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> |
| 23 | #include <sys/mount.h> |
| 24 | #include <sys/prctl.h> |
Vitalii Tomkiv | 081705c | 2016-05-18 17:36:30 -0700 | [diff] [blame] | 25 | #include <sys/resource.h> |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 26 | #include <sys/stat.h> |
Tom Cherry | f57c0bf | 2017-04-07 13:46:21 -0700 | [diff] [blame] | 27 | #include <sys/system_properties.h> |
Vitalii Tomkiv | 081705c | 2016-05-18 17:36:30 -0700 | [diff] [blame] | 28 | #include <sys/time.h> |
Bertrand SIMONNET | b7e03e8 | 2015-12-18 11:39:59 -0800 | [diff] [blame] | 29 | #include <sys/wait.h> |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 30 | #include <termios.h> |
Dan Albert | af9ba4d | 2015-08-11 16:37:04 -0700 | [diff] [blame] | 31 | #include <unistd.h> |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 32 | |
Elliott Hughes | 4f71319 | 2015-12-04 22:00:26 -0800 | [diff] [blame] | 33 | #include <android-base/file.h> |
Tom Cherry | 3f5eaae5 | 2017-04-06 16:30:22 -0700 | [diff] [blame] | 34 | #include <android-base/logging.h> |
Elliott Hughes | da46b39 | 2016-10-11 17:09:00 -0700 | [diff] [blame] | 35 | #include <android-base/parseint.h> |
Tom Cherry | ccf2353 | 2017-03-28 16:40:41 -0700 | [diff] [blame] | 36 | #include <android-base/properties.h> |
Tom Cherry | 8d13d80 | 2017-06-29 16:18:08 -0700 | [diff] [blame] | 37 | #include <android-base/scopeguard.h> |
Elliott Hughes | 4f71319 | 2015-12-04 22:00:26 -0800 | [diff] [blame] | 38 | #include <android-base/stringprintf.h> |
Elliott Hughes | f86b5a6 | 2016-06-24 15:12:21 -0700 | [diff] [blame] | 39 | #include <android-base/strings.h> |
Steven Moreland | e055d73 | 2017-10-05 18:50:22 -0700 | [diff] [blame] | 40 | #include <hidl-util/FQName.h> |
Tom Cherry | 3f5eaae5 | 2017-04-06 16:30:22 -0700 | [diff] [blame] | 41 | #include <processgroup/processgroup.h> |
| 42 | #include <selinux/selinux.h> |
Vitalii Tomkiv | 081705c | 2016-05-18 17:36:30 -0700 | [diff] [blame] | 43 | #include <system/thread_defs.h> |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 44 | |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 45 | #include "init.h" |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 46 | #include "property_service.h" |
Tom Cherry | 7ac013d | 2017-08-25 10:39:25 -0700 | [diff] [blame] | 47 | #include "rlimit_parser.h" |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 48 | #include "util.h" |
| 49 | |
James Hawkins | e78ea77 | 2017-03-24 11:43:02 -0700 | [diff] [blame] | 50 | using android::base::boot_clock; |
Tom Cherry | 81f5d3e | 2017-06-22 12:53:17 -0700 | [diff] [blame] | 51 | using android::base::GetProperty; |
| 52 | using android::base::Join; |
Tom Cherry | 8d13d80 | 2017-06-29 16:18:08 -0700 | [diff] [blame] | 53 | using android::base::make_scope_guard; |
Elliott Hughes | da46b39 | 2016-10-11 17:09:00 -0700 | [diff] [blame] | 54 | using android::base::ParseInt; |
Tom Cherry | 81f5d3e | 2017-06-22 12:53:17 -0700 | [diff] [blame] | 55 | using android::base::StartsWith; |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 56 | using android::base::StringPrintf; |
| 57 | using android::base::WriteStringToFile; |
| 58 | |
Tom Cherry | 81f5d3e | 2017-06-22 12:53:17 -0700 | [diff] [blame] | 59 | namespace android { |
| 60 | namespace init { |
| 61 | |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 62 | static Result<std::string> ComputeContextFromExecutable(std::string& service_name, |
| 63 | const std::string& service_path) { |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 64 | std::string computed_context; |
| 65 | |
| 66 | char* raw_con = nullptr; |
| 67 | char* raw_filecon = nullptr; |
| 68 | |
| 69 | if (getcon(&raw_con) == -1) { |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 70 | return Error() << "Could not get security context"; |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 71 | } |
| 72 | std::unique_ptr<char> mycon(raw_con); |
| 73 | |
| 74 | if (getfilecon(service_path.c_str(), &raw_filecon) == -1) { |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 75 | return Error() << "Could not get file context"; |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 76 | } |
| 77 | std::unique_ptr<char> filecon(raw_filecon); |
| 78 | |
| 79 | char* new_con = nullptr; |
| 80 | int rc = security_compute_create(mycon.get(), filecon.get(), |
| 81 | string_to_security_class("process"), &new_con); |
| 82 | if (rc == 0) { |
| 83 | computed_context = new_con; |
| 84 | free(new_con); |
| 85 | } |
| 86 | if (rc == 0 && computed_context == mycon.get()) { |
Nick Kralevich | 1ea19eb | 2017-08-25 12:08:57 -0700 | [diff] [blame] | 87 | return Error() << "File " << service_path << "(labeled \"" << filecon.get() |
| 88 | << "\") has incorrect label or no domain transition from " << mycon.get() |
| 89 | << " to another SELinux domain defined. Have you configured your " |
| 90 | "service correctly? https://source.android.com/security/selinux/" |
| 91 | "device-policy#label_new_services_and_address_denials"; |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 92 | } |
| 93 | if (rc < 0) { |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 94 | return Error() << "Could not get process context"; |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 95 | } |
| 96 | return computed_context; |
| 97 | } |
| 98 | |
Jorge Lucangeli Obes | 1b3fa3d | 2016-04-21 15:35:09 -0700 | [diff] [blame] | 99 | static void SetUpPidNamespace(const std::string& service_name) { |
| 100 | constexpr unsigned int kSafeFlags = MS_NODEV | MS_NOEXEC | MS_NOSUID; |
| 101 | |
| 102 | // It's OK to LOG(FATAL) in this function since it's running in the first |
| 103 | // child process. |
Joe Tanen | 4bfdcb3 | 2017-10-25 08:07:26 -0400 | [diff] [blame] | 104 | |
| 105 | // Recursively remount / as slave like zygote does so unmounting and mounting /proc |
| 106 | // doesn't interfere with the parent namespace's /proc mount. This will also |
| 107 | // prevent any other mounts/unmounts initiated by the service from interfering |
| 108 | // with the parent namespace but will still allow mount events from the parent |
| 109 | // namespace to propagate to the child. |
| 110 | if (mount("rootfs", "/", nullptr, (MS_SLAVE | MS_REC), nullptr) == -1) { |
| 111 | PLOG(FATAL) << "couldn't remount(/) recursively as slave for " << service_name; |
| 112 | } |
| 113 | // umount() then mount() /proc. |
| 114 | // Note that it is not sufficient to mount with MS_REMOUNT. |
| 115 | if (umount("/proc") == -1) { |
| 116 | PLOG(FATAL) << "couldn't umount(/proc) for " << service_name; |
| 117 | } |
| 118 | if (mount("", "/proc", "proc", kSafeFlags, "") == -1) { |
| 119 | PLOG(FATAL) << "couldn't mount(/proc) for " << service_name; |
Jorge Lucangeli Obes | 1b3fa3d | 2016-04-21 15:35:09 -0700 | [diff] [blame] | 120 | } |
| 121 | |
| 122 | if (prctl(PR_SET_NAME, service_name.c_str()) == -1) { |
Elliott Hughes | e18e7e5 | 2016-07-25 18:18:16 -0700 | [diff] [blame] | 123 | PLOG(FATAL) << "couldn't set name for " << service_name; |
Jorge Lucangeli Obes | 1b3fa3d | 2016-04-21 15:35:09 -0700 | [diff] [blame] | 124 | } |
| 125 | |
| 126 | pid_t child_pid = fork(); |
| 127 | if (child_pid == -1) { |
Elliott Hughes | e18e7e5 | 2016-07-25 18:18:16 -0700 | [diff] [blame] | 128 | PLOG(FATAL) << "couldn't fork init inside the PID namespace for " << service_name; |
Jorge Lucangeli Obes | 1b3fa3d | 2016-04-21 15:35:09 -0700 | [diff] [blame] | 129 | } |
| 130 | |
| 131 | if (child_pid > 0) { |
| 132 | // So that we exit with the right status. |
| 133 | static int init_exitstatus = 0; |
| 134 | signal(SIGTERM, [](int) { _exit(init_exitstatus); }); |
| 135 | |
| 136 | pid_t waited_pid; |
| 137 | int status; |
| 138 | while ((waited_pid = wait(&status)) > 0) { |
| 139 | // This loop will end when there are no processes left inside the |
| 140 | // PID namespace or when the init process inside the PID namespace |
| 141 | // gets a signal. |
| 142 | if (waited_pid == child_pid) { |
| 143 | init_exitstatus = status; |
| 144 | } |
| 145 | } |
| 146 | if (!WIFEXITED(init_exitstatus)) { |
| 147 | _exit(EXIT_FAILURE); |
| 148 | } |
| 149 | _exit(WEXITSTATUS(init_exitstatus)); |
| 150 | } |
| 151 | } |
| 152 | |
Tom Cherry | 5e405ca | 2017-09-11 16:08:54 -0700 | [diff] [blame] | 153 | static bool ExpandArgsAndExecv(const std::vector<std::string>& args) { |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 154 | std::vector<std::string> expanded_args; |
Tom Cherry | 5e405ca | 2017-09-11 16:08:54 -0700 | [diff] [blame] | 155 | std::vector<char*> c_strings; |
| 156 | |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 157 | expanded_args.resize(args.size()); |
Tom Cherry | 5e405ca | 2017-09-11 16:08:54 -0700 | [diff] [blame] | 158 | c_strings.push_back(const_cast<char*>(args[0].data())); |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 159 | for (std::size_t i = 1; i < args.size(); ++i) { |
| 160 | if (!expand_props(args[i], &expanded_args[i])) { |
| 161 | LOG(FATAL) << args[0] << ": cannot expand '" << args[i] << "'"; |
| 162 | } |
Tom Cherry | 5e405ca | 2017-09-11 16:08:54 -0700 | [diff] [blame] | 163 | c_strings.push_back(expanded_args[i].data()); |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 164 | } |
Tom Cherry | 5e405ca | 2017-09-11 16:08:54 -0700 | [diff] [blame] | 165 | c_strings.push_back(nullptr); |
| 166 | |
