diff options
Diffstat (limited to '')
| -rw-r--r-- | src/boot/bootctl.c | 2636 |
1 files changed, 2636 insertions, 0 deletions
diff --git a/src/boot/bootctl.c b/src/boot/bootctl.c new file mode 100644 index 0000000..61eed61 --- /dev/null +++ b/src/boot/bootctl.c @@ -0,0 +1,2636 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <ctype.h> +#include <errno.h> +#include <getopt.h> +#include <limits.h> +#include <linux/magic.h> +#include <stdbool.h> +#include <stdlib.h> +#include <sys/mman.h> +#include <unistd.h> + +#include "sd-id128.h" + +#include "alloc-util.h" +#include "blkid-util.h" +#include "bootspec.h" +#include "chase-symlinks.h" +#include "copy.h" +#include "devnum-util.h" +#include "dirent-util.h" +#include "dissect-image.h" +#include "efi-api.h" +#include "efi-loader.h" +#include "efivars.h" +#include "env-file.h" +#include "env-util.h" +#include "escape.h" +#include "fd-util.h" +#include "fileio.h" +#include "find-esp.h" +#include "fs-util.h" +#include "glyph-util.h" +#include "main-func.h" +#include "mkdir.h" +#include "mount-util.h" +#include "os-util.h" +#include "pager.h" +#include "parse-argument.h" +#include "parse-util.h" +#include "pretty-print.h" +#include "random-util.h" +#include "rm-rf.h" +#include "stat-util.h" +#include "stdio-util.h" +#include "string-table.h" +#include "string-util.h" +#include "strv.h" +#include "sync-util.h" +#include "terminal-util.h" +#include "tmpfile-util.h" +#include "tmpfile-util-label.h" +#include "tpm2-util.h" +#include "umask-util.h" +#include "utf8.h" +#include "util.h" +#include "verbs.h" +#include "virt.h" + +/* EFI_BOOT_OPTION_DESCRIPTION_MAX sets the maximum length for the boot option description + * stored in NVRAM. The UEFI spec does not specify a minimum or maximum length for this + * string, but we limit the length to something reasonable to prevent from the firmware + * having to deal with a potentially too long string. */ +#define EFI_BOOT_OPTION_DESCRIPTION_MAX ((size_t) 255) + +static char *arg_esp_path = NULL; +static char *arg_xbootldr_path = NULL; +static bool arg_print_esp_path = false; +static bool arg_print_dollar_boot_path = false; +static bool arg_touch_variables = true; +static PagerFlags arg_pager_flags = 0; +static bool arg_graceful = false; +static bool arg_quiet = false; +static int arg_make_entry_directory = false; /* tri-state: < 0 for automatic logic */ +static sd_id128_t arg_machine_id = SD_ID128_NULL; +static char *arg_install_layout = NULL; +static enum { + ARG_ENTRY_TOKEN_MACHINE_ID, + ARG_ENTRY_TOKEN_OS_IMAGE_ID, + ARG_ENTRY_TOKEN_OS_ID, + ARG_ENTRY_TOKEN_LITERAL, + ARG_ENTRY_TOKEN_AUTO, +} arg_entry_token_type = ARG_ENTRY_TOKEN_AUTO; +static char *arg_entry_token = NULL; +static JsonFormatFlags arg_json_format_flags = JSON_FORMAT_OFF; +static bool arg_arch_all = false; +static char *arg_root = NULL; +static char *arg_image = NULL; +static enum { + ARG_INSTALL_SOURCE_IMAGE, + ARG_INSTALL_SOURCE_HOST, + ARG_INSTALL_SOURCE_AUTO, +} arg_install_source = ARG_INSTALL_SOURCE_AUTO; +static char *arg_efi_boot_option_description = NULL; + +STATIC_DESTRUCTOR_REGISTER(arg_esp_path, freep); +STATIC_DESTRUCTOR_REGISTER(arg_xbootldr_path, freep); +STATIC_DESTRUCTOR_REGISTER(arg_install_layout, freep); +STATIC_DESTRUCTOR_REGISTER(arg_entry_token, freep); +STATIC_DESTRUCTOR_REGISTER(arg_root, freep); +STATIC_DESTRUCTOR_REGISTER(arg_image, freep); +STATIC_DESTRUCTOR_REGISTER(arg_efi_boot_option_description, freep); + +static const char *arg_dollar_boot_path(void) { + /* $BOOT shall be the XBOOTLDR partition if it exists, and otherwise the ESP */ + return arg_xbootldr_path ?: arg_esp_path; +} + +static const char *pick_efi_boot_option_description(void) { + return arg_efi_boot_option_description ?: "Linux Boot Manager"; +} + +static int acquire_esp( + bool unprivileged_mode, + bool graceful, + uint32_t *ret_part, + uint64_t *ret_pstart, + uint64_t *ret_psize, + sd_id128_t *ret_uuid, + dev_t *ret_devid) { + + 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 --esp-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_root, arg_esp_path, unprivileged_mode, &np, ret_part, ret_pstart, ret_psize, ret_uuid, ret_devid); + if (r == -ENOKEY) { + if (graceful) + return log_full_errno(arg_quiet ? LOG_DEBUG : LOG_INFO, r, + "Couldn't find EFI system partition, skipping."); + + return log_error_errno(r, + "Couldn't find EFI system partition. It is recommended to mount it to /boot or /efi.\n" + "Alternatively, use --esp-path= to specify path to mount point."); + } + if (r < 0) + return r; + + free_and_replace(arg_esp_path, np); + log_debug("Using EFI System Partition at %s.", arg_esp_path); + + return 0; +} + +static int acquire_xbootldr( + bool unprivileged_mode, + sd_id128_t *ret_uuid, + dev_t *ret_devid) { + + char *np; + int r; + + r = find_xbootldr_and_warn(arg_root, arg_xbootldr_path, unprivileged_mode, &np, ret_uuid, ret_devid); + if (r == -ENOKEY) { + log_debug_errno(r, "Didn't find an XBOOTLDR partition, using the ESP as $BOOT."); + arg_xbootldr_path = mfree(arg_xbootldr_path); + + if (ret_uuid) + *ret_uuid = SD_ID128_NULL; + if (ret_devid) + *ret_devid = 0; + return 0; + } + if (r < 0) + return r; + + free_and_replace(arg_xbootldr_path, np); + log_debug("Using XBOOTLDR partition at %s as $BOOT.", arg_xbootldr_path); + + return 1; +} + +static int load_etc_machine_id(void) { + int r; + + r = sd_id128_get_machine(&arg_machine_id); + if (IN_SET(r, -ENOENT, -ENOMEDIUM, -ENOPKG)) /* Not set or empty */ + return 0; + if (r < 0) + return log_error_errno(r, "Failed to get machine-id: %m"); + + log_debug("Loaded machine ID %s from /etc/machine-id.", SD_ID128_TO_STRING(arg_machine_id)); + return 0; +} + +static int load_etc_machine_info(void) { + /* systemd v250 added support to store the kernel-install layout setting and the machine ID to use + * for setting up the ESP in /etc/machine-info. The newer /etc/kernel/entry-token file, as well as + * the $layout field in /etc/kernel/install.conf are better replacements for this though, hence this + * has been deprecated and is only returned for compatibility. */ + _cleanup_free_ char *s = NULL, *layout = NULL; + int r; + + r = parse_env_file(NULL, "/etc/machine-info", + "KERNEL_INSTALL_LAYOUT", &layout, + "KERNEL_INSTALL_MACHINE_ID", &s); + if (r == -ENOENT) + return 0; + if (r < 0) + return log_error_errno(r, "Failed to parse /etc/machine-info: %m"); + + if (!isempty(s)) { + if (!arg_quiet) + log_notice("Read $KERNEL_INSTALL_MACHINE_ID from /etc/machine-info. " + "Please move it to /etc/kernel/entry-token."); + + r = sd_id128_from_string(s, &arg_machine_id); + if (r < 0) + return log_error_errno(r, "Failed to parse KERNEL_INSTALL_MACHINE_ID=%s in /etc/machine-info: %m", s); + + log_debug("Loaded KERNEL_INSTALL_MACHINE_ID=%s from KERNEL_INSTALL_MACHINE_ID in /etc/machine-info.", + SD_ID128_TO_STRING(arg_machine_id)); + } + + if (!isempty(layout)) { + if (!arg_quiet) + log_notice("Read $KERNEL_INSTALL_LAYOUT from /etc/machine-info. " + "Please move it to the layout= setting of /etc/kernel/install.conf."); + + log_debug("KERNEL_INSTALL_LAYOUT=%s is specified in /etc/machine-info.", layout); + free_and_replace(arg_install_layout, layout); + } + + return 0; +} + +static int load_etc_kernel_install_conf(void) { + _cleanup_free_ char *layout = NULL; + int r; + + r = parse_env_file(NULL, "/etc/kernel/install.conf", + "layout", &layout); + if (r == -ENOENT) + return 0; + if (r < 0) + return log_error_errno(r, "Failed to parse /etc/kernel/install.conf: %m"); + + if (!isempty(layout)) { + log_debug("layout=%s is specified in /etc/machine-info.", layout); + free_and_replace(arg_install_layout, layout); + } + + return 0; +} + +static int settle_entry_token(void) { + int r; + + switch (arg_entry_token_type) { + + case ARG_ENTRY_TOKEN_AUTO: { + _cleanup_free_ char *buf = NULL; + r = read_one_line_file("/etc/kernel/entry-token", &buf); + if (r < 0 && r != -ENOENT) + return log_error_errno(r, "Failed to read /etc/kernel/entry-token: %m"); + + if (!isempty(buf)) { + free_and_replace(arg_entry_token, buf); + arg_entry_token_type = ARG_ENTRY_TOKEN_LITERAL; + } else if (sd_id128_is_null(arg_machine_id)) { + _cleanup_free_ char *id = NULL, *image_id = NULL; + + r = parse_os_release(NULL, + "IMAGE_ID", &image_id, + "ID", &id); + if (r < 0) + return log_error_errno(r, "Failed to load /etc/os-release: %m"); + + if (!isempty(image_id)) { + free_and_replace(arg_entry_token, image_id); + arg_entry_token_type = ARG_ENTRY_TOKEN_OS_IMAGE_ID; + } else if (!isempty(id)) { + free_and_replace(arg_entry_token, id); + arg_entry_token_type = ARG_ENTRY_TOKEN_OS_ID; + } else + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No machine ID set, and /etc/os-release carries no