Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1012 insertions, 0 deletions

diff --git a/src/common/ceph_context.cc b/src/common/ceph_context.cc
new file mode 100644
index 000000000..25e96b096
--- /dev/null
+++ b/src/common/ceph_context.cc
@@ -0,0 +1,1012 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2011 New Dream Network
+ * Copyright (C) 2017 OVH
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#include "common/ceph_context.h"
+
+#include <mutex>
+#include <iostream>
+
+#include <pthread.h>
+
+#include <boost/algorithm/string.hpp>
+
+#include "include/common_fwd.h"
+#include "include/mempool.h"
+#include "include/stringify.h"
+#include "common/admin_socket.h"
+#include "common/code_environment.h"
+#include "common/ceph_mutex.h"
+#include "common/debug.h"
+#include "common/config.h"
+#include "common/ceph_crypto.h"
+#include "common/lockdep.h"
+#include "common/HeartbeatMap.h"
+#include "common/errno.h"
+#include "common/Graylog.h"
+
+#include "log/Log.h"
+
+#include "auth/Crypto.h"
+#include "include/str_list.h"
+#include "common/config.h"
+#include "common/config_obs.h"
+#include "common/PluginRegistry.h"
+#include "common/valgrind.h"
+#include "include/spinlock.h"
+#if !(defined(WITH_SEASTAR) && !defined(WITH_ALIEN))
+#include "mon/MonMap.h"
+#endif
+
+// for CINIT_FLAGS
+#include "common/common_init.h"
+
+#include <iostream>
+#include <pthread.h>
+
+using namespace std::literals;
+
+using ceph::bufferlist;
+using ceph::HeartbeatMap;
+
+
+#if defined(WITH_SEASTAR) && !defined(WITH_ALIEN)
+namespace crimson::common {
+CephContext::CephContext()
+  : _conf{crimson::common::local_conf()},
+    _perf_counters_collection{crimson::common::local_perf_coll()},
+    _crypto_random{std::make_unique<CryptoRandom>()}
+{}
+
+// define the dtor in .cc as CryptoRandom is an incomplete type in the header
+CephContext::~CephContext()
+{}
+
+uint32_t CephContext::get_module_type() const
+{
+  return CEPH_ENTITY_TYPE_OSD;
+}
+
+CryptoRandom* CephContext::random() const
+{
+  return _crypto_random.get();
+}
+
+CephContext* CephContext::get()
+{
+  ++nref;
+  return this;
+}
+
+void CephContext::put()
+{
+  if (--nref == 0) {
+    delete this;
+  }
+}
+
+PerfCountersCollectionImpl* CephContext::get_perfcounters_collection()
+{
+  return _perf_counters_collection.get_perf_collection();
+}
+
+}
+#else  // WITH_SEASTAR
+namespace {
+
+class LockdepObs : public md_config_obs_t {
+public:
+  explicit LockdepObs(CephContext *cct)
+    : m_cct(cct), m_registered(false), lock(ceph::make_mutex("lock_dep_obs")) {
+  }
+  ~LockdepObs() override {
+    if (m_registered) {
+      lockdep_unregister_ceph_context(m_cct);
+    }
+  }
+
+  const char** get_tracked_conf_keys() const override {
+    static const char *KEYS[] = {"lockdep", NULL};
+    return KEYS;
+  }
+
+  void handle_conf_change(const ConfigProxy& conf,
+                          const std::set <std::string> &changed) override {
+    std::unique_lock locker(lock);
+    if (conf->lockdep && !m_registered) {
+      lockdep_register_ceph_context(m_cct);
+      m_registered = true;
+    } else if (!conf->lockdep && m_registered) {