| 167 | return execv(c_strings[0], c_strings.data()) == 0; |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 168 | } |
| 169 | |
Tom Cherry | 5938379 | 2017-07-26 16:09:09 -0700 | [diff] [blame] | 170 | unsigned long Service::next_start_order_ = 1; |
Tom Cherry | 3b81f2d | 2017-07-28 14:48:41 -0700 | [diff] [blame] | 171 | bool Service::is_exec_service_running_ = false; |
Tom Cherry | 5938379 | 2017-07-26 16:09:09 -0700 | [diff] [blame] | 172 | |
Tom Cherry | cb0f9bb | 2017-09-12 15:58:47 -0700 | [diff] [blame] | 173 | Service::Service(const std::string& name, Subcontext* subcontext_for_restart_commands, |
| 174 | const std::vector<std::string>& args) |
| 175 | : Service(name, 0, 0, 0, {}, 0, 0, "", subcontext_for_restart_commands, args) {} |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 176 | |
Wei Wang | 641ff0a | 2017-03-27 10:59:11 -0700 | [diff] [blame] | 177 | Service::Service(const std::string& name, unsigned flags, uid_t uid, gid_t gid, |
| 178 | const std::vector<gid_t>& supp_gids, const CapSet& capabilities, |
| 179 | unsigned namespace_flags, const std::string& seclabel, |
Tom Cherry | cb0f9bb | 2017-09-12 15:58:47 -0700 | [diff] [blame] | 180 | Subcontext* subcontext_for_restart_commands, const std::vector<std::string>& args) |
Wei Wang | 641ff0a | 2017-03-27 10:59:11 -0700 | [diff] [blame] | 181 | : name_(name), |
| 182 | classnames_({"default"}), |
| 183 | flags_(flags), |
| 184 | pid_(0), |
| 185 | crash_count_(0), |
| 186 | uid_(uid), |
| 187 | gid_(gid), |
| 188 | supp_gids_(supp_gids), |
| 189 | capabilities_(capabilities), |
| 190 | namespace_flags_(namespace_flags), |
| 191 | seclabel_(seclabel), |
Tom Cherry | 9cbf570 | 2018-02-13 16:24:51 -0800 | [diff] [blame] | 192 | onrestart_(false, subcontext_for_restart_commands, "<Service '" + name + "' onrestart>", 0, |
| 193 | "onrestart", {}), |
Tom Cherry | 7da5485 | 2017-05-01 14:16:41 -0700 | [diff] [blame] | 194 | keychord_id_(0), |
Wei Wang | 641ff0a | 2017-03-27 10:59:11 -0700 | [diff] [blame] | 195 | ioprio_class_(IoSchedClass_NONE), |
| 196 | ioprio_pri_(0), |
| 197 | priority_(0), |
| 198 | oom_score_adjust_(-1000), |
Robert Benea | d485226 | 2017-07-16 19:38:11 -0700 | [diff] [blame] | 199 | swappiness_(-1), |
| 200 | soft_limit_in_bytes_(-1), |
| 201 | limit_in_bytes_(-1), |
Tom Cherry | 5938379 | 2017-07-26 16:09:09 -0700 | [diff] [blame] | 202 | start_order_(0), |
Tom Cherry | 9cbf570 | 2018-02-13 16:24:51 -0800 | [diff] [blame] | 203 | args_(args) {} |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 204 | |
| 205 | void Service::NotifyStateChange(const std::string& new_state) const { |
Tom Cherry | b27004a | 2017-03-27 16:27:30 -0700 | [diff] [blame] | 206 | if ((flags_ & SVC_TEMPORARY) != 0) { |
| 207 | // 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] | 208 | return; |
| 209 | } |
| 210 | |
Tom Cherry | 1c3a53f | 2017-06-22 16:50:31 -0700 | [diff] [blame] | 211 | std::string prop_name = "init.svc." + name_; |
| 212 | property_set(prop_name, new_state); |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 213 | |
| 214 | if (new_state == "running") { |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 215 | uint64_t start_ns = time_started_.time_since_epoch().count(); |
Tom Cherry | fed3373 | 2017-08-18 10:47:46 -0700 | [diff] [blame] | 216 | std::string boottime_property = "ro.boottime." + name_; |
| 217 | if (GetProperty(boottime_property, "").empty()) { |
| 218 | property_set(boottime_property, std::to_string(start_ns)); |
| 219 | } |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 220 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 221 | } |
| 222 | |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 223 | void Service::KillProcessGroup(int signal) { |
Tom Cherry | 33838b1 | 2017-05-04 11:32:36 -0700 | [diff] [blame] | 224 | // If we've already seen a successful result from killProcessGroup*(), then we have removed |
| 225 | // the cgroup already and calling these functions a second time will simply result in an error. |
| 226 | // This is true regardless of which signal was sent. |
| 227 | // These functions handle their own logging, so no additional logging is needed. |
| 228 | if (!process_cgroup_empty_) { |
| 229 | LOG(INFO) << "Sending signal " << signal << " to service '" << name_ << "' (pid " << pid_ |
| 230 | << ") process group..."; |
| 231 | int r; |
| 232 | if (signal == SIGTERM) { |
| 233 | r = killProcessGroupOnce(uid_, pid_, signal); |
| 234 | } else { |
| 235 | r = killProcessGroup(uid_, pid_, signal); |
| 236 | } |
| 237 | |
| 238 | if (r == 0) process_cgroup_empty_ = true; |
| 239 | } |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 240 | } |
| 241 | |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 242 | void Service::SetProcessAttributes() { |
Tom Cherry | 7ac013d | 2017-08-25 10:39:25 -0700 | [diff] [blame] | 243 | for (const auto& rlimit : rlimits_) { |
| 244 | if (setrlimit(rlimit.first, &rlimit.second) == -1) { |
| 245 | LOG(FATAL) << StringPrintf("setrlimit(%d, {rlim_cur=%ld, rlim_max=%ld}) failed", |
| 246 | rlimit.first, rlimit.second.rlim_cur, rlimit.second.rlim_max); |
| 247 | } |
| 248 | } |
Jorge Lucangeli Obes | 24b2913 | 2016-10-27 10:33:03 -0400 | [diff] [blame] | 249 | // Keep capabilites on uid change. |
| 250 | if (capabilities_.any() && uid_) { |
Luis Hector Chavez | f596551 | 2017-06-30 14:04:20 -0700 | [diff] [blame] | 251 | // If Android is running in a container, some securebits might already |
| 252 | // be locked, so don't change those. |
Ben Fennema | a724360 | 2017-07-25 14:37:21 -0700 | [diff] [blame] | 253 | unsigned long securebits = prctl(PR_GET_SECUREBITS); |
| 254 | if (securebits == -1UL) { |
Luis Hector Chavez | f596551 | 2017-06-30 14:04:20 -0700 | [diff] [blame] | 255 | PLOG(FATAL) << "prctl(PR_GET_SECUREBITS) failed for " << name_; |
| 256 | } |
| 257 | securebits |= SECBIT_KEEP_CAPS | SECBIT_KEEP_CAPS_LOCKED; |
| 258 | if (prctl(PR_SET_SECUREBITS, securebits) != 0) { |
| 259 | PLOG(FATAL) << "prctl(PR_SET_SECUREBITS) failed for " << name_; |
Jorge Lucangeli Obes | 24b2913 | 2016-10-27 10:33:03 -0400 | [diff] [blame] | 260 | } |
| 261 | } |
| 262 | |
Elliott Hughes | e18e7e5 | 2016-07-25 18:18:16 -0700 | [diff] [blame] | 263 | // TODO: work out why this fails for `console` then upgrade to FATAL. |
| 264 | if (setpgid(0, getpid()) == -1) PLOG(ERROR) << "setpgid failed for " << name_; |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 265 | |
| 266 | if (gid_) { |
| 267 | if (setgid(gid_) != 0) { |
Elliott Hughes | e18e7e5 | 2016-07-25 18:18:16 -0700 | [diff] [blame] | 268 | PLOG(FATAL) << "setgid failed for " << name_; |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 269 | } |
| 270 | } |
Nick Kralevich | 80960d2 | 2016-10-29 12:20:00 -0700 | [diff] [blame] | 271 | if (setgroups(supp_gids_.size(), &supp_gids_[0]) != 0) { |
| 272 | PLOG(FATAL) << "setgroups failed for " << name_; |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 273 | } |
| 274 | if (uid_) { |
| 275 | if (setuid(uid_) != 0) { |
Elliott Hughes | e18e7e5 | 2016-07-25 18:18:16 -0700 | [diff] [blame] | 276 | PLOG(FATAL) << "setuid failed for " << name_; |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 277 | } |
| 278 | } |
| 279 | if (!seclabel_.empty()) { |
| 280 | if (setexeccon(seclabel_.c_str()) < 0) { |
Elliott Hughes | e18e7e5 | 2016-07-25 18:18:16 -0700 | [diff] [blame] | 281 | PLOG(FATAL) << "cannot setexeccon('" << seclabel_ << "') for " << name_; |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 282 | } |
| 283 | } |
| 284 | if (priority_ != 0) { |
| 285 | if (setpriority(PRIO_PROCESS, 0, priority_) != 0) { |
Elliott Hughes | e18e7e5 | 2016-07-25 18:18:16 -0700 | [diff] [blame] | 286 | PLOG(FATAL) << "setpriority failed for " << name_; |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 287 | } |
| 288 | } |
Jorge Lucangeli Obes | 24b2913 | 2016-10-27 10:33:03 -0400 | [diff] [blame] | 289 | if (capabilities_.any()) { |
| 290 | if (!SetCapsForExec(capabilities_)) { |
| 291 | LOG(FATAL) << "cannot set capabilities for " << name_; |
| 292 | } |
Luis Hector Chavez | 94fb5b0 | 2017-11-16 15:52:00 -0800 | [diff] [blame] | 293 | } else if (uid_) { |
| 294 | // Inheritable caps can be non-zero when running in a container. |
| 295 | if (!DropInheritableCaps()) { |
| 296 | LOG(FATAL) << "cannot drop inheritable caps for " << name_; |
| 297 | } |
Jorge Lucangeli Obes | 24b2913 | 2016-10-27 10:33:03 -0400 | [diff] [blame] | 298 | } |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 299 | } |
| 300 | |
Paul Crowley | 959b055 | 2018-02-13 17:09:08 -0800 | [diff] [blame] | 301 | void Service::Reap(const siginfo_t& siginfo) { |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 302 | if (!(flags_ & SVC_ONESHOT) || (flags_ & SVC_RESTART)) { |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 303 | KillProcessGroup(SIGKILL); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 304 | } |
| 305 | |
Mark Salyzyn | 62767fe | 2016-10-27 07:45:34 -0700 | [diff] [blame] | 306 | // Remove any descriptor resources we may have created. |
| 307 | std::for_each(descriptors_.begin(), descriptors_.end(), |
| 308 | std::bind(&DescriptorInfo::Clean, std::placeholders::_1)); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 309 | |
Paul Crowley | 959b055 | 2018-02-13 17:09:08 -0800 | [diff] [blame] | 310 | for (const auto& f : reap_callbacks_) { |
