]> git.ipfire.org Git - thirdparty/systemd.git/blob - src/boot/bootctl.c
projects / thirdparty / systemd.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge pull request #24646 from yuwata/udev-node-symlink_atomic
[thirdparty/systemd.git] / src / boot / bootctl.c
1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
2
3 #include <ctype.h>
4 #include <errno.h>
5 #include <getopt.h>
6 #include <limits.h>
7 #include <linux/magic.h>
8 #include <stdbool.h>
9 #include <stdlib.h>
10 #include <sys/mman.h>
11 #include <unistd.h>
12
13 #include "sd-id128.h"
14
15 #include "alloc-util.h"
16 #include "blkid-util.h"
17 #include "bootspec.h"
18 #include "chase-symlinks.h"
19 #include "copy.h"
20 #include "devnum-util.h"
21 #include "dirent-util.h"
22 #include "dissect-image.h"
23 #include "efi-api.h"
24 #include "efi-loader.h"
25 #include "efivars.h"
26 #include "env-file.h"
27 #include "env-util.h"
28 #include "escape.h"
29 #include "fd-util.h"
30 #include "fileio.h"
31 #include "find-esp.h"
32 #include "fs-util.h"
33 #include "glyph-util.h"
34 #include "main-func.h"
35 #include "mkdir.h"
36 #include "mount-util.h"
37 #include "os-util.h"
38 #include "pager.h"
39 #include "parse-argument.h"
40 #include "parse-util.h"
41 #include "pretty-print.h"
42 #include "random-util.h"
43 #include "rm-rf.h"
44 #include "stat-util.h"
45 #include "stdio-util.h"
46 #include "string-table.h"
47 #include "string-util.h"
48 #include "strv.h"
49 #include "sync-util.h"
50 #include "terminal-util.h"
51 #include "tmpfile-util.h"
52 #include "tmpfile-util-label.h"
53 #include "tpm2-util.h"
54 #include "umask-util.h"
55 #include "utf8.h"
56 #include "util.h"
57 #include "verbs.h"
58 #include "virt.h"
59
60 /* EFI_BOOT_OPTION_DESCRIPTION_MAX sets the maximum length for the boot option description
61 * stored in NVRAM. The UEFI spec does not specify a minimum or maximum length for this
62 * string, but we limit the length to something reasonable to prevent from the firmware
63 * having to deal with a potentially too long string. */
64 #define EFI_BOOT_OPTION_DESCRIPTION_MAX ((size_t) 255)
65
66 static char *arg_esp_path = NULL;
67 static char *arg_xbootldr_path = NULL;
68 static bool arg_print_esp_path = false;
69 static bool arg_print_dollar_boot_path = false;
70 static bool arg_touch_variables = true;
71 static PagerFlags arg_pager_flags = 0;
72 static bool arg_graceful = false;
73 static bool arg_quiet = false;
74 static int arg_make_entry_directory = false; /* tri-state: < 0 for automatic logic */
75 static sd_id128_t arg_machine_id = SD_ID128_NULL;
76 static char *arg_install_layout = NULL;
77 static enum {
78 ARG_ENTRY_TOKEN_MACHINE_ID,
79 ARG_ENTRY_TOKEN_OS_IMAGE_ID,
80 ARG_ENTRY_TOKEN_OS_ID,
81 ARG_ENTRY_TOKEN_LITERAL,
82 ARG_ENTRY_TOKEN_AUTO,
83 } arg_entry_token_type = ARG_ENTRY_TOKEN_AUTO;
84 static char *arg_entry_token = NULL;
85 static JsonFormatFlags arg_json_format_flags = JSON_FORMAT_OFF;
86 static bool arg_arch_all = false;
87 static char *arg_root = NULL;
88 static char *arg_image = NULL;
89 static enum {
90 ARG_INSTALL_SOURCE_IMAGE,
91 ARG_INSTALL_SOURCE_HOST,
92 ARG_INSTALL_SOURCE_AUTO,
93 } arg_install_source = ARG_INSTALL_SOURCE_AUTO;
94 static char *arg_efi_boot_option_description = NULL;
95
96 STATIC_DESTRUCTOR_REGISTER(arg_esp_path, freep);
97 STATIC_DESTRUCTOR_REGISTER(arg_xbootldr_path, freep);
98 STATIC_DESTRUCTOR_REGISTER(arg_install_layout, freep);
99 STATIC_DESTRUCTOR_REGISTER(arg_entry_token, freep);
100 STATIC_DESTRUCTOR_REGISTER(arg_root, freep);
101 STATIC_DESTRUCTOR_REGISTER(arg_image, freep);
102 STATIC_DESTRUCTOR_REGISTER(arg_efi_boot_option_description, freep);
103
104 static const char *arg_dollar_boot_path(void) {
105 /* $BOOT shall be the XBOOTLDR partition if it exists, and otherwise the ESP */
106 return arg_xbootldr_path ?: arg_esp_path;
107 }
108
109 static const char *pick_efi_boot_option_description(void) {
110 return arg_efi_boot_option_description ?: "Linux Boot Manager";
111 }
112
113 static int acquire_esp(
114 bool unprivileged_mode,
115 bool graceful,
116 uint32_t *ret_part,
117 uint64_t *ret_pstart,
118 uint64_t *ret_psize,
119 sd_id128_t *ret_uuid,
120 dev_t *ret_devid) {
121
122 char *np;
123 int r;
124
125 /* Find the ESP, and log about errors. Note that find_esp_and_warn() will log in all error cases on
126 * its own, except for ENOKEY (which is good, we want to show our own message in that case,
127 * suggesting use of --esp-path=) and EACCESS (only when we request unprivileged mode; in this case
128 * we simply eat up the error here, so that --list and --status work too, without noise about
129 * this). */
130
131 r = find_esp_and_warn(arg_root, arg_esp_path, unprivileged_mode, &np, ret_part, ret_pstart, ret_psize, ret_uuid, ret_devid);
132 if (r == -ENOKEY) {
133 if (graceful)
134 return log_full_errno(arg_quiet ? LOG_DEBUG : LOG_INFO, r,
135 "Couldn't find EFI system partition, skipping.");
136
137 return log_error_errno(r,
138 "Couldn't find EFI system partition. It is recommended to mount it to /boot or /efi.\n"
139 "Alternatively, use --esp-path= to specify path to mount point.");
140 }
141 if (r < 0)
142 return r;
143
144 free_and_replace(arg_esp_path, np);
145 log_debug("Using EFI System Partition at %s.", arg_esp_path);
146
147 return 0;
148 }
149
150 static int acquire_xbootldr(
151 bool unprivileged_mode,
152 sd_id128_t *ret_uuid,
153 dev_t *ret_devid) {
154
155 char *np;
156 int r;
157
158 r = find_xbootldr_and_warn(arg_root, arg_xbootldr_path, unprivileged_mode, &np, ret_uuid, ret_devid);
159 if (r == -ENOKEY) {
160 log_debug_errno(r, "Didn't find an XBOOTLDR partition, using the ESP as $BOOT.");
161 arg_xbootldr_path = mfree(arg_xbootldr_path);
162
163 if (ret_uuid)
164 *ret_uuid = SD_ID128_NULL;
165 if (ret_devid)
166 *ret_devid = 0;
167 return 0;
168 }
169 if (r < 0)
170 return r;
171
172 free_and_replace(arg_xbootldr_path, np);
173 log_debug("Using XBOOTLDR partition at %s as $BOOT.", arg_xbootldr_path);
174
175 return 1;
176 }
177
178 static int load_etc_machine_id(void) {
179 int r;
180
181 r = sd_id128_get_machine(&arg_machine_id);
182 if (IN_SET(r, -ENOENT, -ENOMEDIUM)) /* Not set or empty */
183 return 0;
184 if (r < 0)
185 return log_error_errno(r, "Failed to get machine-id: %m");
186
187 log_debug("Loaded machine ID %s from /etc/machine-id.", SD_ID128_TO_STRING(arg_machine_id));
188 return 0;
189 }
190
191 static int load_etc_machine_info(void) {
192 /* systemd v250 added support to store the kernel-install layout setting and the machine ID to use
193 * for setting up the ESP in /etc/machine-info. The newer /etc/kernel/entry-token file, as well as
194 * the $layout field in /etc/kernel/install.conf are better replacements for this though, hence this
195 * has been deprecated and is only returned for compatibility. */
196 _cleanup_free_ char *s = NULL, *layout = NULL;
197 int r;
198
199 r = parse_env_file(NULL, "/etc/machine-info",
200 "KERNEL_INSTALL_LAYOUT", &layout,
201 "KERNEL_INSTALL_MACHINE_ID", &s);
202 if (r == -ENOENT)
203 return 0;
204 if (r < 0)
205 return log_error_errno(r, "Failed to parse /etc/machine-info: %m");
206
207 if (!isempty(s)) {
208 if (!arg_quiet)
209 log_notice("Read $KERNEL_INSTALL_MACHINE_ID from /etc/machine-info. "
210 "Please move it to /etc/kernel/entry-token.");
211
212 r = sd_id128_from_string(s, &arg_machine_id);
213 if (r < 0)
214 return log_error_errno(r, "Failed to parse KERNEL_INSTALL_MACHINE_ID=%s in /etc/machine-info: %m", s);
215
216 log_debug("Loaded KERNEL_INSTALL_MACHINE_ID=%s from KERNEL_INSTALL_MACHINE_ID in /etc/machine-info.",
217 SD_ID128_TO_STRING(arg_machine_id));
218 }
219
220 if (!isempty(layout)) {
221 if (!arg_quiet)
222 log_notice("Read $KERNEL_INSTALL_LAYOUT from /etc/machine-info. "
223 "Please move it to the layout= setting of /etc/kernel/install.conf.");
224
225 log_debug("KERNEL_INSTALL_LAYOUT=%s is specified in /etc/machine-info.", layout);
226 free_and_replace(arg_install_layout, layout);
227 }
228
229 return 0;
230 }
231
232 static int load_etc_kernel_install_conf(void) {
233 _cleanup_free_ char *layout = NULL;
234 int r;
235
236 r = parse_env_file(NULL, "/etc/kernel/install.conf",
237 "layout", &layout);
238 if (r == -ENOENT)
239 return 0;
240 if (r < 0)
241 return log_error_errno(r, "Failed to parse /etc/kernel/install.conf: %m");
242
243 if (!isempty(layout)) {
244 log_debug("layout=%s is specified in /etc/machine-info.", layout);
245 free_and_replace(arg_install_layout, layout);
246 }
247
248 return 0;
249 }
250
251 static int settle_entry_token(void) {
252 int r;
253
254 switch (arg_entry_token_type) {
255
256 case ARG_ENTRY_TOKEN_AUTO: {
257 _cleanup_free_ char *buf = NULL;
258 r = read_one_line_file("/etc/kernel/entry-token", &buf);
259 if (r < 0 && r != -ENOENT)
260 return log_error_errno(r, "Failed to read /etc/kernel/entry-token: %m");
261
262 if (!isempty(buf)) {
263 free_and_replace(arg_entry_token, buf);
264 arg_entry_token_type = ARG_ENTRY_TOKEN_LITERAL;
265 } else if (sd_id128_is_null(arg_machine_id)) {
266 _cleanup_free_ char *id = NULL, *image_id = NULL;
267
268 r = parse_os_release(NULL,
269 "IMAGE_ID", &image_id,
270 "ID", &id);
271 if (r < 0)
272 return log_error_errno(r, "Failed to load /etc/os-release: %m");
273
274 if (!isempty(image_id)) {
275 free_and_replace(arg_entry_token, image_id);
276 arg_entry_token_type = ARG_ENTRY_TOKEN_OS_IMAGE_ID;
277 } else if (!isempty(id)) {
278 free_and_replace(arg_entry_token, id);
279 arg_entry_token_type = ARG_ENTRY_TOKEN_OS_ID;
280 } else
281 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No machine ID set, and /etc/os-release carries no ID=/IMAGE_ID= fields.");
282 } else {
283 r = free_and_strdup_warn(&arg_entry_token, SD_ID128_TO_STRING(arg_machine_id));
284 if (r < 0)
285 return r;
286
287 arg_entry_token_type = ARG_ENTRY_TOKEN_MACHINE_ID;
288 }
289
290 break;
291 }
292
293 case ARG_ENTRY_TOKEN_MACHINE_ID:
294 if (sd_id128_is_null(arg_machine_id))
295 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No machine ID set.");
296
297 r = free_and_strdup_warn(&arg_entry_token, SD_ID128_TO_STRING(arg_machine_id));
298 if (r < 0)
299 return r;
300
301 break;
302
303 case ARG_ENTRY_TOKEN_OS_IMAGE_ID: {
304 _cleanup_free_ char *buf = NULL;
305
306 r = parse_os_release(NULL, "IMAGE_ID", &buf);
307 if (r < 0)
308 return log_error_errno(r, "Failed to load /etc/os-release: %m");
309
310 if (isempty(buf))
311 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "IMAGE_ID= field not set in /etc/os-release.");
312
313 free_and_replace(arg_entry_token, buf);
314 break;
315 }
316
317 case ARG_ENTRY_TOKEN_OS_ID: {
318 _cleanup_free_ char *buf = NULL;
319
320 r = parse_os_release(NULL, "ID", &buf);
321 if (r < 0)
322 return log_error_errno(r, "Failed to load /etc/os-release: %m");
