src/core/shutdown.c

	shutdown.c revision 3f85ef0f05ffc51e19f86fb83a1c51e8e3cd6817
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek
12b42c76672a66c2d4ea7212c14f8f1b5a62b78dTom Gundersen/***
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek  This file is part of systemd.
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek  Copyright 2010 ProFUSION embedded systems
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek  systemd is free software; you can redistribute it and/or modify it
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek  under the terms of the GNU Lesser General Public License as published by
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek  the Free Software Foundation; either version 2.1 of the License, or
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek  (at your option) any later version.
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek  systemd is distributed in the hope that it will be useful, but
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek  WITHOUT ANY WARRANTY; without even the implied warranty of
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek  Lesser General Public License for more details.
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek  You should have received a copy of the GNU Lesser General Public License
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek  along with systemd; If not, see <http://www.gnu.org/licenses/>.
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek***/
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek#include <sys/mman.h>
19887cd06a3af2f045e763986eda19e208bd3f85Zbigniew Jędrzejewski-Szmek#include <sys/types.h>
21ac6ff143cc8bebfbd1818af28e8c6f82cd5265Zbigniew Jędrzejewski-Szmek#include <sys/reboot.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include <linux/reboot.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include <sys/wait.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include <sys/stat.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include <sys/mount.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include <sys/syscall.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include <fcntl.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include <dirent.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include <errno.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include <unistd.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include <signal.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include <stdbool.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include <stdlib.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include <string.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include <getopt.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "missing.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "log.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "fileio.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "umount.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "util.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "mkdir.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "virt.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "watchdog.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "killall.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "cgroup-util.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "def.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "switch-root.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#define FINALIZE_ATTEMPTS 50
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmekstatic char* arg_verb;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmekstatic int parse_argv(int argc, char *argv[]) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        enum {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                ARG_LOG_LEVEL = 0x100,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                ARG_LOG_TARGET,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                ARG_LOG_COLOR,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                ARG_LOG_LOCATION,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        };
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        static const struct option options[] = {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                { "log-level",     required_argument, NULL, ARG_LOG_LEVEL    },
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                { "log-target",    required_argument, NULL, ARG_LOG_TARGET   },
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                { "log-color",     optional_argument, NULL, ARG_LOG_COLOR    },
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                { "log-location",  optional_argument, NULL, ARG_LOG_LOCATION },
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                {}
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering        };
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering        int c, r;
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering        assert(argc >= 1);
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering        assert(argv);
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering        while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0)
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                switch (c) {
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                case ARG_LOG_LEVEL:
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                        r = log_set_max_level_from_string(optarg);
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                        if (r < 0)
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                                log_error("Failed to parse log level %s, ignoring.", optarg);
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering
b938cb902c3b5bca807a94b277672c64d6767886Jan Engelhardt                        break;
b938cb902c3b5bca807a94b277672c64d6767886Jan Engelhardt
b938cb902c3b5bca807a94b277672c64d6767886Jan Engelhardt                case ARG_LOG_TARGET:
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                        r = log_set_target_from_string(optarg);
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                        if (r < 0)
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                                log_error("Failed to parse log target %s, ignoring", optarg);
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                        break;
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                case ARG_LOG_COLOR:
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                        if (optarg) {
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                                r = log_show_color_from_string(optarg);
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                                if (r < 0)
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                                        log_error("Failed to parse log color setting %s, ignoring", optarg);
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                        } else
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                                log_show_color(true);
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                        break;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                case ARG_LOG_LOCATION:
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        if (optarg) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                r = log_show_location_from_string(optarg);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                if (r < 0)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                        log_error("Failed to parse log location setting %s, ignoring", optarg);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        } else
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                log_show_location(true);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        break;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                case '?':
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        return -EINVAL;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                default:
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        assert_not_reached("Unhandled option code.");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        if (optind >= argc) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                log_error("Verb argument missing.");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                return -EINVAL;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        arg_verb = argv[optind];
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        if (optind + 1 < argc)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                log_error("Excess arguments, ignoring");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        return 0;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek}
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmekstatic int switch_root_initramfs(void) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        if (mount("/run/initramfs", "/run/initramfs", NULL, MS_BIND, NULL) < 0) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                log_error("Failed to mount bind /run/initramfs on /run/initramfs: %m");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                return -errno;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        if (mount(NULL, "/run/initramfs", NULL, MS_PRIVATE, NULL) < 0) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                log_error("Failed to make /run/initramfs private mount: %m");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                return -errno;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        /* switch_root with MS_BIND, because there might still be processes lurking around, which have open file desriptors.
