ceph/src/librados-config.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) 2004-2006 Sage Weil <sage@newdream.net>
   7  *
   8  * This is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public
  10  * License version 2, as published by the Free Software
  11  * Foundation.  See file COPYING.
  12  *
  13  */
  14
  15 #include "common/config.h"
  16
  17 #include "common/ceph_argparse.h"
  18 #include "global/global_init.h"
  19 #include "global/global_context.h"
  20 #include "include/rados/librados.h"
  21
  22 void usage()
  23 {
  24   cout << "usage: librados-config [option]\n"
  25        << "where options are:\n"
  26        << "  --version                    library version\n"
  27        << "  --vernum                     library version code\n";
  28 }
  29
  30 void usage_exit()
  31 {
  32   usage();
  33   exit(1);
  34 }
  35
  36 int main(int argc, const char **argv)
  37 {
  38   vector<const char*> args;
  39   argv_to_vec(argc, argv, args);
  40   if (args.empty()) {
  41     cerr << argv[0] << ": -h or --help for usage" << std::endl;
  42     exit(1);
  43   }
  44   if (ceph_argparse_need_usage(args)) {
  45     usage();
  46     exit(0);
  47   }
  48
  49   bool opt_version = false;
  50   bool opt_vernum = false;
  51
  52   auto cct = global_init(NULL, args, CEPH_ENTITY_TYPE_CLIENT,
  53                          CODE_ENVIRONMENT_UTILITY,
  54                          CINIT_FLAG_NO_DEFAULT_CONFIG_FILE);
  55   common_init_finish(g_ceph_context);
  56   for (std::vector<const char*>::iterator i = args.begin();
  57        i != args.end(); ) {
  58     if (strcmp(*i, "--") == 0) {
  59       break;
  60     }
  61     else if (strcmp(*i, "--version") == 0) {
  62       opt_version = true;
  63       i = args.erase(i);
  64     }
  65     else if (strcmp(*i, "--vernum") == 0) {
  66       opt_vernum = true;
  67       i = args.erase(i);
  68     }
  69     else
  70       ++i;
  71   }
  72
  73   if (!opt_version && !opt_vernum)
  74     usage_exit();
  75
  76   if (opt_version) {
  77     int maj, min, ext;
  78     rados_version(&maj, &min, &ext);
  79     cout << maj << "." << min << "." << ext << std::endl;
  80   } else if (opt_vernum) {
  81     cout << hex << LIBRADOS_VERSION_CODE << dec << std::endl;
  82   }
  83
  84   return 0;
  85 }
  86