more

1 files changed, 0 insertions, 440 deletions

diff --git a/src/libcore/shutdown.c b/src/libcore/shutdown.c
deleted file mode 100644
index e14755d84e..0000000000
--- a/src/libcore/shutdown.c
+++ /dev/null
@@ -1,440 +0,0 @@
-/***
-  This file is part of systemd.
-
-  Copyright 2010 ProFUSION embedded systems
-
-  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 <errno.h>
-#include <getopt.h>
-#include <linux/reboot.h>
-#include <signal.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <sys/mman.h>
-#include <sys/mount.h>
-#include <sys/reboot.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-#include "alloc-util.h"
-#include "cgroup-util.h"
-#include "def.h"
-#include "fileio.h"
-#include "killall.h"
-#include "log.h"
-#include "missing.h"
-#include "parse-util.h"
-#include "process-util.h"
-#include "string-util.h"
-#include "switch-root.h"
-#include "terminal-util.h"
-#include "umount.h"
-#include "util.h"
-#include "virt.h"
-#include "watchdog.h"
-
-#define FINALIZE_ATTEMPTS 50
-
-static char* arg_verb;
-static uint8_t arg_exit_code;
-
-static int parse_argv(int argc, char *argv[]) {
-        enum {
-                ARG_LOG_LEVEL = 0x100,
-                ARG_LOG_TARGET,
-                ARG_LOG_COLOR,
-                ARG_LOG_LOCATION,
-                ARG_EXIT_CODE,
-        };
-
-        static const struct option options[] = {
-                { "log-level",     required_argument, NULL, ARG_LOG_LEVEL    },
-                { "log-target",    required_argument, NULL, ARG_LOG_TARGET   },
-                { "log-color",     optional_argument, NULL, ARG_LOG_COLOR    },
-                { "log-location",  optional_argument, NULL, ARG_LOG_LOCATION },
-                { "exit-code",     required_argument, NULL, ARG_EXIT_CODE    },
-                {}
-        };
-
-        int c, r;
-
-        assert(argc >= 1);
-        assert(argv);
-
-        /* "-" prevents getopt from permuting argv[] and moving the verb away
-         * from argv[1]. Our interface to initrd promises it'll be there. */
-        while ((c = getopt_long(argc, argv, "-", options, NULL)) >= 0)
-                switch (c) {
-
-                case ARG_LOG_LEVEL:
-                        r = log_set_max_level_from_string(optarg);
-                        if (r < 0)
-                                log_error("Failed to parse log level %s, ignoring.", optarg);
-
-                        break;
-
-                case ARG_LOG_TARGET:
-                        r = log_set_target_from_string(optarg);
-                        if (r < 0)
-                                log_error("Failed to parse log target %s, ignoring", optarg);
-
-                        break;
-
-                case ARG_LOG_COLOR:
-
-                        if (optarg) {
-                                r = log_show_color_from_string(optarg);
-                                if (r < 0)
-                                        log_error("Failed to parse log color setting %s, ignoring", optarg);
-                        } else
-                                log_show_color(true);
-
-                        break;
-
-                case ARG_LOG_LOCATION:
-                        if (optarg) {
-                                r = log_show_location_from_string(optarg);
-                                if (r < 0)
-                                        log_error("Failed to parse log location setting %s, ignoring", optarg);
-                        } else
-                                log_show_location(true);
-
-                        break;
-
-                case ARG_EXIT_CODE:
-                        r = safe_atou8(optarg, &arg_exit_code);
-                        if (r < 0)
-                                log_error("Failed to parse exit code %s, ignoring", optarg);
-
-                        break;
-
-                case '\001':
-                        if (!arg_verb)
-                                arg_verb = optarg;
-                        else
-                                log_error("Excess arguments, ignoring");
-                        break;
-
-                case '?':
-                        return -EINVAL;
-
-                default:
-                        assert_not_reached("Unhandled option code.");
-                }
-
-        if (!arg_verb) {
-                log_error("Verb argument missing.");
-                return -EINVAL;
-        }
-
-        return 0;
-}
-
-static int switch_root_initramfs(void) {
-        if (mount("/run/initramfs", "/run/initramfs", NULL, MS_BIND, NULL) < 0)
-                return log_error_errno(errno, "Failed to mount bind /run/initramfs on /run/initramfs: %m");
-
-        if (mount(NULL, "/run/initramfs", NULL, MS_PRIVATE, NULL) < 0)
-                return log_error_errno(errno, "Failed to make /run/initramfs private mount: %m");
-
-        /* switch_root with MS_BIND, because there might still be processes lurking around, which have open file descriptors.
-         * /run/initramfs/shutdown will take care of these.
-         * Also do not detach the old root, because /run/initramfs/shutdown needs to access it.
