ceph/src/common/ceph_context.cc

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 /*
   4  * Ceph - scalable distributed file system
   5  *
   6  * Copyright (C) 2011 New Dream Network
   7  * Copyright (C) 2017 OVH
   8  *
   9  * This is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License version 2.1, as published by the Free Software
  12  * Foundation.  See file COPYING.
  13  *
  14  */
  15
  16 #include "common/ceph_context.h"
  17
  18 #include <mutex>
  19 #include <iostream>
  20
  21 #include <pthread.h>
  22
  23 #include <boost/algorithm/string.hpp>
  24
  25 #include "include/common_fwd.h"
  26 #include "include/mempool.h"
  27 #include "include/stringify.h"
  28 #include "common/admin_socket.h"
  29 #include "common/code_environment.h"
  30 #include "common/ceph_mutex.h"
  31 #include "common/debug.h"
  32 #include "common/config.h"
  33 #include "common/ceph_crypto.h"
  34 #include "common/hostname.h"
  35 #include "common/HeartbeatMap.h"
  36 #include "common/errno.h"
  37 #include "common/Graylog.h"
  38 #ifdef CEPH_DEBUG_MUTEX
  39 #include "common/lockdep.h"
  40 #endif
  41
  42 #include "log/Log.h"
  43
  44 #include "auth/Crypto.h"
  45 #include "include/str_list.h"
  46 #include "common/config.h"
  47 #include "common/config_obs.h"
  48 #include "common/PluginRegistry.h"
  49 #include "common/valgrind.h"
  50 #include "include/spinlock.h"
  51 #if !(defined(WITH_SEASTAR) && !defined(WITH_ALIEN))
  52 #include "mon/MonMap.h"
  53 #endif
  54
  55 // for CINIT_FLAGS
  56 #include "common/common_init.h"
  57
  58 #include <iostream>
  59 #include <pthread.h>
  60
  61 using namespace std::literals;
  62
  63 using ceph::bufferlist;
  64 using ceph::HeartbeatMap;
  65
  66
  67 #if defined(WITH_SEASTAR) && !defined(WITH_ALIEN)
  68 namespace crimson::common {
  69 CephContext::CephContext()
  70   : _conf{crimson::common::local_conf()},
  71     _perf_counters_collection{crimson::common::local_perf_coll()},
  72     _crypto_random{std::make_unique<CryptoRandom>()}
  73 {}
  74
  75 // define the dtor in .cc as CryptoRandom is an incomplete type in the header
  76 CephContext::~CephContext()
  77 {}
  78
  79 uint32_t CephContext::get_module_type() const
  80 {
  81   return CEPH_ENTITY_TYPE_OSD;
  82 }
  83
  84 CryptoRandom* CephContext::random() const
  85 {
  86   return _crypto_random.get();
  87 }
  88
  89 CephContext* CephContext::get()
  90 {
  91   ++nref;
  92   return this;
  93 }
  94
  95 void CephContext::put()
  96 {
  97   if (--nref == 0) {
  98     delete this;
  99   }
 100 }
 101
 102 PerfCountersCollectionImpl* CephContext::get_perfcounters_collection()
 103 {
 104   return _perf_counters_collection.get_perf_collection();
 105 }
 106
 107 }
 108 #else  // WITH_SEASTAR
 109 namespace {
 110
 111 #ifdef CEPH_DEBUG_MUTEX
 112 class LockdepObs : public md_config_obs_t {
 113 public:
 114   explicit LockdepObs(CephContext *cct)
 115     : m_cct(cct), m_registered(false), lock(ceph::make_mutex("lock_dep_obs")) {
 116   }
 117   ~LockdepObs() override {
 118     if (m_registered) {
 119       lockdep_unregister_ceph_context(m_cct);
 120     }
 121   }
 122
 123   const char** get_tracked_conf_keys() const override {
 124     static const char *KEYS[] = {"lockdep", NULL};
 125     return KEYS;
 126   }
 127
 128   void handle_conf_change(const ConfigProxy& conf,
 129                           const std::set <std::string> &changed) override {
 130     std::unique_lock locker(lock);
 131     if (conf->lockdep && !m_registered) {
 132       lockdep_register_ceph_context(m_cct);
 133       m_registered = true;
 134     } else if (!conf->lockdep && m_registered) {
 135       lockdep_unregister_ceph_context(m_cct);
