/* SPDX-License-Identifier: LGPL-2.1-or-later */ #include #include #include #include #include "sd-id128.h" #include "alloc-util.h" #include "ask-password-api.h" #include "build.h" #include "bus-error.h" #include "bus-locator.h" #include "bus-unit-util.h" #include "bus-util.h" #include "bus-wait-for-jobs.h" #include "chase.h" #include "copy.h" #include "creds-util.h" #include "dissect-image.h" #include "env-file.h" #include "errno-util.h" #include "fd-util.h" #include "fileio.h" #include "fs-util.h" #include "glyph-util.h" #include "hostname-util.h" #include "kbd-util.h" #include "libcrypt-util.h" #include "locale-util.h" #include "lock-util.h" #include "main-func.h" #include "memory-util.h" #include "mkdir.h" #include "mount-util.h" #include "os-util.h" #include "parse-argument.h" #include "parse-util.h" #include "password-quality-util.h" #include "path-util.h" #include "pretty-print.h" #include "proc-cmdline.h" #include "random-util.h" #include "smack-util.h" #include "string-util.h" #include "strv.h" #include "terminal-util.h" #include "time-util.h" #include "tmpfile-util-label.h" #include "tmpfile-util.h" #include "umask-util.h" #include "user-util.h" static char *arg_root = NULL; static char *arg_image = NULL; static char *arg_locale = NULL; /* $LANG */ static char *arg_locale_messages = NULL; /* $LC_MESSAGES */ static char *arg_keymap = NULL; static char *arg_timezone = NULL; static char *arg_hostname = NULL; static sd_id128_t arg_machine_id = {}; static char *arg_root_password = NULL; static char *arg_root_shell = NULL; static char *arg_kernel_cmdline = NULL; static bool arg_prompt_locale = false; static bool arg_prompt_keymap = false; static bool arg_prompt_timezone = false; static bool arg_prompt_hostname = false; static bool arg_prompt_root_password = false; static bool arg_prompt_root_shell = false; static bool arg_copy_locale = false; static bool arg_copy_keymap = false; static bool arg_copy_timezone = false; static bool arg_copy_root_password = false; static bool arg_copy_root_shell = false; static bool arg_force = false; static bool arg_delete_root_password = false; static bool arg_root_password_is_hashed = false; static bool arg_welcome = true; static bool arg_reset = false; static ImagePolicy *arg_image_policy = NULL; STATIC_DESTRUCTOR_REGISTER(arg_root, freep); STATIC_DESTRUCTOR_REGISTER(arg_image, freep); STATIC_DESTRUCTOR_REGISTER(arg_locale, freep); STATIC_DESTRUCTOR_REGISTER(arg_locale_messages, freep); STATIC_DESTRUCTOR_REGISTER(arg_keymap, freep); STATIC_DESTRUCTOR_REGISTER(arg_timezone, freep); STATIC_DESTRUCTOR_REGISTER(arg_hostname, freep); STATIC_DESTRUCTOR_REGISTER(arg_root_password, erase_and_freep); STATIC_DESTRUCTOR_REGISTER(arg_image_policy, image_policy_freep); static bool press_any_key(void) { char k = 0; bool need_nl = true; printf("-- Press any key to proceed --"); fflush(stdout); (void) read_one_char(stdin, &k, USEC_INFINITY, &need_nl); if (need_nl) putchar('\n'); return k != 'q'; } static void print_welcome(int rfd) { _cleanup_free_ char *pretty_name = NULL, *os_name = NULL, *ansi_color = NULL; static bool done = false; const char *pn, *ac; int r; assert(rfd >= 0); if (!arg_welcome) return; if (done) return; r = parse_os_release_at(rfd, "PRETTY_NAME", &pretty_name, "NAME", &os_name, "ANSI_COLOR", &ansi_color); if (r < 0) log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r, "Failed to read os-release file, ignoring: %m"); pn = os_release_pretty_name(pretty_name, os_name); ac = isempty(ansi_color) ? "0" : ansi_color; (void) reset_terminal_fd(STDIN_FILENO, /* switch_to_text= */ false); if (colors_enabled()) printf("\nWelcome to your new installation of \x1B[%sm%s\x1B[0m!\n", ac, pn); else printf("\nWelcome to your new installation of %s!\n", pn); printf("\nPlease configure your system!\n\n"); press_any_key(); done = true; } static int show_menu(char **x, unsigned n_columns, unsigned width, unsigned percentage) { unsigned break_lines, break_modulo; size_t n, per_column, i, j; assert(n_columns > 0); n = strv_length(x); per_column = DIV_ROUND_UP(n, n_columns); break_lines = lines(); if (break_lines > 2) break_lines--; /* The first page gets two extra lines, since we want to show * a title */ break_modulo = break_lines; if (break_modulo > 3) break_modulo -= 3; for (i = 0; i < per_column; i++) { for (j = 0; j < n_columns; j ++) { _cleanup_free_ char *e = NULL; if (j * per_column + i >= n) break; e = ellipsize(x[j * per_column + i], width, percentage); if (!e) return log_oom(); printf("%4zu) %-*s", j * per_column + i + 1, (int) width, e); } putchar('\n'); /* on the first screen we reserve 2 extra lines for the title */ if (i % break_lines == break_modulo) { if (!press_any_key()) return 0; } } return 0; } static int prompt_loop(const char *text, char **l, unsigned percentage, bool (*is_valid)(const char *name), char **ret) { int r; assert(text); assert(is_valid); assert(ret); for (;;) { _cleanup_free_ char *p = NULL; unsigned u; r = ask_string(&p, "%s %s (empty to skip, \"list\" to list options): ", special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET), text); if (r < 0) return log_error_errno(r, "Failed to query user: %m"); if (isempty(p)) { log_warning("No data entered, skipping."); return 0; } if (streq(p, "list")) { r = show_menu(l, 3, 22, percentage); if (r < 0) return