/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** This file is part of systemd. Copyright 2013 Kay Sievers systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <stdlib.h> #include <stdbool.h> #include <unistd.h> #include <getopt.h> #include <locale.h> #include <string.h> #include <sys/timex.h> #include "boot.h" #include "build.h" #include "util.h" #include "utf8.h" static int help(void) { printf("%s [OPTIONS...] COMMAND ...\n\n" "Query or change firmware and boot mananger settings.\n\n" " -h --help Show this help\n" " --version Show package version\n" "Commands:\n" " status Show current time settings\n", program_invocation_short_name); return 0; } static int parse_argv(int argc, char *argv[]) { enum { ARG_VERSION = 0x100, }; static const struct option options[] = { { "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, ARG_VERSION }, { NULL, 0, NULL, 0 } }; int c; assert(argc >= 0); assert(argv); while ((c = getopt_long(argc, argv, "+hH:P", options, NULL)) >= 0) { switch (c) { case 'h': help(); return 0; case ARG_VERSION: puts(PACKAGE_STRING); puts(SYSTEMD_FEATURES); return 0; case '?': return -EINVAL; default: log_error("Unknown option code %c", c); return -EINVAL; } } return 1; } static int boot_info_new(struct boot_info **info) { struct boot_info *in; int err; in = new0(struct boot_info, 1); if (!in) return -ENOMEM; err = sd_id128_get_machine(&in->machine_id); if (err < 0) goto err; err = sd_id128_get_boot(&in->boot_id); if (err < 0) goto err; in->fw_entry_active = -1; in->loader_entry_active = -1; *info = in; return 0; err: free(in); return err; } static void boot_info_entries_free(struct boot_info_entry *entries, size_t n) { size_t i; for (i = 0; i < n; i++) { free(entries[i].title); free(entries[i].path); } free(entries); } static void boot_info_free(struct boot_info *info) { free(info->fw_type); free(info->fw_info); boot_info_entries_free(info->fw_entries, info->fw_entries_count); free(info->fw_entries_order); free(info->loader); free(info->loader_image_path); free(info->loader_options_added); boot_info_entries_free(info->loader_entries, info->loader_entries_count); free(info); } static int show_status(char **args, unsigned n) { char buf[64]; struct boot_info *info; int err; err = boot_info_new(&info); if (err < 0) return -ENOMEM; err = boot_info_query(info); printf(" Machine ID: %s\n", sd_id128_to_string(info->machine_id, buf)); printf(" Boot ID: %s\n", sd_id128_to_string(info->boot_id, buf)); if (info->fw_type) printf(" Firmware: %s (%s)\n", info->fw_type, strna(info->fw_info)); if (info->fw_entry_active >= 0) { printf("Firmware entry: %s\n", strna(info->fw_entries[info->fw_entry_active].title)); if (info->fw_entries[info->fw_entry_active].path) printf(" %s\n", info->fw_entries[info->fw_entry_active].path); if (!sd_id128_equal(info->fw_entries[info->fw_entry_active].part_uuid, SD_ID128_NULL)) printf(" /dev/disk/by-partuuid/%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n", SD_ID128_FORMAT_VAL(info->fw_entries[info->fw_entry_active].part_uuid)); } if (info->loader) { printf(" Loader: %s\n", info->loader); printf(" %s\n", strna(info->loader_image_path)); if (!sd_id128_equal(info->loader_part_uuid, SD_ID128_NULL)) printf(" /dev/disk/by-partuuid/%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n", SD_ID128_FORMAT_VAL(info->loader_part_uuid)); if (info->loader_entry_active >= 0) { printf(" Loader entry: %s\n", strna(info->loader_entries[info->loader_entry_active].title)); printf(" %s\n", info->loader_entries[info->loader_entry_active].path); } printf("Loader options: %s\n", strna(info->loader_options_added)); } else printf("No suitable data is provided by the boot manager. See:\n" " http://www.freedesktop.org/wiki/Software/systemd/BootLoaderInterface\n" " http://www.freedesktop.org/wiki/Specifications/BootLoaderSpec\n" "for details.\n"); printf("\n"); boot_info_free(info); return err; } static int bootctl_main(int argc, char *argv[]) { static const struct { const char* verb; const enum { MORE, LESS, EQUAL } argc_cmp; const int argc; int (* const dispatch)(char **args, unsigned n); } verbs[] = { { "status", LESS, 1, show_status }, }; int left; unsigned i; assert(argc >= 0); assert(argv); left = argc - optind; if (left <= 0) /* Special rule: no arguments means "status" */ i = 0; else { if (streq(argv[optind], "help")) { help(); return 0; } for (i = 0; i < ELEMENTSOF(verbs); i++) if (streq(argv[optind], verbs[i].verb)) break; if (i >= ELEMENTSOF(verbs)) { log_error("Unknown operation %s", argv[optind]); return -EINVAL; } } switch (verbs[i].argc_cmp) { case EQUAL: if (left != verbs[i].argc) { log_error("Invalid number of arguments."); return -EINVAL; } break; case MORE: if (left < verbs[i].argc) { log_error("Too few arguments."); return -EINVAL; } break; case LESS: if (left > verbs[i].argc) { log_error("Too many arguments."); return -EINVAL; } break; default: assert_not_reached("Unknown comparison operator."); } return verbs[i].dispatch(argv + optind, left); } int main(int argc, char *argv[]) { int r, retval = EXIT_FAILURE; log_parse_environment(); log_open(); r = parse_argv(argc, argv); if (r < 0) goto finish; else if (r == 0) { retval = EXIT_SUCCESS; goto finish; } r = bootctl_main(argc, argv); retval = r < 0 ? EXIT_FAILURE : r; finish: return retval; }