+      lockdep_unregister_ceph_context(m_cct);
+      m_registered = false;
+    }
+  }
+private:
+  CephContext *m_cct;
+  bool m_registered;
+  ceph::mutex lock;
+};
+
+class MempoolObs : public md_config_obs_t,
+		  public AdminSocketHook {
+  CephContext *cct;
+  ceph::mutex lock;
+
+public:
+  explicit MempoolObs(CephContext *cct)
+    : cct(cct), lock(ceph::make_mutex("mem_pool_obs")) {
+    cct->_conf.add_observer(this);
+    int r = cct->get_admin_socket()->register_command(
+      "dump_mempools",
+      this,
+      "get mempool stats");
+    ceph_assert(r == 0);
+  }
+  ~MempoolObs() override {
+    cct->_conf.remove_observer(this);
+    cct->get_admin_socket()->unregister_commands(this);
+  }
+
+  // md_config_obs_t
+  const char** get_tracked_conf_keys() const override {
+    static const char *KEYS[] = {
+      "mempool_debug",
+      NULL
+    };
+    return KEYS;
+  }
+
+  void handle_conf_change(const ConfigProxy& conf,
+                          const std::set <std::string> &changed) override {
+    std::unique_lock locker(lock);
+    if (changed.count("mempool_debug")) {
+      mempool::set_debug_mode(cct->_conf->mempool_debug);
+    }
+  }
+
+  // AdminSocketHook
+  int call(std::string_view command, const cmdmap_t& cmdmap,
+	   ceph::Formatter *f,
+	   std::ostream& errss,
+	   bufferlist& out) override {
+    if (command == "dump_mempools") {
+      f->open_object_section("mempools");
+      mempool::dump(f);
+      f->close_section();
+      return 0;
+    }
+    return -ENOSYS;
+  }
+};
+
+} // anonymous namespace
+
+namespace ceph::common {
+class CephContextServiceThread : public Thread
+{
+public:
+  explicit CephContextServiceThread(CephContext *cct)
+    : _reopen_logs(false), _exit_thread(false), _cct(cct)
+  {
+  }
+
+  ~CephContextServiceThread() override {}
+
+  void *entry() override
+  {
+    while (1) {
+      std::unique_lock l(_lock);
+      if (_exit_thread) {
+        break;
+      }
+
+      if (_cct->_conf->heartbeat_interval) {
+        auto interval = ceph::make_timespan(_cct->_conf->heartbeat_interval);
+        _cond.wait_for(l, interval);
+      } else
+        _cond.wait(l);
+
+      if (_exit_thread) {
+        break;
+      }
+
+      if (_reopen_logs) {
+        _cct->_log->reopen_log_file();
+        _reopen_logs = false;
+      }
+      _cct->_heartbeat_map->check_touch_file();
+
+      // refresh the perf coutners
+      _cct->_refresh_perf_values();
+    }
+    return NULL;
+  }
+
+  void reopen_logs()
+  {
+    std::lock_guard l(_lock);
+    _reopen_logs = true;
+    _cond.notify_all();
+  }
+
+  void exit_thread()
+  {
+    std::lock_guard l(_lock);
+    _exit_thread = true;
+    _cond.notify_all();
+  }
+
+private:
+  ceph::mutex _lock = ceph::make_mutex("CephContextServiceThread::_lock");
+  ceph::condition_variable _cond;
+  bool _reopen_logs;
+  bool _exit_thread;
+  CephContext *_cct;
+};
+}
+
+/**
+ * observe logging config changes
+ *
+ * The logging subsystem sits below most of the ceph code, including
+ * the config subsystem, to keep it simple and self-contained.  Feed
+ * logging-related config changes to the log.