 136       m_registered = false;
 137     }
 138   }
 139 private:
 140   CephContext *m_cct;
 141   bool m_registered;
 142   ceph::mutex lock;
 143 };
 144 #endif // CEPH_DEBUG_MUTEX
 145
 146 class MempoolObs : public md_config_obs_t,
 147                   public AdminSocketHook {
 148   CephContext *cct;
 149   ceph::mutex lock;
 150
 151 public:
 152   explicit MempoolObs(CephContext *cct)
 153     : cct(cct), lock(ceph::make_mutex("mem_pool_obs")) {
 154     cct->_conf.add_observer(this);
 155     int r = cct->get_admin_socket()->register_command(
 156       "dump_mempools",
 157       this,
 158       "get mempool stats");
 159     ceph_assert(r == 0);
 160   }
 161   ~MempoolObs() override {
 162     cct->_conf.remove_observer(this);
 163     cct->get_admin_socket()->unregister_commands(this);
 164   }
 165
 166   // md_config_obs_t
 167   const char** get_tracked_conf_keys() const override {
 168     static const char *KEYS[] = {
 169       "mempool_debug",
 170       NULL
 171     };
 172     return KEYS;
 173   }
 174
 175   void handle_conf_change(const ConfigProxy& conf,
 176                           const std::set <std::string> &changed) override {
 177     std::unique_lock locker(lock);
 178     if (changed.count("mempool_debug")) {
 179       mempool::set_debug_mode(cct->_conf->mempool_debug);
 180     }
 181   }
 182
 183   // AdminSocketHook
 184   int call(std::string_view command, const cmdmap_t& cmdmap,
 185            const bufferlist& inbl,
 186            ceph::Formatter *f,
 187            std::ostream& errss,
 188            bufferlist& out) override {
 189     if (command == "dump_mempools") {
 190       f->open_object_section("mempools");
 191       mempool::dump(f);
 192       f->close_section();
 193       return 0;
 194     }
 195     return -ENOSYS;
 196   }
 197 };
 198
 199 } // anonymous namespace
 200
 201 namespace ceph::common {
 202 class CephContextServiceThread : public Thread
 203 {
 204 public:
 205   explicit CephContextServiceThread(CephContext *cct)
 206     : _reopen_logs(false), _exit_thread(false), _cct(cct)
 207   {
 208   }
 209
 210   ~CephContextServiceThread() override {}
 211
 212   void *entry() override
 213   {
 214     while (1) {
 215       std::unique_lock l(_lock);
 216       if (_exit_thread) {
 217         break;
 218       }
 219
 220       if (_cct->_conf->heartbeat_interval) {
 221         auto interval = ceph::make_timespan(_cct->_conf->heartbeat_interval);
 222         _cond.wait_for(l, interval);
 223       } else
 224         _cond.wait(l);
 225
 226       if (_exit_thread) {
 227         break;
 228       }
 229
 230       if (_reopen_logs) {
 231         _cct->_log->reopen_log_file();
 232         _reopen_logs = false;
 233       }
 234       _cct->_heartbeat_map->check_touch_file();
 235
 236       // refresh the perf coutners
 237       _cct->_refresh_perf_values();
 238     }
 239     return NULL;
 240   }
 241
 242   void reopen_logs()
 243   {
 244     std::lock_guard l(_lock);
 245     _reopen_logs = true;
 246     _cond.notify_all();
 247   }
 248
 249   void exit_thread()
 250   {
 251     std::lock_guard l(_lock);
 252     _exit_thread = true;
 253     _cond.notify_all();
 254   }
 255
 256 private:
 257   ceph::mutex _lock = ceph::make_mutex("CephContextServiceThread::_lock");
 258   ceph::condition_variable _cond;
 259   bool _reopen_logs;
 260   bool _exit_thread;
 261   CephContext *_cct;
 262 };
 263 }
 264
 265 /**
 266  * observe logging config changes
 267  *
 268  * The logging subsystem sits below most of the ceph code, including
 269  * the config subsystem, to keep it simple and self-contained.  Feed
 270  * logging-related config changes to the log.
