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 "dirent-util.h"
  20 #include "efi-api.h"
  21 #include "efi-loader.h"
  22 #include "efivars.h"
  23 #include "env-file.h"
  24 #include "env-util.h"
  25 #include "escape.h"
  26 #include "fd-util.h"
  27 #include "fileio.h"
  28 #include "find-esp.h"
  29 #include "fs-util.h"
  30 #include "glyph-util.h"
  31 #include "main-func.h"
  32 #include "mkdir.h"
  33 #include "os-util.h"
  34 #include "pager.h"
  35 #include "parse-argument.h"
  36 #include "parse-util.h"
  37 #include "pretty-print.h"
  38 #include "random-util.h"
  39 #include "rm-rf.h"
  40 #include "stat-util.h"
  41 #include "stdio-util.h"
  42 #include "string-table.h"
  43 #include "string-util.h"
  44 #include "strv.h"
  45 #include "sync-util.h"
  46 #include "terminal-util.h"
  47 #include "tmpfile-util.h"
  48 #include "tmpfile-util-label.h"
  49 #include "umask-util.h"
  50 #include "utf8.h"
  51 #include "util.h"
  52 #include "verbs.h"
  53 #include "virt.h"
  54
  55 static char *arg_esp_path = NULL;
  56 static char *arg_xbootldr_path = NULL;
  57 static bool arg_print_esp_path = false;
  58 static bool arg_print_dollar_boot_path = false;
  59 static bool arg_touch_variables = true;
  60 static PagerFlags arg_pager_flags = 0;
  61 static bool arg_graceful = false;
  62 static int arg_make_entry_directory = false; /* tri-state: < 0 for automatic logic */
  63 static sd_id128_t arg_machine_id = SD_ID128_NULL;
  64 static char *arg_install_layout = NULL;
  65 static enum {
  66         ARG_ENTRY_TOKEN_MACHINE_ID,
  67         ARG_ENTRY_TOKEN_OS_IMAGE_ID,
  68         ARG_ENTRY_TOKEN_OS_ID,
  69         ARG_ENTRY_TOKEN_LITERAL,
  70         ARG_ENTRY_TOKEN_AUTO,
  71 } arg_entry_token_type = ARG_ENTRY_TOKEN_AUTO;
  72 static char *arg_entry_token = NULL;
  73 static JsonFormatFlags arg_json_format_flags = JSON_FORMAT_OFF;
  74
  75 STATIC_DESTRUCTOR_REGISTER(arg_esp_path, freep);
  76 STATIC_DESTRUCTOR_REGISTER(arg_xbootldr_path, freep);
  77 STATIC_DESTRUCTOR_REGISTER(arg_install_layout, freep);
  78 STATIC_DESTRUCTOR_REGISTER(arg_entry_token, freep);
  79
  80 static const char *arg_dollar_boot_path(void) {
  81         /* $BOOT shall be the XBOOTLDR partition if it exists, and otherwise the ESP */
  82         return arg_xbootldr_path ?: arg_esp_path;
  83 }
  84
  85 static int acquire_esp(
  86                 bool unprivileged_mode,
  87                 bool graceful,
  88                 uint32_t *ret_part,
  89                 uint64_t *ret_pstart,
  90                 uint64_t *ret_psize,
  91                 sd_id128_t *ret_uuid,
  92                 dev_t *ret_devid) {
  93
  94         char *np;
  95         int r;
  96
  97         /* Find the ESP, and log about errors. Note that find_esp_and_warn() will log in all error cases on
  98          * its own, except for ENOKEY (which is good, we want to show our own message in that case,
  99          * suggesting use of --esp-path=) and EACCESS (only when we request unprivileged mode; in this case
 100          * we simply eat up the error here, so that --list and --status work too, without noise about
 101          * this). */
 102
 103         r = find_esp_and_warn(arg_esp_path, unprivileged_mode, &np, ret_part, ret_pstart, ret_psize, ret_uuid, ret_devid);
 104         if (r == -ENOKEY) {
 105                 if (graceful)
 106                         return log_info_errno(r, "Couldn't find EFI system partition, skipping.");
 107
 108                 return log_error_errno(r,
 109                                        "Couldn't find EFI system partition. It is recommended to mount it to /boot or /efi.\n"
 110                                        "Alternatively, use --esp-path= to specify path to mount point.");
 111         }
 112         if (r < 0)
 113                 return r;
 114
 115         free_and_replace(arg_esp_path, np);
 116         log_debug("Using EFI System Partition at %s.", arg_esp_path);
 117
 118         return 0;
 119 }
 120
 121 static int acquire_xbootldr(
 122                 bool unprivileged_mode,
 123                 sd_id128_t *ret_uuid,
 124                 dev_t *ret_devid) {
 125
 126         char *np;
 127         int r;
 128
 129         r = find_xbootldr_and_warn(arg_xbootldr_path, unprivileged_mode, &np, ret_uuid, ret_devid);
 130         if (r == -ENOKEY) {
 131                 log_debug_errno(r, "Didn't find an XBOOTLDR partition, using the ESP as $BOOT.");
 132                 arg_xbootldr_path = mfree(arg_xbootldr_path);
 133
 134                 if (ret_uuid)
 135                         *ret_uuid = SD_ID128_NULL;
 136                 if (ret_devid)
 137                         *ret_devid = 0;
 138                 return 0;
 139         }
 140         if (r < 0)
 141                 return r;
 142
 143         free_and_replace(arg_xbootldr_path, np);
 144         log_debug("Using XBOOTLDR partition at %s as $BOOT.", arg_xbootldr_path);
 145
 146         return 1;
 147 }
 148
 149 static int load_etc_machine_id(void) {
 150         int r;
 151
 152         r = sd_id128_get_machine(&arg_machine_id);
 153         if (IN_SET(r, -ENOENT, -ENOMEDIUM)) /* Not set or empty */
 154                 return 0;
 155         if (r < 0)
 156                 return log_error_errno(r, "Failed to get machine-id: %m");
 157
 158         log_debug("Loaded machine ID %s from /etc/machine-id.", SD_ID128_TO_STRING(arg_machine_id));
 159         return 0;
 160 }
 161
 162 static int load_etc_machine_info(void) {
 163         /* systemd v250 added support to store the kernel-install layout setting and the machine ID to use
 164          * for setting up the ESP in /etc/machine-info. The newer /etc/kernel/entry-token file, as well as
 165          * the $layout field in /etc/kernel/install.conf are better replacements for this though, hence this
 166          * has been deprecated and is only returned for compatibility. */
 167         _cleanup_free_ char *s = NULL, *layout = NULL;
 168         int r;
 169
 170         r = parse_env_file(NULL, "/etc/machine-info",
 171                            "KERNEL_INSTALL_LAYOUT", &layout,
 172                            "KERNEL_INSTALL_MACHINE_ID", &s);
 173         if (r == -ENOENT)
 174                 return 0;
 175         if (r < 0)
 176                 return log_error_errno(r, "Failed to parse /etc/machine-info: %m");
 177
 178         if (!isempty(s)) {
 179                 log_notice("Read $KERNEL_INSTALL_MACHINE_ID from /etc/machine-info. Please move it to /etc/kernel/entry-token.");
 180
 181                 r = sd_id128_from_string(s, &arg_machine_id);
 182                 if (r < 0)
 183                         return log_error_errno(r, "Failed to parse KERNEL_INSTALL_MACHINE_ID=%s in /etc/machine-info: %m", s);
 184
 185                 log_debug("Loaded KERNEL_INSTALL_MACHINE_ID=%s from KERNEL_INSTALL_MACHINE_ID in /etc/machine-info.",
 186                           SD_ID128_TO_STRING(arg_machine_id));
 187         }
 188
 189         if (!isempty(layout)) {
 190                 log_notice("Read $KERNEL_INSTALL_LAYOUT from /etc/machine-info. Please move it to the layout= setting of /etc/kernel/install.conf.");
 191
 192                 log_debug("KERNEL_INSTALL_LAYOUT=%s is specified in /etc/machine-info.", layout);
 193                 free_and_replace(arg_install_layout, layout);
 194         }
 195
 196         return 0;
 197 }
 198
 199 static int load_etc_kernel_install_conf(void) {
 200         _cleanup_free_ char *layout = NULL;
 201         int r;
 202
 203         r = parse_env_file(NULL, "/etc/kernel/install.conf",
 204                            "layout", &layout);
 205         if (r == -ENOENT)
 206                 return 0;
 207         if (r < 0)
 208                 return log_error_errno(r, "Failed to parse /etc/kernel/install.conf: %m");
 209
 210         if (!isempty(layout)) {
 211                 log_debug("layout=%s is specified in /etc/machine-info.", layout);
 212                 free_and_replace(arg_install_layout, layout);
 213         }
 214
 215         return 0;
 216 }
 217
 218 static int settle_entry_token(void) {
 219         int r;
 220
 221         switch (arg_entry_token_type) {
 222
 223         case ARG_ENTRY_TOKEN_AUTO: {
 224                 _cleanup_free_ char *buf = NULL;
 225                 r = read_one_line_file("/etc/kernel/entry-token", &buf);
 226                 if (r < 0 && r != -ENOENT)
 227                         return log_error_errno(r, "Failed to read /etc/kernel/entry-token: %m");
 228
 229                 if (!isempty(buf)) {
 230                         free_and_replace(arg_entry_token, buf);
 231                         arg_entry_token_type = ARG_ENTRY_TOKEN_LITERAL;
 232                 } else if (sd_id128_is_null(arg_machine_id)) {
 233                         _cleanup_free_ char *id = NULL, *image_id = NULL;
 234
 235                         r = parse_os_release(NULL,
 236                                              "IMAGE_ID", &image_id,
 237                                              "ID", &id);
 238                         if (r < 0)
 239                                 return log_error_errno(r, "Failed to load /etc/os-release: %m");
 240
 241                         if (!isempty(image_id)) {
 242                                 free_and_replace(arg_entry_token, image_id);
 243                                 arg_entry_token_type = ARG_ENTRY_TOKEN_OS_IMAGE_ID;
 244                         } else if (!isempty(id)) {
 245                                 free_and_replace(arg_entry_token, id);
 246                                 arg_entry_token_type = ARG_ENTRY_TOKEN_OS_ID;
 247                         } else
 248                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No machine ID set, and /etc/os-release carries no ID=/IMAGE_ID= fields.");
 249                 } else {
 250                         r = free_and_strdup_warn(&arg_entry_token, SD_ID128_TO_STRING(arg_machine_id));
 251                         if (r < 0)
 252                                 return r;
 253
 254                         arg_entry_token_type = ARG_ENTRY_TOKEN_MACHINE_ID;
 255                 }
 256
 257                 break;
 258         }
 259
 260         case ARG_ENTRY_TOKEN_MACHINE_ID:
 261                 if (sd_id128_is_null(arg_machine_id))
 262                         return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No machine ID set.");
 263
 264                 r = free_and_strdup_warn(&arg_entry_token, SD_ID128_TO_STRING(arg_machine_id));
 265                 if (r < 0)
 266                         return r;
 267
 268                 break;
 269
 270         case ARG_ENTRY_TOKEN_OS_IMAGE_ID: {
 271                 _cleanup_free_ char *buf = NULL;
 272
 273                 r = parse_os_release(NULL, "IMAGE_ID", &buf);
 274                 if (r < 0)
 275                         return log_error_errno(r, "Failed to load /etc/os-release: %m");
 276
 277                 if (isempty(buf))
 278                         return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "IMAGE_ID= field not set in /etc/os-release.");
 279
 280                 free_and_replace(arg_entry_token, buf);
 281                 break;
 282         }
 283
 284         case ARG_ENTRY_TOKEN_OS_ID: {
 285                 _cleanup_free_ char *buf = NULL;
 286
 287                 r = parse_os_release(NULL, "ID", &buf);
 288                 if (r < 0)
 289                         return log_error_errno(r, "Failed to load /etc/os-release: %m");
 290
 291                 if (isempty(buf))
 292                         return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "ID= field not set in /etc/os-release.");
 293
 294                 free_and_replace(arg_entry_token, buf);
 295                 break;
 296         }
 297
 298         case ARG_ENTRY_TOKEN_LITERAL:
 299                 assert(!isempty(arg_entry_token)); /* already filled in by command line parser */
 300                 break;
 301         }
 302
 303         if (isempty(arg_entry_token) || !string_is_safe(arg_entry_token))
 304                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Selected entry token not valid: %s", arg_entry_token);
 305
 306         log_debug("Using entry token: %s", arg_entry_token);
 307         return 0;
 308 }
 309
 310 static bool use_boot_loader_spec_type1(void) {
 311         /* If the layout is not specified, or if it is set explicitly to "bls" we assume Boot Loader
 312          * Specification Type #1 is the chosen format for our boot loader entries */
 313         return !arg_install_layout || streq(arg_install_layout, "bls");
 314 }
 315
 316 static int settle_make_entry_directory(void) {
 317         int r;
 318
 319         r = load_etc_machine_id();
 320         if (r < 0)
 321                 return r;
 322
 323         r = load_etc_machine_info();
 324         if (r < 0)
 325                 return r;
 326
 327         r = load_etc_kernel_install_conf();
 328         if (r < 0)
 329                 return r;
 330
 331         r = settle_entry_token();
 332         if (r < 0)
