/* SPDX-License-Identifier: LGPL-2.1+ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "sd-id128.h" #include "alloc-util.h" #include "blkid-util.h" #include "bootspec.h" #include "copy.h" #include "dirent-util.h" #include "efivars.h" #include "fd-util.h" #include "fileio.h" #include "fs-util.h" #include "locale-util.h" #include "parse-util.h" #include "rm-rf.h" #include "stat-util.h" #include "string-util.h" #include "strv.h" #include "terminal-util.h" #include "umask-util.h" #include "util.h" #include "verbs.h" #include "virt.h" static char *arg_path = NULL; static bool arg_print_path = false; static bool arg_touch_variables = true; static int acquire_esp( bool unprivileged_mode, uint32_t *ret_part, uint64_t *ret_pstart, uint64_t *ret_psize, sd_id128_t *ret_uuid) { char *np; int r; /* Find the ESP, and log about errors. Note that find_esp_and_warn() will log in all error cases on its own, * except for ENOKEY (which is good, we want to show our own message in that case, suggesting use of --path=) * and EACCESS (only when we request unprivileged mode; in this case we simply eat up the error here, so that * --list and --status work too, without noise about this). */ r = find_esp_and_warn(arg_path, unprivileged_mode, &np, ret_part, ret_pstart, ret_psize, ret_uuid); if (r == -ENOKEY) return log_error_errno(r, "Couldn't find EFI system partition. It is recommended to mount it to /boot or /efi.\n" "Alternatively, use --path= to specify path to mount point."); if (r < 0) return r; free_and_replace(arg_path, np); log_debug("Using EFI System Partition at %s.", arg_path); return 0; } /* search for "#### LoaderInfo: systemd-boot 218 ####" string inside the binary */ static int get_file_version(int fd, char **v) { struct stat st; char *buf; const char *s, *e; char *x = NULL; int r = 0; assert(fd >= 0); assert(v); if (fstat(fd, &st) < 0) return log_error_errno(errno, "Failed to stat EFI binary: %m"); if (st.st_size < 27) { *v = NULL; return 0; } buf = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0); if (buf == MAP_FAILED) return log_error_errno(errno, "Failed to memory map EFI binary: %m"); s = memmem(buf, st.st_size - 8, "#### LoaderInfo: ", 17); if (!s) goto finish; s += 17; e = memmem(s, st.st_size - (s - buf), " ####", 5); if (!e || e - s < 3) { log_error("Malformed version string."); r = -EINVAL; goto finish; } x = strndup(s, e - s); if (!x) { r = log_oom(); goto finish; } r = 1; finish: (void) munmap(buf, st.st_size); *v = x; return r; } static int enumerate_binaries(const char *esp_path, const char *path, const char *prefix) { char *p; _cleanup_closedir_ DIR *d = NULL; struct dirent *de; int r = 0, c = 0; p = strjoina(esp_path, "/", path); d = opendir(p); if (!d) { if (errno == ENOENT) return 0; return log_error_errno(errno, "Failed to read \"%s\": %m", p); } FOREACH_DIRENT(de, d, break) { _cleanup_close_ int fd = -1; _cleanup_free_ char *v = NULL; if (!endswith_no_case(de->d_name, ".efi")) continue; if (prefix && !startswith_no_case(de->d_name, prefix)) continue; fd = openat(dirfd(d), de->d_name, O_RDONLY|O_CLOEXEC); if (fd < 0) return log_error_errno(errno, "Failed to open \"%s/%s\" for reading: %m", p, de->d_name); r = get_file_version(fd, &v); if (r < 0) return r; if (r > 0) printf(" File: %s/%s/%s (%s)\n", special_glyph(TREE_RIGHT), path, de->d_name, v); else printf(" File: %s/%s/%s\n", special_glyph(TREE_RIGHT), path, de->d_name); c++; } return c; } static int status_binaries(const char *esp_path, sd_id128_t partition) { int r; printf("Boot Loader Binaries:\n"); if (!esp_path) { printf(" ESP: Cannot find or access mount point of ESP.