323
324 if (isempty(buf))
325 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "ID= field not set in /etc/os-release.");
326
327 free_and_replace(arg_entry_token, buf);
328 break;
329 }
330
331 case ARG_ENTRY_TOKEN_LITERAL:
332 assert(!isempty(arg_entry_token)); /* already filled in by command line parser */
333 break;
334 }
335
336 if (isempty(arg_entry_token) || !(utf8_is_valid(arg_entry_token) && string_is_safe(arg_entry_token)))
337 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Selected entry token not valid: %s", arg_entry_token);
338
339 log_debug("Using entry token: %s", arg_entry_token);
340 return 0;
341 }
342
343 static bool use_boot_loader_spec_type1(void) {
344 /* If the layout is not specified, or if it is set explicitly to "bls" we assume Boot Loader
345 * Specification Type #1 is the chosen format for our boot loader entries */
346 return !arg_install_layout || streq(arg_install_layout, "bls");
347 }
348
349 static int settle_make_entry_directory(void) {
350 int r;
351
352 r = load_etc_machine_id();
353 if (r < 0)
354 return r;
355
356 r = load_etc_machine_info();
357 if (r < 0)
358 return r;
359
360 r = load_etc_kernel_install_conf();
361 if (r < 0)
362 return r;
363
364 r = settle_entry_token();
365 if (r < 0)
366 return r;
367
368 bool layout_type1 = use_boot_loader_spec_type1();
369 if (arg_make_entry_directory < 0) { /* Automatic mode */
370 if (layout_type1) {
371 if (arg_entry_token == ARG_ENTRY_TOKEN_MACHINE_ID) {
372 r = path_is_temporary_fs("/etc/machine-id");
373 if (r < 0)
374 return log_debug_errno(r, "Couldn't determine whether /etc/machine-id is on a temporary file system: %m");
375
376 arg_make_entry_directory = r == 0;
377 } else
378 arg_make_entry_directory = true;
379 } else
380 arg_make_entry_directory = false;
381 }
382
383 if (arg_make_entry_directory > 0 && !layout_type1)
384 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
385 "KERNEL_INSTALL_LAYOUT=%s is configured, but Boot Loader Specification Type #1 entry directory creation was requested.",
386 arg_install_layout);
387
388 return 0;
389 }
390
391 /* search for "#### LoaderInfo: systemd-boot 218 ####" string inside the binary */
392 static int get_file_version(int fd, char **v) {
393 struct stat st;
394 char *buf;
395 const char *s, *e;
396 char *x = NULL;
397 int r;
398
399 assert(fd >= 0);
400 assert(v);
401
402 if (fstat(fd, &st) < 0)
403 return log_error_errno(errno, "Failed to stat EFI binary: %m");
404
405 r = stat_verify_regular(&st);
406 if (r < 0)
407 return log_error_errno(r, "EFI binary is not a regular file: %m");
408
409 if (st.st_size < 27 || file_offset_beyond_memory_size(st.st_size)) {
410 *v = NULL;
411 return 0;
412 }
413
414 buf = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
415 if (buf == MAP_FAILED)
416 return log_error_errno(errno, "Failed to memory map EFI binary: %m");
417
418 s = mempmem_safe(buf, st.st_size - 8, "#### LoaderInfo: ", 17);
419 if (!s)
420 goto finish;
421
422 e = memmem_safe(s, st.st_size - (s - buf), " ####", 5);
423 if (!e || e - s < 3) {
424 r = log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Malformed version string.");
425 goto finish;
426 }
427
428 x = strndup(s, e - s);
429 if (!x) {
430 r = log_oom();
431 goto finish;
432 }
433 r = 1;
434
435 finish:
436 (void) munmap(buf, st.st_size);
437 *v = x;
438 return r;
439 }
440
441 static const char *get_efi_arch(void) {
442 /* Detect EFI firmware architecture of the running system. On mixed mode systems, it could be 32bit
443 * while the kernel is running in 64bit. */
444
445 #ifdef __x86_64__
446 _cleanup_free_ char *platform_size = NULL;
447 int r;
448
449 r = read_one_line_file("/sys/firmware/efi/fw_platform_size", &platform_size);
450 if (r == -ENOENT)
451 return EFI_MACHINE_TYPE_NAME;
452 if (r < 0) {
453 log_warning_errno(r, "Error reading EFI firmware word size, assuming '%i': %m", __WORDSIZE);
454 return EFI_MACHINE_TYPE_NAME;
455 }
456
457 if (streq(platform_size, "64"))
458 return EFI_MACHINE_TYPE_NAME;
459 if (streq(platform_size, "32"))
460 return "ia32";
461
462 log_warning(
463 "Unknown EFI firmware word size '%s', using default word size '%i' instead.",
464 platform_size,
465 __WORDSIZE);
466 #endif
467
468 return EFI_MACHINE_TYPE_NAME;
469 }
470
471 static int enumerate_binaries(
472 const char *esp_path,
473 const char *path,
474 const char *prefix,
475 char **previous,
476 bool *is_first) {
477
478 _cleanup_closedir_ DIR *d = NULL;
479 _cleanup_free_ char *p = NULL;
480 int c = 0, r;
481
482 assert(esp_path);
483 assert(path);
484 assert(previous);
485 assert(is_first);
486
487 r = chase_symlinks_and_opendir(path, esp_path, CHASE_PREFIX_ROOT, &p, &d);
488 if (r == -ENOENT)
489 return 0;
490 if (r < 0)
491 return log_error_errno(r, "Failed to read \"%s/%s\": %m", esp_path, path);
492
493 FOREACH_DIRENT(de, d, break) {
494 _cleanup_free_ char *v = NULL;
495 _cleanup_close_ int fd = -1;
496
497 if (!endswith_no_case(de->d_name, ".efi"))
498 continue;
499
500 if (prefix && !startswith_no_case(de->d_name, prefix))
501 continue;
502
503 fd = openat(dirfd(d), de->d_name, O_RDONLY|O_CLOEXEC);
504 if (fd < 0)
505 return log_error_errno(errno, "Failed to open \"%s/%s\" for reading: %m", p, de->d_name);
506
507 r = get_file_version(fd, &v);
508 if (r < 0)
509 return r;
510
511 if (*previous) { /* let's output the previous entry now, since now we know that there will be one more, and can draw the tree glyph properly */
512 printf(" %s %s%s\n",
513 *is_first ? "File:" : " ",
514 special_glyph(SPECIAL_GLYPH_TREE_BRANCH), *previous);
515 *is_first = false;
516 *previous = mfree(*previous);
517 }
518
519 /* Do not output this entry immediately, but store what should be printed in a state
520 * variable, because we only will know the tree glyph to print (branch or final edge) once we
521 * read one more entry */
522 if (r > 0)
523 r = asprintf(previous, "/%s/%s (%s%s%s)", path, de->d_name, ansi_highlight(), v, ansi_normal());
524 else
525 r = asprintf(previous, "/%s/%s", path, de->d_name);
526 if (r < 0)
527 return log_oom();
528
529 c++;
530 }
531
532 return c;
533 }
534
535 static int status_binaries(const char *esp_path, sd_id128_t partition) {
536 _cleanup_free_ char *last = NULL;
537 bool is_first = true;
538 int r, k;
539
540 printf("%sAvailable Boot Loaders on ESP:%s\n", ansi_underline(), ansi_normal());
541
542 if (!esp_path) {
543 printf(" ESP: Cannot find or access mount point of ESP.\n\n");
544 return -ENOENT;
545 }
546
547 printf(" ESP: %s", esp_path);
548 if (!sd_id128_is_null(partition))
549 printf(" (/dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR ")", SD_ID128_FORMAT_VAL(partition));
550 printf("\n");
551
552 r = enumerate_binaries(esp_path, "EFI/systemd", NULL, &last, &is_first);
553 if (r < 0) {
554 printf("\n");
555 return r;
556 }
557
558 k = enumerate_binaries(esp_path, "EFI/BOOT", "boot", &last, &is_first);
559 if (k < 0) {
560 printf("\n");
561 return k;
562 }
563
564 if (last) /* let's output the last entry now, since now we know that there will be no more, and can draw the tree glyph properly */
565 printf(" %s %s%s\n",
566 is_first ? "File:" : " ",
567 special_glyph(SPECIAL_GLYPH_TREE_RIGHT), last);
568
569 if (r == 0 && !arg_quiet)
570 log_info("systemd-boot not installed in ESP.");
571 if (k == 0 && !arg_quiet)
572 log_info("No default/fallback boot loader installed in ESP.");
573
574 printf("\n");
575 return 0;
576 }
577
578 static int print_efi_option(uint16_t id, int *n_printed, bool in_order) {
579 _cleanup_free_ char *title = NULL;
580 _cleanup_free_ char *path = NULL;
581 sd_id128_t partition;
582 bool active;
583 int r;
584
585 assert(n_printed);
586
587 r = efi_get_boot_option(id, &title, &partition, &path, &active);
588 if (r < 0)
589 return log_error_errno(r, "Failed to read boot option %u: %m", id);
590
591 /* print only configured entries with partition information */
592 if (!path || sd_id128_is_null(partition)) {
593 log_debug("Ignoring boot entry %u without partition information.", id);
594 return 0;
595 }
596
597 efi_tilt_backslashes(path);
598
599 if (*n_printed == 0) /* Print section title before first entry */
600 printf("%sBoot Loaders Listed in EFI Variables:%s\n", ansi_underline(), ansi_normal());
601
602 printf(" Title: %s%s%s\n", ansi_highlight(), strna(title), ansi_normal());
603 printf(" ID: 0x%04X\n", id);
604 printf(" Status: %sactive%s\n", active ? "" : "in", in_order ? ", boot-order" : "");
605 printf(" Partition: /dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR "\n",
606 SD_ID128_FORMAT_VAL(partition));
607 printf(" File: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), path);
608 printf("\n");
609
610 (*n_printed)++;
611 return 1;
612 }
613
614 static int status_variables(void) {
615 _cleanup_free_ uint16_t *options = NULL, *order = NULL;
616 int n_options, n_order, n_printed = 0;
617
618 n_options = efi_get_boot_options(&options);
619 if (n_options == -ENOENT)
620 return log_error_errno(n_options,
621 "Failed to access EFI variables, efivarfs"
622 " needs to be available at /sys/firmware/efi/efivars/.");
623 if (n_options < 0)
624 return log_error_errno(n_options, "Failed to read EFI boot entries: %m");
625
626 n_order = efi_get_boot_order(&order);
627 if (n_order == -ENOENT)
628 n_order = 0;
629 else if (n_order < 0)
630 return log_error_errno(n_order, "Failed to read EFI boot order: %m");
631
632 /* print entries in BootOrder first */
633 for (int i = 0; i < n_order; i++)
634 (void) print_efi_option(order[i], &n_printed, /* in_order= */ true);
635
636 /* print remaining entries */
637 for (int i = 0; i < n_options; i++) {
638 for (int j = 0; j < n_order; j++)
639 if (options[i] == order[j])
640 goto next_option;
641
642 (void) print_efi_option(options[i], &n_printed, /* in_order= */ false);
643
644 next_option:
645 continue;
646 }
647
648 if (n_printed == 0)
649 printf("No boot loaders listed in EFI Variables.\n\n");
650
651 return 0;
652 }
653
654 static int boot_config_load_and_select(
655 BootConfig *config,
656 const char *esp_path,
657 dev_t esp_devid,
658 const char *xbootldr_path,
659 dev_t xbootldr_devid) {
660
661 int r;
662
663 /* If XBOOTLDR and ESP actually refer to the same block device, suppress XBOOTLDR, since it would
664 * find the same entries twice. */
665 bool same = esp_path && xbootldr_path && devnum_set_and_equal(esp_devid, xbootldr_devid);
666
667 r = boot_config_load(config, esp_path, same ? NULL : xbootldr_path);
668 if (r < 0)
669 return r;
670
671 if (!arg_root) {
672 _cleanup_strv_free_ char **efi_entries = NULL;
673
674 r = efi_loader_get_entries(&efi_entries);
675 if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r))
676 log_debug_errno(r, "Boot loader reported no entries.");