 333                 return r;
 334
 335         bool layout_type1 = use_boot_loader_spec_type1();
 336         if (arg_make_entry_directory < 0) { /* Automatic mode */
 337                 if (layout_type1) {
 338                         if (arg_entry_token == ARG_ENTRY_TOKEN_MACHINE_ID) {
 339                                 r = path_is_temporary_fs("/etc/machine-id");
 340                                 if (r < 0)
 341                                         return log_debug_errno(r, "Couldn't determine whether /etc/machine-id is on a temporary file system: %m");
 342
 343                                 arg_make_entry_directory = r == 0;
 344                         } else
 345                                 arg_make_entry_directory = true;
 346                 } else
 347                         arg_make_entry_directory = false;
 348         }
 349
 350         if (arg_make_entry_directory > 0 && !layout_type1)
 351                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 352                                        "KERNEL_INSTALL_LAYOUT=%s is configured, but Boot Loader Specification Type #1 entry directory creation was requested.",
 353                                        arg_install_layout);
 354
 355         return 0;
 356 }
 357
 358 /* search for "#### LoaderInfo: systemd-boot 218 ####" string inside the binary */
 359 static int get_file_version(int fd, char **v) {
 360         struct stat st;
 361         char *buf;
 362         const char *s, *e;
 363         char *x = NULL;
 364         int r;
 365
 366         assert(fd >= 0);
 367         assert(v);
 368
 369         if (fstat(fd, &st) < 0)
 370                 return log_error_errno(errno, "Failed to stat EFI binary: %m");
 371
 372         r = stat_verify_regular(&st);
 373         if (r < 0)
 374                 return log_error_errno(r, "EFI binary is not a regular file: %m");
 375
 376         if (st.st_size < 27 || file_offset_beyond_memory_size(st.st_size)) {
 377                 *v = NULL;
 378                 return 0;
 379         }
 380
 381         buf = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
 382         if (buf == MAP_FAILED)
 383                 return log_error_errno(errno, "Failed to memory map EFI binary: %m");
 384
 385         s = mempmem_safe(buf, st.st_size - 8, "#### LoaderInfo: ", 17);
 386         if (!s)
 387                 goto finish;
 388
 389         e = memmem_safe(s, st.st_size - (s - buf), " ####", 5);
 390         if (!e || e - s < 3) {
 391                 r = log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Malformed version string.");
 392                 goto finish;
 393         }
 394
 395         x = strndup(s, e - s);
 396         if (!x) {
 397                 r = log_oom();
 398                 goto finish;
 399         }
 400         r = 1;
 401
 402 finish:
 403         (void) munmap(buf, st.st_size);
 404         *v = x;
 405         return r;
 406 }
 407
 408 static int enumerate_binaries(const char *esp_path, const char *path, const char *prefix) {
 409         _cleanup_closedir_ DIR *d = NULL;
 410         const char *p;
 411         int c = 0, r;
 412
 413         assert(esp_path);
 414         assert(path);
 415
 416         p = prefix_roota(esp_path, path);
 417         d = opendir(p);
 418         if (!d) {
 419                 if (errno == ENOENT)
 420                         return 0;
 421
 422                 return log_error_errno(errno, "Failed to read \"%s\": %m", p);
 423         }
 424
 425         FOREACH_DIRENT(de, d, break) {
 426                 _cleanup_free_ char *v = NULL;
 427                 _cleanup_close_ int fd = -1;
 428
 429                 if (!endswith_no_case(de->d_name, ".efi"))
 430                         continue;
 431
 432                 if (prefix && !startswith_no_case(de->d_name, prefix))
 433                         continue;
 434
 435                 fd = openat(dirfd(d), de->d_name, O_RDONLY|O_CLOEXEC);
 436                 if (fd < 0)
 437                         return log_error_errno(errno, "Failed to open \"%s/%s\" for reading: %m", p, de->d_name);
 438
 439                 r = get_file_version(fd, &v);
 440                 if (r < 0)
 441                         return r;
 442                 if (r > 0)
 443                         printf("         File: %s/%s/%s (%s%s%s)\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), path, de->d_name, ansi_highlight(), v, ansi_normal());
 444                 else
 445                         printf("         File: %s/%s/%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), path, de->d_name);
 446
 447                 c++;
 448         }
 449
 450         return c;
 451 }
 452
 453 static int status_binaries(const char *esp_path, sd_id128_t partition) {
 454         int r;
 455
 456         printf("Available Boot Loaders on ESP:\n");
 457
 458         if (!esp_path) {
 459                 printf("          ESP: Cannot find or access mount point of ESP.\n\n");
 460                 return -ENOENT;
 461         }
 462
 463         printf("          ESP: %s", esp_path);
 464         if (!sd_id128_is_null(partition))
 465                 printf(" (/dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR ")", SD_ID128_FORMAT_VAL(partition));
 466         printf("\n");
 467
 468         r = enumerate_binaries(esp_path, "EFI/systemd", NULL);
 469         if (r < 0)
 470                 goto finish;
 471         if (r == 0)
 472                 log_info("systemd-boot not installed in ESP.");
 473
 474         r = enumerate_binaries(esp_path, "EFI/BOOT", "boot");
 475         if (r < 0)
 476                 goto finish;
 477         if (r == 0)
 478                 log_info("No default/fallback boot loader installed in ESP.");
 479
 480         r = 0;
 481
 482 finish:
 483         printf("\n");
 484         return r;
 485 }
 486
 487 static int print_efi_option(uint16_t id, bool in_order) {
 488         _cleanup_free_ char *title = NULL;
 489         _cleanup_free_ char *path = NULL;
 490         sd_id128_t partition;
 491         bool active;
 492         int r;
 493
 494         r = efi_get_boot_option(id, &title, &partition, &path, &active);
 495         if (r < 0)
 496                 return r;
 497
 498         /* print only configured entries with partition information */
 499         if (!path || sd_id128_is_null(partition))
 500                 return 0;
 501
 502         efi_tilt_backslashes(path);
 503
 504         printf("        Title: %s%s%s\n", ansi_highlight(), strna(title), ansi_normal());
 505         printf("           ID: 0x%04X\n", id);
 506         printf("       Status: %sactive%s\n", active ? "" : "in", in_order ? ", boot-order" : "");
 507         printf("    Partition: /dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR "\n",
 508                SD_ID128_FORMAT_VAL(partition));
 509         printf("         File: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), path);
 510         printf("\n");
 511
 512         return 0;
 513 }
 514
 515 static int status_variables(void) {
 516         _cleanup_free_ uint16_t *options = NULL, *order = NULL;
 517         int n_options, n_order;
 518
 519         n_options = efi_get_boot_options(&options);
 520         if (n_options == -ENOENT)
 521                 return log_error_errno(n_options,
 522                                        "Failed to access EFI variables, efivarfs"
 523                                        " needs to be available at /sys/firmware/efi/efivars/.");
 524         if (n_options < 0)
 525                 return log_error_errno(n_options, "Failed to read EFI boot entries: %m");
 526
 527         n_order = efi_get_boot_order(&order);
 528         if (n_order == -ENOENT)
 529                 n_order = 0;
 530         else if (n_order < 0)
 531                 return log_error_errno(n_order, "Failed to read EFI boot order: %m");
 532
 533         /* print entries in BootOrder first */
 534         printf("Boot Loaders Listed in EFI Variables:\n");
 535         for (int i = 0; i < n_order; i++)
 536                 print_efi_option(order[i], true);
 537
 538         /* print remaining entries */
 539         for (int i = 0; i < n_options; i++) {
 540                 for (int j = 0; j < n_order; j++)
 541                         if (options[i] == order[j])
 542                                 goto next_option;
 543
 544                 print_efi_option(options[i], false);
 545
 546         next_option:
 547                 continue;
 548         }
 549
 550         return 0;
 551 }
 552
 553 static int boot_entry_file_check(const char *root, const char *p) {
 554         _cleanup_free_ char *path = NULL;
 555
 556         path = path_join(root, p);
 557         if (!path)
 558                 return log_oom();
 559
 560         return RET_NERRNO(access(path, F_OK));
 561 }
 562
 563 static void boot_entry_file_list(const char *field, const char *root, const char *p, int *ret_status) {
 564         int status = boot_entry_file_check(root, p);
 565
 566         printf("%13s%s ", strempty(field), field ? ":" : " ");
 567         if (status < 0) {
 568                 errno = -status;
 569                 printf("%s%s%s (%m)\n", ansi_highlight_red(), p, ansi_normal());
 570         } else
 571                 printf("%s\n", p);
 572
 573         if (*ret_status == 0 && status < 0)
 574                 *ret_status = status;
 575 }
 576
 577 static const char* const boot_entry_type_table[_BOOT_ENTRY_TYPE_MAX] = {
 578         [BOOT_ENTRY_CONF]        = "Boot Loader Specification Type #1 (.conf)",
 579         [BOOT_ENTRY_UNIFIED]     = "Boot Loader Specification Type #2 (.efi)",
 580         [BOOT_ENTRY_LOADER]      = "Reported by Boot Loader",
 581         [BOOT_ENTRY_LOADER_AUTO] = "Automatic",
 582 };
 583
 584 DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(boot_entry_type, BootEntryType);
 585
 586 static int boot_config_load_and_select(
 587                 BootConfig *config,
 588                 const char *esp_path,
 589                 dev_t esp_devid,
 590                 const char *xbootldr_path,
 591                 dev_t xbootldr_devid) {
 592
 593         _cleanup_strv_free_ char **efi_entries = NULL;
 594         int r;
 595
 596         /* If XBOOTLDR and ESP actually refer to the same block device, suppress XBOOTLDR, since it would
 597          * find the same entries twice. */
 598         bool same = esp_path && xbootldr_path && devid_set_and_equal(esp_devid, xbootldr_devid);
 599
 600         r = boot_config_load(config, esp_path, same ? NULL : xbootldr_path);
 601         if (r < 0)
 602                 return r;
 603
 604         r = efi_loader_get_entries(&efi_entries);
 605         if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r))
 606                 log_debug_errno(r, "Boot loader reported no entries.");
 607         else if (r < 0)
 608                 log_warning_errno(r, "Failed to determine entries reported by boot loader, ignoring: %m");
 609         else
 610                 (void) boot_config_augment_from_loader(config, efi_entries, /* only_auto= */ false);
 611
 612         return boot_config_select_special_entries(config);
 613 }
 614
 615 static int boot_entry_show(
 616                 const BootEntry *e,
 617                 bool show_as_default,
 618                 bool show_as_selected,
 619                 bool show_reported) {
 620
 621         int status = 0;
 622
 623         /* Returns 0 on success, negative on processing error, and positive if something is wrong with the
 624            boot entry itself. */
 625
 626         assert(e);
 627
 628         printf("         type: %s\n",
 629                boot_entry_type_to_string(e->type));
 630
 631         printf("        title: %s%s%s",
 632                ansi_highlight(), boot_entry_title(e), ansi_normal());
 633
 634         if (show_as_default)
 635                 printf(" %s(default)%s",
 636                        ansi_highlight_green(), ansi_normal());
 637
 638         if (show_as_selected)
 639                 printf(" %s(selected)%s",
 640                        ansi_highlight_magenta(), ansi_normal());
 641
 642         if (show_reported) {
 643                 if (e->type == BOOT_ENTRY_LOADER)
 644                         printf(" %s(reported/absent)%s",
 645                                ansi_highlight_red(), ansi_normal());
 646                 else if (!e->reported_by_loader && e->type != BOOT_ENTRY_LOADER_AUTO)
 647                         printf(" %s(not reported/new)%s",
 648                                ansi_highlight_green(), ansi_normal());
 649         }
 650
 651         putchar('\n');
 652
 653         if (e->id)
 654                 printf("           id: %s\n", e->id);
 655         if (e->path) {
 656                 _cleanup_free_ char *link = NULL;
 657
 658                 /* Let's urlify the link to make it easy to view in an editor, but only if it is a text
 659                  * file. Unified images are binary ELFs, and EFI variables are not pure text either. */
 660                 if (e->type == BOOT_ENTRY_CONF)
