |
| 253 | LOG(FATAL) << "cannot drop inheritable caps for " << name_; |
| 254 | } |
Jorge Lucangeli Obes | 24b2913 | 2016-10-27 10:33:03 -0400 | [diff] [blame] | 255 | } |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 256 | } |
| 257 | |
Paul Crowley | c73b215 | 2018-04-13 17:38:57 +0000 | [diff] [blame] | 258 | void Service::Reap(const siginfo_t& siginfo) { |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 259 | if (!(flags_ & SVC_ONESHOT) || (flags_ & SVC_RESTART)) { |
Tom Cherry | d89ed13 | 2019-11-19 14:19:40 -0800 | [diff] [blame] | 260 | KillProcessGroup(SIGKILL, false); |
| 261 | } else { |
| 262 | // Legacy behavior from ~2007 until Android R: this else branch did not exist and we did not |
| 263 | // kill the process group in this case. |
| 264 | if (SelinuxGetVendorAndroidVersion() >= __ANDROID_API_R__) { |
| 265 | // The new behavior in Android R is to kill these process groups in all cases. The |
| 266 | // 'true' parameter instructions KillProcessGroup() to report a warning message where it |
| 267 | // detects a difference in behavior has occurred. |
| 268 | KillProcessGroup(SIGKILL, true); |
| 269 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 270 | } |
| 271 | |
Tom Cherry | 2e4c85f | 2019-07-09 13:33:36 -0700 | [diff] [blame] | 272 | // Remove any socket resources we may have created. |
| 273 | for (const auto& socket : sockets_) { |
David Anderson | 0e5ad5a | 2021-07-21 21:53:28 -0700 | [diff] [blame] | 274 | if (socket.persist) { |
| 275 | continue; |
| 276 | } |
Tom Cherry | 2e4c85f | 2019-07-09 13:33:36 -0700 | [diff] [blame] | 277 | auto path = ANDROID_SOCKET_DIR "/" + socket.name; |
| 278 | unlink(path.c_str()); |
| 279 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 280 | |
Paul Crowley | c73b215 | 2018-04-13 17:38:57 +0000 | [diff] [blame] | 281 | for (const auto& f : reap_callbacks_) { |
| 282 | f(siginfo); |
| 283 | } |
| 284 | |
Eric Biggers | d14a178 | 2021-07-22 12:56:39 -0700 | [diff] [blame] | 285 | if ((siginfo.si_code != CLD_EXITED || siginfo.si_status != 0) && on_failure_reboot_target_) { |
Tom Cherry | 60971e6 | 2019-09-10 10:40:47 -0700 | [diff] [blame] | 286 | LOG(ERROR) << "Service with 'reboot_on_failure' option failed, shutting down system."; |
Tom Cherry | 18278d2 | 2019-11-12 16:21:20 -0800 | [diff] [blame] | 287 | trigger_shutdown(*on_failure_reboot_target_); |
Tom Cherry | 60971e6 | 2019-09-10 10:40:47 -0700 | [diff] [blame] | 288 | } |
| 289 | |
Tom Cherry | 3b81f2d | 2017-07-28 14:48:41 -0700 | [diff] [blame] | 290 | if (flags_ & SVC_EXEC) UnSetExec(); |
| 291 | |
| 292 | if (flags_ & SVC_TEMPORARY) return; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 293 | |
| 294 | pid_ = 0; |
Eric Biggers | d14a178 | 2021-07-22 12:56:39 -0700 | [diff] [blame] | 295 | flags_ &= (~SVC_RUNNING); |
Tom Cherry | 5938379 | 2017-07-26 16:09:09 -0700 | [diff] [blame] | 296 | start_order_ = 0; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 297 | |
| 298 | // Oneshot processes go into the disabled state on exit, |
| 299 | // except when manually restarted. |
Martijn Coenen | 70788f9 | 2019-04-23 16:26:01 +0200 | [diff] [blame] | 300 | if ((flags_ & SVC_ONESHOT) && !(flags_ & SVC_RESTART) && !(flags_ & SVC_RESET)) { |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 301 | flags_ |= SVC_DISABLED; |
| 302 | } |
| 303 | |
| 304 | // Disabled and reset processes do not get restarted automatically. |
| 305 | if (flags_ & (SVC_DISABLED | SVC_RESET)) { |
| 306 | NotifyStateChange("stopped"); |
Tom Cherry | b27004a | 2017-03-27 16:27:30 -0700 | [diff] [blame] | 307 | return; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 308 | } |
| 309 | |
Tom Cherry | a2f9136 | 2020-02-20 10:50:00 -0800 | [diff] [blame] | 310 | #if INIT_FULL_SOURCES |
Jiyong Park | d7f7c20 | 2019-05-10 21:12:15 +0900 | [diff] [blame] | 311 | static bool is_apex_updatable = android::sysprop::ApexProperties::updatable().value_or(false); |
| 312 | #else |
| 313 | static bool is_apex_updatable = false; |
| 314 | #endif |
Kiyoung Kim | 0cbee0d | 2021-03-02 16:45:27 +0900 | [diff] [blame] | 315 | const bool is_process_updatable = !use_bootstrap_ns_ && is_apex_updatable; |
Jiyong Park | d7f7c20 | 2019-05-10 21:12:15 +0900 | [diff] [blame] | 316 | |
Woody Lin | 45215ae | 2019-12-26 22:22:28 +0800 | [diff] [blame] | 317 | // If we crash > 4 times in 'fatal_crash_window_' minutes or before boot_completed, |
Zimuzo | 88de80f | 2019-04-27 21:10:35 +0100 | [diff] [blame] | 318 | // reboot into bootloader or set crashing property |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 319 | boot_clock::time_point now = boot_clock::now(); |
