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 "copy.h"
  19 #include "devnum-util.h"
  20 #include "dirent-util.h"
  21 #include "efi-api.h"
  22 #include "efi-loader.h"
  23 #include "efivars.h"
  24 #include "env-file.h"
  25 #include "env-util.h"
  26 #include "escape.h"
  27 #include "fd-util.h"
  28 #include "fileio.h"
  29 #include "find-esp.h"
  30 #include "fs-util.h"
  31 #include "glyph-util.h"
  32 #include "main-func.h"
  33 #include "mkdir.h"
  34 #include "os-util.h"
  35 #include "pager.h"
  36 #include "parse-argument.h"
  37 #include "parse-util.h"
  38 #include "pretty-print.h"
  39 #include "random-util.h"
  40 #include "rm-rf.h"
  41 #include "stat-util.h"
  42 #include "stdio-util.h"
  43 #include "string-table.h"
  44 #include "string-util.h"
  45 #include "strv.h"
  46 #include "sync-util.h"
  47 #include "terminal-util.h"
  48 #include "tmpfile-util.h"
  49 #include "tmpfile-util-label.h"
  50 #include "tpm2-util.h"
  51 #include "umask-util.h"
  52 #include "utf8.h"
  53 #include "util.h"
  54 #include "verbs.h"
  55 #include "virt.h"
  56
  57 static char *arg_esp_path = NULL;
  58 static char *arg_xbootldr_path = NULL;
  59 static bool arg_print_esp_path = false;
  60 static bool arg_print_dollar_boot_path = false;
  61 static bool arg_touch_variables = true;
  62 static PagerFlags arg_pager_flags = 0;
  63 static bool arg_graceful = false;
  64 static bool arg_quiet = false;
  65 static int arg_make_entry_directory = false; /* tri-state: < 0 for automatic logic */
  66 static sd_id128_t arg_machine_id = SD_ID128_NULL;
  67 static char *arg_install_layout = NULL;
  68 static enum {
  69         ARG_ENTRY_TOKEN_MACHINE_ID,
  70         ARG_ENTRY_TOKEN_OS_IMAGE_ID,
  71         ARG_ENTRY_TOKEN_OS_ID,
  72         ARG_ENTRY_TOKEN_LITERAL,
  73         ARG_ENTRY_TOKEN_AUTO,
  74 } arg_entry_token_type = ARG_ENTRY_TOKEN_AUTO;
  75 static char *arg_entry_token = NULL;
  76 static JsonFormatFlags arg_json_format_flags = JSON_FORMAT_OFF;
  77
  78 STATIC_DESTRUCTOR_REGISTER(arg_esp_path, freep);
  79 STATIC_DESTRUCTOR_REGISTER(arg_xbootldr_path, freep);
  80 STATIC_DESTRUCTOR_REGISTER(arg_install_layout, freep);
  81 STATIC_DESTRUCTOR_REGISTER(arg_entry_token, freep);
  82
  83 static const char *arg_dollar_boot_path(void) {
  84         /* $BOOT shall be the XBOOTLDR partition if it exists, and otherwise the ESP */
  85         return arg_xbootldr_path ?: arg_esp_path;
  86 }
  87
  88 static int acquire_esp(
  89                 bool unprivileged_mode,
  90                 bool graceful,
  91                 uint32_t *ret_part,
  92                 uint64_t *ret_pstart,
  93                 uint64_t *ret_psize,
  94                 sd_id128_t *ret_uuid,
  95                 dev_t *ret_devid) {
  96
  97         char *np;
  98         int r;
  99
 100         /* Find the ESP, and log about errors. Note that find_esp_and_warn() will log in all error cases on
 101          * its own, except for ENOKEY (which is good, we want to show our own message in that case,
 102          * suggesting use of --esp-path=) and EACCESS (only when we request unprivileged mode; in this case
 103          * we simply eat up the error here, so that --list and --status work too, without noise about
 104          * this). */
 105
 106         r = find_esp_and_warn(arg_esp_path, unprivileged_mode, &np, ret_part, ret_pstart, ret_psize, ret_uuid, ret_devid);
 107         if (r == -ENOKEY) {
 108                 if (graceful)
 109                         return log_full_errno(arg_quiet ? LOG_DEBUG : LOG_INFO, r,
 110                                               "Couldn't find EFI system partition, skipping.");
 111
 112                 return log_error_errno(r,
 113                                        "Couldn't find EFI system partition. It is recommended to mount it to /boot or /efi.\n"
 114                                        "Alternatively, use --esp-path= to specify path to mount point.");
 115         }
 116         if (r < 0)
 117                 return r;
 118
 119         free_and_replace(arg_esp_path, np);
 120         log_debug("Using EFI System Partition at %s.", arg_esp_path);
 121
 122         return 0;
 123 }
 124
 125 static int acquire_xbootldr(
 126                 bool unprivileged_mode,
 127                 sd_id128_t *ret_uuid,
 128                 dev_t *ret_devid) {
 129
 130         char *np;
 131         int r;
 132
 133         r = find_xbootldr_and_warn(arg_xbootldr_path, unprivileged_mode, &np, ret_uuid, ret_devid);
 134         if (r == -ENOKEY) {
 135                 log_debug_errno(r, "Didn't find an XBOOTLDR partition, using the ESP as $BOOT.");
 136                 arg_xbootldr_path = mfree(arg_xbootldr_path);
 137
 138                 if (ret_uuid)
 139                         *ret_uuid = SD_ID128_NULL;
 140                 if (ret_devid)
 141                         *ret_devid = 0;
 142                 return 0;
 143         }
 144         if (r < 0)
 145                 return r;
 146
 147         free_and_replace(arg_xbootldr_path, np);
 148         log_debug("Using XBOOTLDR partition at %s as $BOOT.", arg_xbootldr_path);
 149
 150         return 1;
 151 }
 152
 153 static int load_etc_machine_id(void) {
 154         int r;
 155
 156         r = sd_id128_get_machine(&arg_machine_id);
 157         if (IN_SET(r, -ENOENT, -ENOMEDIUM)) /* Not set or empty */
 158                 return 0;
 159         if (r < 0)
 160                 return log_error_errno(r, "Failed to get machine-id: %m");
 161
 162         log_debug("Loaded machine ID %s from /etc/machine-id.", SD_ID128_TO_STRING(arg_machine_id));
 163         return 0;
 164 }
 165
 166 static int load_etc_machine_info(void) {
 167         /* systemd v250 added support to store the kernel-install layout setting and the machine ID to use
 168          * for setting up the ESP in /etc/machine-info. The newer /etc/kernel/entry-token file, as well as
 169          * the $layout field in /etc/kernel/install.conf are better replacements for this though, hence this
 170          * has been deprecated and is only returned for compatibility. */
 171         _cleanup_free_ char *s = NULL, *layout = NULL;
 172         int r;
 173
 174         r = parse_env_file(NULL, "/etc/machine-info",
 175                            "KERNEL_INSTALL_LAYOUT", &layout,
 176                            "KERNEL_INSTALL_MACHINE_ID", &s);
 177         if (r == -ENOENT)
 178                 return 0;
 179         if (r < 0)
 180                 return log_error_errno(r, "Failed to parse /etc/machine-info: %m");
 181
 182         if (!isempty(s)) {
 183                 if (!arg_quiet)
 184                         log_notice("Read $KERNEL_INSTALL_MACHINE_ID from /etc/machine-info. "
 185                                    "Please move it to /etc/kernel/entry-token.");
 186
 187                 r = sd_id128_from_string(s, &arg_machine_id);
 188                 if (r < 0)
 189                         return log_error_errno(r, "Failed to parse KERNEL_INSTALL_MACHINE_ID=%s in /etc/machine-info: %m", s);
 190
 191                 log_debug("Loaded KERNEL_INSTALL_MACHINE_ID=%s from KERNEL_INSTALL_MACHINE_ID in /etc/machine-info.",
 192                           SD_ID128_TO_STRING(arg_machine_id));
 193         }
 194
 195         if (!isempty(layout)) {
 196                 if (!arg_quiet)
 197                         log_notice("Read $KERNEL_INSTALL_LAYOUT from /etc/machine-info. "
 198                                    "Please move it to the layout= setting of /etc/kernel/install.conf.");
 199
 200                 log_debug("KERNEL_INSTALL_LAYOUT=%s is specified in /etc/machine-info.", layout);
 201                 free_and_replace(arg_install_layout, layout);
 202         }
 203
 204         return 0;
 205 }
 206
 207 static int load_etc_kernel_install_conf(void) {
 208         _cleanup_free_ char *layout = NULL;
 209         int r;
 210
 211         r = parse_env_file(NULL, "/etc/kernel/install.conf",
 212                            "layout", &layout);
 213         if (r == -ENOENT)
 214                 return 0;
 215         if (r < 0)
 216                 return log_error_errno(r, "Failed to parse /etc/kernel/install.conf: %m");
 217
 218         if (!isempty(layout)) {
 219                 log_debug("layout=%s is specified in /etc/machine-info.", layout);
 220                 free_and_replace(arg_install_layout, layout);
 221         }
 222
 223         return 0;
 224 }
 225
 226 static int settle_entry_token(void) {
 227         int r;
 228
 229         switch (arg_entry_token_type) {
 230
 231         case ARG_ENTRY_TOKEN_AUTO: {
 232                 _cleanup_free_ char *buf = NULL;
 233                 r = read_one_line_file("/etc/kernel/entry-token", &buf);
 234                 if (r < 0 && r != -ENOENT)
 235                         return log_error_errno(r, "Failed to read /etc/kernel/entry-token: %m");
 236
 237                 if (!isempty(buf)) {
 238                         free_and_replace(arg_entry_token, buf);
 239                         arg_entry_token_type = ARG_ENTRY_TOKEN_LITERAL;
 240                 } else if (sd_id128_is_null(arg_machine_id)) {
 241                         _cleanup_free_ char *id = NULL, *image_id = NULL;
 242
 243                         r = parse_os_release(NULL,
 244                                              "IMAGE_ID", &image_id,
 245                                              "ID", &id);
 246                         if (r < 0)
 247                                 return log_error_errno(r, "Failed to load /etc/os-release: %m");
 248
 249                         if (!isempty(image_id)) {
 250                                 free_and_replace(arg_entry_token, image_id);
 251                                 arg_entry_token_type = ARG_ENTRY_TOKEN_OS_IMAGE_ID;
 252                         } else if (!isempty(id)) {
 253                                 free_and_replace(arg_entry_token, id);
 254                                 arg_entry_token_type = ARG_ENTRY_TOKEN_OS_ID;
 255                         } else
 256                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No machine ID set, and /etc/os-release carries no ID=/IMAGE_ID= fields.");
 257                 } else {
 258                         r = free_and_strdup_warn(&arg_entry_token, SD_ID128_TO_STRING(arg_machine_id));
 259                         if (r < 0)
 260                                 return r;
 261
 262                         arg_entry_token_type = ARG_ENTRY_TOKEN_MACHINE_ID;
 263                 }
 264
 265                 break;
 266         }
 267
 268         case ARG_ENTRY_TOKEN_MACHINE_ID:
 269                 if (sd_id128_is_null(arg_machine_id))
 270                         return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No machine ID set.");
 271
 272                 r = free_and_strdup_warn(&arg_entry_token, SD_ID128_TO_STRING(arg_machine_id));
 273                 if (r < 0)
 274                         return r;
 275
 276                 break;
 277
 278         case ARG_ENTRY_TOKEN_OS_IMAGE_ID: {
 279                 _cleanup_free_ char *buf = NULL;
 280
 281                 r = parse_os_release(NULL, "IMAGE_ID", &buf);
 282                 if (r < 0)
 283                         return log_error_errno(r, "Failed to load /etc/os-release: %m");
 284
 285                 if (isempty(buf))
 286                         return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "IMAGE_ID= field not set in /etc/os-release.");
 287
 288                 free_and_replace(arg_entry_token, buf);
 289                 break;
 290         }
 291
 292         case ARG_ENTRY_TOKEN_OS_ID: {
 293                 _cleanup_free_ char *buf = NULL;
 294
 295                 r = parse_os_release(NULL, "ID", &buf);
 296                 if (r < 0)
 297                         return log_error_errno(r, "Failed to load /etc/os-release: %m");
 298
 299                 if (isempty(buf))
 300                         return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "ID= field not set in /etc/os-release.");
 301
 302                 free_and_replace(arg_entry_token, buf);
 303                 break;
 304         }
 305
 306         case ARG_ENTRY_TOKEN_LITERAL:
 307                 assert(!isempty(arg_entry_token)); /* already filled in by command line parser */
 308                 break;
 309         }
 310
 311         if (isempty(arg_entry_token) || !string_is_safe(arg_entry_token))
 312                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Selected entry token not valid: %s", arg_entry_token);
 313
 314         log_debug("Using entry token: %s", arg_entry_token);
 315         return 0;
 316 }
 317
 318 static bool use_boot_loader_spec_type1(void) {
 319         /* If the layout is not specified, or if it is set explicitly to "bls" we assume Boot Loader
 320          * Specification Type #1 is the chosen format for our boot loader entries */
 321         return !arg_install_layout || streq(arg_install_layout, "bls");
 322 }
 323
 324 static int settle_make_entry_directory(void) {
 325         int r;
 326
 327         r = load_etc_machine_id();
 328         if (r < 0)
 329                 return r;
 330
 331         r = load_etc_machine_info();