 661                         (void) terminal_urlify_path(e->path, NULL, &link);
 662
 663                 printf("       source: %s\n", link ?: e->path);
 664         }
 665         if (e->sort_key)
 666                 printf("     sort-key: %s\n", e->sort_key);
 667         if (e->version)
 668                 printf("      version: %s\n", e->version);
 669         if (e->machine_id)
 670                 printf("   machine-id: %s\n", e->machine_id);
 671         if (e->architecture)
 672                 printf(" architecture: %s\n", e->architecture);
 673         if (e->kernel)
 674                 boot_entry_file_list("linux", e->root, e->kernel, &status);
 675
 676         STRV_FOREACH(s, e->initrd)
 677                 boot_entry_file_list(s == e->initrd ? "initrd" : NULL,
 678                                      e->root,
 679                                      *s,
 680                                      &status);
 681
 682         if (!strv_isempty(e->options)) {
 683                 _cleanup_free_ char *t = NULL, *t2 = NULL;
 684                 _cleanup_strv_free_ char **ts = NULL;
 685
 686                 t = strv_join(e->options, " ");
 687                 if (!t)
 688                         return log_oom();
 689
 690                 ts = strv_split_newlines(t);
 691                 if (!ts)
 692                         return log_oom();
 693
 694                 t2 = strv_join(ts, "\n              ");
 695                 if (!t2)
 696                         return log_oom();
 697
 698                 printf("      options: %s\n", t2);
 699         }
 700
 701         if (e->device_tree)
 702                 boot_entry_file_list("devicetree", e->root, e->device_tree, &status);
 703
 704         STRV_FOREACH(s, e->device_tree_overlay)
 705                 boot_entry_file_list(s == e->device_tree_overlay ? "devicetree-overlay" : NULL,
 706                                      e->root,
 707                                      *s,
 708                                      &status);
 709
 710         return -status;
 711 }
 712
 713 static int status_entries(
 714                 const BootConfig *config,
 715                 const char *esp_path,
 716                 sd_id128_t esp_partition_uuid,
 717                 const char *xbootldr_path,
 718                 sd_id128_t xbootldr_partition_uuid) {
 719
 720         sd_id128_t dollar_boot_partition_uuid;
 721         const char *dollar_boot_path;
 722         int r;
 723
 724         assert(config);
 725         assert(esp_path || xbootldr_path);
 726
 727         if (xbootldr_path) {
 728                 dollar_boot_path = xbootldr_path;
 729                 dollar_boot_partition_uuid = xbootldr_partition_uuid;
 730         } else {
 731                 dollar_boot_path = esp_path;
 732                 dollar_boot_partition_uuid = esp_partition_uuid;
 733         }
 734
 735         printf("Boot Loader Entries:\n"
 736                "        $BOOT: %s", dollar_boot_path);
 737         if (!sd_id128_is_null(dollar_boot_partition_uuid))
 738                 printf(" (/dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR ")",
 739                        SD_ID128_FORMAT_VAL(dollar_boot_partition_uuid));
 740         printf("\n\n");
 741
 742         if (config->default_entry < 0)
 743                 printf("%zu entries, no entry could be determined as default.\n", config->n_entries);
 744         else {
 745                 printf("Default Boot Loader Entry:\n");
 746
 747                 r = boot_entry_show(
 748                                 boot_config_default_entry(config),
 749                                 /* show_as_default= */ false,
 750                                 /* show_as_selected= */ false,
 751                                 /* show_discovered= */ false);
 752                 if (r > 0)
 753                         /* < 0 is already logged by the function itself, let's just emit an extra warning if
 754                            the default entry is broken */
 755                         printf("\nWARNING: default boot entry is broken\n");
 756         }
 757
 758         return 0;
 759 }
 760
 761 static int compare_product(const char *a, const char *b) {
 762         size_t x, y;
 763
 764         assert(a);
 765         assert(b);
 766
 767         x = strcspn(a, " ");
 768         y = strcspn(b, " ");
 769         if (x != y)
 770                 return x < y ? -1 : x > y ? 1 : 0;
 771
 772         return strncmp(a, b, x);
 773 }
 774
 775 static int compare_version(const char *a, const char *b) {
 776         assert(a);
 777         assert(b);
 778
 779         a += strcspn(a, " ");
 780         a += strspn(a, " ");
 781         b += strcspn(b, " ");
 782         b += strspn(b, " ");
 783
 784         return strverscmp_improved(a, b);
 785 }
 786
 787 static int version_check(int fd_from, const char *from, int fd_to, const char *to) {
 788         _cleanup_free_ char *a = NULL, *b = NULL;
 789         int r;
 790
 791         assert(fd_from >= 0);
 792         assert(from);
 793         assert(fd_to >= 0);
 794         assert(to);
 795
 796         r = get_file_version(fd_from, &a);
 797         if (r < 0)
 798                 return r;
 799         if (r == 0)
 800                 return log_notice_errno(SYNTHETIC_ERRNO(EREMOTE),
 801                                        "Source file \"%s\" does not carry version information!",
 802                                        from);
 803
 804         r = get_file_version(fd_to, &b);
 805         if (r < 0)
 806                 return r;
 807         if (r == 0 || compare_product(a, b) != 0)
 808                 return log_notice_errno(SYNTHETIC_ERRNO(EREMOTE),
 809                                         "Skipping \"%s\", since it's owned by another boot loader.",
 810                                         to);
 811
 812         r = compare_version(a, b);
 813         if (r < 0)
 814                 return log_warning_errno(SYNTHETIC_ERRNO(ESTALE), "Skipping \"%s\", since newer boot loader version in place already.", to);
 815         else if (r == 0)
 816                 return log_info_errno(SYNTHETIC_ERRNO(ESTALE), "Skipping \"%s\", since same boot loader version in place already.", to);
 817
 818         return 0;
 819 }
 820
 821 static int copy_file_with_version_check(const char *from, const char *to, bool force) {
 822         _cleanup_close_ int fd_from = -1, fd_to = -1;
 823         _cleanup_free_ char *t = NULL;
 824         int r;
 825
 826         fd_from = open(from, O_RDONLY|O_CLOEXEC|O_NOCTTY);
 827         if (fd_from < 0)
 828                 return log_error_errno(errno, "Failed to open \"%s\" for reading: %m", from);
 829
 830         if (!force) {
 831                 fd_to = open(to, O_RDONLY|O_CLOEXEC|O_NOCTTY);
 832                 if (fd_to < 0) {
 833                         if (errno != ENOENT)
 834                                 return log_error_errno(errno, "Failed to open \"%s\" for reading: %m", to);
 835                 } else {
 836                         r = version_check(fd_from, from, fd_to, to);
 837                         if (r < 0)
 838                                 return r;
 839
 840                         if (lseek(fd_from, 0, SEEK_SET) == (off_t) -1)
 841                                 return log_error_errno(errno, "Failed to seek in \"%s\": %m", from);
 842
 843                         fd_to = safe_close(fd_to);
 844                 }
 845         }
 846
 847         r = tempfn_random(to, NULL, &t);
 848         if (r < 0)
 849                 return log_oom();
 850
 851         RUN_WITH_UMASK(0000) {
 852                 fd_to = open(t, O_WRONLY|O_CREAT|O_CLOEXEC|O_EXCL|O_NOFOLLOW, 0644);
 853                 if (fd_to < 0)
 854                         return log_error_errno(errno, "Failed to open \"%s\" for writing: %m", t);
 855         }
 856
 857         r = copy_bytes(fd_from, fd_to, UINT64_MAX, COPY_REFLINK);
 858         if (r < 0) {
 859                 (void) unlink(t);
 860                 return log_error_errno(r, "Failed to copy data from \"%s\" to \"%s\": %m", from, t);
 861         }
 862
 863         (void) copy_times(fd_from, fd_to, 0);
 864
 865         r = fsync_full(fd_to);
 866         if (r < 0) {
 867                 (void) unlink_noerrno(t);
 868                 return log_error_errno(r, "Failed to copy data from \"%s\" to \"%s\": %m", from, t);
 869         }
 870
 871         if (renameat(AT_FDCWD, t, AT_FDCWD, to) < 0) {
 872                 (void) unlink_noerrno(t);
 873                 return log_error_errno(errno, "Failed to rename \"%s\" to \"%s\": %m", t, to);
 874         }
 875
 876         log_info("Copied \"%s\" to \"%s\".", from, to);
 877
 878         return 0;
 879 }
 880
 881 static int mkdir_one(const char *prefix, const char *suffix) {
 882         _cleanup_free_ char *p = NULL;
 883
 884         p = path_join(prefix, suffix);
 885         if (mkdir(p, 0700) < 0) {
 886                 if (errno != EEXIST)
 887                         return log_error_errno(errno, "Failed to create \"%s\": %m", p);
 888         } else
 889                 log_info("Created \"%s\".", p);
 890
 891         return 0;
 892 }
 893
 894 static const char *const esp_subdirs[] = {
 895         /* The directories to place in the ESP */
 896         "EFI",
 897         "EFI/systemd",
 898         "EFI/BOOT",
 899         "loader",
 900         NULL
 901 };
 902
 903 static const char *const dollar_boot_subdirs[] = {
 904         /* The directories to place in the XBOOTLDR partition or the ESP, depending what exists */
 905         "loader",
 906         "loader/entries",  /* Type #1 entries */
 907         "EFI",
 908         "EFI/Linux",       /* Type #2 entries */
 909         NULL
 910 };
 911
 912 static int create_subdirs(const char *root, const char * const *subdirs) {
 913         int r;
 914
 915         STRV_FOREACH(i, subdirs) {
 916                 r = mkdir_one(root, *i);
 917                 if (r < 0)
 918                         return r;
 919         }
 920
 921         return 0;
 922 }
 923
 924 static int copy_one_file(const char *esp_path, const char *name, bool force) {
 925         const char *e;
 926         char *p, *q, *dest_name, *s;
 927         int r;
 928
 929         dest_name = strdupa_safe(name);
 930         s = endswith_no_case(dest_name, ".signed");
 931         if (s)
 932                 *s = 0;
 933
 934         p = strjoina(BOOTLIBDIR "/", name);
 935         q = strjoina(esp_path, "/EFI/systemd/", dest_name);
 936         r = copy_file_with_version_check(p, q, force);
 937
 938         e = startswith(dest_name, "systemd-boot");
 939         if (e) {
 940                 int k;
 941                 char *v;
 942
 943                 /* Create the EFI default boot loader name (specified for removable devices) */
 944                 v = strjoina(esp_path, "/EFI/BOOT/BOOT", e);
 945                 ascii_strupper(strrchr(v, '/') + 1);
 946
 947                 k = copy_file_with_version_check(p, v, force);
 948                 if (k < 0 && r == 0)
 949                         r = k;
 950         }
 951
 952         return r;
 953 }
 954
 955 static int install_binaries(const char *esp_path, bool force) {
 956         _cleanup_closedir_ DIR *d = NULL;
 957         int r = 0;
 958
 959         d = opendir(BOOTLIBDIR);
 960         if (!d)
 961                 return log_error_errno(errno, "Failed to open \""BOOTLIBDIR"\": %m");
 962
 963         FOREACH_DIRENT(de, d, return log_error_errno(errno, "Failed to read \""BOOTLIBDIR"\": %m")) {
 964                 int k;
 965
 966                 if (!endswith_no_case(de->d_name, ".efi") && !endswith_no_case(de->d_name, ".efi.signed"))
 967                         continue;
 968
 969                 /* skip the .efi file, if there's a .signed version of it */
 970                 if (endswith_no_case(de->d_name, ".efi")) {
 971                         _cleanup_free_ const char *s = strjoin(de->d_name, ".signed");
 972                         if (!s)
 973                                 return log_oom();
 974                         if (faccessat(dirfd(d), s, F_OK, 0) >= 0)
 975                                 continue;
 976                 }
 977
 978                 k = copy_one_file(esp_path, de->d_name, force);
 979                 /* Don't propagate an error code if no update necessary, installed version already equal or
 980                  * newer version, or other boot loader in place. */
 981                 if (arg_graceful && IN_SET(k, -ESTALE, -EREMOTE))
 982                         continue;
 983                 if (k < 0 && r == 0)
 984                         r = k;
 985         }
 986
 987         return r;
 988 }
 989
 990 static bool same_entry(uint16_t id, sd_id128_t uuid, const char *path) {
 991         _cleanup_free_ char *opath = NULL;
 992         sd_id128_t ouuid;
 993         int r;
 994
 995         r = efi_get_boot_option(id, NULL, &ouuid, &opath, NULL);
 996         if (r < 0)
 997                 return false;
 998         if (!sd_id128_equal(uuid, ouuid))
 999                 return false;
1000
