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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
7b4d7cc0 | 2 | |
6b5cf3ea | 3 | #include <blkid.h> |
0974a682 | 4 | #include <ctype.h> |
3f6fd1ba LP |
5 | #include <dirent.h> |
6 | #include <errno.h> | |
0974a682 | 7 | #include <ftw.h> |
3f6fd1ba LP |
8 | #include <getopt.h> |
9 | #include <limits.h> | |
5fa6c13c | 10 | #include <linux/magic.h> |
0974a682 | 11 | #include <stdbool.h> |
3f6fd1ba LP |
12 | #include <stdio.h> |
13 | #include <stdlib.h> | |
14 | #include <string.h> | |
15 | #include <sys/mman.h> | |
16 | #include <sys/stat.h> | |
17 | #include <sys/statfs.h> | |
18 | #include <unistd.h> | |
7b4d7cc0 | 19 | |
dccca82b LP |
20 | #include "sd-id128.h" |
21 | ||
b5efdb8a | 22 | #include "alloc-util.h" |
3f6fd1ba | 23 | #include "blkid-util.h" |
7e87c7d9 | 24 | #include "bootspec.h" |
175d308c | 25 | #include "copy.h" |
e41256dc | 26 | #include "dirent-util.h" |
0bb2f0f1 | 27 | #include "efi-loader.h" |
0974a682 | 28 | #include "efivars.h" |
e44c3229 | 29 | #include "env-util.h" |
9dae4c8a | 30 | #include "escape.h" |
3ffd4af2 | 31 | #include "fd-util.h" |
0d39fa9c | 32 | #include "fileio.h" |
175d308c | 33 | #include "fs-util.h" |
8752c575 | 34 | #include "locale-util.h" |
608f8ec9 | 35 | #include "main-func.h" |
57db6f18 | 36 | #include "pager.h" |
2f2c539c | 37 | #include "parse-util.h" |
294bf0c3 | 38 | #include "pretty-print.h" |
e44c3229 | 39 | #include "random-util.h" |
c6878637 | 40 | #include "rm-rf.h" |
175d308c | 41 | #include "stat-util.h" |
341890de | 42 | #include "stdio-util.h" |
07630cea | 43 | #include "string-util.h" |
2f2c539c | 44 | #include "strv.h" |
7e87c7d9 | 45 | #include "terminal-util.h" |
e4de7287 | 46 | #include "tmpfile-util.h" |
2f2c539c | 47 | #include "umask-util.h" |
d88c96ff | 48 | #include "utf8.h" |
3f6fd1ba | 49 | #include "util.h" |
2f2c539c LP |
50 | #include "verbs.h" |
51 | #include "virt.h" | |
7b4d7cc0 | 52 | |
fbf45d22 LP |
53 | static char *arg_esp_path = NULL; |
54 | static char *arg_xbootldr_path = NULL; | |
55 | static bool arg_print_esp_path = false; | |
56 | static bool arg_print_dollar_boot_path = false; | |
25579a43 | 57 | static bool arg_touch_variables = true; |
0221d68a | 58 | static PagerFlags arg_pager_flags = 0; |
25579a43 | 59 | |
fbf45d22 LP |
60 | STATIC_DESTRUCTOR_REGISTER(arg_esp_path, freep); |
61 | STATIC_DESTRUCTOR_REGISTER(arg_xbootldr_path, freep); | |
62 | ||
63 | static const char *arg_dollar_boot_path(void) { | |
64 | /* $BOOT shall be the XBOOTLDR partition if it exists, and otherwise the ESP */ | |
65 | return arg_xbootldr_path ?: arg_esp_path; | |
66 | } | |
608f8ec9 | 67 | |
5caa3167 LP |
68 | static int acquire_esp( |
69 | bool unprivileged_mode, | |
70 | uint32_t *ret_part, | |
71 | uint64_t *ret_pstart, | |
72 | uint64_t *ret_psize, | |
73 | sd_id128_t *ret_uuid) { | |
74 | ||
75 | char *np; | |
2f2c539c LP |
76 | int r; |
77 | ||
fbf45d22 LP |
78 | /* Find the ESP, and log about errors. Note that find_esp_and_warn() will log in all error cases on |
79 | * its own, except for ENOKEY (which is good, we want to show our own message in that case, | |
80 | * suggesting use of --esp-path=) and EACCESS (only when we request unprivileged mode; in this case | |
81 | * we simply eat up the error here, so that --list and --status work too, without noise about | |
82 | * this). */ | |
5caa3167 | 83 | |
fbf45d22 | 84 | r = find_esp_and_warn(arg_esp_path, unprivileged_mode, &np, ret_part, ret_pstart, ret_psize, ret_uuid); |
5caa3167 | 85 | if (r == -ENOKEY) |
af918182 | 86 | return log_error_errno(r, |
5caa3167 | 87 | "Couldn't find EFI system partition. It is recommended to mount it to /boot or /efi.\n" |
fbf45d22 | 88 | "Alternatively, use --esp-path= to specify path to mount point."); |
5caa3167 LP |
89 | if (r < 0) |
90 | return r; | |
91 | ||
fbf45d22 LP |
92 | free_and_replace(arg_esp_path, np); |
93 | log_debug("Using EFI System Partition at %s.", arg_esp_path); | |
94 | ||
95 | return 1; | |
96 | } | |
0974a682 | 97 | |
fbf45d22 LP |
98 | static int acquire_xbootldr(bool unprivileged_mode, sd_id128_t *ret_uuid) { |
99 | char *np; | |
100 | int r; | |
5caa3167 | 101 | |
fbf45d22 LP |
102 | r = find_xbootldr_and_warn(arg_xbootldr_path, unprivileged_mode, &np, ret_uuid); |
103 | if (r == -ENOKEY) { | |
104 | log_debug_errno(r, "Didn't find an XBOOTLDR partition, using the ESP as $BOOT."); | |
105 | if (ret_uuid) | |
106 | *ret_uuid = SD_ID128_NULL; | |
a2ae0d49 | 107 | arg_xbootldr_path = mfree(arg_xbootldr_path); |
fbf45d22 LP |
108 | return 0; |
109 | } | |
110 | if (r < 0) | |
111 | return r; | |
112 | ||
113 | free_and_replace(arg_xbootldr_path, np); | |
114 | log_debug("Using XBOOTLDR partition at %s as $BOOT.", arg_xbootldr_path); | |
115 | ||
116 | return 1; | |
7b4d7cc0 KS |
117 | } |
118 | ||
e7dd673d | 119 | /* search for "#### LoaderInfo: systemd-boot 218 ####" string inside the binary */ |
d3226d77 | 120 | static int get_file_version(int fd, char **v) { |
0974a682 KS |
121 | struct stat st; |
122 | char *buf; | |
123 | const char *s, *e; | |
124 | char *x = NULL; | |
125 | int r = 0; | |
7b4d7cc0 | 126 | |
d3226d77 | 127 | assert(fd >= 0); |
0974a682 | 128 | assert(v); |
7b4d7cc0 | 129 | |
d3226d77 | 130 | if (fstat(fd, &st) < 0) |
db6d9fae | 131 | return log_error_errno(errno, "Failed to stat EFI binary: %m"); |
7b4d7cc0 | 132 | |
c4ba5b51 LP |
133 | r = stat_verify_regular(&st); |
134 | if (r < 0) | |
d90f2add | 135 | return log_error_errno(r, "EFI binary is not a regular file: %m"); |
c4ba5b51 | 136 | |
db6d9fae LP |
137 | if (st.st_size < 27) { |
138 | *v = NULL; | |
0974a682 | 139 | return 0; |
db6d9fae | 140 | } |
eb9da376 | 141 | |
d3226d77 | 142 | buf = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0); |
0974a682 | 143 | if (buf == MAP_FAILED) |
db6d9fae | 144 | return log_error_errno(errno, "Failed to memory map EFI binary: %m"); |
7b4d7cc0 | 145 | |
0974a682 KS |
146 | s = memmem(buf, st.st_size - 8, "#### LoaderInfo: ", 17); |
147 | if (!s) | |
148 | goto finish; | |
149 | s += 17; | |
7b4d7cc0 | 150 | |
0974a682 KS |
151 | e = memmem(s, st.st_size - (s - buf), " ####", 5); |
152 | if (!e || e - s < 3) { | |
78d5d4ed | 153 | r = log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Malformed version string."); |
0974a682 KS |
154 | goto finish; |
155 | } | |
7b4d7cc0 | 156 | |
0974a682 KS |
157 | x = strndup(s, e - s); |
158 | if (!x) { | |
d3226d77 | 159 | r = log_oom(); |
0974a682 KS |
160 | goto finish; |
161 | } | |
162 | r = 1; | |
7b4d7cc0 | 163 | |
0974a682 | 164 | finish: |
db6d9fae | 165 | (void) munmap(buf, st.st_size); |
0974a682 KS |
166 | *v = x; |
167 | return r; | |
168 | } | |
7b4d7cc0 | 169 | |
0974a682 | 170 | static int enumerate_binaries(const char *esp_path, const char *path, const char *prefix) { |
d3226d77 | 171 | _cleanup_closedir_ DIR *d = NULL; |
0974a682 | 172 | struct dirent *de; |
270384b2 | 173 | const char *p; |
fbf45d22 | 174 | int c = 0, r; |
fbf45d22 LP |
175 | |
176 | assert(esp_path); | |
177 | assert(path); | |
0974a682 | 178 | |
270384b2 | 179 | p = prefix_roota(esp_path, path); |
0974a682 KS |
180 | d = opendir(p); |
181 | if (!d) { | |
d3226d77 ZJS |
182 | if (errno == ENOENT) |
183 | return 0; | |
7b4d7cc0 | 184 | |
d3226d77 | 185 | return log_error_errno(errno, "Failed to read \"%s\": %m", p); |
0974a682 KS |
186 | } |
187 | ||
e41256dc | 188 | FOREACH_DIRENT(de, d, break) { |
d3226d77 | 189 | _cleanup_free_ char *v = NULL; |
fbf45d22 | 190 | _cleanup_close_ int fd = -1; |
0974a682 | 191 | |
d3226d77 | 192 | if (!endswith_no_case(de->d_name, ".efi")) |
0974a682 KS |
193 | continue; |
194 | ||
d3226d77 | 195 | if (prefix && !startswith_no_case(de->d_name, prefix)) |
0974a682 KS |
196 | continue; |
197 | ||
d3226d77 ZJS |
198 | fd = openat(dirfd(d), de->d_name, O_RDONLY|O_CLOEXEC); |
199 | if (fd < 0) | |
200 | return log_error_errno(errno, "Failed to open \"%s/%s\" for reading: %m", p, de->d_name); | |
0974a682 | 201 | |
d3226d77 | 202 | r = get_file_version(fd, &v); |
0974a682 | 203 | if (r < 0) |
d3226d77 | 204 | return r; |
0974a682 | 205 | if (r > 0) |
9a6f746f | 206 | printf(" File: %s/%s/%s (%s%s%s)\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), path, de->d_name, ansi_highlight(), v, ansi_normal()); |
0974a682 | 207 | else |
9a6f746f | 208 | printf(" File: %s/%s/%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), path, de->d_name); |
fbf45d22 | 209 | |
0974a682 | 210 | c++; |
0974a682 KS |
211 | } |
212 | ||
d3226d77 | 213 | return c; |
7b4d7cc0 KS |
214 | } |
215 | ||
0974a682 KS |
216 | static int status_binaries(const char *esp_path, sd_id128_t partition) { |