 332         if (r < 0)
 333                 return r;
 334
 335         r = load_etc_kernel_install_conf();
 336         if (r < 0)
 337                 return r;
 338
 339         r = settle_entry_token();
 340         if (r < 0)
 341                 return r;
 342
 343         bool layout_type1 = use_boot_loader_spec_type1();
 344         if (arg_make_entry_directory < 0) { /* Automatic mode */
 345                 if (layout_type1) {
 346                         if (arg_entry_token == ARG_ENTRY_TOKEN_MACHINE_ID) {
 347                                 r = path_is_temporary_fs("/etc/machine-id");
 348                                 if (r < 0)
 349                                         return log_debug_errno(r, "Couldn't determine whether /etc/machine-id is on a temporary file system: %m");
 350
 351                                 arg_make_entry_directory = r == 0;
 352                         } else
 353                                 arg_make_entry_directory = true;
 354                 } else
 355                         arg_make_entry_directory = false;
 356         }
 357
 358         if (arg_make_entry_directory > 0 && !layout_type1)
 359                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 360                                        "KERNEL_INSTALL_LAYOUT=%s is configured, but Boot Loader Specification Type #1 entry directory creation was requested.",
 361                                        arg_install_layout);
 362
 363         return 0;
 364 }
 365
 366 /* search for "#### LoaderInfo: systemd-boot 218 ####" string inside the binary */
 367 static int get_file_version(int fd, char **v) {
 368         struct stat st;
 369         char *buf;
 370         const char *s, *e;
 371         char *x = NULL;
 372         int r;
 373
 374         assert(fd >= 0);
 375         assert(v);
 376
 377         if (fstat(fd, &st) < 0)
 378                 return log_error_errno(errno, "Failed to stat EFI binary: %m");
 379
 380         r = stat_verify_regular(&st);
 381         if (r < 0)
 382                 return log_error_errno(r, "EFI binary is not a regular file: %m");
 383
 384         if (st.st_size < 27 || file_offset_beyond_memory_size(st.st_size)) {
 385                 *v = NULL;
 386                 return 0;
 387         }
 388
 389         buf = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
 390         if (buf == MAP_FAILED)
 391                 return log_error_errno(errno, "Failed to memory map EFI binary: %m");
 392
 393         s = mempmem_safe(buf, st.st_size - 8, "#### LoaderInfo: ", 17);
 394         if (!s)
 395                 goto finish;
 396
 397         e = memmem_safe(s, st.st_size - (s - buf), " ####", 5);
 398         if (!e || e - s < 3) {
 399                 r = log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Malformed version string.");
 400                 goto finish;
 401         }
 402
 403         x = strndup(s, e - s);
 404         if (!x) {
 405                 r = log_oom();
 406                 goto finish;
 407         }
 408         r = 1;
 409
 410 finish:
 411         (void) munmap(buf, st.st_size);
 412         *v = x;
 413         return r;
 414 }
 415
 416 static int enumerate_binaries(const char *esp_path, const char *path, const char *prefix) {
 417         _cleanup_closedir_ DIR *d = NULL;
 418         const char *p;
 419         int c = 0, r;
 420
 421         assert(esp_path);
 422         assert(path);
 423
 424         p = prefix_roota(esp_path, path);
 425         d = opendir(p);
 426         if (!d) {
 427                 if (errno == ENOENT)
 428                         return 0;
 429
 430                 return log_error_errno(errno, "Failed to read \"%s\": %m", p);
 431         }
 432
 433         FOREACH_DIRENT(de, d, break) {
 434                 _cleanup_free_ char *v = NULL;
 435                 _cleanup_close_ int fd = -1;
 436
 437                 if (!endswith_no_case(de->d_name, ".efi"))
 438                         continue;
 439
 440                 if (prefix && !startswith_no_case(de->d_name, prefix))
 441                         continue;
 442
 443                 fd = openat(dirfd(d), de->d_name, O_RDONLY|O_CLOEXEC);
 444                 if (fd < 0)
 445                         return log_error_errno(errno, "Failed to open \"%s/%s\" for reading: %m", p, de->d_name);
 446
 447                 r = get_file_version(fd, &v);
 448                 if (r < 0)
 449                         return r;
 450                 if (r > 0)
 451                         printf("         File: %s/%s/%s (%s%s%s)\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), path, de->d_name, ansi_highlight(), v, ansi_normal());
 452                 else
 453                         printf("         File: %s/%s/%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), path, de->d_name);
 454
 455                 c++;
 456         }
 457
 458         return c;
 459 }
 460
 461 static int status_binaries(const char *esp_path, sd_id128_t partition) {
 462         int r;
 463
 464         printf("Available Boot Loaders on ESP:\n");
 465
 466         if (!esp_path) {
 467                 printf("          ESP: Cannot find or access mount point of ESP.\n\n");
 468                 return -ENOENT;
 469         }
 470
 471         printf("          ESP: %s", esp_path);
 472         if (!sd_id128_is_null(partition))
 473                 printf(" (/dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR ")", SD_ID128_FORMAT_VAL(partition));
 474         printf("\n");
 475
 476         r = enumerate_binaries(esp_path, "EFI/systemd", NULL);
 477         if (r < 0)
 478                 goto finish;
 479         if (r == 0 && !arg_quiet)
 480                 log_info("systemd-boot not installed in ESP.");
 481
 482         r = enumerate_binaries(esp_path, "EFI/BOOT", "boot");
 483         if (r < 0)
 484                 goto finish;
 485         if (r == 0 && !arg_quiet)
 486                 log_info("No default/fallback boot loader installed in ESP.");
 487
 488         r = 0;
 489
 490 finish:
 491         printf("\n");
 492         return r;
 493 }
 494
 495 static int print_efi_option(uint16_t id, bool in_order) {
 496         _cleanup_free_ char *title = NULL;
 497         _cleanup_free_ char *path = NULL;
 498         sd_id128_t partition;
 499         bool active;
 500         int r;
 501
 502         r = efi_get_boot_option(id, &title, &partition, &path, &active);
 503         if (r < 0)
 504                 return r;
 505
 506         /* print only configured entries with partition information */
 507         if (!path || sd_id128_is_null(partition))
 508                 return 0;
 509
 510         efi_tilt_backslashes(path);
 511
 512         printf("        Title: %s%s%s\n", ansi_highlight(), strna(title), ansi_normal());
 513         printf("           ID: 0x%04X\n", id);
 514         printf("       Status: %sactive%s\n", active ? "" : "in", in_order ? ", boot-order" : "");
 515         printf("    Partition: /dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR "\n",
 516                SD_ID128_FORMAT_VAL(partition));
 517         printf("         File: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), path);
 518         printf("\n");
 519
 520         return 0;
 521 }
 522
 523 static int status_variables(void) {
 524         _cleanup_free_ uint16_t *options = NULL, *order = NULL;
 525         int n_options, n_order;
 526
 527         n_options = efi_get_boot_options(&options);
 528         if (n_options == -ENOENT)
 529                 return log_error_errno(n_options,
 530                                        "Failed to access EFI variables, efivarfs"
 531                                        " needs to be available at /sys/firmware/efi/efivars/.");
 532         if (n_options < 0)
 533                 return log_error_errno(n_options, "Failed to read EFI boot entries: %m");
 534
 535         n_order = efi_get_boot_order(&order);
 536         if (n_order == -ENOENT)
 537                 n_order = 0;
 538         else if (n_order < 0)
 539                 return log_error_errno(n_order, "Failed to read EFI boot order: %m");
 540
 541         /* print entries in BootOrder first */
 542         printf("Boot Loaders Listed in EFI Variables:\n");
 543         for (int i = 0; i < n_order; i++)
 544                 print_efi_option(order[i], true);
 545
 546         /* print remaining entries */
 547         for (int i = 0; i < n_options; i++) {
 548                 for (int j = 0; j < n_order; j++)
 549                         if (options[i] == order[j])
 550                                 goto next_option;
 551
 552                 print_efi_option(options[i], false);
 553
 554         next_option:
 555                 continue;
 556         }
 557
 558         return 0;
 559 }
 560
 561 static int boot_entry_file_check(const char *root, const char *p) {
 562         _cleanup_free_ char *path = NULL;
 563
 564         path = path_join(root, p);
 565         if (!path)
 566                 return log_oom();
 567
 568         return RET_NERRNO(access(path, F_OK));
 569 }
 570
 571 static void boot_entry_file_list(const char *field, const char *root, const char *p, int *ret_status) {
 572         int status = boot_entry_file_check(root, p);
 573
 574         printf("%13s%s ", strempty(field), field ? ":" : " ");
 575         if (status < 0) {
 576                 errno = -status;
 577                 printf("%s%s%s (%m)\n", ansi_highlight_red(), p, ansi_normal());
 578         } else
 579                 printf("%s\n", p);
 580
 581         if (*ret_status == 0 && status < 0)
 582                 *ret_status = status;
 583 }
 584
 585 static const char* const boot_entry_type_table[_BOOT_ENTRY_TYPE_MAX] = {
 586         [BOOT_ENTRY_CONF]        = "Boot Loader Specification Type #1 (.conf)",
 587         [BOOT_ENTRY_UNIFIED]     = "Boot Loader Specification Type #2 (.efi)",
 588         [BOOT_ENTRY_LOADER]      = "Reported by Boot Loader",
 589         [BOOT_ENTRY_LOADER_AUTO] = "Automatic",
 590 };
 591
 592 DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(boot_entry_type, BootEntryType);
 593
 594 static int boot_config_load_and_select(
 595                 BootConfig *config,
 596                 const char *esp_path,
 597                 dev_t esp_devid,
 598                 const char *xbootldr_path,
 599                 dev_t xbootldr_devid) {
 600
 601         _cleanup_strv_free_ char **efi_entries = NULL;
 602         int r;
 603
 604         /* If XBOOTLDR and ESP actually refer to the same block device, suppress XBOOTLDR, since it would
 605          * find the same entries twice. */
 606         bool same = esp_path && xbootldr_path && devnum_set_and_equal(esp_devid, xbootldr_devid);
 607
 608         r = boot_config_load(config, esp_path, same ? NULL : xbootldr_path);
 609         if (r < 0)
 610                 return r;
 611
 612         r = efi_loader_get_entries(&efi_entries);
 613         if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r))
 614                 log_debug_errno(r, "Boot loader reported no entries.");
 615         else if (r < 0)
 616                 log_warning_errno(r, "Failed to determine entries reported by boot loader, ignoring: %m");
 617         else
 618                 (void) boot_config_augment_from_loader(config, efi_entries, /* only_auto= */ false);
 619
 620         return boot_config_select_special_entries(config);
 621 }
 622
 623 static int boot_entry_show(
 624                 const BootEntry *e,
 625                 bool show_as_default,
 626                 bool show_as_selected,
 627                 bool show_reported) {
 628
 629         int status = 0;
 630
 631         /* Returns 0 on success, negative on processing error, and positive if something is wrong with the
 632            boot entry itself. */
 633
 634         assert(e);
 635
 636         printf("         type: %s\n",
 637                boot_entry_type_to_string(e->type));
 638
 639         printf("        title: %s%s%s",
 640                ansi_highlight(), boot_entry_title(e), ansi_normal());
 641
 642         if (show_as_default)
 643                 printf(" %s(default)%s",
 644                        ansi_highlight_green(), ansi_normal());
 645
 646         if (show_as_selected)
 647                 printf(" %s(selected)%s",
 648                        ansi_highlight_magenta(), ansi_normal());
 649
 650         if (show_reported) {
 651                 if (e->type == BOOT_ENTRY_LOADER)
 652                         printf(" %s(reported/absent)%s",
 653                                ansi_highlight_red(), ansi_normal());
 654                 else if (!e->reported_by_loader && e->type != BOOT_ENTRY_LOADER_AUTO)
 655                         printf(" %s(not reported/new)%s",
 656                                ansi_highlight_green(), ansi_normal());
 657         }
 658
 659         putchar('\n');
 660
 661         if (e->id)
 662                 printf("           id: %s\n", e->id);
 663         if (e->path) {
 664                 _cleanup_free_ char *link = NULL;
 665
 666                 /* Let's urlify the link to make it easy to view in an editor, but only if it is a text