1001         /* Some motherboards convert the path to uppercase under certain circumstances
1002          * (e.g. after booting into the Boot Menu in the ASUS ROG STRIX B350-F GAMING),
1003          * so use case-insensitive checking */
1004         if (!strcaseeq_ptr(path, opath))
1005                 return false;
1006
1007         return true;
1008 }
1009
1010 static int find_slot(sd_id128_t uuid, const char *path, uint16_t *id) {
1011         _cleanup_free_ uint16_t *options = NULL;
1012         int n, i;
1013
1014         n = efi_get_boot_options(&options);
1015         if (n < 0)
1016                 return n;
1017
1018         /* find already existing systemd-boot entry */
1019         for (i = 0; i < n; i++)
1020                 if (same_entry(options[i], uuid, path)) {
1021                         *id = options[i];
1022                         return 1;
1023                 }
1024
1025         /* find free slot in the sorted BootXXXX variable list */
1026         for (i = 0; i < n; i++)
1027                 if (i != options[i]) {
1028                         *id = i;
1029                         return 0;
1030                 }
1031
1032         /* use the next one */
1033         if (i == 0xffff)
1034                 return -ENOSPC;
1035         *id = i;
1036         return 0;
1037 }
1038
1039 static int insert_into_order(uint16_t slot, bool first) {
1040         _cleanup_free_ uint16_t *order = NULL;
1041         uint16_t *t;
1042         int n;
1043
1044         n = efi_get_boot_order(&order);
1045         if (n <= 0)
1046                 /* no entry, add us */
1047                 return efi_set_boot_order(&slot, 1);
1048
1049         /* are we the first and only one? */
1050         if (n == 1 && order[0] == slot)
1051                 return 0;
1052
1053         /* are we already in the boot order? */
1054         for (int i = 0; i < n; i++) {
1055                 if (order[i] != slot)
1056                         continue;
1057
1058                 /* we do not require to be the first one, all is fine */
1059                 if (!first)
1060                         return 0;
1061
1062                 /* move us to the first slot */
1063                 memmove(order + 1, order, i * sizeof(uint16_t));
1064                 order[0] = slot;
1065                 return efi_set_boot_order(order, n);
1066         }
1067
1068         /* extend array */
1069         t = reallocarray(order, n + 1, sizeof(uint16_t));
1070         if (!t)
1071                 return -ENOMEM;
1072         order = t;
1073
1074         /* add us to the top or end of the list */
1075         if (first) {
1076                 memmove(order + 1, order, n * sizeof(uint16_t));
1077                 order[0] = slot;
1078         } else
1079                 order[n] = slot;
1080
1081         return efi_set_boot_order(order, n + 1);
1082 }
1083
1084 static int remove_from_order(uint16_t slot) {
1085         _cleanup_free_ uint16_t *order = NULL;
1086         int n;
1087
1088         n = efi_get_boot_order(&order);
1089         if (n <= 0)
1090                 return n;
1091
1092         for (int i = 0; i < n; i++) {
1093                 if (order[i] != slot)
1094                         continue;
1095
1096                 if (i + 1 < n)
1097                         memmove(order + i, order + i+1, (n - i) * sizeof(uint16_t));
1098                 return efi_set_boot_order(order, n - 1);
1099         }
1100
1101         return 0;
1102 }
1103
1104 static int install_variables(const char *esp_path,
1105                              uint32_t part, uint64_t pstart, uint64_t psize,
1106                              sd_id128_t uuid, const char *path,
1107                              bool first) {
1108         const char *p;
1109         uint16_t slot;
1110         int r;
1111
1112         if (!is_efi_boot()) {
1113                 log_warning("Not booted with EFI, skipping EFI variable setup.");
1114                 return 0;
1115         }
1116
1117         p = prefix_roota(esp_path, path);
1118         if (access(p, F_OK) < 0) {
1119                 if (errno == ENOENT)
1120                         return 0;
1121
1122                 return log_error_errno(errno, "Cannot access \"%s\": %m", p);
1123         }
1124
1125         r = find_slot(uuid, path, &slot);
1126         if (r < 0)
1127                 return log_error_errno(r,
1128                                        r == -ENOENT ?
1129                                        "Failed to access EFI variables. Is the \"efivarfs\" filesystem mounted?" :
1130                                        "Failed to determine current boot order: %m");
1131
1132         if (first || r == 0) {
1133                 r = efi_add_boot_option(slot, "Linux Boot Manager",
1134                                         part, pstart, psize,
1135                                         uuid, path);
1136                 if (r < 0)
1137                         return log_error_errno(r, "Failed to create EFI Boot variable entry: %m");
1138
1139                 log_info("Created EFI boot entry \"Linux Boot Manager\".");
1140         }
1141
1142         return insert_into_order(slot, first);
1143 }
1144
1145 static int remove_boot_efi(const char *esp_path) {
1146         _cleanup_closedir_ DIR *d = NULL;
1147         const char *p;
1148         int r, c = 0;
1149
1150         p = prefix_roota(esp_path, "/EFI/BOOT");
1151         d = opendir(p);
1152         if (!d) {
1153                 if (errno == ENOENT)
1154                         return 0;
1155
1156                 return log_error_errno(errno, "Failed to open directory \"%s\": %m", p);
1157         }
1158
1159         FOREACH_DIRENT(de, d, break) {
1160                 _cleanup_close_ int fd = -1;
1161                 _cleanup_free_ char *v = NULL;
1162
1163                 if (!endswith_no_case(de->d_name, ".efi"))
1164                         continue;
1165
1166                 if (!startswith_no_case(de->d_name, "boot"))
1167                         continue;
1168
1169                 fd = openat(dirfd(d), de->d_name, O_RDONLY|O_CLOEXEC);
1170                 if (fd < 0)
1171                         return log_error_errno(errno, "Failed to open \"%s/%s\" for reading: %m", p, de->d_name);
1172
1173                 r = get_file_version(fd, &v);
1174                 if (r < 0)
1175                         return r;
1176                 if (r > 0 && startswith(v, "systemd-boot ")) {
1177                         r = unlinkat(dirfd(d), de->d_name, 0);
1178                         if (r < 0)
1179                                 return log_error_errno(errno, "Failed to remove \"%s/%s\": %m", p, de->d_name);
1180
1181                         log_info("Removed \"%s/%s\".", p, de->d_name);
1182                 }
1183
1184                 c++;
1185         }
1186
1187         return c;
1188 }
1189
1190 static int rmdir_one(const char *prefix, const char *suffix) {
1191         const char *p;
1192
1193         p = prefix_roota(prefix, suffix);
1194         if (rmdir(p) < 0) {
1195                 bool ignore = IN_SET(errno, ENOENT, ENOTEMPTY);
1196
1197                 log_full_errno(ignore ? LOG_DEBUG : LOG_ERR, errno,
1198                                "Failed to remove directory \"%s\": %m", p);
1199                 if (!ignore)
1200                         return -errno;
1201         } else
1202                 log_info("Removed \"%s\".", p);
1203
1204         return 0;
1205 }
1206
1207 static int remove_subdirs(const char *root, const char *const *subdirs) {
1208         int r, q;
1209
1210         /* We use recursion here to destroy the directories in reverse order. Which should be safe given how
1211          * short the array is. */
1212
1213         if (!subdirs[0]) /* A the end of the list */
1214                 return 0;
1215
1216         r = remove_subdirs(root, subdirs + 1);
1217         q = rmdir_one(root, subdirs[0]);
1218
1219         return r < 0 ? r : q;
1220 }
1221
1222 static int remove_entry_directory(const char *root) {
1223         assert(root);
1224         assert(arg_make_entry_directory >= 0);
1225
1226         if (!arg_make_entry_directory || !arg_entry_token)
1227                 return 0;
1228
1229         return rmdir_one(root, arg_entry_token);
1230 }
1231
1232 static int remove_binaries(const char *esp_path) {
1233         const char *p;
1234         int r, q;
1235
1236         p = prefix_roota(esp_path, "/EFI/systemd");
1237         r = rm_rf(p, REMOVE_ROOT|REMOVE_PHYSICAL);
1238
1239         q = remove_boot_efi(esp_path);
1240         if (q < 0 && r == 0)
1241                 r = q;
1242
1243         return r;
1244 }
1245
1246 static int remove_file(const char *root, const char *file) {
1247         const char *p;
1248
1249         assert(root);
1250         assert(file);
1251
1252         p = prefix_roota(root, file);
1253         if (unlink(p) < 0) {
1254                 log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_ERR, errno,
1255                                "Failed to unlink file \"%s\": %m", p);
1256
1257                 return errno == ENOENT ? 0 : -errno;
1258         }
1259
1260         log_info("Removed \"%s\".", p);
1261         return 1;
1262 }
1263
1264 static int remove_variables(sd_id128_t uuid, const char *path, bool in_order) {
1265         uint16_t slot;
1266         int r;
1267
1268         if (!is_efi_boot())
1269                 return 0;
1270
1271         r = find_slot(uuid, path, &slot);
1272         if (r != 1)
1273                 return 0;
1274
1275         r = efi_remove_boot_option(slot);
1276         if (r < 0)
1277                 return r;
1278
1279         if (in_order)
1280                 return remove_from_order(slot);
1281
1282         return 0;
1283 }
1284
1285 static int remove_loader_variables(void) {
1286         int r = 0;
1287
1288         /* Remove all persistent loader variables we define */
1289
1290         FOREACH_STRING(var,
1291                        EFI_LOADER_VARIABLE(LoaderConfigTimeout),
1292                        EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot),
1293                        EFI_LOADER_VARIABLE(LoaderEntryDefault),
1294                        EFI_LOADER_VARIABLE(LoaderEntryOneShot),
1295                        EFI_LOADER_VARIABLE(LoaderSystemToken)){
1296
1297                 int q;
1298
1299                 q = efi_set_variable(var, NULL, 0);
1300                 if (q == -ENOENT)
1301                         continue;
1302                 if (q < 0) {
1303                         log_warning_errno(q, "Failed to remove EFI variable %s: %m", var);
1304                         if (r >= 0)
1305                                 r = q;
1306                 } else
1307                         log_info("Removed EFI variable %s.", var);
1308         }
1309
1310         return r;
1311 }
1312
1313 static int install_loader_config(const char *esp_path) {
1314         _cleanup_(unlink_and_freep) char *t = NULL;
1315         _cleanup_fclose_ FILE *f = NULL;
1316         const char *p;
1317         int r;
1318
1319         assert(arg_make_entry_directory >= 0);
1320
1321         p = prefix_roota(esp_path, "/loader/loader.conf");
1322         if (access(p, F_OK) >= 0) /* Silently skip creation if the file already exists (early check) */
1323                 return 0;
1324
1325         r = fopen_tmpfile_linkable(p, O_WRONLY|O_CLOEXEC, &t, &f);
1326         if (r < 0)
1327                 return log_error_errno(r, "Failed to open \"%s\" for writing: %m", p);
1328
1329         fprintf(f, "#timeout 3\n"
1330                    "#console-mode keep\n");
1331
1332         if (arg_make_entry_directory) {
1333                 assert(arg_entry_token);
1334                 fprintf(f, "default %s-*\n", arg_entry_token);
1335         }
1336
1337         r = flink_tmpfile(f, t, p);
1338         if (r == -EEXIST)
1339                 return 0; /* Silently skip creation if the file exists now (recheck) */
1340         if (r < 0)
1341                 return log_error_errno(r, "Failed to move \"%s\" into place: %m", p);
1342
1343         t = mfree(t);
1344         return 1;
1345 }
1346
1347 static int install_loader_specification(const char *root) {
1348         _cleanup_(unlink_and_freep) char *t = NULL;
1349         _cleanup_fclose_ FILE *f = NULL;
1350         _cleanup_free_ char *p = NULL;
1351         int r;
1352
1353         p = path_join(root, "/loader/entries.srel");
1354         if (!p)
1355                 return log_oom();
1356
1357         if (access(p, F_OK) >= 0) /* Silently skip creation if the file already exists (early check) */
1358                 return 0;
1359
1360         r = fopen_tmpfile_linkable(p, O_WRONLY|O_CLOEXEC, &t, &f);
1361         if (r < 0)
1362                 return log_error_errno(r, "Failed to open \"%s\" for writing: %m", p);
1363
1364         fprintf(f, "type1\n");
1365
1366         r = flink_tmpfile(f, t, p);
1367         if (r == -EEXIST)
1368                 return 0; /* Silently skip creation if the file exists now (recheck) */
1369         if (r < 0)
1370                 return log_error_errno(r, "Failed to move \"%s\" into place: %m", p);