217 | int r; | |
218 | ||
7fd66f3c | 219 | printf("Available Boot Loaders on ESP:\n"); |
0974a682 | 220 | |
cd2d4c7f YW |
221 | if (!esp_path) { |
222 | printf(" ESP: Cannot find or access mount point of ESP.\n\n"); | |
223 | return -ENOENT; | |
224 | } | |
225 | ||
226 | printf(" ESP: %s", esp_path); | |
227 | if (!sd_id128_is_null(partition)) | |
bd44566c | 228 | printf(" (/dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR ")", SD_ID128_FORMAT_VAL(partition)); |
cd2d4c7f | 229 | printf("\n"); |
0974a682 KS |
230 | |
231 | r = enumerate_binaries(esp_path, "EFI/systemd", NULL); | |
fbf45d22 | 232 | if (r < 0) |
882b3bd6 | 233 | goto finish; |
0974a682 | 234 | if (r == 0) |
48184e43 | 235 | log_info("systemd-boot not installed in ESP."); |
0974a682 | 236 | |
00f69504 | 237 | r = enumerate_binaries(esp_path, "EFI/BOOT", "boot"); |
fbf45d22 | 238 | if (r < 0) |
882b3bd6 | 239 | goto finish; |
0974a682 | 240 | if (r == 0) |
48184e43 | 241 | log_info("No default/fallback boot loader installed in ESP."); |
0974a682 | 242 | |
882b3bd6 | 243 | r = 0; |
c11ae0ba | 244 | |
882b3bd6 LP |
245 | finish: |
246 | printf("\n"); | |
247 | return r; | |
0974a682 KS |
248 | } |
249 | ||
250 | static int print_efi_option(uint16_t id, bool in_order) { | |
7cb0f263 TA |
251 | _cleanup_free_ char *title = NULL; |
252 | _cleanup_free_ char *path = NULL; | |
0974a682 KS |
253 | sd_id128_t partition; |
254 | bool active; | |
255 | int r = 0; | |
256 | ||
257 | r = efi_get_boot_option(id, &title, &partition, &path, &active); | |
258 | if (r < 0) | |
7cb0f263 | 259 | return r; |
7b4d7cc0 | 260 | |
0974a682 | 261 | /* print only configured entries with partition information */ |
3bbaff3e | 262 | if (!path || sd_id128_is_null(partition)) |
0974a682 KS |
263 | return 0; |
264 | ||
265 | efi_tilt_backslashes(path); | |
266 | ||
ba857253 | 267 | printf(" Title: %s%s%s\n", ansi_highlight(), strna(title), ansi_normal()); |
0974a682 KS |
268 | printf(" ID: 0x%04X\n", id); |
269 | printf(" Status: %sactive%s\n", active ? "" : "in", in_order ? ", boot-order" : ""); | |
bd44566c ZJS |
270 | printf(" Partition: /dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR "\n", |
271 | SD_ID128_FORMAT_VAL(partition)); | |
9a6f746f | 272 | printf(" File: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), path); |
0974a682 KS |
273 | printf("\n"); |
274 | ||
7cb0f263 | 275 | return 0; |
0974a682 KS |
276 | } |
277 | ||
278 | static int status_variables(void) { | |
d3226d77 | 279 | _cleanup_free_ uint16_t *options = NULL, *order = NULL; |
a36b411e | 280 | int n_options, n_order, i; |
0974a682 | 281 | |
0974a682 | 282 | n_options = efi_get_boot_options(&options); |
d3226d77 | 283 | if (n_options == -ENOENT) |
f939cff7 LP |
284 | return log_error_errno(n_options, |
285 | "Failed to access EFI variables, efivarfs" | |
d3226d77 | 286 | " needs to be available at /sys/firmware/efi/efivars/."); |
f939cff7 | 287 | if (n_options < 0) |
d3226d77 | 288 | return log_error_errno(n_options, "Failed to read EFI boot entries: %m"); |
0974a682 | 289 | |
0974a682 | 290 | n_order = efi_get_boot_order(&order); |
d3226d77 | 291 | if (n_order == -ENOENT) |
0974a682 | 292 | n_order = 0; |
d3226d77 | 293 | else if (n_order < 0) |
7709ef3a | 294 | return log_error_errno(n_order, "Failed to read EFI boot order: %m"); |
0974a682 KS |
295 | |
296 | /* print entries in BootOrder first */ | |
7fd66f3c | 297 | printf("Boot Loaders Listed in EFI Variables:\n"); |
0974a682 KS |
298 | for (i = 0; i < n_order; i++) |
299 | print_efi_option(order[i], true); | |
300 | ||
301 | /* print remaining entries */ | |
302 | for (i = 0; i < n_options; i++) { | |
303 | int j; | |
0974a682 KS |
304 | |
305 | for (j = 0; j < n_order; j++) | |
d3226d77 | 306 | if (options[i] == order[j]) |
a908cf0a | 307 | goto next_option; |
0974a682 KS |
308 | |
309 | print_efi_option(options[i], false); | |
a908cf0a MM |
310 | |
311 | next_option: | |
312 | continue; | |
0974a682 KS |
313 | } |
314 | ||
d3226d77 | 315 | return 0; |
0974a682 KS |
316 | } |
317 | ||
44e6a5ef ZJS |
318 | static int boot_entry_file_check(const char *root, const char *p) { |
319 | _cleanup_free_ char *path; | |
320 | ||
321 | path = path_join(root, p); | |
322 | if (!path) | |
323 | return log_oom(); | |
324 | ||
325 | if (access(path, F_OK) < 0) | |
326 | return -errno; | |
327 | ||
328 | return 0; | |
329 | } | |
330 | ||
d3eb6072 | 331 | static void boot_entry_file_list(const char *field, const char *root, const char *p, int *ret_status) { |
44e6a5ef ZJS |
332 | int status = boot_entry_file_check(root, p); |
333 | ||
405b104d | 334 | printf("%13s%s ", strempty(field), field ? ":" : " "); |
44e6a5ef ZJS |
335 | if (status < 0) { |
336 | errno = -status; | |
337 | printf("%s%s%s (%m)\n", ansi_highlight_red(), p, ansi_normal()); | |
338 | } else | |
339 | printf("%s\n", p); | |
d3eb6072 ZJS |
340 | |
341 | if (*ret_status == 0 && status < 0) | |
342 | *ret_status = status; | |
44e6a5ef ZJS |
343 | } |
344 | ||
20a28174 | 345 | static int boot_entry_show(const BootEntry *e, bool show_as_default) { |
d3eb6072 ZJS |
346 | int status = 0; |
347 | ||
348 | /* Returns 0 on success, negative on processing error, and positive if something is wrong with the | |
349 | boot entry itself. */ | |
350 | ||
20a28174 LP |
351 | assert(e); |
352 | ||
ce4c4f81 ZJS |
353 | printf(" title: %s%s%s" "%s%s%s\n", |
354 | ansi_highlight(), boot_entry_title(e), ansi_normal(), | |
355 | ansi_highlight_green(), show_as_default ? " (default)" : "", ansi_normal()); | |
20a28174 LP |
356 | |
357 | if (e->id) | |
358 | printf(" id: %s\n", e->id); | |
cce9457c ZJS |
359 | if (e->path) { |
360 | _cleanup_free_ char *link = NULL; | |
361 | ||
362 | /* Let's urlify the link to make it easy to view in an editor, but only if it is a text | |
363 | * file. Unified images are binary ELFs, and EFI variables are not pure text either. */ | |
364 | if (e->type == BOOT_ENTRY_CONF) | |
365 | (void) terminal_urlify_path(e->path, NULL, &link); | |
366 | ||
367 | printf(" source: %s\n", link ?: e->path); | |
368 | } | |
20a28174 LP |
369 | if (e->version) |
370 | printf(" version: %s\n", e->version); | |
371 | if (e->machine_id) | |
372 | printf(" machine-id: %s\n", e->machine_id); | |
373 | if (e->architecture) | |
374 | printf(" architecture: %s\n", e->architecture); | |
375 | if (e->kernel) | |
d3eb6072 | 376 | boot_entry_file_list("linux", e->root, e->kernel, &status); |
20a28174 | 377 | |
44e6a5ef ZJS |
378 | char **s; |
379 | STRV_FOREACH(s, e->initrd) | |
380 | boot_entry_file_list(s == e->initrd ? "initrd" : NULL, | |
381 | e->root, | |
d3eb6072 ZJS |
382 | *s, |
383 | &status); | |
20a28174 | 384 | if (!strv_isempty(e->options)) { |
9dae4c8a ZJS |
385 | _cleanup_free_ char *t = NULL, *t2 = NULL; |
386 | _cleanup_strv_free_ char **ts = NULL; | |
20a28174 LP |
387 | |
388 | t = strv_join(e->options, " "); | |
389 | if (!t) | |
390 | return log_oom(); | |
391 | ||
9dae4c8a ZJS |
392 | ts = strv_split_newlines(t); |
393 | if (!ts) | |
394 | return log_oom(); | |
395 | ||
396 | t2 = strv_join(ts, "\n "); | |
397 | if (!t2) | |
398 | return log_oom(); | |
399 | ||
9dae4c8a | 400 | printf(" options: %s\n", t2); |
20a28174 LP |
401 | } |
402 | if (e->device_tree) | |
d3eb6072 | 403 | boot_entry_file_list("devicetree", e->root, e->device_tree, &status); |
20a28174 | 404 | |
d3eb6072 | 405 | return -status; |
20a28174 LP |
406 | } |
407 | ||
81fed855 LP |
408 | static int status_entries( |
409 | const char *esp_path, | |
410 | sd_id128_t esp_partition_uuid, | |
411 | const char *xbootldr_path, | |
412 | sd_id128_t xbootldr_partition_uuid) { | |
413 | ||
7e87c7d9 | 414 | _cleanup_(boot_config_free) BootConfig config = {}; |
81fed855 LP |
415 | sd_id128_t dollar_boot_partition_uuid; |
416 | const char *dollar_boot_path; | |
a099e035 | 417 | int r; |
7e87c7d9 | 418 | |
81fed855 LP |
419 | assert(esp_path || xbootldr_path); |
420 | ||
421 | if (xbootldr_path) { | |
422 | dollar_boot_path = xbootldr_path; | |
423 | dollar_boot_partition_uuid = xbootldr_partition_uuid; | |
424 | } else { | |
425 | dollar_boot_path = esp_path; | |
426 | dollar_boot_partition_uuid = esp_partition_uuid; | |
427 | } | |
428 | ||
429 | printf("Boot Loader Entries:\n" | |
430 | " $BOOT: %s", dollar_boot_path); | |
431 | if (!sd_id128_is_null(dollar_boot_partition_uuid)) | |
bd44566c ZJS |
432 | printf(" (/dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR ")", |
433 | SD_ID128_FORMAT_VAL(dollar_boot_partition_uuid)); | |
81fed855 LP |
434 | printf("\n\n"); |
435 | ||
fbf45d22 | 436 | r = boot_entries_load_config(esp_path, xbootldr_path, &config); |