 667                  * file. Unified images are binary ELFs, and EFI variables are not pure text either. */
 668                 if (e->type == BOOT_ENTRY_CONF)
 669                         (void) terminal_urlify_path(e->path, NULL, &link);
 670
 671                 printf("       source: %s\n", link ?: e->path);
 672         }
 673         if (e->sort_key)
 674                 printf("     sort-key: %s\n", e->sort_key);
 675         if (e->version)
 676                 printf("      version: %s\n", e->version);
 677         if (e->machine_id)
 678                 printf("   machine-id: %s\n", e->machine_id);
 679         if (e->architecture)
 680                 printf(" architecture: %s\n", e->architecture);
 681         if (e->kernel)
 682                 boot_entry_file_list("linux", e->root, e->kernel, &status);
 683
 684         STRV_FOREACH(s, e->initrd)
 685                 boot_entry_file_list(s == e->initrd ? "initrd" : NULL,
 686                                      e->root,
 687                                      *s,
 688                                      &status);
 689
 690         if (!strv_isempty(e->options)) {
 691                 _cleanup_free_ char *t = NULL, *t2 = NULL;
 692                 _cleanup_strv_free_ char **ts = NULL;
 693
 694                 t = strv_join(e->options, " ");
 695                 if (!t)
 696                         return log_oom();
 697
 698                 ts = strv_split_newlines(t);
 699                 if (!ts)
 700                         return log_oom();
 701
 702                 t2 = strv_join(ts, "\n              ");
 703                 if (!t2)
 704                         return log_oom();
 705
 706                 printf("      options: %s\n", t2);
 707         }
 708
 709         if (e->device_tree)
 710                 boot_entry_file_list("devicetree", e->root, e->device_tree, &status);
 711
 712         STRV_FOREACH(s, e->device_tree_overlay)
 713                 boot_entry_file_list(s == e->device_tree_overlay ? "devicetree-overlay" : NULL,
 714                                      e->root,
 715                                      *s,
 716                                      &status);
 717
 718         return -status;
 719 }
 720
 721 static int status_entries(
 722                 const BootConfig *config,
 723                 const char *esp_path,
 724                 sd_id128_t esp_partition_uuid,
 725                 const char *xbootldr_path,
 726                 sd_id128_t xbootldr_partition_uuid) {
 727
 728         sd_id128_t dollar_boot_partition_uuid;
 729         const char *dollar_boot_path;
 730         int r;
 731
 732         assert(config);
 733         assert(esp_path || xbootldr_path);
 734
 735         if (xbootldr_path) {
 736                 dollar_boot_path = xbootldr_path;
 737                 dollar_boot_partition_uuid = xbootldr_partition_uuid;
 738         } else {
 739                 dollar_boot_path = esp_path;
 740                 dollar_boot_partition_uuid = esp_partition_uuid;
 741         }
 742
 743         printf("Boot Loader Entries:\n"
 744                "        $BOOT: %s", dollar_boot_path);
 745         if (!sd_id128_is_null(dollar_boot_partition_uuid))
 746                 printf(" (/dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR ")",
 747                        SD_ID128_FORMAT_VAL(dollar_boot_partition_uuid));
 748         printf("\n\n");
 749
 750         if (config->default_entry < 0)
 751                 printf("%zu entries, no entry could be determined as default.\n", config->n_entries);
 752         else {
 753                 printf("Default Boot Loader Entry:\n");
 754
 755                 r = boot_entry_show(
 756                                 boot_config_default_entry(config),
 757                                 /* show_as_default= */ false,
 758                                 /* show_as_selected= */ false,
 759                                 /* show_discovered= */ false);
 760                 if (r > 0)
 761                         /* < 0 is already logged by the function itself, let's just emit an extra warning if
 762                            the default entry is broken */
 763                         printf("\nWARNING: default boot entry is broken\n");
 764         }
 765
 766         return 0;
 767 }
 768
 769 static int compare_product(const char *a, const char *b) {
 770         size_t x, y;
 771
 772         assert(a);
 773         assert(b);
 774
 775         x = strcspn(a, " ");
 776         y = strcspn(b, " ");
 777         if (x != y)
 778                 return x < y ? -1 : x > y ? 1 : 0;
 779
 780         return strncmp(a, b, x);
 781 }
 782
 783 static int compare_version(const char *a, const char *b) {
 784         assert(a);
 785         assert(b);
 786
 787         a += strcspn(a, " ");
 788         a += strspn(a, " ");
 789         b += strcspn(b, " ");
 790         b += strspn(b, " ");
 791
 792         return strverscmp_improved(a, b);
 793 }
 794
 795 static int version_check(int fd_from, const char *from, int fd_to, const char *to) {
 796         _cleanup_free_ char *a = NULL, *b = NULL;
 797         int r;
 798
 799         assert(fd_from >= 0);
 800         assert(from);
 801         assert(fd_to >= 0);
 802         assert(to);
 803
 804         r = get_file_version(fd_from, &a);
 805         if (r < 0)
 806                 return r;
 807         if (r == 0)
 808                 return log_notice_errno(SYNTHETIC_ERRNO(EREMOTE),
 809                                        "Source file \"%s\" does not carry version information!",
 810                                        from);
 811
 812         r = get_file_version(fd_to, &b);
 813         if (r < 0)
 814                 return r;
 815         if (r == 0 || compare_product(a, b) != 0)
 816                 return log_notice_errno(SYNTHETIC_ERRNO(EREMOTE),
 817                                         "Skipping \"%s\", since it's owned by another boot loader.",
 818                                         to);
 819
 820         r = compare_version(a, b);
 821         if (r < 0)
 822                 return log_warning_errno(SYNTHETIC_ERRNO(ESTALE), "Skipping \"%s\", since newer boot loader version in place already.", to);
 823         else if (r == 0)
 824                 return log_info_errno(SYNTHETIC_ERRNO(ESTALE), "Skipping \"%s\", since same boot loader version in place already.", to);
 825
 826         return 0;
 827 }
 828
 829 static int copy_file_with_version_check(const char *from, const char *to, bool force) {
 830         _cleanup_close_ int fd_from = -1, fd_to = -1;
 831         _cleanup_free_ char *t = NULL;
 832         int r;
 833
 834         fd_from = open(from, O_RDONLY|O_CLOEXEC|O_NOCTTY);
 835         if (fd_from < 0)
 836                 return log_error_errno(errno, "Failed to open \"%s\" for reading: %m", from);
 837
 838         if (!force) {
 839                 fd_to = open(to, O_RDONLY|O_CLOEXEC|O_NOCTTY);
 840                 if (fd_to < 0) {
 841                         if (errno != ENOENT)
 842                                 return log_error_errno(errno, "Failed to open \"%s\" for reading: %m", to);
 843                 } else {
 844                         r = version_check(fd_from, from, fd_to, to);
 845                         if (r < 0)
 846                                 return r;
 847
 848                         if (lseek(fd_from, 0, SEEK_SET) == (off_t) -1)
 849                                 return log_error_errno(errno, "Failed to seek in \"%s\": %m", from);
 850
 851                         fd_to = safe_close(fd_to);
 852                 }
 853         }
 854
 855         r = tempfn_random(to, NULL, &t);
 856         if (r < 0)
 857                 return log_oom();
 858
 859         RUN_WITH_UMASK(0000) {
 860                 fd_to = open(t, O_WRONLY|O_CREAT|O_CLOEXEC|O_EXCL|O_NOFOLLOW, 0644);
 861                 if (fd_to < 0)
 862                         return log_error_errno(errno, "Failed to open \"%s\" for writing: %m", t);
 863         }
 864
 865         r = copy_bytes(fd_from, fd_to, UINT64_MAX, COPY_REFLINK);
 866         if (r < 0) {
 867                 (void) unlink(t);
 868                 return log_error_errno(r, "Failed to copy data from \"%s\" to \"%s\": %m", from, t);
 869         }
 870
 871         (void) copy_times(fd_from, fd_to, 0);
 872
 873         r = fsync_full(fd_to);
 874         if (r < 0) {
 875                 (void) unlink_noerrno(t);
 876                 return log_error_errno(r, "Failed to copy data from \"%s\" to \"%s\": %m", from, t);
 877         }
 878
 879         if (renameat(AT_FDCWD, t, AT_FDCWD, to) < 0) {
 880                 (void) unlink_noerrno(t);
 881                 return log_error_errno(errno, "Failed to rename \"%s\" to \"%s\": %m", t, to);
 882         }
 883
 884         log_info("Copied \"%s\" to \"%s\".", from, to);
 885
 886         return 0;
 887 }
 888
 889 static int mkdir_one(const char *prefix, const char *suffix) {
 890         _cleanup_free_ char *p = NULL;
 891
 892         p = path_join(prefix, suffix);
 893         if (mkdir(p, 0700) < 0) {
 894                 if (errno != EEXIST)
 895                         return log_error_errno(errno, "Failed to create \"%s\": %m", p);
 896         } else
 897                 log_info("Created \"%s\".", p);
 898
 899         return 0;
 900 }
 901
 902 static const char *const esp_subdirs[] = {
 903         /* The directories to place in the ESP */
 904         "EFI",
 905         "EFI/systemd",
 906         "EFI/BOOT",
 907         "loader",
 908         NULL
 909 };
 910
 911 static const char *const dollar_boot_subdirs[] = {
 912         /* The directories to place in the XBOOTLDR partition or the ESP, depending what exists */
 913         "loader",
 914         "loader/entries",  /* Type #1 entries */
 915         "EFI",
 916         "EFI/Linux",       /* Type #2 entries */
 917         NULL
 918 };
 919
 920 static int create_subdirs(const char *root, const char * const *subdirs) {
 921         int r;
 922
 923         STRV_FOREACH(i, subdirs) {
 924                 r = mkdir_one(root, *i);
 925                 if (r < 0)
 926                         return r;
 927         }
 928
 929         return 0;
 930 }
 931
 932 static int copy_one_file(const char *esp_path, const char *name, bool force) {
 933         const char *e;
 934         char *p, *q, *dest_name, *s;
 935         int r;
 936
 937         dest_name = strdupa_safe(name);
 938         s = endswith_no_case(dest_name, ".signed");
 939         if (s)
 940                 *s = 0;
 941
 942         p = strjoina(BOOTLIBDIR "/", name);
 943         q = strjoina(esp_path, "/EFI/systemd/", dest_name);
 944         r = copy_file_with_version_check(p, q, force);
 945
 946         e = startswith(dest_name, "systemd-boot");
 947         if (e) {
 948                 int k;
 949                 char *v;
 950
 951                 /* Create the EFI default boot loader name (specified for removable devices) */
 952                 v = strjoina(esp_path, "/EFI/BOOT/BOOT", e);
 953                 ascii_strupper(strrchr(v, '/') + 1);
 954
 955                 k = copy_file_with_version_check(p, v, force);
 956                 if (k < 0 && r == 0)
 957                         r = k;
 958         }
 959
 960         return r;
 961 }
 962
 963 static int install_binaries(const char *esp_path, bool force) {
 964         _cleanup_closedir_ DIR *d = NULL;
 965         int r = 0;
 966
 967         d = opendir(BOOTLIBDIR);
 968         if (!d)
 969                 return log_error_errno(errno, "Failed to open \""BOOTLIBDIR"\": %m");
 970
 971         FOREACH_DIRENT(de, d, return log_error_errno(errno, "Failed to read \""BOOTLIBDIR"\": %m")) {
 972                 int k;
 973
 974                 if (!endswith_no_case(de->d_name, ".efi") && !endswith_no_case(de->d_name, ".efi.signed"))
 975                         continue;
 976
 977                 /* skip the .efi file, if there's a .signed version of it */
 978                 if (endswith_no_case(de->d_name, ".efi")) {
 979                         _cleanup_free_ const char *s = strjoin(de->d_name, ".signed");
 980                         if (!s)
 981                                 return log_oom();
 982                         if (faccessat(dirfd(d), s, F_OK, 0) >= 0)
 983                                 continue;
 984                 }
 985
 986                 k = copy_one_file(esp_path, de->d_name, force);
 987                 /* Don't propagate an error code if no update necessary, installed version already equal or
 988                  * newer version, or other boot loader in place. */
 989                 if (arg_graceful && IN_SET(k, -ESTALE, -EREMOTE))
 990                         continue;
 991                 if (k < 0 && r == 0)
 992                         r = k;
 993         }
 994
 995         return r;
 996 }
 997
 998 static bool same_entry(uint16_t id, sd_id128_t uuid, const char *path) {
 999         _cleanup_free_ char *opath = NULL;
1000         sd_id128_t ouuid;
1001         int r;
1002
1003         r = efi_get_boot_option(id, NULL, &ouuid, &opath, NULL);
1004         if (r < 0)
1005                 return false;
1006         if (!sd_id128_equal(uuid, ouuid))
1007                 return false;
1008
