128 lines
2.9 KiB
C++
128 lines
2.9 KiB
C++
#include <iostream>
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#include <getopt.h>
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#include <libgen.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 "caching/commands.h"
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#include "caching/metadata.h"
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#include "caching/metadata_dump.h"
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#include "caching/restore_emitter.h"
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#include "persistent-data/file_utils.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 caching;
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//----------------------------------------------------------------
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namespace {
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metadata::ptr open_metadata_for_read(string const &path) {
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block_manager::ptr bm = open_bm(path, block_manager::READ_ONLY);
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return metadata::ptr(new metadata(bm));
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}
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emitter::ptr output_emitter(string const &path) {
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block_manager::ptr bm = open_bm(path, block_manager::READ_WRITE);
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metadata::ptr md(new metadata(bm, metadata::CREATE));
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return create_restore_emitter(md, true);
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}
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int repair(string const &old_path, string const &new_path) {
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bool metadata_touched = false;
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try {
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file_utils::check_file_exists(new_path, false);
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metadata_touched = true;
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metadata_dump(open_metadata_for_read(old_path),
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output_emitter(new_path),
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true);
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} catch (std::exception &e) {
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if (metadata_touched)
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file_utils::zero_superblock(new_path);
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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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}
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//----------------------------------------------------------------
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cache_repair_cmd::cache_repair_cmd()
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: command("cache_repair")
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{
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}
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void
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cache_repair_cmd::usage(std::ostream &out) const
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{
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out << "Usage: " << get_name() << " [options] {device|file}" << endl
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<< "Options:" << endl
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<< " {-h|--help}" << endl
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<< " {-i|--input} <input metadata (binary format)>" << endl
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<< " {-o|--output} <output metadata (binary format)>" << endl
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<< " {-V|--version}" << endl;
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}
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int
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cache_repair_cmd::run(int argc, char **argv)
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{
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int c;
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boost::optional<string> input_path, output_path;
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const char shortopts[] = "hi:o:V";
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const struct option longopts[] = {
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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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{ "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);
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return 0;
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case 'i':
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input_path = optarg;
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break;
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case 'o':
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output_path = 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);
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return 1;
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}
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}
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if (!input_path) {
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cerr << "no input file provided" << endl;
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usage(cerr);
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return 1;
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}
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if (output_path)
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check_output_file_requirements(*output_path);
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else {
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cerr << "No output file provided." << endl;
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usage(cerr);
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return 1;
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}
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return repair(*input_path, *output_path);
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}
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//----------------------------------------------------------------
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