 271  */
 272 class LogObs : public md_config_obs_t {
 273   ceph::logging::Log *log;
 274   ceph::mutex lock;
 275
 276 public:
 277   explicit LogObs(ceph::logging::Log *l)
 278     : log(l), lock(ceph::make_mutex("log_obs")) {
 279   }
 280
 281   const char** get_tracked_conf_keys() const override {
 282     static const char *KEYS[] = {
 283       "log_file",
 284       "log_max_new",
 285       "log_max_recent",
 286       "log_to_file",
 287       "log_to_syslog",
 288       "err_to_syslog",
 289       "log_stderr_prefix",
 290       "log_to_stderr",
 291       "err_to_stderr",
 292       "log_to_graylog",
 293       "err_to_graylog",
 294       "log_graylog_host",
 295       "log_graylog_port",
 296       "log_to_journald",
 297       "err_to_journald",
 298       "log_coarse_timestamps",
 299       "fsid",
 300       "host",
 301       NULL
 302     };
 303     return KEYS;
 304   }
 305
 306   void handle_conf_change(const ConfigProxy& conf,
 307                           const std::set <std::string> &changed) override {
 308     std::unique_lock locker(lock);
 309     // stderr
 310     if (changed.count("log_to_stderr") || changed.count("err_to_stderr")) {
 311       int l = conf->log_to_stderr ? 99 : (conf->err_to_stderr ? -1 : -2);
 312       log->set_stderr_level(l, l);
 313     }
 314
 315     // syslog
 316     if (changed.count("log_to_syslog")) {
 317       int l = conf->log_to_syslog ? 99 : (conf->err_to_syslog ? -1 : -2);
 318       log->set_syslog_level(l, l);
 319     }
 320
 321     // file
 322     if (changed.count("log_file") ||
 323         changed.count("log_to_file")) {
 324       if (conf->log_to_file) {
 325         log->set_log_file(conf->log_file);
 326       } else {
 327         log->set_log_file({});
 328       }
 329       log->reopen_log_file();
 330     }
 331
 332     if (changed.count("log_stderr_prefix")) {
 333       log->set_log_stderr_prefix(conf.get_val<std::string>("log_stderr_prefix"));
 334     }
 335
 336     if (changed.count("log_max_new")) {
 337
 338       log->set_max_new(conf->log_max_new);
 339     }
 340
 341     if (changed.count("log_max_recent")) {
 342       log->set_max_recent(conf->log_max_recent);
 343     }
 344
 345     // graylog
 346     if (changed.count("log_to_graylog") || changed.count("err_to_graylog")) {
 347       int l = conf->log_to_graylog ? 99 : (conf->err_to_graylog ? -1 : -2);
 348       log->set_graylog_level(l, l);
 349
 350       if (conf->log_to_graylog || conf->err_to_graylog) {
 351         log->start_graylog(conf->host, conf.get_val<uuid_d>("fsid"));
 352       } else if (! (conf->log_to_graylog && conf->err_to_graylog)) {
 353         log->stop_graylog();
 354       }
 355     }
 356
 357     if (log->graylog() && (changed.count("log_graylog_host") || changed.count("log_graylog_port"))) {
 358       log->graylog()->set_destination(conf->log_graylog_host, conf->log_graylog_port);
 359     }
 360
 361     // journald
 362     if (changed.count("log_to_journald") || changed.count("err_to_journald")) {
 363       int l = conf.get_val<bool>("log_to_journald") ? 99 : (conf.get_val<bool>("err_to_journald") ? -1 : -2);
 364       log->set_journald_level(l, l);
 365
 366       if (l > -2) {
 367         log->start_journald_logger();
 368       } else {
 369         log->stop_journald_logger();
 370       }
 371     }
 372
 373     if (changed.find("log_coarse_timestamps") != changed.end()) {
 374       log->set_coarse_timestamps(conf.get_val<bool>("log_coarse_timestamps"));
 375     }
 376
 377     // metadata
 378     if (log->graylog() && changed.count("host")) {
 379       log->graylog()->set_hostname(conf->host);
 380     }
 381
 382     if (log->graylog() && changed.count("fsid")) {
 383       log->graylog()->set_fsid(conf.get_val<uuid_d>("fsid"));
 384     }
 385   }
 386 };
 387
 388
 389 namespace ceph::common {
 390 // cct config watcher
 391 class CephContextObs : public md_config_obs_t {
 392   CephContext *cct;
 393
 394 public:
 395   explicit CephContextObs(CephContext *cct) : cct(cct) {}
 396
 397   const char** get_tracked_conf_keys() const override {
 398     static const char *KEYS[] = {
 399       "enable_experimental_unrecoverable_data_corrupting_features",
 400       "crush_location",
 401       "container_image",  // just so we don't hear complaints about it!
