f6eb5173c9
The output file has been checked by the caller, so there's no need to check the output file again.
147 lines
2.9 KiB
C++
147 lines
2.9 KiB
C++
#include "version.h"
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#include "base/file_utils.h"
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#include "base/output_file_requirements.h"
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#include "era/commands.h"
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#include "era/metadata.h"
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#include "era/restore_emitter.h"
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#include "era/xml_format.h"
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#include "persistent-data/file_utils.h"
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#include <boost/lexical_cast.hpp>
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#include <fstream>
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#include <getopt.h>
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#include <iostream>
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#include <libgen.h>
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#include <string>
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using namespace boost;
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using namespace era;
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using namespace persistent_data;
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using namespace std;
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//----------------------------------------------------------------
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namespace {
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struct flags {
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flags()
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: quiet(false) {
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}
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optional<string> input;
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optional<string> output;
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bool quiet;
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};
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int restore(flags const &fs, bool quiet) {
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bool metadata_touched = false;
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try {
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block_manager::ptr bm = open_bm(*fs.output, block_manager::READ_WRITE);
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file_utils::check_file_exists(*fs.input);
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metadata_touched = true;
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metadata::ptr md(new metadata(bm, metadata::CREATE));
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emitter::ptr restorer = create_restore_emitter(*md);
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parse_xml(*fs.input, restorer, fs.quiet);
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} catch (std::exception &e) {
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cerr << e.what() << endl;
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if (metadata_touched)
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try {
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file_utils::zero_superblock(*fs.output);
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} catch (...) {
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}
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return 1;
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}
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return 0;
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}
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}
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//----------------------------------------------------------------
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era_restore_cmd::era_restore_cmd()
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: command("era_restore")
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{
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}
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void
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era_restore_cmd::usage(std::ostream &out) const
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{
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out << "Usage: " << get_name() << " [options]" << endl
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<< "Options:" << endl
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<< " {-h|--help}" << endl
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<< " {-i|--input} <input xml file>" << endl
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<< " {-o|--output} <output device or file>" << endl
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<< " {-q|--quiet}" << endl
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<< " {-V|--version}" << endl;
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}
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int
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era_restore_cmd::run(int argc, char **argv)
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{
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int c;
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flags fs;
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char const *short_opts = "hi:o:qV";
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option const long_opts[] = {
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{ "help", no_argument, NULL, 'h'},
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{ "input", required_argument, NULL, 'i' },
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{ "output", required_argument, NULL, 'o'},
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{ "quiet", no_argument, NULL, 'q'},
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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, short_opts, long_opts, NULL)) != -1) {
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switch(c) {
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case 'h':
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usage(cout);
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return 0;
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case 'i':
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fs.input = optional<string>(string(optarg));
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break;
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case 'o':
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fs.output = optional<string>(string(optarg));
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break;
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case 'q':
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fs.quiet = true;
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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);
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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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usage(cerr);
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return 1;
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}
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if (!fs.input) {
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cerr << "No input file provided." << endl << endl;
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usage(cerr);
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return 1;
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}
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if (fs.output)
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check_output_file_requirements(*fs.output);
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else {
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cerr << "No output file provided." << endl << endl;
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usage(cerr);
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return 1;
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}
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return restore(fs, fs.quiet);
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}
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//----------------------------------------------------------------
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