| 311 | f(siginfo); |
| 312 | } |
| 313 | |
Tom Cherry | 3b81f2d | 2017-07-28 14:48:41 -0700 | [diff] [blame] | 314 | if (flags_ & SVC_EXEC) UnSetExec(); |
| 315 | |
| 316 | if (flags_ & SVC_TEMPORARY) return; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 317 | |
| 318 | pid_ = 0; |
| 319 | flags_ &= (~SVC_RUNNING); |
Tom Cherry | 5938379 | 2017-07-26 16:09:09 -0700 | [diff] [blame] | 320 | start_order_ = 0; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 321 | |
| 322 | // Oneshot processes go into the disabled state on exit, |
| 323 | // except when manually restarted. |
| 324 | if ((flags_ & SVC_ONESHOT) && !(flags_ & SVC_RESTART)) { |
| 325 | flags_ |= SVC_DISABLED; |
| 326 | } |
| 327 | |
| 328 | // Disabled and reset processes do not get restarted automatically. |
| 329 | if (flags_ & (SVC_DISABLED | SVC_RESET)) { |
| 330 | NotifyStateChange("stopped"); |
Tom Cherry | b27004a | 2017-03-27 16:27:30 -0700 | [diff] [blame] | 331 | return; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 332 | } |
| 333 | |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 334 | // If we crash > 4 times in 4 minutes, reboot into recovery. |
| 335 | boot_clock::time_point now = boot_clock::now(); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 336 | if ((flags_ & SVC_CRITICAL) && !(flags_ & SVC_RESTART)) { |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 337 | if (now < time_crashed_ + 4min) { |
| 338 | if (++crash_count_ > 4) { |
Tom Cherry | d8db7ab | 2017-08-17 17:28:30 -0700 | [diff] [blame] | 339 | LOG(FATAL) << "critical process '" << name_ << "' exited 4 times in 4 minutes"; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 340 | } |
| 341 | } else { |
| 342 | time_crashed_ = now; |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 343 | crash_count_ = 1; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 344 | } |
| 345 | } |
| 346 | |
| 347 | flags_ &= (~SVC_RESTART); |
| 348 | flags_ |= SVC_RESTARTING; |
| 349 | |
| 350 | // Execute all onrestart commands for this service. |
| 351 | onrestart_.ExecuteAllCommands(); |
| 352 | |
| 353 | NotifyStateChange("restarting"); |
Tom Cherry | b27004a | 2017-03-27 16:27:30 -0700 | [diff] [blame] | 354 | return; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 355 | } |
| 356 | |
| 357 | void Service::DumpState() const { |
Elliott Hughes | f86b5a6 | 2016-06-24 15:12:21 -0700 | [diff] [blame] | 358 | LOG(INFO) << "service " << name_; |
Tom Cherry | 81f5d3e | 2017-06-22 12:53:17 -0700 | [diff] [blame] | 359 | LOG(INFO) << " class '" << Join(classnames_, " ") << "'"; |
| 360 | LOG(INFO) << " exec " << Join(args_, " "); |
Mark Salyzyn | 62767fe | 2016-10-27 07:45:34 -0700 | [diff] [blame] | 361 | std::for_each(descriptors_.begin(), descriptors_.end(), |
| 362 | [] (const auto& info) { LOG(INFO) << *info; }); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 363 | } |
| 364 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 365 | Result<Success> Service::ParseCapabilities(const std::vector<std::string>& args) { |
Jorge Lucangeli Obes | 24b2913 | 2016-10-27 10:33:03 -0400 | [diff] [blame] | 366 | capabilities_ = 0; |
| 367 | |
Jorge Lucangeli Obes | f3f824e | 2016-12-15 12:13:38 -0500 | [diff] [blame] | 368 | if (!CapAmbientSupported()) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 369 | return Error() |
| 370 | << "capabilities requested but the kernel does not support ambient capabilities"; |
Jorge Lucangeli Obes | f3f824e | 2016-12-15 12:13:38 -0500 | [diff] [blame] | 371 | } |
| 372 | |
| 373 | unsigned int last_valid_cap = GetLastValidCap(); |
| 374 | if (last_valid_cap >= capabilities_.size()) { |
| 375 | LOG(WARNING) << "last valid run-time capability is larger than CAP_LAST_CAP"; |
| 376 | } |
| 377 | |
Jorge Lucangeli Obes | 24b2913 | 2016-10-27 10:33:03 -0400 | [diff] [blame] | 378 | for (size_t i = 1; i < args.size(); i++) { |
| 379 | const std::string& arg = args[i]; |
Jorge Lucangeli Obes | f3f824e | 2016-12-15 12:13:38 -0500 | [diff] [blame] | 380 | int res = LookupCap(arg); |
| 381 | if (res < 0) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 382 | return Error() << StringPrintf("invalid capability '%s'", arg.c_str()); |
Jorge Lucangeli Obes | 24b2913 | 2016-10-27 10:33:03 -0400 | [diff] [blame] | 383 | } |
Jorge Lucangeli Obes | f3f824e | 2016-12-15 12:13:38 -0500 | [diff] [blame] | 384 | unsigned int cap = static_cast<unsigned int>(res); // |res| is >= 0. |
| 385 | if (cap > last_valid_cap) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 386 | return Error() << StringPrintf("capability '%s' not supported by the kernel", |
| 387 | arg.c_str()); |
Jorge Lucangeli Obes | f3f824e | 2016-12-15 12:13:38 -0500 | [diff] [blame] | 388 | } |
Jorge Lucangeli Obes | 24b2913 | 2016-10-27 10:33:03 -0400 | [diff] [blame] | 389 | capabilities_[cap] = true; |
| 390 | } |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 391 | return Success(); |
Jorge Lucangeli Obes | 24b2913 | 2016-10-27 10:33:03 -0400 | [diff] [blame] | 392 | } |
| 393 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 394 | Result<Success> Service::ParseClass(const std::vector<std::string>& args) { |
Wei Wang | 641ff0a | 2017-03-27 10:59:11 -0700 | [diff] [blame] | 395 | classnames_ = std::set<std::string>(args.begin() + 1, args.end()); |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 396 | return Success(); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 397 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 398 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 399 | Result<Success> Service::ParseConsole(const std::vector<std::string>& args) { |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 400 | flags_ |= SVC_CONSOLE; |
Viorel Suman | 70daa67 | 2016-03-21 10:08:07 +0200 | [diff] [blame] | 401 | console_ = args.size() > 1 ? "/dev/" + args[1] : ""; |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 402 | return Success(); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 403 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 404 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 405 | Result<Success> Service::ParseCritical(const std::vector<std::string>& args) { |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 406 | flags_ |= SVC_CRITICAL; |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 407 | return Success(); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 408 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 409 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 410 | Result<Success> Service::ParseDisabled(const std::vector<std::string>& args) { |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 411 | flags_ |= SVC_DISABLED; |
| 412 | flags_ |= SVC_RC_DISABLED; |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 413 | return Success(); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 414 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 415 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 416 | Result<Success> Service::ParseGroup(const std::vector<std::string>& args) { |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 417 | auto gid = DecodeUid(args[1]); |
| 418 | if (!gid) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 419 | return Error() << "Unable to decode GID for '" << args[1] << "': " << gid.error(); |
Tom Cherry | 517e1f1 | 2017-05-04 17:40:33 -0700 | [diff] [blame] | 420 | } |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 421 | gid_ = *gid; |
| 422 | |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 423 | for (std::size_t n = 2; n < args.size(); n++) { |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 424 | gid = DecodeUid(args[n]); |
| 425 | if (!gid) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 426 | return Error() << "Unable to decode GID for '" << args[n] << "': " << gid.error(); |
Tom Cherry | 517e1f1 | 2017-05-04 17:40:33 -0700 | [diff] [blame] | 427 | } |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 428 | supp_gids_.emplace_back(*gid); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 429 | } |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 430 | return Success(); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 431 | } |
| 432 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 433 | Result<Success> Service::ParsePriority(const std::vector<std::string>& args) { |
Elliott Hughes | da46b39 | 2016-10-11 17:09:00 -0700 | [diff] [blame] | 434 | priority_ = 0; |
| 435 | if (!ParseInt(args[1], &priority_, |
Keun-young Park | dd34ca4 | 2016-11-11 18:06:31 -0800 | [diff] [blame] | 436 | static_cast<int>(ANDROID_PRIORITY_HIGHEST), // highest is negative |
| 437 | static_cast<int>(ANDROID_PRIORITY_LOWEST))) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 438 | return Error() << StringPrintf("process priority value must be range %d - %d", |
| 439 | ANDROID_PRIORITY_HIGHEST, ANDROID_PRIORITY_LOWEST); |
Vitalii Tomkiv | 081705c | 2016-05-18 17:36:30 -0700 | [diff] [blame] | 440 | } |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 441 | return Success(); |
Vitalii Tomkiv | 081705c | 2016-05-18 17:36:30 -0700 | [diff] [blame] | 442 | } |
| 443 | |
Steven Moreland | e055d73 | 2017-10-05 18:50:22 -0700 | [diff] [blame] | 444 | Result<Success> Service::ParseInterface(const std::vector<std::string>& args) { |