1371
1372         t = mfree(t);
1373         return 1;
1374 }
1375
1376 static int install_entry_directory(const char *root) {
1377         assert(root);
1378         assert(arg_make_entry_directory >= 0);
1379
1380         if (!arg_make_entry_directory)
1381                 return 0;
1382
1383         assert(arg_entry_token);
1384         return mkdir_one(root, arg_entry_token);
1385 }
1386
1387 static int install_entry_token(void) {
1388         int r;
1389
1390         assert(arg_make_entry_directory >= 0);
1391         assert(arg_entry_token);
1392
1393         /* Let's save the used entry token in /etc/kernel/entry-token if we used it to create the entry
1394          * directory, or if anything else but the machine ID */
1395
1396         if (!arg_make_entry_directory && arg_entry_token_type == ARG_ENTRY_TOKEN_MACHINE_ID)
1397                 return 0;
1398
1399         r = write_string_file("/etc/kernel/entry-token", arg_entry_token, WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_ATOMIC|WRITE_STRING_FILE_MKDIR_0755);
1400         if (r < 0)
1401                 return log_error_errno(r, "Failed to write entry token '%s' to /etc/kernel/entry-token", arg_entry_token);
1402
1403         return 0;
1404 }
1405
1406 static int help(int argc, char *argv[], void *userdata) {
1407         _cleanup_free_ char *link = NULL;
1408         int r;
1409
1410         r = terminal_urlify_man("bootctl", "1", &link);
1411         if (r < 0)
1412                 return log_oom();
1413
1414         printf("%1$s  [OPTIONS...] COMMAND ...\n"
1415                "\n%5$sControl EFI firmware boot settings and manage boot loader.%6$s\n"
1416                "\n%3$sGeneric EFI Firmware/Boot Loader Commands:%4$s\n"
1417                "  status              Show status of installed boot loader and EFI variables\n"
1418                "  reboot-to-firmware [BOOL]\n"
1419                "                      Query or set reboot-to-firmware EFI flag\n"
1420                "  systemd-efi-options [STRING]\n"
1421                "                      Query or set system options string in EFI variable\n"
1422                "\n%3$sBoot Loader Specification Commands:%4$s\n"
1423                "  list                List boot loader entries\n"
1424                "  set-default ID      Set default boot loader entry\n"
1425                "  set-oneshot ID      Set default boot loader entry, for next boot only\n"
1426                "  set-timeout SECONDS Set the menu timeout\n"
1427                "  set-timeout-oneshot SECONDS\n"
1428                "                      Set the menu timeout for the next boot only\n"
1429                "\n%3$ssystemd-boot Commands:%4$s\n"
1430                "  install             Install systemd-boot to the ESP and EFI variables\n"
1431                "  update              Update systemd-boot in the ESP and EFI variables\n"
1432                "  remove              Remove systemd-boot from the ESP and EFI variables\n"
1433                "  is-installed        Test whether systemd-boot is installed in the ESP\n"
1434                "  random-seed         Initialize random seed in ESP and EFI variables\n"
1435                "\n%3$sOptions:%4$s\n"
1436                "  -h --help            Show this help\n"
1437                "     --version         Print version\n"
1438                "     --esp-path=PATH   Path to the EFI System Partition (ESP)\n"
1439                "     --boot-path=PATH  Path to the $BOOT partition\n"
1440                "  -p --print-esp-path  Print path to the EFI System Partition\n"
1441                "  -x --print-boot-path Print path to the $BOOT partition\n"
1442                "     --no-variables    Don't touch EFI variables\n"
1443                "     --no-pager        Do not pipe output into a pager\n"
1444                "     --graceful        Don't fail when the ESP cannot be found or EFI\n"
1445                "                       variables cannot be written\n"
1446                "     --make-entry-directory=yes|no|auto\n"
1447                "                       Create $BOOT/ENTRY-TOKEN/ directory\n"
1448                "     --entry-token=machine-id|os-id|os-image-id|auto|literal:…\n"
1449                "                       Entry token to use for this installation\n"
1450                "     --json=pretty|short|off\n"
1451                "                       Generate JSON output\n"
1452                "\nSee the %2$s for details.\n",
1453                program_invocation_short_name,
1454                link,
1455                ansi_underline(),
1456                ansi_normal(),
1457                ansi_highlight(),
1458                ansi_normal());
1459
1460         return 0;
1461 }
1462
1463 static int parse_argv(int argc, char *argv[]) {
1464         enum {
1465                 ARG_ESP_PATH = 0x100,
1466                 ARG_BOOT_PATH,
1467                 ARG_VERSION,
1468                 ARG_NO_VARIABLES,
1469                 ARG_NO_PAGER,
1470                 ARG_GRACEFUL,
1471                 ARG_MAKE_ENTRY_DIRECTORY,
1472                 ARG_ENTRY_TOKEN,
1473                 ARG_JSON,
1474         };
1475
1476         static const struct option options[] = {
1477                 { "help",                      no_argument,       NULL, 'h'                           },
1478                 { "version",                   no_argument,       NULL, ARG_VERSION                   },
1479                 { "esp-path",                  required_argument, NULL, ARG_ESP_PATH                  },
1480                 { "path",                      required_argument, NULL, ARG_ESP_PATH                  }, /* Compatibility alias */
1481                 { "boot-path",                 required_argument, NULL, ARG_BOOT_PATH                 },
1482                 { "print-esp-path",            no_argument,       NULL, 'p'                           },
1483                 { "print-path",                no_argument,       NULL, 'p'                           }, /* Compatibility alias */
1484                 { "print-boot-path",           no_argument,       NULL, 'x'                           },
1485                 { "no-variables",              no_argument,       NULL, ARG_NO_VARIABLES              },
1486                 { "no-pager",                  no_argument,       NULL, ARG_NO_PAGER                  },
1487                 { "graceful",                  no_argument,       NULL, ARG_GRACEFUL                  },
1488                 { "make-entry-directory",      required_argument, NULL, ARG_MAKE_ENTRY_DIRECTORY      },
1489                 { "make-machine-id-directory", required_argument, NULL, ARG_MAKE_ENTRY_DIRECTORY      }, /* Compatibility alias */
1490                 { "entry-token",               required_argument, NULL, ARG_ENTRY_TOKEN               },
1491                 { "json",                      required_argument, NULL, ARG_JSON                      },
1492                 {}
1493         };
1494
1495         int c, r;
1496         bool b;
1497
1498         assert(argc >= 0);
1499         assert(argv);
1500
1501         while ((c = getopt_long(argc, argv, "hpx", options, NULL)) >= 0)
1502                 switch (c) {
1503
1504                 case 'h':
1505                         help(0, NULL, NULL);
1506                         return 0;
1507
1508                 case ARG_VERSION:
1509                         return version();
1510
1511                 case ARG_ESP_PATH:
1512                         r = free_and_strdup(&arg_esp_path, optarg);
1513                         if (r < 0)
1514                                 return log_oom();
1515                         break;
1516
1517                 case ARG_BOOT_PATH:
1518                         r = free_and_strdup(&arg_xbootldr_path, optarg);
1519                         if (r < 0)
1520                                 return log_oom();
1521                         break;
1522
1523                 case 'p':
1524                         if (arg_print_dollar_boot_path)
1525                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1526                                                        "--print-boot-path/-x cannot be combined with --print-esp-path/-p");
1527                         arg_print_esp_path = true;
1528                         break;
1529
1530                 case 'x':
1531                         if (arg_print_esp_path)
1532                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1533                                                        "--print-boot-path/-x cannot be combined with --print-esp-path/-p");
1534                         arg_print_dollar_boot_path = true;
1535                         break;
1536
1537                 case ARG_NO_VARIABLES:
1538                         arg_touch_variables = false;
1539                         break;
1540
1541                 case ARG_NO_PAGER:
1542                         arg_pager_flags |= PAGER_DISABLE;
1543                         break;
1544
1545                 case ARG_GRACEFUL:
1546                         arg_graceful = true;
1547                         break;
1548
1549                 case ARG_ENTRY_TOKEN: {
1550                         const char *e;
1551
1552                         if (streq(optarg, "machine-id")) {
1553                                 arg_entry_token_type = ARG_ENTRY_TOKEN_MACHINE_ID;
1554                                 arg_entry_token = mfree(arg_entry_token);
1555                         } else if (streq(optarg, "os-image-id")) {
1556                                 arg_entry_token_type = ARG_ENTRY_TOKEN_OS_IMAGE_ID;
1557                                 arg_entry_token = mfree(arg_entry_token);
1558                         } else if (streq(optarg, "os-id")) {
1559                                 arg_entry_token_type = ARG_ENTRY_TOKEN_OS_ID;
1560                                 arg_entry_token = mfree(arg_entry_token);
1561                         } else if ((e = startswith(optarg, "literal:"))) {
1562                                 arg_entry_token_type = ARG_ENTRY_TOKEN_LITERAL;
1563
1564                                 r = free_and_strdup_warn(&arg_entry_token, e);
1565                                 if (r < 0)
1566                                         return r;
1567                         } else
1568                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1569                                                        "Unexpected parameter for --entry-token=: %s", optarg);
1570
1571                         break;
1572                 }
1573
1574                 case ARG_MAKE_ENTRY_DIRECTORY:
1575                         if (streq(optarg, "auto"))  /* retained for backwards compatibility */
1576                                 arg_make_entry_directory = -1; /* yes if machine-id is permanent */
1577                         else {
1578                                 r = parse_boolean_argument("--make-entry-directory=", optarg, &b);
1579                                 if (r < 0)
1580                                         return r;
1581
1582                                 arg_make_entry_directory = b;
1583                         }
1584                         break;
1585
1586                 case ARG_JSON:
1587                         r = parse_json_argument(optarg, &arg_json_format_flags);
1588                         if (r <= 0)
1589                                 return r;
1590
1591                         break;
1592
1593                 case '?':
1594                         return -EINVAL;
1595
1596                 default:
1597                         assert_not_reached();
1598                 }
1599
1600         return 1;
1601 }
1602
1603 static void read_efi_var(const char *variable, char **ret) {
1604         int r;
1605
1606         r = efi_get_variable_string(variable, ret);
1607         if (r < 0 && r != -ENOENT)
1608                 log_warning_errno(r, "Failed to read EFI variable %s: %m", variable);
1609 }
1610
1611 static void print_yes_no_line(bool first, bool good, const char *name) {
1612         printf("%s%s %s\n",
1613                first ? "     Features: " : "               ",
1614                COLOR_MARK_BOOL(good),
1615                name);
1616 }
1617
1618 static int are_we_installed(const char *esp_path) {
1619         int r;
1620
1621         /* Tests whether systemd-boot is installed. It's not obvious what to use as check here: we could
1622          * check EFI variables, we could check what binary /EFI/BOOT/BOOT*.EFI points to, or whether the
1623          * loader entries directory exists. Here we opted to check whether /EFI/systemd/ is non-empty, which
1624          * should be a suitable and very minimal check for a number of reasons:
1625          *
1626          *  → The check is architecture independent (i.e. we check if any systemd-boot loader is installed,
1627          *    not a specific one.)
1628          *
1629          *  → It doesn't assume we are the only boot loader (i.e doesn't check if we own the main
1630          *    /EFI/BOOT/BOOT*.EFI fallback binary.
