+++ /dev/null
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-
-#include "tools/rbd/ArgumentTypes.h"
-#include "tools/rbd/Shell.h"
-#include "tools/rbd/Utils.h"
-#include "include/stringify.h"
-#include "common/SubProcess.h"
-#include <iostream>
-#include <boost/algorithm/string/predicate.hpp>
-#include <boost/scope_exit.hpp>
-#include <boost/program_options.hpp>
-
-namespace rbd {
-namespace action {
-namespace nbd {
-
-namespace at = argument_types;
-namespace po = boost::program_options;
-
-static int call_nbd_cmd(const po::variables_map &vm,
- const std::vector<const char*> &args)
-{
- char exe_path[PATH_MAX];
- ssize_t exe_path_bytes = readlink("/proc/self/exe", exe_path,
- sizeof(exe_path) - 1);
- if (exe_path_bytes < 0) {
- strcpy(exe_path, "rbd-nbd");
- } else {
- if (snprintf(exe_path + exe_path_bytes,
- sizeof(exe_path) - exe_path_bytes,
- "-nbd") < 0) {
- return -EOVERFLOW;
- }
- }
-
- SubProcess process(exe_path, 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-nbd: " << process.err() << std::endl;
- return -EINVAL;
- } else if (process.join()) {
- std::cerr << "rbd: rbd-nbd failed with error: " << process.err() << std::endl;
- return -EINVAL;
- }
-
- return 0;
-}
-
-void get_show_arguments(po::options_description *positional,
- po::options_description *options)
-{ }
-
-int execute_show(const po::variables_map &vm)
-{
- std::vector<const char*> args;
-
- args.push_back("list-mapped");
-
- return call_nbd_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 nbd device")
- ("nbds_max", po::value<std::string>(), "override module param nbds_max")
- ("max_part", po::value<std::string>(), "override module param max_part");
-}
-
-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());
- }
- if (vm.count("nbds_max")) {
- args.push_back("--nbds_max");
- args.push_back(vm["nbds_max"].as<std::string>().c_str());
- }
- if (vm.count("max_part")) {
- args.push_back("--max_part");
- args.push_back(vm["max_part"].as<std::string>().c_str());
- }
-
- return call_nbd_cmd(vm, args);
-}
-
-void get_unmap_arguments(po::options_description *positional,
- po::options_description *options)
-{
- positional->add_options()
- ("device-spec", "specify nbd 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: nbd 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_nbd_cmd(vm, args);
-}
-
-Shell::SwitchArguments switched_arguments({"read-only"});
-
-Shell::Action action_show(
- {"nbd", "list"}, {"nbd", "ls"}, "List the nbd devices already used.", "",
- &get_show_arguments, &execute_show);
-
-Shell::Action action_map(
- {"nbd", "map"}, {}, "Map image to a nbd device.", "",
- &get_map_arguments, &execute_map);
-
-Shell::Action action_unmap(
- {"nbd", "unmap"}, {}, "Unmap a nbd device.", "",
- &get_unmap_arguments, &execute_unmap);
-
-} // namespace nbd
-} // namespace action
-} // namespace rbd
Code Review / stor4nfv.git / blobdiff