thin-provisioning-tools/thin_restore.cc

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// Copyright (C) 20011 Red Hat, Inc. All rights reserved.
//
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// 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 "emitter.h"
#include "human_readable_format.h"
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#include "metadata.h"
#include "restore_emitter.h"
#include "xml_format.h"
#include "version.h"
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#include <fstream>
#include <iostream>
#include <getopt.h>
#include <libgen.h>
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using namespace persistent_data;
using namespace std;
using namespace thin_provisioning;
//----------------------------------------------------------------
namespace {
void restore(string const &backup_file, string const &dev) {
// FIXME: hard coded
block_address const NR_BLOCKS = 100000;
metadata::ptr md(new metadata(dev, metadata::CREATE, 128, NR_BLOCKS));
emitter::ptr restorer = create_restore_emitter(md);
ifstream in(backup_file.c_str(), ifstream::in);
// FIXME:
//try {
parse_xml(in, restorer);
#if 0
} catch (...) {
in.close();
throw;
}
#endif
}
void usage(string const &cmd) {
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cerr << "Usage: " << cmd << " [options]" << endl << endl;
cerr << "Options:" << endl;
cerr << " {-h|--help}" << endl;
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cerr << " {-i|--input} input_file" << endl;
cerr << " {-o [ --output} {device|file}" << endl;
cerr << " {-V|--version}" << endl;
}
}
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int main(int argc, char **argv)
{
int c;
const char *shortopts = "hi:o:V";
string input, output;
const struct option longopts[] = {
{ "help", no_argument, NULL, 'h'},
{ "input", required_argument, NULL, 'i' },
{ "output", required_argument, NULL, 'o'},
{ "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(basename(argv[0]));
return 0;
case 'i':
input = optarg;
break;
case 'o':
output = optarg;
break;
case 'V':
cerr << THIN_PROVISIONING_TOOLS_VERSION << endl;
return 0;
}
}
if (argc == 1) {
usage(basename(argv[0]));
return 1;
}
if (input.empty()) {
cerr << "No input file provided." << endl;
return 1;
}
if (output.empty()) {
cerr << "No output file provided." << endl;
return 1;
}
restore(input, output);
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return 0;
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}
//----------------------------------------------------------------