+ */
+class LogObs : public md_config_obs_t {
+  ceph::logging::Log *log;
+  ceph::mutex lock;
+
+public:
+  explicit LogObs(ceph::logging::Log *l)
+    : log(l), lock(ceph::make_mutex("log_obs")) {
+  }
+
+  const char** get_tracked_conf_keys() const override {
+    static const char *KEYS[] = {
+      "log_file",
+      "log_max_new",
+      "log_max_recent",
+      "log_to_file",
+      "log_to_syslog",
+      "err_to_syslog",
+      "log_stderr_prefix",
+      "log_to_stderr",
+      "err_to_stderr",
+      "log_to_graylog",
+      "err_to_graylog",
+      "log_graylog_host",
+      "log_graylog_port",
+      "log_coarse_timestamps",
+      "fsid",
+      "host",
+      NULL
+    };
+    return KEYS;
+  }
+
+  void handle_conf_change(const ConfigProxy& conf,
+                          const std::set <std::string> &changed) override {
+    std::unique_lock locker(lock);
+    // stderr
+    if (changed.count("log_to_stderr") || changed.count("err_to_stderr")) {
+      int l = conf->log_to_stderr ? 99 : (conf->err_to_stderr ? -1 : -2);
+      log->set_stderr_level(l, l);
+    }
+
+    // syslog
+    if (changed.count("log_to_syslog")) {
+      int l = conf->log_to_syslog ? 99 : (conf->err_to_syslog ? -1 : -2);
+      log->set_syslog_level(l, l);
+    }
+
+    // file
+    if (changed.count("log_file") ||
+	changed.count("log_to_file")) {
+      if (conf->log_to_file) {
+	log->set_log_file(conf->log_file);
+      } else {
+	log->set_log_file({});
+      }
+      log->reopen_log_file();
+    }
+
+    if (changed.count("log_stderr_prefix")) {
+      log->set_log_stderr_prefix(conf.get_val<std::string>("log_stderr_prefix"));
+    }
+
+    if (changed.count("log_max_new")) {
+
+      log->set_max_new(conf->log_max_new);
+    }
+
+    if (changed.count("log_max_recent")) {
+      log->set_max_recent(conf->log_max_recent);
+    }
+
+    // graylog
+    if (changed.count("log_to_graylog") || changed.count("err_to_graylog")) {
+      int l = conf->log_to_graylog ? 99 : (conf->err_to_graylog ? -1 : -2);
+      log->set_graylog_level(l, l);
+
+      if (conf->log_to_graylog || conf->err_to_graylog) {
+	log->start_graylog();
+      } else if (! (conf->log_to_graylog && conf->err_to_graylog)) {
+	log->stop_graylog();
+      }
+    }
+
+    if (log->graylog() && (changed.count("log_graylog_host") || changed.count("log_graylog_port"))) {
+      log->graylog()->set_destination(conf->log_graylog_host, conf->log_graylog_port);
+    }
+
+    if (changed.find("log_coarse_timestamps") != changed.end()) {
+      log->set_coarse_timestamps(conf.get_val<bool>("log_coarse_timestamps"));
+    }
+
+    // metadata
+    if (log->graylog() && changed.count("host")) {
+      log->graylog()->set_hostname(conf->host);
+    }
+
+    if (log->graylog() && changed.count("fsid")) {
+      log->graylog()->set_fsid(conf.get_val<uuid_d>("fsid"));
+    }
+  }
+};
+
+
+namespace ceph::common {
+// cct config watcher
+class CephContextObs : public md_config_obs_t {
+  CephContext *cct;
+
+public:
+  explicit CephContextObs(CephContext *cct) : cct(cct) {}
+
+  const char** get_tracked_conf_keys() const override {
+    static const char *KEYS[] = {
+      "enable_experimental_unrecoverable_data_corrupting_features",
+      "crush_location",
+      "container_image",  // just so we don't hear complaints about it!
+      NULL
+    };
+    return KEYS;
+  }
+
+  void handle_conf_change(const ConfigProxy& conf,
+                          const std::set <std::string> &changed) override {
+    if (changed.count(
+	  "enable_experimental_unrecoverable_data_corrupting_features")) {
+      std::lock_guard lg(cct->_feature_lock);
+
+      cct->_experimental_features.clear();
+      auto add_experimental_feature = [this] (auto feature) {
+        cct->_experimental_features.emplace(std::string{feature});
+      };