ID=/IMAGE_ID= fields."); + } else { + r = free_and_strdup_warn(&arg_entry_token, SD_ID128_TO_STRING(arg_machine_id)); + if (r < 0) + return r; + + arg_entry_token_type = ARG_ENTRY_TOKEN_MACHINE_ID; + } + + break; + } + + case ARG_ENTRY_TOKEN_MACHINE_ID: + if (sd_id128_is_null(arg_machine_id)) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No machine ID set."); + + r = free_and_strdup_warn(&arg_entry_token, SD_ID128_TO_STRING(arg_machine_id)); + if (r < 0) + return r; + + break; + + case ARG_ENTRY_TOKEN_OS_IMAGE_ID: { + _cleanup_free_ char *buf = NULL; + + r = parse_os_release(NULL, "IMAGE_ID", &buf); + if (r < 0) + return log_error_errno(r, "Failed to load /etc/os-release: %m"); + + if (isempty(buf)) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "IMAGE_ID= field not set in /etc/os-release."); + + free_and_replace(arg_entry_token, buf); + break; + } + + case ARG_ENTRY_TOKEN_OS_ID: { + _cleanup_free_ char *buf = NULL; + + r = parse_os_release(NULL, "ID", &buf); + if (r < 0) + return log_error_errno(r, "Failed to load /etc/os-release: %m"); + + if (isempty(buf)) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "ID= field not set in /etc/os-release."); + + free_and_replace(arg_entry_token, buf); + break; + } + + case ARG_ENTRY_TOKEN_LITERAL: + assert(!isempty(arg_entry_token)); /* already filled in by command line parser */ + break; + } + + if (isempty(arg_entry_token) || !(utf8_is_valid(arg_entry_token) && string_is_safe(arg_entry_token))) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Selected entry token not valid: %s", arg_entry_token); + + log_debug("Using entry token: %s", arg_entry_token); + return 0; +} + +static bool use_boot_loader_spec_type1(void) { + /* If the layout is not specified, or if it is set explicitly to "bls" we assume Boot Loader + * Specification Type #1 is the chosen format for our boot loader entries */ + return !arg_install_layout || streq(arg_install_layout, "bls"); +} + +static int settle_make_entry_directory(void) { + int r; + + r = load_etc_machine_id(); + if (r < 0) + return r; + + r = load_etc_machine_info(); + if (r < 0) + return r; + + r = load_etc_kernel_install_conf(); + if (r < 0) + return r; + + r = settle_entry_token(); + if (r < 0) + return r; + + bool layout_type1 = use_boot_loader_spec_type1(); + if (arg_make_entry_directory < 0) { /* Automatic mode */ + if (layout_type1) { + if (arg_entry_token_type == ARG_ENTRY_TOKEN_MACHINE_ID) { + r = path_is_temporary_fs("/etc/machine-id"); + if (r < 0) + return log_debug_errno(r, "Couldn't determine whether /etc/machine-id is on a temporary file system: %m"); + + arg_make_entry_directory = r == 0; + } else + arg_make_entry_directory = true; + } else + arg_make_entry_directory = false; + } + + if (arg_make_entry_directory > 0 && !layout_type1) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "KERNEL_INSTALL_LAYOUT=%s is configured, but Boot Loader Specification Type #1 entry directory creation was requested.", + arg_install_layout); + + 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; + + assert(fd >= 0); + assert(v); + + if (fstat(fd, &st) < 0) + return log_error_errno(errno, "Failed to stat EFI binary: %m"); + + r = stat_verify_regular(&st); + if (r < 0) + return log_error_errno(r, "EFI binary is not a regular file: %m"); + + if (st.st_size < 27 || file_offset_beyond_memory_size(st.st_size)) { + *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 = mempmem_safe(buf, st.st_size - 8, "#### LoaderInfo: ", 17); + if (!s) + goto finish; + + e = memmem_safe(s, st.st_size - (s - buf), " ####", 5); + if (!e || e - s < 3) { + r = log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Malformed version string."); + 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 const char *get_efi_arch(void) { + /* Detect EFI firmware architecture of the running system. On mixed mode systems, it could be 32bit + * while the kernel is running in 64bit. */ + +#ifdef __x86_64__ + _cleanup_free_ char *platform_size = NULL; + int r; + + r = read_one_line_file("/sys/firmware/efi/fw_platform_size", &platform_size); + if (r == -ENOENT) + return EFI_MACHINE_TYPE_NAME; + if (r < 0) { + log_warning_errno(r, + "Error reading EFI firmware word size, assuming machine type '%s': %m", + EFI_MACHINE_TYPE_NAME); + return EFI_MACHINE_TYPE_NAME; + } + + if (streq(platform_size, "64")) + return EFI_MACHINE_TYPE_NAME; + if (streq(platform_size, "32")) + return "ia32"; + + log_warning( + "Unknown EFI firmware word size '%s', using machine type '%s'.", + platform_size, + EFI_MACHINE_TYPE_NAME); +#endif + + return EFI_MACHINE_TYPE_NAME; +} + +static int enumerate_binaries( + const char *esp_path, + const char *path, + const char *prefix, + char **previous, + bool *is_first) { + + _cleanup_closedir_ DIR *d = NULL; + _cleanup_free_ char *p = NULL; + int c = 0, r; + + assert(esp_path); + assert(path); + assert(previous); + assert(is_first); + + r = chase_symlinks_and_opendir(path, esp_path, CHASE_PREFIX_ROOT, &p, &d); + if (r == -ENOENT) + return 0; + if (r < 0) + return log_error_errno(r, "Failed to read \"%s/%s\": %m", esp_path, path); + + FOREACH_DIRENT(de, d, break) { + _cleanup_free_ char *v = NULL; + _cleanup_close_ int fd = -1; + + 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 (*previous) { /* let's output the previous entry now, since now we know that there will be one more, and can draw the tree glyph properly */ + printf(" %s %s%s\n", + *is_first ? "File:" : " ", + special_glyph(SPECIAL_GLYPH_TREE_BRANCH), *previous); + *is_first = false; + *previous = mfree(*previous); + } + + /* Do not output this entry immediately, but store what should be printed in a state + * variable, because we only will know the tree glyph to print (branch or final edge) once we + * read one more entry */ + if (r > 0) + r = asprintf(previous, "/%s/%s (%s%s%s)", path, de->d_name, ansi_highlight(), v, ansi_normal()); + else + r = asprintf(previous, "/%s/%s", path, de->d_name); + if (r < 0) + return log_oom(); + + c++; + } + + return c; +} + +static int status_binaries(const char *esp_path, sd_id128_t partition) { + _cleanup_free_ char *last = NULL; + bool is_first = true; + int r, k; + + printf("%sAvailable Boot Loaders on ESP:%s\n", ansi_underline(), ansi_normal()); + + 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/" SD_ID128_UUID_FORMAT_STR ")", SD_ID128_FORMAT_VAL(partition)); + printf("\n"); + + r = enumerate_binaries(esp_path, "EFI/systemd", NULL, &last, &is_first); + if (r < 0) { + printf("\n"); + return r; + } + + k = enumerate_binaries(esp_path, "EFI/BOOT", "boot", &last, &is_first); + if (k < 0) { + printf("\n"); + return k; + } + + if (last) /* let's output the last entry now, since now we know that there will be no more, and can draw the tree glyph properly */ + printf(" %s %s%s\n", + is_first ? "File:" : " ", + special_glyph(SPECIAL_GLYPH_TREE_RIGHT), last); + + if (r == 0 && !arg_quiet) + log_info("systemd-boot not installed in ESP."); + if (k == 0 && !arg_quiet) + log_info("No default/fallback boot loader installed in ESP."); + + printf("\n"); + return 0; +} + +static int print_efi_option(uint16_t id, int *n_printed, bool in_order) { + _cleanup_free_ char *title = NULL; + _cleanup_free_ char *path = NULL; + sd_id128_t partition; + bool active; + int r; + + assert(n_printed); + + r = efi_get_boot_option(id, &title, &partition, &path, &active); + if (r == -ENOENT) { + log_debug_errno(r, "Boot option 0x%04X referenced but missing, ignoring: %m", id); + return 0; + } + if (r < 0) + return log_error_errno(r, "Failed to read boot option 0x%04X: %m", id); + + /* print only configured entries with partition information */ + if (!path || sd_id128_is_null(partition)) { + log_debug("Ignoring boot entry 0x%04X without partition information.", id); + return 0; + } + + efi_tilt_backslashes(path); + + if (*n_printed == 0) /* Print section title before first entry */ + printf("%sBoot Loaders Listed in EFI Variables:%s\n", ansi_underline(), ansi_normal()); + + printf(" Title: %s%s%s\n", ansi_highlight(), strna(title), ansi_normal()); + printf(" ID: 0x%04X\n", id); + printf(" Status: %sactive%s\n", active ? "" : "in", in_order ? ", boot-order" : ""); + printf(" Partition: /dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR "\n", + SD_ID128_FORMAT_VAL(partition)); + printf(" File: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), path); + printf("\n"); + + (*n_printed)++; + return 1; +} + +static int status_variables(void) { + _cleanup_free_ uint16_t *options = NULL, *order = NULL; + int n_options, n_order, n_printed = 0; + + 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: %m"); + + /* print entries in BootOrder first */ + for (int i = 0; i < n_order; i++) + (void) print_efi_option(order[i], &n_printed, /* in_order= */ true); + + /* print remaining entries */ + for (int i = 0; i < n_options; i++) { + for (int j = 0; j < n_order; j++) + if (options[i] == order[j]) + goto next_option; + + (void) print_efi_option(options[i], &n_printed, /* in_order= */ false); + + next_option: + continue; + } + + if (n_printed == 0) + printf("No boot loaders listed in EFI Variables.