| 445 | const std::string& interface_name = args[1]; |
| 446 | const std::string& instance_name = args[2]; |
| 447 | |
| 448 | const FQName fq_name = FQName(interface_name); |
| 449 | if (!fq_name.isValid()) { |
| 450 | return Error() << "Invalid fully-qualified name for interface '" << interface_name << "'"; |
| 451 | } |
| 452 | |
| 453 | if (!fq_name.isFullyQualified()) { |
| 454 | return Error() << "Interface name not fully-qualified '" << interface_name << "'"; |
| 455 | } |
| 456 | |
| 457 | if (fq_name.isValidValueName()) { |
| 458 | return Error() << "Interface name must not be a value name '" << interface_name << "'"; |
| 459 | } |
| 460 | |
| 461 | const std::string fullname = interface_name + "/" + instance_name; |
| 462 | |
| 463 | for (const auto& svc : ServiceList::GetInstance()) { |
| 464 | if (svc->interfaces().count(fullname) > 0) { |
| 465 | return Error() << "Interface '" << fullname << "' redefined in " << name() |
| 466 | << " but is already defined by " << svc->name(); |
| 467 | } |
| 468 | } |
| 469 | |
| 470 | interfaces_.insert(fullname); |
| 471 | |
| 472 | return Success(); |
| 473 | } |
| 474 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 475 | Result<Success> Service::ParseIoprio(const std::vector<std::string>& args) { |
Elliott Hughes | da46b39 | 2016-10-11 17:09:00 -0700 | [diff] [blame] | 476 | if (!ParseInt(args[2], &ioprio_pri_, 0, 7)) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 477 | return Error() << "priority value must be range 0 - 7"; |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 478 | } |
| 479 | |
| 480 | if (args[1] == "rt") { |
| 481 | ioprio_class_ = IoSchedClass_RT; |
| 482 | } else if (args[1] == "be") { |
| 483 | ioprio_class_ = IoSchedClass_BE; |
| 484 | } else if (args[1] == "idle") { |
| 485 | ioprio_class_ = IoSchedClass_IDLE; |
| 486 | } else { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 487 | return Error() << "ioprio option usage: ioprio <rt|be|idle> <0-7>"; |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 488 | } |
| 489 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 490 | return Success(); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 491 | } |
| 492 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 493 | Result<Success> Service::ParseKeycodes(const std::vector<std::string>& args) { |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 494 | for (std::size_t i = 1; i < args.size(); i++) { |
Elliott Hughes | da46b39 | 2016-10-11 17:09:00 -0700 | [diff] [blame] | 495 | int code; |
| 496 | if (ParseInt(args[i], &code)) { |
| 497 | keycodes_.emplace_back(code); |
| 498 | } else { |
| 499 | LOG(WARNING) << "ignoring invalid keycode: " << args[i]; |
| 500 | } |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 501 | } |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 502 | return Success(); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 503 | } |
| 504 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 505 | Result<Success> Service::ParseOneshot(const std::vector<std::string>& args) { |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 506 | flags_ |= SVC_ONESHOT; |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 507 | return Success(); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 508 | } |
| 509 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 510 | Result<Success> Service::ParseOnrestart(const std::vector<std::string>& args) { |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 511 | std::vector<std::string> str_args(args.begin() + 1, args.end()); |
Tom Cherry | 012c573 | 2017-04-18 13:21:54 -0700 | [diff] [blame] | 512 | int line = onrestart_.NumCommands() + 1; |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 513 | if (auto result = onrestart_.AddCommand(str_args, line); !result) { |
| 514 | return Error() << "cannot add Onrestart command: " << result.error(); |
| 515 | } |
| 516 | return Success(); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 517 | } |
| 518 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 519 | Result<Success> Service::ParseNamespace(const std::vector<std::string>& args) { |
Jorge Lucangeli Obes | 1b3fa3d | 2016-04-21 15:35:09 -0700 | [diff] [blame] | 520 | for (size_t i = 1; i < args.size(); i++) { |
| 521 | if (args[i] == "pid") { |
| 522 | namespace_flags_ |= CLONE_NEWPID; |
| 523 | // PID namespaces require mount namespaces. |
| 524 | namespace_flags_ |= CLONE_NEWNS; |
| 525 | } else if (args[i] == "mnt") { |
| 526 | namespace_flags_ |= CLONE_NEWNS; |
| 527 | } else { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 528 | return Error() << "namespace must be 'pid' or 'mnt'"; |
Jorge Lucangeli Obes | 1b3fa3d | 2016-04-21 15:35:09 -0700 | [diff] [blame] | 529 | } |
| 530 | } |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 531 | return Success(); |
Jorge Lucangeli Obes | 1b3fa3d | 2016-04-21 15:35:09 -0700 | [diff] [blame] | 532 | } |
| 533 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 534 | Result<Success> Service::ParseOomScoreAdjust(const std::vector<std::string>& args) { |
Elliott Hughes | da46b39 | 2016-10-11 17:09:00 -0700 | [diff] [blame] | 535 | if (!ParseInt(args[1], &oom_score_adjust_, -1000, 1000)) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 536 | return Error() << "oom_score_adjust value must be in range -1000 - +1000"; |
Marco Nelissen | 310f670 | 2016-07-22 12:07:06 -0700 | [diff] [blame] | 537 | } |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 538 | return Success(); |
Marco Nelissen | 310f670 | 2016-07-22 12:07:06 -0700 | [diff] [blame] | 539 | } |
| 540 | |
Steven Moreland | 6f5333a | 2017-11-13 15:31:54 -0800 | [diff] [blame] | 541 | Result<Success> Service::ParseOverride(const std::vector<std::string>& args) { |
| 542 | override_ = true; |
| 543 | return Success(); |
| 544 | } |
| 545 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 546 | Result<Success> Service::ParseMemcgSwappiness(const std::vector<std::string>& args) { |
Robert Benea | d485226 | 2017-07-16 19:38:11 -0700 | [diff] [blame] | 547 | if (!ParseInt(args[1], &swappiness_, 0)) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 548 | return Error() << "swappiness value must be equal or greater than 0"; |
Robert Benea | d485226 | 2017-07-16 19:38:11 -0700 | [diff] [blame] | 549 | } |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 550 | return Success(); |
Robert Benea | d485226 | 2017-07-16 19:38:11 -0700 | [diff] [blame] | 551 | } |
| 552 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 553 | Result<Success> Service::ParseMemcgLimitInBytes(const std::vector<std::string>& args) { |
Robert Benea | d485226 | 2017-07-16 19:38:11 -0700 | [diff] [blame] | 554 | if (!ParseInt(args[1], &limit_in_bytes_, 0)) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 555 | return Error() << "limit_in_bytes value must be equal or greater than 0"; |
Robert Benea | d485226 | 2017-07-16 19:38:11 -0700 | [diff] [blame] | 556 | } |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 557 | return Success(); |
Robert Benea | d485226 | 2017-07-16 19:38:11 -0700 | [diff] [blame] | 558 | } |
| 559 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 560 | Result<Success> Service::ParseMemcgSoftLimitInBytes(const std::vector<std::string>& args) { |
Robert Benea | d485226 | 2017-07-16 19:38:11 -0700 | [diff] [blame] | 561 | if (!ParseInt(args[1], &soft_limit_in_bytes_, 0)) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 562 | return Error() << "soft_limit_in_bytes value must be equal or greater than 0"; |
Robert Benea | d485226 | 2017-07-16 19:38:11 -0700 | [diff] [blame] | 563 | } |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 564 | return Success(); |
Robert Benea | d485226 | 2017-07-16 19:38:11 -0700 | [diff] [blame] | 565 | } |
| 566 | |
Tom Cherry | 7ac013d | 2017-08-25 10:39:25 -0700 | [diff] [blame] | 567 | Result<Success> Service::ParseProcessRlimit(const std::vector<std::string>& args) { |
| 568 | auto rlimit = ParseRlimit(args); |
| 569 | if (!rlimit) return rlimit.error(); |
| 570 | |
| 571 | rlimits_.emplace_back(*rlimit); |
| 572 | return Success(); |
| 573 | } |
| 574 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 575 | Result<Success> Service::ParseSeclabel(const std::vector<std::string>& args) { |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 576 | seclabel_ = args[1]; |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 577 | return Success(); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 578 | } |
| 579 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 580 | Result<Success> Service::ParseSetenv(const std::vector<std::string>& args) { |
Tom Cherry | 6de21f1 | 2017-08-22 15:41:03 -0700 | [diff] [blame] | 581 | environment_vars_.emplace_back(args[1], args[2]); |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 582 | return Success(); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 583 | } |
| 584 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 585 | Result<Success> Service::ParseShutdown(const std::vector<std::string>& args) { |
Keun-young Park | cccb34f | 2017-07-05 11:38:44 -0700 | [diff] [blame] | 586 | if (args[1] == "critical") { |
| 587 | flags_ |= SVC_SHUTDOWN_CRITICAL; |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 588 | return Success(); |