+      for_each_substr(conf->enable_experimental_unrecoverable_data_corrupting_features,
+          ";,= \t", add_experimental_feature);
+
+      if (getenv("CEPH_DEV") == NULL) {
+        if (!cct->_experimental_features.empty()) {
+          if (cct->_experimental_features.count("*")) {
+            lderr(cct) << "WARNING: all dangerous and experimental features are enabled." << dendl;
+          } else {
+            lderr(cct) << "WARNING: the following dangerous and experimental features are enabled: "
+              << cct->_experimental_features << dendl;
+          }
+        }
+      }
+
+    }
+    if (changed.count("crush_location")) {
+      cct->crush_location.update_from_conf();
+    }
+  }
+};
+// perfcounter hooks
+
+class CephContextHook : public AdminSocketHook {
+  CephContext *m_cct;
+
+public:
+  explicit CephContextHook(CephContext *cct) : m_cct(cct) {}
+
+  int call(std::string_view command, const cmdmap_t& cmdmap,
+	   Formatter *f,
+	   std::ostream& errss,
+	   bufferlist& out) override {
+    try {
+      return m_cct->do_command(command, cmdmap, f, errss, &out);
+    } catch (const bad_cmd_get& e) {
+      return -EINVAL;
+    }
+  }
+};
+
+
+bool CephContext::check_experimental_feature_enabled(const std::string& feat)
+{
+  std::stringstream message;
+  bool enabled = check_experimental_feature_enabled(feat, &message);
+  lderr(this) << message.str() << dendl;
+  return enabled;
+}
+
+bool CephContext::check_experimental_feature_enabled(const std::string& feat,
+						     std::ostream *message)
+{
+  std::unique_lock<ceph::spinlock> lg(_feature_lock);
+
+  bool enabled = (_experimental_features.count(feat) ||
+		  _experimental_features.count("*"));
+
+  if (enabled) {
+    (*message) << "WARNING: experimental feature '" << feat << "' is enabled\n";
+    (*message) << "Please be aware that this feature is experimental, untested,\n";
+    (*message) << "unsupported, and may result in data corruption, data loss,\n";
+    (*message) << "and/or irreparable damage to your cluster.  Do not use\n";
+    (*message) << "feature with important data.\n";
+  } else {
+    (*message) << "*** experimental feature '" << feat << "' is not enabled ***\n";
+    (*message) << "This feature is marked as experimental, which means it\n";
+    (*message) << " - is untested\n";
+    (*message) << " - is unsupported\n";
+    (*message) << " - may corrupt your data\n";
+    (*message) << " - may break your cluster is an unrecoverable fashion\n";
+    (*message) << "To enable this feature, add this to your ceph.conf:\n";
+    (*message) << "  enable experimental unrecoverable data corrupting features = " << feat << "\n";
+  }
+  return enabled;
+}
+
+int CephContext::do_command(std::string_view command, const cmdmap_t& cmdmap,
+			    Formatter *f,
+			    std::ostream& ss,
+			    bufferlist *out)
+{
+  try {
+    return _do_command(command, cmdmap, f, ss, out);
+  } catch (const bad_cmd_get& e) {
+    ss << e.what();
+    return -EINVAL;
+  }
+}
+
+int CephContext::_do_command(
+  std::string_view command, const cmdmap_t& cmdmap,
+  Formatter *f,
+  std::ostream& ss,
+  bufferlist *out)
+{
+  int r = 0;
+  lgeneric_dout(this, 1) << "do_command '" << command << "' '" << cmdmap << "'"
+			 << dendl;
+  ceph_assert_always(!(command == "assert" && _conf->debug_asok_assert_abort));
+  if (command == "abort") {
+    if (_conf->debug_asok_assert_abort) {
+      ceph_abort();
+    } else {
+      return -EPERM;
+    }
+  }
+  if (command == "leak_some_memory") {
+    char *foo = new char[1234];
+    (void)foo;
+  }
+  else if (command == "perfcounters_dump" || command == "1" ||
+      command == "perf dump") {
+    std::string logger;
+    std::string counter;
+    cmd_getval(cmdmap, "logger", logger);
+    cmd_getval(cmdmap, "counter", counter);