1631          *
1632          *  → It specifically checks for systemd-boot, not for other boot loaders (which a check for
1633          *    /boot/loader/entries would do). */
1634
1635         _cleanup_free_ char *p = path_join(esp_path, "/EFI/systemd/");
1636         if (!p)
1637                 return log_oom();
1638
1639         log_debug("Checking whether %s contains any files…", p);
1640         r = dir_is_empty(p);
1641         if (r < 0 && r != -ENOENT)
1642                 return log_error_errno(r, "Failed to check whether %s contains any files: %m", p);
1643
1644         return r == 0;
1645 }
1646
1647 static int verb_status(int argc, char *argv[], void *userdata) {
1648         sd_id128_t esp_uuid = SD_ID128_NULL, xbootldr_uuid = SD_ID128_NULL;
1649         dev_t esp_devid = 0, xbootldr_devid = 0;
1650         int r, k;
1651
1652         r = acquire_esp(/* unprivileged_mode= */ geteuid() != 0, /* graceful= */ false, NULL, NULL, NULL, &esp_uuid, &esp_devid);
1653         if (arg_print_esp_path) {
1654                 if (r == -EACCES) /* If we couldn't acquire the ESP path, log about access errors (which is the only
1655                                    * error the find_esp_and_warn() won't log on its own) */
1656                         return log_error_errno(r, "Failed to determine ESP location: %m");
1657                 if (r < 0)
1658                         return r;
1659
1660                 puts(arg_esp_path);
1661         }
1662
1663         r = acquire_xbootldr(/* unprivileged_mode= */ geteuid() != 0, &xbootldr_uuid, &xbootldr_devid);
1664         if (arg_print_dollar_boot_path) {
1665                 if (r == -EACCES)
1666                         return log_error_errno(r, "Failed to determine XBOOTLDR partition: %m");
1667                 if (r < 0)
1668                         return r;
1669
1670                 const char *path = arg_dollar_boot_path();
1671                 if (!path)
1672                         return log_error_errno(SYNTHETIC_ERRNO(EACCES), "Failed to determine XBOOTLDR location: %m");
1673
1674                 puts(path);
1675         }
1676
1677         if (arg_print_esp_path || arg_print_dollar_boot_path)
1678                 return 0;
1679
1680         r = 0; /* If we couldn't determine the path, then don't consider that a problem from here on, just
1681                 * show what we can show */
1682
1683         pager_open(arg_pager_flags);
1684
1685         if (is_efi_boot()) {
1686                 static const struct {
1687                         uint64_t flag;
1688                         const char *name;
1689                 } flags[] = {
1690                         { EFI_LOADER_FEATURE_BOOT_COUNTING,           "Boot counting"                         },
1691                         { EFI_LOADER_FEATURE_CONFIG_TIMEOUT,          "Menu timeout control"                  },
1692                         { EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT, "One-shot menu timeout control"         },
1693                         { EFI_LOADER_FEATURE_ENTRY_DEFAULT,           "Default entry control"                 },
1694                         { EFI_LOADER_FEATURE_ENTRY_ONESHOT,           "One-shot entry control"                },
1695                         { EFI_LOADER_FEATURE_XBOOTLDR,                "Support for XBOOTLDR partition"        },
1696                         { EFI_LOADER_FEATURE_RANDOM_SEED,             "Support for passing random seed to OS" },
1697                         { EFI_LOADER_FEATURE_LOAD_DRIVER,             "Load drop-in drivers"                  },
1698                 };
1699
1700                 _cleanup_free_ char *fw_type = NULL, *fw_info = NULL, *loader = NULL, *loader_path = NULL, *stub = NULL;
1701                 sd_id128_t loader_part_uuid = SD_ID128_NULL;
1702                 uint64_t loader_features = 0;
1703                 int have;
1704
1705                 read_efi_var(EFI_LOADER_VARIABLE(LoaderFirmwareType), &fw_type);
1706                 read_efi_var(EFI_LOADER_VARIABLE(LoaderFirmwareInfo), &fw_info);
1707                 read_efi_var(EFI_LOADER_VARIABLE(LoaderInfo), &loader);
1708                 read_efi_var(EFI_LOADER_VARIABLE(StubInfo), &stub);
1709                 read_efi_var(EFI_LOADER_VARIABLE(LoaderImageIdentifier), &loader_path);
1710                 (void) efi_loader_get_features(&loader_features);
1711
1712                 if (loader_path)
1713                         efi_tilt_backslashes(loader_path);
1714
1715                 k = efi_loader_get_device_part_uuid(&loader_part_uuid);
1716                 if (k < 0 && k != -ENOENT)
1717                         r = log_warning_errno(k, "Failed to read EFI variable LoaderDevicePartUUID: %m");
1718
1719                 SecureBootMode secure = efi_get_secure_boot_mode();
1720                 printf("System:\n");
1721                 printf("     Firmware: %s%s (%s)%s\n", ansi_highlight(), strna(fw_type), strna(fw_info), ansi_normal());
1722                 printf("  Secure Boot: %sd (%s)\n",
1723                        enable_disable(IN_SET(secure, SECURE_BOOT_USER, SECURE_BOOT_DEPLOYED)),
1724                        secure_boot_mode_to_string(secure));
1725                 printf(" TPM2 Support: %s\n", yes_no(efi_has_tpm2()));
1726
1727                 k = efi_get_reboot_to_firmware();
1728                 if (k > 0)
1729                         printf(" Boot into FW: %sactive%s\n", ansi_highlight_yellow(), ansi_normal());
1730                 else if (k == 0)
1731                         printf(" Boot into FW: supported\n");
1732                 else if (k == -EOPNOTSUPP)
1733                         printf(" Boot into FW: not supported\n");
1734                 else {
1735                         errno = -k;
1736                         printf(" Boot into FW: %sfailed%s (%m)\n", ansi_highlight_red(), ansi_normal());
1737                 }
1738                 printf("\n");
1739
1740                 printf("Current Boot Loader:\n");
1741                 printf("      Product: %s%s%s\n", ansi_highlight(), strna(loader), ansi_normal());
1742
1743                 for (size_t i = 0; i < ELEMENTSOF(flags); i++)
1744                         print_yes_no_line(i == 0, FLAGS_SET(loader_features, flags[i].flag), flags[i].name);
1745
1746                 sd_id128_t bootloader_esp_uuid;
1747                 bool have_bootloader_esp_uuid = efi_loader_get_device_part_uuid(&bootloader_esp_uuid) >= 0;
1748
1749                 print_yes_no_line(false, have_bootloader_esp_uuid, "Boot loader sets ESP information");
1750                 if (have_bootloader_esp_uuid && !sd_id128_equal(esp_uuid, bootloader_esp_uuid))
1751                         printf("WARNING: The boot loader reports a different ESP UUID than detected!\n");
1752
1753                 if (stub)
1754                         printf("         Stub: %s\n", stub);
1755                 if (!sd_id128_is_null(loader_part_uuid))
1756                         printf("          ESP: /dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR "\n",
1757                                SD_ID128_FORMAT_VAL(loader_part_uuid));
1758                 else
1759                         printf("          ESP: n/a\n");
1760                 printf("         File: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), strna(loader_path));
1761                 printf("\n");
1762
1763                 printf("Random Seed:\n");
1764                 have = access(EFIVAR_PATH(EFI_LOADER_VARIABLE(LoaderRandomSeed)), F_OK) >= 0;
1765                 printf(" Passed to OS: %s\n", yes_no(have));
1766                 have = access(EFIVAR_PATH(EFI_LOADER_VARIABLE(LoaderSystemToken)), F_OK) >= 0;
1767                 printf(" System Token: %s\n", have ? "set" : "not set");
1768
1769                 if (arg_esp_path) {
1770                         _cleanup_free_ char *p = NULL;
1771
1772                         p = path_join(arg_esp_path, "/loader/random-seed");
1773                         if (!p)
1774                                 return log_oom();
1775
1776                         have = access(p, F_OK) >= 0;
1777                         printf("       Exists: %s\n", yes_no(have));
1778                 }
1779
1780                 printf("\n");
1781         } else
1782                 printf("System:\n    Not booted with EFI\n\n");
1783
1784         if (arg_esp_path) {
1785                 k = status_binaries(arg_esp_path, esp_uuid);
1786                 if (k < 0)
1787                         r = k;
1788         }
1789
1790         if (is_efi_boot()) {
1791                 k = status_variables();
1792                 if (k < 0)
1793                         r = k;
1794         }
1795
1796         if (arg_esp_path || arg_xbootldr_path) {
1797                 _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
1798
1799                 k = boot_config_load_and_select(&config,
1800                                                 arg_esp_path, esp_devid,
1801                                                 arg_xbootldr_path, xbootldr_devid);
1802                 if (k < 0)
1803                         r = k;
1804                 else {
1805                         k = status_entries(&config,
1806                                            arg_esp_path, esp_uuid,
1807                                            arg_xbootldr_path, xbootldr_uuid);
1808                         if (k < 0)
1809                                 r = k;
1810                 }
1811         }
1812
1813         return r;
1814 }
1815
1816 static int verb_list(int argc, char *argv[], void *userdata) {
1817         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
1818         dev_t esp_devid = 0, xbootldr_devid = 0;
1819         int r;
1820
1821         /* If we lack privileges we invoke find_esp_and_warn() in "unprivileged mode" here, which does two
1822          * things: turn off logging about access errors and turn off potentially privileged device probing.
