From baafb202f87dd4d39039bb9535c0724090169b2e Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Mon, 19 Dec 2022 11:42:15 +0100 Subject: bootctl: split out "install" verb too --- src/boot/bootctl.c | 1191 +--------------------------------------------------- 1 file changed, 3 insertions(+), 1188 deletions(-) (limited to 'src/boot/bootctl.c') diff --git a/src/boot/bootctl.c b/src/boot/bootctl.c index c8b1ce50de..b443f9970b 100644 --- a/src/boot/bootctl.c +++ b/src/boot/bootctl.c @@ -1,65 +1,23 @@ /* SPDX-License-Identifier: LGPL-2.1-or-later */ -#include -#include #include -#include -#include -#include -#include -#include -#include -#include "sd-id128.h" - -#include "alloc-util.h" -#include "blkid-util.h" #include "bootctl.h" +#include "bootctl-install.h" #include "bootctl-random-seed.h" #include "bootctl-reboot-to-firmware.h" #include "bootctl-set-efivar.h" #include "bootctl-status.h" #include "bootctl-systemd-efi-options.h" -#include "bootctl-util.h" -#include "bootspec.h" #include "build.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 "verbs.h" #include "virt.h" @@ -81,23 +39,13 @@ bool arg_quiet = false; int arg_make_entry_directory = false; /* tri-state: < 0 for automatic logic */ sd_id128_t arg_machine_id = SD_ID128_NULL; 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; +EntryTokenType arg_entry_token_type = ARG_ENTRY_TOKEN_AUTO; char *arg_entry_token = NULL; JsonFormatFlags arg_json_format_flags = JSON_FORMAT_OFF; bool arg_arch_all = false; char *arg_root = NULL; 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; +InstallSource arg_install_source = ARG_INSTALL_SOURCE_AUTO; char *arg_efi_boot_option_description = NULL; STATIC_DESTRUCTOR_REGISTER(arg_esp_path, freep); @@ -108,10 +56,6 @@ STATIC_DESTRUCTOR_REGISTER(arg_root, freep); STATIC_DESTRUCTOR_REGISTER(arg_image, freep); STATIC_DESTRUCTOR_REGISTER(arg_efi_boot_option_description, freep); -static const char *pick_efi_boot_option_description(void) { - return arg_efi_boot_option_description ?: "Linux Boot Manager"; -} - int acquire_esp( bool unprivileged_mode, bool graceful, @@ -177,908 +121,6 @@ int acquire_xbootldr( 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 == 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 = -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(); - - 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 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) { - - 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) - return log_error_errno(r, - r == -ENOENT ? - "Failed to access EFI variables. Is the \"efivarfs\" filesystem mounted?" : - "Failed to determine current boot order: %m"); - - if (first || r == 0) { - r = efi_add_boot_option(slot, pick_efi_boot_option_description(), - part, pstart, psize, - uuid, path); - if (r < 0) - return log_error_errno(r, "Failed to create EFI Boot variable entry: %m"); - - log_info("Created EFI boot entry \"%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|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 = -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", arg_entry_token); - - return 0; -} - static int help(int argc, char *argv[], void *userdata) { _cleanup_free_ char *link = NULL; int r; @@ -1356,233 +398,6 @@ static int parse_argv(int argc, char *argv[]) { return 1; } -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_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); -} - -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 bootctl_main(int argc, char *argv[]) { static const Verb verbs[] = { { "help", VERB_ANY, VERB_ANY, 0, help }, -- cgit v1.2.1