141 lines
3.5 KiB
C++
141 lines
3.5 KiB
C++
// Copyright (C) 2011 Red Hat, Inc. All rights reserved.
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//
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// This file is part of the thin-provisioning-tools source.
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//
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// thin-provisioning-tools is free software: you can redistribute it
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// and/or modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation, either version 3 of
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// the License, or (at your option) any later version.
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//
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// thin-provisioning-tools is distributed in the hope that it will be
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// useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with thin-provisioning-tools. If not, see
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// <http://www.gnu.org/licenses/>.
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#include <fstream>
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#include <iostream>
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#include <getopt.h>
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#include <libgen.h>
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#include "human_readable_format.h"
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#include "metadata_dumper.h"
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#include "metadata.h"
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#include "xml_format.h"
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#include "version.h"
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using namespace persistent_data;
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using namespace std;
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using namespace thin_provisioning;
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namespace {
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int dump(string const &path, ostream &out, string const &format, bool repair,
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block_address metadata_snap = 0) {
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try {
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metadata::ptr md(metadata_snap ? new metadata(path, metadata_snap) : new metadata(path, metadata::OPEN, 0, 0));
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emitter::ptr e;
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if (format == "xml")
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e = create_xml_emitter(out);
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else if (format == "human_readable")
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e = create_human_readable_emitter(out);
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else {
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cerr << "unknown format '" << format << "'" << endl;
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exit(1);
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}
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metadata_dump(md, e, repair);
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} catch (std::exception &e) {
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cerr << e.what() << endl;
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return 1;
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}
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return 0;
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}
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void usage(ostream &out, string const &cmd) {
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out << "Usage: " << cmd << " [options] {device|file}" << endl
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<< "Options:" << endl
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<< " {-h|--help}" << endl
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<< " {-f|--format} {xml|human_readable}" << endl
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<< " {-r|--repair}" << endl
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<< " {-m|--metadata-snap} block#" << endl
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<< " {-o <xml file>}" << endl
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<< " {-V|--version}" << endl;
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}
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}
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int main(int argc, char **argv)
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{
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int c;
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bool repair = false;
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char const *output = NULL;
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const char shortopts[] = "hm:o:f:rV";
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string format = "xml";
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block_address metadata_snap = 0;
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char *end_ptr;
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const struct option longopts[] = {
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{ "help", no_argument, NULL, 'h'},
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{ "metadata-snap", required_argument, NULL, 'm' },
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{ "output", required_argument, NULL, 'o'},
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{ "format", required_argument, NULL, 'f' },
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{ "repair", no_argument, NULL, 'r'},
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{ "version", no_argument, NULL, 'V'},
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{ NULL, no_argument, NULL, 0 }
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};
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while ((c = getopt_long(argc, argv, shortopts, longopts, NULL)) != -1) {
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switch(c) {
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case 'h':
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usage(cout, basename(argv[0]));
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return 0;
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case 'f':
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format = optarg;
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break;
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case 'r':
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repair = true;
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break;
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case 'm':
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metadata_snap = strtoull(optarg, &end_ptr, 10);
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if (end_ptr == optarg) {
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cerr << "couldn't parse <metadata_snap>" << endl;
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usage(cerr, basename(argv[0]));
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return 1;
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}
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break;
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case 'o':
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output = optarg;
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break;
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case 'V':
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cout << THIN_PROVISIONING_TOOLS_VERSION << endl;
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return 0;
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default:
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usage(cerr, basename(argv[0]));
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return 1;
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}
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}
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if (argc == optind) {
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cerr << "No input file provided." << endl;
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usage(cerr, basename(argv[0]));
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return 1;
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}
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if (output) {
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ofstream out(output);
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return dump(argv[optind], out, format, repair, metadata_snap);
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} else
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return dump(argv[optind], cout, format, repair, metadata_snap);
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}
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