\n\n"); + + return 0; +} + +static int boot_config_load_and_select( + BootConfig *config, + const char *esp_path, + dev_t esp_devid, + const char *xbootldr_path, + dev_t xbootldr_devid) { + + int r; + + /* If XBOOTLDR and ESP actually refer to the same block device, suppress XBOOTLDR, since it would + * find the same entries twice. */ + bool same = esp_path && xbootldr_path && devnum_set_and_equal(esp_devid, xbootldr_devid); + + r = boot_config_load(config, esp_path, same ? NULL : xbootldr_path); + if (r < 0) + return r; + + if (!arg_root) { + _cleanup_strv_free_ char **efi_entries = NULL; + + r = efi_loader_get_entries(&efi_entries); + if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) + log_debug_errno(r, "Boot loader reported no entries."); + else if (r < 0) + log_warning_errno(r, "Failed to determine entries reported by boot loader, ignoring: %m"); + else + (void) boot_config_augment_from_loader(config, efi_entries, /* only_auto= */ false); + } + + return boot_config_select_special_entries(config, /* skip_efivars= */ !!arg_root); +} + +static int status_entries( + const BootConfig *config, + const char *esp_path, + sd_id128_t esp_partition_uuid, + const char *xbootldr_path, + sd_id128_t xbootldr_partition_uuid) { + + sd_id128_t dollar_boot_partition_uuid; + const char *dollar_boot_path; + int r; + + assert(config); + assert(esp_path || xbootldr_path); + + if (xbootldr_path) { + dollar_boot_path = xbootldr_path; + dollar_boot_partition_uuid = xbootldr_partition_uuid; + } else { + dollar_boot_path = esp_path; + dollar_boot_partition_uuid = esp_partition_uuid; + } + + printf("%sBoot Loader Entries:%s\n" + " $BOOT: %s", ansi_underline(), ansi_normal(), dollar_boot_path); + if (!sd_id128_is_null(dollar_boot_partition_uuid)) + printf(" (/dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR ")", + SD_ID128_FORMAT_VAL(dollar_boot_partition_uuid)); + printf("\n\n"); + + if (config->default_entry < 0) + printf("%zu entries, no entry could be determined as default.\n", config->n_entries); + else { + printf("%sDefault Boot Loader Entry:%s\n", ansi_underline(), ansi_normal()); + + r = show_boot_entry( + boot_config_default_entry(config), + /* show_as_default= */ false, + /* show_as_selected= */ false, + /* show_discovered= */ false); + if (r > 0) + /* < 0 is already logged by the function itself, let's just emit an extra warning if + the default entry is broken */ + printf("\nWARNING: default boot entry is broken\n"); + } + + 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_improved(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) + return log_notice_errno(SYNTHETIC_ERRNO(EREMOTE), + "Source file \"%s\" does not carry version information!", + from); + + r = get_file_version(fd_to, &b); + if (r < 0) + return r; + if (r == 0 || compare_product(a, b) != 0) + return log_notice_errno(SYNTHETIC_ERRNO(EREMOTE), + "Skipping \"%s\", since it's owned by another boot loader.", + to); + + r = compare_version(a, b); + log_debug("Comparing versions: \"%s\" %s \"%s", a, comparison_operator(r), b); + if (r < 0) + return log_warning_errno(SYNTHETIC_ERRNO(ESTALE), + "Skipping \"%s\", since newer boot loader version in place already.", to); + if (r == 0) + return log_info_errno(SYNTHETIC_ERRNO(ESTALE), + "Skipping \"%s\", since same boot loader version in place already.", to); + + 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_MAX, 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, 0); + + r = fsync_full(fd_to); + if (r < 0) { + (void) unlink_noerrno(t); + return log_error_errno(r, "Failed to copy data from \"%s\" to \"%s\": %m", from, t); + } + + 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) { + _cleanup_free_ char *p = NULL; + + p = path_join(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 *const esp_subdirs[] = { + /* The directories to place in the ESP */ + "EFI", + "EFI/systemd", + "EFI/BOOT", + "loader", + NULL +}; + +static const char *const dollar_boot_subdirs[] = { + /* The directories to place in the XBOOTLDR partition or the ESP, depending what exists */ + "loader", + "loader/entries", /* Type #1 entries */ + "EFI", + "EFI/Linux", /* Type #2 entries */ + NULL +}; + +static int create_subdirs(const char *root, const char * const *subdirs) { + int r; + + STRV_FOREACH(i, subdirs) { + r = mkdir_one(root, *i); + if (r < 0) + return r; + } + + return 0; +} + +static int copy_one_file(const char *esp_path, const char *name, bool force) { + char *root = IN_SET(arg_install_source, ARG_INSTALL_SOURCE_AUTO, ARG_INSTALL_SOURCE_IMAGE) ? arg_root : NULL; + _cleanup_free_ char *source_path = NULL, *dest_path = NULL, *p = NULL, *q = NULL; + const char *e; + char *dest_name, *s; + int r, ret; + + dest_name = strdupa_safe(name); + s = endswith_no_case(dest_name, ".signed"); + if (s) + *s = 0; + + p = path_join(BOOTLIBDIR, name); + if (!p) + return log_oom(); + + r = chase_symlinks(p, root, CHASE_PREFIX_ROOT, &source_path, NULL); + /* If we had a root directory to try, we didn't find it and we are in auto mode, retry on the host */ + if (r == -ENOENT && root && arg_install_source == ARG_INSTALL_SOURCE_AUTO) + r = chase_symlinks(p, NULL, CHASE_PREFIX_ROOT, &source_path, NULL); + if (r < 0) + return log_error_errno(r, + "Failed to resolve path %s%s%s: %m", + p, + root ? " under directory " : "", + strempty(root)); + + q = path_join("/EFI/systemd/", dest_name); + if (!q) + return log_oom(); + + r = chase_symlinks(q, esp_path, CHASE_PREFIX_ROOT | CHASE_NONEXISTENT, &dest_path, NULL); + if (r < 0) + return log_error_errno(r, "Failed to resolve path %s under directory %s: %m", q, esp_path); + + /* Note that if this fails we do the second copy anyway, but return this error code, + * so we stash it away in a separate variable. */ + ret = copy_file_with_version_check(source_path, dest_path, force); + + e = startswith(dest_name, "systemd-boot"); + if (e) { + _cleanup_free_ char *default_dest_path = NULL; + char *v; + + /* Create the EFI default boot loader name (specified for removable devices) */ + v = strjoina("/EFI/BOOT/BOOT", e); + ascii_strupper(strrchr(v, '/') + 1); + + r = chase_symlinks(v, esp_path, CHASE_PREFIX_ROOT | CHASE_NONEXISTENT, &default_dest_path, NULL); + if (r < 0) + return log_error_errno(r, "Failed to resolve path %s under directory %s: %m", v, esp_path); + + r = copy_file_with_version_check(source_path, default_dest_path, force); + if (r < 0 && ret == 0) + ret = r; + } + + return ret; +} + +static int install_binaries(const char *esp_path, const char *arch, bool force) { + char *root = IN_SET(arg_install_source, ARG_INSTALL_SOURCE_AUTO, ARG_INSTALL_SOURCE_IMAGE) ? arg_root : NULL; + _cleanup_closedir_ DIR *d = NULL; + _cleanup_free_ char *path = NULL; + int r; + + r = chase_symlinks_and_opendir(BOOTLIBDIR, root, CHASE_PREFIX_ROOT, &path, &d); + /* If we had a root directory to try, we didn't find it and we are in auto mode, retry on the host */ + if (r == -ENOENT && root && arg_install_source == ARG_INSTALL_SOURCE_AUTO) + r = chase_symlinks_and_opendir(BOOTLIBDIR, NULL, CHASE_PREFIX_ROOT, &path, &d); + if (r < 0) + return log_error_errno(r, "Failed to open boot loader directory %s%s: %m", strempty(root), BOOTLIBDIR); + + const char *suffix = strjoina(arch, ".efi"); + const char *suffix_signed = strjoina(arch, ".efi.signed"); + + FOREACH_DIRENT(de, d, return log_error_errno(errno, "Failed to read \"%s\": %m", path)) { + int k; + + if (!endswith_no_case(de->d_name, suffix) && !endswith_no_case(de->d_name, suffix_signed)) + continue; + + /* skip the .efi file, if there's a .signed version of it */ + if (endswith_no_case(de->d_name, ".efi")) { + _cleanup_free_ const char *s = strjoin(de->d_name, ".signed"); + if (!s) + return log_oom(); + if (faccessat(dirfd(d), s, F_OK, 0) >= 0) + continue; + } + + k = copy_one_file(esp_path, de->d_name, force); + /* Don't propagate an error code if no update necessary, installed version already equal or + * newer version, or other boot loader in place. */ + if (arg_graceful && IN_SET(k, -ESTALE, -EREMOTE)) + continue; + if (k < 0 && r == 0) + r = k; + } + + return r; +} + +static bool same_entry(uint16_t id, 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; + + /* Some motherboards convert the path to uppercase under certain circumstances + * (e.g. after booting into the Boot Menu in the ASUS ROG STRIX B350-F