167 lines
3.7 KiB
C++
167 lines
3.7 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 <iostream>
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#include <sstream>
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#include <string>
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#include <stdexcept>
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#include <errno.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <libgen.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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using namespace std;
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//----------------------------------------------------------------
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namespace {
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struct stat guarded_stat(string const &path) {
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struct stat info;
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int r = ::stat(path.c_str(), &info);
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if (r) {
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ostringstream msg;
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char buffer[128], *ptr;
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ptr = ::strerror_r(errno, buffer, sizeof(buffer));
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msg << path << ": " << ptr;
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throw runtime_error(msg.str());
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}
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return info;
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}
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int open_file(string const &path, int mode) {
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int fd = open(path.c_str(), mode);
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if (fd < 0) {
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ostringstream msg;
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char buffer[128], *ptr;
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ptr = strerror_r(errno, buffer, sizeof(buffer));
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msg << path << ": " << ptr;
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throw runtime_error(msg.str());
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}
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return fd;
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}
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int check(string const &path, bool quiet) {
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struct stat info = guarded_stat(path);
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if (!S_ISREG(info.st_mode) && !S_ISBLK(info.st_mode)) {
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ostringstream msg;
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msg << path << ": " << "Not a block device or regular file";
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throw runtime_error(msg.str());
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}
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int fd = open_file(path, O_RDONLY);
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ostringstream msg;
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msg << path << ": " << "No superblock found";
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throw runtime_error(msg.str());
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return 0;
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#if 0
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try {
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metadata::ptr md(new metadata(path, metadata::OPEN));
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optional<error_set::ptr> maybe_errors = metadata_check(md);
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if (maybe_errors) {
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if (!quiet)
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cerr << error_selector(*maybe_errors, 3);
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return 1;
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}
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} catch (std::exception &e) {
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if (!quiet)
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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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#endif
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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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<< " {-q|--quiet}" << endl
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<< " {-h|--help}" << endl
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<< " {-V|--version}" << endl;
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}
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char const *TOOLS_VERSION = "0.1.6";
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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 quiet = false;
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const char shortopts[] = "qhV";
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const struct option longopts[] = {
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{ "quiet", no_argument, NULL, 'q'},
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{ "help", no_argument, NULL, 'h'},
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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 'q':
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quiet = true;
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break;
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case 'V':
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cout << 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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try {
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check(argv[optind], quiet);
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} catch (exception const &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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//----------------------------------------------------------------
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