r; putchar('\n'); continue; }; r = safe_atou(p, &u); if (r >= 0) { if (u <= 0 || u > strv_length(l)) { log_error("Specified entry number out of range."); continue; } log_info("Selected '%s'.", l[u-1]); return free_and_strdup_warn(ret, l[u-1]); } if (!is_valid(p)) { log_error("Entered data invalid."); continue; } return free_and_replace(*ret, p); } } static int should_configure(int dir_fd, const char *filename) { _cleanup_fclose_ FILE *passwd = NULL, *shadow = NULL; int r; assert(dir_fd >= 0); assert(filename); if (streq(filename, "passwd") && !arg_force) /* We may need to do additional checks, so open the file. */ r = xfopenat(dir_fd, filename, "re", O_NOFOLLOW, &passwd); else r = RET_NERRNO(faccessat(dir_fd, filename, F_OK, AT_SYMLINK_NOFOLLOW)); if (r == -ENOENT) return true; /* missing */ if (r < 0) return log_error_errno(r, "Failed to access %s: %m", filename); if (arg_force) return true; /* exists, but if --force was given we should still configure the file. */ if (!passwd) return false; /* In case of /etc/passwd, do an additional check for the root password field. * We first check that passwd redirects to shadow, and then we check shadow. */ struct passwd *i; while ((r = fgetpwent_sane(passwd, &i)) > 0) { if (!streq(i->pw_name, "root")) continue; if (streq_ptr(i->pw_passwd, PASSWORD_SEE_SHADOW)) break; log_debug("passwd: root account with non-shadow password found, treating root as configured"); return false; } if (r < 0) return log_error_errno(r, "Failed to read %s: %m", filename); if (r == 0) { log_debug("No root account found in %s, assuming root is not configured.", filename); return true; } r = xfopenat(dir_fd, "shadow", "re", O_NOFOLLOW, &shadow); if (r == -ENOENT) { log_debug("No shadow file found, assuming root is not configured."); return true; /* missing */ } if (r < 0) return log_error_errno(r, "Failed to access shadow: %m"); struct spwd *j; while ((r = fgetspent_sane(shadow, &j)) > 0) { if (!streq(j->sp_namp, "root")) continue; bool unprovisioned = streq_ptr(j->sp_pwdp, PASSWORD_UNPROVISIONED); log_debug("Root account found, %s.", unprovisioned ? "with unprovisioned password, treating root as not configured" : "treating root as configured"); return unprovisioned; } if (r < 0) return log_error_errno(r, "Failed to read shadow: %m"); assert(r == 0); log_debug("No root account found in shadow, assuming root is not configured."); return true; } static bool locale_is_installed_bool(const char *name) { return locale_is_installed(name) > 0; } static bool locale_is_ok(int rfd, const char *name) { assert(rfd >= 0); return dir_fd_is_root(rfd) ? locale_is_installed_bool(name) : locale_is_valid(name); } static int prompt_locale(int rfd) { _cleanup_strv_free_ char **locales = NULL; bool acquired_from_creds = false; int r; assert(rfd >= 0); if (arg_locale || arg_locale_messages) return 0; r = read_credential("firstboot.locale", (void**) &arg_locale, NULL); if (r < 0) log_debug_errno(r, "Failed to read credential firstboot.locale, ignoring: %m"); else acquired_from_creds = true; r = read_credential("firstboot.locale-messages", (void**) &arg_locale_messages, NULL); if (r < 0) log_debug_errno(r, "Failed to read credential firstboot.locale-messages, ignoring: %m"); else acquired_from_creds = true; if (acquired_from_creds) { log_debug("Acquired locale from credentials."); return 0; } if (!arg_prompt_locale) { log_debug("Prompting for locale was not requested."); return 0; } r = get_locales(&locales); if (r < 0) return log_error_errno(r, "Cannot query locales list: %m"); if (strv_isempty(locales)) log_debug("No locales found, skipping locale selection."); else if (strv_length(locales) == 1) { if (streq(locales[0], SYSTEMD_DEFAULT_LOCALE)) log_debug("Only installed locale is default locale anyway, not setting locale explicitly."); else { log_debug("Only a single locale available (%s), selecting it as default.", locales[0]); arg_locale = strdup(locales[0]); if (!arg_locale) return log_oom(); /* Not setting arg_locale_message here, since it defaults to LANG anyway */ } } else { bool (*is_valid)(const char *name) = dir_fd_is_root(rfd) ? locale_is_installed_bool : locale_is_valid; print_welcome(rfd); r = prompt_loop("Please enter system locale name or number", locales, 60, is_valid, &arg_locale); if (r < 0) return r; if (isempty(arg_locale)) return 0; r = prompt_loop("Please enter system message locale name or number", locales, 60, is_valid, &arg_locale_messages); if (r < 0) return r; /* Suppress the messages setting if it's the same as the main locale anyway */ if (streq_ptr(arg_locale, arg_locale_messages)) arg_locale_messages = mfree(arg_locale_messages); } return 0; } static int process_locale(int rfd) { _cleanup_close_ int pfd = -EBADF; _cleanup_free_ char *f = NULL; char* locales[3]; unsigned i = 0; int r; assert(rfd >= 0); pfd = chase_and_open_parent_at(rfd, "/etc/locale.conf", CHASE_AT_RESOLVE_IN_ROOT|CHASE_MKDIR_0755|CHASE_WARN|CHASE_NOFOLLOW, &f); if (pfd < 0) return log_error_errno(pfd, "Failed to chase /etc/locale.conf: %m"); r = should_configure(pfd, f); if (r == 0) log_debug("Found /etc/locale.conf, assuming locale information has been configured."); if (r <= 0) return r; r = dir_fd_is_root(rfd); if (r < 0) return log_error_errno(r, "Failed to check if directory file descriptor is root: %m"); if (arg_copy_locale && r == 0) { r = copy_file_atomic_at(AT_FDCWD, "/etc/locale.conf", pfd, f, 0644, COPY_REFLINK); if (r != -ENOENT) { if (r < 0) return log_error_errno(r, "Failed to copy host's /etc/locale.conf: %m"); log_info("Copied host's /etc/locale.conf."); return 0; } } r = prompt_locale(rfd); if (r < 0) return r; if (!isempty(arg_locale)) locales[i++] = strjoina("LANG=", arg_locale); if (!isempty(arg_locale_messages) && !streq_ptr(arg_locale_messages, arg_locale)) locales[i++] = strjoina("LC_MESSAGES=", arg_locale_messages); if (i == 0) return 0; locales[i] = NULL; r = write_env_file(pfd, f, NULL, locales); if (r < 0) return log_error_errno(r, "Failed to write /etc/locale.conf: %m"); log_info("/etc/locale.conf written."); return 1; } static bool keymap_exists_bool(const char *name) { return keymap_exists(name) > 0; } static typeof(&keymap_is_valid) determine_keymap_validity_func(int rfd) { int r; r = dir_fd_is_root(rfd); if (r < 0) log_debug_errno(r, "Unable to determine if operating on host root directory, assuming we are: %m"); return r != 0 ? keymap_exists_bool : keymap_is_valid; } static int prompt_keymap(int rfd) { _cleanup_strv_free_ char **kmaps = NULL; int r; assert(rfd >= 0); if (arg_keymap) return 0; r = read_credential("firstboot.keymap", (void**) &arg_keymap, NULL); if (r < 0) log_debug_errno(r, "Failed to read credential firstboot.keymap, ignoring: %m"); else { log_debug("Acquired keymap from credential."); return 0; } if (!arg_prompt_keymap) { log_debug("Prompting for keymap was not requested."); return 0; } r = get_keymaps(&kmaps); if (r == -ENOENT) /* no keymaps installed */ return log_debug_errno(r, "No keymaps are installed."); if (r < 0) return log_error_errno(r, "Failed to read keymaps: %m"); print_welcome(rfd); return prompt_loop("Please enter system keymap name or number", kmaps, 60, determine_keymap_validity_func(rfd), &arg_keymap); } static int process_keymap(int rfd) { _cleanup_close_ int pfd = -EBADF; _cleanup_free_ char *f = NULL; char **keymap; int r; assert(rfd >= 0); pfd = chase_and_open_parent_at(rfd, "/etc/vconsole.conf", CHASE_AT_RESOLVE_IN_ROOT|CHASE_MKDIR_0755|CHASE_WARN|CHASE_NOFOLLOW, &f); if (pfd < 0) return log_error_errno(pfd, "Failed to chase /etc/vconsole.conf: %m"); r = should_configure(pfd, f); if (r == 0) log_debug("Found /etc/vconsole.conf, assuming console has been configured."); if (r <= 0) return r; r = dir_fd_is_root(rfd); if (r < 0) return log_error_errno(r, "Failed to check if directory file descriptor is root: %m"); if (arg_copy_keymap && r == 0) { r = copy_file_atomic_at(AT_FDCWD, "/etc/vconsole.conf", pfd, f, 0644, COPY_REFLINK); if (r != -ENOENT) { if (r < 0) return log_error_errno(r, "Failed to copy host's /etc/vconsole.conf: %m"); log_info("Copied host's /etc/vconsole.conf."); return 0; } } r = prompt_keymap(rfd); if (r == -ENOENT) return 0; /* don't fail if no keymaps are installed */ if (r < 0) return r; if (isempty(arg_keymap)) return 0; keymap = STRV_MAKE(strjoina("KEYMAP=", arg_keymap)); r = write_vconsole_conf(pfd, f, keymap); if (r < 0) return log_error_errno(r, "Failed to write /etc/vconsole.conf: %m"); log_info("/etc/vconsole.conf written."); return 1; } static bool timezone_is_valid_log_error(const char *name) { return timezone_is_valid(name, LOG_ERR); } static int prompt_timezone(int rfd) { _cleanup_strv_free_ char **zones = NULL; int r; assert(rfd >= 0); if (arg_timezone) return 0; r = read_credential("firstboot.timezone", (void**) &arg_timezone, NULL); if (r < 0) log_debug_errno(r, "Failed to read credential firstboot.timezone, ignoring: %m"); else { log_debug("Acquired timezone from credential."); return 0; } if (!arg_prompt_timezone) { log_debug("Prompting for timezone was not requested."); return 0; } r = get_timezones(&zones); if (r < 0) return log_error_errno(r, "Cannot query timezone list: %m"); print_welcome(rfd); r = prompt_loop("Please enter timezone name or number", zones, 30, timezone_is_valid_log_error, &arg_timezone); if (r < 0) return r; return 0; } static int process_timezone(int rfd) { _cleanup_close_ int pfd = -EBADF; _cleanup_free_ char *f = NULL; const char *e; int r; assert(rfd >= 0); pfd = chase_and_open_parent_at(rfd, "/etc/localtime", CHASE_AT_RESOLVE_IN_ROOT|CHASE_MKDIR_0755|CHASE_WARN|CHASE_NOFOLLOW, &f); if (pfd < 0) return log_error_errno(pfd, "Failed to chase /etc/localtime: %m"); r = should_configure(pfd, f); if (r == 0) log_debug("Found /etc/localtime, assuming timezone has been configured."); if (r <= 0) return r; r = dir_fd_is_root(rfd); if (r < 0) return log_error_errno(r, "Failed to check if directory file descriptor is root: %m"); if (arg_copy_timezone && r == 0) { _cleanup_free_ char *s = NULL; r = readlink_malloc("/etc/localtime", &s); if (r != -ENOENT) { if (r < 0) return log_error_errno(r, "Failed to read host's /etc/localtime: %m"); r = symlinkat_atomic_full(s, pfd, f, /* make_relative= */ false); if (r < 0) return log_error_errno(r, "Failed to create /etc/localtime symlink: %m"); log_info("Copied host's /etc/localtime."); return 0; } } r = prompt_timezone(rfd); if (r < 0) return r; if (isempty(arg_timezone)) return 0; e = strjoina("../usr/share/zoneinfo/", arg_timezone); r = symlinkat_atomic_full(e, pfd, f, /* make_relative= */ false); if (r < 0) return log_error_errno(r, "Failed to create /etc/localtime