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d7ccca2e LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
d7ccca2e LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
d7ccca2e | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
d7ccca2e LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
984bf931 | 22 | #include <errno.h> |
3f6fd1ba LP |
23 | #include <getopt.h> |
24 | #include <stdio.h> | |
25 | #include <stdlib.h> | |
d7ccca2e | 26 | |
d7ccca2e | 27 | #include "log.h" |
3f6fd1ba | 28 | #include "machine-id-setup.h" |
0f03c2a4 | 29 | #include "path-util.h" |
cf0fbc49 | 30 | #include "util.h" |
984bf931 | 31 | |
0f03c2a4 | 32 | static char *arg_root = NULL; |
4a9b1dd4 | 33 | static bool arg_commit = false; |
92f2f92e | 34 | |
601185b4 | 35 | static void help(void) { |
984bf931 LP |
36 | printf("%s [OPTIONS...]\n\n" |
37 | "Initialize /etc/machine-id from a random source.\n\n" | |
38 | " -h --help Show this help\n" | |
92f2f92e | 39 | " --version Show package version\n" |
4a9b1dd4 LP |
40 | " --root=ROOT Filesystem root\n" |
41 | " --commit Commit transient ID\n" | |
42 | , program_invocation_short_name); | |
984bf931 LP |
43 | } |
44 | ||
45 | static int parse_argv(int argc, char *argv[]) { | |
46 | ||
47 | enum { | |
92f2f92e GKH |
48 | ARG_VERSION = 0x100, |
49 | ARG_ROOT, | |
4a9b1dd4 | 50 | ARG_COMMIT, |
984bf931 LP |
51 | }; |
52 | ||
53 | static const struct option options[] = { | |
54 | { "help", no_argument, NULL, 'h' }, | |
55 | { "version", no_argument, NULL, ARG_VERSION }, | |
92f2f92e | 56 | { "root", required_argument, NULL, ARG_ROOT }, |
4a9b1dd4 | 57 | { "commit", no_argument, NULL, ARG_COMMIT }, |
eb9da376 | 58 | {} |
984bf931 LP |
59 | }; |
60 | ||
0f03c2a4 | 61 | int c, r; |
984bf931 LP |
62 | |
63 | assert(argc >= 0); | |
64 | assert(argv); | |
65 | ||
601185b4 | 66 | while ((c = getopt_long(argc, argv, "hqcv", options, NULL)) >= 0) |
984bf931 LP |
67 | |
68 | switch (c) { | |
69 | ||
70 | case 'h': | |
601185b4 ZJS |
71 | help(); |
72 | return 0; | |
984bf931 LP |
73 | |
74 | case ARG_VERSION: | |
3f6fd1ba | 75 | return version(); |
984bf931 | 76 | |
92f2f92e | 77 | case ARG_ROOT: |
0f03c2a4 LP |
78 | r = parse_path_argument_and_warn(optarg, true, &arg_root); |
79 | if (r < 0) | |
80 | return r; | |
92f2f92e GKH |
81 | break; |
82 | ||
4a9b1dd4 LP |
83 | case ARG_COMMIT: |
84 | arg_commit = true; | |
85 | break; | |
86 | ||
984bf931 LP |
87 | case '?': |
88 | return -EINVAL; | |
89 | ||
90 | default: | |
eb9da376 | 91 | assert_not_reached("Unhandled option"); |
984bf931 | 92 | } |
984bf931 LP |
93 | |
94 | if (optind < argc) { | |
fe970a8a | 95 | log_error("Extraneous arguments"); |
984bf931 LP |
96 | return -EINVAL; |
97 | } | |
98 | ||
99 | return 1; | |
100 | } | |
d7ccca2e LP |
101 | |
102 | int main(int argc, char *argv[]) { | |
984bf931 | 103 | int r; |
d7ccca2e | 104 | |
d7ccca2e LP |
105 | log_parse_environment(); |
106 | log_open(); | |
107 | ||
984bf931 LP |
108 | r = parse_argv(argc, argv); |
109 | if (r <= 0) | |
0f03c2a4 | 110 | goto finish; |
984bf931 | 111 | |
4a9b1dd4 LP |
112 | if (arg_commit) |
113 | r = machine_id_commit(arg_root); | |
114 | else | |
ee48dbd5 | 115 | r = machine_id_setup(arg_root, SD_ID128_NULL); |
4a9b1dd4 | 116 | |
0f03c2a4 LP |
117 | finish: |
118 | free(arg_root); | |
4a9b1dd4 | 119 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
d7ccca2e | 120 | } |