\n\n"); return -ENOENT; } printf(" ESP: %s", esp_path); if (!sd_id128_is_null(partition)) printf(" (/dev/disk/by-partuuid/%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x)", SD_ID128_FORMAT_VAL(partition)); printf("\n"); r = enumerate_binaries(esp_path, "EFI/systemd", NULL); if (r == 0) log_error("systemd-boot not installed in ESP."); else if (r < 0) return r; r = enumerate_binaries(esp_path, "EFI/BOOT", "boot"); if (r == 0) log_error("No default/fallback boot loader installed in ESP."); else if (r < 0) return r; printf("\n"); return 0; } static int print_efi_option(uint16_t id, bool in_order) { _cleanup_free_ char *title = NULL; _cleanup_free_ char *path = NULL; sd_id128_t partition; bool active; int r = 0; r = efi_get_boot_option(id, &title, &partition, &path, &active); if (r < 0) return r; /* print only configured entries with partition information */ if (!path || sd_id128_is_null(partition)) return 0; efi_tilt_backslashes(path); printf(" Title: %s\n", strna(title)); printf(" ID: 0x%04X\n", id); printf(" Status: %sactive%s\n", active ? "" : "in", in_order ? ", boot-order" : ""); printf(" Partition: /dev/disk/by-partuuid/%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n", SD_ID128_FORMAT_VAL(partition)); printf(" File: %s%s\n", special_glyph(TREE_RIGHT), path); printf("\n"); return 0; } static int status_variables(void) { int n_options, n_order; _cleanup_free_ uint16_t *options = NULL, *order = NULL; int i; n_options = efi_get_boot_options(&options); if (n_options == -ENOENT) return log_error_errno(n_options, "Failed to access EFI variables, efivarfs" " needs to be available at /sys/firmware/efi/efivars/."); if (n_options < 0) return log_error_errno(n_options, "Failed to read EFI boot entries: %m"); n_order = efi_get_boot_order(&order); if (n_order == -ENOENT) n_order = 0; else if (n_order < 0) return log_error_errno(n_order, "Failed to read EFI boot order."); /* print entries in BootOrder first */ printf("Boot Loader Entries in EFI Variables:\n"); for (i = 0; i < n_order; i++) print_efi_option(order[i], true); /* print remaining entries */ for (i = 0; i < n_options; i++) { int j; for (j = 0; j < n_order; j++) if (options[i] == order[j]) goto next_option; print_efi_option(options[i], false); next_option: continue; } return 0; } static int status_entries(const char *esp_path, sd_id128_t partition) { int r; _cleanup_(boot_config_free) BootConfig config = {}; printf("Default Boot Entry:\n"); r = boot_entries_load_config(esp_path, &config); if (r < 0) return log_error_errno(r, "Failed to load bootspec config from \"%s/loader\": %m", esp_path); if (config.default_entry < 0) printf("%zu entries, no entry suitable as default\n", config.n_entries); else { const BootEntry *e = &config.entries[config.default_entry]; printf(" title: %s\n", boot_entry_title(e)); if (e->version) printf(" version: %s\n", e->version); if (e->kernel) printf(" linux: %s\n", e->kernel); if (!strv_isempty(e->initrd)) { _cleanup_free_ char *t; t = strv_join(e->initrd, " "); if (!t) return log_oom(); printf(" initrd: %s\n", t); } if (!strv_isempty(e->options)) { _cleanup_free_ char *t; t = strv_join(e->options, " "); if (!t) return log_oom(); printf(" options: %s\n", t); } if (e->device_tree) printf(" devicetree: %s\n", e->device_tree); puts(""); } return 0; } static int compare_product(const char *a, const char *b) { size_t x, y; assert(a); assert(b); x = strcspn(a, " "); y = strcspn(b, " "); if (x != y) return x < y ? -1 : x > y ? 