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek         * /run/initramfs/shutdown will take care of these.
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek         * Also do not detach the old root, because /run/initramfs/shutdown needs to access it.
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek         */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        return switch_root("/run/initramfs", "/oldroot", false, MS_BIND);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek}
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmekint main(int argc, char *argv[]) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        bool need_umount, need_swapoff, need_loop_detach, need_dm_detach;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        bool in_container, use_watchdog = false;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        _cleanup_free_ char *cgroup = NULL;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        char *arguments[3];
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        unsigned retries;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        int cmd, r;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        log_parse_environment();
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        r = parse_argv(argc, argv);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        if (r < 0)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                goto error;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        /* journald will die if not gone yet. The log target defaults
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek         * to console, but may have been changed by command line options. */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        log_close_console(); /* force reopen of /dev/console */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        log_open();
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        umask(0022);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        if (getpid() != 1) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                log_error("Not executed by init (PID 1).");
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering                r = -EPERM;
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering                goto error;
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering        }
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering        if (streq(arg_verb, "reboot"))
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering                cmd = RB_AUTOBOOT;
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering        else if (streq(arg_verb, "poweroff"))
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering                cmd = RB_POWER_OFF;
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering        else if (streq(arg_verb, "halt"))
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering                cmd = RB_HALT_SYSTEM;
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering        else if (streq(arg_verb, "kexec"))
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering                cmd = LINUX_REBOOT_CMD_KEXEC;
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering        else {
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering                r = -EINVAL;
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering                log_error("Unknown action '%s'.", arg_verb);
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering                goto error;
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering        }
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering        cg_get_root_path(&cgroup);
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering        use_watchdog = !!getenv("WATCHDOG_USEC");
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering        /* lock us into memory */
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering        mlockall(MCL_CURRENT|MCL_FUTURE);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        log_info("Sending SIGTERM to remaining processes...");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        broadcast_signal(SIGTERM, true, true);
b938cb902c3b5bca807a94b277672c64d6767886Jan Engelhardt
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        log_info("Sending SIGKILL to remaining processes...");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        broadcast_signal(SIGKILL, true, false);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        in_container = detect_container(NULL) > 0;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        need_umount = !in_container;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        need_swapoff = !in_container;
b938cb902c3b5bca807a94b277672c64d6767886Jan Engelhardt        need_loop_detach = !in_container;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        need_dm_detach = !in_container;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        /* Unmount all mountpoints, swaps, and loopback devices */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        for (retries = 0; retries < FINALIZE_ATTEMPTS; retries++) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                bool changed = false;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                if (use_watchdog)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        watchdog_ping();
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                /* Let's trim the cgroup tree on each iteration so
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                   that we leave an empty cgroup tree around, so that
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                   container managers get a nice notify event when we
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                   are down */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                if (cgroup)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        cg_trim(SYSTEMD_CGROUP_CONTROLLER, cgroup, false);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                if (need_umount) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        log_info("Unmounting file systems.");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        r = umount_all(&changed);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        if (r == 0) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                need_umount = false;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                log_info("All filesystems unmounted.");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        } else if (r > 0)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                log_info("Not all file systems unmounted, %d left.", r);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        else