 402       NULL
 403     };
 404     return KEYS;
 405   }
 406
 407   void handle_conf_change(const ConfigProxy& conf,
 408                           const std::set <std::string> &changed) override {
 409     if (changed.count(
 410           "enable_experimental_unrecoverable_data_corrupting_features")) {
 411       std::lock_guard lg(cct->_feature_lock);
 412
 413       cct->_experimental_features.clear();
 414       auto add_experimental_feature = [this] (auto feature) {
 415         cct->_experimental_features.emplace(std::string{feature});
 416       };
 417       for_each_substr(conf->enable_experimental_unrecoverable_data_corrupting_features,
 418           ";,= \t", add_experimental_feature);
 419
 420       if (getenv("CEPH_DEV") == NULL) {
 421         if (!cct->_experimental_features.empty()) {
 422           if (cct->_experimental_features.count("*")) {
 423             lderr(cct) << "WARNING: all dangerous and experimental features are enabled." << dendl;
 424           } else {
 425             lderr(cct) << "WARNING: the following dangerous and experimental features are enabled: "
 426               << cct->_experimental_features << dendl;
 427           }
 428         }
 429       }
 430
 431     }
 432     if (changed.count("crush_location")) {
 433       cct->crush_location.update_from_conf();
 434     }
 435   }
 436 };
 437 // perfcounter hooks
 438
 439 class CephContextHook : public AdminSocketHook {
 440   CephContext *m_cct;
 441
 442 public:
 443   explicit CephContextHook(CephContext *cct) : m_cct(cct) {}
 444
 445   int call(std::string_view command, const cmdmap_t& cmdmap,
 446            const bufferlist& inbl,
 447            Formatter *f,
 448            std::ostream& errss,
 449            bufferlist& out) override {
 450     try {
 451       return m_cct->do_command(command, cmdmap, f, errss, &out);
 452     } catch (const bad_cmd_get& e) {
 453       return -EINVAL;
 454     }
 455   }
 456 };
 457
 458
 459 bool CephContext::check_experimental_feature_enabled(const std::string& feat)
 460 {
 461   std::stringstream message;
 462   bool enabled = check_experimental_feature_enabled(feat, &message);
 463   lderr(this) << message.str() << dendl;
 464   return enabled;
 465 }
 466
 467 bool CephContext::check_experimental_feature_enabled(const std::string& feat,
 468                                                      std::ostream *message)
 469 {
 470   std::unique_lock<ceph::spinlock> lg(_feature_lock);
 471
 472   bool enabled = (_experimental_features.count(feat) ||
 473                   _experimental_features.count("*"));
 474
 475   if (enabled) {
 476     (*message) << "WARNING: experimental feature '" << feat << "' is enabled\n";
 477     (*message) << "Please be aware that this feature is experimental, untested,\n";
 478     (*message) << "unsupported, and may result in data corruption, data loss,\n";
 479     (*message) << "and/or irreparable damage to your cluster.  Do not use\n";
 480     (*message) << "feature with important data.\n";
 481   } else {
 482     (*message) << "*** experimental feature '" << feat << "' is not enabled ***\n";
 483     (*message) << "This feature is marked as experimental, which means it\n";
 484     (*message) << " - is untested\n";
 485     (*message) << " - is unsupported\n";
 486     (*message) << " - may corrupt your data\n";
 487     (*message) << " - may break your cluster is an unrecoverable fashion\n";
 488     (*message) << "To enable this feature, add this to your ceph.conf:\n";
 489     (*message) << "  enable experimental unrecoverable data corrupting features = " << feat << "\n";
 490   }
 491   return enabled;
 492 }
 493
 494 int CephContext::do_command(std::string_view command, const cmdmap_t& cmdmap,
 495                             Formatter *f,
 496                             std::ostream& ss,
 497                             bufferlist *out)
 498 {
 499   try {
 500     return _do_command(command, cmdmap, f, ss, out);
 501   } catch (const bad_cmd_get& e) {
 502     ss << e.what();
 503     return -EINVAL;
 504   }
 505 }
 506
 507 #pragma GCC push_options
 508 #pragma GCC optimize ("O0")
 509 static void leak_some_memory() {
 510   volatile char *foo = new char[1234];
 511   (void)foo;
 512 }
 513 #pragma GCC pop_options
 514
 515 int CephContext::_do_command(
 516   std::string_view command, const cmdmap_t& cmdmap,
 517   Formatter *f,
 518   std::ostream& ss,
 519   bufferlist *out)
 520 {
 521   int r = 0;
 522   lgeneric_dout(this, 1) << "do_command '" << command << "' '" << cmdmap << "'"
 523                          << dendl;
