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