Keun-young Park | cccb34f | 2017-07-05 11:38:44 -0700 | [diff] [blame] | 589 | } |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 590 | return Error() << "Invalid shutdown option"; |
Keun-young Park | cccb34f | 2017-07-05 11:38:44 -0700 | [diff] [blame] | 591 | } |
| 592 | |
Mark Salyzyn | 62767fe | 2016-10-27 07:45:34 -0700 | [diff] [blame] | 593 | template <typename T> |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 594 | Result<Success> Service::AddDescriptor(const std::vector<std::string>& args) { |
Mark Salyzyn | 62767fe | 2016-10-27 07:45:34 -0700 | [diff] [blame] | 595 | int perm = args.size() > 3 ? std::strtoul(args[3].c_str(), 0, 8) : -1; |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 596 | Result<uid_t> uid = 0; |
| 597 | Result<gid_t> gid = 0; |
Mark Salyzyn | 62767fe | 2016-10-27 07:45:34 -0700 | [diff] [blame] | 598 | std::string context = args.size() > 6 ? args[6] : ""; |
| 599 | |
Tom Cherry | 517e1f1 | 2017-05-04 17:40:33 -0700 | [diff] [blame] | 600 | if (args.size() > 4) { |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 601 | uid = DecodeUid(args[4]); |
| 602 | if (!uid) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 603 | return Error() << "Unable to find UID for '" << args[4] << "': " << uid.error(); |
Tom Cherry | 517e1f1 | 2017-05-04 17:40:33 -0700 | [diff] [blame] | 604 | } |
| 605 | } |
| 606 | |
| 607 | if (args.size() > 5) { |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 608 | gid = DecodeUid(args[5]); |
| 609 | if (!gid) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 610 | return Error() << "Unable to find GID for '" << args[5] << "': " << gid.error(); |
Tom Cherry | 517e1f1 | 2017-05-04 17:40:33 -0700 | [diff] [blame] | 611 | } |
| 612 | } |
| 613 | |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 614 | auto descriptor = std::make_unique<T>(args[1], args[2], *uid, *gid, perm, context); |
Mark Salyzyn | 62767fe | 2016-10-27 07:45:34 -0700 | [diff] [blame] | 615 | |
| 616 | auto old = |
| 617 | std::find_if(descriptors_.begin(), descriptors_.end(), |
| 618 | [&descriptor] (const auto& other) { return descriptor.get() == other.get(); }); |
| 619 | |
| 620 | if (old != descriptors_.end()) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 621 | return Error() << "duplicate descriptor " << args[1] << " " << args[2]; |
Mark Salyzyn | 62767fe | 2016-10-27 07:45:34 -0700 | [diff] [blame] | 622 | } |
| 623 | |
| 624 | descriptors_.emplace_back(std::move(descriptor)); |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 625 | return Success(); |
Mark Salyzyn | 62767fe | 2016-10-27 07:45:34 -0700 | [diff] [blame] | 626 | } |
| 627 | |
| 628 | // name type perm [ uid gid context ] |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 629 | Result<Success> Service::ParseSocket(const std::vector<std::string>& args) { |
Tom Cherry | 81f5d3e | 2017-06-22 12:53:17 -0700 | [diff] [blame] | 630 | if (!StartsWith(args[2], "dgram") && !StartsWith(args[2], "stream") && |
| 631 | !StartsWith(args[2], "seqpacket")) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 632 | return Error() << "socket type must be 'dgram', 'stream' or 'seqpacket'"; |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 633 | } |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 634 | return AddDescriptor<SocketInfo>(args); |
Mark Salyzyn | 62767fe | 2016-10-27 07:45:34 -0700 | [diff] [blame] | 635 | } |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 636 | |
Mark Salyzyn | 62767fe | 2016-10-27 07:45:34 -0700 | [diff] [blame] | 637 | // name type perm [ uid gid context ] |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 638 | Result<Success> Service::ParseFile(const std::vector<std::string>& args) { |
Mark Salyzyn | 62767fe | 2016-10-27 07:45:34 -0700 | [diff] [blame] | 639 | if (args[2] != "r" && args[2] != "w" && args[2] != "rw") { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 640 | return Error() << "file type must be 'r', 'w' or 'rw'"; |
Mark Salyzyn | 62767fe | 2016-10-27 07:45:34 -0700 | [diff] [blame] | 641 | } |
| 642 | if ((args[1][0] != '/') || (args[1].find("../") != std::string::npos)) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 643 | return Error() << "file name must not be relative"; |
Mark Salyzyn | 62767fe | 2016-10-27 07:45:34 -0700 | [diff] [blame] | 644 | } |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 645 | return AddDescriptor<FileInfo>(args); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 646 | } |
| 647 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 648 | Result<Success> Service::ParseUser(const std::vector<std::string>& args) { |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 649 | auto uid = DecodeUid(args[1]); |
| 650 | if (!uid) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 651 | return Error() << "Unable to find UID for '" << args[1] << "': " << uid.error(); |
Tom Cherry | 517e1f1 | 2017-05-04 17:40:33 -0700 | [diff] [blame] | 652 | } |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 653 | uid_ = *uid; |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 654 | return Success(); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 655 | } |
| 656 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 657 | Result<Success> Service::ParseWritepid(const std::vector<std::string>& args) { |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 658 | writepid_files_.assign(args.begin() + 1, args.end()); |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 659 | return Success(); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 660 | } |
| 661 | |
Jorge Lucangeli Obes | 177b27d | 2016-06-29 14:32:49 -0400 | [diff] [blame] | 662 | class Service::OptionParserMap : public KeywordMap<OptionParser> { |
Tom Cherry | ad54d09 | 2017-04-19 16:18:50 -0700 | [diff] [blame] | 663 | public: |
| 664 | OptionParserMap() {} |
| 665 | |
| 666 | private: |
| 667 | const Map& map() const override; |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 668 | }; |
| 669 | |
Tom Cherry | ad54d09 | 2017-04-19 16:18:50 -0700 | [diff] [blame] | 670 | const Service::OptionParserMap::Map& Service::OptionParserMap::map() const { |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 671 | constexpr std::size_t kMax = std::numeric_limits<std::size_t>::max(); |
Wei Wang | 641ff0a | 2017-03-27 10:59:11 -0700 | [diff] [blame] | 672 | // clang-format off |
Jorge Lucangeli Obes | 177b27d | 2016-06-29 14:32:49 -0400 | [diff] [blame] | 673 | static const Map option_parsers = { |
Jorge Lucangeli Obes | 24b2913 | 2016-10-27 10:33:03 -0400 | [diff] [blame] | 674 | {"capabilities", |
| 675 | {1, kMax, &Service::ParseCapabilities}}, |
Wei Wang | 641ff0a | 2017-03-27 10:59:11 -0700 | [diff] [blame] | 676 | {"class", {1, kMax, &Service::ParseClass}}, |
Jorge Lucangeli Obes | 177b27d | 2016-06-29 14:32:49 -0400 | [diff] [blame] | 677 | {"console", {0, 1, &Service::ParseConsole}}, |
| 678 | {"critical", {0, 0, &Service::ParseCritical}}, |
| 679 | {"disabled", {0, 0, &Service::ParseDisabled}}, |
| 680 | {"group", {1, NR_SVC_SUPP_GIDS + 1, &Service::ParseGroup}}, |
Steven Moreland | e055d73 | 2017-10-05 18:50:22 -0700 | [diff] [blame] | 681 | {"interface", {2, 2, &Service::ParseInterface}}, |
Jorge Lucangeli Obes | 177b27d | 2016-06-29 14:32:49 -0400 | [diff] [blame] | 682 | {"ioprio", {2, 2, &Service::ParseIoprio}}, |
| 683 | {"priority", {1, 1, &Service::ParsePriority}}, |
| 684 | {"keycodes", {1, kMax, &Service::ParseKeycodes}}, |
| 685 | {"oneshot", {0, 0, &Service::ParseOneshot}}, |
| 686 | {"onrestart", {1, kMax, &Service::ParseOnrestart}}, |
Steven Moreland | 6f5333a | 2017-11-13 15:31:54 -0800 | [diff] [blame] | 687 | {"override", {0, 0, &Service::ParseOverride}}, |
Marco Nelissen | 310f670 | 2016-07-22 12:07:06 -0700 | [diff] [blame] | 688 | {"oom_score_adjust", |
| 689 | {1, 1, &Service::ParseOomScoreAdjust}}, |
Robert Benea | d485226 | 2017-07-16 19:38:11 -0700 | [diff] [blame] | 690 | {"memcg.swappiness", |
| 691 | {1, 1, &Service::ParseMemcgSwappiness}}, |
| 692 | {"memcg.soft_limit_in_bytes", |
| 693 | {1, 1, &Service::ParseMemcgSoftLimitInBytes}}, |
| 694 | {"memcg.limit_in_bytes", |
| 695 | {1, 1, &Service::ParseMemcgLimitInBytes}}, |
Jorge Lucangeli Obes | 177b27d | 2016-06-29 14:32:49 -0400 | [diff] [blame] | 696 | {"namespace", {1, 2, &Service::ParseNamespace}}, |
Tom Cherry | 7ac013d | 2017-08-25 10:39:25 -0700 | [diff] [blame] | 697 | {"rlimit", {3, 3, &Service::ParseProcessRlimit}}, |
Jorge Lucangeli Obes | 177b27d | 2016-06-29 14:32:49 -0400 | [diff] [blame] | 698 | {"seclabel", {1, 1, &Service::ParseSeclabel}}, |
| 699 | {"setenv", {2, 2, &Service::ParseSetenv}}, |
Keun-young Park | cccb34f | 2017-07-05 11:38:44 -0700 | [diff] [blame] | 700 | {"shutdown", {1, 1, &Service::ParseShutdown}}, |
Jorge Lucangeli Obes | 177b27d | 2016-06-29 14:32:49 -0400 | [diff] [blame] | 701 | {"socket", {3, 6, &Service::ParseSocket}}, |
Mark Salyzyn | 978fd0e | 2016-12-02 08:05:22 -0800 | [diff] [blame] | 702 | {"file", {2, 2, &Service::ParseFile}}, |
Jorge Lucangeli Obes | 177b27d | 2016-06-29 14:32:49 -0400 | [diff] [blame] | 703 | {"user", {1, 1, &Service::ParseUser}}, |
| 704 | {"writepid", {1, kMax, &Service::ParseWritepid}}, |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 705 | }; |
Wei Wang | 641ff0a | 2017-03-27 10:59:11 -0700 | [diff] [blame] | 706 | // clang-format on |