symlink: %m"); log_info("/etc/localtime written"); return 0; } static int prompt_hostname(int rfd) { int r; assert(rfd >= 0); if (arg_hostname) return 0; if (!arg_prompt_hostname) { log_debug("Prompting for hostname was not requested."); return 0; } print_welcome(rfd); putchar('\n'); for (;;) { _cleanup_free_ char *h = NULL; r = ask_string(&h, "%s Please enter hostname for new system (empty to skip): ", special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET)); if (r < 0) return log_error_errno(r, "Failed to query hostname: %m"); if (isempty(h)) { log_warning("No hostname entered, skipping."); break; } if (!hostname_is_valid(h, VALID_HOSTNAME_TRAILING_DOT)) { log_error("Specified hostname invalid."); continue; } /* Get rid of the trailing dot that we allow, but don't want to see */ arg_hostname = hostname_cleanup(h); h = NULL; break; } return 0; } static int process_hostname(int rfd) { _cleanup_close_ int pfd = -EBADF; _cleanup_free_ char *f = NULL; int r; assert(rfd >= 0); pfd = chase_and_open_parent_at(rfd, "/etc/hostname", CHASE_AT_RESOLVE_IN_ROOT|CHASE_MKDIR_0755|CHASE_WARN, &f); if (pfd < 0) return log_error_errno(pfd, "Failed to chase /etc/hostname: %m"); r = should_configure(pfd, f); if (r == 0) log_debug("Found /etc/hostname, assuming hostname has been configured."); if (r <= 0) return r; r = prompt_hostname(rfd); if (r < 0) return r; if (isempty(arg_hostname)) return 0; r = write_string_file_at(pfd, f, arg_hostname, WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_SYNC|WRITE_STRING_FILE_ATOMIC); if (r < 0) return log_error_errno(r, "Failed to write /etc/hostname: %m"); log_info("/etc/hostname written."); return 0; } static int process_machine_id(int rfd) { _cleanup_close_ int pfd = -EBADF; _cleanup_free_ char *f = NULL; int r; assert(rfd >= 0); pfd = chase_and_open_parent_at(rfd, "/etc/machine-id", CHASE_AT_RESOLVE_IN_ROOT|CHASE_MKDIR_0755|CHASE_WARN|CHASE_NOFOLLOW, &f); if (pfd < 0) return log_error_errno(pfd, "Failed to chase /etc/machine-id: %m"); r = should_configure(pfd, f); if (r == 0) log_debug("Found /etc/machine-id, assuming machine-id has been configured."); if (r <= 0) return r; if (sd_id128_is_null(arg_machine_id)) { log_debug("Initialization of machine-id was not requested, skipping."); return 0; } r = write_string_file_at(pfd, "machine-id", SD_ID128_TO_STRING(arg_machine_id), WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_SYNC|WRITE_STRING_FILE_ATOMIC); if (r < 0) return log_error_errno(r, "Failed to write /etc/machine-id: %m"); log_info("/etc/machine-id written."); return 0; } static int prompt_root_password(int rfd) { const char *msg1, *msg2; int r; assert(rfd >= 0); if (arg_root_password) return 0; if (get_credential_user_password("root", &arg_root_password, &arg_root_password_is_hashed) >= 0) return 0; if (!arg_prompt_root_password) { log_debug("Prompting for root password was not requested."); return 0; } print_welcome(rfd); putchar('\n'); msg1 = strjoina(special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET), " Please enter a new root password (empty to skip):"); msg2 = strjoina(special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET), " Please enter new root password again:"); suggest_passwords(); for (;;) { _cleanup_strv_free_erase_ char **a = NULL, **b = NULL; _cleanup_free_ char *error = NULL; r = ask_password_tty(-1, msg1, NULL, 0, 0, NULL, &a); if (r < 0) return log_error_errno(r, "Failed to query root password: %m"); if (strv_length(a) != 1) return log_error_errno(SYNTHETIC_ERRNO(EIO), "Received multiple passwords, where we expected one."); if (isempty(*a)) { log_warning("No password entered, skipping."); break; } r = check_password_quality(*a, /* old */ NULL, "root", &error); if (ERRNO_IS_NEG_NOT_SUPPORTED(r)) log_warning("Password quality check is not supported, proceeding anyway."); else if (r < 0) return log_error_errno(r, "Failed to check password quality: %m"); else if (r == 0) log_warning("Password is weak, accepting anyway: %s", error); r = ask_password_tty(-1, msg2, NULL, 0, 0, NULL, &b); if (r < 0) return log_error_errno(r, "Failed to query root password: %m"); if (strv_length(b) != 1) return log_error_errno(SYNTHETIC_ERRNO(EIO), "Received multiple passwords, where we expected one."); if (!streq(*a, *b)) { log_error("Entered passwords did not match, please try again."); continue; } arg_root_password = TAKE_PTR(*a); break; } return 0; } static int find_shell(int rfd, const char *path) { int r; assert(path); if (!valid_shell(path)) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "%s is not a valid shell", path); r = chaseat(rfd, path, CHASE_AT_RESOLVE_IN_ROOT, NULL, NULL); if (r < 0) return log_error_errno(r, "Failed to resolve shell %s: %m", path); return 0; } static int prompt_root_shell(int rfd) { int r; assert(rfd >= 0); if (arg_root_shell) return 0; r = read_credential("passwd.shell.root", (void**) &arg_root_shell, NULL); if (r < 0) log_debug_errno(r, "Failed to read credential passwd.shell.root, ignoring: %m"); else { log_debug("Acquired root shell from credential."); return 0; } if (!arg_prompt_root_shell) { log_debug("Prompting for root shell was not requested."); return 0; } print_welcome(rfd); putchar('\n'); for (;;) { _cleanup_free_ char *s = NULL; r = ask_string(&s, "%s Please enter root shell for new system (empty