7e87c7d9 | 437 | if (r < 0) |
21f7a622 | 438 | return r; |
7e87c7d9 ZJS |
439 | |
440 | if (config.default_entry < 0) | |
a099e035 | 441 | printf("%zu entries, no entry could be determined as default.\n", config.n_entries); |
7e87c7d9 | 442 | else { |
7fd66f3c | 443 | printf("Default Boot Loader Entry:\n"); |
a099e035 | 444 | |
d3eb6072 ZJS |
445 | r = boot_entry_show(config.entries + config.default_entry, false); |
446 | if (r > 0) | |
447 | /* < 0 is already logged by the function itself, let's just emit an extra warning if | |
448 | the default entry is broken */ | |
449 | printf("\nWARNING: default boot entry is broken\n"); | |
7e87c7d9 ZJS |
450 | } |
451 | ||
452 | return 0; | |
453 | } | |
454 | ||
0974a682 KS |
455 | static int compare_product(const char *a, const char *b) { |
456 | size_t x, y; | |
457 | ||
458 | assert(a); | |
459 | assert(b); | |
460 | ||
461 | x = strcspn(a, " "); | |
462 | y = strcspn(b, " "); | |
463 | if (x != y) | |
464 | return x < y ? -1 : x > y ? 1 : 0; | |
465 | ||
466 | return strncmp(a, b, x); | |
467 | } | |
468 | ||
469 | static int compare_version(const char *a, const char *b) { | |
470 | assert(a); | |
471 | assert(b); | |
472 | ||
473 | a += strcspn(a, " "); | |
474 | a += strspn(a, " "); | |
475 | b += strcspn(b, " "); | |
476 | b += strspn(b, " "); | |
477 | ||
478 | return strverscmp(a, b); | |
479 | } | |
480 | ||
175d308c | 481 | static int version_check(int fd_from, const char *from, int fd_to, const char *to) { |
d3226d77 | 482 | _cleanup_free_ char *a = NULL, *b = NULL; |
0974a682 KS |
483 | int r; |
484 | ||
175d308c | 485 | assert(fd_from >= 0); |
0974a682 | 486 | assert(from); |
175d308c | 487 | assert(fd_to >= 0); |
0974a682 KS |
488 | assert(to); |
489 | ||
175d308c | 490 | r = get_file_version(fd_from, &a); |
0974a682 | 491 | if (r < 0) |
d3226d77 | 492 | return r; |
baaa35ad ZJS |
493 | if (r == 0) |
494 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
495 | "Source file \"%s\" does not carry version information!", | |
496 | from); | |
0974a682 | 497 | |
175d308c | 498 | r = get_file_version(fd_to, &b); |
0974a682 | 499 | if (r < 0) |
d3226d77 | 500 | return r; |
baaa35ad ZJS |
501 | if (r == 0 || compare_product(a, b) != 0) |
502 | return log_notice_errno(SYNTHETIC_ERRNO(EEXIST), | |
503 | "Skipping \"%s\", since it's owned by another boot loader.", | |
504 | to); | |
0974a682 | 505 | |
78d5d4ed LP |
506 | if (compare_version(a, b) < 0) |
507 | return log_warning_errno(SYNTHETIC_ERRNO(ESTALE), "Skipping \"%s\", since a newer boot loader version exists already.", to); | |
0974a682 | 508 | |
d3226d77 | 509 | return 0; |
0974a682 KS |
510 | } |
511 | ||
175d308c LP |
512 | static int copy_file_with_version_check(const char *from, const char *to, bool force) { |
513 | _cleanup_close_ int fd_from = -1, fd_to = -1; | |
514 | _cleanup_free_ char *t = NULL; | |
0974a682 | 515 | int r; |
0974a682 | 516 | |
175d308c LP |
517 | fd_from = open(from, O_RDONLY|O_CLOEXEC|O_NOCTTY); |
518 | if (fd_from < 0) | |
d3226d77 | 519 | return log_error_errno(errno, "Failed to open \"%s\" for reading: %m", from); |
0974a682 KS |
520 | |
521 | if (!force) { | |
175d308c LP |
522 | fd_to = open(to, O_RDONLY|O_CLOEXEC|O_NOCTTY); |
523 | if (fd_to < 0) { | |
524 | if (errno != -ENOENT) | |
525 | return log_error_errno(errno, "Failed to open \"%s\" for reading: %m", to); | |
526 | } else { | |
527 | r = version_check(fd_from, from, fd_to, to); | |
528 | if (r < 0) | |
529 | return r; | |
530 | ||
531 | if (lseek(fd_from, 0, SEEK_SET) == (off_t) -1) | |
6719ca72 | 532 | return log_error_errno(errno, "Failed to seek in \"%s\": %m", from); |
175d308c LP |
533 | |
534 | fd_to = safe_close(fd_to); | |
0974a682 | 535 | } |
175d308c | 536 | } |
d3226d77 | 537 | |
175d308c LP |
538 | r = tempfn_random(to, NULL, &t); |
539 | if (r < 0) | |
540 | return log_oom(); | |
0974a682 | 541 | |
175d308c LP |
542 | RUN_WITH_UMASK(0000) { |
543 | fd_to = open(t, O_WRONLY|O_CREAT|O_CLOEXEC|O_EXCL|O_NOFOLLOW, 0644); | |
544 | if (fd_to < 0) | |
545 | return log_error_errno(errno, "Failed to open \"%s\" for writing: %m", t); | |
0974a682 KS |
546 | } |
547 | ||
175d308c | 548 | r = copy_bytes(fd_from, fd_to, (uint64_t) -1, COPY_REFLINK); |
0974a682 | 549 | if (r < 0) { |
0675e94a AJ |
550 | (void) unlink(t); |
551 | return log_error_errno(r, "Failed to copy data from \"%s\" to \"%s\": %m", from, t); | |
0974a682 KS |
552 | } |
553 | ||
adc6f43b | 554 | (void) copy_times(fd_from, fd_to, 0); |
0974a682 | 555 | |
8ac2f74f | 556 | if (fsync(fd_to) < 0) { |
0675e94a AJ |
557 | (void) unlink_noerrno(t); |
558 | return log_error_errno(errno, "Failed to copy data from \"%s\" to \"%s\": %m", from, t); | |
559 | } | |
560 | ||
8ac2f74f LP |
561 | (void) fsync_directory_of_file(fd_to); |
562 | ||
b1c05b98 | 563 | if (renameat(AT_FDCWD, t, AT_FDCWD, to) < 0) { |
175d308c LP |
564 | (void) unlink_noerrno(t); |
565 | return log_error_errno(errno, "Failed to rename \"%s\" to \"%s\": %m", t, to); | |
0974a682 KS |
566 | } |
567 | ||
d3226d77 | 568 | log_info("Copied \"%s\" to \"%s\".", from, to); |
0974a682 | 569 | |
175d308c | 570 | return 0; |
0974a682 KS |
571 | } |
572 | ||
0974a682 | 573 | static int mkdir_one(const char *prefix, const char *suffix) { |
e2600fd5 | 574 | _cleanup_free_ char *p = NULL; |
0974a682 | 575 | |
e2600fd5 | 576 | p = path_join(prefix, suffix); |
0974a682 | 577 | if (mkdir(p, 0700) < 0) { |
d3226d77 ZJS |
578 | if (errno != EEXIST) |
579 | return log_error_errno(errno, "Failed to create \"%s\": %m", p); | |
0974a682 | 580 | } else |
d3226d77 | 581 | log_info("Created \"%s\".", p); |
7b4d7cc0 | 582 | |
0974a682 KS |
583 | return 0; |
584 | } | |
585 | ||
fbf45d22 | 586 | static const char *const esp_subdirs[] = { |
e44c3229 | 587 | /* The directories to place in the ESP */ |
d3226d77 ZJS |
588 | "EFI", |
589 | "EFI/systemd", | |
00f69504 | 590 | "EFI/BOOT", |
d3226d77 | 591 | "loader", |
9ee051b9 | 592 | NULL |
d3226d77 ZJS |
593 | }; |
594 | ||
e44c3229 LP |
595 | static const char *const dollar_boot_subdirs[] = { |
596 | /* The directories to place in the XBOOTLDR partition or the ESP, depending what exists */ | |
597 | "loader", | |
598 | "loader/entries", /* Type #1 entries */ | |
599 | "EFI", | |
600 | "EFI/Linux", /* Type #2 entries */ | |
601 | NULL | |
602 | }; | |
603 | ||
604 | static int create_subdirs(const char *root, const char * const *subdirs) { | |
fbf45d22 | 605 | const char *const *i; |
0974a682 KS |
606 | int r; |
607 | ||
e44c3229 LP |
608 | STRV_FOREACH(i, subdirs) { |
609 | r = mkdir_one(root, *i); | |
d3226d77 ZJS |
610 | if (r < 0) |
611 | return r; | |
612 | } | |
7b4d7cc0 | 613 | |
7b4d7cc0 | 614 | return 0; |
7b4d7cc0 KS |
615 | } |
616 | ||
0974a682 | 617 | static int copy_one_file(const char *esp_path, const char *name, bool force) { |
5509f912 | 618 | const char *e; |
d3226d77 | 619 | char *p, *q; |
0974a682 KS |
620 | int r; |
621 | ||
d3226d77 ZJS |
622 | p = strjoina(BOOTLIBDIR "/", name); |
623 | q = strjoina(esp_path, "/EFI/systemd/", name); | |
175d308c | 624 | r = copy_file_with_version_check(p, q, force); |
0974a682 | 625 | |
5509f912 LP |
626 | e = startswith(name, "systemd-boot"); |
627 | if (e) { | |
0974a682 | 628 | int k; |
d3226d77 | 629 | char *v; |
0974a682 KS |
630 | |
631 | /* Create the EFI default boot loader name (specified for removable devices) */ | |
5509f912 | 632 | v = strjoina(esp_path, "/EFI/BOOT/BOOT", e); |
846b8fc3 | 633 | ascii_strupper(strrchr(v, '/') + 1); |
0974a682 | 634 | |
175d308c | 635 | k = copy_file_with_version_check(p, v, force); |
0974a682 | 636 | if (k < 0 && r == 0) |
d3226d77 | 637 | r = k; |
0974a682 KS |
638 | } |
639 | ||
640 | return r; | |
7b4d7cc0 KS |
641 | } |
642 | ||
0974a682 KS |
643 | static int install_binaries(const char *esp_path, bool force) { |
644 | struct dirent *de; | |
d3226d77 | 645 | _cleanup_closedir_ DIR *d = NULL; |
0974a682 KS |
646 | int r = 0; |
647 | ||
e7dd673d | 648 | d = opendir(BOOTLIBDIR); |
d3226d77 ZJS |
649 | if (!d) |
650 | return log_error_errno(errno, "Failed to open \""BOOTLIBDIR"\": %m"); | |
0974a682 | 651 | |
0d73a816 | 652 | FOREACH_DIRENT(de, d, return log_error_errno(errno, "Failed to read \""BOOTLIBDIR"\": %m")) { |
0974a682 KS |
653 | int k; |
654 | ||
d3226d77 | 655 | if (!endswith_no_case(de->d_name, ".efi")) |
0974a682 KS |
656 | continue; |
657 | ||
658 | k = copy_one_file(esp_path, de->d_name, force); | |
659 | if (k < 0 && r == 0) | |
660 | r = k; | |
661 | } | |
662 | ||
0974a682 | 663 | return r; |
7b4d7cc0 KS |
664 | } |
665 | ||
b461576d | 666 | static bool same_entry(uint16_t id, sd_id128_t uuid, const char *path) { |