 524   ceph_assert_always(!(command == "assert" && _conf->debug_asok_assert_abort));
 525   if (command == "abort") {
 526     if (_conf->debug_asok_assert_abort) {
 527       ceph_abort();
 528     } else {
 529       return -EPERM;
 530     }
 531   }
 532   if (command == "leak_some_memory") {
 533     leak_some_memory();
 534   }
 535   else if (command == "perfcounters_dump" || command == "1" ||
 536       command == "perf dump") {
 537     std::string logger;
 538     std::string counter;
 539     cmd_getval(cmdmap, "logger", logger);
 540     cmd_getval(cmdmap, "counter", counter);
 541     _perf_counters_collection->dump_formatted(f, false, logger, counter);
 542   }
 543   else if (command == "perfcounters_schema" || command == "2" ||
 544     command == "perf schema") {
 545     _perf_counters_collection->dump_formatted(f, true);
 546   }
 547   else if (command == "perf histogram dump") {
 548     std::string logger;
 549     std::string counter;
 550     cmd_getval(cmdmap, "logger", logger);
 551     cmd_getval(cmdmap, "counter", counter);
 552     _perf_counters_collection->dump_formatted_histograms(f, false, logger,
 553                                                          counter);
 554   }
 555   else if (command == "perf histogram schema") {
 556     _perf_counters_collection->dump_formatted_histograms(f, true);
 557   }
 558   else if (command == "perf reset") {
 559     std::string var;
 560     std::string section(command);
 561     f->open_object_section(section.c_str());
 562     if (!cmd_getval(cmdmap, "var", var)) {
 563       f->dump_string("error", "syntax error: 'perf reset <var>'");
 564     } else {
 565      if(!_perf_counters_collection->reset(var))
 566         f->dump_stream("error") << "Not find: " << var;
 567      else
 568        f->dump_string("success", std::string(command) + ' ' + var);
 569     }
 570     f->close_section();
 571   }
 572   else {
 573     std::string section(command);
 574     boost::replace_all(section, " ", "_");
 575     f->open_object_section(section.c_str());
 576     if (command == "config show") {
 577       _conf.show_config(f);
 578     }
 579     else if (command == "config unset") {
 580       std::string var;
 581       if (!(cmd_getval(cmdmap, "var", var))) {
 582         r = -EINVAL;
 583       } else {
 584         r = _conf.rm_val(var.c_str());
 585         if (r < 0 && r != -ENOENT) {
 586           ss << "error unsetting '" << var << "': "
 587              << cpp_strerror(r);
 588         } else {
 589           _conf.apply_changes(&ss);
 590           r = 0;
 591         }
 592       }
 593
 594     }
 595     else if (command == "config set") {
 596       std::string var;
 597       std::vector<std::string> val;
 598
 599       if (!(cmd_getval(cmdmap, "var", var)) ||
 600           !(cmd_getval(cmdmap, "val", val))) {
 601         r = -EINVAL;
 602       } else {
 603         // val may be multiple words
 604         auto valstr = str_join(val, " ");
 605         r = _conf.set_val(var.c_str(), valstr.c_str());
 606         if (r < 0) {
 607           ss << "error setting '" << var << "' to '" << valstr << "': "
 608              << cpp_strerror(r);
 609         } else {
 610           std::stringstream ss;
 611           _conf.apply_changes(&ss);
 612           f->dump_string("success", ss.str());
 613         }
 614       }
 615     } else if (command == "config get") {
 616       std::string var;
 617       if (!cmd_getval(cmdmap, "var", var)) {
 618         r = -EINVAL;
 619       } else {
 620         char buf[4096];
 621         // FIPS zeroization audit 20191115: this memset is not security related.
 622         memset(buf, 0, sizeof(buf));
 623         char *tmp = buf;
 624         r = _conf.get_val(var.c_str(), &tmp, sizeof(buf));
 625         if (r < 0) {
 626           ss << "error getting '" << var << "': " << cpp_strerror(r);
 627         } else {
 628           f->dump_string(var.c_str(), buf);
 629         }
 630       }
 631     } else if (command == "config help") {
 632       std::string var;
 633       if (cmd_getval(cmdmap, "var", var)) {
 634         // Output a single one
 635         std::string key = ConfFile::normalize_key_name(var);
 636         auto schema = _conf.get_schema(key);
 637         if (!schema) {
 638           ss << "Setting not found: '" << key << "'";
 639           r = -ENOENT;
 640         } else {
 641           f->dump_object("option", *schema);
 642         }
 643       } else {
 644         // Output all
 645         f->open_array_section("options");
 646         for (const auto &option : ceph_options) {
 647           f->dump_object("option", option);