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                log_error("Failed to unmount file systems: %s", strerror(-r));
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                if (need_swapoff) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        log_info("Deactivating swaps.");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        r = swapoff_all(&changed);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        if (r == 0) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                need_swapoff = false;
b938cb902c3b5bca807a94b277672c64d6767886Jan Engelhardt                                log_info("All swaps deactivated.");
b938cb902c3b5bca807a94b277672c64d6767886Jan Engelhardt                        } else if (r > 0)
a8eaaee72a2f06e0fb64fb71de3b71ecba31dafbJan Engelhardt                                log_info("Not all swaps deactivated, %d left.", r);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        else
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                log_error("Failed to deactivate swaps: %s", strerror(-r));
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                if (need_loop_detach) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        log_info("Detaching loop devices.");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        r = loopback_detach_all(&changed);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        if (r == 0) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                need_loop_detach = false;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                log_info("All loop devices detached.");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        } else if (r > 0)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                log_info("Not all loop devices detached, %d left.", r);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        else
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                log_error("Failed to detach loop devices: %s", strerror(-r));
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                if (need_dm_detach) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        log_info("Detaching DM devices.");
6e9efa59209d48fc69a456fbadb2b5c113f503a6Lennart Poettering                        r = dm_detach_all(&changed);
6e9efa59209d48fc69a456fbadb2b5c113f503a6Lennart Poettering                        if (r == 0) {
6e9efa59209d48fc69a456fbadb2b5c113f503a6Lennart Poettering                                need_dm_detach = false;
6e9efa59209d48fc69a456fbadb2b5c113f503a6Lennart Poettering                                log_info("All DM devices detached.");
b938cb902c3b5bca807a94b277672c64d6767886Jan Engelhardt                        } else if (r > 0)
6e9efa59209d48fc69a456fbadb2b5c113f503a6Lennart Poettering                                log_info("Not all DM devices detached, %d left.", r);
6e9efa59209d48fc69a456fbadb2b5c113f503a6Lennart Poettering                        else
b938cb902c3b5bca807a94b277672c64d6767886Jan Engelhardt                                log_error("Failed to detach DM devices: %s", strerror(-r));
6e9efa59209d48fc69a456fbadb2b5c113f503a6Lennart Poettering                }
6e9efa59209d48fc69a456fbadb2b5c113f503a6Lennart Poettering
6e9efa59209d48fc69a456fbadb2b5c113f503a6Lennart Poettering                if (!need_umount && !need_swapoff && !need_loop_detach && !need_dm_detach) {
6e9efa59209d48fc69a456fbadb2b5c113f503a6Lennart Poettering                        if (retries > 0)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                log_info("All filesystems, swaps, loop devices, DM devices detached.");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        /* Yay, done */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        goto initrd_jump;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                /* If in this iteration we didn't manage to
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                 * unmount/deactivate anything, we simply give up */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                if (!changed) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        log_info("Cannot finalize remaining%s%s%s%s continuing.",
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                 need_umount ? " file systems," : "",
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                 need_swapoff ? " swap devices," : "",
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                 need_loop_detach ? " loop devices," : "",
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                 need_dm_detach ? " DM devices," : "");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        goto initrd_jump;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                log_debug("After %u retries, couldn't finalize remaining %s%s%s%s trying again.",
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                          retries + 1,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                          need_umount ? " file systems," : "",
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                          need_swapoff ? " swap devices," : "",
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                          need_loop_detach ? " loop devices," : "",
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                          need_dm_detach ? " DM devices," : "");
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering        }
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering        log_error("Too many iterations, giving up.");
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek initrd_jump:
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        arguments[0] = NULL;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        arguments[1] = arg_verb;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        arguments[2] = NULL;
28f90ea25f8d8f2bfbe6d3e6a4846943eb92e4c5Zbigniew Jędrzejewski-Szmek        execute_directory(SYSTEM_SHUTDOWN_PATH, NULL, DEFAULT_TIMEOUT_USEC, arguments);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        if (!in_container && !in_initrd() &&
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek            access("/run/initramfs/shutdown", X_OK) == 0) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                r = switch_root_initramfs();
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                if (r >= 0) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        argv[0] = (char*) "/shutdown";
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        setsid();
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        make_console_stdio();
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        log_info("Successfully changed into root pivot.\n"