GAMING), + * so use case-insensitive checking */ + if (!strcaseeq_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 = efi_get_boot_options(&options); + if (n < 0) + return n; + + /* find already existing systemd-boot entry */ + for (int 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 (int i = 0; i < n; i++) + if (i != options[i]) { + *id = i; + return 0; + } + + /* use the next one */ + if (n == 0xffff) + return -ENOSPC; + *id = n; + return 0; +} + +static int insert_into_order(uint16_t slot, bool first) { + _cleanup_free_ uint16_t *order = NULL; + uint16_t *t; + int n; + + 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 (int 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 = reallocarray(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; + + n = efi_get_boot_order(&order); + if (n <= 0) + return n; + + for (int 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, + bool graceful) { + + uint16_t slot; + int r; + + if (arg_root) { + log_info("Acting on %s, skipping EFI variable setup.", + arg_image ? "image" : "root directory"); + return 0; + } + + if (!is_efi_boot()) { + log_warning("Not booted with EFI, skipping EFI variable setup."); + return 0; + } + + r = chase_symlinks_and_access(path, esp_path, CHASE_PREFIX_ROOT, F_OK, NULL, NULL); + if (r == -ENOENT) + return 0; + if (r < 0) + return log_error_errno(r, "Cannot access \"%s/%s\": %m", esp_path, path); + + r = find_slot(uuid, path, &slot); + if (r < 0) { + int level = graceful ? arg_quiet ? LOG_DEBUG : LOG_INFO : LOG_ERR; + const char *skip = graceful ? ", skipping" : ""; + + log_full_errno(level, r, + r == -ENOENT ? + "Failed to access EFI variables%s. Is the \"efivarfs\" filesystem mounted?" : + "Failed to determine current boot order%s: %m", skip); + + return graceful ? 0 : r; + } + + if (first || r == 0) { + r = efi_add_boot_option(slot, pick_efi_boot_option_description(), + part, pstart, psize, + uuid, path); + if (r < 0) { + int level = graceful ? arg_quiet ? LOG_DEBUG : LOG_INFO : LOG_ERR; + const char *skip = graceful ? ", skipping" : ""; + + log_full_errno(level, r, "Failed to create EFI Boot variable entry%s: %m", skip); + + return graceful ? 0 : r; + } + + log_info("Created EFI boot entry \"%s\".", pick_efi_boot_option_description()); + } + + return insert_into_order(slot, first); +} + +static int remove_boot_efi(const char *esp_path) { + _cleanup_closedir_ DIR *d = NULL; + _cleanup_free_ char *p = NULL; + int r, c = 0; + + r = chase_symlinks_and_opendir("/EFI/BOOT", esp_path, CHASE_PREFIX_ROOT, &p, &d); + if (r == -ENOENT) + return 0; + if (r < 0) + return log_error_errno(r, "Failed to open directory \"%s/EFI/BOOT\": %m", esp_path); + + 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) { + const char *p; + + p = prefix_roota(prefix, suffix); + if (rmdir(p) < 0) { + bool ignore = IN_SET(errno, ENOENT, ENOTEMPTY); + + log_full_errno(ignore ? LOG_DEBUG : LOG_ERR, errno, + "Failed to remove directory \"%s\": %m", p); + if (!ignore) + return -errno; + } else + log_info("Removed \"%s\".", p); + + return 0; +} + +static int remove_subdirs(const char *root, const char *const *subdirs) { + int r, q; + + /* We use recursion here to destroy the directories in reverse order. Which should be safe given how + * short the array is. */ + + if (!subdirs[0]) /* A the end of the list */ + return 0; + + r = remove_subdirs(root, subdirs + 1); + q = rmdir_one(root, subdirs[0]); + + return r < 0 ? r : q; +} + +static int remove_entry_directory(const char *root) { + assert(root); + assert(arg_make_entry_directory >= 0); + + if (!arg_make_entry_directory || !arg_entry_token) + return 0; + + return rmdir_one(root, arg_entry_token); +} + +static int remove_binaries(const char *esp_path) { + const char *p; + int r, q; + + p = prefix_roota(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; + + return r; +} + +static int remove_file(const char *root, const char *file) { + const char *p; + + assert(root); + assert(file); + + p = prefix_roota(root, file); + if (unlink(p) < 0) { + log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_ERR, errno, + "Failed to unlink file \"%s\": %m", p); + + return errno == ENOENT ? 0 : -errno; + } + + log_info("Removed \"%s\".", p); + return 1; +} + +static int remove_variables(sd_id128_t uuid, const char *path, bool in_order) { + uint16_t slot; + int r; + + if (arg_root || !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 remove_loader_variables(void) { + int r = 0; + + /* Remove all persistent loader variables we define */ + + FOREACH_STRING(var, + EFI_LOADER_VARIABLE(LoaderConfigTimeout), + EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), + EFI_LOADER_VARIABLE(LoaderEntryDefault), + EFI_LOADER_VARIABLE(LoaderEntryOneShot), + EFI_LOADER_VARIABLE(LoaderSystemToken)){ + + int q; + + q = efi_set_variable(var, NULL, 0); + if (q == -ENOENT) + continue; + if (q < 0) { + log_warning_errno(q, "Failed to remove EFI variable %s: %m", var); + if (r >= 0) + r = q; + } else + log_info("Removed EFI variable %s.", var); + } + + return r; +} + +static int install_loader_config(const char *esp_path) { + _cleanup_(unlink_and_freep) char *t = NULL; + _cleanup_fclose_ FILE *f = NULL; + const char *p; + int r; + + assert(arg_make_entry_directory >= 0); + + p = prefix_roota(esp_path, "/loader/loader.conf"); + if (access(p, F_OK) >= 0) /* Silently skip creation if the file already exists (early check) */ + return 0; + + r = fopen_tmpfile_linkable(p, O_WRONLY|O_CLOEXEC, &t, &f); + if (r < 0) + return log_error_errno(r, "Failed to open \"%s\" for writing: %m", p); + + fprintf(f, "#timeout 3\n" + "#console-mode keep\n"); + + if (arg_make_entry_directory) { + assert(arg_entry_token); + fprintf(f, "default %s-*\n", arg_entry_token); + } + + r = flink_tmpfile(f, 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 install_loader_specification(const char *root) { + _cleanup_(unlink_and_freep) char *t = NULL; + _cleanup_fclose_ FILE *f = NULL; + _cleanup_free_ char *p = NULL; + int r; + + p = path_join(root, "/loader/entries.srel"); + if (!p) + return log_oom(); + + if (access(p, F_OK) >= 0) /* Silently skip creation if the file already exists (early check) */ + return 0; + + r = fopen_tmpfile_linkable(p, O_WRONLY|O_CLOEXEC, &t, &f); + if (r < 0) + return log_error_errno(r, "Failed to open \"%s\" for writing: %m", p); + + fprintf(f, "type1\n"); + + r = flink_tmpfile(f, 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 install_entry_directory(const char *root) { + assert(root); + assert(arg_make_entry_directory >= 0); + + if (!arg_make_entry_directory) + return 0; + + assert(arg_entry_token); + return mkdir_one(root, arg_entry_token); +} + +static int install_entry_token(void) { + int r; + + assert(arg_make_entry_directory >= 0); + assert(arg_entry_token); + + /* Let's save the used entry token in /etc/kernel/entry-token if we used it to create the entry + * directory, or if anything else but the machine ID */ + + if (!arg_make_entry_directory && arg_entry_token_type == ARG_ENTRY_TOKEN_MACHINE_ID) + return 0; + + r = write_string_file("/etc/kernel/entry-token", arg_entry_token, WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_ATOMIC|WRITE_STRING_FILE_MKDIR_0755); + if (r < 0) + return log_error_errno(r, "Failed to write entry token '%s' to /etc/kernel/entry-token: %m", arg_entry_token); + + return 0; +} + +static int help(int argc, char *argv[], void *userdata) { + _cleanup_free_ char *link = NULL; + int r; + + r = terminal_urlify_man("bootctl", "1", &link); + if (r < 0) + return log_oom(); + + printf("%1$s [OPTIONS...] COMMAND ...\n" + "\n%5$sControl EFI firmware boot settings and manage boot loader.%6$s\n" + "\n%3$sGeneric EFI Firmware/Boot Loader Commands:%4$s\n" + " status Show status of installed boot loader and EFI variables\n" + " reboot-to-firmware [BOOL]\n" + " Query or set reboot-to-firmware EFI flag\n" + " systemd-efi-options [STRING]\n" + " Query or set system options string in EFI variable\n" + "\n%3$sBoot Loader Specification Commands:%4$s\n" + " list List boot loader entries\n" + " set-default ID Set default boot loader entry\n" + " set-oneshot ID Set default boot loader entry, for next boot only\n" + " set-timeout SECONDS Set the menu timeout\n" + " set-timeout-oneshot SECONDS\n" + " Set the menu timeout for the next boot only\n" + "\n%3$ssystemd-boot Commands:%4$s\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" + " is-installed Test whether systemd-boot is installed in the ESP\n" + " random-seed Initialize random seed in ESP and EFI variables\n" + "\n%3$sOptions:%4$s\n" + " -h --help Show this help\n" + " --version Print version\n" + " --esp-path=PATH Path to the EFI System Partition (ESP)\n" + " --boot-path=PATH Path to the $BOOT partition\n" + " --root=PATH Operate on an alternate filesystem root\n" + " --image=PATH Operate on disk image as filesystem root\n" + " --install-source=auto|image|host\n" + " Where to pick files when using --root=/--image=\n" + " -p --print-esp-path Print path to the EFI System Partition\n" + " -x --print-boot-path Print path to the $BOOT partition\n" + " --no-variables Don't touch EFI variables\n" + " --no-pager Do not pipe output into a pager\n" + " --graceful Don't fail when the ESP cannot be found or EFI\n" + " variables cannot be written\n" + " -q --quiet Suppress output\n" + " --make-entry-directory=yes|no|auto\n" + " Create $BOOT/ENTRY-TOKEN/ directory\n" + " --entry-token=machine-id|os-id|os-image-id|auto|literal:…\n" + " Entry token to use for this installation\n" + " --json=pretty|short|off\n" + " Generate JSON output\n" + " --all-architectures\n" + " Install all supported EFI architectures\n" + " --efi-boot-option-description=DESCRIPTION\n" + " Description of the entry in the boot option list\n" + "\nSee the %2$s for details.