]>
Commit | Line | Data |
---|---|---|
53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
d7ccca2e LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2010 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
8 | under the terms of the GNU Lesser General Public License as published by |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
d7ccca2e LP |
10 | (at your option) any later version. |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 15 | Lesser General Public License for more details. |
d7ccca2e | 16 | |
5430f7f2 | 17 | You should have received a copy of the GNU Lesser General Public License |
d7ccca2e LP |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
19 | ***/ | |
20 | ||
984bf931 | 21 | #include <errno.h> |
3f6fd1ba LP |
22 | #include <getopt.h> |
23 | #include <stdio.h> | |
24 | #include <stdlib.h> | |
d7ccca2e | 25 | |
a6f72863 | 26 | #include "id128-util.h" |
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; |
487ddeb8 | 34 | static bool arg_print = false; |
92f2f92e | 35 | |
601185b4 | 36 | static void help(void) { |
984bf931 LP |
37 | printf("%s [OPTIONS...]\n\n" |
38 | "Initialize /etc/machine-id from a random source.\n\n" | |
39 | " -h --help Show this help\n" | |
92f2f92e | 40 | " --version Show package version\n" |
4a9b1dd4 LP |
41 | " --root=ROOT Filesystem root\n" |
42 | " --commit Commit transient ID\n" | |
487ddeb8 | 43 | " --print Print used machine ID\n" |
4a9b1dd4 | 44 | , program_invocation_short_name); |
984bf931 LP |
45 | } |
46 | ||
47 | static int parse_argv(int argc, char *argv[]) { | |
48 | ||
49 | enum { | |
92f2f92e GKH |
50 | ARG_VERSION = 0x100, |
51 | ARG_ROOT, | |
4a9b1dd4 | 52 | ARG_COMMIT, |
487ddeb8 | 53 | ARG_PRINT, |
984bf931 LP |
54 | }; |
55 | ||
56 | static const struct option options[] = { | |
57 | { "help", no_argument, NULL, 'h' }, | |
58 | { "version", no_argument, NULL, ARG_VERSION }, | |
92f2f92e | 59 | { "root", required_argument, NULL, ARG_ROOT }, |
4a9b1dd4 | 60 | { "commit", no_argument, NULL, ARG_COMMIT }, |
487ddeb8 | 61 | { "print", no_argument, NULL, ARG_PRINT }, |
eb9da376 | 62 | {} |
984bf931 LP |
63 | }; |
64 | ||
0f03c2a4 | 65 | int c, r; |
984bf931 LP |
66 | |
67 | assert(argc >= 0); | |
68 | assert(argv); | |
69 | ||
601185b4 | 70 | while ((c = getopt_long(argc, argv, "hqcv", options, NULL)) >= 0) |
984bf931 LP |
71 | |
72 | switch (c) { | |
73 | ||
74 | case 'h': | |
601185b4 ZJS |
75 | help(); |
76 | return 0; | |
984bf931 LP |
77 | |
78 | case ARG_VERSION: | |
3f6fd1ba | 79 | return version(); |
984bf931 | 80 | |
92f2f92e | 81 | case ARG_ROOT: |
0f03c2a4 LP |
82 | r = parse_path_argument_and_warn(optarg, true, &arg_root); |
83 | if (r < 0) | |
84 | return r; | |
92f2f92e GKH |
85 | break; |
86 | ||
4a9b1dd4 LP |
87 | case ARG_COMMIT: |
88 | arg_commit = true; | |
89 | break; | |
90 | ||
487ddeb8 LP |
91 | case ARG_PRINT: |
92 | arg_print = true; | |
93 | break; | |
94 | ||
984bf931 LP |
95 | case '?': |
96 | return -EINVAL; | |
97 | ||
98 | default: | |
eb9da376 | 99 | assert_not_reached("Unhandled option"); |
984bf931 | 100 | } |
984bf931 LP |
101 | |
102 | if (optind < argc) { | |
fe970a8a | 103 | log_error("Extraneous arguments"); |
984bf931 LP |
104 | return -EINVAL; |
105 | } | |
106 | ||
107 | return 1; | |
108 | } | |
d7ccca2e LP |
109 | |
110 | int main(int argc, char *argv[]) { | |
487ddeb8 LP |
111 | char buf[SD_ID128_STRING_MAX]; |
112 | sd_id128_t id; | |
984bf931 | 113 | int r; |
d7ccca2e | 114 | |
d7ccca2e LP |
115 | log_parse_environment(); |
116 | log_open(); | |
117 | ||
984bf931 LP |
118 | r = parse_argv(argc, argv); |
119 | if (r <= 0) | |
0f03c2a4 | 120 | goto finish; |
984bf931 | 121 | |
487ddeb8 | 122 | if (arg_commit) { |
a6f72863 EV |
123 | const char *etc_machine_id; |
124 | ||
4a9b1dd4 | 125 | r = machine_id_commit(arg_root); |
487ddeb8 LP |
126 | if (r < 0) |
127 | goto finish; | |
128 | ||
a6f72863 EV |
129 | etc_machine_id = prefix_roota(arg_root, "/etc/machine-id"); |
130 | r = id128_read(etc_machine_id, ID128_PLAIN, &id); | |
487ddeb8 LP |
131 | if (r < 0) { |
132 | log_error_errno(r, "Failed to read machine ID back: %m"); | |
133 | goto finish; | |
134 | } | |
135 | } else { | |
136 | r = machine_id_setup(arg_root, SD_ID128_NULL, &id); | |
137 | if (r < 0) | |
138 | goto finish; | |
139 | } | |
140 | ||
141 | if (arg_print) | |
142 | puts(sd_id128_to_string(id, buf)); | |
4a9b1dd4 | 143 | |
0f03c2a4 LP |
144 | finish: |
145 | free(arg_root); | |
4a9b1dd4 | 146 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
d7ccca2e | 147 | } |