1823          * Here we're interested in the latter but not the former, hence request the mode, and log about
1824          * EACCES. */
1825
1826         r = acquire_esp(/* unprivileged_mode= */ geteuid() != 0, /* graceful= */ false, NULL, NULL, NULL, NULL, &esp_devid);
1827         if (r == -EACCES) /* We really need the ESP path for this call, hence also log about access errors */
1828                 return log_error_errno(r, "Failed to determine ESP location: %m");
1829         if (r < 0)
1830                 return r;
1831
1832         r = acquire_xbootldr(/* unprivileged_mode= */ geteuid() != 0, NULL, &xbootldr_devid);
1833         if (r == -EACCES)
1834                 return log_error_errno(r, "Failed to determine XBOOTLDR partition: %m");
1835         if (r < 0)
1836                 return r;
1837
1838         r = boot_config_load_and_select(&config, arg_esp_path, esp_devid, arg_xbootldr_path, xbootldr_devid);
1839         if (r < 0)
1840                 return r;
1841
1842         if (!FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) {
1843
1844                 pager_open(arg_pager_flags);
1845
1846                 for (size_t i = 0; i < config.n_entries; i++) {
1847                         _cleanup_free_ char *opts = NULL;
1848                         BootEntry *e = config.entries + i;
1849                         _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
1850
1851                         if (!strv_isempty(e->options)) {
1852                                 opts = strv_join(e->options, " ");
1853                                 if (!opts)
1854                                         return log_oom();
1855                         }
1856
1857                         r = json_build(&v, JSON_BUILD_OBJECT(
1858                                                        JSON_BUILD_PAIR_CONDITION(e->id, "id", JSON_BUILD_STRING(e->id)),
1859                                                        JSON_BUILD_PAIR_CONDITION(e->path, "path", JSON_BUILD_STRING(e->path)),
1860                                                        JSON_BUILD_PAIR_CONDITION(e->root, "root", JSON_BUILD_STRING(e->root)),
1861                                                        JSON_BUILD_PAIR_CONDITION(e->title, "title", JSON_BUILD_STRING(e->title)),
1862                                                        JSON_BUILD_PAIR_CONDITION(boot_entry_title(e), "showTitle", JSON_BUILD_STRING(boot_entry_title(e))),
1863                                                        JSON_BUILD_PAIR_CONDITION(e->sort_key, "sortKey", JSON_BUILD_STRING(e->sort_key)),
1864                                                        JSON_BUILD_PAIR_CONDITION(e->version, "version", JSON_BUILD_STRING(e->version)),
1865                                                        JSON_BUILD_PAIR_CONDITION(e->machine_id, "machineId", JSON_BUILD_STRING(e->machine_id)),
1866                                                        JSON_BUILD_PAIR_CONDITION(e->architecture, "architecture", JSON_BUILD_STRING(e->architecture)),
1867                                                        JSON_BUILD_PAIR_CONDITION(opts, "options", JSON_BUILD_STRING(opts)),
1868                                                        JSON_BUILD_PAIR_CONDITION(e->kernel, "linux", JSON_BUILD_STRING(e->kernel)),
1869                                                        JSON_BUILD_PAIR_CONDITION(e->efi, "efi", JSON_BUILD_STRING(e->efi)),
1870                                                        JSON_BUILD_PAIR_CONDITION(!strv_isempty(e->initrd), "initrd", JSON_BUILD_STRV(e->initrd)),
1871                                                        JSON_BUILD_PAIR_CONDITION(e->device_tree, "devicetree", JSON_BUILD_STRING(e->device_tree)),
1872                                                        JSON_BUILD_PAIR_CONDITION(!strv_isempty(e->device_tree_overlay), "devicetreeOverlay", JSON_BUILD_STRV(e->device_tree_overlay))));
1873                         if (r < 0)
1874                                 return log_oom();
1875
1876                         json_variant_dump(v, arg_json_format_flags, stdout, NULL);
1877                 }
1878
1879         } else if (config.n_entries == 0)
1880                 log_info("No boot loader entries found.");
1881         else {
1882                 pager_open(arg_pager_flags);
1883
1884                 printf("Boot Loader Entries:\n");
1885
1886                 for (size_t n = 0; n < config.n_entries; n++) {
1887                         r = boot_entry_show(
1888                                         config.entries + n,
1889                                         /* show_as_default= */  n == (size_t) config.default_entry,
1890                                         /* show_as_selected= */ n == (size_t) config.selected_entry,
1891                                         /* show_discovered= */  true);
1892                         if (r < 0)
1893                                 return r;
1894
1895                         if (n+1 < config.n_entries)
1896                                 putchar('\n');
1897                 }
1898         }
1899
1900         return 0;
1901 }
1902
1903 static int install_random_seed(const char *esp) {
1904         _cleanup_(unlink_and_freep) char *tmp = NULL;
1905         _cleanup_free_ void *buffer = NULL;
1906         _cleanup_free_ char *path = NULL;
1907         _cleanup_close_ int fd = -1;
1908         size_t sz, token_size;
1909         ssize_t n;
1910         int r;
1911
1912         assert(esp);
1913
1914         path = path_join(esp, "/loader/random-seed");
1915         if (!path)
1916                 return log_oom();
1917
1918         sz = random_pool_size();
1919
1920         buffer = malloc(sz);
1921         if (!buffer)
1922                 return log_oom();
1923
1924         r = genuine_random_bytes(buffer, sz, RANDOM_BLOCK);
1925         if (r < 0)
1926                 return log_error_errno(r, "Failed to acquire random seed: %m");
1927
1928         /* Normally create_subdirs() should already have created everything we need, but in case "bootctl
1929          * random-seed" is called we want to just create the minimum we need for it, and not the full
1930          * list. */
1931         r = mkdir_parents(path, 0755);
1932         if (r < 0)
1933                 return log_error_errno(r, "Failed to create parent directory for %s: %m", path);
1934
1935         r = tempfn_random(path, "bootctl", &tmp);
1936         if (r < 0)
1937                 return log_oom();
1938
1939         fd = open(tmp, O_CREAT|O_EXCL|O_NOFOLLOW|O_NOCTTY|O_WRONLY|O_CLOEXEC, 0600);
1940         if (fd < 0) {
1941                 tmp = mfree(tmp);
1942                 return log_error_errno(fd, "Failed to open random seed file for writing: %m");
1943         }
1944
1945         n = write(fd, buffer, sz);
1946         if (n < 0)
1947                 return log_error_errno(errno, "Failed to write random seed file: %m");
1948         if ((size_t) n != sz)
1949                 return log_error_errno(SYNTHETIC_ERRNO(EIO), "Short write while writing random seed file.");
1950
1951         if (rename(tmp, path) < 0)
1952                 return log_error_errno(r, "Failed to move random seed file into place: %m");
1953
1954         tmp = mfree(tmp);
1955
1956         log_info("Random seed file %s successfully written (%zu bytes).", path, sz);
1957
1958         if (!arg_touch_variables)
1959                 return 0;
1960
1961         if (!is_efi_boot()) {
1962                 log_notice("Not booted with EFI, skipping EFI variable setup.");
1963                 return 0;
1964         }
1965
1966         r = getenv_bool("SYSTEMD_WRITE_SYSTEM_TOKEN");
1967         if (r < 0) {
1968                 if (r != -ENXIO)
1969                          log_warning_errno(r, "Failed to parse $SYSTEMD_WRITE_SYSTEM_TOKEN, ignoring.");
1970
1971                 if (detect_vm() > 0) {
1972                         /* Let's not write a system token if we detect we are running in a VM
1973                          * environment. Why? Our default security model for the random seed uses the system
1974                          * token as a mechanism to ensure we are not vulnerable to golden master sloppiness
1975                          * issues, i.e. that people initialize the random seed file, then copy the image to
1976                          * many systems and end up with the same random seed in each that is assumed to be
1977                          * valid but in reality is the same for all machines. By storing a system token in
1978                          * the EFI variable space we can make sure that even though the random seeds on disk
1979                          * are all the same they will be different on each system under the assumption that
1980                          * the EFI variable space is maintained separate from the random seed storage. That
1981                          * is generally the case on physical systems, as the ESP is stored on persistent
1982                          * storage, and the EFI variables in NVRAM. However in virtualized environments this
1983                          * is generally not true: the EFI variable set is typically stored along with the
1984                          * disk image itself. For example, using the OVMF EFI firmware the EFI variables are
1985                          * stored in a file in the ESP itself. */
1986
1987                         log_notice("Not installing system token, since we are running in a virtualized environment.");
1988                         return 0;
1989                 }
1990         } else if (r == 0) {
1991                 log_notice("Not writing system token, because $SYSTEMD_WRITE_SYSTEM_TOKEN is set to false.");
1992                 return 0;
1993         }
1994
1995         r = efi_get_variable(EFI_LOADER_VARIABLE(LoaderSystemToken), NULL, NULL, &token_size);
1996         if (r == -ENODATA)
1997                 log_debug_errno(r, "LoaderSystemToken EFI variable is invalid (too short?), replacing.");
1998         else if (r < 0) {
1999                 if (r != -ENOENT)
2000                         return log_error_errno(r, "Failed to test system token validity: %m");
2001         } else {
2002                 if (token_size >= sz) {
2003                         /* Let's avoid writes if we can, and initialize this only once. */
2004                         log_debug("System token already written, not updating.");
2005                         return 0;
2006                 }
2007
2008                 log_debug("Existing system token size (%zu) does not match our expectations (%zu), replacing.", token_size, sz);
2009         }
2010
2011         r = genuine_random_bytes(buffer, sz, RANDOM_BLOCK);
2012         if (r < 0)
2013                 return log_error_errno(r, "Failed to acquire random seed: %m");
2014
2015         /* Let's write this variable with an umask in effect, so that unprivileged users can't see the token
2016          * and possibly get identification information or too much insight into the kernel's entropy pool
2017          * state. */
2018         RUN_WITH_UMASK(0077) {
2019                 r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderSystemToken), buffer, sz);
2020                 if (r < 0) {
2021                         if (!arg_graceful)
2022                                 return log_error_errno(r, "Failed to write 'LoaderSystemToken' EFI variable: %m");
2023
2024                         if (r == -EINVAL)
2025                                 log_warning_errno(r, "Unable to write 'LoaderSystemToken' EFI variable (firmware problem?), ignoring: %m");
2026                         else
2027                                 log_warning_errno(r, "Unable to write 'LoaderSystemToken' EFI variable, ignoring: %m");
2028                 } else
2029                         log_info("Successfully initialized system token in EFI variable with %zu bytes.", sz);
2030         }
2031
2032         return 0;
2033 }
2034
2035 static int sync_everything(void) {
2036         int ret = 0, k;
2037
2038         if (arg_esp_path) {
2039                 k = syncfs_path(AT_FDCWD, arg_esp_path);
2040                 if (k < 0)
2041                         ret = log_error_errno(k, "Failed to synchronize the ESP '%s': %m", arg_esp_path);
2042         }
2043
2044         if (arg_xbootldr_path) {
2045                 k = syncfs_path(AT_FDCWD, arg_xbootldr_path);
2046                 if (k < 0)
2047                         ret = log_error_errno(k, "Failed to synchronize $BOOT '%s': %m", arg_xbootldr_path);
2048         }
2049
2050         return ret;
2051 }
2052
2053 static int verb_install(int argc, char *argv[], void *userdata) {
2054         sd_id128_t uuid = SD_ID128_NULL;
2055         uint64_t pstart = 0, psize = 0;
2056         uint32_t part = 0;
2057         bool install, graceful;
2058         int r;
2059
2060         /* Invoked for both "update" and "install" */
2061
2062         install = streq(argv[0], "install");
2063         graceful = !install && arg_graceful; /* support graceful mode for updates */
2064
2065         r = acquire_esp(/* unprivileged_mode= */ false, graceful, &part, &pstart, &psize, &uuid, NULL);
2066         if (graceful && r == -ENOKEY)
2067                 return 0; /* If --graceful is specified and we can't find an ESP, handle this cleanly */
2068         if (r < 0)
2069                 return r;
2070
2071         if (!install) {
2072                 /* If we are updating, don't do anything if sd-boot wasn't actually installed. */
2073                 r = are_we_installed(arg_esp_path);
2074                 if (r < 0)
2075                         return r;
2076                 if (r == 0) {
2077                         log_debug("Skipping update because sd-boot is not installed in the ESP.");
2078                         return 0;
2079                 }
2080         }
2081
2082         r = acquire_xbootldr(/* unprivileged_mode= */ false, NULL, NULL);
2083         if (r < 0)
2084                 return r;
2085
2086         r = settle_make_entry_directory();
2087         if (r < 0)
2088                 return r;
2089
2090         RUN_WITH_UMASK(0002) {
2091                 if (install) {
2092                         /* Don't create any of these directories when we are just updating. When we update
2093                          * we'll drop-in our files (unless there are newer ones already), but we won't create
2094                          * the directories for them in the first place. */
2095                         r = create_subdirs(arg_esp_path, esp_subdirs);
2096                         if (r < 0)
2097                                 return r;
2098
2099                         r = create_subdirs(arg_dollar_boot_path(), dollar_boot_subdirs);
2100                         if (r < 0)
2101                                 return r;
2102                 }
2103
2104                 r = install_binaries(arg_esp_path, install);
2105                 if (r < 0)
2106                         return r;
2107
2108                 if (install) {
2109                         r = install_loader_config(arg_esp_path);
2110                         if (r < 0)
2111                                 return r;
2112
2113                         r = install_entry_directory(arg_dollar_boot_path());
2114                         if (r < 0)
2115                                 return r;
2116
2117                         r = install_entry_token();
2118                         if (r < 0)
2119                                 return r;
2120
2121                         r = install_random_seed(arg_esp_path);
2122                         if (r < 0)
2123                                 return r;
2124                 }
2125