d3226d77 | 667 | _cleanup_free_ char *opath = NULL; |
0974a682 | 668 | sd_id128_t ouuid; |
d3226d77 | 669 | int r; |
7b4d7cc0 | 670 | |
d3226d77 ZJS |
671 | r = efi_get_boot_option(id, NULL, &ouuid, &opath, NULL); |
672 | if (r < 0) | |
0974a682 KS |
673 | return false; |
674 | if (!sd_id128_equal(uuid, ouuid)) | |
d3226d77 | 675 | return false; |
0974a682 | 676 | if (!streq_ptr(path, opath)) |
d3226d77 | 677 | return false; |
0974a682 | 678 | |
d3226d77 | 679 | return true; |
0974a682 KS |
680 | } |
681 | ||
682 | static int find_slot(sd_id128_t uuid, const char *path, uint16_t *id) { | |
d3226d77 ZJS |
683 | _cleanup_free_ uint16_t *options = NULL; |
684 | int n, i; | |
0974a682 | 685 | |
d3226d77 ZJS |
686 | n = efi_get_boot_options(&options); |
687 | if (n < 0) | |
688 | return n; | |
0974a682 | 689 | |
e7dd673d | 690 | /* find already existing systemd-boot entry */ |
d3226d77 | 691 | for (i = 0; i < n; i++) |
0974a682 | 692 | if (same_entry(options[i], uuid, path)) { |
d3226d77 ZJS |
693 | *id = options[i]; |
694 | return 1; | |
0974a682 KS |
695 | } |
696 | ||
697 | /* find free slot in the sorted BootXXXX variable list */ | |
d3226d77 | 698 | for (i = 0; i < n; i++) |
0974a682 | 699 | if (i != options[i]) { |
d3226d77 ZJS |
700 | *id = i; |
701 | return 1; | |
0974a682 KS |
702 | } |
703 | ||
704 | /* use the next one */ | |
705 | if (i == 0xffff) | |
706 | return -ENOSPC; | |
d3226d77 ZJS |
707 | *id = i; |
708 | return 0; | |
0974a682 KS |
709 | } |
710 | ||
711 | static int insert_into_order(uint16_t slot, bool first) { | |
d3226d77 ZJS |
712 | _cleanup_free_ uint16_t *order = NULL; |
713 | uint16_t *t; | |
714 | int n, i; | |
0974a682 | 715 | |
d3226d77 ZJS |
716 | n = efi_get_boot_order(&order); |
717 | if (n <= 0) | |
0974a682 | 718 | /* no entry, add us */ |
d3226d77 | 719 | return efi_set_boot_order(&slot, 1); |
0974a682 KS |
720 | |
721 | /* are we the first and only one? */ | |
d3226d77 ZJS |
722 | if (n == 1 && order[0] == slot) |
723 | return 0; | |
0974a682 KS |
724 | |
725 | /* are we already in the boot order? */ | |
d3226d77 | 726 | for (i = 0; i < n; i++) { |
0974a682 KS |
727 | if (order[i] != slot) |
728 | continue; | |
729 | ||
730 | /* we do not require to be the first one, all is fine */ | |
731 | if (!first) | |
d3226d77 | 732 | return 0; |
0974a682 KS |
733 | |
734 | /* move us to the first slot */ | |
d3226d77 | 735 | memmove(order + 1, order, i * sizeof(uint16_t)); |
0974a682 | 736 | order[0] = slot; |
d3226d77 | 737 | return efi_set_boot_order(order, n); |
0974a682 KS |
738 | } |
739 | ||
740 | /* extend array */ | |
a7798cd8 | 741 | t = reallocarray(order, n + 1, sizeof(uint16_t)); |
d3226d77 ZJS |
742 | if (!t) |
743 | return -ENOMEM; | |
744 | order = t; | |
0974a682 KS |
745 | |
746 | /* add us to the top or end of the list */ | |
747 | if (first) { | |
d3226d77 | 748 | memmove(order + 1, order, n * sizeof(uint16_t)); |
0974a682 KS |
749 | order[0] = slot; |
750 | } else | |
d3226d77 | 751 | order[n] = slot; |
0974a682 | 752 | |
d3226d77 | 753 | return efi_set_boot_order(order, n + 1); |
0974a682 KS |
754 | } |
755 | ||
756 | static int remove_from_order(uint16_t slot) { | |
7cb0f263 | 757 | _cleanup_free_ uint16_t *order = NULL; |
d3226d77 | 758 | int n, i; |
0974a682 | 759 | |
d3226d77 ZJS |
760 | n = efi_get_boot_order(&order); |
761 | if (n <= 0) | |
762 | return n; | |
0974a682 | 763 | |
d3226d77 | 764 | for (i = 0; i < n; i++) { |
0974a682 KS |
765 | if (order[i] != slot) |
766 | continue; | |
767 | ||
d3226d77 ZJS |
768 | if (i + 1 < n) |
769 | memmove(order + i, order + i+1, (n - i) * sizeof(uint16_t)); | |
770 | return efi_set_boot_order(order, n - 1); | |
0974a682 KS |
771 | } |
772 | ||
d3226d77 | 773 | return 0; |
0974a682 KS |
774 | } |
775 | ||
776 | static int install_variables(const char *esp_path, | |
777 | uint32_t part, uint64_t pstart, uint64_t psize, | |
778 | sd_id128_t uuid, const char *path, | |
779 | bool first) { | |
270384b2 | 780 | const char *p; |
0974a682 KS |
781 | uint16_t slot; |
782 | int r; | |
783 | ||
784 | if (!is_efi_boot()) { | |
d3226d77 | 785 | log_warning("Not booted with EFI, skipping EFI variable setup."); |
0974a682 KS |
786 | return 0; |
787 | } | |
788 | ||
270384b2 | 789 | p = prefix_roota(esp_path, path); |
0974a682 KS |
790 | if (access(p, F_OK) < 0) { |
791 | if (errno == ENOENT) | |
d3226d77 | 792 | return 0; |
f939cff7 LP |
793 | |
794 | return log_error_errno(errno, "Cannot access \"%s\": %m", p); | |
0974a682 | 795 | } |
7b4d7cc0 | 796 | |
0974a682 | 797 | r = find_slot(uuid, path, &slot); |
d3226d77 ZJS |
798 | if (r < 0) |
799 | return log_error_errno(r, | |
800 | r == -ENOENT ? | |
801 | "Failed to access EFI variables. Is the \"efivarfs\" filesystem mounted?" : | |
802 | "Failed to determine current boot order: %m"); | |
7b4d7cc0 | 803 | |
181ccb43 | 804 | if (first || r == 0) { |
0974a682 KS |
805 | r = efi_add_boot_option(slot, "Linux Boot Manager", |
806 | part, pstart, psize, | |
807 | uuid, path); | |
d3226d77 ZJS |
808 | if (r < 0) |
809 | return log_error_errno(r, "Failed to create EFI Boot variable entry: %m"); | |
0974a682 | 810 | |
d3226d77 ZJS |
811 | log_info("Created EFI boot entry \"Linux Boot Manager\"."); |
812 | } | |
0974a682 | 813 | |
d3226d77 | 814 | return insert_into_order(slot, first); |
0974a682 KS |
815 | } |
816 | ||
817 | static int remove_boot_efi(const char *esp_path) { | |
d3226d77 | 818 | _cleanup_closedir_ DIR *d = NULL; |
0974a682 | 819 | struct dirent *de; |
270384b2 | 820 | const char *p; |
d3226d77 | 821 | int r, c = 0; |
0974a682 | 822 | |
270384b2 | 823 | p = prefix_roota(esp_path, "/EFI/BOOT"); |
0974a682 KS |
824 | d = opendir(p); |
825 | if (!d) { | |
d3226d77 ZJS |
826 | if (errno == ENOENT) |
827 | return 0; | |
0974a682 | 828 | |
d3226d77 | 829 | return log_error_errno(errno, "Failed to open directory \"%s\": %m", p); |
0974a682 KS |
830 | } |
831 | ||
e41256dc | 832 | FOREACH_DIRENT(de, d, break) { |
d3226d77 ZJS |
833 | _cleanup_close_ int fd = -1; |
834 | _cleanup_free_ char *v = NULL; | |
0974a682 | 835 | |
d3226d77 | 836 | if (!endswith_no_case(de->d_name, ".efi")) |
0974a682 KS |
837 | continue; |
838 | ||
b7536c45 | 839 | if (!startswith_no_case(de->d_name, "boot")) |
0974a682 KS |
840 | continue; |
841 | ||
d3226d77 | 842 | fd = openat(dirfd(d), de->d_name, O_RDONLY|O_CLOEXEC); |
dd114e11 | 843 | if (fd < 0) |
d3226d77 | 844 | return log_error_errno(errno, "Failed to open \"%s/%s\" for reading: %m", p, de->d_name); |
0974a682 | 845 | |
d3226d77 | 846 | r = get_file_version(fd, &v); |
0974a682 | 847 | if (r < 0) |
d3226d77 ZJS |
848 | return r; |
849 | if (r > 0 && startswith(v, "systemd-boot ")) { | |
850 | r = unlinkat(dirfd(d), de->d_name, 0); | |
851 | if (r < 0) | |
852 | return log_error_errno(errno, "Failed to remove \"%s/%s\": %m", p, de->d_name); | |
853 | ||
a592ab6a | 854 | log_info("Removed \"%s/%s\".", p, de->d_name); |
0974a682 KS |
855 | } |
856 | ||
857 | c++; | |
0974a682 KS |
858 | } |
859 | ||
d3226d77 | 860 | return c; |
0974a682 KS |
861 | } |
862 | ||
863 | static int rmdir_one(const char *prefix, const char *suffix) { | |
270384b2 | 864 | const char *p; |
7b4d7cc0 | 865 | |
270384b2 | 866 | p = prefix_roota(prefix, suffix); |
0974a682 | 867 | if (rmdir(p) < 0) { |
fbf45d22 LP |
868 | bool ignore = IN_SET(errno, ENOENT, ENOTEMPTY); |
869 | ||
870 | log_full_errno(ignore ? LOG_DEBUG : LOG_ERR, errno, | |
871 | "Failed to remove directory \"%s\": %m", p); | |
872 | if (!ignore) | |
873 | return -errno; | |
7b4d7cc0 | 874 | } else |
d3226d77 | 875 | log_info("Removed \"%s\".", p); |
7b4d7cc0 | 876 | |
0974a682 | 877 | return 0; |
7b4d7cc0 KS |
878 | } |
879 | ||
e44c3229 LP |
880 | static int remove_subdirs(const char *root, const char *const *subdirs) { |
881 | int r, q; | |
fbf45d22 | 882 | |
e44c3229 LP |
883 | /* We use recursion here to destroy the directories in reverse order. Which should be safe given how |
884 | * short the array is. */ | |
fbf45d22 | 885 | |
e44c3229 LP |
886 | if (!subdirs[0]) /* A the end of the list */ |
887 | return 0; | |
fbf45d22 | 888 | |
e44c3229 LP |
889 | r = remove_subdirs(root, subdirs + 1); |
890 | q = rmdir_one(root, subdirs[0]); | |
891 | ||
892 | return r < 0 ? r : q; | |
893 | } | |
894 | ||
895 | static int remove_machine_id_directory(const char *root, sd_id128_t machine_id) { | |
896 | char buf[SD_ID128_STRING_MAX]; | |
897 | ||
898 | assert(root); | |
899 | ||
900 | return rmdir_one(root, sd_id128_to_string(machine_id, buf)); | |
fbf45d22 LP |
901 | } |
902 | ||
0974a682 | 903 | static int remove_binaries(const char *esp_path) { |