-         */
-        return switch_root("/run/initramfs", "/oldroot", false, MS_BIND);
-}
-
-
-int main(int argc, char *argv[]) {
-        bool need_umount, need_swapoff, need_loop_detach, need_dm_detach;
-        bool in_container, use_watchdog = false;
-        _cleanup_free_ char *cgroup = NULL;
-        char *arguments[3];
-        unsigned retries;
-        int cmd, r;
-        static const char* const dirs[] = {SYSTEM_SHUTDOWN_PATH, NULL};
-
-        log_parse_environment();
-        r = parse_argv(argc, argv);
-        if (r < 0)
-                goto error;
-
-        /* journald will die if not gone yet. The log target defaults
-         * to console, but may have been changed by command line options. */
-
-        log_close_console(); /* force reopen of /dev/console */
-        log_open();
-
-        umask(0022);
-
-        if (getpid() != 1) {
-                log_error("Not executed by init (PID 1).");
-                r = -EPERM;
-                goto error;
-        }
-
-        if (streq(arg_verb, "reboot"))
-                cmd = RB_AUTOBOOT;
-        else if (streq(arg_verb, "poweroff"))
-                cmd = RB_POWER_OFF;
-        else if (streq(arg_verb, "halt"))
-                cmd = RB_HALT_SYSTEM;
-        else if (streq(arg_verb, "kexec"))
-                cmd = LINUX_REBOOT_CMD_KEXEC;
-        else if (streq(arg_verb, "exit"))
-                cmd = 0; /* ignored, just checking that arg_verb is valid */
-        else {
-                r = -EINVAL;
-                log_error("Unknown action '%s'.", arg_verb);
-                goto error;
-        }
-
-        (void) cg_get_root_path(&cgroup);
-
-        use_watchdog = !!getenv("WATCHDOG_USEC");
-
-        /* lock us into memory */
-        mlockall(MCL_CURRENT|MCL_FUTURE);
-
-        log_info("Sending SIGTERM to remaining processes...");
-        broadcast_signal(SIGTERM, true, true);
-
-        log_info("Sending SIGKILL to remaining processes...");
-        broadcast_signal(SIGKILL, true, false);
-
-        in_container = detect_container() > 0;
-
-        need_umount = !in_container;
-        need_swapoff = !in_container;
-        need_loop_detach = !in_container;
-        need_dm_detach = !in_container;
-
-        /* Unmount all mountpoints, swaps, and loopback devices */
-        for (retries = 0; retries < FINALIZE_ATTEMPTS; retries++) {
-                bool changed = false;
-
-                if (use_watchdog)
-                        watchdog_ping();
-
-                /* Let's trim the cgroup tree on each iteration so
-                   that we leave an empty cgroup tree around, so that
-                   container managers get a nice notify event when we
-                   are down */
-                if (cgroup)
-                        cg_trim(SYSTEMD_CGROUP_CONTROLLER, cgroup, false);
-
-                if (need_umount) {
-                        log_info("Unmounting file systems.");
-                        r = umount_all(&changed);
-                        if (r == 0) {
-                                need_umount = false;
-                                log_info("All filesystems unmounted.");
-                        } else if (r > 0)
-                                log_info("Not all file systems unmounted, %d left.", r);
-                        else
-                                log_error_errno(r, "Failed to unmount file systems: %m");
-                }
-
-                if (need_swapoff) {
-                        log_info("Deactivating swaps.");
-                        r = swapoff_all(&changed);
-                        if (r == 0) {
-                                need_swapoff = false;
-                                log_info("All swaps deactivated.");
-                        } else if (r > 0)
-                                log_info("Not all swaps deactivated, %d left.", r);
-                        else
-                                log_error_errno(r, "Failed to deactivate swaps: %m");
-                }
-
-                if (need_loop_detach) {
-                        log_info("Detaching loop devices.");
-                        r = loopback_detach_all(&changed);
-                        if (r == 0) {
-                                need_loop_detach = false;
-                                log_info("All loop devices detached.");
-                        } else if (r > 0)
-                                log_info("Not all loop devices detached, %d left.", r);
-                        else
-                                log_error_errno(r, "Failed to detach loop devices: %m");
-                }
-
-                if (need_dm_detach) {
-                        log_info("Detaching DM devices.");
-                        r = dm_detach_all(&changed);
-                        if (r == 0) {
-                                need_dm_detach = false;
-                                log_info("All DM devices detached.");
-                        } else if (r > 0)
-                                log_info("Not all DM devices detached, %d left.", r);
-                        else
-                                log_error_errno(r, "Failed to detach DM devices: %m");
-                }
-
-                if (!need_umount && !need_swapoff && !need_loop_detach && !need_dm_detach) {
-                        if (retries > 0)
-                                log_info("All filesystems, swaps, loop devices, DM devices detached.");
-                        /* Yay, done */
-                        goto initrd_jump;
-                }
-
-                /* If in this iteration we didn't manage to