 648         }
 649         f->close_section();
 650       }
 651     } else if (command == "config diff") {
 652       f->open_object_section("diff");
 653       _conf.diff(f);
 654       f->close_section(); // unknown
 655     } else if (command == "config diff get") {
 656       std::string setting;
 657       f->open_object_section("diff");
 658       _conf.diff(f, setting);
 659       f->close_section(); // unknown
 660     }
 661     else if (command == "injectargs") {
 662       std::vector<std::string> argsvec;
 663       cmd_getval(cmdmap, "injected_args", argsvec);
 664       if (!argsvec.empty()) {
 665         auto args = joinify<std::string>(argsvec.begin(), argsvec.end(), " ");
 666         r = _conf.injectargs(args, &ss);
 667       }
 668     }
 669     else if (command == "log flush") {
 670       _log->flush();
 671     }
 672     else if (command == "log dump") {
 673       _log->dump_recent();
 674     }
 675     else if (command == "log reopen") {
 676       _log->reopen_log_file();
 677     }
 678     else {
 679       ceph_abort_msg("registered under wrong command?");
 680     }
 681     f->close_section();
 682   }
 683   lgeneric_dout(this, 1) << "do_command '" << command << "' '" << cmdmap
 684                          << "' result is " << out->length() << " bytes" << dendl;
 685   return r;
 686 }
 687
 688 CephContext::CephContext(uint32_t module_type_,
 689                          enum code_environment_t code_env,
 690                          int init_flags_)
 691   : nref(1),
 692     _conf{code_env == CODE_ENVIRONMENT_DAEMON},
 693     _log(NULL),
 694     _module_type(module_type_),
 695     _init_flags(init_flags_),
 696     _set_uid(0),
 697     _set_gid(0),
 698     _set_uid_string(),
 699     _set_gid_string(),
 700     _crypto_inited(0),
 701     _service_thread(NULL),
 702     _log_obs(NULL),
 703     _admin_socket(NULL),
 704     _perf_counters_collection(NULL),
 705     _perf_counters_conf_obs(NULL),
 706     _heartbeat_map(NULL),
 707     _crypto_none(NULL),
 708     _crypto_aes(NULL),
 709     _plugin_registry(NULL),
 710 #ifdef CEPH_DEBUG_MUTEX
 711     _lockdep_obs(NULL),
 712 #endif
 713     crush_location(this)
 714 {
 715   _log = new ceph::logging::Log(&_conf->subsys);
 716
 717   _log_obs = new LogObs(_log);
 718   _conf.add_observer(_log_obs);
 719
 720   _cct_obs = new CephContextObs(this);
 721   _conf.add_observer(_cct_obs);
 722 #ifdef CEPH_DEBUG_MUTEX
 723   _lockdep_obs = new LockdepObs(this);
 724   _conf.add_observer(_lockdep_obs);
 725 #endif
 726   _perf_counters_collection = new PerfCountersCollection(this);
 727
 728   _admin_socket = new AdminSocket(this);
 729   _heartbeat_map = new HeartbeatMap(this);
 730
 731   _plugin_registry = new PluginRegistry(this);
 732
 733   _admin_hook = new CephContextHook(this);
 734   _admin_socket->register_command("assert", _admin_hook, "");
 735   _admin_socket->register_command("abort", _admin_hook, "");
 736   _admin_socket->register_command("leak_some_memory", _admin_hook, "");
 737   _admin_socket->register_command("perfcounters_dump", _admin_hook, "");
 738   _admin_socket->register_command("1", _admin_hook, "");
 739   _admin_socket->register_command("perf dump name=logger,type=CephString,req=false name=counter,type=CephString,req=false", _admin_hook, "dump perfcounters value");
 740   _admin_socket->register_command("perfcounters_schema", _admin_hook, "");
 741   _admin_socket->register_command("perf histogram dump name=logger,type=CephString,req=false name=counter,type=CephString,req=false", _admin_hook, "dump perf histogram values");
 742   _admin_socket->register_command("2", _admin_hook, "");
 743   _admin_socket->register_command("perf schema", _admin_hook, "dump perfcounters schema");
 744   _admin_socket->register_command("perf histogram schema", _admin_hook, "dump perf histogram schema");
 745   _admin_socket->register_command("perf reset name=var,type=CephString", _admin_hook, "perf reset <name>: perf reset all or one perfcounter name");
 746   _admin_socket->register_command("config show", _admin_hook, "dump current config settings");
 747   _admin_socket->register_command("config help name=var,type=CephString,req=false", _admin_hook, "get config setting schema and descriptions");
 748   _admin_socket->register_command("config set name=var,type=CephString name=val,type=CephString,n=N",  _admin_hook, "config set <field> <val> [<val> ...]: set a config variable");
 749   _admin_socket->register_command("config unset name=var,type=CephString",  _admin_hook, "config unset <field>: unset a config variable");