270384b2 | 904 | const char *p; |
0974a682 KS |
905 | int r, q; |
906 | ||
270384b2 | 907 | p = prefix_roota(esp_path, "/EFI/systemd"); |
c6878637 | 908 | r = rm_rf(p, REMOVE_ROOT|REMOVE_PHYSICAL); |
0974a682 KS |
909 | |
910 | q = remove_boot_efi(esp_path); | |
911 | if (q < 0 && r == 0) | |
912 | r = q; | |
913 | ||
0974a682 KS |
914 | return r; |
915 | } | |
916 | ||
e44c3229 | 917 | static int remove_file(const char *root, const char *file) { |
fbf45d22 LP |
918 | const char *p; |
919 | ||
e44c3229 LP |
920 | assert(root); |
921 | assert(file); | |
fbf45d22 | 922 | |
e44c3229 | 923 | p = prefix_roota(root, file); |
fbf45d22 | 924 | if (unlink(p) < 0) { |
e44c3229 LP |
925 | log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_ERR, errno, |
926 | "Failed to unlink file \"%s\": %m", p); | |
fbf45d22 | 927 | |
e44c3229 LP |
928 | return errno == ENOENT ? 0 : -errno; |
929 | } | |
fbf45d22 | 930 | |
e44c3229 LP |
931 | log_info("Removed \"%s\".", p); |
932 | return 1; | |
fbf45d22 LP |
933 | } |
934 | ||
0974a682 KS |
935 | static int remove_variables(sd_id128_t uuid, const char *path, bool in_order) { |
936 | uint16_t slot; | |
937 | int r; | |
938 | ||
939 | if (!is_efi_boot()) | |
940 | return 0; | |
941 | ||
942 | r = find_slot(uuid, path, &slot); | |
943 | if (r != 1) | |
944 | return 0; | |
945 | ||
946 | r = efi_remove_boot_option(slot); | |
947 | if (r < 0) | |
948 | return r; | |
949 | ||
950 | if (in_order) | |
d3226d77 | 951 | return remove_from_order(slot); |
f939cff7 LP |
952 | |
953 | return 0; | |
0974a682 KS |
954 | } |
955 | ||
e44c3229 LP |
956 | static int remove_loader_variables(void) { |
957 | const char *p; | |
958 | int r = 0; | |
959 | ||
960 | /* Remove all persistent loader variables we define */ | |
961 | ||
962 | FOREACH_STRING(p, | |
963 | "LoaderConfigTimeout", | |
964 | "LoaderConfigTimeoutOneShot", | |
965 | "LoaderEntryDefault", | |
966 | "LoaderEntryOneShot", | |
967 | "LoaderSystemToken") { | |
968 | ||
969 | int q; | |
970 | ||
971 | q = efi_set_variable(EFI_VENDOR_LOADER, p, NULL, 0); | |
972 | if (q == -ENOENT) | |
973 | continue; | |
974 | if (q < 0) { | |
975 | log_warning_errno(q, "Failed to remove %s variable: %m", p); | |
976 | if (r >= 0) | |
977 | r = q; | |
978 | } else | |
979 | log_info("Removed EFI variable %s.", p); | |
980 | } | |
981 | ||
982 | return r; | |
983 | } | |
984 | ||
341890de | 985 | static int install_loader_config(const char *esp_path, sd_id128_t machine_id) { |
d5ff6d6d | 986 | char machine_string[SD_ID128_STRING_MAX]; |
f5b84de2 LP |
987 | _cleanup_(unlink_and_freep) char *t = NULL; |
988 | _cleanup_fclose_ FILE *f = NULL; | |
d5ff6d6d | 989 | const char *p; |
f5b84de2 | 990 | int r, fd; |
0974a682 | 991 | |
270384b2 | 992 | p = prefix_roota(esp_path, "/loader/loader.conf"); |
f5b84de2 LP |
993 | if (access(p, F_OK) >= 0) /* Silently skip creation if the file already exists (early check) */ |
994 | return 0; | |
995 | ||
996 | fd = open_tmpfile_linkable(p, O_WRONLY|O_CLOEXEC, &t); | |
997 | if (fd < 0) | |
998 | return log_error_errno(fd, "Failed to open \"%s\" for writing: %m", p); | |
999 | ||
e92aaed3 | 1000 | f = fdopen(fd, "w"); |
f5b84de2 LP |
1001 | if (!f) { |
1002 | safe_close(fd); | |
1003 | return log_oom(); | |
1004 | } | |
0974a682 | 1005 | |
a36b411e LP |
1006 | fprintf(f, "#timeout 3\n" |
1007 | "#console-mode keep\n" | |
1008 | "default %s-*\n", sd_id128_to_string(machine_id, machine_string)); | |
0974a682 | 1009 | |
0675e94a | 1010 | r = fflush_sync_and_check(f); |
d5ff6d6d LP |
1011 | if (r < 0) |
1012 | return log_error_errno(r, "Failed to write \"%s\": %m", p); | |
0974a682 | 1013 | |
f5b84de2 LP |
1014 | r = link_tmpfile(fd, t, p); |
1015 | if (r == -EEXIST) | |
1016 | return 0; /* Silently skip creation if the file exists now (recheck) */ | |
1017 | if (r < 0) | |
1018 | return log_error_errno(r, "Failed to move \"%s\" into place: %m", p); | |
1019 | ||
1020 | t = mfree(t); | |
f5b84de2 | 1021 | return 1; |
0974a682 KS |
1022 | } |
1023 | ||
e44c3229 | 1024 | static int install_machine_id_directory(const char *root, sd_id128_t machine_id) { |
341890de ZJS |
1025 | char buf[SD_ID128_STRING_MAX]; |
1026 | ||
e44c3229 | 1027 | assert(root); |
341890de | 1028 | |
e44c3229 | 1029 | return mkdir_one(root, sd_id128_to_string(machine_id, buf)); |
fbf45d22 LP |
1030 | } |
1031 | ||
2f2c539c | 1032 | static int help(int argc, char *argv[], void *userdata) { |
37ec0fdd LP |
1033 | _cleanup_free_ char *link = NULL; |
1034 | int r; | |
1035 | ||
1036 | r = terminal_urlify_man("bootctl", "1", &link); | |
1037 | if (r < 0) | |
1038 | return log_oom(); | |
2f2c539c | 1039 | |
37ec0fdd | 1040 | printf("%s [COMMAND] [OPTIONS...]\n\n" |
68cc17f1 | 1041 | "Install, update or remove the systemd-boot EFI boot manager.\n\n" |
fbf45d22 LP |
1042 | " -h --help Show this help\n" |
1043 | " --version Print version\n" | |
1044 | " --esp-path=PATH Path to the EFI System Partition (ESP)\n" | |
1045 | " --boot-path=PATH Path to the $BOOT partition\n" | |
1046 | " -p --print-esp-path Print path to the EFI System Partition\n" | |
fba4e945 | 1047 | " -x --print-boot-path Print path to the $BOOT partition\n" |
fbf45d22 LP |
1048 | " --no-variables Don't touch EFI variables\n" |
1049 | " --no-pager Do not pipe output into a pager\n" | |
d88c96ff | 1050 | "\nBoot Loader Commands:\n" |
fbf45d22 LP |
1051 | " status Show status of installed systemd-boot and EFI variables\n" |
1052 | " install Install systemd-boot to the ESP and EFI variables\n" | |
1053 | " update Update systemd-boot in the ESP and EFI variables\n" | |
1054 | " remove Remove systemd-boot from the ESP and EFI variables\n" | |
e44c3229 | 1055 | " random-seed Initialize random seed in ESP and EFI variables\n" |
a2aa605d | 1056 | " is-installed Test whether systemd-boot is installed in the ESP\n" |
d88c96ff | 1057 | "\nBoot Loader Entries Commands:\n" |
fbf45d22 LP |
1058 | " list List boot loader entries\n" |
1059 | " set-default ID Set default boot loader entry\n" | |
1060 | " set-oneshot ID Set default boot loader entry, for next boot only\n" | |
37ec0fdd LP |
1061 | "\nSee the %s for details.\n" |
1062 | , program_invocation_short_name | |
d88c96ff | 1063 | , link); |
0974a682 KS |
1064 | |
1065 | return 0; | |
1066 | } | |
1067 | ||
0974a682 KS |
1068 | static int parse_argv(int argc, char *argv[]) { |
1069 | enum { | |
fbf45d22 LP |
1070 | ARG_ESP_PATH = 0x100, |
1071 | ARG_BOOT_PATH, | |
0974a682 KS |
1072 | ARG_VERSION, |
1073 | ARG_NO_VARIABLES, | |
57db6f18 | 1074 | ARG_NO_PAGER, |
7b4d7cc0 KS |
1075 | }; |
1076 | ||
0974a682 | 1077 | static const struct option options[] = { |
fbf45d22 LP |
1078 | { "help", no_argument, NULL, 'h' }, |
1079 | { "version", no_argument, NULL, ARG_VERSION }, | |
1080 | { "esp-path", required_argument, NULL, ARG_ESP_PATH }, | |
1081 | { "path", required_argument, NULL, ARG_ESP_PATH }, /* Compatibility alias */ | |
1082 | { "boot-path", required_argument, NULL, ARG_BOOT_PATH }, | |
1083 | { "print-esp-path", no_argument, NULL, 'p' }, | |
1084 | { "print-path", no_argument, NULL, 'p' }, /* Compatibility alias */ | |
fba4e945 | 1085 | { "print-boot-path", no_argument, NULL, 'x' }, |
fbf45d22 LP |
1086 | { "no-variables", no_argument, NULL, ARG_NO_VARIABLES }, |
1087 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, | |
a36b411e | 1088 | {} |
0974a682 KS |
1089 | }; |
1090 | ||
2f2c539c | 1091 | int c, r; |
7b4d7cc0 KS |
1092 | |
1093 | assert(argc >= 0); | |
1094 | assert(argv); | |
1095 | ||
fba4e945 | 1096 | while ((c = getopt_long(argc, argv, "hpx", options, NULL)) >= 0) |
0974a682 | 1097 | switch (c) { |
7b4d7cc0 | 1098 | |
0974a682 | 1099 | case 'h': |
2f2c539c | 1100 | help(0, NULL, NULL); |
7b4d7cc0 | 1101 | return 0; |
7b4d7cc0 | 1102 | |
0974a682 | 1103 | case ARG_VERSION: |
3f6fd1ba | 1104 | return version(); |
7b4d7cc0 | 1105 | |
fbf45d22 LP |
1106 | case ARG_ESP_PATH: |
1107 | r = free_and_strdup(&arg_esp_path, optarg); | |
1108 | if (r < 0) | |
1109 | return log_oom(); | |
1110 | break; | |
1111 | ||
1112 | case ARG_BOOT_PATH: | |
1113 | r = free_and_strdup(&arg_xbootldr_path, optarg); | |
2f2c539c LP |
1114 | if (r < 0) |
1115 | return log_oom(); | |
0974a682 KS |
1116 | break; |
1117 | ||
30b50477 | 1118 | case 'p': |
aa467bca ZJS |
1119 | if (arg_print_dollar_boot_path) |
1120 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1121 | "--print-boot-path/-x cannot be combined with --print-esp-path/-p"); | |
fbf45d22 LP |
1122 | arg_print_esp_path = true; |
1123 | break; | |
1124 | ||
fba4e945 | 1125 | case 'x': |
aa467bca ZJS |
1126 | if (arg_print_esp_path) |