1009         /* Some motherboards convert the path to uppercase under certain circumstances
1010          * (e.g. after booting into the Boot Menu in the ASUS ROG STRIX B350-F GAMING),
1011          * so use case-insensitive checking */
1012         if (!strcaseeq_ptr(path, opath))
1013                 return false;
1014
1015         return true;
1016 }
1017
1018 static int find_slot(sd_id128_t uuid, const char *path, uint16_t *id) {
1019         _cleanup_free_ uint16_t *options = NULL;
1020         int n, i;
1021
1022         n = efi_get_boot_options(&options);
1023         if (n < 0)
1024                 return n;
1025
1026         /* find already existing systemd-boot entry */
1027         for (i = 0; i < n; i++)
1028                 if (same_entry(options[i], uuid, path)) {
1029                         *id = options[i];
1030                         return 1;
1031                 }
1032
1033         /* find free slot in the sorted BootXXXX variable list */
1034         for (i = 0; i < n; i++)
1035                 if (i != options[i]) {
1036                         *id = i;
1037                         return 0;
1038                 }
1039
1040         /* use the next one */
1041         if (i == 0xffff)
1042                 return -ENOSPC;
1043         *id = i;
1044         return 0;
1045 }
1046
1047 static int insert_into_order(uint16_t slot, bool first) {
1048         _cleanup_free_ uint16_t *order = NULL;
1049         uint16_t *t;
1050         int n;
1051
1052         n = efi_get_boot_order(&order);
1053         if (n <= 0)
1054                 /* no entry, add us */
1055                 return efi_set_boot_order(&slot, 1);
1056
1057         /* are we the first and only one? */
1058         if (n == 1 && order[0] == slot)
1059                 return 0;
1060
1061         /* are we already in the boot order? */
1062         for (int i = 0; i < n; i++) {
1063                 if (order[i] != slot)
1064                         continue;
1065
1066                 /* we do not require to be the first one, all is fine */
1067                 if (!first)
1068                         return 0;
1069
1070                 /* move us to the first slot */
1071                 memmove(order + 1, order, i * sizeof(uint16_t));
1072                 order[0] = slot;
1073                 return efi_set_boot_order(order, n);
1074         }
1075
1076         /* extend array */
1077         t = reallocarray(order, n + 1, sizeof(uint16_t));
1078         if (!t)
1079                 return -ENOMEM;
1080         order = t;
1081
1082         /* add us to the top or end of the list */
1083         if (first) {
1084                 memmove(order + 1, order, n * sizeof(uint16_t));
1085                 order[0] = slot;
1086         } else
1087                 order[n] = slot;
1088
1089         return efi_set_boot_order(order, n + 1);
1090 }
1091
1092 static int remove_from_order(uint16_t slot) {
1093         _cleanup_free_ uint16_t *order = NULL;
1094         int n;
1095
1096         n = efi_get_boot_order(&order);
1097         if (n <= 0)
1098                 return n;
1099
1100         for (int i = 0; i < n; i++) {
1101                 if (order[i] != slot)
1102                         continue;
1103
1104                 if (i + 1 < n)
1105                         memmove(order + i, order + i+1, (n - i) * sizeof(uint16_t));
1106                 return efi_set_boot_order(order, n - 1);
1107         }
1108
1109         return 0;
1110 }
1111
1112 static int install_variables(const char *esp_path,
1113                              uint32_t part, uint64_t pstart, uint64_t psize,
1114                              sd_id128_t uuid, const char *path,
1115                              bool first) {
1116         const char *p;
1117         uint16_t slot;
1118         int r;
1119
1120         if (!is_efi_boot()) {
1121                 log_warning("Not booted with EFI, skipping EFI variable setup.");
1122                 return 0;
1123         }
1124
1125         p = prefix_roota(esp_path, path);
1126         if (access(p, F_OK) < 0) {
1127                 if (errno == ENOENT)
1128                         return 0;
1129
1130                 return log_error_errno(errno, "Cannot access \"%s\": %m", p);
1131         }
1132
1133         r = find_slot(uuid, path, &slot);
1134         if (r < 0)
1135                 return log_error_errno(r,
1136                                        r == -ENOENT ?
1137                                        "Failed to access EFI variables. Is the \"efivarfs\" filesystem mounted?" :
1138                                        "Failed to determine current boot order: %m");
1139
1140         if (first || r == 0) {
1141                 r = efi_add_boot_option(slot, "Linux Boot Manager",
1142                                         part, pstart, psize,
1143                                         uuid, path);
1144                 if (r < 0)
1145                         return log_error_errno(r, "Failed to create EFI Boot variable entry: %m");
1146
1147                 log_info("Created EFI boot entry \"Linux Boot Manager\".");
1148         }
1149
1150         return insert_into_order(slot, first);
1151 }
1152
1153 static int remove_boot_efi(const char *esp_path) {
1154         _cleanup_closedir_ DIR *d = NULL;
1155         const char *p;
1156         int r, c = 0;
1157
1158         p = prefix_roota(esp_path, "/EFI/BOOT");
1159         d = opendir(p);
1160         if (!d) {
1161                 if (errno == ENOENT)
1162                         return 0;
1163
1164                 return log_error_errno(errno, "Failed to open directory \"%s\": %m", p);
1165         }
1166
1167         FOREACH_DIRENT(de, d, break) {
1168                 _cleanup_close_ int fd = -1;
1169                 _cleanup_free_ char *v = NULL;
1170
1171                 if (!endswith_no_case(de->d_name, ".efi"))
1172                         continue;
1173
1174                 if (!startswith_no_case(de->d_name, "boot"))
1175                         continue;
1176
1177                 fd = openat(dirfd(d), de->d_name, O_RDONLY|O_CLOEXEC);
1178                 if (fd < 0)
1179                         return log_error_errno(errno, "Failed to open \"%s/%s\" for reading: %m", p, de->d_name);
1180
1181                 r = get_file_version(fd, &v);
1182                 if (r < 0)
1183                         return r;
1184                 if (r > 0 && startswith(v, "systemd-boot ")) {
1185                         r = unlinkat(dirfd(d), de->d_name, 0);
1186                         if (r < 0)
1187                                 return log_error_errno(errno, "Failed to remove \"%s/%s\": %m", p, de->d_name);
1188
1189                         log_info("Removed \"%s/%s\".", p, de->d_name);
1190                 }
1191
1192                 c++;
1193         }
1194
1195         return c;
1196 }
1197
1198 static int rmdir_one(const char *prefix, const char *suffix) {
1199         const char *p;
1200
1201         p = prefix_roota(prefix, suffix);
1202         if (rmdir(p) < 0) {
1203                 bool ignore = IN_SET(errno, ENOENT, ENOTEMPTY);
1204
1205                 log_full_errno(ignore ? LOG_DEBUG : LOG_ERR, errno,
1206                                "Failed to remove directory \"%s\": %m", p);
1207                 if (!ignore)
1208                         return -errno;
1209         } else
1210                 log_info("Removed \"%s\".", p);
1211
1212         return 0;
1213 }
1214
1215 static int remove_subdirs(const char *root, const char *const *subdirs) {
1216         int r, q;
1217
1218         /* We use recursion here to destroy the directories in reverse order. Which should be safe given how
1219          * short the array is. */
1220
1221         if (!subdirs[0]) /* A the end of the list */
1222                 return 0;
1223
1224         r = remove_subdirs(root, subdirs + 1);
1225         q = rmdir_one(root, subdirs[0]);
1226
1227         return r < 0 ? r : q;
1228 }
1229
1230 static int remove_entry_directory(const char *root) {
1231         assert(root);
1232         assert(arg_make_entry_directory >= 0);
1233
1234         if (!arg_make_entry_directory || !arg_entry_token)
1235                 return 0;
1236
1237         return rmdir_one(root, arg_entry_token);
1238 }
1239
1240 static int remove_binaries(const char *esp_path) {
1241         const char *p;
1242         int r, q;
1243
1244         p = prefix_roota(esp_path, "/EFI/systemd");
1245         r = rm_rf(p, REMOVE_ROOT|REMOVE_PHYSICAL);
1246
1247         q = remove_boot_efi(esp_path);
1248         if (q < 0 && r == 0)
1249                 r = q;
1250
1251         return r;
1252 }
1253
1254 static int remove_file(const char *root, const char *file) {
1255         const char *p;
1256
1257         assert(root);
1258         assert(file);
1259
1260         p = prefix_roota(root, file);
1261         if (unlink(p) < 0) {
1262                 log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_ERR, errno,
1263                                "Failed to unlink file \"%s\": %m", p);
1264
1265                 return errno == ENOENT ? 0 : -errno;
1266         }
1267
1268         log_info("Removed \"%s\".", p);
1269         return 1;
1270 }
1271
1272 static int remove_variables(sd_id128_t uuid, const char *path, bool in_order) {
1273         uint16_t slot;
1274         int r;
1275
1276         if (!is_efi_boot())
1277                 return 0;
1278
1279         r = find_slot(uuid, path, &slot);
1280         if (r != 1)
1281                 return 0;
1282
1283         r = efi_remove_boot_option(slot);
1284         if (r < 0)
1285                 return r;
1286
1287         if (in_order)
1288                 return remove_from_order(slot);
1289
1290         return 0;
1291 }
1292
1293 static int remove_loader_variables(void) {
1294         int r = 0;
1295
1296         /* Remove all persistent loader variables we define */
1297
1298         FOREACH_STRING(var,
1299                        EFI_LOADER_VARIABLE(LoaderConfigTimeout),
1300                        EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot),
1301                        EFI_LOADER_VARIABLE(LoaderEntryDefault),
1302                        EFI_LOADER_VARIABLE(LoaderEntryOneShot),
1303                        EFI_LOADER_VARIABLE(LoaderSystemToken)){
1304
1305                 int q;
1306
1307                 q = efi_set_variable(var, NULL, 0);
1308                 if (q == -ENOENT)
1309                         continue;
1310                 if (q < 0) {
1311                         log_warning_errno(q, "Failed to remove EFI variable %s: %m", var);
1312                         if (r >= 0)
1313                                 r = q;
1314                 } else
1315                         log_info("Removed EFI variable %s.", var);
1316         }
1317
1318         return r;
1319 }
1320
1321 static int install_loader_config(const char *esp_path) {
1322         _cleanup_(unlink_and_freep) char *t = NULL;
1323         _cleanup_fclose_ FILE *f = NULL;
1324         const char *p;
1325         int r;
1326
1327         assert(arg_make_entry_directory >= 0);
1328
1329         p = prefix_roota(esp_path, "/loader/loader.conf");
1330         if (access(p, F_OK) >= 0) /* Silently skip creation if the file already exists (early check) */
1331                 return 0;
1332
1333         r = fopen_tmpfile_linkable(p, O_WRONLY|O_CLOEXEC, &t, &f);
1334         if (r < 0)
1335                 return log_error_errno(r, "Failed to open \"%s\" for writing: %m", p);
1336
1337         fprintf(f, "#timeout 3\n"
1338                    "#console-mode keep\n");
1339
1340         if (arg_make_entry_directory) {
1341                 assert(arg_entry_token);
1342                 fprintf(f, "default %s-*\n", arg_entry_token);
1343         }
1344
1345         r = flink_tmpfile(f, t, p);
1346         if (r == -EEXIST)
1347                 return 0; /* Silently skip creation if the file exists now (recheck) */
1348         if (r < 0)
1349                 return log_error_errno(r, "Failed to move \"%s\" into place: %m", p);
1350
1351         t = mfree(t);
1352         return 1;
1353 }
1354
1355 static int install_loader_specification(const char *root) {
1356         _cleanup_(unlink_and_freep) char *t = NULL;
1357         _cleanup_fclose_ FILE *f = NULL;
1358         _cleanup_free_ char *p = NULL;
1359         int r;
1360
1361         p = path_join(root, "/loader/entries.srel");
1362         if (!p)
1363                 return log_oom();
1364
1365         if (access(p, F_OK) >= 0) /* Silently skip creation if the file already exists (early check) */
1366                 return 0;
1367
1368         r = fopen_tmpfile_linkable(p, O_WRONLY|O_CLOEXEC, &t, &f);
1369         if (r < 0)
1370                 return log_error_errno(r, "Failed to open \"%s\" for writing: %m", p);
1371
1372         fprintf(f, "type1\n");
1373
1374         r = flink_tmpfile(f, t, p);
1375         if (r == -EEXIST)
1376                 return 0; /* Silently skip creation if the file exists now (recheck) */
1377         if (r < 0)
1378                 return log_error_errno(r, "Failed to move \"%s\" into place: %m", p);
1379
1380         t = mfree(t);
1381         return 1;
1382 }
1383
1384 static int install_entry_directory(const char *root) {