 750   _admin_socket->register_command("config get name=var,type=CephString", _admin_hook, "config get <field>: get the config value");
 751   _admin_socket->register_command(
 752       "config diff", _admin_hook,
 753       "dump diff of current config and default config");
 754   _admin_socket->register_command(
 755       "config diff get name=var,type=CephString", _admin_hook,
 756       "dump diff get <field>: dump diff of current and default config setting <field>");
 757   _admin_socket->register_command("injectargs name=injected_args,type=CephString,n=N", _admin_hook, "inject configuration arguments into running daemon"),
 758   _admin_socket->register_command("log flush", _admin_hook, "flush log entries to log file");
 759   _admin_socket->register_command("log dump", _admin_hook, "dump recent log entries to log file");
 760   _admin_socket->register_command("log reopen", _admin_hook, "reopen log file");
 761
 762   _crypto_none = CryptoHandler::create(CEPH_CRYPTO_NONE);
 763   _crypto_aes = CryptoHandler::create(CEPH_CRYPTO_AES);
 764   _crypto_random.reset(new CryptoRandom());
 765
 766   lookup_or_create_singleton_object<MempoolObs>("mempool_obs", false, this);
 767 }
 768
 769 CephContext::~CephContext()
 770 {
 771   associated_objs.clear();
 772   join_service_thread();
 773
 774   if (_cct_perf) {
 775     _perf_counters_collection->remove(_cct_perf);
 776     delete _cct_perf;
 777     _cct_perf = NULL;
 778   }
 779
 780   delete _plugin_registry;
 781
 782   _admin_socket->unregister_commands(_admin_hook);
 783   delete _admin_hook;
 784   delete _admin_socket;
 785
 786   delete _heartbeat_map;
 787
 788   delete _perf_counters_collection;
 789   _perf_counters_collection = NULL;
 790
 791   delete _perf_counters_conf_obs;
 792   _perf_counters_conf_obs = NULL;
 793
 794   _conf.remove_observer(_log_obs);
 795   delete _log_obs;
 796   _log_obs = NULL;
 797
 798   _conf.remove_observer(_cct_obs);
 799   delete _cct_obs;
 800   _cct_obs = NULL;
 801 #ifdef CEPH_DEBUG_MUTEX
 802   _conf.remove_observer(_lockdep_obs);
 803   delete _lockdep_obs;
 804   _lockdep_obs = NULL;
 805 #endif
 806   _log->stop();
 807   delete _log;
 808   _log = NULL;
 809
 810   delete _crypto_none;
 811   delete _crypto_aes;
 812   if (_crypto_inited > 0) {
 813     ceph_assert(_crypto_inited == 1);  // or else someone explicitly did
 814                                   // init but not shutdown
 815     shutdown_crypto();
 816   }
 817 }
 818
 819 void CephContext::put() {
 820   if (--nref == 0) {
 821     ANNOTATE_HAPPENS_AFTER(&nref);
 822     ANNOTATE_HAPPENS_BEFORE_FORGET_ALL(&nref);
 823     if (g_ceph_context == this)
 824       g_ceph_context = nullptr;
 825     delete this;
 826   } else {
 827     ANNOTATE_HAPPENS_BEFORE(&nref);
 828   }
 829 }
 830
 831 void CephContext::init_crypto()
 832 {
 833   if (_crypto_inited++ == 0) {
 834     TOPNSPC::crypto::init();
 835   }
 836 }
 837
 838 void CephContext::shutdown_crypto()
 839 {
 840   if (--_crypto_inited == 0) {
 841     TOPNSPC::crypto::shutdown(g_code_env == CODE_ENVIRONMENT_LIBRARY);
 842   }
 843 }
 844
 845 void CephContext::start_service_thread()
 846 {
 847   {
 848     std::lock_guard lg(_service_thread_lock);
 849     if (_service_thread) {
 850       return;
 851     }
 852     _service_thread = new CephContextServiceThread(this);
 853     _service_thread->create("service");
 854   }
 855
 856   if (!(get_init_flags() & CINIT_FLAG_NO_CCT_PERF_COUNTERS))
 857     _enable_perf_counter();
 858
 859   // make logs flush on_exit()
 860   if (_conf->log_flush_on_exit)
 861     _log->set_flush_on_exit();
 862
 863   // Trigger callbacks on any config observers that were waiting for
 864   // it to become safe to start threads.
 865   _conf.set_safe_to_start_threads();
 866   _conf.call_all_observers();
 867
 868   // start admin socket
 869   if (_conf->admin_socket.length())
 870     _admin_socket->init(_conf->admin_socket);
 871 }
 872
 873 void CephContext::reopen_logs()
 874 {
 875   std::lock_guard lg(_service_thread_lock);
 876   if (_service_thread)
 877     _service_thread->reopen_logs();
 878 }
 879
 880 void CephContext::join_service_thread()
 881 {
 882   std::unique_lock<ceph::spinlock> lg(_service_thread_lock);
 883
 884   CephContextServiceThread *thread = _service_thread;
 885   if (!thread) {
 886     return;
 887   }
 888   _service_thread = NULL;
 889
 890   lg.unlock();
 891
 892   thread->exit_thread();
 893   thread->join();
 894   delete thread;
 895
 896   if (!(get_init_flags() & CINIT_FLAG_NO_CCT_PERF_COUNTERS))
 897     _disable_perf_counter();
 898 }
 899