677 else if (r < 0)
678 log_warning_errno(r, "Failed to determine entries reported by boot loader, ignoring: %m");
679 else
680 (void) boot_config_augment_from_loader(config, efi_entries, /* only_auto= */ false);
681 }
682
683 return boot_config_select_special_entries(config, /* skip_efivars= */ !!arg_root);
684 }
685
686 static int status_entries(
687 const BootConfig *config,
688 const char *esp_path,
689 sd_id128_t esp_partition_uuid,
690 const char *xbootldr_path,
691 sd_id128_t xbootldr_partition_uuid) {
692
693 sd_id128_t dollar_boot_partition_uuid;
694 const char *dollar_boot_path;
695 int r;
696
697 assert(config);
698 assert(esp_path || xbootldr_path);
699
700 if (xbootldr_path) {
701 dollar_boot_path = xbootldr_path;
702 dollar_boot_partition_uuid = xbootldr_partition_uuid;
703 } else {
704 dollar_boot_path = esp_path;
705 dollar_boot_partition_uuid = esp_partition_uuid;
706 }
707
708 printf("%sBoot Loader Entries:%s\n"
709 " $BOOT: %s", ansi_underline(), ansi_normal(), dollar_boot_path);
710 if (!sd_id128_is_null(dollar_boot_partition_uuid))
711 printf(" (/dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR ")",
712 SD_ID128_FORMAT_VAL(dollar_boot_partition_uuid));
713 printf("\n\n");
714
715 if (config->default_entry < 0)
716 printf("%zu entries, no entry could be determined as default.\n", config->n_entries);
717 else {
718 printf("%sDefault Boot Loader Entry:%s\n", ansi_underline(), ansi_normal());
719
720 r = show_boot_entry(
721 boot_config_default_entry(config),
722 /* show_as_default= */ false,
723 /* show_as_selected= */ false,
724 /* show_discovered= */ false);
725 if (r > 0)
726 /* < 0 is already logged by the function itself, let's just emit an extra warning if
727 the default entry is broken */
728 printf("\nWARNING: default boot entry is broken\n");
729 }
730
731 return 0;
732 }
733
734 static int compare_product(const char *a, const char *b) {
735 size_t x, y;
736
737 assert(a);
738 assert(b);
739
740 x = strcspn(a, " ");
741 y = strcspn(b, " ");
742 if (x != y)
743 return x < y ? -1 : x > y ? 1 : 0;
744
745 return strncmp(a, b, x);
746 }
747
748 static int compare_version(const char *a, const char *b) {
749 assert(a);
750 assert(b);
751
752 a += strcspn(a, " ");
753 a += strspn(a, " ");
754 b += strcspn(b, " ");
755 b += strspn(b, " ");
756
757 return strverscmp_improved(a, b);
758 }
759
760 static int version_check(int fd_from, const char *from, int fd_to, const char *to) {
761 _cleanup_free_ char *a = NULL, *b = NULL;
762 int r;
763
764 assert(fd_from >= 0);
765 assert(from);
766 assert(fd_to >= 0);
767 assert(to);
768
769 r = get_file_version(fd_from, &a);
770 if (r < 0)
771 return r;
772 if (r == 0)
773 return log_notice_errno(SYNTHETIC_ERRNO(EREMOTE),
774 "Source file \"%s\" does not carry version information!",
775 from);
776
777 r = get_file_version(fd_to, &b);
778 if (r < 0)
779 return r;
780 if (r == 0 || compare_product(a, b) != 0)
781 return log_notice_errno(SYNTHETIC_ERRNO(EREMOTE),
782 "Skipping \"%s\", since it's owned by another boot loader.",
783 to);
784
785 r = compare_version(a, b);
786 log_debug("Comparing versions: \"%s\" %s \"%s", a, comparison_operator(r), b);
787 if (r < 0)
788 return log_warning_errno(SYNTHETIC_ERRNO(ESTALE),
789 "Skipping \"%s\", since newer boot loader version in place already.", to);
790 if (r == 0)
791 return log_info_errno(SYNTHETIC_ERRNO(ESTALE),
792 "Skipping \"%s\", since same boot loader version in place already.", to);
793
794 return 0;
795 }
796
797 static int copy_file_with_version_check(const char *from, const char *to, bool force) {
798 _cleanup_close_ int fd_from = -1, fd_to = -1;
799 _cleanup_free_ char *t = NULL;
800 int r;
801
802 fd_from = open(from, O_RDONLY|O_CLOEXEC|O_NOCTTY);
803 if (fd_from < 0)
804 return log_error_errno(errno, "Failed to open \"%s\" for reading: %m", from);
805
806 if (!force) {
807 fd_to = open(to, O_RDONLY|O_CLOEXEC|O_NOCTTY);
808 if (fd_to < 0) {
809 if (errno != ENOENT)
810 return log_error_errno(errno, "Failed to open \"%s\" for reading: %m", to);
811 } else {
812 r = version_check(fd_from, from, fd_to, to);
813 if (r < 0)
814 return r;
815
816 if (lseek(fd_from, 0, SEEK_SET) == (off_t) -1)
817 return log_error_errno(errno, "Failed to seek in \"%s\": %m", from);
818
819 fd_to = safe_close(fd_to);
820 }
821 }
822
823 r = tempfn_random(to, NULL, &t);
824 if (r < 0)
825 return log_oom();
826
827 RUN_WITH_UMASK(0000) {
828 fd_to = open(t, O_WRONLY|O_CREAT|O_CLOEXEC|O_EXCL|O_NOFOLLOW, 0644);
829 if (fd_to < 0)
830 return log_error_errno(errno, "Failed to open \"%s\" for writing: %m", t);
831 }
832
833 r = copy_bytes(fd_from, fd_to, UINT64_MAX, COPY_REFLINK);
834 if (r < 0) {
835 (void) unlink(t);
836 return log_error_errno(r, "Failed to copy data from \"%s\" to \"%s\": %m", from, t);
837 }
838
839 (void) copy_times(fd_from, fd_to, 0);
840
841 r = fsync_full(fd_to);
842 if (r < 0) {
843 (void) unlink_noerrno(t);
844 return log_error_errno(r, "Failed to copy data from \"%s\" to \"%s\": %m", from, t);
845 }
846
847 if (renameat(AT_FDCWD, t, AT_FDCWD, to) < 0) {
848 (void) unlink_noerrno(t);
849 return log_error_errno(errno, "Failed to rename \"%s\" to \"%s\": %m", t, to);
850 }
851
852 log_info("Copied \"%s\" to \"%s\".", from, to);
853
854 return 0;
855 }
856
857 static int mkdir_one(const char *prefix, const char *suffix) {
858 _cleanup_free_ char *p = NULL;
859
860 p = path_join(prefix, suffix);
861 if (mkdir(p, 0700) < 0) {
862 if (errno != EEXIST)
863 return log_error_errno(errno, "Failed to create \"%s\": %m", p);
864 } else
865 log_info("Created \"%s\".", p);
866
867 return 0;
868 }
869
870 static const char *const esp_subdirs[] = {
871 /* The directories to place in the ESP */
872 "EFI",
873 "EFI/systemd",
874 "EFI/BOOT",
875 "loader",
876 NULL
877 };
878
879 static const char *const dollar_boot_subdirs[] = {
880 /* The directories to place in the XBOOTLDR partition or the ESP, depending what exists */
881 "loader",
882 "loader/entries", /* Type #1 entries */
883 "EFI",
884 "EFI/Linux", /* Type #2 entries */
885 NULL
886 };
887
888 static int create_subdirs(const char *root, const char * const *subdirs) {
889 int r;
890
891 STRV_FOREACH(i, subdirs) {
892 r = mkdir_one(root, *i);
893 if (r < 0)
894 return r;
895 }
896
897 return 0;
898 }
899
900 static int copy_one_file(const char *esp_path, const char *name, bool force) {
901 char *root = IN_SET(arg_install_source, ARG_INSTALL_SOURCE_AUTO, ARG_INSTALL_SOURCE_IMAGE) ? arg_root : NULL;
902 _cleanup_free_ char *source_path = NULL, *dest_path = NULL, *p = NULL, *q = NULL;
903 const char *e;
904 char *dest_name, *s;
905 int r, ret;
906
907 dest_name = strdupa_safe(name);
908 s = endswith_no_case(dest_name, ".signed");
909 if (s)
910 *s = 0;
911
912 p = path_join(BOOTLIBDIR, name);
913 if (!p)
914 return log_oom();
915
916 r = chase_symlinks(p, root, CHASE_PREFIX_ROOT, &source_path, NULL);
917 /* If we had a root directory to try, we didn't find it and we are in auto mode, retry on the host */
918 if (r == -ENOENT && root && arg_install_source == ARG_INSTALL_SOURCE_AUTO)
919 r = chase_symlinks(p, NULL, CHASE_PREFIX_ROOT, &source_path, NULL);
920 if (r < 0)
921 return log_error_errno(r,
922 "Failed to resolve path %s%s%s: %m",
923 p,
924 root ? " under directory " : "",
925 strempty(root));
926
927 q = path_join("/EFI/systemd/", dest_name);
928 if (!q)
929 return log_oom();
930
931 r = chase_symlinks(q, esp_path, CHASE_PREFIX_ROOT | CHASE_NONEXISTENT, &dest_path, NULL);
932 if (r < 0)
933 return log_error_errno(r, "Failed to resolve path %s under directory %s: %m", q, esp_path);
934
935 /* Note that if this fails we do the second copy anyway, but return this error code,
936 * so we stash it away in a separate variable. */
937 ret = copy_file_with_version_check(source_path, dest_path, force);
938
939 e = startswith(dest_name, "systemd-boot");
940 if (e) {
941 _cleanup_free_ char *default_dest_path = NULL;
942 char *v;
943
944 /* Create the EFI default boot loader name (specified for removable devices) */
945 v = strjoina("/EFI/BOOT/BOOT", e);
946 ascii_strupper(strrchr(v, '/') + 1);
947
948 r = chase_symlinks(v, esp_path, CHASE_PREFIX_ROOT | CHASE_NONEXISTENT, &default_dest_path, NULL);
949 if (r < 0)
950 return log_error_errno(r, "Failed to resolve path %s under directory %s: %m", v, esp_path);
951
952 r = copy_file_with_version_check(source_path, default_dest_path, force);
953 if (r < 0 && ret == 0)
954 ret = r;
955 }
956
957 return ret;
958 }
959
960 static int install_binaries(const char *esp_path, const char *arch, bool force) {
961 char *root = IN_SET(arg_install_source, ARG_INSTALL_SOURCE_AUTO, ARG_INSTALL_SOURCE_IMAGE) ? arg_root : NULL;
962 _cleanup_closedir_ DIR *d = NULL;
963 _cleanup_free_ char *path = NULL;
964 int r;
965
966 r = chase_symlinks_and_opendir(BOOTLIBDIR, root, CHASE_PREFIX_ROOT, &path, &d);
967 /* If we had a root directory to try, we didn't find it and we are in auto mode, retry on the host */
968 if (r == -ENOENT && root && arg_install_source == ARG_INSTALL_SOURCE_AUTO)
969 r = chase_symlinks_and_opendir(BOOTLIBDIR, NULL, CHASE_PREFIX_ROOT, &path, &d);
970 if (r < 0)
971 return log_error_errno(r, "Failed to open boot loader directory %s%s: %m", strempty(root), BOOTLIBDIR);
972
973 const char *suffix = strjoina(arch, ".efi");
974 const char *suffix_signed = strjoina(arch, ".efi.signed");
975
976 FOREACH_DIRENT(de, d, return log_error_errno(errno, "Failed to read \"%s\": %m", path)) {
977 int k;
978
979 if (!endswith_no_case(de->d_name, suffix) && !endswith_no_case(de->d_name, suffix_signed))
980 continue;
981
982 /* skip the .efi file, if there's a .signed version of it */
983 if (endswith_no_case(de->d_name, ".efi")) {
984 _cleanup_free_ const char *s = strjoin(de->d_name, ".signed");
985 if (!s)
986 return log_oom();
987 if (faccessat(dirfd(d), s, F_OK, 0) >= 0)
988 continue;
989 }
990
991 k = copy_one_file(esp_path, de->d_name, force);
992 /* Don't propagate an error code if no update necessary, installed version already equal or
993 * newer version, or other boot loader in place. */
994 if (arg_graceful && IN_SET(k, -ESTALE, -EREMOTE))
995 continue;
996 if (k < 0 && r == 0)
997 r = k;
998 }
999
1000 return r;
1001 }
1002
1003 static bool same_entry(uint16_t id, sd_id128_t uuid, const char *path) {
1004 _cleanup_free_ char *opath = NULL;
1005 sd_id128_t ouuid;
1006 int r;
1007
1008 r = efi_get_boot_option(id, NULL, &ouuid, &opath, NULL);
1009 if (r < 0)
1010 return false;
1011 if (!sd_id128_equal(uuid, ouuid))
1012 return false;
1013
1014 /* Some motherboards convert the path to uppercase under certain circumstances
1015 * (e.g. after booting into the Boot Menu in the ASUS ROG STRIX B350-F GAMING),
1016 * so use case-insensitive checking */
