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-rw-r--r--src/systemd-shutdown/Makefile42
l---------src/systemd-shutdown/killall.c1
l---------src/systemd-shutdown/killall.h1
l---------src/systemd-shutdown/mount-setup.c1
l---------src/systemd-shutdown/mount-setup.h1
-rw-r--r--src/systemd-shutdown/shutdown.c442
-rw-r--r--src/systemd-shutdown/umount.c616
-rw-r--r--src/systemd-shutdown/umount.h30
8 files changed, 0 insertions, 1134 deletions
diff --git a/src/systemd-shutdown/Makefile b/src/systemd-shutdown/Makefile
deleted file mode 100644
index ba2dac9e47..0000000000
--- a/src/systemd-shutdown/Makefile
+++ /dev/null
@@ -1,42 +0,0 @@
-# -*- Mode: makefile; indent-tabs-mode: t -*-
-#
-# This file is part of systemd.
-#
-# Copyright 2010-2012 Lennart Poettering
-# Copyright 2010-2012 Kay Sievers
-# Copyright 2013 Zbigniew Jędrzejewski-Szmek
-# Copyright 2013 David Strauss
-# Copyright 2016 Luke Shumaker
-#
-# 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 $(dir $(lastword $(MAKEFILE_LIST)))/../../config.mk
-include $(topsrcdir)/build-aux/Makefile.head.mk
-
-rootlibexec_PROGRAMS += systemd-shutdown
-systemd_shutdown_SOURCES = \
- src/core/umount.c \
- src/core/umount.h \
- src/core/shutdown.c \
- src/core/mount-setup.c \
- src/core/mount-setup.h \
- src/core/killall.h \
- src/core/killall.c
-
-systemd_shutdown_LDADD = \
- libshared.la
-
-sd.CPPFLAGS += -DSYSTEM_SHUTDOWN_PATH=\"$(systemshutdowndir)\"
-sd.CPPFLAGS += -DKEXEC=\"$(KEXEC)\"
-
-include $(topsrcdir)/build-aux/Makefile.tail.mk
diff --git a/src/systemd-shutdown/killall.c b/src/systemd-shutdown/killall.c
deleted file mode 120000
index 84c06d47ee..0000000000
--- a/src/systemd-shutdown/killall.c
+++ /dev/null
@@ -1 +0,0 @@
-../grp-system/libcore/killall.c \ No newline at end of file
diff --git a/src/systemd-shutdown/killall.h b/src/systemd-shutdown/killall.h
deleted file mode 120000
index 10ac8c905d..0000000000
--- a/src/systemd-shutdown/killall.h
+++ /dev/null
@@ -1 +0,0 @@
-../grp-system/libcore/killall.h \ No newline at end of file
diff --git a/src/systemd-shutdown/mount-setup.c b/src/systemd-shutdown/mount-setup.c
deleted file mode 120000
index 67cb74c218..0000000000
--- a/src/systemd-shutdown/mount-setup.c
+++ /dev/null
@@ -1 +0,0 @@
-../grp-system/libcore/mount-setup.c \ No newline at end of file
diff --git a/src/systemd-shutdown/mount-setup.h b/src/systemd-shutdown/mount-setup.h
deleted file mode 120000
index bae54ba700..0000000000
--- a/src/systemd-shutdown/mount-setup.h
+++ /dev/null
@@ -1 +0,0 @@
-../grp-system/libcore/mount-setup.h \ No newline at end of file
diff --git a/src/systemd-shutdown/shutdown.c b/src/systemd-shutdown/shutdown.c
deleted file mode 100644
index bf74b5ec99..0000000000
--- a/src/systemd-shutdown/shutdown.c
+++ /dev/null
@@ -1,442 +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 <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 <linux/reboot.h>
-
-#include "basic/alloc-util.h"
-#include "basic/cgroup-util.h"
-#include "basic/def.h"
-#include "basic/fileio.h"
-#include "basic/log.h"
-#include "basic/missing.h"
-#include "basic/parse-util.h"
-#include "basic/process-util.h"
-#include "basic/string-util.h"
-#include "basic/terminal-util.h"
-#include "basic/util.h"
-#include "basic/virt.h"
-#include "shared/switch-root.h"
-#include "shared/watchdog.h"
-
-#include "killall.h"
-#include "umount.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();
-}
diff --git a/src/systemd-shutdown/umount.c b/src/systemd-shutdown/umount.c