1127 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1128 | "--print-boot-path/-x cannot be combined with --print-esp-path/-p"); | |
fbf45d22 | 1129 | arg_print_dollar_boot_path = true; |
30b50477 ZJS |
1130 | break; |
1131 | ||
0974a682 KS |
1132 | case ARG_NO_VARIABLES: |
1133 | arg_touch_variables = false; | |
1134 | break; | |
1135 | ||
57db6f18 | 1136 | case ARG_NO_PAGER: |
0221d68a | 1137 | arg_pager_flags |= PAGER_DISABLE; |
57db6f18 LP |
1138 | break; |
1139 | ||
0974a682 KS |
1140 | case '?': |
1141 | return -EINVAL; | |
1142 | ||
1143 | default: | |
d3226d77 | 1144 | assert_not_reached("Unknown option"); |
7b4d7cc0 | 1145 | } |
7b4d7cc0 | 1146 | |
0974a682 KS |
1147 | return 1; |
1148 | } | |
7b4d7cc0 | 1149 | |
551710cf ZJS |
1150 | static void read_loader_efi_var(const char *name, char **var) { |
1151 | int r; | |
1152 | ||
1153 | r = efi_get_variable_string(EFI_VENDOR_LOADER, name, var); | |
1154 | if (r < 0 && r != -ENOENT) | |
1155 | log_warning_errno(r, "Failed to read EFI variable %s: %m", name); | |
1156 | } | |
1157 | ||
2f2c539c | 1158 | static int verb_status(int argc, char *argv[], void *userdata) { |
fbf45d22 | 1159 | sd_id128_t esp_uuid = SD_ID128_NULL, xbootldr_uuid = SD_ID128_NULL; |
46fb255b | 1160 | int r, k; |
0974a682 | 1161 | |
fbf45d22 LP |
1162 | r = acquire_esp(geteuid() != 0, NULL, NULL, NULL, &esp_uuid); |
1163 | if (arg_print_esp_path) { | |
5caa3167 LP |
1164 | if (r == -EACCES) /* If we couldn't acquire the ESP path, log about access errors (which is the only |
1165 | * error the find_esp_and_warn() won't log on its own) */ | |
fbf45d22 | 1166 | return log_error_errno(r, "Failed to determine ESP location: %m"); |
30b50477 ZJS |
1167 | if (r < 0) |
1168 | return r; | |
1169 | ||
fbf45d22 LP |
1170 | puts(arg_esp_path); |
1171 | } | |
1172 | ||
1173 | r = acquire_xbootldr(geteuid() != 0, &xbootldr_uuid); | |
1174 | if (arg_print_dollar_boot_path) { | |
1175 | if (r == -EACCES) | |
1176 | return log_error_errno(r, "Failed to determine XBOOTLDR location: %m"); | |
1177 | if (r < 0) | |
1178 | return r; | |
1179 | ||
f8a2b09a YW |
1180 | const char *path = arg_dollar_boot_path(); |
1181 | if (!path) | |
1182 | return log_error_errno(SYNTHETIC_ERRNO(EACCES), "Failed to determine XBOOTLDR location: %m"); | |
1183 | ||
1184 | puts(path); | |
30b50477 | 1185 | } |
551710cf | 1186 | |
fbf45d22 LP |
1187 | if (arg_print_esp_path || arg_print_dollar_boot_path) |
1188 | return 0; | |
1189 | ||
5caa3167 LP |
1190 | r = 0; /* If we couldn't determine the path, then don't consider that a problem from here on, just show what we |
1191 | * can show */ | |
1192 | ||
0221d68a | 1193 | (void) pager_open(arg_pager_flags); |
57db6f18 | 1194 | |
2f2c539c | 1195 | if (is_efi_boot()) { |
80641a81 LP |
1196 | static const struct { |
1197 | uint64_t flag; | |
1198 | const char *name; | |
1199 | } flags[] = { | |
22c5ff51 LP |
1200 | { EFI_LOADER_FEATURE_BOOT_COUNTING, "Boot counting" }, |
1201 | { EFI_LOADER_FEATURE_CONFIG_TIMEOUT, "Menu timeout control" }, | |
1202 | { EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT, "One-shot menu timeout control" }, | |
1203 | { EFI_LOADER_FEATURE_ENTRY_DEFAULT, "Default entry control" }, | |
1204 | { EFI_LOADER_FEATURE_ENTRY_ONESHOT, "One-shot entry control" }, | |
1205 | { EFI_LOADER_FEATURE_XBOOTLDR, "Support for XBOOTLDR partition" }, | |
1206 | { EFI_LOADER_FEATURE_RANDOM_SEED, "Support for passing random seed to OS" }, | |
80641a81 LP |
1207 | }; |
1208 | ||
81375b9b | 1209 | _cleanup_free_ char *fw_type = NULL, *fw_info = NULL, *loader = NULL, *loader_path = NULL, *stub = NULL; |
25579a43 | 1210 | sd_id128_t loader_part_uuid = SD_ID128_NULL; |
80641a81 LP |
1211 | uint64_t loader_features = 0; |
1212 | size_t i; | |
0974a682 | 1213 | |
2f2c539c LP |
1214 | read_loader_efi_var("LoaderFirmwareType", &fw_type); |
1215 | read_loader_efi_var("LoaderFirmwareInfo", &fw_info); | |
1216 | read_loader_efi_var("LoaderInfo", &loader); | |
81375b9b | 1217 | read_loader_efi_var("StubInfo", &stub); |
2f2c539c | 1218 | read_loader_efi_var("LoaderImageIdentifier", &loader_path); |
80641a81 | 1219 | (void) efi_loader_get_features(&loader_features); |
551710cf | 1220 | |
2f2c539c LP |
1221 | if (loader_path) |
1222 | efi_tilt_backslashes(loader_path); | |
1223 | ||
46fb255b ZJS |
1224 | k = efi_loader_get_device_part_uuid(&loader_part_uuid); |
1225 | if (k < 0 && k != -ENOENT) | |
1226 | r = log_warning_errno(k, "Failed to read EFI variable LoaderDevicePartUUID: %m"); | |
2f2c539c LP |
1227 | |
1228 | printf("System:\n"); | |
ba857253 | 1229 | printf(" Firmware: %s%s (%s)%s\n", ansi_highlight(), strna(fw_type), strna(fw_info), ansi_normal()); |
33987ba0 YW |
1230 | printf(" Secure Boot: %sd\n", enable_disable(is_efi_secure_boot())); |
1231 | printf(" Setup Mode: %s\n", is_efi_secure_boot_setup_mode() ? "setup" : "user"); | |
2f2c539c LP |
1232 | printf("\n"); |
1233 | ||
7fd66f3c | 1234 | printf("Current Boot Loader:\n"); |
ba857253 | 1235 | printf(" Product: %s%s%s\n", ansi_highlight(), strna(loader), ansi_normal()); |
80641a81 LP |
1236 | |
1237 | for (i = 0; i < ELEMENTSOF(flags); i++) { | |
1238 | ||
1239 | if (i == 0) | |
1240 | printf(" Features: "); | |
1241 | else | |
1242 | printf(" "); | |
1243 | ||
1244 | if (FLAGS_SET(loader_features, flags[i].flag)) | |
9a6f746f | 1245 | printf("%s%s%s %s\n", ansi_highlight_green(), special_glyph(SPECIAL_GLYPH_CHECK_MARK), ansi_normal(), flags[i].name); |
80641a81 | 1246 | else |
9a6f746f | 1247 | printf("%s%s%s %s\n", ansi_highlight_red(), special_glyph(SPECIAL_GLYPH_CROSS_MARK), ansi_normal(), flags[i].name); |
80641a81 LP |
1248 | } |
1249 | ||
81375b9b ДГ |
1250 | if (stub) |
1251 | printf(" Stub: %s\n", stub); | |
e28973ee | 1252 | if (!sd_id128_is_null(loader_part_uuid)) |
bd44566c | 1253 | printf(" ESP: /dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR "\n", |
2f2c539c LP |
1254 | SD_ID128_FORMAT_VAL(loader_part_uuid)); |
1255 | else | |
cd2d4c7f | 1256 | printf(" ESP: n/a\n"); |
9a6f746f | 1257 | printf(" File: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), strna(loader_path)); |
2f2c539c | 1258 | printf("\n"); |
d6e9a347 LP |
1259 | |
1260 | printf("Random Seed:\n"); | |
1261 | printf(" Passed to OS: %s\n", yes_no(access("/sys/firmware/efi/efivars/LoaderRandomSeed-4a67b082-0a4c-41cf-b6c7-440b29bb8c4f", F_OK) >= 0)); | |
1262 | printf(" System Token: %s\n", access("/sys/firmware/efi/efivars/LoaderSystemToken-4a67b082-0a4c-41cf-b6c7-440b29bb8c4f", F_OK) >= 0 ? "set" : "not set"); | |
1263 | ||
1264 | if (arg_esp_path) { | |
1265 | _cleanup_free_ char *p = NULL; | |
1266 | ||
1267 | p = path_join(arg_esp_path, "/loader/random-seed"); | |
1268 | if (!p) | |
1269 | return log_oom(); | |
1270 | ||
1271 | printf(" Exists: %s\n", yes_no(access(p, F_OK) >= 0)); | |
1272 | } | |
1273 | ||
1274 | printf("\n"); | |
2f2c539c | 1275 | } else |
cd2d4c7f | 1276 | printf("System:\n Not booted with EFI\n\n"); |
7b4d7cc0 | 1277 | |
fbf45d22 LP |
1278 | if (arg_esp_path) { |
1279 | k = status_binaries(arg_esp_path, esp_uuid); | |
ecec2a5d LP |
1280 | if (k < 0) |
1281 | r = k; | |
1282 | } | |
2f2c539c | 1283 | |
cd2d4c7f | 1284 | if (is_efi_boot()) { |
46fb255b ZJS |
1285 | k = status_variables(); |
1286 | if (k < 0) | |
1287 | r = k; | |
cd2d4c7f | 1288 | } |
0974a682 | 1289 | |
fbf45d22 | 1290 | if (arg_esp_path || arg_xbootldr_path) { |
81fed855 | 1291 | k = status_entries(arg_esp_path, esp_uuid, arg_xbootldr_path, xbootldr_uuid); |
ecec2a5d LP |
1292 | if (k < 0) |
1293 | r = k; | |
1294 | } | |
7e87c7d9 | 1295 | |
46fb255b | 1296 | return r; |
2f2c539c | 1297 | } |
7b4d7cc0 | 1298 | |
7e87c7d9 | 1299 | static int verb_list(int argc, char *argv[], void *userdata) { |
5caa3167 | 1300 | _cleanup_(boot_config_free) BootConfig config = {}; |
5caa3167 | 1301 | int r; |
7e87c7d9 | 1302 | |
5caa3167 LP |
1303 | /* If we lack privileges we invoke find_esp_and_warn() in "unprivileged mode" here, which does two things: turn |
1304 | * off logging about access errors and turn off potentially privileged device probing. Here we're interested in | |
1305 | * the latter but not the former, hence request the mode, and log about EACCES. */ | |
7e87c7d9 | 1306 | |
fbf45d22 | 1307 | r = acquire_esp(geteuid() != 0, NULL, NULL, NULL, NULL); |
5caa3167 LP |
1308 | if (r == -EACCES) /* We really need the ESP path for this call, hence also log about access errors */ |
1309 | return log_error_errno(r, "Failed to determine ESP: %m"); | |
7e87c7d9 ZJS |
1310 | if (r < 0) |
1311 | return r; | |
1312 | ||
fbf45d22 LP |
1313 | r = acquire_xbootldr(geteuid() != 0, NULL); |
1314 | if (r == -EACCES) | |
1315 | return log_error_errno(r, "Failed to determine XBOOTLDR partition: %m"); | |