Jiyong Park | d7f7c20 | 2019-05-10 21:12:15 +0900 | [diff] [blame] | 320 | if (((flags_ & SVC_CRITICAL) || is_process_updatable) && !(flags_ & SVC_RESTART)) { |
Woody Lin | ef9d460 | 2021-01-20 12:28:33 +0800 | [diff] [blame] | 321 | bool boot_completed = GetBoolProperty("sys.boot_completed", false); |
Woody Lin | 45215ae | 2019-12-26 22:22:28 +0800 | [diff] [blame] | 322 | if (now < time_crashed_ + fatal_crash_window_ || !boot_completed) { |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 323 | if (++crash_count_ > 4) { |
Woody Lin | 45215ae | 2019-12-26 22:22:28 +0800 | [diff] [blame] | 324 | auto exit_reason = boot_completed ? |
| 325 | "in " + std::to_string(fatal_crash_window_.count()) + " minutes" : |
| 326 | "before boot completed"; |
Zimuzo | c55a8c6 | 2019-01-07 10:19:02 +0000 | [diff] [blame] | 327 | if (flags_ & SVC_CRITICAL) { |
Woody Lin | ef9d460 | 2021-01-20 12:28:33 +0800 | [diff] [blame] | 328 | if (!GetBoolProperty("init.svc_debug.no_fatal." + name_, false)) { |
| 329 | // Aborts into `fatal_reboot_target_'. |
| 330 | SetFatalRebootTarget(fatal_reboot_target_); |
| 331 | LOG(FATAL) << "critical process '" << name_ << "' exited 4 times " |
| 332 | << exit_reason; |
| 333 | } |
Zimuzo | c55a8c6 | 2019-01-07 10:19:02 +0000 | [diff] [blame] | 334 | } else { |
Steven Moreland | abc5f88 | 2020-11-06 17:00:58 +0000 | [diff] [blame] | 335 | LOG(ERROR) << "process with updatable components '" << name_ |
| 336 | << "' exited 4 times " << exit_reason; |
Zimuzo | c55a8c6 | 2019-01-07 10:19:02 +0000 | [diff] [blame] | 337 | // Notifies update_verifier and apexd |
Gavin Corkery | 5d0deb5 | 2019-12-10 23:00:24 +0000 | [diff] [blame] | 338 | SetProperty("sys.init.updatable_crashing_process_name", name_); |
Nikita Ioffe | 018ddd7 | 2019-12-20 16:34:48 +0000 | [diff] [blame] | 339 | SetProperty("sys.init.updatable_crashing", "1"); |
Zimuzo | c55a8c6 | 2019-01-07 10:19:02 +0000 | [diff] [blame] | 340 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 341 | } |
| 342 | } else { |
| 343 | time_crashed_ = now; |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 344 | crash_count_ = 1; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 345 | } |
| 346 | } |
| 347 | |
| 348 | flags_ &= (~SVC_RESTART); |
| 349 | flags_ |= SVC_RESTARTING; |
| 350 | |
| 351 | // Execute all onrestart commands for this service. |
| 352 | onrestart_.ExecuteAllCommands(); |
| 353 | |
| 354 | NotifyStateChange("restarting"); |
Tom Cherry | b27004a | 2017-03-27 16:27:30 -0700 | [diff] [blame] | 355 | return; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 356 | } |
| 357 | |
| 358 | void Service::DumpState() const { |
Elliott Hughes | f86b5a6 | 2016-06-24 15:12:21 -0700 | [diff] [blame] | 359 | LOG(INFO) << "service " << name_; |
Tom Cherry | 81f5d3e | 2017-06-22 12:53:17 -0700 | [diff] [blame] | 360 | LOG(INFO) << " class '" << Join(classnames_, " ") << "'"; |
| 361 | LOG(INFO) << " exec " << Join(args_, " "); |
Tom Cherry | 2e4c85f | 2019-07-09 13:33:36 -0700 | [diff] [blame] | 362 | for (const auto& socket : sockets_) { |
| 363 | LOG(INFO) << " socket " << socket.name; |
| 364 | } |
| 365 | for (const auto& file : files_) { |
| 366 | LOG(INFO) << " file " << file.name; |
| 367 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 368 | } |
| 369 | |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 370 | |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 371 | Result<void> Service::ExecStart() { |
Tom Cherry | 60971e6 | 2019-09-10 10:40:47 -0700 | [diff] [blame] | 372 | auto reboot_on_failure = make_scope_guard([this] { |
| 373 | if (on_failure_reboot_target_) { |
Tom Cherry | 18278d2 | 2019-11-12 16:21:20 -0800 | [diff] [blame] | 374 | trigger_shutdown(*on_failure_reboot_target_); |
Tom Cherry | 60971e6 | 2019-09-10 10:40:47 -0700 | [diff] [blame] | 375 | } |
| 376 | }); |
| 377 | |
Jiyong Park | 80aa447 | 2018-11-12 12:08:41 +0900 | [diff] [blame] | 378 | if (is_updatable() && !ServiceList::GetInstance().IsServicesUpdated()) { |
| 379 | // Don't delay the service for ExecStart() as the semantic is that |
| 380 | // the caller might depend on the side effect of the execution. |
| 381 | return Error() << "Cannot start an updatable service '" << name_ |
| 382 | << "' before configs from APEXes are all loaded"; |
| 383 | } |
| 384 | |
Tom Cherry | 3b81f2d | 2017-07-28 14:48:41 -0700 | [diff] [blame] | 385 | flags_ |= SVC_ONESHOT; |
Tom Cherry | b27004a | 2017-03-27 16:27:30 -0700 | [diff] [blame] | 386 | |
Bernie Innocenti | cecebbb | 2020-02-06 03:49:33 +0900 | [diff] [blame] | 387 | if (auto result = Start(); !result.ok()) { |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 388 | return result; |
Tom Cherry | b27004a | 2017-03-27 16:27:30 -0700 | [diff] [blame] | 389 | } |
