/*** This file is part of systemd. Copyright 2010 Lennart Poettering systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <errno.h> #include <getopt.h> #include <stdio.h> #include <stdlib.h> #include "log.h" #include "machine-id-setup.h" #include "path-util.h" #include "util.h" static char *arg_root = NULL; static bool arg_commit = false; static void help(void) { printf("%s [OPTIONS...]\n\n" "Initialize /etc/machine-id from a random source.\n\n" " -h --help Show this help\n" " --version Show package version\n" " --root=ROOT Filesystem root\n" " --commit Commit transient ID\n" , program_invocation_short_name); } static int parse_argv(int argc, char *argv[]) { enum { ARG_VERSION = 0x100, ARG_ROOT, ARG_COMMIT, }; static const struct option options[] = { { "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, ARG_VERSION }, { "root", required_argument, NULL, ARG_ROOT }, { "commit", no_argument, NULL, ARG_COMMIT }, {} }; int c, r; assert(argc >= 0); assert(argv); while ((c = getopt_long(argc, argv, "hqcv", options, NULL)) >= 0) switch (c) { case 'h': help(); return 0; case ARG_VERSION: return version(); case ARG_ROOT: r = parse_path_argument_and_warn(optarg, true, &arg_root); if (r < 0) return r; break; case ARG_COMMIT: arg_commit = true; break; case '?': return -EINVAL; default: assert_not_reached("Unhandled option"); } if (optind < argc) { log_error("Extraneous arguments"); return -EINVAL; } return 1; } int main(int argc, char *argv[]) { int r; log_parse_environment(); log_open(); r = parse_argv(argc, argv); if (r <= 0) goto finish; if (arg_commit) r = machine_id_commit(arg_root); else r = machine_id_setup(arg_root, SD_ID128_NULL); finish: free(arg_root); return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; }