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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Kay Sievers | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
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 | |
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 | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <stdlib.h> | |
23 | #include <stdbool.h> | |
24 | #include <unistd.h> | |
25 | #include <getopt.h> | |
26 | #include <locale.h> | |
27 | #include <string.h> | |
28 | #include <sys/timex.h> | |
29 | ||
30 | #include "boot.h" | |
31 | #include "build.h" | |
32 | #include "util.h" | |
33 | #include "utf8.h" | |
34 | ||
35 | static int help(void) { | |
60f067b4 | 36 | |
663996b3 | 37 | printf("%s [OPTIONS...] COMMAND ...\n\n" |
60f067b4 | 38 | "Query or change firmware and boot manager settings.\n\n" |
663996b3 MS |
39 | " -h --help Show this help\n" |
40 | " --version Show package version\n" | |
41 | "Commands:\n" | |
42 | " status Show current boot settings\n", | |
43 | program_invocation_short_name); | |
44 | ||
45 | return 0; | |
46 | } | |
47 | ||
48 | static int parse_argv(int argc, char *argv[]) { | |
49 | enum { | |
50 | ARG_VERSION = 0x100, | |
51 | }; | |
52 | ||
53 | static const struct option options[] = { | |
54 | { "help", no_argument, NULL, 'h' }, | |
55 | { "version", no_argument, NULL, ARG_VERSION }, | |
60f067b4 | 56 | {} |
663996b3 MS |
57 | }; |
58 | ||
59 | int c; | |
60 | ||
61 | assert(argc >= 0); | |
62 | assert(argv); | |
60f067b4 JS |
63 | |
64 | while ((c = getopt_long(argc, argv, "+h", options, NULL)) >= 0) { | |
663996b3 MS |
65 | |
66 | switch (c) { | |
67 | ||
68 | case 'h': | |
60f067b4 | 69 | return help(); |
663996b3 MS |
70 | |
71 | case ARG_VERSION: | |
72 | puts(PACKAGE_STRING); | |
73 | puts(SYSTEMD_FEATURES); | |
74 | return 0; | |
75 | ||
76 | case '?': | |
77 | return -EINVAL; | |
78 | ||
79 | default: | |
60f067b4 | 80 | assert_not_reached("Unhandled option"); |
663996b3 MS |
81 | } |
82 | } | |
83 | ||
84 | return 1; | |
85 | } | |
86 | ||
87 | static int boot_info_new(struct boot_info **info) { | |
88 | struct boot_info *in; | |
89 | int err; | |
90 | ||
91 | in = new0(struct boot_info, 1); | |
92 | if (!in) | |
93 | return -ENOMEM; | |
94 | ||
95 | err = sd_id128_get_machine(&in->machine_id); | |
96 | if (err < 0) | |
97 | goto err; | |
98 | ||
99 | err = sd_id128_get_boot(&in->boot_id); | |
100 | if (err < 0) | |
101 | goto err; | |
102 | ||
103 | in->fw_entry_active = -1; | |
104 | in->loader_entry_active = -1; | |
105 | ||
106 | *info = in; | |
107 | return 0; | |
108 | err: | |
109 | free(in); | |
110 | return err; | |
111 | } | |
112 | ||
113 | static void boot_info_entries_free(struct boot_info_entry *entries, size_t n) { | |
114 | size_t i; | |
115 | ||
116 | for (i = 0; i < n; i++) { | |
117 | free(entries[i].title); | |
118 | free(entries[i].path); | |
119 | } | |
120 | free(entries); | |
121 | } | |
122 | ||
123 | static void boot_info_free(struct boot_info *info) { | |
124 | free(info->fw_type); | |
125 | free(info->fw_info); | |
126 | boot_info_entries_free(info->fw_entries, info->fw_entries_count); | |
127 | free(info->fw_entries_order); | |
128 | free(info->loader); | |
129 | free(info->loader_image_path); | |
130 | free(info->loader_options_added); | |
131 | boot_info_entries_free(info->loader_entries, info->loader_entries_count); | |
132 | free(info); | |
133 | } | |
134 | ||
135 | static int show_status(char **args, unsigned n) { | |
136 | char buf[64]; | |
137 | struct boot_info *info; | |
138 | int err; | |
139 | ||
140 | err = boot_info_new(&info); | |
141 | if (err < 0) | |
142 | return -ENOMEM; | |
143 | ||
144 | err = boot_info_query(info); | |
145 | ||
146 | printf("System:\n"); | |
147 | printf(" Machine ID: %s\n", sd_id128_to_string(info->machine_id, buf)); | |
148 | printf(" Boot ID: %s\n", sd_id128_to_string(info->boot_id, buf)); | |
149 | if (info->fw_type) | |
150 | printf(" Firmware: %s (%s)\n", info->fw_type, strna(info->fw_info)); | |
151 | if (info->fw_secure_boot >= 0) | |
152 | printf(" Secure Boot: %s\n", info->fw_secure_boot ? "enabled" : "disabled"); | |
153 | if (info->fw_secure_boot_setup_mode >= 0) | |
154 | printf(" Setup Mode: %s\n", info->fw_secure_boot_setup_mode ? "setup" : "user"); | |
155 | printf("\n"); | |
156 | ||