to skip): ", special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET)); if (r < 0) return log_error_errno(r, "Failed to query root shell: %m"); if (isempty(s)) { log_warning("No shell entered, skipping."); break; } r = find_shell(rfd, s); if (r < 0) continue; arg_root_shell = TAKE_PTR(s); break; } return 0; } static int write_root_passwd(int rfd, int etc_fd, const char *password, const char *shell) { _cleanup_fclose_ FILE *original = NULL, *passwd = NULL; _cleanup_(unlink_and_freep) char *passwd_tmp = NULL; int r; bool found = false; r = fopen_temporary_at_label(etc_fd, "passwd", "passwd", &passwd, &passwd_tmp); if (r < 0) return r; r = xfopenat(etc_fd, "passwd", "re", O_NOFOLLOW, &original); if (r < 0 && r != -ENOENT) return r; if (original) { struct passwd *i; r = copy_rights(fileno(original), fileno(passwd)); if (r < 0) return r; while ((r = fgetpwent_sane(original, &i)) > 0) { if (streq(i->pw_name, "root")) { if (password) i->pw_passwd = (char *) password; if (shell) i->pw_shell = (char *) shell; found = true; } r = putpwent_sane(i, passwd); if (r < 0) return r; } if (r < 0) return r; } else { r = fchmod(fileno(passwd), 0644); if (r < 0) return -errno; } if (!found) { struct passwd root = { .pw_name = (char *) "root", .pw_passwd = (char *) (password ?: PASSWORD_SEE_SHADOW), .pw_uid = 0, .pw_gid = 0, .pw_gecos = (char *) "Super User", .pw_dir = (char *) "/root", .pw_shell = (char *) (shell ?: default_root_shell_at(rfd)), }; if (errno != ENOENT) return -errno; r = putpwent_sane(&root, passwd); if (r < 0) return r; } r = fflush_sync_and_check(passwd); if (r < 0) return r; r = renameat_and_apply_smack_floor_label(etc_fd, passwd_tmp, etc_fd, "passwd"); if (r < 0) return r; return 0; } static int write_root_shadow(int etc_fd, const char *hashed_password) { _cleanup_fclose_ FILE *original = NULL, *shadow = NULL; _cleanup_(unlink_and_freep) char *shadow_tmp = NULL; int r; bool found = false; r = fopen_temporary_at_label(etc_fd, "shadow", "shadow", &shadow, &shadow_tmp); if (r < 0) return r; r = xfopenat(etc_fd, "shadow", "re", O_NOFOLLOW, &original); if (r < 0 && r != -ENOENT) return r; if (original) { struct spwd *i; r = copy_rights(fileno(original), fileno(shadow)); if (r < 0) return r; while ((r = fgetspent_sane(original, &i)) > 0) { if (streq(i->sp_namp, "root")) { if (hashed_password) { i->sp_pwdp = (char *) hashed_password; i->sp_lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY); } found = true; } r = putspent_sane(i, shadow); if (r < 0) return r; } if (r < 0) return r; } else { r = fchmod(fileno(shadow), 0000); if (r < 0) return -errno; } if (!found) { struct spwd root = { .sp_namp = (char*) "root", .sp_pwdp = (char *) (hashed_password ?: PASSWORD_LOCKED_AND_INVALID), .sp_lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY), .sp_min = -1, .sp_max = -1, .sp_warn = -1, .sp_inact = -1, .sp_expire = -1, .sp_flag = ULONG_MAX, /* this appears to be what everybody does ... */ }; if (errno != ENOENT) return -errno; r = putspent_sane(&root, shadow); if (r < 0) return r; } r = fflush_sync_and_check(shadow); if (r < 0) return r; r = renameat_and_apply_smack_floor_label(etc_fd, shadow_tmp, etc_fd, "shadow"); if (r < 0) return r; return 0; } static int process_root_account(int rfd) { _cleanup_close_ int pfd = -EBADF; _cleanup_(release_lock_file) LockFile lock = LOCK_FILE_INIT; _cleanup_(erase_and_freep) char *_hashed_password = NULL; const char *password, *hashed_password; int k = 0, r; assert(rfd >= 0); pfd = chase_and_open_parent_at(rfd, "/etc/passwd", CHASE_AT_RESOLVE_IN_ROOT|CHASE_MKDIR_0755|CHASE_WARN|CHASE_NOFOLLOW, NULL); if (pfd < 0) return log_error_errno(pfd, "Failed to chase /etc/passwd: %m"); /* Ensure that passwd and shadow are in the same directory and are not symlinks. */ FOREACH_STRING(s, "passwd", "shadow") { r = verify_regular_at(pfd, s, /* follow = */ false); if (IN_SET(r, -EISDIR, -ELOOP, -EBADFD)) return log_error_errno(r, "/etc/%s is not a regular file", s); if (r < 0 && r != -ENOENT) return log_error_errno(r, "Failed to check whether /etc/%s is a regular file: %m", s); r = should_configure(pfd, s); if (r < 0) return r; k += r; } if (k == 0) { log_debug("Found /etc/passwd and /etc/shadow, assuming root account has been initialized."); return 0; } r = make_lock_file_at(pfd, ETC_PASSWD_LOCK_FILENAME, LOCK_EX, &lock); if (r < 0) return log_error_errno(r, "Failed to take a lock on /etc/passwd: %m"); k = dir_fd_is_root(rfd); if (k < 0) return log_error_errno(k, "Failed to check if directory file descriptor is root: %m"); if (arg_copy_root_shell && k == 0) { struct passwd *p; errno = 0; p = getpwnam("root"); if (!p) return log_error_errno(errno_or_else(EIO), "Failed to find passwd entry for root: %m"); r = free_and_strdup(&arg_root_shell, p->pw_shell); if (r < 0) return log_oom(); } r = prompt_root_shell(rfd); if (r < 0) return r; if (arg_copy_root_password && k == 0) { struct spwd *p; errno = 0; p = getspnam("root"); if (!p) return log_error_errno(errno_or_else(EIO), "Failed to find shadow entry for root: %m"); r = free_and_strdup(&arg_root_password, p->sp_pwdp); if (r < 0) return log_oom(); arg_root_password_is_hashed = true; } r = prompt_root_password(rfd); if (r < 0) return r; if (arg_root_password && arg_root_password_is_hashed) { password = PASSWORD_SEE_SHADOW; hashed_password = arg_root_password; } else if (arg_root_password) { r = hash_password(arg_root_password, &_hashed_password); if (r < 0) return log_error_errno(r, "Failed to hash password: %m"); password = PASSWORD_SEE_SHADOW; hashed_password = _hashed_password; } else if (arg_delete_root_password) { password = PASSWORD_SEE_SHADOW; hashed_password = PASSWORD_NONE; } else if (!arg_root_password && arg_prompt_root_password) { /* If the user was prompted, but no password was supplied, lock the account. */ password = PASSWORD_SEE_SHADOW; hashed_password = PASSWORD_LOCKED_AND_INVALID; } else /* Leave the password as is. */ password = hashed_password = NULL; /* Don't create/modify passwd and shadow if there's nothing to do. */ if (!