Tom Cherry | 3b81f2d | 2017-07-28 14:48:41 -0700 | [diff] [blame] | 390 | |
| 391 | flags_ |= SVC_EXEC; |
| 392 | is_exec_service_running_ = true; |
David Anderson | d7f2bfb | 2022-04-05 06:53:32 +0000 | [diff] [blame] | 393 | exec_service_pid_ = pid_; |
David Anderson | 14f9c15 | 2022-03-15 21:55:23 -0700 | [diff] [blame] | 394 | exec_service_started_ = std::chrono::steady_clock::now(); |
Tom Cherry | 3b81f2d | 2017-07-28 14:48:41 -0700 | [diff] [blame] | 395 | |
Vic Yang | e01ca4d | 2019-05-29 15:58:32 -0700 | [diff] [blame] | 396 | LOG(INFO) << "SVC_EXEC service '" << name_ << "' pid " << pid_ << " (uid " << proc_attr_.uid |
| 397 | << " gid " << proc_attr_.gid << "+" << proc_attr_.supp_gids.size() << " context " |
Wei Wang | 2c4ee75 | 2018-06-20 14:54:52 -0700 | [diff] [blame] | 398 | << (!seclabel_.empty() ? seclabel_ : "default") << ") started; waiting..."; |
Tom Cherry | 3b81f2d | 2017-07-28 14:48:41 -0700 | [diff] [blame] | 399 | |
Tom Cherry | 60971e6 | 2019-09-10 10:40:47 -0700 | [diff] [blame] | 400 | reboot_on_failure.Disable(); |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 401 | return {}; |
Tom Cherry | b27004a | 2017-03-27 16:27:30 -0700 | [diff] [blame] | 402 | } |
| 403 | |
Bart Van Assche | ee36ba3 | 2022-01-26 20:52:52 +0000 | [diff] [blame] | 404 | static void ClosePipe(const std::array<int, 2>* pipe) { |
| 405 | for (const auto fd : *pipe) { |
| 406 | if (fd >= 0) { |
| 407 | close(fd); |
| 408 | } |
| 409 | } |
| 410 | } |
| 411 | |
Bart Van Assche | 847b80a | 2022-02-25 23:28:59 +0000 | [diff] [blame] | 412 | Result<void> Service::CheckConsole() { |
| 413 | if (!(flags_ & SVC_CONSOLE)) { |
| 414 | return {}; |
| 415 | } |
| 416 | |
| 417 | if (proc_attr_.console.empty()) { |
| 418 | proc_attr_.console = "/dev/" + GetProperty("ro.boot.console", "console"); |
| 419 | } |
| 420 | |
| 421 | // Make sure that open call succeeds to ensure a console driver is |
| 422 | // properly registered for the device node |
| 423 | int console_fd = open(proc_attr_.console.c_str(), O_RDWR | O_CLOEXEC); |
| 424 | if (console_fd < 0) { |
| 425 | flags_ |= SVC_DISABLED; |
| 426 | return ErrnoError() << "Couldn't open console '" << proc_attr_.console << "'"; |
| 427 | } |
| 428 | close(console_fd); |
| 429 | return {}; |
| 430 | } |
| 431 | |
Bart Van Assche | f2222aa | 2022-02-25 22:44:40 +0000 | [diff] [blame] | 432 | // Configures the memory cgroup properties for the service. |
| 433 | void Service::ConfigureMemcg() { |
| 434 | if (swappiness_ != -1) { |
| 435 | if (!setProcessGroupSwappiness(proc_attr_.uid, pid_, swappiness_)) { |
| 436 | PLOG(ERROR) << "setProcessGroupSwappiness failed"; |
| 437 | } |
| 438 | } |
| 439 | |
| 440 | if (soft_limit_in_bytes_ != -1) { |
| 441 | if (!setProcessGroupSoftLimit(proc_attr_.uid, pid_, soft_limit_in_bytes_)) { |
| 442 | PLOG(ERROR) << "setProcessGroupSoftLimit failed"; |
| 443 | } |
| 444 | } |
| 445 | |
| 446 | size_t computed_limit_in_bytes = limit_in_bytes_; |
| 447 | if (limit_percent_ != -1) { |
| 448 | long page_size = sysconf(_SC_PAGESIZE); |
| 449 | long num_pages = sysconf(_SC_PHYS_PAGES); |
| 450 | if (page_size > 0 && num_pages > 0) { |
| 451 | size_t max_mem = SIZE_MAX; |
| 452 | if (size_t(num_pages) < SIZE_MAX / size_t(page_size)) { |
| 453 | max_mem = size_t(num_pages) * size_t(page_size); |
| 454 | } |
| 455 | computed_limit_in_bytes = |
| 456 | std::min(computed_limit_in_bytes, max_mem / 100 * limit_percent_); |
| 457 | } |
| 458 | } |
| 459 | |
| 460 | if (!limit_property_.empty()) { |
| 461 | // This ends up overwriting computed_limit_in_bytes but only if the |
| 462 | // property is defined. |
| 463 | computed_limit_in_bytes = |
| 464 | android::base::GetUintProperty(limit_property_, computed_limit_in_bytes, SIZE_MAX); |
| 465 | } |
| 466 | |
| 467 | if (computed_limit_in_bytes != size_t(-1)) { |
| 468 | if (!setProcessGroupLimit(proc_attr_.uid, pid_, computed_limit_in_bytes)) { |
| 469 | PLOG(ERROR) << "setProcessGroupLimit failed"; |
| 470 | } |
| 471 | } |
| 472 | } |
| 473 | |
Bart Van Assche | bd73665 | 2022-02-25 22:52:52 +0000 | [diff] [blame] | 474 | // Enters namespaces, sets environment variables, writes PID files and runs the service executable. |
| 475 | void Service::RunService(const std::optional<MountNamespace>& override_mount_namespace, |
| 476 | const std::vector<Descriptor>& descriptors, |
| 477 | std::unique_ptr<std::array<int, 2>, decltype(&ClosePipe)> pipefd) { |
| 478 | if (auto result = EnterNamespaces(namespaces_, name_, override_mount_namespace); !result.ok()) { |
| 479 | LOG(FATAL) << "Service '" << name_ << "' failed to set up namespaces: " << result.error(); |
| 480 | } |
| 481 | |