157 | if (info->fw_entry_active >= 0) { | |
158 | printf("Selected Firmware Entry:\n"); | |
159 | printf(" Title: %s\n", strna(info->fw_entries[info->fw_entry_active].title)); | |
160 | if (!sd_id128_equal(info->fw_entries[info->fw_entry_active].part_uuid, SD_ID128_NULL)) | |
161 | printf(" Partition: /dev/disk/by-partuuid/%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n", | |
162 | SD_ID128_FORMAT_VAL(info->fw_entries[info->fw_entry_active].part_uuid)); | |
163 | else | |
164 | printf(" Partition: n/a\n"); | |
165 | if (info->fw_entries[info->fw_entry_active].path) | |
166 | printf(" File: %s%s\n", draw_special_char(DRAW_TREE_RIGHT), info->fw_entries[info->fw_entry_active].path); | |
167 | } | |
168 | printf("\n"); | |
169 | ||
170 | if (info->loader) { | |
171 | printf("Boot Loader:\n"); | |
172 | printf(" Product: %s\n", info->loader); | |
173 | if (!sd_id128_equal(info->loader_part_uuid, SD_ID128_NULL)) | |
174 | printf(" Partition: /dev/disk/by-partuuid/%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n", | |
175 | SD_ID128_FORMAT_VAL(info->loader_part_uuid)); | |
176 | else | |
177 | printf(" Partition: n/a\n"); | |
178 | printf(" File: %s%s\n", draw_special_char(DRAW_TREE_RIGHT), strna(info->loader_image_path)); | |
179 | printf("\n"); | |
180 | ||
181 | if (info->loader_entry_active >= 0) { | |
182 | printf("Selected Boot Loader Entry:\n"); | |
183 | printf(" Title: %s\n", strna(info->loader_entries[info->loader_entry_active].title)); | |
184 | printf(" File: %s\n", info->loader_entries[info->loader_entry_active].path); | |
185 | if (info->loader_options_added) | |
186 | printf(" Options: %s\n", info->loader_options_added); | |
187 | } | |
188 | } else | |
189 | printf("No suitable data is provided by the boot manager. See:\n" | |
190 | " http://www.freedesktop.org/wiki/Software/systemd/BootLoaderInterface\n" | |
191 | " http://www.freedesktop.org/wiki/Specifications/BootLoaderSpec\n" | |
192 | "for details.\n"); | |
193 | printf("\n"); | |
194 | ||
195 | boot_info_free(info); | |
196 | return err; | |
197 | } | |
198 | ||
199 | static int bootctl_main(int argc, char *argv[]) { | |
200 | static const struct { | |
201 | const char* verb; | |
202 | const enum { | |
203 | MORE, | |
204 | LESS, | |
205 | EQUAL | |
206 | } argc_cmp; | |
207 | const int argc; | |
208 | int (* const dispatch)(char **args, unsigned n); | |
209 | } verbs[] = { | |
210 | { "status", LESS, 1, show_status }, | |
211 | }; | |
212 | ||
213 | int left; | |
214 | unsigned i; | |
215 | ||
216 | assert(argc >= 0); | |
217 | assert(argv); | |
218 | ||
219 | left = argc - optind; | |
220 | ||
221 | if (left <= 0) | |
222 | /* Special rule: no arguments means "status" */ | |
223 | i = 0; | |
224 | else { | |
225 | if (streq(argv[optind], "help")) { | |
226 | help(); | |
227 | return 0; | |
228 | } | |
229 | ||
230 | for (i = 0; i < ELEMENTSOF(verbs); i++) | |
231 | if (streq(argv[optind], verbs[i].verb)) | |
232 | break; | |
233 | ||
234 | if (i >= ELEMENTSOF(verbs)) { | |
235 | log_error("Unknown operation %s", argv[optind]); | |
236 | return -EINVAL; | |
237 | } | |
238 | } | |
239 | ||
240 | switch (verbs[i].argc_cmp) { | |
241 | ||
242 | case EQUAL: | |
243 | if (left != verbs[i].argc) { | |
244 | log_error("Invalid number of arguments."); | |
245 | return -EINVAL; | |
246 | } | |
247 | break; | |
248 | ||
249 | case MORE: | |
250 | if (left < verbs[i].argc) { | |
251 | log_error("Too few arguments."); | |
252 | return -EINVAL; | |
253 | } | |
254 | break; | |
255 | ||
256 | case LESS: | |
257 | if (left > verbs[i].argc) { | |
258 | log_error("Too many arguments."); | |
259 | return -EINVAL; | |
260 | } | |
261 | break; | |
262 | ||
263 | default: | |
264 | assert_not_reached("Unknown comparison operator."); | |
265 | } | |
266 | ||
267 | return verbs[i].dispatch(argv + optind, left); | |
268 | } | |
269 | ||
270 | int main(int argc, char *argv[]) { | |
271 | int r, retval = EXIT_FAILURE; | |
272 | ||
273 | log_parse_environment(); | |
274 | log_open(); | |
275 | ||
276 | r = parse_argv(argc, argv); | |
277 | if (r < 0) | |
278 | goto finish; | |
279 | else if (r == 0) { | |
280 | retval = EXIT_SUCCESS; | |
281 | goto finish; | |
282 | } | |
283 | ||
284 | r = bootctl_main(argc, argv); | |
285 | retval = r < 0 ? EXIT_FAILURE : r; | |
286 | finish: | |
287 | return retval; | |
288 | } |