initial code repo

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

diff --git a/src/ceph/src/tools/rbd/action/Children.cc b/src/ceph/src/tools/rbd/action/Children.cc
new file mode 100644 (file)
index 0000000..2008bbe
--- /dev/null
+++ b/src/ceph/src/tools/rbd/action/Children.cc
@@ -0,0 +1,98 @@
+// -*- mode:C++; tab-width:8; c-basic-offsset: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 "common/errno.h"
+#include "common/Formatter.h"
+#include <iostream>
+#include <boost/program_options.hpp>
+
+namespace rbd {
+namespace action {
+namespace children {
+
+namespace at = argument_types;
+namespace po = boost::program_options;
+
+int do_list_children(librbd::Image &image, Formatter *f)
+{
+  std::set<std::pair<std::string, std::string> > children;
+  int r;
+
+  r = image.list_children(&children);
+  if (r < 0)
+    return r;
+
+  if (f)
+    f->open_array_section("children");
+
+  for (auto &child_it : children) {
+    if (f) {
+      f->open_object_section("child");
+      f->dump_string("pool", child_it.first);
+      f->dump_string("image", child_it.second);
+      f->close_section();
+    } else {
+      std::cout << child_it.first << "/" << child_it.second << std::endl;
+    }
+  }
+
+  if (f) {
+    f->close_section();
+    f->flush(std::cout);
+  }
+
+  return 0;
+}
+
+void get_arguments(po::options_description *positional,
+                   po::options_description *options) {
+  at::add_snap_spec_options(positional, options, at::ARGUMENT_MODIFIER_NONE);
+  at::add_format_options(options);
+}
+
+int execute(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_REQUIRED, utils::SPEC_VALIDATION_NONE);
+  if (r < 0) {
+    return r;
+  }
+
+  at::Format::Formatter formatter;
+  r = utils::get_formatter(vm, &formatter);
+  if (r < 0) {
+    return r;
+  }
+
+  librados::Rados rados;
+  librados::IoCtx io_ctx;
+  librbd::Image image;
+  r = utils::init_and_open_image(pool_name, image_name, "", snap_name, true,
+                                 &rados, &io_ctx, &image);
+  if (r < 0) {
+    return r;
+  }
+
+  r = do_list_children(image, formatter.get());
+  if (r < 0) {
+    std::cerr << "rbd: listing children failed: " << cpp_strerror(r)
+              << std::endl;
+    return r;
+  }
+  return 0;
+}
+
+Shell::Action action(
+  {"children"}, {}, "Display children of snapshot.", "", &get_arguments,
+  &execute);
+
+} // namespace children
+} // namespace action
+} // namespace rbd