1017 if (!strcaseeq_ptr(path, opath))
1018 return false;
1019
1020 return true;
1021 }
1022
1023 static int find_slot(sd_id128_t uuid, const char *path, uint16_t *id) {
1024 _cleanup_free_ uint16_t *options = NULL;
1025
1026 int n = efi_get_boot_options(&options);
1027 if (n < 0)
1028 return n;
1029
1030 /* find already existing systemd-boot entry */
1031 for (int i = 0; i < n; i++)
1032 if (same_entry(options[i], uuid, path)) {
1033 *id = options[i];
1034 return 1;
1035 }
1036
1037 /* find free slot in the sorted BootXXXX variable list */
1038 for (int i = 0; i < n; i++)
1039 if (i != options[i]) {
1040 *id = i;
1041 return 0;
1042 }
1043
1044 /* use the next one */
1045 if (n == 0xffff)
1046 return -ENOSPC;
1047 *id = n;
1048 return 0;
1049 }
1050
1051 static int insert_into_order(uint16_t slot, bool first) {
1052 _cleanup_free_ uint16_t *order = NULL;
1053 uint16_t *t;
1054 int n;
1055
1056 n = efi_get_boot_order(&order);
1057 if (n <= 0)
1058 /* no entry, add us */
1059 return efi_set_boot_order(&slot, 1);
1060
1061 /* are we the first and only one? */
1062 if (n == 1 && order[0] == slot)
1063 return 0;
1064
1065 /* are we already in the boot order? */
1066 for (int i = 0; i < n; i++) {
1067 if (order[i] != slot)
1068 continue;
1069
1070 /* we do not require to be the first one, all is fine */
1071 if (!first)
1072 return 0;
1073
1074 /* move us to the first slot */
1075 memmove(order + 1, order, i * sizeof(uint16_t));
1076 order[0] = slot;
1077 return efi_set_boot_order(order, n);
1078 }
1079
1080 /* extend array */
1081 t = reallocarray(order, n + 1, sizeof(uint16_t));
1082 if (!t)
1083 return -ENOMEM;
1084 order = t;
1085
1086 /* add us to the top or end of the list */
1087 if (first) {
1088 memmove(order + 1, order, n * sizeof(uint16_t));
1089 order[0] = slot;
1090 } else
1091 order[n] = slot;
1092
1093 return efi_set_boot_order(order, n + 1);
1094 }
1095
1096 static int remove_from_order(uint16_t slot) {
1097 _cleanup_free_ uint16_t *order = NULL;
1098 int n;
1099
1100 n = efi_get_boot_order(&order);
1101 if (n <= 0)
1102 return n;
1103
1104 for (int i = 0; i < n; i++) {
1105 if (order[i] != slot)
1106 continue;
1107
1108 if (i + 1 < n)
1109 memmove(order + i, order + i+1, (n - i) * sizeof(uint16_t));
1110 return efi_set_boot_order(order, n - 1);
1111 }
1112
1113 return 0;
1114 }
1115
1116 static int install_variables(
1117 const char *esp_path,
1118 uint32_t part,
1119 uint64_t pstart,
1120 uint64_t psize,
1121 sd_id128_t uuid,
1122 const char *path,
1123 bool first) {
1124
1125 uint16_t slot;
1126 int r;
1127
1128 if (arg_root) {
1129 log_info("Acting on %s, skipping EFI variable setup.",
1130 arg_image ? "image" : "root directory");
1131 return 0;
1132 }
1133
1134 if (!is_efi_boot()) {
1135 log_warning("Not booted with EFI, skipping EFI variable setup.");
1136 return 0;
1137 }
1138
1139 r = chase_symlinks_and_access(path, esp_path, CHASE_PREFIX_ROOT, F_OK, NULL, NULL);
1140 if (r == -ENOENT)
1141 return 0;
1142 if (r < 0)
1143 return log_error_errno(r, "Cannot access \"%s/%s\": %m", esp_path, path);
1144
1145 r = find_slot(uuid, path, &slot);
1146 if (r < 0)
1147 return log_error_errno(r,
1148 r == -ENOENT ?
1149 "Failed to access EFI variables. Is the \"efivarfs\" filesystem mounted?" :
1150 "Failed to determine current boot order: %m");
1151
1152 if (first || r == 0) {
1153 r = efi_add_boot_option(slot, pick_efi_boot_option_description(),
1154 part, pstart, psize,
1155 uuid, path);
1156 if (r < 0)
1157 return log_error_errno(r, "Failed to create EFI Boot variable entry: %m");
1158
1159 log_info("Created EFI boot entry \"%s\".", pick_efi_boot_option_description());
1160 }
1161
1162 return insert_into_order(slot, first);
1163 }
1164
1165 static int remove_boot_efi(const char *esp_path) {
1166 _cleanup_closedir_ DIR *d = NULL;
1167 _cleanup_free_ char *p = NULL;
1168 int r, c = 0;
1169
1170 r = chase_symlinks_and_opendir("/EFI/BOOT", esp_path, CHASE_PREFIX_ROOT, &p, &d);
1171 if (r == -ENOENT)
1172 return 0;
1173 if (r < 0)
1174 return log_error_errno(r, "Failed to open directory \"%s/EFI/BOOT\": %m", esp_path);
1175
1176 FOREACH_DIRENT(de, d, break) {
1177 _cleanup_close_ int fd = -1;
1178 _cleanup_free_ char *v = NULL;
1179
1180 if (!endswith_no_case(de->d_name, ".efi"))
1181 continue;
1182
1183 if (!startswith_no_case(de->d_name, "boot"))
1184 continue;
1185
1186 fd = openat(dirfd(d), de->d_name, O_RDONLY|O_CLOEXEC);
1187 if (fd < 0)
1188 return log_error_errno(errno, "Failed to open \"%s/%s\" for reading: %m", p, de->d_name);
1189
1190 r = get_file_version(fd, &v);
1191 if (r < 0)
1192 return r;
1193 if (r > 0 && startswith(v, "systemd-boot ")) {
1194 r = unlinkat(dirfd(d), de->d_name, 0);
1195 if (r < 0)
1196 return log_error_errno(errno, "Failed to remove \"%s/%s\": %m", p, de->d_name);
1197
1198 log_info("Removed \"%s/%s\".", p, de->d_name);
1199 }
1200
1201 c++;
1202 }
1203
1204 return c;
1205 }
1206
1207 static int rmdir_one(const char *prefix, const char *suffix) {
1208 const char *p;
1209
1210 p = prefix_roota(prefix, suffix);
1211 if (rmdir(p) < 0) {
1212 bool ignore = IN_SET(errno, ENOENT, ENOTEMPTY);
1213
1214 log_full_errno(ignore ? LOG_DEBUG : LOG_ERR, errno,
1215 "Failed to remove directory \"%s\": %m", p);
1216 if (!ignore)
1217 return -errno;
1218 } else
1219 log_info("Removed \"%s\".", p);
1220
1221 return 0;
1222 }
1223
1224 static int remove_subdirs(const char *root, const char *const *subdirs) {
1225 int r, q;
1226
1227 /* We use recursion here to destroy the directories in reverse order. Which should be safe given how
1228 * short the array is. */
1229
1230 if (!subdirs[0]) /* A the end of the list */
1231 return 0;
1232
1233 r = remove_subdirs(root, subdirs + 1);
1234 q = rmdir_one(root, subdirs[0]);
1235
1236 return r < 0 ? r : q;
1237 }
1238
1239 static int remove_entry_directory(const char *root) {
1240 assert(root);
1241 assert(arg_make_entry_directory >= 0);
1242
1243 if (!arg_make_entry_directory || !arg_entry_token)
1244 return 0;
1245
1246 return rmdir_one(root, arg_entry_token);
1247 }
1248
1249 static int remove_binaries(const char *esp_path) {
1250 const char *p;
1251 int r, q;
1252
1253 p = prefix_roota(esp_path, "/EFI/systemd");
1254 r = rm_rf(p, REMOVE_ROOT|REMOVE_PHYSICAL);
1255
1256 q = remove_boot_efi(esp_path);
1257 if (q < 0 && r == 0)
1258 r = q;
1259
1260 return r;
1261 }
1262
1263 static int remove_file(const char *root, const char *file) {
1264 const char *p;
1265
1266 assert(root);
1267 assert(file);
1268
1269 p = prefix_roota(root, file);
1270 if (unlink(p) < 0) {
1271 log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_ERR, errno,
1272 "Failed to unlink file \"%s\": %m", p);
1273
1274 return errno == ENOENT ? 0 : -errno;
1275 }
1276
1277 log_info("Removed \"%s\".", p);
1278 return 1;
1279 }
1280
1281 static int remove_variables(sd_id128_t uuid, const char *path, bool in_order) {
1282 uint16_t slot;
1283 int r;
1284
1285 if (arg_root || !is_efi_boot())
1286 return 0;
1287
1288 r = find_slot(uuid, path, &slot);
1289 if (r != 1)
1290 return 0;
1291
1292 r = efi_remove_boot_option(slot);
1293 if (r < 0)
1294 return r;
1295
1296 if (in_order)
1297 return remove_from_order(slot);
1298
1299 return 0;
1300 }
1301
1302 static int remove_loader_variables(void) {
1303 int r = 0;
1304
1305 /* Remove all persistent loader variables we define */
1306
1307 FOREACH_STRING(var,
1308 EFI_LOADER_VARIABLE(LoaderConfigTimeout),
1309 EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot),
1310 EFI_LOADER_VARIABLE(LoaderEntryDefault),
1311 EFI_LOADER_VARIABLE(LoaderEntryOneShot),
1312 EFI_LOADER_VARIABLE(LoaderSystemToken)){
1313
1314 int q;
1315
1316 q = efi_set_variable(var, NULL, 0);
1317 if (q == -ENOENT)
1318 continue;
1319 if (q < 0) {
1320 log_warning_errno(q, "Failed to remove EFI variable %s: %m", var);
1321 if (r >= 0)
1322 r = q;
1323 } else
1324 log_info("Removed EFI variable %s.", var);
1325 }
1326
1327 return r;
1328 }
1329
1330 static int install_loader_config(const char *esp_path) {
1331 _cleanup_(unlink_and_freep) char *t = NULL;
1332 _cleanup_fclose_ FILE *f = NULL;
1333 const char *p;
1334 int r;
1335
1336 assert(arg_make_entry_directory >= 0);
1337
1338 p = prefix_roota(esp_path, "/loader/loader.conf");
1339 if (access(p, F_OK) >= 0) /* Silently skip creation if the file already exists (early check) */
1340 return 0;
1341
1342 r = fopen_tmpfile_linkable(p, O_WRONLY|O_CLOEXEC, &t, &f);
1343 if (r < 0)
1344 return log_error_errno(r, "Failed to open \"%s\" for writing: %m", p);
1345
1346 fprintf(f, "#timeout 3\n"
1347 "#console-mode keep\n");
1348
1349 if (arg_make_entry_directory) {
1350 assert(arg_entry_token);
1351 fprintf(f, "default %s-*\n", arg_entry_token);
1352 }
1353
1354 r = flink_tmpfile(f, t, p);
1355 if (r == -EEXIST)
1356 return 0; /* Silently skip creation if the file exists now (recheck) */
1357 if (r < 0)
1358 return log_error_errno(r, "Failed to move \"%s\" into place: %m", p);
1359
1360 t = mfree(t);
1361 return 1;
1362 }
1363
1364 static int install_loader_specification(const char *root) {
1365 _cleanup_(unlink_and_freep) char *t = NULL;
1366 _cleanup_fclose_ FILE *f = NULL;
1367 _cleanup_free_ char *p = NULL;
1368 int r;
1369
1370 p = path_join(root, "/loader/entries.srel");
1371 if (!p)
1372 return log_oom();
1373
1374 if (access(p, F_OK) >= 0) /* Silently skip creation if the file already exists (early check) */
1375 return 0;
1376
1377 r = fopen_tmpfile_linkable(p, O_WRONLY|O_CLOEXEC, &t, &f);
1378 if (r < 0)
1379 return log_error_errno(r, "Failed to open \"%s\" for writing: %m", p);
1380
1381 fprintf(f, "type1\n");
1382
1383 r = flink_tmpfile(f, t, p);
1384 if (r == -EEXIST)
1385 return 0; /* Silently skip creation if the file exists now (recheck) */
1386 if (r < 0)
1387 return log_error_errno(r, "Failed to move \"%s\" into place: %m", p);
1388
1389 t = mfree(t);
1390 return 1;
1391 }
1392
1393 static int install_entry_directory(const char *root) {
1394 assert(root);
1395 assert(arg_make_entry_directory >= 0);
1396
1397 if (!arg_make_entry_directory)
1398 return 0;
1399
1400 assert(arg_entry_token);
1401 return mkdir_one(root, arg_entry_token);
1402 }
1403
1404 static int install_entry_token(void) {
1405 int r;
1406
1407 assert(arg_make_entry_directory >= 0);
1408 assert(arg_entry_token);
1409
1410 /* Let's save the used entry token in /etc/kernel/entry-token if we used it to create the entry
1411 * directory, or if anything else but the machine ID */
1412
1413 if (!arg_make_entry_directory && arg_entry_token_type == ARG_ENTRY_TOKEN_MACHINE_ID)
1414 return 0;
1415
1416 r = write_string_file("/etc/kernel/entry-token", arg_entry_token, WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_ATOMIC|WRITE_STRING_FILE_MKDIR_0755);
1417 if (r < 0)