1 : 0; return strncmp(a, b, x); } static int compare_version(const char *a, const char *b) { assert(a); assert(b); a += strcspn(a, " "); a += strspn(a, " "); b += strcspn(b, " "); b += strspn(b, " "); return strverscmp(a, b); } static int version_check(int fd_from, const char *from, int fd_to, const char *to) { _cleanup_free_ char *a = NULL, *b = NULL; int r; assert(fd_from >= 0); assert(from); assert(fd_to >= 0); assert(to); r = get_file_version(fd_from, &a); if (r < 0) return r; if (r == 0) { log_error("Source file \"%s\" does not carry version information!", from); return -EINVAL; } r = get_file_version(fd_to, &b); if (r < 0) return r; if (r == 0 || compare_product(a, b) != 0) { log_notice("Skipping \"%s\", since it's owned by another boot loader.", to); return -EEXIST; } if (compare_version(a, b) < 0) { log_warning("Skipping \"%s\", since a newer boot loader version exists already.", to); return -ESTALE; } return 0; } static int copy_file_with_version_check(const char *from, const char *to, bool force) { _cleanup_close_ int fd_from = -1, fd_to = -1; _cleanup_free_ char *t = NULL; int r; fd_from = open(from, O_RDONLY|O_CLOEXEC|O_NOCTTY); if (fd_from < 0) return log_error_errno(errno, "Failed to open \"%s\" for reading: %m", from); if (!force) { fd_to = open(to, O_RDONLY|O_CLOEXEC|O_NOCTTY); if (fd_to < 0) { if (errno != -ENOENT) return log_error_errno(errno, "Failed to open \"%s\" for reading: %m", to); } else { r = version_check(fd_from, from, fd_to, to); if (r < 0) return r; if (lseek(fd_from, 0, SEEK_SET) == (off_t) -1) return log_error_errno(errno, "Failed to seek in \"%s\": %m", from); fd_to = safe_close(fd_to); } } r = tempfn_random(to, NULL, &t); if (r < 0) return log_oom(); RUN_WITH_UMASK(0000) { fd_to = open(t, O_WRONLY|O_CREAT|O_CLOEXEC|O_EXCL|O_NOFOLLOW, 0644); if (fd_to < 0) return log_error_errno(errno, "Failed to open \"%s\" for writing: %m", t); } r = copy_bytes(fd_from, fd_to, (uint64_t) -1, COPY_REFLINK); if (r < 0) { (void) unlink(t); return log_error_errno(r, "Failed to copy data from \"%s\" to \"%s\": %m", from, t); } (void) copy_times(fd_from, fd_to); if (fsync(fd_to) < 0) { (void) unlink_noerrno(t); return log_error_errno(errno, "Failed to copy data from \"%s\" to \"%s\": %m", from, t); } (void) fsync_directory_of_file(fd_to); if (renameat(AT_FDCWD, t, AT_FDCWD, to) < 0) { (void) unlink_noerrno(t); return log_error_errno(errno, "Failed to rename \"%s\" to \"%s\": %m", t, to); } log_info("Copied \"%s\" to \"%s\".", from, to); return 0; } static int mkdir_one(const char *prefix, const char *suffix) { char *p; p = strjoina(prefix, "/", suffix); if (mkdir(p, 0700) < 0) { if (errno != EEXIST) return log_error_errno(errno, "Failed to create \"%s\": %m", p); } else log_info("Created \"%s\".", p); return 0; } static const char *efi_subdirs[] = { "EFI", "EFI/systemd", "EFI/BOOT", "loader", "loader/entries", NULL }; static int create_dirs(const char *esp_path) { const char **i; int r; STRV_FOREACH(i, efi_subdirs) { r = mkdir_one(esp_path, *i); if (r < 0) return r; } return 0; } static int copy_one_file(const char *esp_path, const char *name, bool force) { char *p, *q; int r; p = strjoina(BOOTLIBDIR "/", name); q = strjoina(esp_path, "/EFI/systemd/", name); r = copy_file_with_version_check(p, q, force); if (startswith(name, "systemd-boot")) { int k; char *v; /* Create the EFI default boot loader name (specified for removable devices) */ v = strjoina(esp_path, "/EFI/BOOT/BOOT", name + STRLEN("systemd-boot")); ascii_strupper(strrchr(v, '/') + 1); k = copy_file_with_version_check(p, v, force); if (k < 0 && r == 0) r = k; } return r; } static int install_binaries(const char *esp_path, bool force) { struct dirent *de; _cleanup_closedir_ DIR *d = NULL; int r = 0; if (force) { /* Don't create any of these directories when we are * just updating. When we update we'll drop-in our * files (unless there are newer ones already), but we * won't create the directories for them in the first * place. */ r = create_dirs(esp_path); if (r < 0) return r; } d = opendir(BOOTLIBDIR); if (!d) return log_error_errno(errno, "Failed to open \""BOOTLIBDIR"\": %m"); FOREACH_DIRENT(de, d, break) { int k; if (!endswith_no_case(de->d_name, ".efi")) continue; k = copy_one_file(esp_path, de->d_name, force); if (k < 0 && r == 0) r = k; } return r; } static bool same_entry(uint16_t id, const sd_id128_t uuid, const char *path) { _cleanup_free_ char *opath = NULL; sd_id128_t ouuid; int r; r = efi_get_boot_option(id, NULL, &ouuid, &opath, NULL); if (r < 0) return false; if (!sd_id128_equal(uuid, ouuid)) return false; if (!streq_ptr(path, opath)) return false; return true; } static int find_slot(sd_id128_t uuid, const char *path, uint16_t *id) { _cleanup_free_ uint16_t *options = NULL; int n, i; n = efi_get_boot_options(&options); if (n < 0) return n; /* find already existing systemd-boot entry */ for (i = 0; i < n; i++) if (same_entry(options[i], uuid, path)) { *id = options[i]; return 1; } /* find free slot in the sorted BootXXXX variable list */ for (i = 0; i < n; i++) if (i != options[i]) { *id = i; return 1; } /* use the next one */ if (i == 0xffff) return -ENOSPC; *id = i; return 0; } static int insert_into_order(uint16_t slot, bool first) { _cleanup_free_ uint16_t *order = NULL; uint16_t *t; int n, i; n = efi_get_boot_order(&order); if (n <= 0) /* no entry, add us */ return efi_set_boot_order(&slot, 1); /* are we the first and only one? */ if (n == 1 && order[0] == slot) return 0; /* are we already in the boot order? */ for (i = 0; i < n; i++) { if (order[i] != slot) continue; /* we do not require to be the first one, all is fine */ if (!first) return 0; /* move us to the first slot */ memmove(order + 1, order, i * sizeof(uint16_t)); order[0] = slot; return efi_set_boot_order(order, n); } /* extend array */ t = realloc(order, (n + 1) * sizeof(uint16_t)); if (!t) return -ENOMEM; order = t; /* add us to the top or end of the list */ if (first) { memmove(order + 1, order, n * sizeof(uint16_t)); order[0] = slot; } else order[n] = slot; return efi_set_boot_order(order, n + 1); } static int remove_from_order(uint16_t slot) { _cleanup_free_ uint16_t *order = NULL; int n, i; n = efi_get_boot_order(&order); if (n <= 0) return n; for (i = 0; i < n; i++) { if (order[i] != slot) continue; if (i + 1 < n) memmove(order + i, order + i+1, (n - i) * sizeof(uint16_t)); return efi_set_boot_order(order, n - 1); } return 0; } static int install_variables(const char *esp_path, uint32_t part, uint64_t pstart, uint64_t psize, sd_id128_t uuid, const char *path, bool first) { char *p; uint16_t slot; int r; if (!is_efi_boot()) { log_warning("Not booted with EFI, skipping EFI variable setup."); return 0; } p = strjoina(esp_path, path); if (access(p, F_OK) < 0) { if (errno == ENOENT) return 0; return log_error_errno(errno, "Cannot access \"%s\": %m", p); } r = find_slot(uuid, path, &slot); if (r < 0) return log_error_errno(r, r == -ENOENT ? "Failed to access EFI variables. Is the \"efivarfs\" filesystem mounted?" : "Failed to determine current boot order: %m"); if (first || r == 0) { r = efi_add_boot_option(slot, "Linux Boot Manager", part, pstart, psize, uuid, path); if (r < 0) return log_error_errno(r, "Failed to create EFI Boot variable entry: %m"); log_info("Created EFI boot entry \"Linux Boot Manager\"."); } return