(password || hashed_password || arg_root_shell)) { log_debug("Initialization of root account was not requested, skipping."); return 0; } r = write_root_passwd(rfd, pfd, password, arg_root_shell); if (r < 0) return log_error_errno(r, "Failed to write /etc/passwd: %m"); log_info("/etc/passwd written."); r = write_root_shadow(pfd, hashed_password); if (r < 0) return log_error_errno(r, "Failed to write /etc/shadow: %m"); log_info("/etc/shadow written."); return 0; } static int process_kernel_cmdline(int rfd) { _cleanup_close_ int pfd = -EBADF; _cleanup_free_ char *f = NULL; int r; assert(rfd >= 0); pfd = chase_and_open_parent_at(rfd, "/etc/kernel/cmdline", CHASE_AT_RESOLVE_IN_ROOT|CHASE_MKDIR_0755|CHASE_WARN|CHASE_NOFOLLOW, &f); if (pfd < 0) return log_error_errno(pfd, "Failed to chase /etc/kernel/cmdline: %m"); r = should_configure(pfd, f); if (r == 0) log_debug("Found /etc/kernel/cmdline, assuming kernel command line has been configured."); if (r <= 0) return r; if (!arg_kernel_cmdline) { log_debug("Creation of /etc/kernel/cmdline was not requested, skipping."); return 0; } r = write_string_file_at(pfd, "cmdline", arg_kernel_cmdline, WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_SYNC|WRITE_STRING_FILE_ATOMIC); if (r < 0) return log_error_errno(r, "Failed to write /etc/kernel/cmdline: %m"); log_info("/etc/kernel/cmdline written."); return 0; } static int reset_one(int rfd, const char *path) { _cleanup_close_ int pfd = -EBADF; _cleanup_free_ char *f = NULL; assert(rfd >= 0); assert(path); pfd = chase_and_open_parent_at(rfd, path, CHASE_AT_RESOLVE_IN_ROOT|CHASE_WARN|CHASE_NOFOLLOW, &f); if (pfd == -ENOENT) return 0; if (pfd < 0) return log_error_errno(pfd, "Failed to resolve %s: %m", path); if (unlinkat(pfd, f, 0) < 0) return errno == ENOENT ? 0 : log_error_errno(errno, "Failed to remove %s: %m", path); log_info("Removed %s", path); return 0; } static int process_reset(int rfd) { int r; assert(rfd >= 0); if (!arg_reset) return 0; FOREACH_STRING(p, "/etc/locale.conf", "/etc/vconsole.conf", "/etc/hostname", "/etc/machine-id", "/etc/kernel/cmdline", "/etc/localtime") { r = reset_one(rfd, p); if (r < 0) return r; } return 0; } static int help(void) { _cleanup_free_ char *link = NULL; int r; r = terminal_urlify_man("systemd-firstboot", "1", &link); if (r < 0) return log_oom(); printf("%s [OPTIONS...]\n\n" "Configures basic settings of the system.\n\n" " -h --help Show this help\n" " --version Show package version\n" " --root=PATH Operate on an alternate filesystem root\n" " --image=PATH Operate on disk image as filesystem root\n" " --image-policy=POLICY Specify disk image dissection policy\n" " --locale=LOCALE Set primary locale (LANG=)\n" " --locale-messages=LOCALE Set message locale (LC_MESSAGES=)\n" " --keymap=KEYMAP Set keymap\n" " --timezone=TIMEZONE Set timezone\n" " --hostname=NAME Set hostname\n" " --setup-machine-id Set a random machine ID\n" " --machine-id=ID Set specified machine ID\n" " --root-password=PASSWORD Set root password from plaintext password\n" " --root-password-file=FILE Set root password from file\n" " --root-password-hashed=HASH Set root password from hashed password\n" " --root-shell=SHELL Set root shell\n" " --kernel-command-line=CMDLINE\n" " Set kernel command line\n" " --prompt-locale Prompt the user for locale settings\n" " --prompt-keymap Prompt the user for keymap settings\n" " --prompt-timezone Prompt the user for timezone\n" " --prompt-hostname Prompt the user for hostname\n" " --prompt-root-password Prompt the user for root password\n" " --prompt-root-shell Prompt the user for root shell\n" " --prompt Prompt for all of the above\n" " --copy-locale Copy locale from host\n" " --copy-keymap Copy keymap from host\n" " --copy-timezone Copy timezone from host\n" " --copy-root-password Copy root password from host\n" " --copy-root-shell Copy root shell from host\n" " --copy Copy locale, keymap, timezone, root password\n" " --force Overwrite existing files\n" " --delete-root-password Delete root password\n" " --welcome=no Disable the welcome text\n" " --reset Remove existing files\n" "\nSee the %s for details.