| 482 | for (const auto& [key, value] : environment_vars_) { |
| 483 | setenv(key.c_str(), value.c_str(), 1); |
| 484 | } |
| 485 | |
| 486 | for (const auto& descriptor : descriptors) { |
| 487 | descriptor.Publish(); |
| 488 | } |
| 489 | |
| 490 | if (auto result = WritePidToFiles(&writepid_files_); !result.ok()) { |
| 491 | LOG(ERROR) << "failed to write pid to files: " << result.error(); |
| 492 | } |
| 493 | |
| 494 | // Wait until the cgroups have been created and until the cgroup controllers have been |
| 495 | // activated. |
Suren Baghdasaryan | 1bd1746 | 2022-03-31 21:18:20 -0700 | [diff] [blame] | 496 | char byte = 0; |
| 497 | if (read((*pipefd)[0], &byte, 1) < 0) { |
Bart Van Assche | bd73665 | 2022-02-25 22:52:52 +0000 | [diff] [blame] | 498 | PLOG(ERROR) << "failed to read from notification channel"; |
| 499 | } |
| 500 | pipefd.reset(); |
Suren Baghdasaryan | 1bd1746 | 2022-03-31 21:18:20 -0700 | [diff] [blame] | 501 | if (!byte) { |
| 502 | LOG(FATAL) << "Service '" << name_ << "' failed to start due to a fatal error"; |
| 503 | _exit(EXIT_FAILURE); |
| 504 | } |
Bart Van Assche | bd73665 | 2022-02-25 22:52:52 +0000 | [diff] [blame] | 505 | |
| 506 | if (task_profiles_.size() > 0 && !SetTaskProfiles(getpid(), task_profiles_)) { |
| 507 | LOG(ERROR) << "failed to set task profiles"; |
| 508 | } |
| 509 | |
| 510 | // As requested, set our gid, supplemental gids, uid, context, and |
| 511 | // priority. Aborts on failure. |
| 512 | SetProcessAttributesAndCaps(); |
| 513 | |
| 514 | if (!ExpandArgsAndExecv(args_, sigstop_)) { |
| 515 | PLOG(ERROR) << "cannot execv('" << args_[0] |
| 516 | << "'). See the 'Debugging init' section of init's README.md for tips"; |
| 517 | } |
| 518 | } |
| 519 | |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 520 | Result<void> Service::Start() { |
Tom Cherry | 60971e6 | 2019-09-10 10:40:47 -0700 | [diff] [blame] | 521 | auto reboot_on_failure = make_scope_guard([this] { |
| 522 | if (on_failure_reboot_target_) { |
Tom Cherry | 18278d2 | 2019-11-12 16:21:20 -0800 | [diff] [blame] | 523 | trigger_shutdown(*on_failure_reboot_target_); |
Tom Cherry | 60971e6 | 2019-09-10 10:40:47 -0700 | [diff] [blame] | 524 | } |
| 525 | }); |
| 526 | |
Jiyong Park | 80aa447 | 2018-11-12 12:08:41 +0900 | [diff] [blame] | 527 | if (is_updatable() && !ServiceList::GetInstance().IsServicesUpdated()) { |
| 528 | ServiceList::GetInstance().DelayService(*this); |
| 529 | return Error() << "Cannot start an updatable service '" << name_ |
| 530 | << "' before configs from APEXes are all loaded. " |
| 531 | << "Queued for execution."; |
| 532 | } |
| 533 | |
Tao Wu | 990d43c | 2017-10-26 10:43:10 -0700 | [diff] [blame] | 534 | bool disabled = (flags_ & (SVC_DISABLED | SVC_RESET)); |
David Anderson | 0e5ad5a | 2021-07-21 21:53:28 -0700 | [diff] [blame] | 535 | ResetFlagsForStart(); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 536 | |
| 537 | // Running processes require no additional work --- if they're in the |
| 538 | // process of exiting, we've ensured that they will immediately restart |
Tao Wu | 990d43c | 2017-10-26 10:43:10 -0700 | [diff] [blame] | 539 | // on exit, unless they are ONESHOT. For ONESHOT service, if it's in |
| 540 | // stopping status, we just set SVC_RESTART flag so it will get restarted |
| 541 | // in Reap(). |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 542 | if (flags_ & SVC_RUNNING) { |
Tao Wu | 990d43c | 2017-10-26 10:43:10 -0700 | [diff] [blame] | 543 | if ((flags_ & SVC_ONESHOT) && disabled) { |
| 544 | flags_ |= SVC_RESTART; |
| 545 | } |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 546 | // It is not an error to try to start a service that is already running. |
Tom Cherry | 60971e6 | 2019-09-10 10:40:47 -0700 | [diff] [blame] | 547 | reboot_on_failure.Disable(); |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 548 | return {}; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 549 | } |
| 550 | |
Bart Van Assche | ee36ba3 | 2022-01-26 20:52:52 +0000 | [diff] [blame] | 551 | std::unique_ptr<std::array<int, 2>, decltype(&ClosePipe)> pipefd(new std::array<int, 2>{-1, -1}, |
| 552 | ClosePipe); |
| 553 | if (pipe(pipefd->data()) < 0) { |
| 554 | return ErrnoError() << "pipe()"; |
| 555 | } |
| 556 | |
Bart Van Assche | 847b80a | 2022-02-25 23:28:59 +0000 | [diff] [blame] | 557 | if (Result<void> result = CheckConsole(); !result.ok()) { |
| 558 | return result; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 559 | } |
| 560 | |
| 561 | struct stat sb; |
| 562 | if (stat(args_[0].c_str(), &sb) == -1) { |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 563 | flags_ |= SVC_DISABLED; |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 564 | return ErrnoError() << "Cannot find '" << args_[0] << "'"; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 565 | } |
