initial code repo

[stor4nfv.git] / src / ceph / src / tools / rbd / action / Ggate.cc

diff --git a/src/ceph/src/tools/rbd/action/Ggate.cc b/src/ceph/src/tools/rbd/action/Ggate.cc
new file mode 100644 (file)
index 0000000..a87751b
--- /dev/null
+++ b/src/ceph/src/tools/rbd/action/Ggate.cc
@@ -0,0 +1,187 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include <sys/param.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include "include/stringify.h"
+#include "common/SubProcess.h"
+
+#include "tools/rbd/ArgumentTypes.h"
+#include "tools/rbd/Shell.h"
+#include "tools/rbd/Utils.h"
+
+#include <boost/algorithm/string/predicate.hpp>
+#include <boost/scope_exit.hpp>
+#include <boost/program_options.hpp>
+
+#include <iostream>
+
+namespace rbd {
+namespace action {
+namespace ggate {
+
+namespace at = argument_types;
+namespace po = boost::program_options;
+
+static int call_ggate_cmd(const po::variables_map &vm,
+                          const std::vector<const char*> &args)
+{
+  SubProcess process("rbd-ggate", SubProcess::KEEP, SubProcess::KEEP,
+                     SubProcess::KEEP);
+
+  if (vm.count("conf")) {
+    process.add_cmd_arg("--conf");
+    process.add_cmd_arg(vm["conf"].as<std::string>().c_str());
+  }
+  if (vm.count("cluster")) {
+    process.add_cmd_arg("--cluster");
+    process.add_cmd_arg(vm["cluster"].as<std::string>().c_str());
+  }
+  if (vm.count("id")) {
+    process.add_cmd_arg("--id");
+    process.add_cmd_arg(vm["id"].as<std::string>().c_str());
+  }
+  if (vm.count("name")) {
+    process.add_cmd_arg("--name");
+    process.add_cmd_arg(vm["name"].as<std::string>().c_str());
+  }
+  if (vm.count("mon_host")) {
+    process.add_cmd_arg("--mon_host");
+    process.add_cmd_arg(vm["mon_host"].as<std::string>().c_str());
+  }
+  if (vm.count("keyfile")) {
+    process.add_cmd_arg("--keyfile");
+    process.add_cmd_arg(vm["keyfile"].as<std::string>().c_str());
+  }
+  if (vm.count("keyring")) {
+    process.add_cmd_arg("--keyring");
+    process.add_cmd_arg(vm["keyring"].as<std::string>().c_str());
+  }
+
+  for (std::vector<const char*>::const_iterator p = args.begin();
+       p != args.end(); ++p)
+    process.add_cmd_arg(*p);
+
+  if (process.spawn()) {
+    std::cerr << "rbd: failed to run rbd-ggate: " << process.err() << std::endl;
+    return -EINVAL;
+  } else if (process.join()) {
+    std::cerr << "rbd: rbd-ggate failed with error: " << process.err()
+              << std::endl;
+    return -EINVAL;
+  }
+
+  return 0;
+}
+
+void get_list_arguments(po::options_description *positional,
+                        po::options_description *options)
+{ }
+
+int execute_list(const po::variables_map &vm)
+{
+  std::vector<const char*> args;
+
+  args.push_back("list");
+
+  return call_ggate_cmd(vm, args);
+}
+
+void get_map_arguments(po::options_description *positional,
+                       po::options_description *options)
+{
+  at::add_image_or_snap_spec_options(positional, options,
+                                     at::ARGUMENT_MODIFIER_NONE);
+  options->add_options()
+    ("read-only", po::bool_switch(), "map read-only")
+    ("exclusive", po::bool_switch(), "forbid writes by other clients")
+    ("device", po::value<std::string>(), "specify ggate device");
+}
+
+int execute_map(const po::variables_map &vm)
+{
+  size_t arg_index = 0;
+  std::string pool_name;
+  std::string image_name;
+  std::string snap_name;
+  int r = utils::get_pool_image_snapshot_names(
+    vm, at::ARGUMENT_MODIFIER_NONE, &arg_index, &pool_name, &image_name,
+    &snap_name, utils::SNAPSHOT_PRESENCE_PERMITTED,
+    utils::SPEC_VALIDATION_NONE);
+  if (r < 0) {
+    return r;
+  }
+
+  std::vector<const char*> args;
+
+  args.push_back("map");
+  std::string img;
+  img.append(pool_name);
+  img.append("/");
+  img.append(image_name);
+  if (!snap_name.empty()) {
+    img.append("@");
+    img.append(snap_name);
+  }
+  args.push_back(img.c_str());
+
+  if (vm["read-only"].as<bool>())
+    args.push_back("--read-only");
+
+  if (vm["exclusive"].as<bool>())
+    args.push_back("--exclusive");
+
+  if (vm.count("device")) {
+    args.push_back("--device");
+    args.push_back(vm["device"].as<std::string>().c_str());
+  }
+
+  return call_ggate_cmd(vm, args);
+}
+
+void get_unmap_arguments(po::options_description *positional,
+                         po::options_description *options)
+{
+  positional->add_options()
+    ("device-spec", "specify ggate device");
+}
+
+int execute_unmap(const po::variables_map &vm)
+{
+  std::string device_name = utils::get_positional_argument(vm, 0);
+  if (!boost::starts_with(device_name, "/dev/")) {
+    device_name.clear();
+  }
+
+  if (device_name.empty()) {
+    std::cerr << "rbd: ggate unmap requires device path" << std::endl;
+    return -EINVAL;
+  }
+
+  std::vector<const char*> args;
+
+  args.push_back("unmap");
+  args.push_back(device_name.c_str());
+
+  return call_ggate_cmd(vm, args);
+}
+
+Shell::SwitchArguments switched_arguments({"read-only", "exclusive"});
+
+Shell::Action action_list(
+  {"ggate", "list"}, {"ggate", "ls"}, "List mapped ggate devices.", "",
+  &get_list_arguments, &execute_list);
+
+Shell::Action action_map(
+  {"ggate", "map"}, {}, "Map an image to a ggate device.", "",
+  &get_map_arguments, &execute_map);
+
+Shell::Action action_unmap(
+  {"ggate", "unmap"}, {}, "Unmap a ggate device.", "",
+  &get_unmap_arguments, &execute_unmap);
+
+} // namespace ggate
+} // namespace action
+} // namespace rbd