ceph/src/common/common_init.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) 2010-2011 Dreamhost
   7  *
   8  * This is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License version 2.1, as published by the Free Software
  11  * Foundation.  See file COPYING.
  12  *
  13  */
  14
  15 #include "common/admin_socket.h"
  16 #include "common/ceph_argparse.h"
  17 #include "common/common_init.h"
  18 #include "common/valgrind.h"
  19 #include "common/zipkin_trace.h"
  20
  21 #define dout_subsys ceph_subsys_
  22
  23 #define _STR(x) #x
  24 #define STRINGIFY(x) _STR(x)
  25
  26 CephContext *common_preinit(const CephInitParameters &iparams,
  27                             enum code_environment_t code_env, int flags)
  28 {
  29   // set code environment
  30   ANNOTATE_BENIGN_RACE_SIZED(&g_code_env, sizeof(g_code_env), "g_code_env");
  31   g_code_env = code_env;
  32
  33   // Create a configuration object
  34   CephContext *cct = new CephContext(iparams.module_type, code_env, flags);
  35
  36   md_config_t *conf = cct->_conf;
  37   // add config observers here
  38
  39   // Set up our entity name.
  40   conf->name = iparams.name;
  41
  42   // different default keyring locations for osd and mds.  this is
  43   // for backward compatibility.  moving forward, we want all keyrings
  44   // in these locations.  the mon already forces $mon_data/keyring.
  45   if (conf->name.is_mds()) {
  46     conf->set_val("keyring", "$mds_data/keyring", false);
  47   } else if (conf->name.is_osd()) {
  48     conf->set_val("keyring", "$osd_data/keyring", false);
  49   }
  50
  51   if (code_env == CODE_ENVIRONMENT_LIBRARY ||
  52       code_env == CODE_ENVIRONMENT_UTILITY_NODOUT) {
  53     conf->set_val_or_die("log_to_stderr", "false");
  54     conf->set_val_or_die("err_to_stderr", "false");
  55     conf->set_val_or_die("log_flush_on_exit", "false");
  56   }
  57   if (code_env != CODE_ENVIRONMENT_DAEMON) {
  58     // NOTE: disable ms subsystem gathering in clients by default
  59     conf->set_val_or_die("debug_ms", "0/0");
  60   }
  61
  62   return cct;
  63 }
  64
  65 void complain_about_parse_errors(CephContext *cct,
  66                                  std::deque<std::string> *parse_errors)
  67 {
  68   if (parse_errors->empty())
  69     return;
  70   lderr(cct) << "Errors while parsing config file!" << dendl;
  71   int cur_err = 0;
  72   static const int MAX_PARSE_ERRORS = 20;
  73   for (std::deque<std::string>::const_iterator p = parse_errors->begin();
  74        p != parse_errors->end(); ++p)
  75   {
  76     lderr(cct) << *p << dendl;
  77     if (cur_err == MAX_PARSE_ERRORS) {
  78       lderr(cct) << "Suppressed " << (parse_errors->size() - MAX_PARSE_ERRORS)
  79            << " more errors." << dendl;
  80       break;
  81     }
  82     ++cur_err;
  83   }
  84 }
  85
  86 /* Please be sure that this can safely be called multiple times by the
  87  * same application. */
  88 void common_init_finish(CephContext *cct)
  89 {
  90   cct->init_crypto();
  91   ZTracer::ztrace_init();
  92
  93   int flags = cct->get_init_flags();
  94   if (!(flags & CINIT_FLAG_NO_DAEMON_ACTIONS))
  95     cct->start_service_thread();
  96
  97   if ((flags & CINIT_FLAG_DEFER_DROP_PRIVILEGES) &&
  98       (cct->get_set_uid() || cct->get_set_gid())) {
  99     cct->get_admin_socket()->chown(cct->get_set_uid(), cct->get_set_gid());
 100   }
 101
 102   md_config_t *conf = cct->_conf;
 103
 104   if (!conf->admin_socket.empty() && !conf->admin_socket_mode.empty()) {
 105     int ret = 0;
 106     std::string err;
 107
 108     ret = strict_strtol(conf->admin_socket_mode.c_str(), 8, &err);
 109     if (err.empty()) {
 110       if (!(ret & (~ACCESSPERMS))) {
 111         cct->get_admin_socket()->chmod(static_cast<mode_t>(ret));
 112       } else {
 113         lderr(cct) << "Invalid octal permissions string: "
 114             << conf->admin_socket_mode << dendl;
 115       }
 116     } else {
 117       lderr(cct) << "Invalid octal string: " << err << dendl;
 118     }
 119   }
 120 }