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                                 "Returning to initrd...");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        execv("/shutdown", argv);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        log_error("Failed to execute shutdown binary: %m");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                } else
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        log_error("Failed to switch root to \"/run/initramfs\": %s", strerror(-r));
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        if (need_umount || need_swapoff || need_loop_detach || need_dm_detach)
28f90ea25f8d8f2bfbe6d3e6a4846943eb92e4c5Zbigniew Jędrzejewski-Szmek                log_error("Failed to finalize %s%s%s%s ignoring",
28f90ea25f8d8f2bfbe6d3e6a4846943eb92e4c5Zbigniew Jędrzejewski-Szmek                          need_umount ? " file systems," : "",
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                          need_swapoff ? " swap devices," : "",
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                          need_loop_detach ? " loop devices," : "",
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                          need_dm_detach ? " DM devices," : "");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        /* The kernel will automaticall flush ATA disks and suchlike
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek         * on reboot(), but the file systems need to be synce'd
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek         * explicitly in advance. So let's do this here, but not
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek         * needlessly slow down containers. */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        if (!in_container)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                sync();
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        switch (cmd) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek        case LINUX_REBOOT_CMD_KEXEC:
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                if (!in_container) {
b938cb902c3b5bca807a94b277672c64d6767886Jan Engelhardt                        /* We cheat and exec kexec to avoid doing all its work */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        pid_t pid;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        log_info("Rebooting with kexec.");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        pid = fork();
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        if (pid < 0)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                log_error("Failed to fork: %m");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        else if (pid == 0) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                const char * const args[] = {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                        KEXEC, "-e", NULL
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                };
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                /* Child */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                execv(args[0], (char * const *) args);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                _exit(EXIT_FAILURE);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                        } else
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                                wait_for_terminate_and_warn("kexec", pid);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                cmd = RB_AUTOBOOT;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                /* Fall through */
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering
b938cb902c3b5bca807a94b277672c64d6767886Jan Engelhardt        case RB_AUTOBOOT:
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                if (!in_container) {
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                        _cleanup_free_ char *param = NULL;
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                        if (read_one_line_file(REBOOT_PARAM_FILE, &param) >= 0) {
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                                log_info("Rebooting with argument '%s'.", param);
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                                syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART2, param);
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                        }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                log_info("Rebooting.");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                break;
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering        case RB_POWER_OFF:
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                log_info("Powering off.");
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                break;
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering        case RB_HALT_SYSTEM:
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                log_info("Halting system.");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek                break;
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering
ef3100e9637adda26fa19e7ee8606788320dcde3Lennart Poettering        default:
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering                assert_not_reached("Unknown magic");
c454426c54c9beb274f415a80c64a4f1580700e7Lennart Poettering        }
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering        reboot(cmd);
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering        if (errno == EPERM && in_container) {
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                /* If we are in a container, and we lacked
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                 * CAP_SYS_BOOT just exit, this will kill our
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                 * container for good. */
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                log_info("Exiting container.");
91913f584af38b29a816cca959ba648acd60ac9fLennart Poettering                exit(0);
b938cb902c3b5bca807a94b277672c64d6767886Jan Engelhardt        }
ef3100e9637adda26fa19e7ee8606788320dcde3Lennart Poettering
ef3100e9637adda26fa19e7ee8606788320dcde3Lennart Poettering        log_error("Failed to invoke reboot(): %m");
ef3100e9637adda26fa19e7ee8606788320dcde3Lennart Poettering        r = -errno;
ef3100e9637adda26fa19e7ee8606788320dcde3Lennart Poettering
ef3100e9637adda26fa19e7ee8606788320dcde3Lennart Poettering  error:
ef3100e9637adda26fa19e7ee8606788320dcde3Lennart Poettering        log_error("Critical error while doing system shutdown: %s", strerror(-r));
ef3100e9637adda26fa19e7ee8606788320dcde3Lennart Poettering
b938cb902c3b5bca807a94b277672c64d6767886Jan Engelhardt        freeze();
a8eaaee72a2f06e0fb64fb71de3b71ecba31dafbJan Engelhardt}
ef3100e9637adda26fa19e7ee8606788320dcde3Lennart Poettering