+    _perf_counters_collection->dump_formatted(f, false, logger, counter);
+  }
+  else if (command == "perfcounters_schema" || command == "2" ||
+    command == "perf schema") {
+    _perf_counters_collection->dump_formatted(f, true);
+  }
+  else if (command == "perf histogram dump") {
+    std::string logger;
+    std::string counter;
+    cmd_getval(cmdmap, "logger", logger);
+    cmd_getval(cmdmap, "counter", counter);
+    _perf_counters_collection->dump_formatted_histograms(f, false, logger,
+                                                         counter);
+  }
+  else if (command == "perf histogram schema") {
+    _perf_counters_collection->dump_formatted_histograms(f, true);
+  }
+  else if (command == "perf reset") {
+    std::string var;
+    std::string section(command);
+    f->open_object_section(section.c_str());
+    if (!cmd_getval(cmdmap, "var", var)) {
+      f->dump_string("error", "syntax error: 'perf reset <var>'");
+    } else {
+     if(!_perf_counters_collection->reset(var))
+        f->dump_stream("error") << "Not find: " << var;
+     else
+       f->dump_string("success", std::string(command) + ' ' + var);
+    }
+    f->close_section();
+  }
+  else {
+    std::string section(command);
+    boost::replace_all(section, " ", "_");
+    f->open_object_section(section.c_str());
+    if (command == "config show") {
+      _conf.show_config(f);
+    }
+    else if (command == "config unset") {
+      std::string var;
+      if (!(cmd_getval(cmdmap, "var", var))) {
+	r = -EINVAL;
+      } else {
+        r = _conf.rm_val(var.c_str());
+        if (r < 0 && r != -ENOENT) {
+          ss << "error unsetting '" << var << "': "
+	     << cpp_strerror(r);
+        } else {
+          _conf.apply_changes(&ss);
+	  r = 0;
+        }
+      }
+
+    }
+    else if (command == "config set") {
+      std::string var;
+      std::vector<std::string> val;
+
+      if (!(cmd_getval(cmdmap, "var", var)) ||
+          !(cmd_getval(cmdmap, "val", val))) {
+	r = -EINVAL;
+      } else {
+	// val may be multiple words
+	auto valstr = str_join(val, " ");
+        r = _conf.set_val(var.c_str(), valstr.c_str());
+        if (r < 0) {
+          ss << "error setting '" << var << "' to '" << valstr << "': "
+	     << cpp_strerror(r);
+        } else {
+	  std::stringstream ss;
+          _conf.apply_changes(&ss);
+	  f->dump_string("success", ss.str());
+        }
+      }
+    } else if (command == "config get") {
+      std::string var;
+      if (!cmd_getval(cmdmap, "var", var)) {
+	r = -EINVAL;
+      } else {
+	char buf[4096];
+	// FIPS zeroization audit 20191115: this memset is not security related.
+	memset(buf, 0, sizeof(buf));
+	char *tmp = buf;
+	r = _conf.get_val(var.c_str(), &tmp, sizeof(buf));
+	if (r < 0) {
+	  ss << "error getting '" << var << "': " << cpp_strerror(r);
+	} else {
+	  f->dump_string(var.c_str(), buf);
+	}
+      }
+    } else if (command == "config help") {
+      std::string var;
+      if (cmd_getval(cmdmap, "var", var)) {
+        // Output a single one
+        std::string key = ConfFile::normalize_key_name(var);
+	auto schema = _conf.get_schema(key);
+        if (!schema) {
+          ss << "Setting not found: '" << key << "'";
+	  r = -ENOENT;
+        } else {
+          f->dump_object("option", *schema);
+        }
+      } else {
+        // Output all
+        f->open_array_section("options");
+        for (const auto &option : ceph_options) {
+          f->dump_object("option", option);
+        }
+        f->close_section();
+      }
+    } else if (command == "config diff") {
+      f->open_object_section("diff");
+      _conf.diff(f);
+      f->close_section(); // unknown
+    } else if (command == "config diff get") {
+      std::string setting;
+      f->open_object_section("diff");
+      _conf.diff(f, setting);
+      f->close_section(); // unknown