Jorge Lucangeli Obes | 177b27d | 2016-06-29 14:32:49 -0400 | [diff] [blame] | 707 | return option_parsers; |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 708 | } |
| 709 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 710 | Result<Success> Service::ParseLine(const std::vector<std::string>& args) { |
Jorge Lucangeli Obes | 177b27d | 2016-06-29 14:32:49 -0400 | [diff] [blame] | 711 | static const OptionParserMap parser_map; |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 712 | auto parser = parser_map.FindFunction(args); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 713 | |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 714 | if (!parser) return parser.error(); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 715 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 716 | return std::invoke(*parser, this, args); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 717 | } |
| 718 | |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 719 | Result<Success> Service::ExecStart() { |
Tom Cherry | 3b81f2d | 2017-07-28 14:48:41 -0700 | [diff] [blame] | 720 | flags_ |= SVC_ONESHOT; |
Tom Cherry | b27004a | 2017-03-27 16:27:30 -0700 | [diff] [blame] | 721 | |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 722 | if (auto result = Start(); !result) { |
| 723 | return result; |
Tom Cherry | b27004a | 2017-03-27 16:27:30 -0700 | [diff] [blame] | 724 | } |
Tom Cherry | 3b81f2d | 2017-07-28 14:48:41 -0700 | [diff] [blame] | 725 | |
| 726 | flags_ |= SVC_EXEC; |
| 727 | is_exec_service_running_ = true; |
| 728 | |
| 729 | LOG(INFO) << "SVC_EXEC pid " << pid_ << " (uid " << uid_ << " gid " << gid_ << "+" |
| 730 | << supp_gids_.size() << " context " << (!seclabel_.empty() ? seclabel_ : "default") |
| 731 | << ") started; waiting..."; |
| 732 | |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 733 | return Success(); |
Tom Cherry | b27004a | 2017-03-27 16:27:30 -0700 | [diff] [blame] | 734 | } |
| 735 | |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 736 | Result<Success> Service::Start() { |
Tao Wu | 990d43c | 2017-10-26 10:43:10 -0700 | [diff] [blame] | 737 | bool disabled = (flags_ & (SVC_DISABLED | SVC_RESET)); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 738 | // Starting a service removes it from the disabled or reset state and |
| 739 | // immediately takes it out of the restarting state if it was in there. |
| 740 | flags_ &= (~(SVC_DISABLED|SVC_RESTARTING|SVC_RESET|SVC_RESTART|SVC_DISABLED_START)); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 741 | |
| 742 | // Running processes require no additional work --- if they're in the |
| 743 | // process of exiting, we've ensured that they will immediately restart |
Tao Wu | 990d43c | 2017-10-26 10:43:10 -0700 | [diff] [blame] | 744 | // on exit, unless they are ONESHOT. For ONESHOT service, if it's in |
| 745 | // stopping status, we just set SVC_RESTART flag so it will get restarted |
| 746 | // in Reap(). |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 747 | if (flags_ & SVC_RUNNING) { |
Tao Wu | 990d43c | 2017-10-26 10:43:10 -0700 | [diff] [blame] | 748 | if ((flags_ & SVC_ONESHOT) && disabled) { |
| 749 | flags_ |= SVC_RESTART; |
| 750 | } |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 751 | // It is not an error to try to start a service that is already running. |
| 752 | return Success(); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 753 | } |
| 754 | |
| 755 | bool needs_console = (flags_ & SVC_CONSOLE); |
Viorel Suman | 70daa67 | 2016-03-21 10:08:07 +0200 | [diff] [blame] | 756 | if (needs_console) { |
| 757 | if (console_.empty()) { |
| 758 | console_ = default_console; |
| 759 | } |
| 760 | |
Adrian Salido | 24ef860 | 2016-12-20 15:52:15 -0800 | [diff] [blame] | 761 | // Make sure that open call succeeds to ensure a console driver is |
| 762 | // properly registered for the device node |
| 763 | int console_fd = open(console_.c_str(), O_RDWR | O_CLOEXEC); |
| 764 | if (console_fd < 0) { |
Viorel Suman | 70daa67 | 2016-03-21 10:08:07 +0200 | [diff] [blame] | 765 | flags_ |= SVC_DISABLED; |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 766 | return ErrnoError() << "Couldn't open console '" << console_ << "'"; |
Viorel Suman | 70daa67 | 2016-03-21 10:08:07 +0200 | [diff] [blame] | 767 | } |
Adrian Salido | 24ef860 | 2016-12-20 15:52:15 -0800 | [diff] [blame] | 768 | close(console_fd); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 769 | } |
| 770 | |
| 771 | struct stat sb; |
| 772 | if (stat(args_[0].c_str(), &sb) == -1) { |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 773 | flags_ |= SVC_DISABLED; |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 774 | return ErrnoError() << "Cannot find '" << args_[0] << "'"; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 775 | } |
| 776 | |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 777 | std::string scon; |
| 778 | if (!seclabel_.empty()) { |
| 779 | scon = seclabel_; |
| 780 | } else { |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 781 | auto result = ComputeContextFromExecutable(name_, args_[0]); |
| 782 | if (!result) { |
| 783 | return result.error(); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 784 | } |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 785 | scon = *result; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 786 | } |
| 787 | |
Wei Wang | a285dac | 2016-10-04 14:05:39 -0700 | [diff] [blame] | 788 | LOG(INFO) << "starting service '" << name_ << "'..."; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 789 | |
Jorge Lucangeli Obes | 1b3fa3d | 2016-04-21 15:35:09 -0700 | [diff] [blame] | 790 | pid_t pid = -1; |
| 791 | if (namespace_flags_) { |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 792 | pid = clone(nullptr, nullptr, namespace_flags_ | SIGCHLD, nullptr); |
Jorge Lucangeli Obes | 1b3fa3d | 2016-04-21 15:35:09 -0700 | [diff] [blame] | 793 | } else { |
| 794 | pid = fork(); |
| 795 | } |
| 796 | |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 797 | if (pid == 0) { |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 798 | umask(077); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 799 | |
Jorge Lucangeli Obes | 1b3fa3d | 2016-04-21 15:35:09 -0700 | [diff] [blame] | 800 | if (namespace_flags_ & CLONE_NEWPID) { |
| 801 | // This will fork again to run an init process inside the PID |
| 802 | // namespace. |
| 803 | SetUpPidNamespace(name_); |
| 804 | } |
| 805 | |
Tom Cherry | 6de21f1 | 2017-08-22 15:41:03 -0700 | [diff] [blame] | 806 | for (const auto& [key, value] : environment_vars_) { |
| 807 | setenv(key.c_str(), value.c_str(), 1); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 808 | } |
| 809 | |
Mark Salyzyn | 62767fe | 2016-10-27 07:45:34 -0700 | [diff] [blame] | 810 | std::for_each(descriptors_.begin(), descriptors_.end(), |
| 811 | std::bind(&DescriptorInfo::CreateAndPublish, std::placeholders::_1, scon)); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 812 | |
Alex Vakulenko | 0828676 | 2016-05-03 12:00:00 -0700 | [diff] [blame] | 813 | // See if there were "writepid" instructions to write to files under /dev/cpuset/. |
| 814 | auto cpuset_predicate = [](const std::string& path) { |
Tom Cherry | 81f5d3e | 2017-06-22 12:53:17 -0700 | [diff] [blame] | 815 | return StartsWith(path, "/dev/cpuset/"); |
Alex Vakulenko | 0828676 | 2016-05-03 12:00:00 -0700 | [diff] [blame] | 816 | }; |
| 817 | auto iter = std::find_if(writepid_files_.begin(), writepid_files_.end(), cpuset_predicate); |
| 818 | if (iter == writepid_files_.end()) { |
| 819 | // There were no "writepid" instructions for cpusets, check if the system default |
| 820 | // cpuset is specified to be used for the process. |
Tom Cherry | 81f5d3e | 2017-06-22 12:53:17 -0700 | [diff] [blame] | 821 | std::string default_cpuset = GetProperty("ro.cpuset.default", ""); |
Alex Vakulenko | 0828676 | 2016-05-03 12:00:00 -0700 | [diff] [blame] | 822 | if (!default_cpuset.empty()) { |
| 823 | // Make sure the cpuset name starts and ends with '/'. |
| 824 | // A single '/' means the 'root' cpuset. |
| 825 | if (default_cpuset.front() != '/') { |
| 826 | default_cpuset.insert(0, 1, '/'); |
| 827 | } |
| 828 | if (default_cpuset.back() != '/') { |
| 829 | default_cpuset.push_back('/'); |
| 830 | } |
| 831 | writepid_files_.push_back( |
| 832 | StringPrintf("/dev/cpuset%stasks", default_cpuset.c_str())); |
| 833 | } |
| 834 | } |
Tom Cherry | 1c3a53f | 2017-06-22 16:50:31 -0700 | [diff] [blame] | 835 | std::string pid_str = std::to_string(getpid()); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 836 | for (const auto& file : writepid_files_) { |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 837 | if (!WriteStringToFile(pid_str, file)) { |
Elliott Hughes | f86b5a6 | 2016-06-24 15:12:21 -0700 | [diff] [blame] | 838 | PLOG(ERROR) << "couldn't write " << pid_str << " to " << file; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 839 | } |
| 840 | } |
| 841 | |
| 842 | if (ioprio_class_ != IoSchedClass_NONE) { |
| 843 | if (android_set_ioprio(getpid(), ioprio_class_, ioprio_pri_)) { |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 844 | PLOG(ERROR) << "failed to set pid " << getpid() |
Elliott Hughes | f86b5a6 | 2016-06-24 15:12:21 -0700 | [diff] [blame] | 845 | << " ioprio=" << ioprio_class_ << "," << ioprio_pri_; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 846 | } |
| 847 | } |