1316 | if (r < 0) | |
1317 | return r; | |
1318 | ||
1319 | r = boot_entries_load_config(arg_esp_path, arg_xbootldr_path, &config); | |
7e87c7d9 | 1320 | if (r < 0) |
21f7a622 | 1321 | return r; |
7e87c7d9 | 1322 | |
93f14ce2 | 1323 | (void) boot_entries_augment_from_loader(&config, false); |
bd2865ca | 1324 | |
20a28174 LP |
1325 | if (config.n_entries == 0) |
1326 | log_info("No boot loader entries found."); | |
1327 | else { | |
1328 | size_t n; | |
7e87c7d9 | 1329 | |
0221d68a | 1330 | (void) pager_open(arg_pager_flags); |
57db6f18 | 1331 | |
20a28174 | 1332 | printf("Boot Loader Entries:\n"); |
7e87c7d9 | 1333 | |
20a28174 LP |
1334 | for (n = 0; n < config.n_entries; n++) { |
1335 | r = boot_entry_show(config.entries + n, n == (size_t) config.default_entry); | |
1336 | if (r < 0) | |
1337 | return r; | |
7e87c7d9 | 1338 | |
4629499e LP |
1339 | if (n+1 < config.n_entries) |
1340 | putchar('\n'); | |
7e87c7d9 | 1341 | } |
cd2d4c7f | 1342 | } |
0974a682 | 1343 | |
7e87c7d9 | 1344 | return 0; |
2f2c539c | 1345 | } |
7b4d7cc0 | 1346 | |
e44c3229 LP |
1347 | static int install_random_seed(const char *esp) { |
1348 | _cleanup_(unlink_and_freep) char *tmp = NULL; | |
1349 | _cleanup_free_ void *buffer = NULL; | |
1350 | _cleanup_free_ char *path = NULL; | |
1351 | _cleanup_close_ int fd = -1; | |
1352 | size_t sz, token_size; | |
1353 | ssize_t n; | |
1354 | int r; | |
1355 | ||
1356 | assert(esp); | |
1357 | ||
1358 | path = path_join(esp, "/loader/random-seed"); | |
1359 | if (!path) | |
1360 | return log_oom(); | |
1361 | ||
1362 | sz = random_pool_size(); | |
1363 | ||
1364 | buffer = malloc(sz); | |
1365 | if (!buffer) | |
1366 | return log_oom(); | |
1367 | ||
1368 | r = genuine_random_bytes(buffer, sz, RANDOM_BLOCK); | |
1369 | if (r < 0) | |
a4d20801 | 1370 | return log_error_errno(r, "Failed to acquire random seed: %m"); |
e44c3229 LP |
1371 | |
1372 | r = tempfn_random(path, "bootctl", &tmp); | |
1373 | if (r < 0) | |
1374 | return log_oom(); | |
1375 | ||
1376 | fd = open(tmp, O_CREAT|O_EXCL|O_NOFOLLOW|O_NOCTTY|O_WRONLY|O_CLOEXEC, 0600); | |
1377 | if (fd < 0) { | |
1378 | tmp = mfree(tmp); | |
1379 | return log_error_errno(fd, "Failed to open random seed file for writing: %m"); | |
1380 | } | |
1381 | ||
1382 | n = write(fd, buffer, sz); | |
1383 | if (n < 0) | |
1384 | return log_error_errno(errno, "Failed to write random seed file: %m"); | |
1385 | if ((size_t) n != sz) | |
1386 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Short write while writing random seed file."); | |
1387 | ||
1388 | if (rename(tmp, path) < 0) | |
1389 | return log_error_errno(r, "Failed to move random seed file into place: %m"); | |
1390 | ||
1391 | tmp = mfree(tmp); | |
1392 | ||
a4d20801 | 1393 | log_info("Random seed file %s successfully written (%zu bytes).", path, sz); |
e44c3229 LP |
1394 | |
1395 | if (!arg_touch_variables) | |
1396 | return 0; | |
1397 | ||
1398 | if (!is_efi_boot()) { | |
1399 | log_notice("Not booted with EFI, skipping EFI variable setup."); | |
1400 | return 0; | |
1401 | } | |
1402 | ||
1403 | r = getenv_bool("SYSTEMD_WRITE_SYSTEM_TOKEN"); | |
1404 | if (r < 0) { | |
1405 | if (r != -ENXIO) | |
1406 | log_warning_errno(r, "Failed to parse $SYSTEMD_WRITE_SYSTEM_TOKEN, ignoring."); | |
1407 | ||
1408 | if (detect_vm() > 0) { | |
1409 | /* Let's not write a system token if we detect we are running in a VM | |
1410 | * environment. Why? Our default security model for the random seed uses the system | |
1411 | * token as a mechanism to ensure we are not vulnerable to golden master sloppiness | |
1412 | * issues, i.e. that people initialize the random seed file, then copy the image to | |
1413 | * many systems and end up with the same random seed in each that is assumed to be | |
1414 | * valid but in reality is the same for all machines. By storing a system token in | |
1415 | * the EFI variable space we can make sure that even though the random seeds on disk | |
1416 | * are all the same they will be different on each system under the assumption that | |
1417 | * the EFI variable space is maintained separate from the random seed storage. That | |
1418 | * is generally the case on physical systems, as the ESP is stored on persistant | |
1419 | * storage, and the EFI variables in NVRAM. However in virtualized environments this | |
1420 | * is generally not true: the EFI variable set is typically stored along with the | |
1421 | * disk image itself. For example, using the OVMF EFI firmware the EFI variables are | |
1422 | * stored in a file in the ESP itself. */ | |
1423 | ||
1424 | log_notice("Not installing system token, since we are running in a virtualized environment."); | |
1425 | return 0; | |
1426 | } | |
1427 | } else if (r == 0) { | |
1428 | log_notice("Not writing system token, because $SYSTEMD_WRITE_SYSTEM_TOKEN is set to false."); | |
1429 | return 0; | |
1430 | } | |
1431 | ||
1432 | r = efi_get_variable(EFI_VENDOR_LOADER, "LoaderSystemToken", NULL, NULL, &token_size); | |
1433 | if (r < 0) { | |
1434 | if (r != -ENOENT) | |
1435 | return log_error_errno(r, "Failed to test system token validity: %m"); | |
1436 | } else { | |
1437 | if (token_size >= sz) { | |
1438 | /* Let's avoid writes if we can, and initialize this only once. */ | |
1439 | log_debug("System token already written, not updating."); | |
1440 | return 0; | |
1441 | } | |
1442 | ||
1443 | log_debug("Existing system token size (%zu) does not match our expectations (%zu), replacing.", token_size, sz); | |
1444 | } | |
1445 | ||
1446 | r = genuine_random_bytes(buffer, sz, RANDOM_BLOCK); | |
1447 | if (r < 0) | |
1448 | return log_error_errno(r, "Failed to acquire random seed: %m"); | |
1449 | ||
1450 | /* Let's write this variable with an umask in effect, so that unprivileged users can't see the token | |
1451 | * and possibly get identification information or too much insight into the kernel's entropy pool | |
1452 | * state. */ | |
1453 | RUN_WITH_UMASK(0077) { | |
1454 | r = efi_set_variable(EFI_VENDOR_LOADER, "LoaderSystemToken", buffer, sz); | |
1455 | if (r < 0) | |
1456 | return log_error_errno(r, "Failed to set LoaderSystemToken EFI variable: %m"); | |
1457 | } | |
1458 | ||
1459 | log_info("Successfully initialized system token in EFI variable with %zu bytes.", sz); | |
1460 | return 0; | |
1461 | } | |
1462 | ||
fbf45d22 LP |
1463 | static int sync_everything(void) { |
1464 | int ret = 0, k; | |
e0e8d177 | 1465 | |
fbf45d22 LP |
1466 | if (arg_esp_path) { |
1467 | k = syncfs_path(AT_FDCWD, arg_esp_path); | |
1468 | if (k < 0) | |
1469 | ret = log_error_errno(k, "Failed to synchronize the ESP '%s': %m", arg_esp_path); | |
1470 | } | |
e0e8d177 | 1471 | |
fbf45d22 LP |
1472 | if (arg_xbootldr_path) { |
1473 | k = syncfs_path(AT_FDCWD, arg_xbootldr_path); | |
1474 | if (k < 0) | |
1475 | ret = log_error_errno(k, "Failed to synchronize $BOOT '%s': %m", arg_xbootldr_path); | |
1476 | } | |
e0e8d177 | 1477 | |
fbf45d22 | 1478 | return ret; |
e0e8d177 LP |
1479 | } |
1480 | ||
2f2c539c | 1481 | static int verb_install(int argc, char *argv[], void *userdata) { |
2f2c539c LP |
1482 | sd_id128_t uuid = SD_ID128_NULL; |
1483 | uint64_t pstart = 0, psize = 0; | |
1484 | uint32_t part = 0; | |
341890de | 1485 | sd_id128_t machine_id; |
2f2c539c LP |
1486 | bool install; |
1487 | int r; | |
1488 | ||
5caa3167 | 1489 | r = acquire_esp(false, &part, &pstart, &psize, &uuid); |
2f2c539c LP |
1490 | if (r < 0) |
1491 | return r; | |
1492 | ||
fbf45d22 LP |
1493 | r = acquire_xbootldr(false, NULL); |
1494 | if (r < 0) | |
1495 | return r; | |
1496 | ||
341890de ZJS |
1497 | r = sd_id128_get_machine(&machine_id); |
1498 | if (r < 0) | |
1499 | return log_error_errno(r, "Failed to get machine id: %m"); | |
1500 | ||
2f2c539c LP |
1501 | install = streq(argv[0], "install"); |
1502 | ||
1503 | RUN_WITH_UMASK(0002) { | |
fbf45d22 LP |
1504 | if (install) { |
1505 | /* Don't create any of these directories when we are just updating. When we update | |
1506 | * we'll drop-in our files (unless there are newer ones already), but we won't create | |
1507 | * the directories for them in the first place. */ | |
e44c3229 LP |
1508 | r = create_subdirs(arg_esp_path, esp_subdirs); |
1509 | if (r < 0) | |
1510 | return r; | |
1511 | ||
1512 | r = create_subdirs(arg_dollar_boot_path(), dollar_boot_subdirs); | |
fbf45d22 LP |
1513 | if (r < 0) |
1514 | return r; | |
1515 | } | |
1516 | ||
1517 | r = install_binaries(arg_esp_path, install); | |
0974a682 | 1518 | if (r < 0) |
d3226d77 | 1519 | return r; |
0974a682 | 1520 | |
2f2c539c | 1521 | if (install) { |
341890de | 1522 | r = install_loader_config(arg_esp_path, machine_id); |
fbf45d22 LP |
1523 | if (r < 0) |
1524 | return r; | |
1525 | ||
e44c3229 LP |
1526 | r = install_machine_id_directory(arg_dollar_boot_path(), machine_id); |
1527 | if (r < 0) | |
1528 | return r; | |
1529 | ||
1530 | r = install_random_seed(arg_esp_path); | |
d3226d77 ZJS |
1531 | if (r < 0) |
1532 | return r; | |
1533 | } | |
2f2c539c | 1534 | } |
0974a682 | 1535 | |
fbf45d22 | 1536 | (void) sync_everything(); |
e0e8d177 | 1537 | |
2f2c539c | 1538 | if (arg_touch_variables) |
fbf45d22 | 1539 | r = install_variables(arg_esp_path, |
2f2c539c LP |
1540 | part, pstart, psize, uuid, |
1541 | "/EFI/systemd/systemd-boot" EFI_MACHINE_TYPE_NAME ".efi", | |
1542 | install); | |
7b4d7cc0 | 1543 | |
2f2c539c LP |
1544 | return r; |
1545 | } | |
0974a682 | 1546 | |
2f2c539c | 1547 | static int verb_remove(int argc, char *argv[], void *userdata) { |
e44c3229 | 1548 | sd_id128_t uuid = SD_ID128_NULL, machine_id; |
fbf45d22 | 1549 | int r, q; |
0974a682 | 1550 | |
5caa3167 | 1551 | r = acquire_esp(false, NULL, NULL, NULL, &uuid); |
2f2c539c LP |
1552 | if (r < 0) |
1553 | return r; | |
1554 | ||
fbf45d22 LP |
1555 | r = acquire_xbootldr(false, NULL); |
1556 | if (r < 0) | |
1557 | return r; | |
2f2c539c | 1558 | |
e44c3229 LP |
1559 | r = sd_id128_get_machine(&machine_id); |
1560 | if (r < 0) | |
1561 | return log_error_errno(r, "Failed to get machine id: %m"); | |
1562 | ||
fbf45d22 | 1563 | r = remove_binaries(arg_esp_path); |
e0e8d177 | 1564 | |
e44c3229 | 1565 | q = remove_file(arg_esp_path, "/loader/loader.conf"); |
fbf45d22 LP |
1566 | if (q < 0 && r >= 0) |
1567 | r = q; | |
1568 | ||
e44c3229 | 1569 | q = remove_file(arg_esp_path, "/loader/random-seed"); |
fbf45d22 LP |
1570 | if (q < 0 && r >= 0) |
1571 | r = q; | |
2f2c539c | 1572 | |
e44c3229 | 1573 | q = remove_subdirs(arg_esp_path, esp_subdirs); |
fbf45d22 LP |
1574 | if (q < 0 && r >= 0) |
1575 | r = q; | |
1576 | ||
e44c3229 LP |
1577 | q = remove_subdirs(arg_esp_path, dollar_boot_subdirs); |
1578 | if (q < 0 && r >= 0) | |
1579 | r = q; | |
fbf45d22 | 1580 | |
e44c3229 LP |
1581 | q = remove_machine_id_directory(arg_esp_path, machine_id); |
1582 | if (q < 0 && r >= 0) | |
1583 | r = 1; | |
1584 | ||
1585 | if (arg_xbootldr_path) { | |
1586 | /* Remove the latter two also in the XBOOTLDR partition if it exists */ | |
1587 | q = remove_subdirs(arg_xbootldr_path, dollar_boot_subdirs); | |
1588 | if (q < 0 && r >= 0) | |
1589 | r = q; | |
1590 | ||
1591 | q = remove_machine_id_directory(arg_xbootldr_path, machine_id); | |
fbf45d22 | 1592 | if (q < 0 && r >= 0) |
2f2c539c | 1593 | r = q; |
7b4d7cc0 KS |
1594 | } |
1595 | ||
e44c3229 LP |
1596 | (void) sync_everything(); |
1597 | ||
1598 | if (!arg_touch_variables) | |
1599 | return r; | |
1600 | ||
1601 | q = remove_variables(uuid, "/EFI/systemd/systemd-boot" EFI_MACHINE_TYPE_NAME ".efi", true); | |
1602 | if (q < 0 && r >= 0) | |
1603 | r = q; | |
1604 | ||
1605 | q = remove_loader_variables(); | |
1606 | if (q < 0 && r >= 0) | |
1607 | r = q; | |
1608 | ||
d3226d77 | 1609 | return r; |
7b4d7cc0 KS |
1610 | } |
1611 | ||
a2aa605d LP |
1612 | static int verb_is_installed(int argc, char *argv[], void *userdata) { |
1613 | _cleanup_free_ char *p = NULL; | |
1614 | int r; | |
1615 | ||
1616 | r = acquire_esp(false, NULL, NULL, NULL, NULL); | |
1617 | if (r < 0) | |
1618 | return r; | |
1619 | ||
1620 | /* Tests whether systemd-boot is installed. It's not obvious what to use as check here: we could | |
1621 | * check EFI variables, we could check what binary /EFI/BOOT/BOOT*.EFI points to, or whether the | |
1622 | * loader entries directory exists. Here we opted to check whether /EFI/systemd/ is non-empty, which | |
1623 | * should be a suitable and very minimal check for a number of reasons: | |
1624 | * | |
1625 | * → The check is architecture independent (i.e. we check if any systemd-boot loader is installed, not a | |
1626 | * specific one.) | |
1627 | * | |
1628 | * → It doesn't assume we are the only boot loader (i.e doesn't check if we own the main | |
1629 | * /EFI/BOOT/BOOT*.EFI fallback binary. | |
1630 | * | |
1631 | * → It specifically checks for systemd-boot, not for other boot loaders (which a check for | |
1632 | * /boot/loader/entries would do). */ | |
1633 | ||
1634 | p = path_join(arg_esp_path, "/EFI/systemd/"); | |
1635 | if (!p) | |
1636 | return log_oom(); | |
1637 | ||
1638 | r = dir_is_empty(p); | |
1639 | if (r > 0 || r == -ENOENT) { | |
1640 | puts("no"); | |
1641 | return EXIT_FAILURE; | |
1642 | } | |
1643 | if (r < 0) | |
1644 | return log_error_errno(r, "Failed to detect whether systemd-boot is installed: %m"); | |
1645 | ||
1646 | puts("yes"); | |
1647 | return EXIT_SUCCESS; | |
1648 | } | |
1649 | ||
d88c96ff LP |
1650 | static int verb_set_default(int argc, char *argv[], void *userdata) { |
1651 | const char *name; | |
1652 | int r; | |
1653 | ||
baaa35ad ZJS |
1654 | if (!is_efi_boot()) |
1655 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
1656 | "Not booted with UEFI."); | |
d88c96ff LP |
1657 | |
1658 | if (access("/sys/firmware/efi/efivars/LoaderInfo-4a67b082-0a4c-41cf-b6c7-440b29bb8c4f", F_OK) < 0) { | |
1659 | if (errno == ENOENT) { | |
1660 | log_error_errno(errno, "Not booted with a supported boot loader."); | |
1661 | return -EOPNOTSUPP; | |
1662 | } | |
1663 | ||
1664 | return log_error_errno(errno, "Failed to detect whether boot loader supports '%s' operation: %m", argv[0]); | |
1665 | } | |
1666 | ||
baaa35ad ZJS |
1667 | if (detect_container() > 0) |
1668 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
1669 | "'%s' operation not supported in a container.", | |
1670 | argv[0]); | |
d88c96ff | 1671 | |
baaa35ad ZJS |
1672 | if (!arg_touch_variables) |
1673 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1674 | "'%s' operation cannot be combined with --touch-variables=no.", | |
1675 | argv[0]); | |
d88c96ff LP |
1676 | |
1677 | name = streq(argv[0], "set-default") ? "LoaderEntryDefault" : "LoaderEntryOneShot"; | |
1678 | ||
1679 | if (isempty(argv[1])) { | |
1680 | r = efi_set_variable(EFI_VENDOR_LOADER, name, NULL, 0); | |
1681 | if (r < 0 && r != -ENOENT) | |
1682 | return log_error_errno(r, "Failed to remove EFI variale: %m"); | |
1683 | } else { | |
1684 | _cleanup_free_ char16_t *encoded = NULL; | |
1685 | ||
1686 | encoded = utf8_to_utf16(argv[1], strlen(argv[1])); | |
1687 | if (!encoded) | |
1688 | return log_oom(); | |
1689 | ||
1690 | r = efi_set_variable(EFI_VENDOR_LOADER, name, encoded, char16_strlen(encoded) * 2 + 2); | |
1691 | if (r < 0) | |
1692 | return log_error_errno(r, "Failed to update EFI variable: %m"); | |
1693 | } | |
1694 | ||
1695 | return 0; | |
1696 | } | |
1697 | ||
e44c3229 LP |
1698 | static int verb_random_seed(int argc, char *argv[], void *userdata) { |
1699 | int r; | |
1700 | ||
1701 | r = acquire_esp(false, NULL, NULL, NULL, NULL); | |
1702 | if (r < 0) | |
1703 | return r; | |
1704 | ||
1705 | r = install_random_seed(arg_esp_path); | |
1706 | if (r < 0) | |
1707 | return r; | |
1708 | ||
1709 | (void) sync_everything(); | |
1710 | return 0; | |
1711 | } | |
1712 | ||
2f2c539c | 1713 | static int bootctl_main(int argc, char *argv[]) { |
2f2c539c | 1714 | static const Verb verbs[] = { |
a2aa605d LP |
1715 | { "help", VERB_ANY, VERB_ANY, 0, help }, |
1716 | { "status", VERB_ANY, 1, VERB_DEFAULT, verb_status }, | |
1717 | { "install", VERB_ANY, 1, 0, verb_install }, | |
1718 | { "update", VERB_ANY, 1, 0, verb_install }, | |
1719 | { "remove", VERB_ANY, 1, 0, verb_remove }, | |
1720 | { "random-seed", VERB_ANY, 1, 0, verb_random_seed }, | |
1721 | { "is-installed", VERB_ANY, 1, 0, verb_is_installed }, | |
1722 | { "list", VERB_ANY, 1, 0, verb_list }, | |
1723 | { "set-default", 2, 2, 0, verb_set_default }, | |
1724 | { "set-oneshot", 2, 2, 0, verb_set_default }, | |
2f2c539c LP |
1725 | {} |
1726 | }; | |
1727 | ||
1728 | return dispatch_verb(argc, argv, verbs, NULL); | |
1729 | } | |
1730 | ||
608f8ec9 | 1731 | static int run(int argc, char *argv[]) { |
601185b4 | 1732 | int r; |
7b4d7cc0 KS |
1733 | |
1734 | log_parse_environment(); | |
1735 | log_open(); | |
1736 | ||
341890de | 1737 | /* If we run in a container, automatically turn off EFI file system access */ |
2f2c539c LP |
1738 | if (detect_container() > 0) |
1739 | arg_touch_variables = false; | |
1740 | ||
7b4d7cc0 | 1741 | r = parse_argv(argc, argv); |
601185b4 | 1742 | if (r <= 0) |
608f8ec9 | 1743 | return r; |
57db6f18 | 1744 | |
608f8ec9 | 1745 | return bootctl_main(argc, argv); |
7b4d7cc0 | 1746 | } |
608f8ec9 YW |
1747 | |
1748 | DEFINE_MAIN_FUNCTION(run); |