| 566 | |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 567 | std::string scon; |
| 568 | if (!seclabel_.empty()) { |
| 569 | scon = seclabel_; |
| 570 | } else { |
Tom Cherry | aead51b | 2018-04-20 16:18:12 -0700 | [diff] [blame] | 571 | auto result = ComputeContextFromExecutable(args_[0]); |
Bernie Innocenti | cecebbb | 2020-02-06 03:49:33 +0900 | [diff] [blame] | 572 | if (!result.ok()) { |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 573 | return result.error(); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 574 | } |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 575 | scon = *result; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 576 | } |
| 577 | |
Jooyung Han | e5232a7 | 2021-04-20 22:39:53 +0900 | [diff] [blame] | 578 | // APEXd is always started in the "current" namespace because it is the process to set up |
| 579 | // the current namespace. |
| 580 | const bool is_apexd = args_[0] == "/system/bin/apexd"; |
| 581 | |
| 582 | if (!IsDefaultMountNamespaceReady() && !is_apexd) { |
Kiyoung Kim | 0cbee0d | 2021-03-02 16:45:27 +0900 | [diff] [blame] | 583 | // If this service is started before APEXes and corresponding linker configuration |
| 584 | // get available, mark it as pre-apexd one. Note that this marking is |
Martin Stjernholm | cacf043 | 2019-08-21 18:34:31 +0100 | [diff] [blame] | 585 | // permanent. So for example, if the service is re-launched (e.g., due |
| 586 | // to crash), it is still recognized as pre-apexd... for consistency. |
Kiyoung Kim | 0cbee0d | 2021-03-02 16:45:27 +0900 | [diff] [blame] | 587 | use_bootstrap_ns_ = true; |
Jiyong Park | 6866041 | 2019-01-16 23:00:59 +0900 | [diff] [blame] | 588 | } |
| 589 | |
Jooyung Han | 4f23d5a | 2020-06-09 13:44:17 +0900 | [diff] [blame] | 590 | // For pre-apexd services, override mount namespace as "bootstrap" one before starting. |
| 591 | // Note: "ueventd" is supposed to be run in "default" mount namespace even if it's pre-apexd |
| 592 | // to support loading firmwares from APEXes. |
| 593 | std::optional<MountNamespace> override_mount_namespace; |
| 594 | if (name_ == "ueventd") { |
| 595 | override_mount_namespace = NS_DEFAULT; |
Kiyoung Kim | 0cbee0d | 2021-03-02 16:45:27 +0900 | [diff] [blame] | 596 | } else if (use_bootstrap_ns_) { |
Jooyung Han | 4f23d5a | 2020-06-09 13:44:17 +0900 | [diff] [blame] | 597 | override_mount_namespace = NS_BOOTSTRAP; |
| 598 | } |
| 599 | |
Martijn Coenen | 70788f9 | 2019-04-23 16:26:01 +0200 | [diff] [blame] | 600 | post_data_ = ServiceList::GetInstance().IsPostData(); |
| 601 | |
Wei Wang | a285dac | 2016-10-04 14:05:39 -0700 | [diff] [blame] | 602 | LOG(INFO) << "starting service '" << name_ << "'..."; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 603 | |
Tom Cherry | 5241d10 | 2019-09-10 14:20:35 -0700 | [diff] [blame] | 604 | std::vector<Descriptor> descriptors; |
| 605 | for (const auto& socket : sockets_) { |
Bernie Innocenti | cecebbb | 2020-02-06 03:49:33 +0900 | [diff] [blame] | 606 | if (auto result = socket.Create(scon); result.ok()) { |
Tom Cherry | 5241d10 | 2019-09-10 14:20:35 -0700 | [diff] [blame] | 607 | descriptors.emplace_back(std::move(*result)); |
| 608 | } else { |
| 609 | LOG(INFO) << "Could not create socket '" << socket.name << "': " << result.error(); |
| 610 | } |
| 611 | } |
| 612 | |
| 613 | for (const auto& file : files_) { |
Bernie Innocenti | cecebbb | 2020-02-06 03:49:33 +0900 | [diff] [blame] | 614 | if (auto result = file.Create(); result.ok()) { |
Tom Cherry | 5241d10 | 2019-09-10 14:20:35 -0700 | [diff] [blame] | 615 | descriptors.emplace_back(std::move(*result)); |
| 616 | } else { |
| 617 | LOG(INFO) << "Could not open file '" << file.name << "': " << result.error(); |
| 618 | } |
| 619 | } |
| 620 | |
Jorge Lucangeli Obes | 1b3fa3d | 2016-04-21 15:35:09 -0700 | [diff] [blame] | 621 | pid_t pid = -1; |
Vic Yang | e01ca4d | 2019-05-29 15:58:32 -0700 | [diff] [blame] | 622 | if (namespaces_.flags) { |
| 623 | pid = clone(nullptr, nullptr, namespaces_.flags | SIGCHLD, nullptr); |
Jorge Lucangeli Obes | 1b3fa3d | 2016-04-21 15:35:09 -0700 | [diff] [blame] | 624 | } else { |
| 625 | pid = fork(); |
| 626 | } |
| 627 | |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 628 | if (pid == 0) { |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 629 | umask(077); |
Bart Van Assche | bd73665 | 2022-02-25 22:52:52 +0000 | [diff] [blame] | 630 | RunService(override_mount_namespace, descriptors, std::move(pipefd)); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 631 | _exit(127); |
| 632 | } |
| 633 | |