\n", + program_invocation_short_name, + link, + ansi_underline(), + ansi_normal(), + ansi_highlight(), + ansi_normal()); + + return 0; +} + +static int parse_argv(int argc, char *argv[]) { + enum { + ARG_ESP_PATH = 0x100, + ARG_BOOT_PATH, + ARG_ROOT, + ARG_IMAGE, + ARG_INSTALL_SOURCE, + ARG_VERSION, + ARG_NO_VARIABLES, + ARG_NO_PAGER, + ARG_GRACEFUL, + ARG_MAKE_ENTRY_DIRECTORY, + ARG_ENTRY_TOKEN, + ARG_JSON, + ARG_ARCH_ALL, + ARG_EFI_BOOT_OPTION_DESCRIPTION, + }; + + static const struct option options[] = { + { "help", no_argument, NULL, 'h' }, + { "version", no_argument, NULL, ARG_VERSION }, + { "esp-path", required_argument, NULL, ARG_ESP_PATH }, + { "path", required_argument, NULL, ARG_ESP_PATH }, /* Compatibility alias */ + { "boot-path", required_argument, NULL, ARG_BOOT_PATH }, + { "root", required_argument, NULL, ARG_ROOT }, + { "image", required_argument, NULL, ARG_IMAGE }, + { "install-source", required_argument, NULL, ARG_INSTALL_SOURCE }, + { "print-esp-path", no_argument, NULL, 'p' }, + { "print-path", no_argument, NULL, 'p' }, /* Compatibility alias */ + { "print-boot-path", no_argument, NULL, 'x' }, + { "no-variables", no_argument, NULL, ARG_NO_VARIABLES }, + { "no-pager", no_argument, NULL, ARG_NO_PAGER }, + { "graceful", no_argument, NULL, ARG_GRACEFUL }, + { "quiet", no_argument, NULL, 'q' }, + { "make-entry-directory", required_argument, NULL, ARG_MAKE_ENTRY_DIRECTORY }, + { "make-machine-id-directory", required_argument, NULL, ARG_MAKE_ENTRY_DIRECTORY }, /* Compatibility alias */ + { "entry-token", required_argument, NULL, ARG_ENTRY_TOKEN }, + { "json", required_argument, NULL, ARG_JSON }, + { "all-architectures", no_argument, NULL, ARG_ARCH_ALL }, + { "efi-boot-option-description", required_argument, NULL, ARG_EFI_BOOT_OPTION_DESCRIPTION }, + {} + }; + + int c, r; + bool b; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "hpx", options, NULL)) >= 0) + switch (c) { + + case 'h': + help(0, NULL, NULL); + return 0; + + case ARG_VERSION: + return version(); + + case ARG_ESP_PATH: + r = free_and_strdup(&arg_esp_path, optarg); + if (r < 0) + return log_oom(); + break; + + case ARG_BOOT_PATH: + r = free_and_strdup(&arg_xbootldr_path, optarg); + if (r < 0) + return log_oom(); + break; + + case ARG_ROOT: + r = parse_path_argument(optarg, /* suppress_root= */ true, &arg_root); + if (r < 0) + return r; + break; + + case ARG_IMAGE: + r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); + if (r < 0) + return r; + break; + + case ARG_INSTALL_SOURCE: + if (streq(optarg, "auto")) + arg_install_source = ARG_INSTALL_SOURCE_AUTO; + else if (streq(optarg, "image")) + arg_install_source = ARG_INSTALL_SOURCE_IMAGE; + else if (streq(optarg, "host")) + arg_install_source = ARG_INSTALL_SOURCE_HOST; + else + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Unexpected parameter for --install-source=: %s", optarg); + + break; + + case 'p': + if (arg_print_dollar_boot_path) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "--print-boot-path/-x cannot be combined with --print-esp-path/-p"); + arg_print_esp_path = true; + break; + + case 'x': + if (arg_print_esp_path) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "--print-boot-path/-x cannot be combined with --print-esp-path/-p"); + arg_print_dollar_boot_path = true; + break; + + case ARG_NO_VARIABLES: + arg_touch_variables = false; + break; + + case ARG_NO_PAGER: + arg_pager_flags |= PAGER_DISABLE; + break; + + case ARG_GRACEFUL: + arg_graceful = true; + break; + + case 'q': + arg_quiet = true; + break; + + case ARG_ENTRY_TOKEN: { + const char *e; + + if (streq(optarg, "machine-id")) { + arg_entry_token_type = ARG_ENTRY_TOKEN_MACHINE_ID; + arg_entry_token = mfree(arg_entry_token); + } else if (streq(optarg, "os-image-id")) { + arg_entry_token_type = ARG_ENTRY_TOKEN_OS_IMAGE_ID; + arg_entry_token = mfree(arg_entry_token); + } else if (streq(optarg, "os-id")) { + arg_entry_token_type = ARG_ENTRY_TOKEN_OS_ID; + arg_entry_token = mfree(arg_entry_token); + } else if ((e = startswith(optarg, "literal:"))) { + arg_entry_token_type = ARG_ENTRY_TOKEN_LITERAL; + + r = free_and_strdup_warn(&arg_entry_token, e); + if (r < 0) + return r; + } else + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Unexpected parameter for --entry-token=: %s", optarg); + + break; + } + + case ARG_MAKE_ENTRY_DIRECTORY: + if (streq(optarg, "auto")) /* retained for backwards compatibility */ + arg_make_entry_directory = -1; /* yes if machine-id is permanent */ + else { + r = parse_boolean_argument("--make-entry-directory=", optarg, &b); + if (r < 0) + return r; + + arg_make_entry_directory = b; + } + break; + + case ARG_JSON: + r = parse_json_argument(optarg, &arg_json_format_flags); + if (r <= 0) + return r; + break; + + case ARG_ARCH_ALL: + arg_arch_all = true; + break; + + case ARG_EFI_BOOT_OPTION_DESCRIPTION: + if (isempty(optarg) || !(string_is_safe(optarg) && utf8_is_valid(optarg))) { + _cleanup_free_ char *escaped = NULL; + + escaped = cescape(optarg); + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Invalid --efi-boot-option-description=: %s", strna(escaped)); + } + if (strlen(optarg) > EFI_BOOT_OPTION_DESCRIPTION_MAX) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "--efi-boot-option-description= too long: %zu > %zu", strlen(optarg), EFI_BOOT_OPTION_DESCRIPTION_MAX); + r = free_and_strdup_warn(&arg_efi_boot_option_description, optarg); + if (r < 0) + return r; + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached(); + } + + if ((arg_root || arg_image) && argv[optind] && !STR_IN_SET(argv[optind], "status", "list", + "install", "update", "remove", "is-installed", "random-seed")) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Options --root= and --image= are not supported with verb %s.", + argv[optind]); + + if (arg_root && arg_image) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported."); + + if (arg_install_source != ARG_INSTALL_SOURCE_AUTO && !arg_root && !arg_image) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "--install-from-host is only supported with --root= or --image=."); + + return 1; +} + +static void read_efi_var(const char *variable, char **ret) { + int r; + + r = efi_get_variable_string(variable, ret); + if (r < 0 && r != -ENOENT) + log_warning_errno(r, "Failed to read EFI variable %s: %m", variable); +} + +static void print_yes_no_line(bool first, bool good, const char *name) { + printf("%s%s %s\n", + first ? " Features: " : " ", + COLOR_MARK_BOOL(good), + name); +} + +static int are_we_installed(const char *esp_path) { + int r; + + /* Tests whether systemd-boot is installed. It's not obvious what to use as check here: we could + * check EFI variables, we could check what binary /EFI/BOOT/BOOT*.EFI points to, or whether the + * loader entries directory exists. Here we opted to check whether /EFI/systemd/ is non-empty, which + * should be a suitable and very minimal check for a number of reasons: + * + * → The check is architecture independent (i.e. we check if any systemd-boot loader is installed, + * not a specific one.) + * + * → It doesn't assume we are the only boot loader (i.e doesn't check if we own the main + * /EFI/BOOT/BOOT*.EFI fallback binary. + * + * → It specifically checks for systemd-boot, not for other boot loaders (which a check for + * /boot/loader/entries would do). */ + + _cleanup_free_ char *p = path_join(esp_path, "/EFI/systemd/"); + if (!p) + return log_oom(); + + log_debug("Checking whether %s contains any files%s", p, special_glyph(SPECIAL_GLYPH_ELLIPSIS)); + r = dir_is_empty(p, /* ignore_hidden_or_backup= */ false); + if (r < 0 && r != -ENOENT) + return log_error_errno(r, "Failed to check whether %s