1385         assert(root);
1386         assert(arg_make_entry_directory >= 0);
1387
1388         if (!arg_make_entry_directory)
1389                 return 0;
1390
1391         assert(arg_entry_token);
1392         return mkdir_one(root, arg_entry_token);
1393 }
1394
1395 static int install_entry_token(void) {
1396         int r;
1397
1398         assert(arg_make_entry_directory >= 0);
1399         assert(arg_entry_token);
1400
1401         /* Let's save the used entry token in /etc/kernel/entry-token if we used it to create the entry
1402          * directory, or if anything else but the machine ID */
1403
1404         if (!arg_make_entry_directory && arg_entry_token_type == ARG_ENTRY_TOKEN_MACHINE_ID)
1405                 return 0;
1406
1407         r = write_string_file("/etc/kernel/entry-token", arg_entry_token, WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_ATOMIC|WRITE_STRING_FILE_MKDIR_0755);
1408         if (r < 0)
1409                 return log_error_errno(r, "Failed to write entry token '%s' to /etc/kernel/entry-token", arg_entry_token);
1410
1411         return 0;
1412 }
1413
1414 static int help(int argc, char *argv[], void *userdata) {
1415         _cleanup_free_ char *link = NULL;
1416         int r;
1417
1418         r = terminal_urlify_man("bootctl", "1", &link);
1419         if (r < 0)
1420                 return log_oom();
1421
1422         printf("%1$s  [OPTIONS...] COMMAND ...\n"
1423                "\n%5$sControl EFI firmware boot settings and manage boot loader.%6$s\n"
1424                "\n%3$sGeneric EFI Firmware/Boot Loader Commands:%4$s\n"
1425                "  status              Show status of installed boot loader and EFI variables\n"
1426                "  reboot-to-firmware [BOOL]\n"
1427                "                      Query or set reboot-to-firmware EFI flag\n"
1428                "  systemd-efi-options [STRING]\n"
1429                "                      Query or set system options string in EFI variable\n"
1430                "\n%3$sBoot Loader Specification Commands:%4$s\n"
1431                "  list                List boot loader entries\n"
1432                "  set-default ID      Set default boot loader entry\n"
1433                "  set-oneshot ID      Set default boot loader entry, for next boot only\n"
1434                "  set-timeout SECONDS Set the menu timeout\n"
1435                "  set-timeout-oneshot SECONDS\n"
1436                "                      Set the menu timeout for the next boot only\n"
1437                "\n%3$ssystemd-boot Commands:%4$s\n"
1438                "  install             Install systemd-boot to the ESP and EFI variables\n"
1439                "  update              Update systemd-boot in the ESP and EFI variables\n"
1440                "  remove              Remove systemd-boot from the ESP and EFI variables\n"
1441                "  is-installed        Test whether systemd-boot is installed in the ESP\n"
1442                "  random-seed         Initialize random seed in ESP and EFI variables\n"
1443                "\n%3$sOptions:%4$s\n"
1444                "  -h --help            Show this help\n"
1445                "     --version         Print version\n"
1446                "     --esp-path=PATH   Path to the EFI System Partition (ESP)\n"
1447                "     --boot-path=PATH  Path to the $BOOT partition\n"
1448                "  -p --print-esp-path  Print path to the EFI System Partition\n"
1449                "  -x --print-boot-path Print path to the $BOOT partition\n"
1450                "     --no-variables    Don't touch EFI variables\n"
1451                "     --no-pager        Do not pipe output into a pager\n"
1452                "     --graceful        Don't fail when the ESP cannot be found or EFI\n"
1453                "                       variables cannot be written\n"
1454                "  -q --quiet           Suppress output\n"
1455                "     --make-entry-directory=yes|no|auto\n"
1456                "                       Create $BOOT/ENTRY-TOKEN/ directory\n"
1457                "     --entry-token=machine-id|os-id|os-image-id|auto|literal:…\n"
1458                "                       Entry token to use for this installation\n"
1459                "     --json=pretty|short|off\n"
1460                "                       Generate JSON output\n"
1461                "\nSee the %2$s for details.\n",
1462                program_invocation_short_name,
1463                link,
1464                ansi_underline(),
1465                ansi_normal(),
1466                ansi_highlight(),
1467                ansi_normal());
1468
1469         return 0;
1470 }
1471
1472 static int parse_argv(int argc, char *argv[]) {
1473         enum {
1474                 ARG_ESP_PATH = 0x100,
1475                 ARG_BOOT_PATH,
1476                 ARG_VERSION,
1477                 ARG_NO_VARIABLES,
1478                 ARG_NO_PAGER,
1479                 ARG_GRACEFUL,
1480                 ARG_MAKE_ENTRY_DIRECTORY,
1481                 ARG_ENTRY_TOKEN,
1482                 ARG_JSON,
1483         };
1484
1485         static const struct option options[] = {
1486                 { "help",                      no_argument,       NULL, 'h'                           },
1487                 { "version",                   no_argument,       NULL, ARG_VERSION                   },
1488                 { "esp-path",                  required_argument, NULL, ARG_ESP_PATH                  },
1489                 { "path",                      required_argument, NULL, ARG_ESP_PATH                  }, /* Compatibility alias */
1490                 { "boot-path",                 required_argument, NULL, ARG_BOOT_PATH                 },
1491                 { "print-esp-path",            no_argument,       NULL, 'p'                           },
1492                 { "print-path",                no_argument,       NULL, 'p'                           }, /* Compatibility alias */
1493                 { "print-boot-path",           no_argument,       NULL, 'x'                           },
1494                 { "no-variables",              no_argument,       NULL, ARG_NO_VARIABLES              },
1495                 { "no-pager",                  no_argument,       NULL, ARG_NO_PAGER                  },
1496                 { "graceful",                  no_argument,       NULL, ARG_GRACEFUL                  },
1497                 { "quiet",                     no_argument,       NULL, 'q'                           },
1498                 { "make-entry-directory",      required_argument, NULL, ARG_MAKE_ENTRY_DIRECTORY      },
1499                 { "make-machine-id-directory", required_argument, NULL, ARG_MAKE_ENTRY_DIRECTORY      }, /* Compatibility alias */
1500                 { "entry-token",               required_argument, NULL, ARG_ENTRY_TOKEN               },
1501                 { "json",                      required_argument, NULL, ARG_JSON                      },
1502                 {}
1503         };
1504
1505         int c, r;
1506         bool b;
1507
1508         assert(argc >= 0);
1509         assert(argv);
1510
1511         while ((c = getopt_long(argc, argv, "hpx", options, NULL)) >= 0)
1512                 switch (c) {
1513
1514                 case 'h':
1515                         help(0, NULL, NULL);
1516                         return 0;
1517
1518                 case ARG_VERSION:
1519                         return version();
1520
1521                 case ARG_ESP_PATH:
1522                         r = free_and_strdup(&arg_esp_path, optarg);
1523                         if (r < 0)
1524                                 return log_oom();
1525                         break;
1526
1527                 case ARG_BOOT_PATH:
1528                         r = free_and_strdup(&arg_xbootldr_path, optarg);
1529                         if (r < 0)
1530                                 return log_oom();
1531                         break;
1532
1533                 case 'p':
1534                         if (arg_print_dollar_boot_path)
1535                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1536                                                        "--print-boot-path/-x cannot be combined with --print-esp-path/-p");
1537                         arg_print_esp_path = true;
1538                         break;
1539
1540                 case 'x':
1541                         if (arg_print_esp_path)
1542                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1543                                                        "--print-boot-path/-x cannot be combined with --print-esp-path/-p");
1544                         arg_print_dollar_boot_path = true;
1545                         break;
1546
1547                 case ARG_NO_VARIABLES:
1548                         arg_touch_variables = false;
1549                         break;
1550
1551                 case ARG_NO_PAGER:
1552                         arg_pager_flags |= PAGER_DISABLE;
1553                         break;
1554
1555                 case ARG_GRACEFUL:
1556                         arg_graceful = true;
1557                         break;
1558
1559                 case 'q':
1560                         arg_quiet = true;
1561                         break;
1562
1563                 case ARG_ENTRY_TOKEN: {
1564                         const char *e;
1565
1566                         if (streq(optarg, "machine-id")) {
1567                                 arg_entry_token_type = ARG_ENTRY_TOKEN_MACHINE_ID;
1568                                 arg_entry_token = mfree(arg_entry_token);
1569                         } else if (streq(optarg, "os-image-id")) {
1570                                 arg_entry_token_type = ARG_ENTRY_TOKEN_OS_IMAGE_ID;
1571                                 arg_entry_token = mfree(arg_entry_token);
1572                         } else if (streq(optarg, "os-id")) {
1573                                 arg_entry_token_type = ARG_ENTRY_TOKEN_OS_ID;
1574                                 arg_entry_token = mfree(arg_entry_token);
1575                         } else if ((e = startswith(optarg, "literal:"))) {
1576                                 arg_entry_token_type = ARG_ENTRY_TOKEN_LITERAL;
1577
1578                                 r = free_and_strdup_warn(&arg_entry_token, e);
1579                                 if (r < 0)
1580                                         return r;
1581                         } else
1582                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1583                                                        "Unexpected parameter for --entry-token=: %s", optarg);
1584
1585                         break;
1586                 }
1587
1588                 case ARG_MAKE_ENTRY_DIRECTORY:
1589                         if (streq(optarg, "auto"))  /* retained for backwards compatibility */
1590                                 arg_make_entry_directory = -1; /* yes if machine-id is permanent */
1591                         else {
1592                                 r = parse_boolean_argument("--make-entry-directory=", optarg, &b);
1593                                 if (r < 0)
1594                                         return r;
1595
1596                                 arg_make_entry_directory = b;
1597                         }
1598                         break;
1599
1600                 case ARG_JSON:
1601                         r = parse_json_argument(optarg, &arg_json_format_flags);
1602                         if (r <= 0)
1603                                 return r;
1604
1605                         break;
1606
1607                 case '?':
1608                         return -EINVAL;
1609
1610                 default:
1611                         assert_not_reached();
1612                 }
1613
1614         return 1;
1615 }
1616
1617 static void read_efi_var(const char *variable, char **ret) {
1618         int r;
1619
1620         r = efi_get_variable_string(variable, ret);
1621         if (r < 0 && r != -ENOENT)
1622                 log_warning_errno(r, "Failed to read EFI variable %s: %m", variable);
1623 }
1624
1625 static void print_yes_no_line(bool first, bool good, const char *name) {
1626         printf("%s%s %s\n",
1627                first ? "     Features: " : "               ",
1628                COLOR_MARK_BOOL(good),
1629                name);
1630 }
1631
1632 static int are_we_installed(const char *esp_path) {
1633         int r;
1634
1635         /* Tests whether systemd-boot is installed. It's not obvious what to use as check here: we could
1636          * check EFI variables, we could check what binary /EFI/BOOT/BOOT*.EFI points to, or whether the
1637          * loader entries directory exists. Here we opted to check whether /EFI/systemd/ is non-empty, which
1638          * should be a suitable and very minimal check for a number of reasons:
1639          *
1640          *  → The check is architecture independent (i.e. we check if any systemd-boot loader is installed,
1641          *    not a specific one.)
1642          *
1643          *  → It doesn't assume we are the only boot loader (i.e doesn't check if we own the main
1644          *    /EFI/BOOT/BOOT*.EFI fallback binary.