\n", program_invocation_short_name, link); return 0; } static int parse_argv(int argc, char *argv[]) { enum { ARG_VERSION = 0x100, ARG_ROOT, ARG_IMAGE, ARG_IMAGE_POLICY, ARG_LOCALE, ARG_LOCALE_MESSAGES, ARG_KEYMAP, ARG_TIMEZONE, ARG_HOSTNAME, ARG_SETUP_MACHINE_ID, ARG_MACHINE_ID, ARG_ROOT_PASSWORD, ARG_ROOT_PASSWORD_FILE, ARG_ROOT_PASSWORD_HASHED, ARG_ROOT_SHELL, ARG_KERNEL_COMMAND_LINE, ARG_PROMPT, ARG_PROMPT_LOCALE, ARG_PROMPT_KEYMAP, ARG_PROMPT_TIMEZONE, ARG_PROMPT_HOSTNAME, ARG_PROMPT_ROOT_PASSWORD, ARG_PROMPT_ROOT_SHELL, ARG_COPY, ARG_COPY_LOCALE, ARG_COPY_KEYMAP, ARG_COPY_TIMEZONE, ARG_COPY_ROOT_PASSWORD, ARG_COPY_ROOT_SHELL, ARG_FORCE, ARG_DELETE_ROOT_PASSWORD, ARG_WELCOME, ARG_RESET, }; static const struct option options[] = { { "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, ARG_VERSION }, { "root", required_argument, NULL, ARG_ROOT }, { "image", required_argument, NULL, ARG_IMAGE }, { "image-policy", required_argument, NULL, ARG_IMAGE_POLICY }, { "locale", required_argument, NULL, ARG_LOCALE }, { "locale-messages", required_argument, NULL, ARG_LOCALE_MESSAGES }, { "keymap", required_argument, NULL, ARG_KEYMAP }, { "timezone", required_argument, NULL, ARG_TIMEZONE }, { "hostname", required_argument, NULL, ARG_HOSTNAME }, { "setup-machine-id", no_argument, NULL, ARG_SETUP_MACHINE_ID }, { "machine-id", required_argument, NULL, ARG_MACHINE_ID }, { "root-password", required_argument, NULL, ARG_ROOT_PASSWORD }, { "root-password-file", required_argument, NULL, ARG_ROOT_PASSWORD_FILE }, { "root-password-hashed", required_argument, NULL, ARG_ROOT_PASSWORD_HASHED }, { "root-shell", required_argument, NULL, ARG_ROOT_SHELL }, { "kernel-command-line", required_argument, NULL, ARG_KERNEL_COMMAND_LINE }, { "prompt", no_argument, NULL, ARG_PROMPT }, { "prompt-locale", no_argument, NULL, ARG_PROMPT_LOCALE }, { "prompt-keymap", no_argument, NULL, ARG_PROMPT_KEYMAP }, { "prompt-timezone", no_argument, NULL, ARG_PROMPT_TIMEZONE }, { "prompt-hostname", no_argument, NULL, ARG_PROMPT_HOSTNAME }, { "prompt-root-password", no_argument, NULL, ARG_PROMPT_ROOT_PASSWORD }, { "prompt-root-shell", no_argument, NULL, ARG_PROMPT_ROOT_SHELL }, { "copy", no_argument, NULL, ARG_COPY }, { "copy-locale", no_argument, NULL, ARG_COPY_LOCALE }, { "copy-keymap", no_argument, NULL, ARG_COPY_KEYMAP }, { "copy-timezone", no_argument, NULL, ARG_COPY_TIMEZONE }, { "copy-root-password", no_argument, NULL, ARG_COPY_ROOT_PASSWORD }, { "copy-root-shell", no_argument, NULL, ARG_COPY_ROOT_SHELL }, { "force", no_argument, NULL, ARG_FORCE }, { "delete-root-password", no_argument, NULL, ARG_DELETE_ROOT_PASSWORD }, { "welcome", required_argument, NULL, ARG_WELCOME }, { "reset", no_argument, NULL, ARG_RESET }, {} }; int r, c; assert(argc >= 0); assert(argv); while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) switch (c) { case 'h': return help(); case ARG_VERSION: return version(); case ARG_ROOT: r = parse_path_argument(optarg, true, &arg_root); if (r < 0) return r; break; case ARG_IMAGE: r = parse_path_argument(optarg, false, &arg_image); if (r < 0) return r; break; case ARG_IMAGE_POLICY: r = parse_image_policy_argument(optarg, &arg_image_policy); if (r < 0) return r; break; case ARG_LOCALE: r = free_and_strdup(&arg_locale, optarg); if (r < 0) return log_oom(); break; case ARG_LOCALE_MESSAGES: r = free_and_strdup(&arg_locale_messages, optarg); if (r < 0) return log_oom(); break; case ARG_KEYMAP: if (!keymap_is_valid(optarg)) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Keymap %s is not valid.", optarg); r = free_and_strdup(&arg_keymap, optarg); if (r < 0) return log_oom(); break; case ARG_TIMEZONE: if (!timezone_is_valid(optarg, LOG_ERR)) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Timezone %s is not valid.", optarg); r = free_and_strdup(&arg_timezone, optarg); if (r < 0) return log_oom(); break; case ARG_ROOT_PASSWORD: r = free_and_strdup(&arg_root_password, optarg); if (r < 0) return log_oom(); arg_root_password_is_hashed = false; break; case ARG_ROOT_PASSWORD_FILE: arg_root_password = mfree(arg_root_password); r = read_one_line_file(optarg, &arg_root_password); if (r < 0) return log_error_errno(r, "Failed to read %s: %m", optarg); arg_root_password_is_hashed = false; break; case ARG_ROOT_PASSWORD_HASHED: r = free_and_strdup(&arg_root_password, optarg); if (r < 0) return log_oom(); arg_root_password_is_hashed = true; break; case ARG_ROOT_SHELL: r = free_and_strdup(&arg_root_shell, optarg); if (r < 0) return log_oom(); break; case ARG_HOSTNAME: if (!hostname_is_valid(optarg, VALID_HOSTNAME_TRAILING_DOT)) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Host name %s is not valid.", optarg); r = free_and_strdup(&arg_hostname, optarg); if (r < 0) return log_oom(); hostname_cleanup(arg_hostname); break; case ARG_SETUP_MACHINE_ID: r = sd_id128_randomize(&arg_machine_id); if (r < 0) return log_error_errno(r, "Failed to generate randomized machine ID: %m"); break; case ARG_MACHINE_ID: r = sd_id128_from_string(optarg, &arg_machine_id); if (r < 0) return log_error_errno(r, "Failed to parse machine id %s.", optarg); break; case ARG_KERNEL_COMMAND_LINE: r = free_and_strdup(&arg_kernel_cmdline, optarg); if (r < 0) return log_oom(); break; case ARG_PROMPT: arg_prompt_locale = arg_prompt_keymap = arg_prompt_timezone = arg_prompt_hostname = arg_prompt_root_password = arg_prompt_root_shell = true; break; case ARG_PROMPT_LOCALE: arg_prompt_locale = true; break; case ARG_PROMPT_KEYMAP: arg_prompt_keymap = true; break; case ARG_PROMPT_TIMEZONE: arg_prompt_timezone = true; break; case ARG_PROMPT_HOSTNAME: arg_prompt_hostname = true; break; case ARG_PROMPT_ROOT_PASSWORD: arg_prompt_root_password = true; break; case ARG_PROMPT_ROOT_SHELL: arg_prompt_root_shell = true; break; case ARG_COPY: arg_copy_locale = arg_copy_keymap = arg_copy_timezone = arg_copy_root_password = arg_copy_root_shell = true; break; case ARG_COPY_LOCALE: arg_copy_locale = true; break; case ARG_COPY_KEYMAP: arg_copy_keymap = true; break; case ARG_COPY_TIMEZONE: arg_copy_timezone = true; break; case ARG_COPY_ROOT_PASSWORD: arg_copy_root_password = true; break; case ARG_COPY_ROOT_SHELL: arg_copy_root_shell = true; break; case ARG_FORCE: arg_force = true; break; case ARG_DELETE_ROOT_PASSWORD: arg_delete_root_password = true; break; case ARG_WELCOME: r = parse_boolean(optarg); if (r < 0) return log_error_errno(r, "Failed to parse --welcome= argument: %s", optarg); arg_welcome = r; break; case ARG_RESET: arg_reset = true; break; case '?': return -EINVAL; default: assert_not_reached(); } if (arg_delete_root_password && (arg_copy_root_password || arg_root_password || arg_prompt_root_password)) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "--delete-root-password cannot be combined with other root password options."); if (arg_image && arg_root) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "--root= and --image= cannot be used together."); if (!sd_id128_is_null(arg_machine_id) && !(arg_image || arg_root) && !arg_force) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "--machine-id=/--setup-machine-id only works with --root= or --image=."); return 1; } static int reload_system_manager(sd_bus **bus) { int r; assert(bus); if (!*bus) { r = bus_connect_transport_systemd(BUS_TRANSPORT_LOCAL, NULL, RUNTIME_SCOPE_SYSTEM, bus); if (r < 0) return bus_log_connect_error(r, BUS_TRANSPORT_LOCAL); } r = bus_service_manager_reload(*bus); if (r < 0) return r; log_info("Requested manager reload to apply locale configuration."); return 0; } static int reload_vconsole(sd_bus **bus) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL; const char *object; int r; assert(bus); if (!*bus) { r = bus_connect_transport_systemd(BUS_TRANSPORT_LOCAL, NULL, RUNTIME_SCOPE_SYSTEM, bus); if (r < 0) return bus_log_connect_error(r, BUS_TRANSPORT_LOCAL); } r = bus_wait_for_jobs_new(*bus, &w); if (r < 0) return log_error_errno(r, "Could not watch jobs: %m"); r = bus_call_method(*bus, bus_systemd_mgr, "RestartUnit", &error, &reply, "ss", "systemd-vconsole-setup.service", "replace"); if (r < 0) return log_error_errno(r, "Failed to issue method call: %s", bus_error_message(&error, r)); r = sd_bus_message_read(reply, "o", &object); if (r < 0) return bus_log_parse_error(r); r = bus_wait_for_jobs_one(w, object, false, NULL); if (r < 0) return log_error_errno(r, "Failed to wait for systemd-vconsole-setup.service/restart: %m"); return 0; } static int run(int argc, char *argv[]) { _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; _cleanup_(umount_and_freep) char *mounted_dir = NULL; _cleanup_close_ int rfd = -EBADF; int r; r = parse_argv(argc, argv); if (r <= 0) return r; log_setup(); umask(0022); bool offline = arg_root || arg_image; if (!offline) { /* If we are called without --root=/--image= let's honour the systemd.firstboot kernel * command line option, because we are called to provision the host with basic settings (as * opposed to some other file system tree/image) */ bool enabled; r = proc_cmdline_get_bool("systemd.firstboot", /* flags = */ 0, &enabled); if (r < 0) return log_error_errno(r, "Failed to parse systemd.firstboot= kernel command line argument, ignoring: %m"); if (r > 0 && !enabled) { log_debug("Found systemd.firstboot=no kernel command line argument, terminating."); return 0; /* disabled */ } } if (arg_image) { assert(!arg_root); r = mount_image_privately_interactively( arg_image, arg_image_policy, DISSECT_IMAGE_GENERIC_ROOT | DISSECT_IMAGE_REQUIRE_ROOT | DISSECT_IMAGE_VALIDATE_OS | DISSECT_IMAGE_RELAX_VAR_CHECK | DISSECT_IMAGE_FSCK | DISSECT_IMAGE_GROWFS, &mounted_dir, &rfd, &loop_device); if (r < 0) return r; arg_root = strdup(mounted_dir); if (!arg_root) return log_oom(); } else { rfd = open(empty_to_root(arg_root), O_DIRECTORY|O_CLOEXEC); if (rfd < 0) return log_error_errno(errno, "Failed to open %s: %m", empty_to_root(arg_root)); } LOG_SET_PREFIX(arg_image ?: arg_root); /* We check these conditions here instead of in parse_argv() so that we can take the root directory * into account. */ if (arg_keymap && !determine_keymap_validity_func(rfd)(arg_keymap)) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Keymap %s is not installed.", arg_keymap); if (arg_locale && !locale_is_ok(rfd, arg_locale)) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Locale %s is not installed.", arg_locale); if (arg_locale_messages && !locale_is_ok(rfd, arg_locale_messages)) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Locale %s is not installed.", arg_locale_messages); if (arg_root_shell) { r = find_shell(rfd, arg_root_shell); if (r < 0) return r; } r = process_reset(rfd); if (r < 0) return r; r = process_locale(rfd); if (r < 0) return r; if (r > 0 && !offline) (void) reload_system_manager(&bus); r = process_keymap(rfd); if (r < 0) return r; if (r > 0 && !offline) (void) reload_vconsole(&bus); r = process_timezone(rfd); if (r < 0) return r; r = process_hostname(rfd); if (r < 0) return r; r = process_machine_id(rfd); if (r < 0) return r; r = process_root_account(rfd); if (r < 0) return r; r = process_kernel_cmdline(rfd); if (r < 0) return r; return 0; } DEFINE_MAIN_FUNCTION(run);