contains any files: %m", p); + + return r == 0; +} + +static int verb_status(int argc, char *argv[], void *userdata) { + sd_id128_t esp_uuid = SD_ID128_NULL, xbootldr_uuid = SD_ID128_NULL; + dev_t esp_devid = 0, xbootldr_devid = 0; + int r, k; + + r = acquire_esp(/* unprivileged_mode= */ geteuid() != 0, /* graceful= */ false, NULL, NULL, NULL, &esp_uuid, &esp_devid); + if (arg_print_esp_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 location: %m"); + if (r < 0) + return r; + + puts(arg_esp_path); + } + + r = acquire_xbootldr(/* unprivileged_mode= */ geteuid() != 0, &xbootldr_uuid, &xbootldr_devid); + if (arg_print_dollar_boot_path) { + if (r == -EACCES) + return log_error_errno(r, "Failed to determine XBOOTLDR partition: %m"); + if (r < 0) + return r; + + const char *path = arg_dollar_boot_path(); + if (!path) + return log_error_errno(SYNTHETIC_ERRNO(EACCES), "Failed to determine XBOOTLDR location: %m"); + + puts(path); + } + + if (arg_print_esp_path || arg_print_dollar_boot_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 */ + + pager_open(arg_pager_flags); + + if (!arg_root && is_efi_boot()) { + static const struct { + uint64_t flag; + const char *name; + } loader_flags[] = { + { EFI_LOADER_FEATURE_BOOT_COUNTING, "Boot counting" }, + { EFI_LOADER_FEATURE_CONFIG_TIMEOUT, "Menu timeout control" }, + { EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT, "One-shot menu timeout control" }, + { EFI_LOADER_FEATURE_ENTRY_DEFAULT, "Default entry control" }, + { EFI_LOADER_FEATURE_ENTRY_ONESHOT, "One-shot entry control" }, + { EFI_LOADER_FEATURE_XBOOTLDR, "Support for XBOOTLDR partition" }, + { EFI_LOADER_FEATURE_RANDOM_SEED, "Support for passing random seed to OS" }, + { EFI_LOADER_FEATURE_LOAD_DRIVER, "Load drop-in drivers" }, + { EFI_LOADER_FEATURE_SORT_KEY, "Support Type #1 sort-key field" }, + { EFI_LOADER_FEATURE_SAVED_ENTRY, "Support @saved pseudo-entry" }, + { EFI_LOADER_FEATURE_DEVICETREE, "Support Type #1 devicetree field" }, + }; + static const struct { + uint64_t flag; + const char *name; + } stub_flags[] = { + { EFI_STUB_FEATURE_REPORT_BOOT_PARTITION, "Stub sets ESP information" }, + { EFI_STUB_FEATURE_PICK_UP_CREDENTIALS, "Picks up credentials from boot partition" }, + { EFI_STUB_FEATURE_PICK_UP_SYSEXTS, "Picks up system extension images from boot partition" }, + { EFI_STUB_FEATURE_THREE_PCRS, "Measures kernel+command line+sysexts" }, + }; + _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; + uint64_t loader_features = 0, stub_features = 0; + Tpm2Support s; + int have; + + read_efi_var(EFI_LOADER_VARIABLE(LoaderFirmwareType), &fw_type); + read_efi_var(EFI_LOADER_VARIABLE(LoaderFirmwareInfo), &fw_info); + read_efi_var(EFI_LOADER_VARIABLE(LoaderInfo), &loader); + read_efi_var(EFI_LOADER_VARIABLE(StubInfo), &stub); + read_efi_var(EFI_LOADER_VARIABLE(LoaderImageIdentifier), &loader_path); + (void) efi_loader_get_features(&loader_features); + (void) efi_stub_get_features(&stub_features); + + 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"); + + SecureBootMode secure = efi_get_secure_boot_mode(); + printf("%sSystem:%s\n", ansi_underline(), ansi_normal()); + printf(" Firmware: %s%s (%s)%s\n", ansi_highlight(), strna(fw_type), strna(fw_info), ansi_normal()); + printf(" Firmware Arch: %s\n", get_efi_arch()); + printf(" Secure Boot: %sd (%s)\n", + enable_disable(IN_SET(secure, SECURE_BOOT_USER, SECURE_BOOT_DEPLOYED)), + secure_boot_mode_to_string(secure)); + + s = tpm2_support(); + printf(" TPM2 Support: %s%s%s\n", + FLAGS_SET(s, TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER) ? ansi_highlight_green() : + (s & (TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER)) != 0 ? ansi_highlight_red() : ansi_highlight_yellow(), + FLAGS_SET(s, TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER) ? "yes" : + (s & TPM2_SUPPORT_FIRMWARE) ? "firmware only, driver unavailable" : + (s & TPM2_SUPPORT_DRIVER) ? "driver only, firmware unavailable" : "no", + ansi_normal()); + + k = efi_get_reboot_to_firmware(); + if (k > 0) + printf(" Boot into FW: %sactive%s\n", ansi_highlight_yellow(), ansi_normal()); + else if (k == 0) + printf(" Boot into FW: supported\n"); + else if (k == -EOPNOTSUPP) + printf(" Boot into FW: not supported\n"); + else { + errno = -k; + printf(" Boot into FW: %sfailed%s (%m)\n", ansi_highlight_red(), ansi_normal()); + } + printf("\n"); + + printf("%sCurrent Boot Loader:%s\n", ansi_underline(), ansi_normal()); + printf(" Product: %s%s%s\n", ansi_highlight(), strna(loader), ansi_normal()); + + for (size_t i = 0; i < ELEMENTSOF(loader_flags); i++) + print_yes_no_line(i == 0, FLAGS_SET(loader_features, loader_flags[i].flag), loader_flags[i].name); + + sd_id128_t bootloader_esp_uuid; + bool have_bootloader_esp_uuid = efi_loader_get_device_part_uuid(&bootloader_esp_uuid) >= 0; + + print_yes_no_line(false, have_bootloader_esp_uuid, "Boot loader sets ESP information"); + if (have_bootloader_esp_uuid && !sd_id128_is_null(esp_uuid) && + !sd_id128_equal(esp_uuid, bootloader_esp_uuid)) + printf("WARNING: The boot loader reports a different ESP UUID than detected ("SD_ID128_UUID_FORMAT_STR" vs. "SD_ID128_UUID_FORMAT_STR")!\n", + SD_ID128_FORMAT_VAL(bootloader_esp_uuid), + SD_ID128_FORMAT_VAL(esp_uuid)); + + if (stub) { + printf(" Stub: %s\n", stub); + for (size_t i = 0; i < ELEMENTSOF(stub_flags); i++) + print_yes_no_line(i == 0, FLAGS_SET(stub_features, stub_flags[i].flag), stub_flags[i].name); + } + if (!sd_id128_is_null(loader_part_uuid)) + printf(" ESP: /dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR "\n", + SD_ID128_FORMAT_VAL(loader_part_uuid)); + else + printf(" ESP: n/a\n"); + printf(" File: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), strna(loader_path)); + printf("\n"); + + printf("%sRandom Seed:%s\n", ansi_underline(), ansi_normal()); + have = access(EFIVAR_PATH(EFI_LOADER_VARIABLE(LoaderRandomSeed)), F_OK) >= 0; + printf(" Passed to OS: %s\n", yes_no(have)); + have = access(EFIVAR_PATH(EFI_LOADER_VARIABLE(LoaderSystemToken)), F_OK) >= 0; + printf(" System Token: %s\n", have ? "set" : "not set"); + + if (arg_esp_path) { + _cleanup_free_ char *p = NULL; + + p = path_join(arg_esp_path, "/loader/random-seed"); + if (!p) + return log_oom(); + + have = access(p, F_OK) >= 0; + printf(" Exists: %s\n", yes_no(have)); + } + + printf("\n"); + } else + printf("%sSystem:%s\n" + "Not booted with EFI\n\n", + ansi_underline(), ansi_normal()); + + if (arg_esp_path) { + k = status_binaries(arg_esp_path, esp_uuid); + if (k < 0) + r = k; + } + + if (!arg_root && is_efi_boot()) { + k = status_variables(); + if (k < 0) + r = k; + } + + if (arg_esp_path || arg_xbootldr_path) { + _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL; + + k = boot_config_load_and_select(&config, + arg_esp_path, esp_devid, + arg_xbootldr_path, xbootldr_devid); + if (k < 0) + r = k; + else { + k = status_entries(&config, + arg_esp_path, esp_uuid, + arg_xbootldr_path, xbootldr_uuid); + if (k < 0) + r = k; + } + } + + return r; +} + +static int verb_list(int argc, char *argv[], void *userdata) { + _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL; + dev_t esp_devid = 0, xbootldr_devid = 0; + 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(/* unprivileged_mode= */ geteuid() != 0, /* graceful= */ false, NULL, NULL, NULL, NULL, &esp_devid); + 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 location: %m"); + if (r < 0) + return r; + + r = acquire_xbootldr(/* unprivileged_mode= */ geteuid() != 0, NULL, &xbootldr_devid); + if (r == -EACCES) + return log_error_errno(r, "Failed to determine XBOOTLDR partition: %m"); + if (r < 0) + return r; + + r = boot_config_load_and_select(&config, arg_esp_path, esp_devid, arg_xbootldr_path, xbootldr_devid); + if (r < 0) + return r; + + if (config.n_entries == 0 && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) { + log_info("No boot loader entries found."); + return 0; + } + + pager_open(arg_pager_flags); + return show_boot_entries(&config, arg_json_format_flags); +} + +static int install_random_seed(const char *esp) { + _cleanup_(unlink_and_freep) char *tmp = NULL; + _cleanup_free_ void *buffer = NULL; + _cleanup_free_ char *path = NULL; + _cleanup_close_ int fd = -1; + size_t sz, token_size; + ssize_t n; + int r; + + assert(esp); + + path = path_join(esp, "/loader/random-seed"); + if (!path) + return log_oom(); + + sz = random_pool_size(); + + buffer = malloc(sz); + if (!buffer) + return log_oom(); + + r = crypto_random_bytes(buffer, sz); + if (r < 0) + return log_error_errno(r, "Failed to acquire random seed: %m"); + + /* Normally create_subdirs() should already have created everything we need, but in case "bootctl + * random-seed" is called we want to just create the minimum