insert_into_order(slot, first); } static int remove_boot_efi(const char *esp_path) { char *p; _cleanup_closedir_ DIR *d = NULL; struct dirent *de; int r, c = 0; p = strjoina(esp_path, "/EFI/BOOT"); d = opendir(p); if (!d) { if (errno == ENOENT) return 0; return log_error_errno(errno, "Failed to open directory \"%s\": %m", p); } FOREACH_DIRENT(de, d, break) { _cleanup_close_ int fd = -1; _cleanup_free_ char *v = NULL; if (!endswith_no_case(de->d_name, ".efi")) continue; if (!startswith_no_case(de->d_name, "boot")) continue; fd = openat(dirfd(d), de->d_name, O_RDONLY|O_CLOEXEC); if (fd < 0) return log_error_errno(errno, "Failed to open \"%s/%s\" for reading: %m", p, de->d_name); r = get_file_version(fd, &v); if (r < 0) return r; if (r > 0 && startswith(v, "systemd-boot ")) { r = unlinkat(dirfd(d), de->d_name, 0); if (r < 0) return log_error_errno(errno, "Failed to remove \"%s/%s\": %m", p, de->d_name); log_info("Removed \"%s/%s\".", p, de->d_name); } c++; } return c; } static int rmdir_one(const char *prefix, const char *suffix) { char *p; p = strjoina(prefix, "/", suffix); if (rmdir(p) < 0) { if (!IN_SET(errno, ENOENT, ENOTEMPTY)) return log_error_errno(errno, "Failed to remove \"%s\": %m", p); } else log_info("Removed \"%s\".", p); return 0; } static int remove_binaries(const char *esp_path) { char *p; int r, q; unsigned i; p = strjoina(esp_path, "/EFI/systemd"); r = rm_rf(p, REMOVE_ROOT|REMOVE_PHYSICAL); q = remove_boot_efi(esp_path); if (q < 0 && r == 0) r = q; for (i = ELEMENTSOF(efi_subdirs)-1; i > 0; i--) { q = rmdir_one(esp_path, efi_subdirs[i-1]); if (q < 0 && r == 0) r = q; } return r; } static int remove_variables(sd_id128_t uuid, const char *path, bool in_order) { uint16_t slot; int r; if (!is_efi_boot()) return 0; r = find_slot(uuid, path, &slot); if (r != 1) return 0; r = efi_remove_boot_option(slot); if (r < 0) return r; if (in_order) return remove_from_order(slot); return 0; } static int install_loader_config(const char *esp_path) { char machine_string[SD_ID128_STRING_MAX]; _cleanup_(unlink_and_freep) char *t = NULL; _cleanup_fclose_ FILE *f = NULL; sd_id128_t machine_id; const char *p; int r, fd; r = sd_id128_get_machine(&machine_id); if (r < 0) return log_error_errno(r, "Failed to get machine id: %m"); p = strjoina(esp_path, "/loader/loader.conf"); if (access(p, F_OK) >= 0) /* Silently skip creation if the file already exists (early check) */ return 0; fd = open_tmpfile_linkable(p, O_WRONLY|O_CLOEXEC, &t); if (fd < 0) return log_error_errno(fd, "Failed to open \"%s\" for writing: %m", p); f = fdopen(fd, "we"); if (!f) { safe_close(fd); return log_oom(); } fprintf(f, "#timeout 3\n"); fprintf(f, "#console-mode keep\n"); fprintf(f, "default %s-*\n", sd_id128_to_string(machine_id, machine_string)); r = fflush_sync_and_check(f); if (r < 0) return log_error_errno(r, "Failed to write \"%s\": %m", p); r = link_tmpfile(fd, t, p); if (r == -EEXIST) return 0; /* Silently skip creation if the file exists now (recheck) */ if (r < 0) return log_error_errno(r, "Failed to move \"%s\" into place: %m", p); t = mfree(t); return 1; } static int help(int argc, char *argv[], void *userdata) { printf("%s [COMMAND] [OPTIONS...]\n" "\n" "Install, update or remove the systemd-boot EFI boot manager.