1645          *
1646          *  → It specifically checks for systemd-boot, not for other boot loaders (which a check for
1647          *    /boot/loader/entries would do). */
1648
1649         _cleanup_free_ char *p = path_join(esp_path, "/EFI/systemd/");
1650         if (!p)
1651                 return log_oom();
1652
1653         log_debug("Checking whether %s contains any files…", p);
1654         r = dir_is_empty(p, /* ignore_hidden_or_backup= */ false);
1655         if (r < 0 && r != -ENOENT)
1656                 return log_error_errno(r, "Failed to check whether %s contains any files: %m", p);
1657
1658         return r == 0;
1659 }
1660
1661 static int verb_status(int argc, char *argv[], void *userdata) {
1662         sd_id128_t esp_uuid = SD_ID128_NULL, xbootldr_uuid = SD_ID128_NULL;
1663         dev_t esp_devid = 0, xbootldr_devid = 0;
1664         int r, k;
1665
1666         r = acquire_esp(/* unprivileged_mode= */ geteuid() != 0, /* graceful= */ false, NULL, NULL, NULL, &esp_uuid, &esp_devid);
1667         if (arg_print_esp_path) {
1668                 if (r == -EACCES) /* If we couldn't acquire the ESP path, log about access errors (which is the only
1669                                    * error the find_esp_and_warn() won't log on its own) */
1670                         return log_error_errno(r, "Failed to determine ESP location: %m");
1671                 if (r < 0)
1672                         return r;
1673
1674                 puts(arg_esp_path);
1675         }
1676
1677         r = acquire_xbootldr(/* unprivileged_mode= */ geteuid() != 0, &xbootldr_uuid, &xbootldr_devid);
1678         if (arg_print_dollar_boot_path) {
1679                 if (r == -EACCES)
1680                         return log_error_errno(r, "Failed to determine XBOOTLDR partition: %m");
1681                 if (r < 0)
1682                         return r;
1683
1684                 const char *path = arg_dollar_boot_path();
1685                 if (!path)
1686                         return log_error_errno(SYNTHETIC_ERRNO(EACCES), "Failed to determine XBOOTLDR location: %m");
1687
1688                 puts(path);
1689         }
1690
1691         if (arg_print_esp_path || arg_print_dollar_boot_path)
1692                 return 0;
1693
1694         r = 0; /* If we couldn't determine the path, then don't consider that a problem from here on, just
1695                 * show what we can show */
1696
1697         pager_open(arg_pager_flags);
1698
1699         if (is_efi_boot()) {
1700                 static const struct {
1701                         uint64_t flag;
1702                         const char *name;
1703                 } flags[] = {
1704                         { EFI_LOADER_FEATURE_BOOT_COUNTING,           "Boot counting"                         },
1705                         { EFI_LOADER_FEATURE_CONFIG_TIMEOUT,          "Menu timeout control"                  },
1706                         { EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT, "One-shot menu timeout control"         },
1707                         { EFI_LOADER_FEATURE_ENTRY_DEFAULT,           "Default entry control"                 },
1708                         { EFI_LOADER_FEATURE_ENTRY_ONESHOT,           "One-shot entry control"                },
1709                         { EFI_LOADER_FEATURE_XBOOTLDR,                "Support for XBOOTLDR partition"        },
1710                         { EFI_LOADER_FEATURE_RANDOM_SEED,             "Support for passing random seed to OS" },
1711                         { EFI_LOADER_FEATURE_LOAD_DRIVER,             "Load drop-in drivers"                  },
1712                 };
1713                 _cleanup_free_ char *fw_type = NULL, *fw_info = NULL, *loader = NULL, *loader_path = NULL, *stub = NULL;
1714                 sd_id128_t loader_part_uuid = SD_ID128_NULL;
1715                 uint64_t loader_features = 0;
1716                 Tpm2Support s;
1717                 int have;
1718
1719                 read_efi_var(EFI_LOADER_VARIABLE(LoaderFirmwareType), &fw_type);
1720                 read_efi_var(EFI_LOADER_VARIABLE(LoaderFirmwareInfo), &fw_info);
1721                 read_efi_var(EFI_LOADER_VARIABLE(LoaderInfo), &loader);
1722                 read_efi_var(EFI_LOADER_VARIABLE(StubInfo), &stub);
1723                 read_efi_var(EFI_LOADER_VARIABLE(LoaderImageIdentifier), &loader_path);
1724                 (void) efi_loader_get_features(&loader_features);
1725
1726                 if (loader_path)
1727                         efi_tilt_backslashes(loader_path);
1728
1729                 k = efi_loader_get_device_part_uuid(&loader_part_uuid);
1730                 if (k < 0 && k != -ENOENT)
1731                         r = log_warning_errno(k, "Failed to read EFI variable LoaderDevicePartUUID: %m");
1732
1733                 SecureBootMode secure = efi_get_secure_boot_mode();
1734                 printf("System:\n");
1735                 printf("     Firmware: %s%s (%s)%s\n", ansi_highlight(), strna(fw_type), strna(fw_info), ansi_normal());
1736                 printf("  Secure Boot: %sd (%s)\n",
1737                        enable_disable(IN_SET(secure, SECURE_BOOT_USER, SECURE_BOOT_DEPLOYED)),
1738                        secure_boot_mode_to_string(secure));
1739
1740                 s = tpm2_support();
1741                 printf(" TPM2 Support: %s%s%s\n",
1742                        FLAGS_SET(s, TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER) ? ansi_highlight_green() :
1743                        (s & (TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER)) != 0 ? ansi_highlight_red() : ansi_highlight_yellow(),
1744                        FLAGS_SET(s, TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER) ? "yes" :
1745                        (s & TPM2_SUPPORT_FIRMWARE) ? "firmware only, driver unavailable" :
1746                        (s & TPM2_SUPPORT_DRIVER) ? "driver only, firmware unavailable" : "no",
1747                        ansi_normal());
1748
1749                 k = efi_get_reboot_to_firmware();
1750                 if (k > 0)
1751                         printf(" Boot into FW: %sactive%s\n", ansi_highlight_yellow(), ansi_normal());
1752                 else if (k == 0)
1753                         printf(" Boot into FW: supported\n");
1754                 else if (k == -EOPNOTSUPP)
1755                         printf(" Boot into FW: not supported\n");
1756                 else {
1757                         errno = -k;
1758                         printf(" Boot into FW: %sfailed%s (%m)\n", ansi_highlight_red(), ansi_normal());
1759                 }
1760                 printf("\n");
1761
1762                 printf("Current Boot Loader:\n");
1763                 printf("      Product: %s%s%s\n", ansi_highlight(), strna(loader), ansi_normal());
1764
1765                 for (size_t i = 0; i < ELEMENTSOF(flags); i++)
1766                         print_yes_no_line(i == 0, FLAGS_SET(loader_features, flags[i].flag), flags[i].name);
1767
1768                 sd_id128_t bootloader_esp_uuid;
1769                 bool have_bootloader_esp_uuid = efi_loader_get_device_part_uuid(&bootloader_esp_uuid) >= 0;
1770
1771                 print_yes_no_line(false, have_bootloader_esp_uuid, "Boot loader sets ESP information");
1772                 if (have_bootloader_esp_uuid && !sd_id128_equal(esp_uuid, bootloader_esp_uuid))
1773                         printf("WARNING: The boot loader reports a different ESP UUID than detected!\n");
1774
1775                 if (stub)
1776                         printf("         Stub: %s\n", stub);
1777                 if (!sd_id128_is_null(loader_part_uuid))
1778                         printf("          ESP: /dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR "\n",
1779                                SD_ID128_FORMAT_VAL(loader_part_uuid));
1780                 else
1781                         printf("          ESP: n/a\n");
1782                 printf("         File: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), strna(loader_path));
1783                 printf("\n");
1784
1785                 printf("Random Seed:\n");
1786                 have = access(EFIVAR_PATH(EFI_LOADER_VARIABLE(LoaderRandomSeed)), F_OK) >= 0;
1787                 printf(" Passed to OS: %s\n", yes_no(have));
1788                 have = access(EFIVAR_PATH(EFI_LOADER_VARIABLE(LoaderSystemToken)), F_OK) >= 0;
1789                 printf(" System Token: %s\n", have ? "set" : "not set");
1790
1791                 if (arg_esp_path) {
1792                         _cleanup_free_ char *p = NULL;
1793
1794                         p = path_join(arg_esp_path, "/loader/random-seed");
1795                         if (!p)
1796                                 return log_oom();
1797
1798                         have = access(p, F_OK) >= 0;
1799                         printf("       Exists: %s\n", yes_no(have));
1800                 }
1801
1802                 printf("\n");
1803         } else
1804                 printf("System:\n    Not booted with EFI\n\n");
1805
1806         if (arg_esp_path) {
1807                 k = status_binaries(arg_esp_path, esp_uuid);
1808                 if (k < 0)
1809                         r = k;
1810         }
1811
1812         if (is_efi_boot()) {
1813                 k = status_variables();
1814                 if (k < 0)
1815                         r = k;
1816         }
1817
1818         if (arg_esp_path || arg_xbootldr_path) {
1819                 _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
1820
1821                 k = boot_config_load_and_select(&config,
1822                                                 arg_esp_path, esp_devid,
1823                                                 arg_xbootldr_path, xbootldr_devid);
1824                 if (k < 0)
1825                         r = k;
1826                 else {
1827                         k = status_entries(&config,
1828                                            arg_esp_path, esp_uuid,
1829                                            arg_xbootldr_path, xbootldr_uuid);
1830                         if (k < 0)
1831                                 r = k;
1832                 }
1833         }
1834
1835         return r;
1836 }
1837
1838 static int verb_list(int argc, char *argv[], void *userdata) {
1839         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
1840         dev_t esp_devid = 0, xbootldr_devid = 0;
1841         int r;
1842
1843         /* If we lack privileges we invoke find_esp_and_warn() in "unprivileged mode" here, which does two
1844          * things: turn off logging about access errors and turn off potentially privileged device probing.