1418 return log_error_errno(r, "Failed to write entry token '%s' to /etc/kernel/entry-token", arg_entry_token);
1419
1420 return 0;
1421 }
1422
1423 static int help(int argc, char *argv[], void *userdata) {
1424 _cleanup_free_ char *link = NULL;
1425 int r;
1426
1427 r = terminal_urlify_man("bootctl", "1", &link);
1428 if (r < 0)
1429 return log_oom();
1430
1431 printf("%1$s [OPTIONS...] COMMAND ...\n"
1432 "\n%5$sControl EFI firmware boot settings and manage boot loader.%6$s\n"
1433 "\n%3$sGeneric EFI Firmware/Boot Loader Commands:%4$s\n"
1434 " status Show status of installed boot loader and EFI variables\n"
1435 " reboot-to-firmware [BOOL]\n"
1436 " Query or set reboot-to-firmware EFI flag\n"
1437 " systemd-efi-options [STRING]\n"
1438 " Query or set system options string in EFI variable\n"
1439 "\n%3$sBoot Loader Specification Commands:%4$s\n"
1440 " list List boot loader entries\n"
1441 " set-default ID Set default boot loader entry\n"
1442 " set-oneshot ID Set default boot loader entry, for next boot only\n"
1443 " set-timeout SECONDS Set the menu timeout\n"
1444 " set-timeout-oneshot SECONDS\n"
1445 " Set the menu timeout for the next boot only\n"
1446 "\n%3$ssystemd-boot Commands:%4$s\n"
1447 " install Install systemd-boot to the ESP and EFI variables\n"
1448 " update Update systemd-boot in the ESP and EFI variables\n"
1449 " remove Remove systemd-boot from the ESP and EFI variables\n"
1450 " is-installed Test whether systemd-boot is installed in the ESP\n"
1451 " random-seed Initialize random seed in ESP and EFI variables\n"
1452 "\n%3$sOptions:%4$s\n"
1453 " -h --help Show this help\n"
1454 " --version Print version\n"
1455 " --esp-path=PATH Path to the EFI System Partition (ESP)\n"
1456 " --boot-path=PATH Path to the $BOOT partition\n"
1457 " --root=PATH Operate on an alternate filesystem root\n"
1458 " --image=PATH Operate on disk image as filesystem root\n"
1459 " --install-source=auto|image|host\n"
1460 " Where to pick files when using --root=/--image=\n"
1461 " -p --print-esp-path Print path to the EFI System Partition\n"
1462 " -x --print-boot-path Print path to the $BOOT partition\n"
1463 " --no-variables Don't touch EFI variables\n"
1464 " --no-pager Do not pipe output into a pager\n"
1465 " --graceful Don't fail when the ESP cannot be found or EFI\n"
1466 " variables cannot be written\n"
1467 " -q --quiet Suppress output\n"
1468 " --make-entry-directory=yes|no|auto\n"
1469 " Create $BOOT/ENTRY-TOKEN/ directory\n"
1470 " --entry-token=machine-id|os-id|os-image-id|auto|literal:…\n"
1471 " Entry token to use for this installation\n"
1472 " --json=pretty|short|off\n"
1473 " Generate JSON output\n"
1474 " --all-architectures\n"
1475 " Install all supported EFI architectures\n"
1476 " --efi-boot-option-description=DESCRIPTION\n"
1477 " Description of the entry in the boot option list\n"
1478 "\nSee the %2$s for details.\n",
1479 program_invocation_short_name,
1480 link,
1481 ansi_underline(),
1482 ansi_normal(),
1483 ansi_highlight(),
1484 ansi_normal());
1485
1486 return 0;
1487 }
1488
1489 static int parse_argv(int argc, char *argv[]) {
1490 enum {
1491 ARG_ESP_PATH = 0x100,
1492 ARG_BOOT_PATH,
1493 ARG_ROOT,
1494 ARG_IMAGE,
1495 ARG_INSTALL_SOURCE,
1496 ARG_VERSION,
1497 ARG_NO_VARIABLES,
1498 ARG_NO_PAGER,
1499 ARG_GRACEFUL,
1500 ARG_MAKE_ENTRY_DIRECTORY,
1501 ARG_ENTRY_TOKEN,
1502 ARG_JSON,
1503 ARG_ARCH_ALL,
1504 ARG_EFI_BOOT_OPTION_DESCRIPTION,
1505 };
1506
1507 static const struct option options[] = {
1508 { "help", no_argument, NULL, 'h' },
1509 { "version", no_argument, NULL, ARG_VERSION },
1510 { "esp-path", required_argument, NULL, ARG_ESP_PATH },
1511 { "path", required_argument, NULL, ARG_ESP_PATH }, /* Compatibility alias */
1512 { "boot-path", required_argument, NULL, ARG_BOOT_PATH },
1513 { "root", required_argument, NULL, ARG_ROOT },
1514 { "image", required_argument, NULL, ARG_IMAGE },
1515 { "install-source", required_argument, NULL, ARG_INSTALL_SOURCE },
1516 { "print-esp-path", no_argument, NULL, 'p' },
1517 { "print-path", no_argument, NULL, 'p' }, /* Compatibility alias */
1518 { "print-boot-path", no_argument, NULL, 'x' },
1519 { "no-variables", no_argument, NULL, ARG_NO_VARIABLES },
1520 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
1521 { "graceful", no_argument, NULL, ARG_GRACEFUL },
1522 { "quiet", no_argument, NULL, 'q' },
1523 { "make-entry-directory", required_argument, NULL, ARG_MAKE_ENTRY_DIRECTORY },
1524 { "make-machine-id-directory", required_argument, NULL, ARG_MAKE_ENTRY_DIRECTORY }, /* Compatibility alias */
1525 { "entry-token", required_argument, NULL, ARG_ENTRY_TOKEN },
1526 { "json", required_argument, NULL, ARG_JSON },
1527 { "all-architectures", no_argument, NULL, ARG_ARCH_ALL },
1528 { "efi-boot-option-description", required_argument, NULL, ARG_EFI_BOOT_OPTION_DESCRIPTION },
1529 {}
1530 };
1531
1532 int c, r;
1533 bool b;
1534
1535 assert(argc >= 0);
1536 assert(argv);
1537
1538 while ((c = getopt_long(argc, argv, "hpx", options, NULL)) >= 0)
1539 switch (c) {
1540
1541 case 'h':
1542 help(0, NULL, NULL);
1543 return 0;
1544
1545 case ARG_VERSION:
1546 return version();
1547
1548 case ARG_ESP_PATH:
1549 r = free_and_strdup(&arg_esp_path, optarg);
1550 if (r < 0)
1551 return log_oom();
1552 break;
1553
1554 case ARG_BOOT_PATH:
1555 r = free_and_strdup(&arg_xbootldr_path, optarg);
1556 if (r < 0)
1557 return log_oom();
1558 break;
1559
1560 case ARG_ROOT:
1561 r = parse_path_argument(optarg, /* suppress_root= */ true, &arg_root);
1562 if (r < 0)
1563 return r;
1564 break;
1565
1566 case ARG_IMAGE:
1567 r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image);
1568 if (r < 0)
1569 return r;
1570 break;
1571
1572 case ARG_INSTALL_SOURCE:
1573 if (streq(optarg, "auto"))
1574 arg_install_source = ARG_INSTALL_SOURCE_AUTO;
1575 else if (streq(optarg, "image"))
1576 arg_install_source = ARG_INSTALL_SOURCE_IMAGE;
1577 else if (streq(optarg, "host"))
1578 arg_install_source = ARG_INSTALL_SOURCE_HOST;
1579 else
1580 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1581 "Unexpected parameter for --install-source=: %s", optarg);
1582
1583 break;
1584
1585 case 'p':
1586 if (arg_print_dollar_boot_path)
1587 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1588 "--print-boot-path/-x cannot be combined with --print-esp-path/-p");
1589 arg_print_esp_path = true;
1590 break;
1591
1592 case 'x':
1593 if (arg_print_esp_path)
1594 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1595 "--print-boot-path/-x cannot be combined with --print-esp-path/-p");
1596 arg_print_dollar_boot_path = true;
1597 break;
1598
1599 case ARG_NO_VARIABLES:
1600 arg_touch_variables = false;
1601 break;
1602
1603 case ARG_NO_PAGER:
1604 arg_pager_flags |= PAGER_DISABLE;
1605 break;
1606
1607 case ARG_GRACEFUL:
1608 arg_graceful = true;
1609 break;
1610
1611 case 'q':
1612 arg_quiet = true;
1613 break;
1614
1615 case ARG_ENTRY_TOKEN: {
1616 const char *e;
1617
1618 if (streq(optarg, "machine-id")) {
1619 arg_entry_token_type = ARG_ENTRY_TOKEN_MACHINE_ID;
1620 arg_entry_token = mfree(arg_entry_token);
1621 } else if (streq(optarg, "os-image-id")) {
1622 arg_entry_token_type = ARG_ENTRY_TOKEN_OS_IMAGE_ID;
1623 arg_entry_token = mfree(arg_entry_token);
1624 } else if (streq(optarg, "os-id")) {
1625 arg_entry_token_type = ARG_ENTRY_TOKEN_OS_ID;
1626 arg_entry_token = mfree(arg_entry_token);
1627 } else if ((e = startswith(optarg, "literal:"))) {
1628 arg_entry_token_type = ARG_ENTRY_TOKEN_LITERAL;
1629
1630 r = free_and_strdup_warn(&arg_entry_token, e);
1631 if (r < 0)
1632 return r;
1633 } else
1634 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1635 "Unexpected parameter for --entry-token=: %s", optarg);
1636
1637 break;
1638 }
1639
1640 case ARG_MAKE_ENTRY_DIRECTORY:
1641 if (streq(optarg, "auto")) /* retained for backwards compatibility */
1642 arg_make_entry_directory = -1; /* yes if machine-id is permanent */
1643 else {
1644 r = parse_boolean_argument("--make-entry-directory=", optarg, &b);
1645 if (r < 0)
1646 return r;
1647
1648 arg_make_entry_directory = b;
1649 }
1650 break;
1651
1652 case ARG_JSON:
1653 r = parse_json_argument(optarg, &arg_json_format_flags);
1654 if (r <= 0)
1655 return r;
1656 break;
1657
1658 case ARG_ARCH_ALL:
1659 arg_arch_all = true;
1660 break;
1661
1662 case ARG_EFI_BOOT_OPTION_DESCRIPTION:
1663 if (isempty(optarg) || !(string_is_safe(optarg) && utf8_is_valid(optarg))) {
1664 _cleanup_free_ char *escaped = NULL;
1665
1666 escaped = cescape(optarg);
1667 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1668 "Invalid --efi-boot-option-description=: %s", strna(escaped));
1669 }
1670 if (strlen(optarg) > EFI_BOOT_OPTION_DESCRIPTION_MAX)
1671 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1672 "--efi-boot-option-description= too long: %zu > %zu", strlen(optarg), EFI_BOOT_OPTION_DESCRIPTION_MAX);
1673 r = free_and_strdup_warn(&arg_efi_boot_option_description, optarg);
1674 if (r < 0)
1675 return r;
1676 break;
1677
1678 case '?':
1679 return -EINVAL;
1680
1681 default:
1682 assert_not_reached();
1683 }
1684
1685 if ((arg_root || arg_image) && argv[optind] && !STR_IN_SET(argv[optind], "status", "list",
1686 "install", "update", "remove", "is-installed", "random-seed"))
1687 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1688 "Options --root= and --image= are not supported with verb %s.",
1689 argv[optind]);
1690
1691 if (arg_root && arg_image)
1692 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported.");
1693
1694 if (arg_install_source != ARG_INSTALL_SOURCE_AUTO && !arg_root && !arg_image)
1695 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "--install-from-host is only supported with --root= or --image=.");
1696
1697 return 1;
1698 }
1699
1700 static void read_efi_var(const char *variable, char **ret) {
1701 int r;
1702
1703 r = efi_get_variable_string(variable, ret);
1704 if (r < 0 && r != -ENOENT)
1705 log_warning_errno(r, "Failed to read EFI variable %s: %m", variable);
1706 }
1707
1708 static void print_yes_no_line(bool first, bool good, const char *name) {
1709 printf("%s%s %s\n",
1710 first ? " Features: " : " ",
1711 COLOR_MARK_BOOL(good),
1712 name);
1713 }
1714
1715 static int are_we_installed(const char *esp_path) {
1716 int r;
1717
1718 /* Tests whether systemd-boot is installed. It's not obvious what to use as check here: we could
1719 * check EFI variables, we could check what binary /EFI/BOOT/BOOT*.EFI points to, or whether the
1720 * loader entries directory exists. Here we opted to check whether /EFI/systemd/ is non-empty, which
1721 * should be a suitable and very minimal check for a number of reasons:
1722 *
1723 * → The check is architecture independent (i.e. we check if any systemd-boot loader is installed,
1724 * not a specific one.)