| 634 | if (pid < 0) { |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 635 | pid_ = 0; |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 636 | return ErrnoError() << "Failed to fork"; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 637 | } |
| 638 | |
Suren Baghdasaryan | c29c2ba | 2019-10-22 17:18:42 -0700 | [diff] [blame] | 639 | if (oom_score_adjust_ != DEFAULT_OOM_SCORE_ADJUST) { |
Tom Cherry | 1c3a53f | 2017-06-22 16:50:31 -0700 | [diff] [blame] | 640 | std::string oom_str = std::to_string(oom_score_adjust_); |
Marco Nelissen | 310f670 | 2016-07-22 12:07:06 -0700 | [diff] [blame] | 641 | std::string oom_file = StringPrintf("/proc/%d/oom_score_adj", pid); |
| 642 | if (!WriteStringToFile(oom_str, oom_file)) { |
Elliott Hughes | 076305e | 2019-03-08 12:34:53 -0800 | [diff] [blame] | 643 | PLOG(ERROR) << "couldn't write oom_score_adj"; |
Marco Nelissen | 310f670 | 2016-07-22 12:07:06 -0700 | [diff] [blame] | 644 | } |
| 645 | } |
| 646 | |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 647 | time_started_ = boot_clock::now(); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 648 | pid_ = pid; |
| 649 | flags_ |= SVC_RUNNING; |
Tom Cherry | 5938379 | 2017-07-26 16:09:09 -0700 | [diff] [blame] | 650 | start_order_ = next_start_order_++; |
Tom Cherry | 33838b1 | 2017-05-04 11:32:36 -0700 | [diff] [blame] | 651 | process_cgroup_empty_ = false; |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 652 | |
Peter Collingbourne | d7157c2 | 2018-10-30 15:49:33 -0700 | [diff] [blame] | 653 | bool use_memcg = swappiness_ != -1 || soft_limit_in_bytes_ != -1 || limit_in_bytes_ != -1 || |
| 654 | limit_percent_ != -1 || !limit_property_.empty(); |
Vic Yang | e01ca4d | 2019-05-29 15:58:32 -0700 | [diff] [blame] | 655 | errno = -createProcessGroup(proc_attr_.uid, pid_, use_memcg); |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 656 | if (errno != 0) { |
Suren Baghdasaryan | 1bd1746 | 2022-03-31 21:18:20 -0700 | [diff] [blame] | 657 | if (char byte = 0; write((*pipefd)[1], &byte, 1) < 0) { |
| 658 | return ErrnoError() << "sending notification failed"; |
| 659 | } |
| 660 | return Error() << "createProcessGroup(" << proc_attr_.uid << ", " << pid_ |
| 661 | << ") failed for service '" << name_ << "'"; |
| 662 | } |
| 663 | |
| 664 | if (use_memcg) { |
Bart Van Assche | f2222aa | 2022-02-25 22:44:40 +0000 | [diff] [blame] | 665 | ConfigureMemcg(); |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 666 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 667 | |
Suren Baghdasaryan | c29c2ba | 2019-10-22 17:18:42 -0700 | [diff] [blame] | 668 | if (oom_score_adjust_ != DEFAULT_OOM_SCORE_ADJUST) { |
| 669 | LmkdRegister(name_, proc_attr_.uid, pid_, oom_score_adjust_); |
| 670 | } |
| 671 | |
Suren Baghdasaryan | 1bd1746 | 2022-03-31 21:18:20 -0700 | [diff] [blame] | 672 | if (char byte = 1; write((*pipefd)[1], &byte, 1) < 0) { |
Bart Van Assche | ee36ba3 | 2022-01-26 20:52:52 +0000 | [diff] [blame] | 673 | return ErrnoError() << "sending notification failed"; |
| 674 | } |
| 675 | |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 676 | NotifyStateChange("running"); |
Tom Cherry | 60971e6 | 2019-09-10 10:40:47 -0700 | [diff] [blame] | 677 | reboot_on_failure.Disable(); |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 678 | return {}; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 679 | } |
| 680 | |
David Anderson | 0e5ad5a | 2021-07-21 21:53:28 -0700 | [diff] [blame] | 681 | void Service::SetStartedInFirstStage(pid_t pid) { |
| 682 | LOG(INFO) << "adding first-stage service '" << name_ << "'..."; |
| 683 | |
| 684 | time_started_ = boot_clock::now(); // not accurate, but doesn't matter here |
| 685 | pid_ = pid; |
| 686 | flags_ |= SVC_RUNNING; |
| 687 | start_order_ = next_start_order_++; |
| 688 | |
| 689 | NotifyStateChange("running"); |
| 690 | } |
| 691 | |
| 692 | void Service::ResetFlagsForStart() { |
| 693 | // Starting a service removes it from the disabled or reset state and |
| 694 | // immediately takes it out of the restarting state if it was in there. |
| 695 | flags_ &= ~(SVC_DISABLED | SVC_RESTARTING | SVC_RESET | SVC_RESTART | SVC_DISABLED_START); |
| 696 | } |
| 697 | |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 698 | Result<void> Service::StartIfNotDisabled() { |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 699 | if (!(flags_ & SVC_DISABLED)) { |
| 700 | return Start(); |
| 701 | } else { |
| 702 | flags_ |= SVC_DISABLED_START; |
| 703 | } |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 704 | return {}; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 705 | } |