1845          * Here we're interested in the latter but not the former, hence request the mode, and log about
1846          * EACCES. */
1847
1848         r = acquire_esp(/* unprivileged_mode= */ geteuid() != 0, /* graceful= */ false, NULL, NULL, NULL, NULL, &esp_devid);
1849         if (r == -EACCES) /* We really need the ESP path for this call, hence also log about access errors */
1850                 return log_error_errno(r, "Failed to determine ESP location: %m");
1851         if (r < 0)
1852                 return r;
1853
1854         r = acquire_xbootldr(/* unprivileged_mode= */ geteuid() != 0, NULL, &xbootldr_devid);
1855         if (r == -EACCES)
1856                 return log_error_errno(r, "Failed to determine XBOOTLDR partition: %m");
1857         if (r < 0)
1858                 return r;
1859
1860         r = boot_config_load_and_select(&config, arg_esp_path, esp_devid, arg_xbootldr_path, xbootldr_devid);
1861         if (r < 0)
1862                 return r;
1863
1864         if (!FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) {
1865
1866                 pager_open(arg_pager_flags);
1867
1868                 for (size_t i = 0; i < config.n_entries; i++) {
1869                         _cleanup_free_ char *opts = NULL;
1870                         BootEntry *e = config.entries + i;
1871                         _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
1872
1873                         if (!strv_isempty(e->options)) {
1874                                 opts = strv_join(e->options, " ");
1875                                 if (!opts)
1876                                         return log_oom();
1877                         }
1878
1879                         r = json_build(&v, JSON_BUILD_OBJECT(
1880                                                        JSON_BUILD_PAIR_CONDITION(e->id, "id", JSON_BUILD_STRING(e->id)),
1881                                                        JSON_BUILD_PAIR_CONDITION(e->path, "path", JSON_BUILD_STRING(e->path)),
1882                                                        JSON_BUILD_PAIR_CONDITION(e->root, "root", JSON_BUILD_STRING(e->root)),
1883                                                        JSON_BUILD_PAIR_CONDITION(e->title, "title", JSON_BUILD_STRING(e->title)),
1884                                                        JSON_BUILD_PAIR_CONDITION(boot_entry_title(e), "showTitle", JSON_BUILD_STRING(boot_entry_title(e))),
1885                                                        JSON_BUILD_PAIR_CONDITION(e->sort_key, "sortKey", JSON_BUILD_STRING(e->sort_key)),
1886                                                        JSON_BUILD_PAIR_CONDITION(e->version, "version", JSON_BUILD_STRING(e->version)),
1887                                                        JSON_BUILD_PAIR_CONDITION(e->machine_id, "machineId", JSON_BUILD_STRING(e->machine_id)),
1888                                                        JSON_BUILD_PAIR_CONDITION(e->architecture, "architecture", JSON_BUILD_STRING(e->architecture)),
1889                                                        JSON_BUILD_PAIR_CONDITION(opts, "options", JSON_BUILD_STRING(opts)),
1890                                                        JSON_BUILD_PAIR_CONDITION(e->kernel, "linux", JSON_BUILD_STRING(e->kernel)),
1891                                                        JSON_BUILD_PAIR_CONDITION(e->efi, "efi", JSON_BUILD_STRING(e->efi)),
1892                                                        JSON_BUILD_PAIR_CONDITION(!strv_isempty(e->initrd), "initrd", JSON_BUILD_STRV(e->initrd)),
1893                                                        JSON_BUILD_PAIR_CONDITION(e->device_tree, "devicetree", JSON_BUILD_STRING(e->device_tree)),
1894                                                        JSON_BUILD_PAIR_CONDITION(!strv_isempty(e->device_tree_overlay), "devicetreeOverlay", JSON_BUILD_STRV(e->device_tree_overlay))));
1895                         if (r < 0)
1896                                 return log_oom();
1897
1898                         json_variant_dump(v, arg_json_format_flags, stdout, NULL);
1899                 }
1900
1901         } else if (config.n_entries == 0)
1902                 log_info("No boot loader entries found.");
1903         else {
1904                 pager_open(arg_pager_flags);
1905
1906                 printf("Boot Loader Entries:\n");
1907
1908                 for (size_t n = 0; n < config.n_entries; n++) {
1909                         r = boot_entry_show(
1910                                         config.entries + n,
1911                                         /* show_as_default= */  n == (size_t) config.default_entry,
1912                                         /* show_as_selected= */ n == (size_t) config.selected_entry,
1913                                         /* show_discovered= */  true);
1914                         if (r < 0)
1915                                 return r;
1916
1917                         if (n+1 < config.n_entries)
1918                                 putchar('\n');
1919                 }
1920         }
1921
1922         return 0;
1923 }
1924
1925 static int install_random_seed(const char *esp) {
1926         _cleanup_(unlink_and_freep) char *tmp = NULL;
1927         _cleanup_free_ void *buffer = NULL;
1928         _cleanup_free_ char *path = NULL;
1929         _cleanup_close_ int fd = -1;
1930         size_t sz, token_size;
1931         ssize_t n;
1932         int r;
1933
1934         assert(esp);
1935
1936         path = path_join(esp, "/loader/random-seed");
1937         if (!path)
1938                 return log_oom();
1939
1940         sz = random_pool_size();
1941
1942         buffer = malloc(sz);
1943         if (!buffer)
1944                 return log_oom();
1945
1946         r = genuine_random_bytes(buffer, sz, RANDOM_BLOCK);
1947         if (r < 0)
1948                 return log_error_errno(r, "Failed to acquire random seed: %m");
1949
1950         /* Normally create_subdirs() should already have created everything we need, but in case "bootctl
1951          * random-seed" is called we want to just create the minimum we need for it, and not the full
1952          * list. */
1953         r = mkdir_parents(path, 0755);
1954         if (r < 0)
1955                 return log_error_errno(r, "Failed to create parent directory for %s: %m", path);
1956
1957         r = tempfn_random(path, "bootctl", &tmp);
1958         if (r < 0)
1959                 return log_oom();
1960
1961         fd = open(tmp, O_CREAT|O_EXCL|O_NOFOLLOW|O_NOCTTY|O_WRONLY|O_CLOEXEC, 0600);
1962         if (fd < 0) {
1963                 tmp = mfree(tmp);
1964                 return log_error_errno(fd, "Failed to open random seed file for writing: %m");
1965         }
1966
1967         n = write(fd, buffer, sz);
1968         if (n < 0)
1969                 return log_error_errno(errno, "Failed to write random seed file: %m");
1970         if ((size_t) n != sz)
1971                 return log_error_errno(SYNTHETIC_ERRNO(EIO), "Short write while writing random seed file.");
1972
1973         if (rename(tmp, path) < 0)
1974                 return log_error_errno(r, "Failed to move random seed file into place: %m");
1975
1976         tmp = mfree(tmp);
1977
1978         log_info("Random seed file %s successfully written (%zu bytes).", path, sz);
1979
1980         if (!arg_touch_variables)
1981                 return 0;
1982
1983         if (!is_efi_boot()) {
1984                 log_notice("Not booted with EFI, skipping EFI variable setup.");
1985                 return 0;
1986         }
1987
1988         r = getenv_bool("SYSTEMD_WRITE_SYSTEM_TOKEN");
1989         if (r < 0) {
1990                 if (r != -ENXIO)
1991                          log_warning_errno(r, "Failed to parse $SYSTEMD_WRITE_SYSTEM_TOKEN, ignoring.");
1992
1993                 if (detect_vm() > 0) {
1994                         /* Let's not write a system token if we detect we are running in a VM
1995                          * environment. Why? Our default security model for the random seed uses the system
1996                          * token as a mechanism to ensure we are not vulnerable to golden master sloppiness
1997                          * issues, i.e. that people initialize the random seed file, then copy the image to
1998                          * many systems and end up with the same random seed in each that is assumed to be
1999                          * valid but in reality is the same for all machines. By storing a system token in
2000                          * the EFI variable space we can make sure that even though the random seeds on disk
2001                          * are all the same they will be different on each system under the assumption that
2002                          * the EFI variable space is maintained separate from the random seed storage. That
2003                          * is generally the case on physical systems, as the ESP is stored on persistent
2004                          * storage, and the EFI variables in NVRAM. However in virtualized environments this
2005                          * is generally not true: the EFI variable set is typically stored along with the
2006                          * disk image itself. For example, using the OVMF EFI firmware the EFI variables are
2007                          * stored in a file in the ESP itself. */
2008
2009                         log_notice("Not installing system token, since we are running in a virtualized environment.");
2010                         return 0;
2011                 }
2012         } else if (r == 0) {
2013                 log_notice("Not writing system token, because $SYSTEMD_WRITE_SYSTEM_TOKEN is set to false.");
2014                 return 0;
2015         }
2016
2017         r = efi_get_variable(EFI_LOADER_VARIABLE(LoaderSystemToken), NULL, NULL, &token_size);
2018         if (r == -ENODATA)
2019                 log_debug_errno(r, "LoaderSystemToken EFI variable is invalid (too short?), replacing.");
2020         else if (r < 0) {
2021                 if (r != -ENOENT)
2022                         return log_error_errno(r, "Failed to test system token validity: %m");
2023         } else {
2024                 if (token_size >= sz) {
2025                         /* Let's avoid writes if we can, and initialize this only once. */
2026                         log_debug("System token already written, not updating.");
2027                         return 0;
2028                 }
2029
2030                 log_debug("Existing system token size (%zu) does not match our expectations (%zu), replacing.", token_size, sz);
2031         }
2032
2033         r = genuine_random_bytes(buffer, sz, RANDOM_BLOCK);
2034         if (r < 0)
2035                 return log_error_errno(r, "Failed to acquire random seed: %m");
2036
2037         /* Let's write this variable with an umask in effect, so that unprivileged users can't see the token
2038          * and possibly get identification information or too much insight into the kernel's entropy pool
2039          * state. */
2040         RUN_WITH_UMASK(0077) {
2041                 r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderSystemToken), buffer, sz);
2042                 if (r < 0) {
2043                         if (!arg_graceful)
2044                                 return log_error_errno(r, "Failed to write 'LoaderSystemToken' EFI variable: %m");
2045
2046                         if (r == -EINVAL)
2047                                 log_warning_errno(r, "Unable to write 'LoaderSystemToken' EFI variable (firmware problem?), ignoring: %m");
2048                         else
2049                                 log_warning_errno(r, "Unable to write 'LoaderSystemToken' EFI variable, ignoring: %m");
2050                 } else
2051                         log_info("Successfully initialized system token in EFI variable with %zu bytes.", sz);
2052         }
2053
2054         return 0;
2055 }
2056
2057 static int sync_everything(void) {
2058         int ret = 0, k;
2059
2060         if (arg_esp_path) {
2061                 k = syncfs_path(AT_FDCWD, arg_esp_path);
2062                 if (k < 0)
2063                         ret = log_error_errno(k, "Failed to synchronize the ESP '%s': %m", arg_esp_path);
2064         }
2065
2066         if (arg_xbootldr_path) {
2067                 k = syncfs_path(AT_FDCWD, arg_xbootldr_path);
2068                 if (k < 0)
2069                         ret = log_error_errno(k, "Failed to synchronize $BOOT '%s': %m", arg_xbootldr_path);
2070         }
2071
2072         return ret;
2073 }
2074
2075 static int verb_install(int argc, char *argv[], void *userdata) {
2076         sd_id128_t uuid = SD_ID128_NULL;
2077         uint64_t pstart = 0, psize = 0;
2078         uint32_t part = 0;
2079         bool install, graceful;
2080         int r;
2081
2082         /* Invoked for both "update" and "install" */
2083
2084         install = streq(argv[0], "install");
2085         graceful = !install && arg_graceful; /* support graceful mode for updates */
2086
2087         r = acquire_esp(/* unprivileged_mode= */ false, graceful, &part, &pstart, &psize, &uuid, NULL);
2088         if (graceful && r == -ENOKEY)
2089                 return 0; /* If --graceful is specified and we can't find an ESP, handle this cleanly */
2090         if (r < 0)
2091                 return r;
2092
2093         if (!install) {
2094                 /* If we are updating, don't do anything if sd-boot wasn't actually installed. */
2095                 r = are_we_installed(arg_esp_path);
2096                 if (r < 0)
2097                         return r;
2098                 if (r == 0) {
2099                         log_debug("Skipping update because sd-boot is not installed in the ESP.");
2100                         return 0;
2101                 }
2102         }
2103
2104         r = acquire_xbootldr(/* unprivileged_mode= */ false, NULL, NULL);
2105         if (r < 0)
2106                 return r;
2107
2108         r = settle_make_entry_directory();
2109         if (r < 0)
2110                 return r;
2111
2112         RUN_WITH_UMASK(0002) {
2113                 if (install) {
2114                         /* Don't create any of these directories when we are just updating. When we update
2115                          * we'll drop-in our files (unless there are newer ones already), but we won't create
2116                          * the directories for them in the first place. */
2117                         r = create_subdirs(arg_esp_path, esp_subdirs);
2118                         if (r < 0)
2119                                 return r;
2120
2121                         r = create_subdirs(arg_dollar_boot_path(), dollar_boot_subdirs);
2122                         if (r < 0)
2123                                 return r;
2124                 }
2125
2126                 r = install_binaries(arg_esp_path, install);
2127                 if (r < 0)
2128                         return r;
2129
2130                 if (install) {
2131                         r = install_loader_config(arg_esp_path);
2132                         if (r < 0)
2133                                 return r;
2134
2135                         r = install_entry_directory(arg_dollar_boot_path());
2136                         if (r < 0)
2137                                 return r;
2138
2139                         r = install_entry_token();
2140                         if (r < 0)
2141                                 return r;
2142
2143                         r = install_random_seed(arg_esp_path);
2144                         if (r < 0)
2145                                 return r;
2146                 }
2147
2148                 r = install_loader_specification(arg_dollar_boot_path());
2149                 if (r < 0)