| 848 | |
| 849 | if (needs_console) { |
| 850 | setsid(); |
| 851 | OpenConsole(); |
| 852 | } else { |
| 853 | ZapStdio(); |
| 854 | } |
| 855 | |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 856 | // As requested, set our gid, supplemental gids, uid, context, and |
| 857 | // priority. Aborts on failure. |
| 858 | SetProcessAttributes(); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 859 | |
Tom Cherry | 5e405ca | 2017-09-11 16:08:54 -0700 | [diff] [blame] | 860 | if (!ExpandArgsAndExecv(args_)) { |
| 861 | PLOG(ERROR) << "cannot execve('" << args_[0] << "')"; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 862 | } |
| 863 | |
| 864 | _exit(127); |
| 865 | } |
| 866 | |
| 867 | if (pid < 0) { |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 868 | pid_ = 0; |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 869 | return ErrnoError() << "Failed to fork"; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 870 | } |
| 871 | |
Marco Nelissen | 310f670 | 2016-07-22 12:07:06 -0700 | [diff] [blame] | 872 | if (oom_score_adjust_ != -1000) { |
Tom Cherry | 1c3a53f | 2017-06-22 16:50:31 -0700 | [diff] [blame] | 873 | std::string oom_str = std::to_string(oom_score_adjust_); |
Marco Nelissen | 310f670 | 2016-07-22 12:07:06 -0700 | [diff] [blame] | 874 | std::string oom_file = StringPrintf("/proc/%d/oom_score_adj", pid); |
| 875 | if (!WriteStringToFile(oom_str, oom_file)) { |
| 876 | PLOG(ERROR) << "couldn't write oom_score_adj: " << strerror(errno); |
| 877 | } |
| 878 | } |
| 879 | |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 880 | time_started_ = boot_clock::now(); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 881 | pid_ = pid; |
| 882 | flags_ |= SVC_RUNNING; |
Tom Cherry | 5938379 | 2017-07-26 16:09:09 -0700 | [diff] [blame] | 883 | start_order_ = next_start_order_++; |
Tom Cherry | 33838b1 | 2017-05-04 11:32:36 -0700 | [diff] [blame] | 884 | process_cgroup_empty_ = false; |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 885 | |
| 886 | errno = -createProcessGroup(uid_, pid_); |
| 887 | if (errno != 0) { |
Jorge Lucangeli Obes | 344d01f | 2016-07-08 13:32:26 -0400 | [diff] [blame] | 888 | PLOG(ERROR) << "createProcessGroup(" << uid_ << ", " << pid_ << ") failed for service '" |
| 889 | << name_ << "'"; |
Robert Benea | d485226 | 2017-07-16 19:38:11 -0700 | [diff] [blame] | 890 | } else { |
| 891 | if (swappiness_ != -1) { |
| 892 | if (!setProcessGroupSwappiness(uid_, pid_, swappiness_)) { |
| 893 | PLOG(ERROR) << "setProcessGroupSwappiness failed"; |
| 894 | } |
| 895 | } |
| 896 | |
| 897 | if (soft_limit_in_bytes_ != -1) { |
| 898 | if (!setProcessGroupSoftLimit(uid_, pid_, soft_limit_in_bytes_)) { |
| 899 | PLOG(ERROR) << "setProcessGroupSoftLimit failed"; |
| 900 | } |
| 901 | } |
| 902 | |
| 903 | if (limit_in_bytes_ != -1) { |
| 904 | if (!setProcessGroupLimit(uid_, pid_, limit_in_bytes_)) { |
| 905 | PLOG(ERROR) << "setProcessGroupLimit failed"; |
| 906 | } |
| 907 | } |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 908 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 909 | |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 910 | NotifyStateChange("running"); |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 911 | return Success(); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 912 | } |
| 913 | |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 914 | Result<Success> Service::StartIfNotDisabled() { |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 915 | if (!(flags_ & SVC_DISABLED)) { |
| 916 | return Start(); |
| 917 | } else { |
| 918 | flags_ |= SVC_DISABLED_START; |
| 919 | } |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 920 | return Success(); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 921 | } |
| 922 | |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 923 | Result<Success> Service::Enable() { |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 924 | flags_ &= ~(SVC_DISABLED | SVC_RC_DISABLED); |
| 925 | if (flags_ & SVC_DISABLED_START) { |
| 926 | return Start(); |
| 927 | } |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 928 | return Success(); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 929 | } |
| 930 | |
| 931 | void Service::Reset() { |
| 932 | StopOrReset(SVC_RESET); |
| 933 | } |
| 934 | |
| 935 | void Service::Stop() { |
| 936 | StopOrReset(SVC_DISABLED); |
| 937 | } |
| 938 | |
Bertrand SIMONNET | b7e03e8 | 2015-12-18 11:39:59 -0800 | [diff] [blame] | 939 | void Service::Terminate() { |
| 940 | flags_ &= ~(SVC_RESTARTING | SVC_DISABLED_START); |
| 941 | flags_ |= SVC_DISABLED; |
| 942 | if (pid_) { |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 943 | KillProcessGroup(SIGTERM); |
Bertrand SIMONNET | b7e03e8 | 2015-12-18 11:39:59 -0800 | [diff] [blame] | 944 | NotifyStateChange("stopping"); |
| 945 | } |
| 946 | } |
| 947 | |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 948 | void Service::Restart() { |
| 949 | if (flags_ & SVC_RUNNING) { |
| 950 | /* Stop, wait, then start the service. */ |
| 951 | StopOrReset(SVC_RESTART); |
| 952 | } else if (!(flags_ & SVC_RESTARTING)) { |
| 953 | /* Just start the service since it's not running. */ |
Tom Cherry | 76af7e6 | 2017-08-22 16:13:59 -0700 | [diff] [blame] | 954 | if (auto result = Start(); !result) { |
| 955 | LOG(ERROR) << "Could not restart '" << name_ << "': " << result.error(); |
| 956 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 957 | } /* else: Service is restarting anyways. */ |
| 958 | } |
| 959 | |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 960 | // 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] | 961 | void Service::StopOrReset(int how) { |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 962 | // The service is still SVC_RUNNING until its process exits, but if it has |
| 963 | // already exited it shoudn't attempt a restart yet. |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 964 | flags_ &= ~(SVC_RESTARTING | SVC_DISABLED_START); |
| 965 | |
| 966 | if ((how != SVC_DISABLED) && (how != SVC_RESET) && (how != SVC_RESTART)) { |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 967 | // An illegal flag: default to SVC_DISABLED. |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 968 | how = SVC_DISABLED; |
| 969 | } |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 970 | |
| 971 | // 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] | 972 | if (how == SVC_RESET) { |
| 973 | flags_ |= (flags_ & SVC_RC_DISABLED) ? SVC_DISABLED : SVC_RESET; |
| 974 | } else { |
| 975 | flags_ |= how; |
| 976 | } |
Tao Wu | 84b856d | 2017-10-27 11:29:13 -0700 | [diff] [blame] | 977 | // Make sure it's in right status when a restart immediately follow a |
| 978 | // stop/reset or vice versa. |
| 979 | if (how == SVC_RESTART) { |
| 980 | flags_ &= (~(SVC_DISABLED | SVC_RESET)); |
| 981 | } else { |
| 982 | flags_ &= (~SVC_RESTART); |
| 983 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 984 | |
| 985 | if (pid_) { |
Elliott Hughes | ad8e94e | 2016-06-15 14:49:57 -0700 | [diff] [blame] | 986 | KillProcessGroup(SIGKILL); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 987 | NotifyStateChange("stopping"); |
| 988 | } else { |
| 989 | NotifyStateChange("stopped"); |
| 990 | } |
| 991 | } |
| 992 | |
| 993 | void Service::ZapStdio() const { |
| 994 | int fd; |
| 995 | fd = open("/dev/null", O_RDWR); |
| 996 | dup2(fd, 0); |
| 997 | dup2(fd, 1); |
| 998 | dup2(fd, 2); |
| 999 | close(fd); |
| 1000 | } |
| 1001 | |
| 1002 | void Service::OpenConsole() const { |
Viorel Suman | 70daa67 | 2016-03-21 10:08:07 +0200 | [diff] [blame] | 1003 | int fd = open(console_.c_str(), O_RDWR); |
| 1004 | if (fd == -1) fd = open("/dev/null", O_RDWR); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 1005 | ioctl(fd, TIOCSCTTY, 0); |
| 1006 | dup2(fd, 0); |
| 1007 | dup2(fd, 1); |
| 1008 | dup2(fd, 2); |
| 1009 | close(fd); |
| 1010 | } |
| 1011 | |
Tom Cherry | 911b9b1 | 2017-07-27 16:20:58 -0700 | [diff] [blame] | 1012 | ServiceList::ServiceList() {} |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 1013 | |
Tom Cherry | 911b9b1 | 2017-07-27 16:20:58 -0700 | [diff] [blame] | 1014 | ServiceList& ServiceList::GetInstance() { |
| 1015 | static ServiceList instance; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 1016 | return instance; |
| 1017 | } |
| 1018 | |
Tom Cherry | 911b9b1 | 2017-07-27 16:20:58 -0700 | [diff] [blame] | 1019 | void ServiceList::AddService(std::unique_ptr<Service> service) { |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 1020 | services_.emplace_back(std::move(service)); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 1021 | } |
| 1022 | |
Tom Cherry | 3b81f2d | 2017-07-28 14:48:41 -0700 | [diff] [blame] | 1023 | std::unique_ptr<Service> Service::MakeTemporaryOneshotService(const std::vector<std::string>& args) { |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 1024 | // Parse the arguments: exec [SECLABEL [UID [GID]*] --] COMMAND ARGS... |
| 1025 | // SECLABEL can be a - to denote default |
| 1026 | std::size_t command_arg = 1; |
| 1027 | for (std::size_t i = 1; i < args.size(); ++i) { |
| 1028 | if (args[i] == "--") { |
| 1029 | command_arg = i + 1; |
| 1030 | break; |
| 1031 | } |
| 1032 | } |
| 1033 | if (command_arg > 4 + NR_SVC_SUPP_GIDS) { |