we need for it, and not the full + * list. */ + r = mkdir_parents(path, 0755); + if (r < 0) + return log_error_errno(r, "Failed to create parent directory for %s: %m", path); + + r = tempfn_random(path, "bootctl", &tmp); + if (r < 0) + return log_oom(); + + fd = open(tmp, O_CREAT|O_EXCL|O_NOFOLLOW|O_NOCTTY|O_WRONLY|O_CLOEXEC, 0600); + if (fd < 0) { + tmp = mfree(tmp); + return log_error_errno(fd, "Failed to open random seed file for writing: %m"); + } + + n = write(fd, buffer, sz); + if (n < 0) + return log_error_errno(errno, "Failed to write random seed file: %m"); + if ((size_t) n != sz) + return log_error_errno(SYNTHETIC_ERRNO(EIO), "Short write while writing random seed file."); + + if (rename(tmp, path) < 0) + return log_error_errno(r, "Failed to move random seed file into place: %m"); + + tmp = mfree(tmp); + + log_info("Random seed file %s successfully written (%zu bytes).", path, sz); + + if (!arg_touch_variables) + return 0; + + if (!is_efi_boot()) { + log_notice("Not booted with EFI, skipping EFI variable setup."); + return 0; + } + + if (arg_root) { + log_warning("Acting on %s, skipping EFI variable setup.", + arg_image ? "image" : "root directory"); + return 0; + } + + r = getenv_bool("SYSTEMD_WRITE_SYSTEM_TOKEN"); + if (r < 0) { + if (r != -ENXIO) + log_warning_errno(r, "Failed to parse $SYSTEMD_WRITE_SYSTEM_TOKEN, ignoring."); + + if (detect_vm() > 0) { + /* Let's not write a system token if we detect we are running in a VM + * environment. Why? Our default security model for the random seed uses the system + * token as a mechanism to ensure we are not vulnerable to golden master sloppiness + * issues, i.e. that people initialize the random seed file, then copy the image to + * many systems and end up with the same random seed in each that is assumed to be + * valid but in reality is the same for all machines. By storing a system token in + * the EFI variable space we can make sure that even though the random seeds on disk + * are all the same they will be different on each system under the assumption that + * the EFI variable space is maintained separate from the random seed storage. That + * is generally the case on physical systems, as the ESP is stored on persistent + * storage, and the EFI variables in NVRAM. However in virtualized environments this + * is generally not true: the EFI variable set is typically stored along with the + * disk image itself. For example, using the OVMF EFI firmware the EFI variables are + * stored in a file in the ESP itself. */ + + log_notice("Not installing system token, since we are running in a virtualized environment."); + return 0; + } + } else if (r == 0) { + log_notice("Not writing system token, because $SYSTEMD_WRITE_SYSTEM_TOKEN is set to false."); + return 0; + } + + r = efi_get_variable(EFI_LOADER_VARIABLE(LoaderSystemToken), NULL, NULL, &token_size); + if (r == -ENODATA) + log_debug_errno(r, "LoaderSystemToken EFI variable is invalid (too short?), replacing."); + else if (r < 0) { + if (r != -ENOENT) + return log_error_errno(r, "Failed to test system token validity: %m"); + } else { + if (token_size >= sz) { + /* Let's avoid writes if we can, and initialize this only once. */ + log_debug("System token already written, not updating."); + return 0; + } + + log_debug("Existing system token size (%zu) does not match our expectations (%zu), replacing.", token_size, sz); + } + + r = crypto_random_bytes(buffer, sz); + if (r < 0) + return log_error_errno(r, "Failed to acquire random seed: %m"); + + /* Let's write this variable with an umask in effect, so that unprivileged users can't see the token + * and possibly get identification information or too much insight into the kernel's entropy pool + * state. */ + RUN_WITH_UMASK(0077) { + r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderSystemToken), buffer, sz); + if (r < 0) { + if (!arg_graceful) + return log_error_errno(r, "Failed to write 'LoaderSystemToken' EFI variable: %m"); + + if (r == -EINVAL) + log_warning_errno(r, "Unable to write 'LoaderSystemToken' EFI variable (firmware problem?), ignoring: %m"); + else + log_warning_errno(r, "Unable to write 'LoaderSystemToken' EFI variable, ignoring: %m"); + } else + log_info("Successfully initialized system token in EFI variable with %zu bytes.", sz); + } + + return 0; +} + +static int sync_everything(void) { + int ret = 0, k; + + if (arg_esp_path) { + k = syncfs_path(AT_FDCWD, arg_esp_path); + if (k < 0) + ret = log_error_errno(k, "Failed to synchronize the ESP '%s': %m", arg_esp_path); + } + + if (arg_xbootldr_path) { + k = syncfs_path(AT_FDCWD, arg_xbootldr_path); + if (k < 0) + ret = log_error_errno(k, "Failed to synchronize $BOOT '%s': %m", arg_xbootldr_path); + } + + return ret; +} + +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, graceful; + int r; + + /* Invoked for both "update" and "install" */ + + install = streq(argv[0], "install"); + graceful = !install && arg_graceful; /* support graceful mode for updates */ + + r = acquire_esp(/* unprivileged_mode= */ false, graceful, &part, &pstart, &psize, &uuid, NULL); + if (graceful && r == -ENOKEY) + return 0; /* If --graceful is specified and we can't find an ESP, handle this cleanly */ + if (r < 0) + return r; + + if (!install) { + /* If we are updating, don't do anything if sd-boot wasn't actually installed. */ + r = are_we_installed(arg_esp_path); + if (r < 0) + return r; + if (r == 0) { + log_debug("Skipping update because sd-boot is not installed in the ESP."); + return 0; + } + } + + r = acquire_xbootldr(/* unprivileged_mode= */ false, NULL, NULL); + if (r < 0) + return r; + + r = settle_make_entry_directory(); + if (r < 0) + return r; + + const char *arch = arg_arch_all ? "" : get_efi_arch(); + + RUN_WITH_UMASK(0002) { + if (install) { + /* 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_subdirs(arg_esp_path, esp_subdirs); + if (r < 0) + return r; + + r = create_subdirs(arg_dollar_boot_path(), dollar_boot_subdirs); + if (r < 0) + return r; + } + + r = install_binaries(arg_esp_path, arch, install); + if (r < 0) + return r; + + if (install) { + r = install_loader_config(arg_esp_path); + if (r < 0) + return r; + + r = install_entry_directory(arg_dollar_boot_path()); + if (r < 0) + return r; + + r = install_entry_token(); + if (r < 0) + return r; + + r = install_random_seed(arg_esp_path); + if (r < 0) + return r; + } + + r = install_loader_specification(arg_dollar_boot_path()); + if (r < 0) + return r; + } + + (void) sync_everything(); + + if (!arg_touch_variables) + return 0; + + if (arg_arch_all) { + log_info("Not changing EFI variables with --all-architectures."); + return 0; + } + + char *path = strjoina("/EFI/systemd/systemd-boot", arch, ".efi"); + return install_variables(arg_esp_path, part, pstart, psize, uuid, path, install, graceful); +} + +static int verb_remove(int argc, char *argv[], void *userdata) { + sd_id128_t uuid = SD_ID128_NULL; + int r, q; + + r = acquire_esp(/* unprivileged_mode= */ false, /* graceful= */ false, NULL, NULL, NULL, &uuid, NULL); + if (r < 0) + return r; + + r = acquire_xbootldr(/* unprivileged_mode= */ false, NULL, NULL); + if (r < 0) + return r; + + r = settle_make_entry_directory(); + if (r < 0) + return r; + + r = remove_binaries(arg_esp_path); + + q = remove_file(arg_esp_path, "/loader/loader.conf"); + if (q < 0 && r >= 0) + r = q; + + q = remove_file(arg_esp_path, "/loader/random-seed"); + if (q < 0 && r >= 0) + r = q; + + q = remove_file(arg_esp_path, "/loader/entries.srel"); + if (q < 0 && r >= 0) + r = q; + + q = remove_subdirs(arg_esp_path, esp_subdirs); + if (q < 0 && r >= 0) + r = q; + + q = remove_subdirs(arg_esp_path, dollar_boot_subdirs); + if (q < 0 && r >= 0) + r = q; + + q = remove_entry_directory(arg_esp_path); + if (q < 0 && r >= 0) + r = q; + + if (arg_xbootldr_path) { + /* Remove a subset of these also from the XBOOTLDR partition if it exists */ + + q = remove_file(arg_xbootldr_path, "/loader/entries.srel"); + if (q < 0 && r >= 0) + r = q; + + q = remove_subdirs(arg_xbootldr_path, dollar_boot_subdirs); + if (q < 0 && r >= 0) + r = q; + + q = remove_entry_directory(arg_xbootldr_path); + if (q < 0 && r >= 0) + r = q; + } + + (void) sync_everything(); + + if (!arg_touch_variables) + return r; + + if (arg_arch_all) { + log_info("Not changing EFI variables with --all-architectures."); + return r; + } + + char *path = strjoina("/EFI/systemd/systemd-boot", get_efi_arch(), ".efi"); + q = remove_variables(uuid, path, true); + if (q < 0 && r >= 0) + r = q; + + q = remove_loader_variables(); + if (q < 0 && r >= 0) + r = q; + + return r; +} + +static int verb_is_installed(int argc, char *argv[], void *userdata) { + int r; + + r = acquire_esp(/* privileged_mode= */ false, + /* graceful= */ arg_graceful, + NULL, NULL, NULL, NULL, NULL); + if (r < 0) + return r; + + r = are_we_installed(arg_esp_path); + if (r < 0) + return r; + + if (r > 0) { + if (!arg_quiet) + puts("yes"); + return EXIT_SUCCESS; + } else { + if (!arg_quiet) + puts("no"); + return EXIT_FAILURE; + } +} + +static int parse_timeout(const char *arg1, char16_t **ret_timeout, size_t *ret_timeout_size) { + char utf8[DECIMAL_STR_MAX(usec_t)]; + char16_t *encoded; + usec_t timeout; + int r; + + assert(arg1); + assert(ret_timeout); + assert(ret_timeout_size); + + if (streq(arg1, "menu-force")) + timeout = USEC_INFINITY; + else if (streq(arg1, "menu-hidden")) + timeout = 0; + else { + r = parse_time(arg1, &timeout, USEC_PER_SEC); + if (r < 0) + return log_error_errno(r, "Failed to parse timeout '%s': %m", arg1); + if (timeout != USEC_INFINITY && timeout > UINT32_MAX * USEC_PER_SEC) + log_warning("Timeout is too long and will be treated as 'menu-force' instead."); + } + + xsprintf(utf8, USEC_FMT, MIN(timeout / USEC_PER_SEC, UINT32_MAX)); + + encoded = utf8_to_utf16(utf8, strlen(utf8)); + if (!encoded) + return log_oom(); + + *ret_timeout = encoded; + *ret_timeout_size = char16_strlen(encoded) * 2 + 2; + return 0; +} + +static int parse_loader_entry_target_arg(const char *arg1, char16_t **ret_target, size_t *ret_target_size) { + char16_t *encoded = NULL; + int r; + + assert(arg1); + assert(ret_target); + assert(ret_target_size); + + if (streq(arg1, "@current")) { + r = efi_get_variable(EFI_LOADER_VARIABLE(LoaderEntrySelected), NULL, (void *) ret_target, ret_target_size); + if (r < 0) + return log_error_errno(r, "Failed to get EFI variable 'LoaderEntrySelected': %m"); + + } else if (streq(arg1, "@oneshot")) { + r = efi_get_variable(EFI_LOADER_VARIABLE(LoaderEntryOneShot), NULL, (void *) ret_target, ret_target_size); + if (r < 0) + return log_error_errno(r, "Failed to get EFI variable 'LoaderEntryOneShot': %m"); + + } else if (streq(arg1, "@default")) { + r = efi_get_variable(EFI_LOADER_VARIABLE(LoaderEntryDefault), NULL, (void *) ret_target, ret_target_size); + if (r < 0) + return log_error_errno(r, "Failed to get EFI variable 'LoaderEntryDefault': %m"); + + } else if (arg1[0] == '@' && !streq(arg1, "@saved")) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unsupported special entry identifier: %s", arg1); + else { + encoded = utf8_to_utf16(arg1, strlen(arg1)); + if (!encoded) + return log_oom(); + + *ret_target = encoded; + *ret_target_size = char16_strlen(encoded) * 2 + 2; + } + + return 0; +} + +static int verb_set_efivar(int argc, char *argv[], void *userdata) { + int r; + + if (arg_root) + return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), + "Acting on %s, skipping EFI variable setup.", + arg_image ? "image" : "root directory"); + + if (!is_efi_boot()) + return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), + "Not booted with UEFI."); + + if (access(EFIVAR_PATH(EFI_LOADER_VARIABLE(LoaderInfo)), F_OK) < 0) { + if (errno == ENOENT) { + log_error_errno(errno, "Not booted with a supported boot loader."); + return -EOPNOTSUPP; + } + + return log_error_errno(errno, "Failed to detect whether boot loader supports '%s' operation: %m", argv[0]); + } + + if (detect_container() > 0) + return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), + "'%s' operation not supported in a container.", + argv[0]); + + if (!arg_touch_variables) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "'%s' operation cannot be combined with --no-variables.", + argv[0]); + + const char *variable; + int (* arg_parser)(const char *, char16_t **, size_t *); + + if (streq(argv[0], "set-default")) { + variable = EFI_LOADER_VARIABLE(LoaderEntryDefault); + arg_parser = parse_loader_entry_target_arg; + } else if (streq(argv[0], "set-oneshot")) { + variable = EFI_LOADER_VARIABLE(LoaderEntryOneShot); + arg_parser = parse_loader_entry_target_arg; + } else if (streq(argv[0], "set-timeout")) { + variable = EFI_LOADER_VARIABLE(LoaderConfigTimeout); + arg_parser = parse_timeout; + } else if (streq(argv[0], "set-timeout-oneshot")) { + variable = EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot); + arg_parser = parse_timeout; + } else + assert_not_reached(); + + if (isempty(argv[1])) { + r = efi_set_variable(variable, NULL, 0); + if (r < 0 && r != -ENOENT) + return log_error_errno(r, "Failed to remove EFI variable '%s': %m", variable); + } else { + _cleanup_free_ char16_t *value = NULL; + size_t value_size = 0; + + r = arg_parser(argv[1], &value, &value_size); + if (r < 0) + return r; + r = efi_set_variable(variable, value, value_size); + if (r < 0) + return log_error_errno(r, "Failed to update EFI variable '%s': %m", variable); + } + + return 0; +} + +static int verb_random_seed(int argc, char *argv[], void *userdata) { + int r; + + r = find_esp_and_warn(arg_root, arg_esp_path, false, &arg_esp_path, NULL, NULL, NULL, NULL, NULL); + if (r == -ENOKEY) { + /* find_esp_and_warn() doesn't warn about ENOKEY, so let's do that on our own */ + if (!arg_graceful) + return log_error_errno(r, "Unable to find ESP."); + + log_notice("No ESP found, not initializing random seed."); + return 0; + } + if (r < 0) + return r; + + r = install_random_seed(arg_esp_path); + if (r < 0) + return r; + + (void) sync_everything(); + return 0; +} + +static int verb_systemd_efi_options(int argc, char *argv[], void *userdata) { + int r; + + if (argc == 1) { + _cleanup_free_ char *line = NULL, *new = NULL; + + r = systemd_efi_options_variable(&line); + if (r == -ENODATA) + log_debug("No SystemdOptions EFI variable present in cache."); + else if (r < 0) + return log_error_errno(r, "Failed to read SystemdOptions EFI variable from cache: %m"); + else + puts(line); + + r = systemd_efi_options_efivarfs_if_newer(&new); + if (r == -ENODATA) { + if (line) + log_notice("Note: SystemdOptions EFI variable has been removed since boot."); + } else if (r < 0) + log_warning_errno(r, "Failed to check SystemdOptions EFI variable in efivarfs, ignoring: %m"); + else if (new && !streq_ptr(line, new)) + log_notice("Note: SystemdOptions EFI variable has been modified since boot. New value: %s", + new); + } else { + r = efi_set_variable_string(EFI_SYSTEMD_VARIABLE(SystemdOptions), argv[1]); + if (r < 0) + return log_error_errno(r, "Failed to set SystemdOptions EFI variable: %m"); + } + + return 0; +} + +static int verb_reboot_to_firmware(int argc, char *argv[], void *userdata) { + int r; + + if (argc < 2) { + r = efi_get_reboot_to_firmware(); + if (r > 0) { + puts("active"); + return EXIT_SUCCESS; /* success */ + } + if (r == 0) { + puts("supported"); + return 1; /* recognizable error #1 */ + } + if (r == -EOPNOTSUPP) { + puts("not supported"); + return 2; /* recognizable error #2 */ + } + + log_error_errno(r, "Failed to query reboot-to-firmware state: %m"); + return 3; /* other kind of error */ + } else { + r = parse_boolean(argv[1]); + if (r < 0) + return log_error_errno(r, "Failed to parse argument: %s", argv[1]); + + r = efi_set_reboot_to_firmware(r); + if (r < 0) + return log_error_errno(r, "Failed to set reboot-to-firmware option: %m"); + + return 0; + } +} + +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 }, + { "install", VERB_ANY, 1, 0, verb_install }, + { "update", VERB_ANY, 1, 0, verb_install }, + { "remove", VERB_ANY, 1, 0, verb_remove }, + { "is-installed", VERB_ANY, 1, 0, verb_is_installed }, + { "list", VERB_ANY, 1, 0, verb_list }, + { "set-default", 2, 2, 0, verb_set_efivar }, + { "set-oneshot", 2, 2, 0, verb_set_efivar }, + { "set-timeout", 2, 2, 0, verb_set_efivar }, + { "set-timeout-oneshot", 2, 2, 0, verb_set_efivar }, + { "random-seed", VERB_ANY, 1, 0, verb_random_seed }, + { "systemd-efi-options", VERB_ANY, 2, 0, verb_systemd_efi_options }, + { "reboot-to-firmware", VERB_ANY, 2, 0, verb_reboot_to_firmware }, + {} + }; + + return dispatch_verb(argc, argv, verbs, NULL); +} + +static int run(int argc, char *argv[]) { + _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; + _cleanup_(umount_and_rmdir_and_freep) char *unlink_dir = NULL; + int r; + + log_parse_environment(); + log_open(); + + /* If we run in a container, automatically turn off EFI file system access */ + if (detect_container() > 0) + arg_touch_variables = false; + + r = parse_argv(argc, argv); + if (r <= 0) + return r; + + /* Open up and mount the image */ + if (arg_image) { + assert(!arg_root); + + r = mount_image_privately_interactively( + arg_image, + DISSECT_IMAGE_GENERIC_ROOT | + DISSECT_IMAGE_RELAX_VAR_CHECK, + &unlink_dir, + &loop_device); + if (r < 0) + return r; + + arg_root = strdup(unlink_dir); + if (!arg_root) + return log_oom(); + } + + return bootctl_main(argc, argv); +} + +DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |