| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| |
| #include "bootctl.h" |
| #include "bootctl-install.h" |
| #include "bootctl-random-seed.h" |
| #include "bootctl-util.h" |
| #include "chase-symlinks.h" |
| #include "copy.h" |
| #include "dirent-util.h" |
| #include "efi-api.h" |
| #include "env-file.h" |
| #include "fd-util.h" |
| #include "fileio.h" |
| #include "fs-util.h" |
| #include "glyph-util.h" |
| #include "id128-util.h" |
| #include "os-util.h" |
| #include "path-util.h" |
| #include "rm-rf.h" |
| #include "stat-util.h" |
| #include "sync-util.h" |
| #include "tmpfile-util.h" |
| #include "umask-util.h" |
| #include "utf8.h" |
| |
| static int load_etc_machine_id(void) { |
| int r; |
| |
| r = sd_id128_get_machine(&arg_machine_id); |
| if (r < 0) { |
| if (ERRNO_IS_MACHINE_ID_UNSET(r)) /* Not set or empty */ |
| return 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 *p = NULL, *s = NULL, *layout = NULL; |
| int r; |
| |
| p = path_join(arg_root, "etc/machine-info"); |
| if (!p) |
| return log_oom(); |
| |
| r = parse_env_file(NULL, p, |
| "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 /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, *p = NULL; |
| int r; |
| |
| p = path_join(arg_root, etc_kernel(), "install.conf"); |
| if (!p) |
| return log_oom(); |
| |
| r = parse_env_file(NULL, p, "layout", &layout); |
| if (r == -ENOENT) |
| return 0; |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse %s: %m", p); |
| |
| if (!isempty(layout)) { |
| log_debug("layout=%s is specified in %s.", layout, p); |
| free_and_replace(arg_install_layout, layout); |
| } |
| |
| 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; |
| } |
| |
| 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 = -EBADF, fd_to = -EBADF; |
| _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(); |
| |
| 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|CHASE_PROHIBIT_SYMLINKS, &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|CHASE_PROHIBIT_SYMLINKS, &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_PROHIBIT_SYMLINKS|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_PROHIBIT_SYMLINKS|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|CHASE_PROHIBIT_SYMLINKS, &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|CHASE_PROHIBIT_SYMLINKS, &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 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) { |
| _cleanup_free_ char* p = NULL; |
| 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; |
| |
| p = path_join(arg_root, etc_kernel(), "entry-token"); |
| if (!p) |
| return log_oom(); |
| |
| r = write_string_file(p, 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 %s: %m", arg_entry_token, p); |
| |
| return 0; |
| } |
| |
| 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 const char *pick_efi_boot_option_description(void) { |
| return arg_efi_boot_option_description ?: "Linux Boot Manager"; |
| } |
| |
| 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|CHASE_PROHIBIT_SYMLINKS, 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 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; |
| } |
| |
| 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(); |
| |
| 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 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|CHASE_PROHIBIT_SYMLINKS, &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 = -EBADF; |
| _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; |
| } |
| |
| 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; |
| } |
| |
| 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; |
| } |
| } |