+    }
+    else if (command == "injectargs") {
+      std::vector<std::string> argsvec;
+      cmd_getval(cmdmap, "injected_args", argsvec);
+      if (!argsvec.empty()) {
+	auto args = joinify<std::string>(argsvec.begin(), argsvec.end(), " ");
+	r = _conf.injectargs(args, &ss);
+      }
+    }
+    else if (command == "log flush") {
+      _log->flush();
+    }
+    else if (command == "log dump") {
+      _log->dump_recent();
+    }
+    else if (command == "log reopen") {
+      _log->reopen_log_file();
+    }
+    else {
+      ceph_abort_msg("registered under wrong command?");    
+    }
+    f->close_section();
+  }
+  lgeneric_dout(this, 1) << "do_command '" << command << "' '" << cmdmap
+		         << "' result is " << out->length() << " bytes" << dendl;
+  return r;
+}
+
+CephContext::CephContext(uint32_t module_type_,
+                         enum code_environment_t code_env,
+                         int init_flags_)
+  : nref(1),
+    _conf{code_env == CODE_ENVIRONMENT_DAEMON},
+    _log(NULL),
+    _module_type(module_type_),
+    _init_flags(init_flags_),
+    _set_uid(0),
+    _set_gid(0),
+    _set_uid_string(),
+    _set_gid_string(),
+    _crypto_inited(0),
+    _service_thread(NULL),
+    _log_obs(NULL),
+    _admin_socket(NULL),
+    _perf_counters_collection(NULL),
+    _perf_counters_conf_obs(NULL),
+    _heartbeat_map(NULL),
+    _crypto_none(NULL),
+    _crypto_aes(NULL),
+    _plugin_registry(NULL),
+    _lockdep_obs(NULL),
+    crush_location(this)
+{
+  _log = new ceph::logging::Log(&_conf->subsys);
+
+  _log_obs = new LogObs(_log);
+  _conf.add_observer(_log_obs);
+
+  _cct_obs = new CephContextObs(this);
+  _conf.add_observer(_cct_obs);
+
+  _lockdep_obs = new LockdepObs(this);
+  _conf.add_observer(_lockdep_obs);
+
+  _perf_counters_collection = new PerfCountersCollection(this);
+ 
+  _admin_socket = new AdminSocket(this);
+  _heartbeat_map = new HeartbeatMap(this);
+
+  _plugin_registry = new PluginRegistry(this);
+
+  _admin_hook = new CephContextHook(this);
+  _admin_socket->register_command("assert", _admin_hook, "");
+  _admin_socket->register_command("abort", _admin_hook, "");
+  _admin_socket->register_command("leak_some_memory", _admin_hook, "");
+  _admin_socket->register_command("perfcounters_dump", _admin_hook, "");
+  _admin_socket->register_command("1", _admin_hook, "");
+  _admin_socket->register_command("perf dump name=logger,type=CephString,req=false name=counter,type=CephString,req=false", _admin_hook, "dump perfcounters value");
+  _admin_socket->register_command("perfcounters_schema", _admin_hook, "");
+  _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");
+  _admin_socket->register_command("2", _admin_hook, "");
+  _admin_socket->register_command("perf schema", _admin_hook, "dump perfcounters schema");
+  _admin_socket->register_command("perf histogram schema", _admin_hook, "dump perf histogram schema");
+  _admin_socket->register_command("perf reset name=var,type=CephString", _admin_hook, "perf reset <name>: perf reset all or one perfcounter name");
+  _admin_socket->register_command("config show", _admin_hook, "dump current config settings");
+  _admin_socket->register_command("config help name=var,type=CephString,req=false", _admin_hook, "get config setting schema and descriptions");
+  _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");
+  _admin_socket->register_command("config unset name=var,type=CephString",  _admin_hook, "config unset <field>: unset a config variable");
+  _admin_socket->register_command("config get name=var,type=CephString", _admin_hook, "config get <field>: get the config value");
+  _admin_socket->register_command(
+      "config diff", _admin_hook,
+      "dump diff of current config and default config");
+  _admin_socket->register_command(
+      "config diff get name=var,type=CephString", _admin_hook,
+      "dump diff get <field>: dump diff of current and default config setting <field>");
+  _admin_socket->register_command("injectargs name=injected_args,type=CephString,n=N", _admin_hook, "inject configuration arguments into running daemon"),
+  _admin_socket->register_command("log flush", _admin_hook, "flush log entries to log file");
+  _admin_socket->register_command("log dump", _admin_hook, "dump recent log entries to log file");
+  _admin_socket->register_command("log reopen", _admin_hook, "reopen log file");
+
+  _crypto_none = CryptoHandler::create(CEPH_CRYPTO_NONE);
+  _crypto_aes = CryptoHandler::create(CEPH_CRYPTO_AES);
+  _crypto_random.reset(new CryptoRandom());
+
+  lookup_or_create_singleton_object<MempoolObs>("mempool_obs", false, this);
+}
+
+CephContext::~CephContext()
+{
+  associated_objs.clear();
+  join_service_thread();
+
+  if (_cct_perf) {
+    _perf_counters_collection->remove(_cct_perf);
+    delete _cct_perf;
+    _cct_perf = NULL;
+  }
+
+  delete _plugin_registry;
+
+  _admin_socket->unregister_commands(_admin_hook);
+  delete _admin_hook;
+  delete _admin_socket;
+
+  delete _heartbeat_map;
+
+  delete _perf_counters_collection;
+  _perf_counters_collection = NULL;
+
+  delete _perf_counters_conf_obs;
+  _perf_counters_conf_obs = NULL;
+
+  _conf.remove_observer(_log_obs);
+  delete _log_obs;
+  _log_obs = NULL;
+
+  _conf.remove_observer(_cct_obs);
+  delete _cct_obs;
+  _cct_obs = NULL;
+
+  _conf.remove_observer(_lockdep_obs);
+  delete _lockdep_obs;
+  _lockdep_obs = NULL;
+
+  _log->stop();
+  delete _log;
+  _log = NULL;
+
+  delete _crypto_none;
+  delete _crypto_aes;
+  if (_crypto_inited > 0) {
+    ceph_assert(_crypto_inited == 1);  // or else someone explicitly did
+				  // init but not shutdown
+    shutdown_crypto();
+  }
+}
+
+void CephContext::put() {
+  if (--nref == 0) {
+    ANNOTATE_HAPPENS_AFTER(&nref);
+    ANNOTATE_HAPPENS_BEFORE_FORGET_ALL(&nref);
+    if (g_ceph_context == this)
+      g_ceph_context = nullptr;
+    delete this;
+  } else {
+    ANNOTATE_HAPPENS_BEFORE(&nref);
+  }
+}
+
+void CephContext::init_crypto()
+{
+  if (_crypto_inited++ == 0) {
+    TOPNSPC::crypto::init();
+  }
+}
+
+void CephContext::shutdown_crypto()
+{
+  if (--_crypto_inited == 0) {
+    TOPNSPC::crypto::shutdown(g_code_env == CODE_ENVIRONMENT_LIBRARY);
+  }
+}
+
+void CephContext::start_service_thread()
+{
+  {
+    std::lock_guard lg(_service_thread_lock);
+    if (_service_thread) {
+      return;
+    }
+    _service_thread = new CephContextServiceThread(this);
+    _service_thread->create("service");
+  }
+
+  if (!(get_init_flags() & CINIT_FLAG_NO_CCT_PERF_COUNTERS))
+    _enable_perf_counter();
+
+  // make logs flush on_exit()
+  if (_conf->log_flush_on_exit)
+    _log->set_flush_on_exit();
+
+  // Trigger callbacks on any config observers that were waiting for
+  // it to become safe to start threads.
+  _conf.set_safe_to_start_threads();
+  _conf.call_all_observers();
+
+  // start admin socket
+  if (_conf->admin_socket.length())
+    _admin_socket->init(_conf->admin_socket);
+}
+
+void CephContext::reopen_logs()
+{
+  std::lock_guard lg(_service_thread_lock);
+  if (_service_thread)
+    _service_thread->reopen_logs();
+}
+
+void CephContext::join_service_thread()
+{
+  std::unique_lock<ceph::spinlock> lg(_service_thread_lock);
+
+  CephContextServiceThread *thread = _service_thread;
+  if (!thread) {
+    return;
+  }
+  _service_thread = NULL;
+
+  lg.unlock();
+
+  thread->exit_thread();
+  thread->join();
+  delete thread;
+
+  if (!(get_init_flags() & CINIT_FLAG_NO_CCT_PERF_COUNTERS))
+    _disable_perf_counter();
+}
+
+uint32_t CephContext::get_module_type() const
+{
+  return _module_type;
+}
+
+void CephContext::set_init_flags(int flags)
+{
+  _init_flags = flags;
+}
+
+int CephContext::get_init_flags() const
+{
+  return _init_flags;
+}
+
+PerfCountersCollection *CephContext::get_perfcounters_collection()
+{
+  return _perf_counters_collection;
+}
+
+void CephContext::_enable_perf_counter()
+{
+  assert(!_cct_perf);
+  PerfCountersBuilder plb(this, "cct", l_cct_first, l_cct_last);
+  plb.add_u64(l_cct_total_workers, "total_workers", "Total workers");
+  plb.add_u64(l_cct_unhealthy_workers, "unhealthy_workers", "Unhealthy workers");
+  _cct_perf = plb.create_perf_counters();
+  _perf_counters_collection->add(_cct_perf);
+
+  assert(_mempool_perf_names.empty());
+  assert(_mempool_perf_descriptions.empty());
+  _mempool_perf_names.reserve(mempool::num_pools * 2);
+  _mempool_perf_descriptions.reserve(mempool::num_pools * 2);
+  for (unsigned i = 0; i < mempool::num_pools; ++i) {
+    std::string n = mempool::get_pool_name(mempool::pool_index_t(i));
+    _mempool_perf_names.push_back(n + "_bytes"s);
+    _mempool_perf_descriptions.push_back(
+      "mempool "s + n + " total bytes");
+    _mempool_perf_names.push_back(n + "_items"s);
+    _mempool_perf_descriptions.push_back(
+      "mempool "s + n + " total items"s);
+  }
+
+  PerfCountersBuilder plb2(this, "mempool", l_mempool_first,
+			  l_mempool_first + 1 + 2*mempool::num_pools);
+  unsigned l = l_mempool_first + 1;
+  for (unsigned i = 0; i < mempool::num_pools; ++i) {
+    plb2.add_u64(l++, _mempool_perf_names[i*2].c_str(),
+		 _mempool_perf_descriptions[i*2].c_str());
+    plb2.add_u64(l++, _mempool_perf_names[i*2+1].c_str(),
+		 _mempool_perf_descriptions[i*2+1].c_str());
+  }
+  _mempool_perf = plb2.create_perf_counters();
+  _perf_counters_collection->add(_mempool_perf);
+}
+
+void CephContext::_disable_perf_counter()
+{
+  if (!_cct_perf) {
+    return;
+  }
+  _perf_counters_collection->remove(_cct_perf);
+  delete _cct_perf;
+  _cct_perf = nullptr;
+
+  _perf_counters_collection->remove(_mempool_perf);
+  delete _mempool_perf;
+  _mempool_perf = nullptr;
+  _mempool_perf_names.clear();
+  _mempool_perf_descriptions.clear();
+}
+
+void CephContext::_refresh_perf_values()
+{
+  if (_cct_perf) {
+    _cct_perf->set(l_cct_total_workers, _heartbeat_map->get_total_workers());
+    _cct_perf->set(l_cct_unhealthy_workers, _heartbeat_map->get_unhealthy_workers());
+  }
+  unsigned l = l_mempool_first + 1;
+  for (unsigned i = 0; i < mempool::num_pools; ++i) {
+    mempool::pool_t& p = mempool::get_pool(mempool::pool_index_t(i));
+    _mempool_perf->set(l++, p.allocated_bytes());
+    _mempool_perf->set(l++, p.allocated_items());
+  }
+}
+
+AdminSocket *CephContext::get_admin_socket()
+{
+  return _admin_socket;
+}
+
+CryptoHandler *CephContext::get_crypto_handler(int type)
+{
+  switch (type) {
+  case CEPH_CRYPTO_NONE:
+    return _crypto_none;
+  case CEPH_CRYPTO_AES:
+    return _crypto_aes;
+  default:
+    return NULL;
+  }
+}
+
+void CephContext::notify_pre_fork()
+{
+  {
+    std::lock_guard lg(_fork_watchers_lock);
+    for (auto &&t : _fork_watchers) {
+      t->handle_pre_fork();
+    }
+  }
+  {
+    // note: we don't hold a lock here, but we assume we are idle at
+    // fork time, which happens during process init and startup.
+    auto i = associated_objs.begin();
+    while (i != associated_objs.end()) {
+      if (associated_objs_drop_on_fork.count(i->first.first)) {
+	i = associated_objs.erase(i);
+      } else {
+	++i;
+      }
+    }
+    associated_objs_drop_on_fork.clear();
+  }
+}
+
+void CephContext::notify_post_fork()
+{
+  ceph::spin_unlock(&_fork_watchers_lock);
+  for (auto &&t : _fork_watchers)
+    t->handle_post_fork();
+}
+
+void CephContext::set_mon_addrs(const MonMap& mm) {
+  std::vector<entity_addrvec_t> mon_addrs;
+  for (auto& i : mm.mon_info) {
+    mon_addrs.push_back(i.second.public_addrs);
+  }
+
+  set_mon_addrs(mon_addrs);
+}
+}
+#endif	// WITH_SEASTAR