remove ceph code

[stor4nfv.git] / src / ceph / src / erasure-code / ErasureCodePlugin.cc

diff --git a/src/ceph/src/erasure-code/ErasureCodePlugin.cc b/src/ceph/src/erasure-code/ErasureCodePlugin.cc
deleted file mode 100644 (file)
index 026cd3c..0000000
--- a/src/ceph/src/erasure-code/ErasureCodePlugin.cc
+++ /dev/null
@@ -1,202 +0,0 @@
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
-// vim: ts=8 sw=2 smarttab
-/*
- * Ceph distributed storage system
- *
- * Copyright (C) 2013,2014 Cloudwatt <libre.licensing@cloudwatt.com>
- * Copyright (C) 2014 Red Hat <contact@redhat.com>
- *
- * Author: Loic Dachary <loic@dachary.org>
- *
- *  This library is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU Lesser General Public
- *  License as published by the Free Software Foundation; either
- *  version 2.1 of the License, or (at your option) any later version.
- * 
- */
-
-#include <errno.h>
-#include <dlfcn.h>
-
-#include "ceph_ver.h"
-#include "ErasureCodePlugin.h"
-#include "common/errno.h"
-#include "include/str_list.h"
-
-using namespace std;
-
-#define PLUGIN_PREFIX "libec_"
-#if defined(DARWIN)
-#define PLUGIN_SUFFIX ".dylib"
-#else
-#define PLUGIN_SUFFIX ".so"
-#endif
-#define PLUGIN_INIT_FUNCTION "__erasure_code_init"
-#define PLUGIN_VERSION_FUNCTION "__erasure_code_version"
-
-ErasureCodePluginRegistry ErasureCodePluginRegistry::singleton;
-
-ErasureCodePluginRegistry::ErasureCodePluginRegistry() :
-  lock("ErasureCodePluginRegistry::lock"),
-  loading(false),
-  disable_dlclose(false)
-{
-}
-
-ErasureCodePluginRegistry::~ErasureCodePluginRegistry()
-{
-  if (disable_dlclose)
-    return;
-
-  for (std::map<std::string,ErasureCodePlugin*>::iterator i = plugins.begin();
-       i != plugins.end();
-       ++i) {
-    void *library = i->second->library;
-    delete i->second;
-    dlclose(library);
-  }
-}
-
-int ErasureCodePluginRegistry::remove(const std::string &name)
-{
-  assert(lock.is_locked());
-  if (plugins.find(name) == plugins.end())
-    return -ENOENT;
-  std::map<std::string,ErasureCodePlugin*>::iterator plugin = plugins.find(name);
-  void *library = plugin->second->library;
-  delete plugin->second;
-  dlclose(library);
-  plugins.erase(plugin);
-  return 0;
-}
-
-int ErasureCodePluginRegistry::add(const std::string &name,
-                                   ErasureCodePlugin* plugin)
-{
-  assert(lock.is_locked());
-  if (plugins.find(name) != plugins.end())
-    return -EEXIST;
-  plugins[name] = plugin;
-  return 0;
-}
-
-ErasureCodePlugin *ErasureCodePluginRegistry::get(const std::string &name)
-{
-  assert(lock.is_locked());
-  if (plugins.find(name) != plugins.end())
-    return plugins[name];
-  else
-    return 0;
-}
-
-int ErasureCodePluginRegistry::factory(const std::string &plugin_name,
-                                      const std::string &directory,
-                                      ErasureCodeProfile &profile,
-                                      ErasureCodeInterfaceRef *erasure_code,
-                                      ostream *ss)
-{
-  ErasureCodePlugin *plugin;
-  {
-    Mutex::Locker l(lock);
-    plugin = get(plugin_name);
-    if (plugin == 0) {
-      loading = true;
-      int r = load(plugin_name, directory, &plugin, ss);
-      loading = false;
-      if (r != 0)
-       return r;
-    }
-  }
-
-  int r = plugin->factory(directory, profile, erasure_code, ss);
-  if (r)
-    return r;
-  if (profile != (*erasure_code)->get_profile()) {
-    *ss << __func__ << " profile " << profile << " != get_profile() "
-       << (*erasure_code)->get_profile() << std::endl;
-    return -EINVAL;
-  }
-  return 0;
-}
-
-static const char *an_older_version() {
-  return "an older version";
-}
-
-int ErasureCodePluginRegistry::load(const std::string &plugin_name,
-                                   const std::string &directory,
-                                   ErasureCodePlugin **plugin,
-                                   ostream *ss)
-{
-  assert(lock.is_locked());
-  std::string fname = directory + "/" PLUGIN_PREFIX
-    + plugin_name + PLUGIN_SUFFIX;
-  void *library = dlopen(fname.c_str(), RTLD_NOW);
-  if (!library) {
-    *ss << "load dlopen(" << fname << "): " << dlerror();
-    return -EIO;
-  }
-
-  const char * (*erasure_code_version)() =
-    (const char *(*)())dlsym(library, PLUGIN_VERSION_FUNCTION);
-  if (erasure_code_version == NULL)
-    erasure_code_version = an_older_version;
-  if (erasure_code_version() != string(CEPH_GIT_NICE_VER)) {
-    *ss << "expected plugin " << fname << " version " << CEPH_GIT_NICE_VER
-       << " but it claims to be " << erasure_code_version() << " instead";
-    dlclose(library);
-    return -EXDEV;
-  }
-
-  int (*erasure_code_init)(const char *, const char *) =
-    (int (*)(const char *, const char *))dlsym(library, PLUGIN_INIT_FUNCTION);
-  if (erasure_code_init) {
-    std::string name = plugin_name;
-    int r = erasure_code_init(name.c_str(), directory.c_str());
-    if (r != 0) {
-      *ss << "erasure_code_init(" << plugin_name
-         << "," << directory
-         << "): " << cpp_strerror(r);
-      dlclose(library);
-      return r;
-    }
-  } else {
-    *ss << "load dlsym(" << fname
-       << ", " << PLUGIN_INIT_FUNCTION
-       << "): " << dlerror();
-    dlclose(library);
-    return -ENOENT;
-  }
-
-  *plugin = get(plugin_name);
-  if (*plugin == 0) {
-    *ss << "load " << PLUGIN_INIT_FUNCTION << "()"
-       << "did not register " << plugin_name;
-    dlclose(library);
-    return -EBADF;
-  }
-
-  (*plugin)->library = library;
-
-  *ss << __func__ << ": " << plugin_name << " ";
-
-  return 0;
-}
-
-int ErasureCodePluginRegistry::preload(const std::string &plugins,
-                                      const std::string &directory,
-                                      ostream *ss)
-{
-  Mutex::Locker l(lock);
-  list<string> plugins_list;
-  get_str_list(plugins, plugins_list);
-  for (list<string>::iterator i = plugins_list.begin();
-       i != plugins_list.end();
-       ++i) {
-    ErasureCodePlugin *plugin;
-    int r = load(*i, directory, &plugin, ss);
-    if (r)
-      return r;
-  }
-  return 0;
-}