1725 *
1726 * → It doesn't assume we are the only boot loader (i.e doesn't check if we own the main
1727 * /EFI/BOOT/BOOT*.EFI fallback binary.
1728 *
1729 * → It specifically checks for systemd-boot, not for other boot loaders (which a check for
1730 * /boot/loader/entries would do). */
1731
1732 _cleanup_free_ char *p = path_join(esp_path, "/EFI/systemd/");
1733 if (!p)
1734 return log_oom();
1735
1736 log_debug("Checking whether %s contains any files%s", p, special_glyph(SPECIAL_GLYPH_ELLIPSIS));
1737 r = dir_is_empty(p, /* ignore_hidden_or_backup= */ false);
1738 if (r < 0 && r != -ENOENT)
1739 return log_error_errno(r, "Failed to check whether %s contains any files: %m", p);
1740
1741 return r == 0;
1742 }
1743
1744 static int verb_status(int argc, char *argv[], void *userdata) {
1745 sd_id128_t esp_uuid = SD_ID128_NULL, xbootldr_uuid = SD_ID128_NULL;
1746 dev_t esp_devid = 0, xbootldr_devid = 0;
1747 int r, k;
1748
1749 r = acquire_esp(/* unprivileged_mode= */ geteuid() != 0, /* graceful= */ false, NULL, NULL, NULL, &esp_uuid, &esp_devid);
1750 if (arg_print_esp_path) {
1751 if (r == -EACCES) /* If we couldn't acquire the ESP path, log about access errors (which is the only
1752 * error the find_esp_and_warn() won't log on its own) */
1753 return log_error_errno(r, "Failed to determine ESP location: %m");
1754 if (r < 0)
1755 return r;
1756
1757 puts(arg_esp_path);
1758 }
1759
1760 r = acquire_xbootldr(/* unprivileged_mode= */ geteuid() != 0, &xbootldr_uuid, &xbootldr_devid);
1761 if (arg_print_dollar_boot_path) {
1762 if (r == -EACCES)
1763 return log_error_errno(r, "Failed to determine XBOOTLDR partition: %m");
1764 if (r < 0)
1765 return r;
1766
1767 const char *path = arg_dollar_boot_path();
1768 if (!path)
1769 return log_error_errno(SYNTHETIC_ERRNO(EACCES), "Failed to determine XBOOTLDR location: %m");
1770
1771 puts(path);
1772 }
1773
1774 if (arg_print_esp_path || arg_print_dollar_boot_path)
1775 return 0;
1776
1777 r = 0; /* If we couldn't determine the path, then don't consider that a problem from here on, just
1778 * show what we can show */
1779
1780 pager_open(arg_pager_flags);
1781
1782 if (!arg_root && is_efi_boot()) {
1783 static const struct {
1784 uint64_t flag;
1785 const char *name;
1786 } loader_flags[] = {
1787 { EFI_LOADER_FEATURE_BOOT_COUNTING, "Boot counting" },
1788 { EFI_LOADER_FEATURE_CONFIG_TIMEOUT, "Menu timeout control" },
1789 { EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT, "One-shot menu timeout control" },
1790 { EFI_LOADER_FEATURE_ENTRY_DEFAULT, "Default entry control" },
1791 { EFI_LOADER_FEATURE_ENTRY_ONESHOT, "One-shot entry control" },
1792 { EFI_LOADER_FEATURE_XBOOTLDR, "Support for XBOOTLDR partition" },
1793 { EFI_LOADER_FEATURE_RANDOM_SEED, "Support for passing random seed to OS" },
1794 { EFI_LOADER_FEATURE_LOAD_DRIVER, "Load drop-in drivers" },
1795 { EFI_LOADER_FEATURE_SORT_KEY, "Support Type #1 sort-key field" },
1796 { EFI_LOADER_FEATURE_SAVED_ENTRY, "Support @saved pseudo-entry" },
1797 { EFI_LOADER_FEATURE_DEVICETREE, "Support Type #1 devicetree field" },
1798 };
1799 static const struct {
1800 uint64_t flag;
1801 const char *name;
1802 } stub_flags[] = {
1803 { EFI_STUB_FEATURE_REPORT_BOOT_PARTITION, "Stub sets ESP information" },
1804 { EFI_STUB_FEATURE_PICK_UP_CREDENTIALS, "Picks up credentials from boot partition" },
1805 { EFI_STUB_FEATURE_PICK_UP_SYSEXTS, "Picks up system extension images from boot partition" },
1806 { EFI_STUB_FEATURE_THREE_PCRS, "Measures kernel+command line+sysexts" },
1807 };
1808 _cleanup_free_ char *fw_type = NULL, *fw_info = NULL, *loader = NULL, *loader_path = NULL, *stub = NULL;
1809 sd_id128_t loader_part_uuid = SD_ID128_NULL;
1810 uint64_t loader_features = 0, stub_features = 0;
1811 Tpm2Support s;
1812 int have;
1813
1814 read_efi_var(EFI_LOADER_VARIABLE(LoaderFirmwareType), &fw_type);
1815 read_efi_var(EFI_LOADER_VARIABLE(LoaderFirmwareInfo), &fw_info);
1816 read_efi_var(EFI_LOADER_VARIABLE(LoaderInfo), &loader);
1817 read_efi_var(EFI_LOADER_VARIABLE(StubInfo), &stub);
1818 read_efi_var(EFI_LOADER_VARIABLE(LoaderImageIdentifier), &loader_path);
1819 (void) efi_loader_get_features(&loader_features);
1820 (void) efi_stub_get_features(&stub_features);
1821
1822 if (loader_path)
1823 efi_tilt_backslashes(loader_path);
1824
1825 k = efi_loader_get_device_part_uuid(&loader_part_uuid);
1826 if (k < 0 && k != -ENOENT)
1827 r = log_warning_errno(k, "Failed to read EFI variable LoaderDevicePartUUID: %m");
1828
1829 SecureBootMode secure = efi_get_secure_boot_mode();
1830 printf("%sSystem:%s\n", ansi_underline(), ansi_normal());
1831 printf(" Firmware: %s%s (%s)%s\n", ansi_highlight(), strna(fw_type), strna(fw_info), ansi_normal());
1832 printf(" Firmware Arch: %s\n", get_efi_arch());
1833 printf(" Secure Boot: %sd (%s)\n",
1834 enable_disable(IN_SET(secure, SECURE_BOOT_USER, SECURE_BOOT_DEPLOYED)),
1835 secure_boot_mode_to_string(secure));
1836
1837 s = tpm2_support();
1838 printf(" TPM2 Support: %s%s%s\n",
1839 FLAGS_SET(s, TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER) ? ansi_highlight_green() :
1840 (s & (TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER)) != 0 ? ansi_highlight_red() : ansi_highlight_yellow(),
1841 FLAGS_SET(s, TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER) ? "yes" :
1842 (s & TPM2_SUPPORT_FIRMWARE) ? "firmware only, driver unavailable" :
1843 (s & TPM2_SUPPORT_DRIVER) ? "driver only, firmware unavailable" : "no",
1844 ansi_normal());
1845
1846 k = efi_get_reboot_to_firmware();
1847 if (k > 0)
1848 printf(" Boot into FW: %sactive%s\n", ansi_highlight_yellow(), ansi_normal());
1849 else if (k == 0)
1850 printf(" Boot into FW: supported\n");
1851 else if (k == -EOPNOTSUPP)
1852 printf(" Boot into FW: not supported\n");
1853 else {
1854 errno = -k;
1855 printf(" Boot into FW: %sfailed%s (%m)\n", ansi_highlight_red(), ansi_normal());
1856 }
1857 printf("\n");
1858
1859 printf("%sCurrent Boot Loader:%s\n", ansi_underline(), ansi_normal());
1860 printf(" Product: %s%s%s\n", ansi_highlight(), strna(loader), ansi_normal());
1861
1862 for (size_t i = 0; i < ELEMENTSOF(loader_flags); i++)
1863 print_yes_no_line(i == 0, FLAGS_SET(loader_features, loader_flags[i].flag), loader_flags[i].name);
1864
1865 sd_id128_t bootloader_esp_uuid;
1866 bool have_bootloader_esp_uuid = efi_loader_get_device_part_uuid(&bootloader_esp_uuid) >= 0;
1867
1868 print_yes_no_line(false, have_bootloader_esp_uuid, "Boot loader sets ESP information");
1869 if (have_bootloader_esp_uuid && !sd_id128_is_null(esp_uuid) &&
1870 !sd_id128_equal(esp_uuid, bootloader_esp_uuid))
1871 printf("WARNING: The boot loader reports a different ESP UUID than detected ("SD_ID128_UUID_FORMAT_STR" vs. "SD_ID128_UUID_FORMAT_STR")!\n",
1872 SD_ID128_FORMAT_VAL(bootloader_esp_uuid),
1873 SD_ID128_FORMAT_VAL(esp_uuid));
1874
1875 if (stub) {
1876 printf(" Stub: %s\n", stub);
1877 for (size_t i = 0; i < ELEMENTSOF(stub_flags); i++)
1878 print_yes_no_line(i == 0, FLAGS_SET(stub_features, stub_flags[i].flag), stub_flags[i].name);
1879 }
1880 if (!sd_id128_is_null(loader_part_uuid))
1881 printf(" ESP: /dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR "\n",
1882 SD_ID128_FORMAT_VAL(loader_part_uuid));
1883 else
1884 printf(" ESP: n/a\n");
1885 printf(" File: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), strna(loader_path));
1886 printf("\n");
1887
1888 printf("%sRandom Seed:%s\n", ansi_underline(), ansi_normal());
1889 have = access(EFIVAR_PATH(EFI_LOADER_VARIABLE(LoaderRandomSeed)), F_OK) >= 0;
1890 printf(" Passed to OS: %s\n", yes_no(have));
1891 have = access(EFIVAR_PATH(EFI_LOADER_VARIABLE(LoaderSystemToken)), F_OK) >= 0;
1892 printf(" System Token: %s\n", have ? "set" : "not set");
1893
1894 if (arg_esp_path) {
1895 _cleanup_free_ char *p = NULL;
1896
1897 p = path_join(arg_esp_path, "/loader/random-seed");
1898 if (!p)
1899 return log_oom();
1900
1901 have = access(p, F_OK) >= 0;
1902 printf(" Exists: %s\n", yes_no(have));
1903 }
1904
1905 printf("\n");
1906 } else
1907 printf("%sSystem:%s\n"
1908 "Not booted with EFI\n\n",
1909 ansi_underline(), ansi_normal());
1910
1911 if (arg_esp_path) {
1912 k = status_binaries(arg_esp_path, esp_uuid);
1913 if (k < 0)
1914 r = k;
1915 }
1916
1917 if (!arg_root && is_efi_boot()) {
1918 k = status_variables();
1919 if (k < 0)
1920 r = k;
1921 }
1922
1923 if (arg_esp_path || arg_xbootldr_path) {
1924 _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
1925
1926 k = boot_config_load_and_select(&config,
1927 arg_esp_path, esp_devid,
1928 arg_xbootldr_path, xbootldr_devid);
1929 if (k < 0)
1930 r = k;
1931 else {
1932 k = status_entries(&config,
1933 arg_esp_path, esp_uuid,
1934 arg_xbootldr_path, xbootldr_uuid);
1935 if (k < 0)
1936 r = k;
1937 }
1938 }
1939
1940 return r;
1941 }
1942
1943 static int verb_list(int argc, char *argv[], void *userdata) {
1944 _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
1945 dev_t esp_devid = 0, xbootldr_devid = 0;
1946 int r;
1947
1948 /* If we lack privileges we invoke find_esp_and_warn() in "unprivileged mode" here, which does two
1949 * things: turn off logging about access errors and turn off potentially privileged device probing.