 900 uint32_t CephContext::get_module_type() const
 901 {
 902   return _module_type;
 903 }
 904
 905 void CephContext::set_init_flags(int flags)
 906 {
 907   _init_flags = flags;
 908 }
 909
 910 int CephContext::get_init_flags() const
 911 {
 912   return _init_flags;
 913 }
 914
 915 PerfCountersCollection *CephContext::get_perfcounters_collection()
 916 {
 917   return _perf_counters_collection;
 918 }
 919
 920 void CephContext::_enable_perf_counter()
 921 {
 922   assert(!_cct_perf);
 923   PerfCountersBuilder plb(this, "cct", l_cct_first, l_cct_last);
 924   plb.add_u64(l_cct_total_workers, "total_workers", "Total workers");
 925   plb.add_u64(l_cct_unhealthy_workers, "unhealthy_workers", "Unhealthy workers");
 926   _cct_perf = plb.create_perf_counters();
 927   _perf_counters_collection->add(_cct_perf);
 928
 929   assert(_mempool_perf_names.empty());
 930   assert(_mempool_perf_descriptions.empty());
 931   _mempool_perf_names.reserve(mempool::num_pools * 2);
 932   _mempool_perf_descriptions.reserve(mempool::num_pools * 2);
 933   for (unsigned i = 0; i < mempool::num_pools; ++i) {
 934     std::string n = mempool::get_pool_name(mempool::pool_index_t(i));
 935     _mempool_perf_names.push_back(n + "_bytes"s);
 936     _mempool_perf_descriptions.push_back(
 937       "mempool "s + n + " total bytes");
 938     _mempool_perf_names.push_back(n + "_items"s);
 939     _mempool_perf_descriptions.push_back(
 940       "mempool "s + n + " total items"s);
 941   }
 942
 943   PerfCountersBuilder plb2(this, "mempool", l_mempool_first,
 944                           l_mempool_first + 1 + 2*mempool::num_pools);
 945   unsigned l = l_mempool_first + 1;
 946   for (unsigned i = 0; i < mempool::num_pools; ++i) {
 947     plb2.add_u64(l++, _mempool_perf_names[i*2].c_str(),
 948                  _mempool_perf_descriptions[i*2].c_str());
 949     plb2.add_u64(l++, _mempool_perf_names[i*2+1].c_str(),
 950                  _mempool_perf_descriptions[i*2+1].c_str());
 951   }
 952   _mempool_perf = plb2.create_perf_counters();
 953   _perf_counters_collection->add(_mempool_perf);
 954 }
 955
 956 void CephContext::_disable_perf_counter()
 957 {
 958   if (!_cct_perf) {
 959     return;
 960   }
 961   _perf_counters_collection->remove(_cct_perf);
 962   delete _cct_perf;
 963   _cct_perf = nullptr;
 964
 965   _perf_counters_collection->remove(_mempool_perf);
 966   delete _mempool_perf;
 967   _mempool_perf = nullptr;
 968   _mempool_perf_names.clear();
 969   _mempool_perf_descriptions.clear();
 970 }
 971
 972 void CephContext::_refresh_perf_values()
 973 {
 974   if (_cct_perf) {
 975     _cct_perf->set(l_cct_total_workers, _heartbeat_map->get_total_workers());
 976     _cct_perf->set(l_cct_unhealthy_workers, _heartbeat_map->get_unhealthy_workers());
 977   }
 978   unsigned l = l_mempool_first + 1;
 979   for (unsigned i = 0; i < mempool::num_pools; ++i) {
 980     mempool::pool_t& p = mempool::get_pool(mempool::pool_index_t(i));
 981     _mempool_perf->set(l++, p.allocated_bytes());
 982     _mempool_perf->set(l++, p.allocated_items());
 983   }
 984 }
 985
 986 AdminSocket *CephContext::get_admin_socket()
 987 {
 988   return _admin_socket;
 989 }
 990
 991 CryptoHandler *CephContext::get_crypto_handler(int type)
 992 {
 993   switch (type) {
 994   case CEPH_CRYPTO_NONE:
 995     return _crypto_none;
 996   case CEPH_CRYPTO_AES:
 997     return _crypto_aes;
 998   default:
 999     return NULL;
1000   }
1001 }
1002
1003 void CephContext::notify_pre_fork()
1004 {
1005   {
1006     std::lock_guard lg(_fork_watchers_lock);
1007     for (auto &&t : _fork_watchers) {
1008       t->handle_pre_fork();
1009     }
1010   }
1011   {
1012     // note: we don't hold a lock here, but we assume we are idle at
1013     // fork time, which happens during process init and startup.
1014     auto i = associated_objs.begin();
1015     while (i != associated_objs.end()) {
1016       if (associated_objs_drop_on_fork.count(i->first.first)) {
1017         i = associated_objs.erase(i);
1018       } else {
1019         ++i;
1020       }
1021     }
1022     associated_objs_drop_on_fork.clear();
1023   }
1024 }
1025
1026 void CephContext::notify_post_fork()
1027 {
1028   ceph::spin_unlock(&_fork_watchers_lock);
1029   for (auto &&t : _fork_watchers)
1030     t->handle_post_fork();
1031 }
1032
1033 void CephContext::set_mon_addrs(const MonMap& mm) {
1034   std::vector<entity_addrvec_t> mon_addrs;
1035   for (auto& i : mm.mon_info) {
1036     mon_addrs.push_back(i.second.public_addrs);
1037   }
1038
1039   set_mon_addrs(mon_addrs);
1040 }
1041 }
1042 #endif  // WITH_SEASTAR