-                 * unmount/deactivate anything, we simply give up */
-                if (!changed) {
-                        log_info("Cannot finalize remaining%s%s%s%s continuing.",
-                                 need_umount ? " file systems," : "",
-                                 need_swapoff ? " swap devices," : "",
-                                 need_loop_detach ? " loop devices," : "",
-                                 need_dm_detach ? " DM devices," : "");
-                        goto initrd_jump;
-                }
-
-                log_debug("After %u retries, couldn't finalize remaining %s%s%s%s trying again.",
-                          retries + 1,
-                          need_umount ? " file systems," : "",
-                          need_swapoff ? " swap devices," : "",
-                          need_loop_detach ? " loop devices," : "",
-                          need_dm_detach ? " DM devices," : "");
-        }
-
-        log_error("Too many iterations, giving up.");
-
- initrd_jump:
-
-        arguments[0] = NULL;
-        arguments[1] = arg_verb;
-        arguments[2] = NULL;
-        execute_directories(dirs, DEFAULT_TIMEOUT_USEC, arguments);
-
-        if (!in_container && !in_initrd() &&
-            access("/run/initramfs/shutdown", X_OK) == 0) {
-                r = switch_root_initramfs();
-                if (r >= 0) {
-                        argv[0] = (char*) "/shutdown";
-
-                        setsid();
-                        make_console_stdio();
-
-                        log_info("Successfully changed into root pivot.\n"
-                                 "Returning to initrd...");
-
-                        execv("/shutdown", argv);
-                        log_error_errno(errno, "Failed to execute shutdown binary: %m");
-                } else
-                        log_error_errno(r, "Failed to switch root to \"/run/initramfs\": %m");
-
-        }
-
-        if (need_umount || need_swapoff || need_loop_detach || need_dm_detach)
-                log_error("Failed to finalize %s%s%s%s ignoring",
-                          need_umount ? " file systems," : "",
-                          need_swapoff ? " swap devices," : "",
-                          need_loop_detach ? " loop devices," : "",
-                          need_dm_detach ? " DM devices," : "");
-
-        /* The kernel will automaticall flush ATA disks and suchlike
-         * on reboot(), but the file systems need to be synce'd
-         * explicitly in advance. So let's do this here, but not
-         * needlessly slow down containers. */
-        if (!in_container)
-                sync();
-
-        if (streq(arg_verb, "exit")) {
-                if (in_container)
-                        exit(arg_exit_code);
-                else {
-                        /* We cannot exit() on the host, fallback on another
-                         * method. */
-                        cmd = RB_POWER_OFF;
-                }
-        }
-
-        switch (cmd) {
-
-        case LINUX_REBOOT_CMD_KEXEC:
-
-                if (!in_container) {
-                        /* We cheat and exec kexec to avoid doing all its work */
-                        pid_t pid;
-
-                        log_info("Rebooting with kexec.");
-
-                        pid = fork();
-                        if (pid < 0)
-                                log_error_errno(errno, "Failed to fork: %m");
-                        else if (pid == 0) {
-
-                                const char * const args[] = {
-                                        KEXEC, "-e", NULL
-                                };
-
-                                /* Child */
-
-                                execv(args[0], (char * const *) args);
-                                _exit(EXIT_FAILURE);
-                        } else
-                                wait_for_terminate_and_warn("kexec", pid, true);
-                }
-
-                cmd = RB_AUTOBOOT;
-                /* Fall through */
-
-        case RB_AUTOBOOT:
-
-                if (!in_container) {
-                        _cleanup_free_ char *param = NULL;
-
-                        r = read_one_line_file("/run/systemd/reboot-param", &param);
-                        if (r < 0)
-                                log_warning_errno(r, "Failed to read reboot parameter file: %m");
-
-                        if (!isempty(param)) {
-                                log_info("Rebooting with argument '%s'.", param);
-                                syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART2, param);
-                                log_warning_errno(errno, "Failed to reboot with parameter, retrying without: %m");
-                        }
-                }
-
-                log_info("Rebooting.");
-                break;
-
-        case RB_POWER_OFF:
-                log_info("Powering off.");
-                break;
-
-        case RB_HALT_SYSTEM:
-                log_info("Halting system.");
-                break;
-
-        default:
-                assert_not_reached("Unknown magic");
-        }
-
-        reboot(cmd);
-        if (errno == EPERM && in_container) {
-                /* If we are in a container, and we lacked
-                 * CAP_SYS_BOOT just exit, this will kill our
-                 * container for good. */
-                log_info("Exiting container.");
-                exit(0);
-        }
-
-        r = log_error_errno(errno, "Failed to invoke reboot(): %m");
-
-  error:
-        log_emergency_errno(r, "Critical error while doing system shutdown: %m");
-        freeze();
-}