1950 * Here we're interested in the latter but not the former, hence request the mode, and log about
1951 * EACCES. */
1952
1953 r = acquire_esp(/* unprivileged_mode= */ geteuid() != 0, /* graceful= */ false, NULL, NULL, NULL, NULL, &esp_devid);
1954 if (r == -EACCES) /* We really need the ESP path for this call, hence also log about access errors */
1955 return log_error_errno(r, "Failed to determine ESP location: %m");
1956 if (r < 0)
1957 return r;
1958
1959 r = acquire_xbootldr(/* unprivileged_mode= */ geteuid() != 0, NULL, &xbootldr_devid);
1960 if (r == -EACCES)
1961 return log_error_errno(r, "Failed to determine XBOOTLDR partition: %m");
1962 if (r < 0)
1963 return r;
1964
1965 r = boot_config_load_and_select(&config, arg_esp_path, esp_devid, arg_xbootldr_path, xbootldr_devid);
1966 if (r < 0)
1967 return r;
1968
1969 if (config.n_entries == 0 && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) {
1970 log_info("No boot loader entries found.");
1971 return 0;
1972 }
1973
1974 pager_open(arg_pager_flags);
1975 return show_boot_entries(&config, arg_json_format_flags);
1976 }
1977
1978 static int install_random_seed(const char *esp) {
1979 _cleanup_(unlink_and_freep) char *tmp = NULL;
1980 _cleanup_free_ void *buffer = NULL;
1981 _cleanup_free_ char *path = NULL;
1982 _cleanup_close_ int fd = -1;
1983 size_t sz, token_size;
1984 ssize_t n;
1985 int r;
1986
1987 assert(esp);
1988
1989 path = path_join(esp, "/loader/random-seed");
1990 if (!path)
1991 return log_oom();
1992
1993 sz = random_pool_size();
1994
1995 buffer = malloc(sz);
1996 if (!buffer)
1997 return log_oom();
1998
1999 r = crypto_random_bytes(buffer, sz);
2000 if (r < 0)
2001 return log_error_errno(r, "Failed to acquire random seed: %m");
2002
2003 /* Normally create_subdirs() should already have created everything we need, but in case "bootctl
2004 * random-seed" is called we want to just create the minimum we need for it, and not the full
2005 * list. */
2006 r = mkdir_parents(path, 0755);
2007 if (r < 0)
2008 return log_error_errno(r, "Failed to create parent directory for %s: %m", path);
2009
2010 r = tempfn_random(path, "bootctl", &tmp);
2011 if (r < 0)
2012 return log_oom();
2013
2014 fd = open(tmp, O_CREAT|O_EXCL|O_NOFOLLOW|O_NOCTTY|O_WRONLY|O_CLOEXEC, 0600);
2015 if (fd < 0) {
2016 tmp = mfree(tmp);
2017 return log_error_errno(fd, "Failed to open random seed file for writing: %m");
2018 }
2019
2020 n = write(fd, buffer, sz);
2021 if (n < 0)
2022 return log_error_errno(errno, "Failed to write random seed file: %m");
2023 if ((size_t) n != sz)
2024 return log_error_errno(SYNTHETIC_ERRNO(EIO), "Short write while writing random seed file.");
2025
2026 if (rename(tmp, path) < 0)
2027 return log_error_errno(r, "Failed to move random seed file into place: %m");
2028
2029 tmp = mfree(tmp);
2030
2031 log_info("Random seed file %s successfully written (%zu bytes).", path, sz);
2032
2033 if (!arg_touch_variables)
2034 return 0;
2035
2036 if (!is_efi_boot()) {
2037 log_notice("Not booted with EFI, skipping EFI variable setup.");
2038 return 0;
2039 }
2040
2041 if (arg_root) {
2042 log_warning("Acting on %s, skipping EFI variable setup.",
2043 arg_image ? "image" : "root directory");
2044 return 0;
2045 }
2046
2047 r = getenv_bool("SYSTEMD_WRITE_SYSTEM_TOKEN");
2048 if (r < 0) {
2049 if (r != -ENXIO)
2050 log_warning_errno(r, "Failed to parse $SYSTEMD_WRITE_SYSTEM_TOKEN, ignoring.");
2051
2052 if (detect_vm() > 0) {
2053 /* Let's not write a system token if we detect we are running in a VM
2054 * environment. Why? Our default security model for the random seed uses the system
2055 * token as a mechanism to ensure we are not vulnerable to golden master sloppiness
2056 * issues, i.e. that people initialize the random seed file, then copy the image to
2057 * many systems and end up with the same random seed in each that is assumed to be
2058 * valid but in reality is the same for all machines. By storing a system token in
2059 * the EFI variable space we can make sure that even though the random seeds on disk
2060 * are all the same they will be different on each system under the assumption that
2061 * the EFI variable space is maintained separate from the random seed storage. That
2062 * is generally the case on physical systems, as the ESP is stored on persistent
2063 * storage, and the EFI variables in NVRAM. However in virtualized environments this
2064 * is generally not true: the EFI variable set is typically stored along with the
2065 * disk image itself. For example, using the OVMF EFI firmware the EFI variables are
2066 * stored in a file in the ESP itself. */
2067
2068 log_notice("Not installing system token, since we are running in a virtualized environment.");
2069 return 0;
2070 }
2071 } else if (r == 0) {
2072 log_notice("Not writing system token, because $SYSTEMD_WRITE_SYSTEM_TOKEN is set to false.");
2073 return 0;
2074 }
2075
2076 r = efi_get_variable(EFI_LOADER_VARIABLE(LoaderSystemToken), NULL, NULL, &token_size);
2077 if (r == -ENODATA)
2078 log_debug_errno(r, "LoaderSystemToken EFI variable is invalid (too short?), replacing.");
2079 else if (r < 0) {
2080 if (r != -ENOENT)
2081 return log_error_errno(r, "Failed to test system token validity: %m");
2082 } else {
2083 if (token_size >= sz) {
2084 /* Let's avoid writes if we can, and initialize this only once. */
2085 log_debug("System token already written, not updating.");
2086 return 0;
2087 }
2088
2089 log_debug("Existing system token size (%zu) does not match our expectations (%zu), replacing.", token_size, sz);
2090 }
2091
2092 r = crypto_random_bytes(buffer, sz);
2093 if (r < 0)
2094 return log_error_errno(r, "Failed to acquire random seed: %m");
2095
2096 /* Let's write this variable with an umask in effect, so that unprivileged users can't see the token
2097 * and possibly get identification information or too much insight into the kernel's entropy pool
2098 * state. */
2099 RUN_WITH_UMASK(0077) {
2100 r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderSystemToken), buffer, sz);
2101 if (r < 0) {
2102 if (!arg_graceful)
2103 return log_error_errno(r, "Failed to write 'LoaderSystemToken' EFI variable: %m");
2104
2105 if (r == -EINVAL)
2106 log_warning_errno(r, "Unable to write 'LoaderSystemToken' EFI variable (firmware problem?), ignoring: %m");
2107 else
2108 log_warning_errno(r, "Unable to write 'LoaderSystemToken' EFI variable, ignoring: %m");
2109 } else
2110 log_info("Successfully initialized system token in EFI variable with %zu bytes.", sz);
2111 }
2112
2113 return 0;
2114 }
2115
2116 static int sync_everything(void) {
2117 int ret = 0, k;
2118
2119 if (arg_esp_path) {
2120 k = syncfs_path(AT_FDCWD, arg_esp_path);
2121 if (k < 0)
2122 ret = log_error_errno(k, "Failed to synchronize the ESP '%s': %m", arg_esp_path);
2123 }
2124
2125 if (arg_xbootldr_path) {
2126 k = syncfs_path(AT_FDCWD, arg_xbootldr_path);
2127 if (k < 0)
2128 ret = log_error_errno(k, "Failed to synchronize $BOOT '%s': %m", arg_xbootldr_path);
2129 }
2130
2131 return ret;
2132 }
2133
2134 static int verb_install(int argc, char *argv[], void *userdata) {
2135 sd_id128_t uuid = SD_ID128_NULL;
2136 uint64_t pstart = 0, psize = 0;
2137 uint32_t part = 0;
2138 bool install, graceful;
2139 int r;
2140
2141 /* Invoked for both "update" and "install" */
2142
2143 install = streq(argv[0], "install");
2144 graceful = !install && arg_graceful; /* support graceful mode for updates */
2145
2146 r = acquire_esp(/* unprivileged_mode= */ false, graceful, &part, &pstart, &psize, &uuid, NULL);
2147 if (graceful && r == -ENOKEY)
2148 return 0; /* If --graceful is specified and we can't find an ESP, handle this cleanly */
2149 if (r < 0)
2150 return r;
2151
2152 if (!install) {
2153 /* If we are updating, don't do anything if sd-boot wasn't actually installed. */
2154 r = are_we_installed(arg_esp_path);
2155 if (r < 0)
2156 return r;
2157 if (r == 0) {
2158 log_debug("Skipping update because sd-boot is not installed in the ESP.");
2159 return 0;
2160 }
2161 }
2162
2163 r = acquire_xbootldr(/* unprivileged_mode= */ false, NULL, NULL);
2164 if (r < 0)
2165 return r;
2166
2167 r = settle_make_entry_directory();
2168 if (r < 0)
2169 return r;
2170
2171 const char *arch = arg_arch_all ? "" : get_efi_arch();
2172
2173 RUN_WITH_UMASK(0002) {
2174 if (install) {
2175 /* Don't create any of these directories when we are just updating. When we update
2176 * we'll drop-in our files (unless there are newer ones already), but we won't create
2177 * the directories for them in the first place. */
2178 r = create_subdirs(arg_esp_path, esp_subdirs);
2179 if (r < 0)
2180 return r;
2181
2182 r = create_subdirs(arg_dollar_boot_path(), dollar_boot_subdirs);
2183 if (r < 0)
2184 return r;
2185 }
2186
2187 r = install_binaries(arg_esp_path, arch, install);
2188 if (r < 0)
2189 return r;
2190
2191 if (install) {
2192 r = install_loader_config(arg_esp_path);
2193 if (r < 0)
2194 return r;
2195
2196 r = install_entry_directory(arg_dollar_boot_path());
2197 if (r < 0)
2198 return r;
2199
2200 r = install_entry_token();
2201 if (r < 0)
2202 return r;
2203
2204 r = install_random_seed(arg_esp_path);
2205 if (r < 0)
2206 return r;
2207 }
2208
2209 r = install_loader_specification(arg_dollar_boot_path());
2210 if (r < 0)
2211 return r;
2212 }
2213
2214 (void) sync_everything();
2215
2216 if (!arg_touch_variables)
2217 return 0;
2218
2219 if (arg_arch_all) {
2220 log_info("Not changing EFI variables with --all-architectures.");
2221 return 0;
2222 }
2223
2224 char *path = strjoina("/EFI/systemd/systemd-boot", arch, ".efi");
2225 return install_variables(arg_esp_path, part, pstart, psize, uuid, path, install);
2226 }
2227
2228 static int verb_remove(int argc, char *argv[], void *userdata) {
2229 sd_id128_t uuid = SD_ID128_NULL;
2230 int r, q;
2231
2232 r = acquire_esp(/* unprivileged_mode= */ false, /* graceful= */ false, NULL, NULL, NULL, &uuid, NULL);
2233 if (r < 0)
2234 return r;
2235
2236 r = acquire_xbootldr(/* unprivileged_mode= */ false, NULL, NULL);
2237 if (r < 0)
2238 return r;
2239
2240 r = settle_make_entry_directory();
2241 if (r < 0)
2242 return r;
2243
2244 r = remove_binaries(arg_esp_path);
2245
2246 q = remove_file(arg_esp_path, "/loader/loader.conf");
2247 if (q < 0 && r >= 0)
2248 r = q;
2249
2250 q = remove_file(arg_esp_path, "/loader/random-seed");
2251 if (q < 0 && r >= 0)
2252 r = q;
2253
2254 q = remove_file(arg_esp_path, "/loader/entries.srel");
2255 if (q < 0 && r >= 0)
2256 r = q;
2257
2258 q = remove_subdirs(arg_esp_path, esp_subdirs);
2259 if (q < 0 && r >= 0)
2260 r = q;
2261
2262 q = remove_subdirs(arg_esp_path, dollar_boot_subdirs);
2263 if (q < 0 && r >= 0)
2264 r = q;
2265
2266 q = remove_entry_directory(arg_esp_path);
2267 if (q < 0 && r >= 0)
2268 r = q;
2269
2270 if (arg_xbootldr_path) {
2271 /* Remove a subset of these also from the XBOOTLDR partition if it exists */