| 706 | |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 707 | Result<void> Service::Enable() { |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 708 | flags_ &= ~(SVC_DISABLED | SVC_RC_DISABLED); |
| 709 | if (flags_ & SVC_DISABLED_START) { |
| 710 | return Start(); |
| 711 | } |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 712 | return {}; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 713 | } |
| 714 | |
| 715 | void Service::Reset() { |
| 716 | StopOrReset(SVC_RESET); |
| 717 | } |
| 718 | |
| 719 | void Service::Stop() { |
| 720 | StopOrReset(SVC_DISABLED); |
| 721 | } |
| 722 | |
Bertrand SIMONNET | b7e03e8 | 2015-12-18 11:39:59 -0800 | [diff] [blame] | 723 | void Service::Terminate() { |
| 724 | flags_ &= ~(SVC_RESTARTING | SVC_DISABLED_START); |
| 725 | flags_ |= SVC_DISABLED; |
| 726 | if (pid_) { |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 727 | KillProcessGroup(SIGTERM); |
Bertrand SIMONNET | b7e03e8 | 2015-12-18 11:39:59 -0800 | [diff] [blame] | 728 | NotifyStateChange("stopping"); |
| 729 | } |
| 730 | } |
| 731 | |
Tom Cherry | 73f535e | 2018-09-27 16:10:46 -0700 | [diff] [blame] | 732 | void Service::Timeout() { |
| 733 | // All process state flags will be taken care of in Reap(), we really just want to kill the |
| 734 | // process here when it times out. Oneshot processes will transition to be disabled, and |
| 735 | // all other processes will transition to be restarting. |
| 736 | LOG(INFO) << "Service '" << name_ << "' expired its timeout of " << timeout_period_->count() |
| 737 | << " seconds and will now be killed"; |
| 738 | if (pid_) { |
| 739 | KillProcessGroup(SIGKILL); |
| 740 | NotifyStateChange("stopping"); |
| 741 | } |
| 742 | } |
| 743 | |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 744 | void Service::Restart() { |
| 745 | if (flags_ & SVC_RUNNING) { |
| 746 | /* Stop, wait, then start the service. */ |
| 747 | StopOrReset(SVC_RESTART); |
| 748 | } else if (!(flags_ & SVC_RESTARTING)) { |
| 749 | /* Just start the service since it's not running. */ |
Bernie Innocenti | cecebbb | 2020-02-06 03:49:33 +0900 | [diff] [blame] | 750 | if (auto result = Start(); !result.ok()) { |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 751 | LOG(ERROR) << "Could not restart '" << name_ << "': " << result.error(); |
| 752 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 753 | } /* else: Service is restarting anyways. */ |
| 754 | } |
| 755 | |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 756 | // The how field should be either SVC_DISABLED, SVC_RESET, or SVC_RESTART. |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 757 | void Service::StopOrReset(int how) { |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 758 | // The service is still SVC_RUNNING until its process exits, but if it has |
| 759 | // already exited it shoudn't attempt a restart yet. |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 760 | flags_ &= ~(SVC_RESTARTING | SVC_DISABLED_START); |
| 761 | |
| 762 | if ((how != SVC_DISABLED) && (how != SVC_RESET) && (how != SVC_RESTART)) { |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 763 | // An illegal flag: default to SVC_DISABLED. |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 764 | how = SVC_DISABLED; |
| 765 | } |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 766 | |
| 767 | // If the service has not yet started, prevent it from auto-starting with its class. |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 768 | if (how == SVC_RESET) { |
| 769 | flags_ |= (flags_ & SVC_RC_DISABLED) ? SVC_DISABLED : SVC_RESET; |
| 770 | } else { |
| 771 | flags_ |= how; |
| 772 | } |
Tao Wu | 84b856d | 2017-10-27 11:29:13 -0700 | [diff] [blame] | 773 | // Make sure it's in right status when a restart immediately follow a |
| 774 | // stop/reset or vice versa. |
| 775 | if (how == SVC_RESTART) { |
| 776 | flags_ &= (~(SVC_DISABLED | SVC_RESET)); |
| 777 | } else { |
| 778 | flags_ &= (~SVC_RESTART); |
| 779 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 780 | |
| 781 | if (pid_) { |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 782 | KillProcessGroup(SIGKILL); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 783 | NotifyStateChange("stopping"); |
| 784 | } else { |
| 785 | NotifyStateChange("stopped"); |
| 786 | } |
| 787 | } |
| 788 | |
Tom Cherry | 4772f1d | 2019-07-30 09:34:41 -0700 | [diff] [blame] | 789 | Result<std::unique_ptr<Service>> Service::MakeTemporaryOneshotService( |
| 790 | const std::vector<std::string>& args) { |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 791 | // Parse the arguments: exec [SECLABEL [UID [GID]*] --] COMMAND ARGS... |
| 792 | // SECLABEL can be a - to denote default |
| 793 | std::size_t command_arg = 1; |