\n\n" " -h --help Show this help\n" " --version Print version\n" " --path=PATH Path to the EFI System Partition (ESP)\n" " -p --print-path Print path to the EFI partition\n" " --no-variables Don't touch EFI variables\n" "\n" "Commands:\n" " status Show status of installed systemd-boot and EFI variables\n" " list List boot entries\n" " install Install systemd-boot to the ESP and EFI variables\n" " update Update systemd-boot in the ESP and EFI variables\n" " remove Remove systemd-boot from the ESP and EFI variables\n", program_invocation_short_name); return 0; } static int parse_argv(int argc, char *argv[]) { enum { ARG_PATH = 0x100, ARG_VERSION, ARG_NO_VARIABLES, }; static const struct option options[] = { { "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, ARG_VERSION }, { "path", required_argument, NULL, ARG_PATH }, { "print-path", no_argument, NULL, 'p' }, { "no-variables", no_argument, NULL, ARG_NO_VARIABLES }, { NULL, 0, NULL, 0 } }; int c, r; assert(argc >= 0); assert(argv); while ((c = getopt_long(argc, argv, "hp", options, NULL)) >= 0) switch (c) { case 'h': help(0, NULL, NULL); return 0; case ARG_VERSION: return version(); case ARG_PATH: r = free_and_strdup(&arg_path, optarg); if (r < 0) return log_oom(); break; case 'p': arg_print_path = true; break; case ARG_NO_VARIABLES: arg_touch_variables = false; break; case '?': return -EINVAL; default: assert_not_reached("Unknown option"); } return 1; } static void read_loader_efi_var(const char *name, char **var) { int r; r = efi_get_variable_string(EFI_VENDOR_LOADER, name, var); if (r < 0 && r != -ENOENT) log_warning_errno(r, "Failed to read EFI variable %s: %m", name); } static int verb_status(int argc, char *argv[], void *userdata) { sd_id128_t uuid = SD_ID128_NULL; int r, k; r = acquire_esp(geteuid() != 0, NULL, NULL, NULL, &uuid); if (arg_print_path) { if (r == -EACCES) /* If we couldn't acquire the ESP path, log about access errors (which is the only * error the find_esp_and_warn() won't log on its own) */ return log_error_errno(r, "Failed to determine ESP: %m"); if (r < 0) return r; puts(arg_path); return 0; } r = 0; /* If we couldn't determine the path, then don't consider that a problem from here on, just show what we * can show */ if (is_efi_boot()) { _cleanup_free_ char *fw_type = NULL, *fw_info = NULL, *loader = NULL, *loader_path = NULL, *stub = NULL; sd_id128_t loader_part_uuid = SD_ID128_NULL; read_loader_efi_var("LoaderFirmwareType", &fw_type); read_loader_efi_var("LoaderFirmwareInfo", &fw_info); read_loader_efi_var("LoaderInfo", &loader); read_loader_efi_var("StubInfo", &stub); read_loader_efi_var("LoaderImageIdentifier", &loader_path); if (loader_path) efi_tilt_backslashes(loader_path); k = efi_loader_get_device_part_uuid(&loader_part_uuid); if (k < 0 && k != -ENOENT) r = log_warning_errno(k, "Failed to read EFI variable LoaderDevicePartUUID: %m"); printf("System:\n"); printf(" Firmware: %s (%s)\n", strna(fw_type), strna(fw_info)); k = is_efi_secure_boot(); if (k < 0) r = log_warning_errno(k, "Failed to query secure boot status: %m"); else printf(" Secure Boot: %sd\n", enable_disable(k)); k = is_efi_secure_boot_setup_mode(); if (k < 0) r = log_warning_errno(k, "Failed to query secure boot mode: %m"); else printf(" Setup Mode: %s\n", k ? "setup" : "user"); printf("\n"); printf("Current Loader:\n"); printf(" Product: %s\n", strna(loader)); if (stub) printf(" Stub: %s\n", stub); if (!sd_id128_is_null(loader_part_uuid)) printf(" ESP: /dev/disk/by-partuuid/%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n", SD_ID128_FORMAT_VAL(loader_part_uuid)); else printf(" ESP: n/a\n"); printf(" File: %s%s\n", special_glyph(TREE_RIGHT), strna(loader_path)); printf("\n"); } else printf("System:\n Not booted with EFI\n\n"); if (arg_path) { k = status_binaries(arg_path, uuid); if (k < 0) r = k; } if (is_efi_boot()) { k = status_variables(); if (k < 0) r = k; } if (arg_path) { k = status_entries(arg_path, uuid); if (k < 0) r = k; } return