2272
2273 q = remove_file(arg_xbootldr_path, "/loader/entries.srel");
2274 if (q < 0 && r >= 0)
2275 r = q;
2276
2277 q = remove_subdirs(arg_xbootldr_path, dollar_boot_subdirs);
2278 if (q < 0 && r >= 0)
2279 r = q;
2280
2281 q = remove_entry_directory(arg_xbootldr_path);
2282 if (q < 0 && r >= 0)
2283 r = q;
2284 }
2285
2286 (void) sync_everything();
2287
2288 if (!arg_touch_variables)
2289 return r;
2290
2291 if (arg_arch_all) {
2292 log_info("Not changing EFI variables with --all-architectures.");
2293 return r;
2294 }
2295
2296 char *path = strjoina("/EFI/systemd/systemd-boot", get_efi_arch(), ".efi");
2297 q = remove_variables(uuid, path, true);
2298 if (q < 0 && r >= 0)
2299 r = q;
2300
2301 q = remove_loader_variables();
2302 if (q < 0 && r >= 0)
2303 r = q;
2304
2305 return r;
2306 }
2307
2308 static int verb_is_installed(int argc, char *argv[], void *userdata) {
2309 int r;
2310
2311 r = acquire_esp(/* privileged_mode= */ false,
2312 /* graceful= */ arg_graceful,
2313 NULL, NULL, NULL, NULL, NULL);
2314 if (r < 0)
2315 return r;
2316
2317 r = are_we_installed(arg_esp_path);
2318 if (r < 0)
2319 return r;
2320
2321 if (r > 0) {
2322 if (!arg_quiet)
2323 puts("yes");
2324 return EXIT_SUCCESS;
2325 } else {
2326 if (!arg_quiet)
2327 puts("no");
2328 return EXIT_FAILURE;
2329 }
2330 }
2331
2332 static int parse_timeout(const char *arg1, char16_t **ret_timeout, size_t *ret_timeout_size) {
2333 char utf8[DECIMAL_STR_MAX(usec_t)];
2334 char16_t *encoded;
2335 usec_t timeout;
2336 int r;
2337
2338 assert(arg1);
2339 assert(ret_timeout);
2340 assert(ret_timeout_size);
2341
2342 if (streq(arg1, "menu-force"))
2343 timeout = USEC_INFINITY;
2344 else if (streq(arg1, "menu-hidden"))
2345 timeout = 0;
2346 else {
2347 r = parse_time(arg1, &timeout, USEC_PER_SEC);
2348 if (r < 0)
2349 return log_error_errno(r, "Failed to parse timeout '%s': %m", arg1);
2350 if (timeout != USEC_INFINITY && timeout > UINT32_MAX * USEC_PER_SEC)
2351 log_warning("Timeout is too long and will be treated as 'menu-force' instead.");
2352 }
2353
2354 xsprintf(utf8, USEC_FMT, MIN(timeout / USEC_PER_SEC, UINT32_MAX));
2355
2356 encoded = utf8_to_utf16(utf8, strlen(utf8));
2357 if (!encoded)
2358 return log_oom();
2359
2360 *ret_timeout = encoded;
2361 *ret_timeout_size = char16_strlen(encoded) * 2 + 2;
2362 return 0;
2363 }
2364
2365 static int parse_loader_entry_target_arg(const char *arg1, char16_t **ret_target, size_t *ret_target_size) {
2366 char16_t *encoded = NULL;
2367 int r;
2368
2369 assert(arg1);
2370 assert(ret_target);
2371 assert(ret_target_size);
2372
2373 if (streq(arg1, "@current")) {
2374 r = efi_get_variable(EFI_LOADER_VARIABLE(LoaderEntrySelected), NULL, (void *) ret_target, ret_target_size);
2375 if (r < 0)
2376 return log_error_errno(r, "Failed to get EFI variable 'LoaderEntrySelected': %m");
2377
2378 } else if (streq(arg1, "@oneshot")) {
2379 r = efi_get_variable(EFI_LOADER_VARIABLE(LoaderEntryOneShot), NULL, (void *) ret_target, ret_target_size);
2380 if (r < 0)
2381 return log_error_errno(r, "Failed to get EFI variable 'LoaderEntryOneShot': %m");
2382
2383 } else if (streq(arg1, "@default")) {
2384 r = efi_get_variable(EFI_LOADER_VARIABLE(LoaderEntryDefault), NULL, (void *) ret_target, ret_target_size);
2385 if (r < 0)
2386 return log_error_errno(r, "Failed to get EFI variable 'LoaderEntryDefault': %m");
2387
2388 } else if (arg1[0] == '@' && !streq(arg1, "@saved"))
2389 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unsupported special entry identifier: %s", arg1);
2390 else {
2391 encoded = utf8_to_utf16(arg1, strlen(arg1));
2392 if (!encoded)
2393 return log_oom();
2394
2395 *ret_target = encoded;
2396 *ret_target_size = char16_strlen(encoded) * 2 + 2;
2397 }
2398
2399 return 0;
2400 }
2401
2402 static int verb_set_efivar(int argc, char *argv[], void *userdata) {
2403 int r;
2404
2405 if (arg_root)
2406 return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
2407 "Acting on %s, skipping EFI variable setup.",
2408 arg_image ? "image" : "root directory");
2409
2410 if (!is_efi_boot())
2411 return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
2412 "Not booted with UEFI.");
2413
2414 if (access(EFIVAR_PATH(EFI_LOADER_VARIABLE(LoaderInfo)), F_OK) < 0) {
2415 if (errno == ENOENT) {
2416 log_error_errno(errno, "Not booted with a supported boot loader.");
2417 return -EOPNOTSUPP;
2418 }
2419
2420 return log_error_errno(errno, "Failed to detect whether boot loader supports '%s' operation: %m", argv[0]);
2421 }
2422
2423 if (detect_container() > 0)
2424 return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
2425 "'%s' operation not supported in a container.",
2426 argv[0]);
2427
2428 if (!arg_touch_variables)
2429 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
2430 "'%s' operation cannot be combined with --no-variables.",
2431 argv[0]);
2432
2433 const char *variable;
2434 int (* arg_parser)(const char *, char16_t **, size_t *);
2435
2436 if (streq(argv[0], "set-default")) {
2437 variable = EFI_LOADER_VARIABLE(LoaderEntryDefault);
2438 arg_parser = parse_loader_entry_target_arg;
2439 } else if (streq(argv[0], "set-oneshot")) {
2440 variable = EFI_LOADER_VARIABLE(LoaderEntryOneShot);
2441 arg_parser = parse_loader_entry_target_arg;
2442 } else if (streq(argv[0], "set-timeout")) {
2443 variable = EFI_LOADER_VARIABLE(LoaderConfigTimeout);
2444 arg_parser = parse_timeout;
2445 } else if (streq(argv[0], "set-timeout-oneshot")) {
2446 variable = EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot);
2447 arg_parser = parse_timeout;
2448 } else
2449 assert_not_reached();
2450
2451 if (isempty(argv[1])) {
2452 r = efi_set_variable(variable, NULL, 0);
2453 if (r < 0 && r != -ENOENT)
2454 return log_error_errno(r, "Failed to remove EFI variable '%s': %m", variable);
2455 } else {
2456 _cleanup_free_ char16_t *value = NULL;
2457 size_t value_size = 0;
2458
2459 r = arg_parser(argv[1], &value, &value_size);
2460 if (r < 0)
2461 return r;
2462 r = efi_set_variable(variable, value, value_size);
2463 if (r < 0)
2464 return log_error_errno(r, "Failed to update EFI variable '%s': %m", variable);
2465 }
2466
2467 return 0;
2468 }
2469
2470 static int verb_random_seed(int argc, char *argv[], void *userdata) {
2471 int r;
2472
2473 r = find_esp_and_warn(arg_root, arg_esp_path, false, &arg_esp_path, NULL, NULL, NULL, NULL, NULL);
2474 if (r == -ENOKEY) {
2475 /* find_esp_and_warn() doesn't warn about ENOKEY, so let's do that on our own */
2476 if (!arg_graceful)
2477 return log_error_errno(r, "Unable to find ESP.");
2478
2479 log_notice("No ESP found, not initializing random seed.");
2480 return 0;
2481 }
2482 if (r < 0)
2483 return r;
2484
2485 r = install_random_seed(arg_esp_path);
2486 if (r < 0)
2487 return r;
2488
2489 (void) sync_everything();
2490 return 0;
2491 }
2492
2493 static int verb_systemd_efi_options(int argc, char *argv[], void *userdata) {
2494 int r;
2495
2496 if (argc == 1) {
2497 _cleanup_free_ char *line = NULL, *new = NULL;
2498
2499 r = systemd_efi_options_variable(&line);
2500 if (r == -ENODATA)
2501 log_debug("No SystemdOptions EFI variable present in cache.");
2502 else if (r < 0)
2503 return log_error_errno(r, "Failed to read SystemdOptions EFI variable from cache: %m");
2504 else
2505 puts(line);
2506
2507 r = systemd_efi_options_efivarfs_if_newer(&new);
2508 if (r == -ENODATA) {
2509 if (line)
2510 log_notice("Note: SystemdOptions EFI variable has been removed since boot.");
2511 } else if (r < 0)
2512 log_warning_errno(r, "Failed to check SystemdOptions EFI variable in efivarfs, ignoring: %m");
2513 else if (new && !streq_ptr(line, new))
2514 log_notice("Note: SystemdOptions EFI variable has been modified since boot. New value: %s",
2515 new);
2516 } else {
2517 r = efi_set_variable_string(EFI_SYSTEMD_VARIABLE(SystemdOptions), argv[1]);
2518 if (r < 0)
2519 return log_error_errno(r, "Failed to set SystemdOptions EFI variable: %m");
2520 }
2521
2522 return 0;
2523 }
2524
2525 static int verb_reboot_to_firmware(int argc, char *argv[], void *userdata) {
2526 int r;
2527
2528 if (argc < 2) {
2529 r = efi_get_reboot_to_firmware();
2530 if (r > 0) {
2531 puts("active");
2532 return EXIT_SUCCESS; /* success */
2533 }
2534 if (r == 0) {
2535 puts("supported");
2536 return 1; /* recognizable error #1 */
2537 }
2538 if (r == -EOPNOTSUPP) {
2539 puts("not supported");
2540 return 2; /* recognizable error #2 */
2541 }
2542
2543 log_error_errno(r, "Failed to query reboot-to-firmware state: %m");
2544 return 3; /* other kind of error */
2545 } else {
2546 r = parse_boolean(argv[1]);
2547 if (r < 0)
2548 return log_error_errno(r, "Failed to parse argument: %s", argv[1]);
2549
2550 r = efi_set_reboot_to_firmware(r);
2551 if (r < 0)
2552 return log_error_errno(r, "Failed to set reboot-to-firmware option: %m");
2553
2554 return 0;
2555 }
2556 }
2557
2558 static int bootctl_main(int argc, char *argv[]) {
2559 static const Verb verbs[] = {
2560 { "help", VERB_ANY, VERB_ANY, 0, help },
2561 { "status", VERB_ANY, 1, VERB_DEFAULT, verb_status },
2562 { "install", VERB_ANY, 1, 0, verb_install },
2563 { "update", VERB_ANY, 1, 0, verb_install },
2564 { "remove", VERB_ANY, 1, 0, verb_remove },
2565 { "is-installed", VERB_ANY, 1, 0, verb_is_installed },
2566 { "list", VERB_ANY, 1, 0, verb_list },
2567 { "set-default", 2, 2, 0, verb_set_efivar },
2568 { "set-oneshot", 2, 2, 0, verb_set_efivar },
2569 { "set-timeout", 2, 2, 0, verb_set_efivar },
2570 { "set-timeout-oneshot", 2, 2, 0, verb_set_efivar },
2571 { "random-seed", VERB_ANY, 1, 0, verb_random_seed },
2572 { "systemd-efi-options", VERB_ANY, 2, 0, verb_systemd_efi_options },
2573 { "reboot-to-firmware", VERB_ANY, 2, 0, verb_reboot_to_firmware },
2574 {}
2575 };
2576
2577 return dispatch_verb(argc, argv, verbs, NULL);
2578 }
2579
2580 static int run(int argc, char *argv[]) {
2581 _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL;
2582 _cleanup_(umount_and_rmdir_and_freep) char *unlink_dir = NULL;
2583 int r;
2584
2585 log_parse_environment();
2586 log_open();
2587
2588 /* If we run in a container, automatically turn off EFI file system access */
2589 if (detect_container() > 0)
2590 arg_touch_variables = false;
2591
2592 r = parse_argv(argc, argv);
2593 if (r <= 0)
2594 return r;
2595
2596 /* Open up and mount the image */
2597 if (arg_image) {
2598 assert(!arg_root);
2599
2600 r = mount_image_privately_interactively(
2601 arg_image,
2602 DISSECT_IMAGE_GENERIC_ROOT |
2603 DISSECT_IMAGE_RELAX_VAR_CHECK,
2604 &unlink_dir,
2605 &loop_device);
2606 if (r < 0)
2607 return r;
2608
2609 arg_root = strdup(unlink_dir);
2610 if (!arg_root)
2611 return log_oom();
2612 }
2613
2614 return bootctl_main(argc, argv);
2615 }
2616
2617 DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run);
Unnamed repository; edit this file 'description' to name the repository.