| 794 | for (std::size_t i = 1; i < args.size(); ++i) { |
| 795 | if (args[i] == "--") { |
| 796 | command_arg = i + 1; |
| 797 | break; |
| 798 | } |
| 799 | } |
| 800 | if (command_arg > 4 + NR_SVC_SUPP_GIDS) { |
Tom Cherry | 4772f1d | 2019-07-30 09:34:41 -0700 | [diff] [blame] | 801 | return Error() << "exec called with too many supplementary group ids"; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 802 | } |
| 803 | |
| 804 | if (command_arg >= args.size()) { |
Tom Cherry | 4772f1d | 2019-07-30 09:34:41 -0700 | [diff] [blame] | 805 | return Error() << "exec called without command"; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 806 | } |
| 807 | std::vector<std::string> str_args(args.begin() + command_arg, args.end()); |
| 808 | |
Tom Cherry | 3b81f2d | 2017-07-28 14:48:41 -0700 | [diff] [blame] | 809 | static size_t exec_count = 0; |
| 810 | exec_count++; |
| 811 | std::string name = "exec " + std::to_string(exec_count) + " (" + Join(str_args, " ") + ")"; |
Tom Cherry | 86e31a8 | 2017-04-25 17:31:06 -0700 | [diff] [blame] | 812 | |
Tom Cherry | 3b81f2d | 2017-07-28 14:48:41 -0700 | [diff] [blame] | 813 | unsigned flags = SVC_ONESHOT | SVC_TEMPORARY; |
Jorge Lucangeli Obes | 1b3fa3d | 2016-04-21 15:35:09 -0700 | [diff] [blame] | 814 | unsigned namespace_flags = 0; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 815 | |
| 816 | std::string seclabel = ""; |
| 817 | if (command_arg > 2 && args[1] != "-") { |
| 818 | seclabel = args[1]; |
| 819 | } |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 820 | Result<uid_t> uid = 0; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 821 | if (command_arg > 3) { |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 822 | uid = DecodeUid(args[2]); |
Bernie Innocenti | cecebbb | 2020-02-06 03:49:33 +0900 | [diff] [blame] | 823 | if (!uid.ok()) { |
Tom Cherry | 4772f1d | 2019-07-30 09:34:41 -0700 | [diff] [blame] | 824 | return Error() << "Unable to decode UID for '" << args[2] << "': " << uid.error(); |
Tom Cherry | 517e1f1 | 2017-05-04 17:40:33 -0700 | [diff] [blame] | 825 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 826 | } |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 827 | Result<gid_t> gid = 0; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 828 | std::vector<gid_t> supp_gids; |
| 829 | if (command_arg > 4) { |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 830 | gid = DecodeUid(args[3]); |
Bernie Innocenti | cecebbb | 2020-02-06 03:49:33 +0900 | [diff] [blame] | 831 | if (!gid.ok()) { |
Tom Cherry | 4772f1d | 2019-07-30 09:34:41 -0700 | [diff] [blame] | 832 | return Error() << "Unable to decode GID for '" << args[3] << "': " << gid.error(); |
Tom Cherry | 517e1f1 | 2017-05-04 17:40:33 -0700 | [diff] [blame] | 833 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 834 | std::size_t nr_supp_gids = command_arg - 1 /* -- */ - 4 /* exec SECLABEL UID GID */; |
| 835 | for (size_t i = 0; i < nr_supp_gids; ++i) { |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 836 | auto supp_gid = DecodeUid(args[4 + i]); |
Bernie Innocenti | cecebbb | 2020-02-06 03:49:33 +0900 | [diff] [blame] | 837 | if (!supp_gid.ok()) { |
Tom Cherry | 4772f1d | 2019-07-30 09:34:41 -0700 | [diff] [blame] | 838 | return Error() << "Unable to decode GID for '" << args[4 + i] |
| 839 | << "': " << supp_gid.error(); |
Tom Cherry | 517e1f1 | 2017-05-04 17:40:33 -0700 | [diff] [blame] | 840 | } |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 841 | supp_gids.push_back(*supp_gid); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 842 | } |
| 843 | } |
| 844 | |
Tom Cherry | 1cd082d | 2019-02-06 10:45:56 -0800 | [diff] [blame] | 845 | return std::make_unique<Service>(name, flags, *uid, *gid, supp_gids, namespace_flags, seclabel, |
Nikita Ioffe | 091c4d1 | 2019-12-05 12:35:19 +0000 | [diff] [blame] | 846 | nullptr, str_args, false); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 847 | } |
| 848 | |
David Anderson | 0e5ad5a | 2021-07-21 21:53:28 -0700 | [diff] [blame] | 849 | // This is used for snapuserd_proxy, which hands off a socket to snapuserd. It's |
| 850 | // a special case to support the daemon launched in first-stage init. The persist |
| 851 | // feature is not part of the init language and is only used here. |
| 852 | bool Service::MarkSocketPersistent(const std::string& socket_name) { |
| 853 | for (auto& socket : sockets_) { |
| 854 | if (socket.name == socket_name) { |
| 855 | socket.persist = true; |
| 856 | return true; |
| 857 | } |
| 858 | } |
| 859 | return false; |
| 860 | } |
| 861 | |
Tom Cherry | 81f5d3e | 2017-06-22 12:53:17 -0700 | [diff] [blame] | 862 | } // namespace init |
| 863 | } // namespace android |