Elliott Hughes | f86b5a6 | 2016-06-24 15:12:21 -0700 | [diff] [blame] | 1034 | LOG(ERROR) << "exec called with too many supplementary group ids"; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 1035 | return nullptr; |
| 1036 | } |
| 1037 | |
| 1038 | if (command_arg >= args.size()) { |
Elliott Hughes | f86b5a6 | 2016-06-24 15:12:21 -0700 | [diff] [blame] | 1039 | LOG(ERROR) << "exec called without command"; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 1040 | return nullptr; |
| 1041 | } |
| 1042 | std::vector<std::string> str_args(args.begin() + command_arg, args.end()); |
| 1043 | |
Tom Cherry | 3b81f2d | 2017-07-28 14:48:41 -0700 | [diff] [blame] | 1044 | static size_t exec_count = 0; |
| 1045 | exec_count++; |
| 1046 | std::string name = "exec " + std::to_string(exec_count) + " (" + Join(str_args, " ") + ")"; |
Tom Cherry | 86e31a8 | 2017-04-25 17:31:06 -0700 | [diff] [blame] | 1047 | |
Tom Cherry | 3b81f2d | 2017-07-28 14:48:41 -0700 | [diff] [blame] | 1048 | unsigned flags = SVC_ONESHOT | SVC_TEMPORARY; |
Jorge Lucangeli Obes | 24b2913 | 2016-10-27 10:33:03 -0400 | [diff] [blame] | 1049 | CapSet no_capabilities; |
Jorge Lucangeli Obes | 1b3fa3d | 2016-04-21 15:35:09 -0700 | [diff] [blame] | 1050 | unsigned namespace_flags = 0; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 1051 | |
| 1052 | std::string seclabel = ""; |
| 1053 | if (command_arg > 2 && args[1] != "-") { |
| 1054 | seclabel = args[1]; |
| 1055 | } |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 1056 | Result<uid_t> uid = 0; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 1057 | if (command_arg > 3) { |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 1058 | uid = DecodeUid(args[2]); |
| 1059 | if (!uid) { |
| 1060 | LOG(ERROR) << "Unable to decode UID for '" << args[2] << "': " << uid.error(); |
Tom Cherry | 517e1f1 | 2017-05-04 17:40:33 -0700 | [diff] [blame] | 1061 | return nullptr; |
| 1062 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 1063 | } |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 1064 | Result<gid_t> gid = 0; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 1065 | std::vector<gid_t> supp_gids; |
| 1066 | if (command_arg > 4) { |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 1067 | gid = DecodeUid(args[3]); |
| 1068 | if (!gid) { |
| 1069 | LOG(ERROR) << "Unable to decode GID for '" << args[3] << "': " << gid.error(); |
Tom Cherry | 517e1f1 | 2017-05-04 17:40:33 -0700 | [diff] [blame] | 1070 | return nullptr; |
| 1071 | } |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 1072 | std::size_t nr_supp_gids = command_arg - 1 /* -- */ - 4 /* exec SECLABEL UID GID */; |
| 1073 | for (size_t i = 0; i < nr_supp_gids; ++i) { |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 1074 | auto supp_gid = DecodeUid(args[4 + i]); |
| 1075 | if (!supp_gid) { |
| 1076 | LOG(ERROR) << "Unable to decode GID for '" << args[4 + i] |
| 1077 | << "': " << supp_gid.error(); |
Tom Cherry | 517e1f1 | 2017-05-04 17:40:33 -0700 | [diff] [blame] | 1078 | return nullptr; |
| 1079 | } |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 1080 | supp_gids.push_back(*supp_gid); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 1081 | } |
| 1082 | } |
| 1083 | |
Tom Cherry | 11a3aee | 2017-08-03 12:54:07 -0700 | [diff] [blame] | 1084 | return std::make_unique<Service>(name, flags, *uid, *gid, supp_gids, no_capabilities, |
Tom Cherry | cb0f9bb | 2017-09-12 15:58:47 -0700 | [diff] [blame] | 1085 | namespace_flags, seclabel, nullptr, str_args); |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 1086 | } |
| 1087 | |
Tom Cherry | 5938379 | 2017-07-26 16:09:09 -0700 | [diff] [blame] | 1088 | // Shutdown services in the opposite order that they were started. |
Tom Cherry | 911b9b1 | 2017-07-27 16:20:58 -0700 | [diff] [blame] | 1089 | const std::vector<Service*> ServiceList::services_in_shutdown_order() const { |
Tom Cherry | 5938379 | 2017-07-26 16:09:09 -0700 | [diff] [blame] | 1090 | std::vector<Service*> shutdown_services; |
| 1091 | for (const auto& service : services_) { |
| 1092 | if (service->start_order() > 0) shutdown_services.emplace_back(service.get()); |
| 1093 | } |
| 1094 | std::sort(shutdown_services.begin(), shutdown_services.end(), |
| 1095 | [](const auto& a, const auto& b) { return a->start_order() > b->start_order(); }); |
Tom Cherry | 911b9b1 | 2017-07-27 16:20:58 -0700 | [diff] [blame] | 1096 | return shutdown_services; |
Tom Cherry | 5938379 | 2017-07-26 16:09:09 -0700 | [diff] [blame] | 1097 | } |
| 1098 | |
Tom Cherry | 911b9b1 | 2017-07-27 16:20:58 -0700 | [diff] [blame] | 1099 | void ServiceList::RemoveService(const Service& svc) { |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 1100 | auto svc_it = std::find_if(services_.begin(), services_.end(), |
| 1101 | [&svc] (const std::unique_ptr<Service>& s) { |
| 1102 | return svc.name() == s->name(); |
| 1103 | }); |
| 1104 | if (svc_it == services_.end()) { |
| 1105 | return; |
| 1106 | } |
| 1107 | |
| 1108 | services_.erase(svc_it); |
| 1109 | } |
| 1110 | |
Tom Cherry | 911b9b1 | 2017-07-27 16:20:58 -0700 | [diff] [blame] | 1111 | void ServiceList::DumpState() const { |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 1112 | for (const auto& s : services_) { |
| 1113 | s->DumpState(); |
| 1114 | } |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 1115 | } |
| 1116 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 1117 | Result<Success> ServiceParser::ParseSection(std::vector<std::string>&& args, |
| 1118 | const std::string& filename, int line) { |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 1119 | if (args.size() < 3) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 1120 | return Error() << "services must have a name and a program"; |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 1121 | } |
| 1122 | |
| 1123 | const std::string& name = args[1]; |
| 1124 | if (!IsValidName(name)) { |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 1125 | return Error() << "invalid service name '" << name << "'"; |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 1126 | } |
| 1127 | |
Tom Cherry | cb0f9bb | 2017-09-12 15:58:47 -0700 | [diff] [blame] | 1128 | Subcontext* restart_action_subcontext = nullptr; |
| 1129 | if (subcontexts_) { |
| 1130 | for (auto& subcontext : *subcontexts_) { |
Elliott Hughes | 579e682 | 2017-12-20 09:41:00 -0800 | [diff] [blame] | 1131 | if (StartsWith(filename, subcontext.path_prefix())) { |
Tom Cherry | cb0f9bb | 2017-09-12 15:58:47 -0700 | [diff] [blame] | 1132 | restart_action_subcontext = &subcontext; |
| 1133 | break; |
| 1134 | } |
| 1135 | } |
| 1136 | } |
| 1137 | |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 1138 | std::vector<std::string> str_args(args.begin() + 2, args.end()); |
Tom Cherry | cb0f9bb | 2017-09-12 15:58:47 -0700 | [diff] [blame] | 1139 | service_ = std::make_unique<Service>(name, restart_action_subcontext, str_args); |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 1140 | return Success(); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 1141 | } |
| 1142 | |
Tom Cherry | 89bcc85 | 2017-08-02 17:01:36 -0700 | [diff] [blame] | 1143 | Result<Success> ServiceParser::ParseLineSection(std::vector<std::string>&& args, int line) { |
| 1144 | return service_ ? service_->ParseLine(std::move(args)) : Success(); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 1145 | } |
| 1146 | |
Steven Moreland | 7d0a5c3 | 2017-11-10 14:20:47 -0800 | [diff] [blame] | 1147 | Result<Success> ServiceParser::EndSection() { |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 1148 | if (service_) { |
Steven Moreland | 5e1bea3 | 2017-11-10 14:43:58 -0800 | [diff] [blame] | 1149 | Service* old_service = service_list_->FindService(service_->name()); |
| 1150 | if (old_service) { |
Steven Moreland | 6f5333a | 2017-11-13 15:31:54 -0800 | [diff] [blame] | 1151 | if (!service_->is_override()) { |
| 1152 | return Error() << "ignored duplicate definition of service '" << service_->name() |
| 1153 | << "'"; |
| 1154 | } |
| 1155 | |
| 1156 | service_list_->RemoveService(*old_service); |
| 1157 | old_service = nullptr; |
Steven Moreland | 5e1bea3 | 2017-11-10 14:43:58 -0800 | [diff] [blame] | 1158 | } |
| 1159 | |
Tom Cherry | 911b9b1 | 2017-07-27 16:20:58 -0700 | [diff] [blame] | 1160 | service_list_->AddService(std::move(service_)); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 1161 | } |
Steven Moreland | 7d0a5c3 | 2017-11-10 14:20:47 -0800 | [diff] [blame] | 1162 | |
| 1163 | return Success(); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 1164 | } |
| 1165 | |
| 1166 | bool ServiceParser::IsValidName(const std::string& name) const { |
Elliott Hughes | b7788fd | 2017-02-28 09:54:36 -0800 | [diff] [blame] | 1167 | // Property names can be any length, but may only contain certain characters. |
| 1168 | // Property values can contain any characters, but may only be a certain length. |
| 1169 | // (The latter restriction is needed because `start` and `stop` work by writing |
| 1170 | // the service name to the "ctl.start" and "ctl.stop" properties.) |
| 1171 | return is_legal_property_name("init.svc." + name) && name.size() <= PROP_VALUE_MAX; |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 1172 | } |
Tom Cherry | 81f5d3e | 2017-06-22 12:53:17 -0700 | [diff] [blame] | 1173 | |
| 1174 | } // namespace init |
| 1175 | } // namespace android |