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                             const char *data_dir_option)
  29 {
  30   // set code environment
  31   ANNOTATE_BENIGN_RACE_SIZED(&g_code_env, sizeof(g_code_env), "g_code_env");
  32   g_code_env = code_env;
  33
  34   // Create a configuration object
  35   CephContext *cct = new CephContext(iparams.module_type, flags);
  36
  37   md_config_t *conf = cct->_conf;
  38   // add config observers here
  39
  40   // Set up our entity name.
  41   conf->name = iparams.name;
  42
  43   if (data_dir_option)
  44     conf->data_dir_option = data_dir_option;
  45
  46   // Set some defaults based on code type
  47   switch (code_env) {
  48   case CODE_ENVIRONMENT_DAEMON:
  49     conf->set_val_or_die("daemonize", "true");
  50     conf->set_val_or_die("log_to_stderr", "false");
  51     conf->set_val_or_die("err_to_stderr", "true");
  52
  53     // different default keyring locations for osd and mds.  this is
  54     // for backward compatibility.  moving forward, we want all keyrings
  55     // in these locations.  the mon already forces $mon_data/keyring.
  56     if (conf->name.is_mds())
  57       conf->set_val("keyring", "$mds_data/keyring", false);
  58     else if (conf->name.is_osd())
  59       conf->set_val("keyring", "$osd_data/keyring", false);
  60     break;
  61
  62   case CODE_ENVIRONMENT_UTILITY_NODOUT:
  63   case CODE_ENVIRONMENT_LIBRARY:
  64     conf->set_val_or_die("log_to_stderr", "false");
  65     conf->set_val_or_die("err_to_stderr", "false");
  66     conf->set_val_or_die("log_flush_on_exit", "false");
  67     break;
  68
  69   default:
  70     break;
  71   }
  72
  73   if (flags & CINIT_FLAG_UNPRIVILEGED_DAEMON_DEFAULTS) {
  74     // do nothing special!  we used to do no default log, pid_file,
  75     // admin_socket, but changed our minds.  let's make ceph-fuse
  76     // and radosgw use the same defaults as ceph-{osd,mon,mds,...}
  77   } else if (code_env != CODE_ENVIRONMENT_DAEMON) {
  78     // no default log, pid_file, admin_socket
  79     conf->set_val_or_die("pid_file", "");
  80     conf->set_val_or_die("admin_socket", "");
  81     conf->set_val_or_die("log_file", "");
  82     // use less memory for logs
  83     conf->set_val_or_die("log_max_recent", "500");
  84   }
  85
  86   return cct;
  87 }
  88
  89 void complain_about_parse_errors(CephContext *cct,
  90                                  std::deque<std::string> *parse_errors)
  91 {
  92   if (parse_errors->empty())
  93     return;
  94   lderr(cct) << "Errors while parsing config file!" << dendl;
  95   int cur_err = 0;
  96   static const int MAX_PARSE_ERRORS = 20;
  97   for (std::deque<std::string>::const_iterator p = parse_errors->begin();
  98        p != parse_errors->end(); ++p)
  99   {
 100     lderr(cct) << *p << dendl;
 101     if (cur_err == MAX_PARSE_ERRORS) {
 102       lderr(cct) << "Suppressed " << (parse_errors->size() - MAX_PARSE_ERRORS)
 103            << " more errors." << dendl;
 104       break;
 105     }
 106     ++cur_err;
 107   }
 108 }
 109
 110 /* Please be sure that this can safely be called multiple times by the
 111  * same application. */
 112 void common_init_finish(CephContext *cct)
 113 {
 114   cct->init_crypto();
 115   ZTracer::ztrace_init();
 116
 117   int flags = cct->get_init_flags();
 118   if (!(flags & CINIT_FLAG_NO_DAEMON_ACTIONS))
 119     cct->start_service_thread();
 120
 121   if ((flags & CINIT_FLAG_DEFER_DROP_PRIVILEGES) &&
 122       (cct->get_set_uid() || cct->get_set_gid())) {
 123     cct->get_admin_socket()->chown(cct->get_set_uid(), cct->get_set_gid());
 124   }
 125
 126   md_config_t *conf = cct->_conf;
 127
 128   if (!conf->admin_socket.empty() && !conf->admin_socket_mode.empty()) {
 129     int ret = 0;
 130     std::string err;
 131
 132     ret = strict_strtol(conf->admin_socket_mode.c_str(), 8, &err);
 133     if (err.empty()) {
 134       if (!(ret & (~ACCESSPERMS))) {
 135         cct->get_admin_socket()->chmod(static_cast<mode_t>(ret));
 136       } else {
 137         lderr(cct) << "Invalid octal permissions string: "
 138             << conf->admin_socket_mode << dendl;
 139       }
 140     } else {
 141       lderr(cct) << "Invalid octal string: " << err << dendl;
 142     }
 143   }
 144 }