2126                 r = install_loader_specification(arg_dollar_boot_path());
2127                 if (r < 0)
2128                         return r;
2129         }
2130
2131         (void) sync_everything();
2132
2133         if (arg_touch_variables)
2134                 r = install_variables(arg_esp_path,
2135                                       part, pstart, psize, uuid,
2136                                       "/EFI/systemd/systemd-boot" EFI_MACHINE_TYPE_NAME ".efi",
2137                                       install);
2138
2139         return r;
2140 }
2141
2142 static int verb_remove(int argc, char *argv[], void *userdata) {
2143         sd_id128_t uuid = SD_ID128_NULL;
2144         int r, q;
2145
2146         r = acquire_esp(/* unprivileged_mode= */ false, /* graceful= */ false, NULL, NULL, NULL, &uuid, NULL);
2147         if (r < 0)
2148                 return r;
2149
2150         r = acquire_xbootldr(/* unprivileged_mode= */ false, NULL, NULL);
2151         if (r < 0)
2152                 return r;
2153
2154         r = settle_make_entry_directory();
2155         if (r < 0)
2156                 return r;
2157
2158         r = remove_binaries(arg_esp_path);
2159
2160         q = remove_file(arg_esp_path, "/loader/loader.conf");
2161         if (q < 0 && r >= 0)
2162                 r = q;
2163
2164         q = remove_file(arg_esp_path, "/loader/random-seed");
2165         if (q < 0 && r >= 0)
2166                 r = q;
2167
2168         q = remove_file(arg_esp_path, "/loader/entries.srel");
2169         if (q < 0 && r >= 0)
2170                 r = q;
2171
2172         q = remove_subdirs(arg_esp_path, esp_subdirs);
2173         if (q < 0 && r >= 0)
2174                 r = q;
2175
2176         q = remove_subdirs(arg_esp_path, dollar_boot_subdirs);
2177         if (q < 0 && r >= 0)
2178                 r = q;
2179
2180         q = remove_entry_directory(arg_esp_path);
2181         if (q < 0 && r >= 0)
2182                 r = q;
2183
2184         if (arg_xbootldr_path) {
2185                 /* Remove a subset of these also from the XBOOTLDR partition if it exists */
2186
2187                 q = remove_file(arg_xbootldr_path, "/loader/entries.srel");
2188                 if (q < 0 && r >= 0)
2189                         r = q;
2190
2191                 q = remove_subdirs(arg_xbootldr_path, dollar_boot_subdirs);
2192                 if (q < 0 && r >= 0)
2193                         r = q;
2194
2195                 q = remove_entry_directory(arg_xbootldr_path);
2196                 if (q < 0 && r >= 0)
2197                         r = q;
2198         }
2199
2200         (void) sync_everything();
2201
2202         if (!arg_touch_variables)
2203                 return r;
2204
2205         q = remove_variables(uuid, "/EFI/systemd/systemd-boot" EFI_MACHINE_TYPE_NAME ".efi", true);
2206         if (q < 0 && r >= 0)
2207                 r = q;
2208
2209         q = remove_loader_variables();
2210         if (q < 0 && r >= 0)
2211                 r = q;
2212
2213         return r;
2214 }
2215
2216 static int verb_is_installed(int argc, char *argv[], void *userdata) {
2217         int r;
2218
2219         r = acquire_esp(/* privileged_mode= */ false, /* graceful= */ false, NULL, NULL, NULL, NULL, NULL);
2220         if (r < 0)
2221                 return r;
2222
2223         r = are_we_installed(arg_esp_path);
2224         if (r < 0)
2225                 return r;
2226
2227         if (r > 0) {
2228                 puts("yes");
2229                 return EXIT_SUCCESS;
2230         } else {
2231                 puts("no");
2232                 return EXIT_FAILURE;
2233         }
2234 }
2235
2236 static int parse_timeout(const char *arg1, char16_t **ret_timeout, size_t *ret_timeout_size) {
2237         char utf8[DECIMAL_STR_MAX(usec_t)];
2238         char16_t *encoded;
2239         usec_t timeout;
2240         int r;
2241
2242         assert(arg1);
2243         assert(ret_timeout);
2244         assert(ret_timeout_size);
2245
2246         if (streq(arg1, "menu-force"))
2247                 timeout = USEC_INFINITY;
2248         else if (streq(arg1, "menu-hidden"))
2249                 timeout = 0;
2250         else {
2251                 r = parse_time(arg1, &timeout, USEC_PER_SEC);
2252                 if (r < 0)
2253                         return log_error_errno(r, "Failed to parse timeout '%s': %m", arg1);
2254                 if (timeout != USEC_INFINITY && timeout > UINT32_MAX * USEC_PER_SEC)
2255                         log_warning("Timeout is too long and will be treated as 'menu-force' instead.");
2256         }
2257
2258         xsprintf(utf8, USEC_FMT, MIN(timeout / USEC_PER_SEC, UINT32_MAX));
2259
2260         encoded = utf8_to_utf16(utf8, strlen(utf8));
2261         if (!encoded)
2262                 return log_oom();
2263
2264         *ret_timeout = encoded;
2265         *ret_timeout_size = char16_strlen(encoded) * 2 + 2;
2266         return 0;
2267 }
2268
2269 static int parse_loader_entry_target_arg(const char *arg1, char16_t **ret_target, size_t *ret_target_size) {
2270         char16_t *encoded = NULL;
2271         int r;
2272
2273         assert(arg1);
2274         assert(ret_target);
2275         assert(ret_target_size);
2276
2277         if (streq(arg1, "@current")) {
2278                 r = efi_get_variable(EFI_LOADER_VARIABLE(LoaderEntrySelected), NULL, (void *) ret_target, ret_target_size);
2279                 if (r < 0)
2280                         return log_error_errno(r, "Failed to get EFI variable 'LoaderEntrySelected': %m");
2281
2282         } else if (streq(arg1, "@oneshot")) {
2283                 r = efi_get_variable(EFI_LOADER_VARIABLE(LoaderEntryOneShot), NULL, (void *) ret_target, ret_target_size);
2284                 if (r < 0)
2285                         return log_error_errno(r, "Failed to get EFI variable 'LoaderEntryOneShot': %m");
2286
2287         } else if (streq(arg1, "@default")) {
2288                 r = efi_get_variable(EFI_LOADER_VARIABLE(LoaderEntryDefault), NULL, (void *) ret_target, ret_target_size);
2289                 if (r < 0)
2290                         return log_error_errno(r, "Failed to get EFI variable 'LoaderEntryDefault': %m");
2291
2292         } else if (arg1[0] == '@' && !streq(arg1, "@saved"))
2293                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unsupported special entry identifier: %s", arg1);
2294         else {
2295                 encoded = utf8_to_utf16(arg1, strlen(arg1));
2296                 if (!encoded)
2297                         return log_oom();
2298
2299                 *ret_target = encoded;
2300                 *ret_target_size = char16_strlen(encoded) * 2 + 2;
2301         }
2302
2303         return 0;
2304 }
2305
2306 static int verb_set_efivar(int argc, char *argv[], void *userdata) {
2307         int r;
2308
2309         if (!is_efi_boot())
2310                 return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
2311                                        "Not booted with UEFI.");
2312
2313         if (access(EFIVAR_PATH(EFI_LOADER_VARIABLE(LoaderInfo)), F_OK) < 0) {
2314                 if (errno == ENOENT) {
2315                         log_error_errno(errno, "Not booted with a supported boot loader.");
2316                         return -EOPNOTSUPP;
2317                 }
2318
2319                 return log_error_errno(errno, "Failed to detect whether boot loader supports '%s' operation: %m", argv[0]);
2320         }
2321
2322         if (detect_container() > 0)
2323                 return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
2324                                        "'%s' operation not supported in a container.",
2325                                        argv[0]);
2326
2327         if (!arg_touch_variables)
2328                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
2329                                        "'%s' operation cannot be combined with --no-variables.",
2330                                        argv[0]);
2331
2332         const char *variable;
2333         int (* arg_parser)(const char *, char16_t **, size_t *);
2334
2335         if (streq(argv[0], "set-default")) {
2336                 variable = EFI_LOADER_VARIABLE(LoaderEntryDefault);
2337                 arg_parser = parse_loader_entry_target_arg;
2338         } else if (streq(argv[0], "set-oneshot")) {
2339                 variable = EFI_LOADER_VARIABLE(LoaderEntryOneShot);
2340                 arg_parser = parse_loader_entry_target_arg;
2341         } else if (streq(argv[0], "set-timeout")) {
2342                 variable = EFI_LOADER_VARIABLE(LoaderConfigTimeout);
2343                 arg_parser = parse_timeout;
2344         } else if (streq(argv[0], "set-timeout-oneshot")) {
2345                 variable = EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot);
2346                 arg_parser = parse_timeout;
2347         } else
2348                 assert_not_reached();
2349
2350         if (isempty(argv[1])) {
2351                 r = efi_set_variable(variable, NULL, 0);
2352                 if (r < 0 && r != -ENOENT)
2353                         return log_error_errno(r, "Failed to remove EFI variable '%s': %m", variable);
2354         } else {
2355                 _cleanup_free_ char16_t *value = NULL;
2356                 size_t value_size = 0;
2357
2358                 r = arg_parser(argv[1], &value, &value_size);
2359                 if (r < 0)
2360                         return r;
2361                 r = efi_set_variable(variable, value, value_size);
2362                 if (r < 0)
2363                         return log_error_errno(r, "Failed to update EFI variable '%s': %m", variable);
2364         }
2365
2366         return 0;
2367 }
2368
2369 static int verb_random_seed(int argc, char *argv[], void *userdata) {
2370         int r;
2371
2372         r = find_esp_and_warn(arg_esp_path, false, &arg_esp_path, NULL, NULL, NULL, NULL, NULL);
2373         if (r == -ENOKEY) {
2374                 /* find_esp_and_warn() doesn't warn about ENOKEY, so let's do that on our own */
2375                 if (!arg_graceful)
2376                         return log_error_errno(r, "Unable to find ESP.");
2377
2378                 log_notice("No ESP found, not initializing random seed.");
2379                 return 0;
2380         }
2381         if (r < 0)
2382                 return r;
2383
2384         r = install_random_seed(arg_esp_path);
2385         if (r < 0)
2386                 return r;
2387
2388         (void) sync_everything();
2389         return 0;
2390 }
2391
2392 static int verb_systemd_efi_options(int argc, char *argv[], void *userdata) {
2393         int r;
2394
2395         if (argc == 1) {
2396                 _cleanup_free_ char *line = NULL, *new = NULL;
2397
2398                 r = systemd_efi_options_variable(&line);
2399                 if (r == -ENODATA)
2400                         log_debug("No SystemdOptions EFI variable present in cache.");
2401                 else if (r < 0)
2402                         return log_error_errno(r, "Failed to read SystemdOptions EFI variable from cache: %m");
2403                 else
2404                         puts(line);
2405
2406                 r = systemd_efi_options_efivarfs_if_newer(&new);
2407                 if (r == -ENODATA) {
2408                         if (line)
2409                                 log_notice("Note: SystemdOptions EFI variable has been removed since boot.");
2410                 } else if (r < 0)
2411                         log_warning_errno(r, "Failed to check SystemdOptions EFI variable in efivarfs, ignoring: %m");
2412                 else if (new && !streq_ptr(line, new))
2413                         log_notice("Note: SystemdOptions EFI variable has been modified since boot. New value: %s",
2414                                    new);
2415         } else {
2416                 r = efi_set_variable_string(EFI_SYSTEMD_VARIABLE(SystemdOptions), argv[1]);
2417                 if (r < 0)
2418                         return log_error_errno(r, "Failed to set SystemdOptions EFI variable: %m");
2419         }
2420
2421         return 0;
2422 }
2423
2424 static int verb_reboot_to_firmware(int argc, char *argv[], void *userdata) {
2425         int r;
2426
2427         if (argc < 2) {
2428                 r = efi_get_reboot_to_firmware();
2429                 if (r > 0) {
2430                         puts("active");
2431                         return EXIT_SUCCESS; /* success */
2432                 }
2433                 if (r == 0) {
2434                         puts("supported");
2435                         return 1; /* recognizable error #1 */
2436                 }
2437                 if (r == -EOPNOTSUPP) {
2438                         puts("not supported");
2439                         return 2; /* recognizable error #2 */
2440                 }
2441
2442                 log_error_errno(r, "Failed to query reboot-to-firmware state: %m");
2443                 return 3; /* other kind of error */
2444         } else {
2445                 r = parse_boolean(argv[1]);
2446                 if (r < 0)
2447                         return log_error_errno(r, "Failed to parse argument: %s", argv[1]);
2448
2449                 r = efi_set_reboot_to_firmware(r);
2450                 if (r < 0)
2451                         return log_error_errno(r, "Failed to set reboot-to-firmware option: %m");
2452
2453                 return 0;
2454         }
2455 }
2456
2457 static int bootctl_main(int argc, char *argv[]) {
2458         static const Verb verbs[] = {
2459                 { "help",                VERB_ANY, VERB_ANY, 0,            help                     },
2460                 { "status",              VERB_ANY, 1,        VERB_DEFAULT, verb_status              },
2461                 { "install",             VERB_ANY, 1,        0,            verb_install             },
2462                 { "update",              VERB_ANY, 1,        0,            verb_install             },
2463                 { "remove",              VERB_ANY, 1,        0,            verb_remove              },
2464                 { "is-installed",        VERB_ANY, 1,        0,            verb_is_installed        },
2465                 { "list",                VERB_ANY, 1,        0,            verb_list                },
2466                 { "set-default",         2,        2,        0,            verb_set_efivar          },
2467                 { "set-oneshot",         2,        2,        0,            verb_set_efivar          },
2468                 { "set-timeout",         2,        2,        0,            verb_set_efivar          },
2469                 { "set-timeout-oneshot", 2,        2,        0,            verb_set_efivar          },
2470                 { "random-seed",         VERB_ANY, 1,        0,            verb_random_seed         },
2471                 { "systemd-efi-options", VERB_ANY, 2,        0,            verb_systemd_efi_options },
2472                 { "reboot-to-firmware",  VERB_ANY, 2,        0,            verb_reboot_to_firmware  },
2473                 {}
2474         };
2475
2476         return dispatch_verb(argc, argv, verbs, NULL);
2477 }
2478
2479 static int run(int argc, char *argv[]) {
2480         int r;
2481
2482         log_parse_environment();
2483         log_open();
2484
2485         /* If we run in a container, automatically turn off EFI file system access */
2486         if (detect_container() > 0)
2487                 arg_touch_variables = false;
2488
2489         r = parse_argv(argc, argv);
2490         if (r <= 0)
2491                 return r;
2492
2493         return bootctl_main(argc, argv);
2494 }
2495
2496 DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run);