[thin_show_duplicates] stub new command

Makefile.in

@@ -88,6 +88,7 @@ SOURCE=\
 	thin-provisioning/thin_repair.cc \
 	thin-provisioning/thin_restore.cc \
 	thin-provisioning/thin_rmap.cc \
+	thin-provisioning/thin_show_duplicates.cc \
 	thin-provisioning/thin_trim.cc \
 	thin-provisioning/xml_format.cc
 
@@ -176,6 +177,7 @@ install: bin/pdata_tools
 	ln -s -f pdata_tools $(BINDIR)/thin_repair
 	ln -s -f pdata_tools $(BINDIR)/thin_restore
 	ln -s -f pdata_tools $(BINDIR)/thin_rmap
+	ln -s -f pdata_tools $(BINDIR)/thin_show_duplicates
 	ln -s -f pdata_tools $(BINDIR)/thin_trim
 	ln -s -f pdata_tools $(BINDIR)/thin_metadata_size
 	ln -s -f pdata_tools $(BINDIR)/era_check

bin/thin_show_duplicates

@@ -0,0 +1 @@
+pdata_tools

main.cc

@@ -32,6 +32,7 @@ int main(int argc, char **argv)
 	app.add_cmd(thin_provisioning::thin_restore_cmd);
 	app.add_cmd(thin_provisioning::thin_repair_cmd);
 	app.add_cmd(thin_provisioning::thin_rmap_cmd);
+	app.add_cmd(thin_provisioning::thin_show_dups_cmd);
 
 	// FIXME: convert thin_metadata_size to c++
 	//app.add_cmd(thin_provisioning::thin_metadata_size_cmd);

thin-provisioning/commands.h

@@ -15,6 +15,7 @@ namespace thin_provisioning {
 	extern base::command thin_rmap_cmd;
 	extern base::command thin_trim_cmd;
 	extern base::command thin_metadata_size_cmd;
+	extern base::command thin_show_dups_cmd;
 }
 
 //----------------------------------------------------------------

thin-provisioning/thin_show_duplicates.cc

@@ -0,0 +1,111 @@
+// Copyright (C) 2015 Red Hat, Inc. All rights reserved.
+//
+// This file is part of the thin-provisioning-tools source.
+//
+// thin-provisioning-tools is free software: you can redistribute it
+// and/or modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation, either version 3 of
+// the License, or (at your option) any later version.
+//
+// thin-provisioning-tools is distributed in the hope that it will be
+// useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with thin-provisioning-tools.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+#include <iostream>
+#include <getopt.h>
+#include <libgen.h>
+
+#include "version.h"
+
+#include "base/application.h"
+#include "base/error_state.h"
+#include "persistent-data/file_utils.h"
+#include "persistent-data/space-maps/core.h"
+#include "persistent-data/space-maps/disk.h"
+#include "thin-provisioning/commands.h"
+#include "thin-provisioning/device_tree.h"
+#include "thin-provisioning/mapping_tree.h"
+#include "thin-provisioning/superblock.h"
+
+using namespace base;
+using namespace std;
+using namespace thin_provisioning;
+
+//----------------------------------------------------------------
+
+namespace {
+	block_manager<>::ptr
+	open_bm(string const &path) {
+		block_address nr_blocks = get_nr_blocks(path);
+		block_manager<>::mode m = block_manager<>::READ_ONLY;
+		return block_manager<>::ptr(new block_manager<>(path, nr_blocks, 1, m));
+	}
+
+	transaction_manager::ptr
+	open_tm(block_manager<>::ptr bm) {
+		space_map::ptr sm(new core_map(bm->get_nr_blocks()));
+		sm->inc(superblock_detail::SUPERBLOCK_LOCATION);
+		transaction_manager::ptr tm(new transaction_manager(bm, sm));
+		return tm;
+	}
+
+	//--------------------------------
+
+	struct flags {
+		flags() {
+		}
+	};
+
+	void usage(ostream &out, string const &cmd) {
+		out << "Usage: " << cmd << " [options] {device|file}" << endl
+		    << "Options:" << endl
+		    << "  {-h|--help}" << endl
+		    << "  {-V|--version}" << endl;
+	}
+}
+
+int thin_show_dups_main(int argc, char **argv)
+{
+	int c;
+	flags fs;
+
+	char const shortopts[] = "qhV";
+	option const longopts[] = {
+		{ "help", no_argument, NULL, 'h'},
+		{ "version", no_argument, NULL, 'V'},
+		{ NULL, no_argument, NULL, 0 }
+	};
+
+	while ((c = getopt_long(argc, argv, shortopts, longopts, NULL)) != -1) {
+		switch(c) {
+		case 'h':
+			usage(cout, basename(argv[0]));
+			return 0;
+
+		case 'V':
+			cout << THIN_PROVISIONING_TOOLS_VERSION << endl;
+			return 0;
+
+		default:
+			usage(cerr, basename(argv[0]));
+			return 1;
+		}
+	}
+
+	if (argc == optind) {
+		cerr << "No input file provided." << endl;
+		usage(cerr, basename(argv[0]));
+		exit(1);
+	}
+
+	return 0;
+}
+
+base::command thin_provisioning::thin_show_dups_cmd("thin_show_duplicates", thin_show_dups_main);
+
+//----------------------------------------------------------------