r; } static int verb_list(int argc, char *argv[], void *userdata) { _cleanup_(boot_config_free) BootConfig config = {}; sd_id128_t uuid = SD_ID128_NULL; unsigned n; int r; /* If we lack privileges we invoke find_esp_and_warn() in "unprivileged mode" here, which does two things: turn * off logging about access errors and turn off potentially privileged device probing. Here we're interested in * the latter but not the former, hence request the mode, and log about EACCES. */ r = acquire_esp(geteuid() != 0, NULL, NULL, NULL, &uuid); if (r == -EACCES) /* We really need the ESP path for this call, hence also log about access errors */ return log_error_errno(r, "Failed to determine ESP: %m"); if (r < 0) return r; r = boot_entries_load_config(arg_path, &config); if (r < 0) return log_error_errno(r, "Failed to load bootspec config from \"%s/loader\": %m", arg_path); printf("Available boot entries:\n"); for (n = 0; n < config.n_entries; n++) { const BootEntry *e = &config.entries[n]; printf(" title: %s%s%s%s%s%s\n", ansi_highlight(), boot_entry_title(e), ansi_normal(), ansi_highlight_green(), n == (unsigned) config.default_entry ? " (default)" : "", ansi_normal()); if (e->version) printf(" version: %s\n", e->version); if (e->machine_id) printf(" machine-id: %s\n", e->machine_id); if (e->architecture) printf(" architecture: %s\n", e->architecture); if (e->kernel) printf(" linux: %s\n", e->kernel); if (!strv_isempty(e->initrd)) { _cleanup_free_ char *t; t = strv_join(e->initrd, " "); if (!t) return log_oom(); printf(" initrd: %s\n", t); } if (!strv_isempty(e->options)) { _cleanup_free_ char *t; t = strv_join(e->options, " "); if (!t) return log_oom(); printf(" options: %s\n", t); } if (e->device_tree) printf(" devicetree: %s\n", e->device_tree); puts(""); } return 0; } static int verb_install(int argc, char *argv[], void *userdata) { sd_id128_t uuid = SD_ID128_NULL; uint64_t pstart = 0, psize = 0; uint32_t part = 0; bool install; int r; r = acquire_esp(false, &part, &pstart, &psize, &uuid); if (r < 0) return r; install = streq(argv[0], "install"); RUN_WITH_UMASK(0002) { r = install_binaries(arg_path, install); if (r < 0) return r; if (install) { r = install_loader_config(arg_path); if (r < 0) return r; } } if (arg_touch_variables) r = install_variables(arg_path, part, pstart, psize, uuid, "/EFI/systemd/systemd-boot" EFI_MACHINE_TYPE_NAME ".efi", install); return r; } static int verb_remove(int argc, char *argv[], void *userdata) { sd_id128_t uuid = SD_ID128_NULL; int r; r = acquire_esp(false, NULL, NULL, NULL, &uuid); if (r < 0) return r; r = remove_binaries(arg_path); if (arg_touch_variables) { int q; q = remove_variables(uuid, "/EFI/systemd/systemd-boot" EFI_MACHINE_TYPE_NAME ".efi", true); if (q < 0 && r == 0) r = q; } return r; } static int bootctl_main(int argc, char *argv[]) { static const Verb verbs[] = { { "help", VERB_ANY, VERB_ANY, 0, help }, { "status", VERB_ANY, 1, VERB_DEFAULT, verb_status }, { "list", VERB_ANY, 1, 0, verb_list }, { "install", VERB_ANY, 1, VERB_MUST_BE_ROOT, verb_install }, { "update", VERB_ANY, 1, VERB_MUST_BE_ROOT, verb_install }, { "remove", VERB_ANY, 1, VERB_MUST_BE_ROOT, verb_remove }, {} }; return dispatch_verb(argc, argv, verbs, NULL); } int main(int argc, char *argv[]) { int r; log_parse_environment(); log_open(); /* If we run in a container, automatically turn of EFI file system access */ if (detect_container() > 0) arg_touch_variables = false; r = parse_argv(argc, argv); if (r <= 0) goto finish; r = bootctl_main(argc, argv); finish: free(arg_path); return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; }