2150                         return r;
2151         }
2152
2153         (void) sync_everything();
2154
2155         if (arg_touch_variables)
2156                 r = install_variables(arg_esp_path,
2157                                       part, pstart, psize, uuid,
2158                                       "/EFI/systemd/systemd-boot" EFI_MACHINE_TYPE_NAME ".efi",
2159                                       install);
2160
2161         return r;
2162 }
2163
2164 static int verb_remove(int argc, char *argv[], void *userdata) {
2165         sd_id128_t uuid = SD_ID128_NULL;
2166         int r, q;
2167
2168         r = acquire_esp(/* unprivileged_mode= */ false, /* graceful= */ false, NULL, NULL, NULL, &uuid, NULL);
2169         if (r < 0)
2170                 return r;
2171
2172         r = acquire_xbootldr(/* unprivileged_mode= */ false, NULL, NULL);
2173         if (r < 0)
2174                 return r;
2175
2176         r = settle_make_entry_directory();
2177         if (r < 0)
2178                 return r;
2179
2180         r = remove_binaries(arg_esp_path);
2181
2182         q = remove_file(arg_esp_path, "/loader/loader.conf");
2183         if (q < 0 && r >= 0)
2184                 r = q;
2185
2186         q = remove_file(arg_esp_path, "/loader/random-seed");
2187         if (q < 0 && r >= 0)
2188                 r = q;
2189
2190         q = remove_file(arg_esp_path, "/loader/entries.srel");
2191         if (q < 0 && r >= 0)
2192                 r = q;
2193
2194         q = remove_subdirs(arg_esp_path, esp_subdirs);
2195         if (q < 0 && r >= 0)
2196                 r = q;
2197
2198         q = remove_subdirs(arg_esp_path, dollar_boot_subdirs);
2199         if (q < 0 && r >= 0)
2200                 r = q;
2201
2202         q = remove_entry_directory(arg_esp_path);
2203         if (q < 0 && r >= 0)
2204                 r = q;
2205
2206         if (arg_xbootldr_path) {
2207                 /* Remove a subset of these also from the XBOOTLDR partition if it exists */
2208
2209                 q = remove_file(arg_xbootldr_path, "/loader/entries.srel");
2210                 if (q < 0 && r >= 0)
2211                         r = q;
2212
2213                 q = remove_subdirs(arg_xbootldr_path, dollar_boot_subdirs);
2214                 if (q < 0 && r >= 0)
2215                         r = q;
2216
2217                 q = remove_entry_directory(arg_xbootldr_path);
2218                 if (q < 0 && r >= 0)
2219                         r = q;
2220         }
2221
2222         (void) sync_everything();
2223
2224         if (!arg_touch_variables)
2225                 return r;
2226
2227         q = remove_variables(uuid, "/EFI/systemd/systemd-boot" EFI_MACHINE_TYPE_NAME ".efi", true);
2228         if (q < 0 && r >= 0)
2229                 r = q;
2230
2231         q = remove_loader_variables();
2232         if (q < 0 && r >= 0)
2233                 r = q;
2234
2235         return r;
2236 }
2237
2238 static int verb_is_installed(int argc, char *argv[], void *userdata) {
2239         int r;
2240
2241         r = acquire_esp(/* privileged_mode= */ false,
2242                         /* graceful= */ arg_graceful,
2243                         NULL, NULL, NULL, NULL, NULL);
2244         if (r < 0)
2245                 return r;
2246
2247         r = are_we_installed(arg_esp_path);
2248         if (r < 0)
2249                 return r;
2250
2251         if (r > 0) {
2252                 if (!arg_quiet)
2253                         puts("yes");
2254                 return EXIT_SUCCESS;
2255         } else {
2256                 if (!arg_quiet)
2257                         puts("no");
2258                 return EXIT_FAILURE;
2259         }
2260 }
2261
2262 static int parse_timeout(const char *arg1, char16_t **ret_timeout, size_t *ret_timeout_size) {
2263         char utf8[DECIMAL_STR_MAX(usec_t)];
2264         char16_t *encoded;
2265         usec_t timeout;
2266         int r;
2267
2268         assert(arg1);
2269         assert(ret_timeout);
2270         assert(ret_timeout_size);
2271
2272         if (streq(arg1, "menu-force"))
2273                 timeout = USEC_INFINITY;
2274         else if (streq(arg1, "menu-hidden"))
2275                 timeout = 0;
2276         else {
2277                 r = parse_time(arg1, &timeout, USEC_PER_SEC);
2278                 if (r < 0)
2279                         return log_error_errno(r, "Failed to parse timeout '%s': %m", arg1);
2280                 if (timeout != USEC_INFINITY && timeout > UINT32_MAX * USEC_PER_SEC)
2281                         log_warning("Timeout is too long and will be treated as 'menu-force' instead.");
2282         }
2283
2284         xsprintf(utf8, USEC_FMT, MIN(timeout / USEC_PER_SEC, UINT32_MAX));
2285
2286         encoded = utf8_to_utf16(utf8, strlen(utf8));
2287         if (!encoded)
2288                 return log_oom();
2289
2290         *ret_timeout = encoded;
2291         *ret_timeout_size = char16_strlen(encoded) * 2 + 2;
2292         return 0;
2293 }
2294
2295 static int parse_loader_entry_target_arg(const char *arg1, char16_t **ret_target, size_t *ret_target_size) {
2296         char16_t *encoded = NULL;
2297         int r;
2298
2299         assert(arg1);
2300         assert(ret_target);
2301         assert(ret_target_size);
2302
2303         if (streq(arg1, "@current")) {
2304                 r = efi_get_variable(EFI_LOADER_VARIABLE(LoaderEntrySelected), NULL, (void *) ret_target, ret_target_size);
2305                 if (r < 0)
2306                         return log_error_errno(r, "Failed to get EFI variable 'LoaderEntrySelected': %m");
2307
2308         } else if (streq(arg1, "@oneshot")) {
2309                 r = efi_get_variable(EFI_LOADER_VARIABLE(LoaderEntryOneShot), NULL, (void *) ret_target, ret_target_size);
2310                 if (r < 0)
2311                         return log_error_errno(r, "Failed to get EFI variable 'LoaderEntryOneShot': %m");
2312
2313         } else if (streq(arg1, "@default")) {
2314                 r = efi_get_variable(EFI_LOADER_VARIABLE(LoaderEntryDefault), NULL, (void *) ret_target, ret_target_size);
2315                 if (r < 0)
2316                         return log_error_errno(r, "Failed to get EFI variable 'LoaderEntryDefault': %m");
2317
2318         } else if (arg1[0] == '@' && !streq(arg1, "@saved"))
2319                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unsupported special entry identifier: %s", arg1);
2320         else {
2321                 encoded = utf8_to_utf16(arg1, strlen(arg1));
2322                 if (!encoded)
2323                         return log_oom();
2324
2325                 *ret_target = encoded;
2326                 *ret_target_size = char16_strlen(encoded) * 2 + 2;
2327         }
2328
2329         return 0;
2330 }
2331
2332 static int verb_set_efivar(int argc, char *argv[], void *userdata) {
2333         int r;
2334
2335         if (!is_efi_boot())
2336                 return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
2337                                        "Not booted with UEFI.");
2338
2339         if (access(EFIVAR_PATH(EFI_LOADER_VARIABLE(LoaderInfo)), F_OK) < 0) {
2340                 if (errno == ENOENT) {
2341                         log_error_errno(errno, "Not booted with a supported boot loader.");
2342                         return -EOPNOTSUPP;
2343                 }
2344
2345                 return log_error_errno(errno, "Failed to detect whether boot loader supports '%s' operation: %m", argv[0]);
2346         }
2347
2348         if (detect_container() > 0)
2349                 return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
2350                                        "'%s' operation not supported in a container.",
2351                                        argv[0]);
2352
2353         if (!arg_touch_variables)
2354                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
2355                                        "'%s' operation cannot be combined with --no-variables.",
2356                                        argv[0]);
2357
2358         const char *variable;
2359         int (* arg_parser)(const char *, char16_t **, size_t *);
2360
2361         if (streq(argv[0], "set-default")) {
2362                 variable = EFI_LOADER_VARIABLE(LoaderEntryDefault);
2363                 arg_parser = parse_loader_entry_target_arg;
2364         } else if (streq(argv[0], "set-oneshot")) {
2365                 variable = EFI_LOADER_VARIABLE(LoaderEntryOneShot);
2366                 arg_parser = parse_loader_entry_target_arg;
2367         } else if (streq(argv[0], "set-timeout")) {
2368                 variable = EFI_LOADER_VARIABLE(LoaderConfigTimeout);
2369                 arg_parser = parse_timeout;
2370         } else if (streq(argv[0], "set-timeout-oneshot")) {
2371                 variable = EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot);
2372                 arg_parser = parse_timeout;
2373         } else
2374                 assert_not_reached();
2375
2376         if (isempty(argv[1])) {
2377                 r = efi_set_variable(variable, NULL, 0);
2378                 if (r < 0 && r != -ENOENT)
2379                         return log_error_errno(r, "Failed to remove EFI variable '%s': %m", variable);
2380         } else {
2381                 _cleanup_free_ char16_t *value = NULL;
2382                 size_t value_size = 0;
2383
2384                 r = arg_parser(argv[1], &value, &value_size);
2385                 if (r < 0)
2386                         return r;
2387                 r = efi_set_variable(variable, value, value_size);
2388                 if (r < 0)
2389                         return log_error_errno(r, "Failed to update EFI variable '%s': %m", variable);
2390         }
2391
2392         return 0;
2393 }
2394
2395 static int verb_random_seed(int argc, char *argv[], void *userdata) {
2396         int r;
2397
2398         r = find_esp_and_warn(arg_esp_path, false, &arg_esp_path, NULL, NULL, NULL, NULL, NULL);
2399         if (r == -ENOKEY) {
2400                 /* find_esp_and_warn() doesn't warn about ENOKEY, so let's do that on our own */
2401                 if (!arg_graceful)
2402                         return log_error_errno(r, "Unable to find ESP.");
2403
2404                 log_notice("No ESP found, not initializing random seed.");
2405                 return 0;
2406         }
2407         if (r < 0)
2408                 return r;
2409
2410         r = install_random_seed(arg_esp_path);
2411         if (r < 0)
2412                 return r;
2413
2414         (void) sync_everything();
2415         return 0;
2416 }
2417
2418 static int verb_systemd_efi_options(int argc, char *argv[], void *userdata) {
2419         int r;
2420
2421         if (argc == 1) {
2422                 _cleanup_free_ char *line = NULL, *new = NULL;
2423
2424                 r = systemd_efi_options_variable(&line);
2425                 if (r == -ENODATA)
2426                         log_debug("No SystemdOptions EFI variable present in cache.");
2427                 else if (r < 0)
2428                         return log_error_errno(r, "Failed to read SystemdOptions EFI variable from cache: %m");
2429                 else
2430                         puts(line);
2431
2432                 r = systemd_efi_options_efivarfs_if_newer(&new);
2433                 if (r == -ENODATA) {
2434                         if (line)
2435                                 log_notice("Note: SystemdOptions EFI variable has been removed since boot.");
2436                 } else if (r < 0)
2437                         log_warning_errno(r, "Failed to check SystemdOptions EFI variable in efivarfs, ignoring: %m");
2438                 else if (new && !streq_ptr(line, new))
2439                         log_notice("Note: SystemdOptions EFI variable has been modified since boot. New value: %s",
2440                                    new);
2441         } else {
2442                 r = efi_set_variable_string(EFI_SYSTEMD_VARIABLE(SystemdOptions), argv[1]);
2443                 if (r < 0)
2444                         return log_error_errno(r, "Failed to set SystemdOptions EFI variable: %m");
2445         }
2446
2447         return 0;
2448 }
2449
2450 static int verb_reboot_to_firmware(int argc, char *argv[], void *userdata) {
2451         int r;
2452
2453         if (argc < 2) {
2454                 r = efi_get_reboot_to_firmware();
2455                 if (r > 0) {
2456                         puts("active");
2457                         return EXIT_SUCCESS; /* success */
2458                 }
2459                 if (r == 0) {
2460                         puts("supported");
2461                         return 1; /* recognizable error #1 */
2462                 }
2463                 if (r == -EOPNOTSUPP) {
2464                         puts("not supported");
2465                         return 2; /* recognizable error #2 */
2466                 }
2467
2468                 log_error_errno(r, "Failed to query reboot-to-firmware state: %m");
2469                 return 3; /* other kind of error */
2470         } else {
2471                 r = parse_boolean(argv[1]);
2472                 if (r < 0)
2473                         return log_error_errno(r, "Failed to parse argument: %s", argv[1]);
2474
2475                 r = efi_set_reboot_to_firmware(r);
2476                 if (r < 0)
2477                         return log_error_errno(r, "Failed to set reboot-to-firmware option: %m");
2478
2479                 return 0;
2480         }
2481 }
2482
2483 static int bootctl_main(int argc, char *argv[]) {
2484         static const Verb verbs[] = {
2485                 { "help",                VERB_ANY, VERB_ANY, 0,            help                     },
2486                 { "status",              VERB_ANY, 1,        VERB_DEFAULT, verb_status              },
2487                 { "install",             VERB_ANY, 1,        0,            verb_install             },
2488                 { "update",              VERB_ANY, 1,        0,            verb_install             },
2489                 { "remove",              VERB_ANY, 1,        0,            verb_remove              },
2490                 { "is-installed",        VERB_ANY, 1,        0,            verb_is_installed        },
2491                 { "list",                VERB_ANY, 1,        0,            verb_list                },
2492                 { "set-default",         2,        2,        0,            verb_set_efivar          },
2493                 { "set-oneshot",         2,        2,        0,            verb_set_efivar          },
2494                 { "set-timeout",         2,        2,        0,            verb_set_efivar          },
2495                 { "set-timeout-oneshot", 2,        2,        0,            verb_set_efivar          },
2496                 { "random-seed",         VERB_ANY, 1,        0,            verb_random_seed         },
2497                 { "systemd-efi-options", VERB_ANY, 2,        0,            verb_systemd_efi_options },
2498                 { "reboot-to-firmware",  VERB_ANY, 2,        0,            verb_reboot_to_firmware  },
2499                 {}
2500         };
2501
2502         return dispatch_verb(argc, argv, verbs, NULL);
2503 }
2504
2505 static int run(int argc, char *argv[]) {
2506         int r;
2507
2508         log_parse_environment();
2509         log_open();
2510
2511         /* If we run in a container, automatically turn off EFI file system access */
2512         if (detect_container() > 0)
2513                 arg_touch_variables = false;
2514
2515         r = parse_argv(argc, argv);
2516         if (r <= 0)
2517                 return r;
2518
2519         return bootctl_main(argc, argv);
2520 }
2521
2522 DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run);