deleted file mode 100644
index 0079f8ec78..0000000000
--- a/src/systemd-shutdown/umount.c
+++ /dev/null
@@ -1,616 +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 <fcntl.h>
-#include <string.h>
-#include <sys/mount.h>
-#include <sys/swap.h>
-
-#include <linux/dm-ioctl.h>
-#include <linux/loop.h>
-
-#include <libudev.h>
-
-#include "basic/alloc-util.h"
-#include "basic/escape.h"
-#include "basic/fd-util.h"
-#include "basic/list.h"
-#include "basic/path-util.h"
-#include "basic/string-util.h"
-#include "basic/util.h"
-#include "basic/virt.h"
-#include "shared/fstab-util.h"
-#include "shared/udev-util.h"
-
-#include "mount-setup.h"
-#include "umount.h"
-
-typedef struct MountPoint {
- char *path;
- char *options;
- dev_t devnum;
- LIST_FIELDS(struct MountPoint, mount_point);
-} MountPoint;
-
-static void mount_point_free(MountPoint **head, MountPoint *m) {
- assert(head);
- assert(m);
-
- LIST_REMOVE(mount_point, *head, m);
-
- free(m->path);
- free(m);
-}
-
-static void mount_points_list_free(MountPoint **head) {
- assert(head);
-
- while (*head)
- mount_point_free(head, *head);
-}
-
-static int mount_points_list_get(MountPoint **head) {
- _cleanup_fclose_ FILE *proc_self_mountinfo = NULL;
- unsigned int i;
- int r;
-
- assert(head);
-
- proc_self_mountinfo = fopen("/proc/self/mountinfo", "re");
- if (!proc_self_mountinfo)
- return -errno;
-
- for (i = 1;; i++) {
- _cleanup_free_ char *path = NULL, *options = NULL;
- char *p = NULL;
- MountPoint *m;
- int k;
-
- k = fscanf(proc_self_mountinfo,
- "%*s " /* (1) mount id */
- "%*s " /* (2) parent id */
- "%*s " /* (3) major:minor */
- "%*s " /* (4) root */
- "%ms " /* (5) mount point */
- "%*s" /* (6) mount flags */
- "%*[^-]" /* (7) optional fields */
- "- " /* (8) separator */
- "%*s " /* (9) file system type */
- "%*s" /* (10) mount source */
- "%ms" /* (11) mount options */
- "%*[^\n]", /* some rubbish at the end */
- &path, &options);
- if (k != 2) {
- if (k == EOF)
- break;
-
- log_warning("Failed to parse /proc/self/mountinfo:%u.", i);
- continue;
- }
-
- r = cunescape(path, UNESCAPE_RELAX, &p);
- if (r < 0)
- return r;
-
- /* Ignore mount points we can't unmount because they
- * are API or because we are keeping them open (like
- * /dev/console). Also, ignore all mounts below API
- * file systems, since they are likely virtual too,
- * and hence not worth spending time on. Also, in
- * unprivileged containers we might lack the rights to
- * unmount these things, hence don't bother. */
- if (mount_point_is_api(p) ||
- mount_point_ignore(p) ||
- path_startswith(p, "/dev") ||
- path_startswith(p, "/sys") ||
- path_startswith(p, "/proc")) {
- free(p);
- continue;
- }
-
- m = new0(MountPoint, 1);
- if (!m) {
- free(p);
- return -ENOMEM;
- }
-
- m->path = p;
- m->options = options;
- options = NULL;
-
- LIST_PREPEND(mount_point, *head, m);
- }
-
- return 0;
-}
-
-static int swap_list_get(MountPoint **head) {
- _cleanup_fclose_ FILE *proc_swaps = NULL;
- unsigned int i;
- int r;
-
- assert(head);
-
- proc_swaps = fopen("/proc/swaps", "re");
- if (!proc_swaps)
- return (errno == ENOENT) ? 0 : -errno;
-
- (void) fscanf(proc_swaps, "%*s %*s %*s %*s %*s\n");
-
- for (i = 2;; i++) {
- MountPoint *swap;
- char *dev = NULL, *d;
- int k;
-
- k = fscanf(proc_swaps,
- "%ms " /* device/file */
- "%*s " /* type of swap */
- "%*s " /* swap size */
- "%*s " /* used */
- "%*s\n", /* priority */
- &dev);
-
- if (k != 1) {
- if (k == EOF)
- break;
-
- log_warning("Failed to parse /proc/swaps:%u.", i);
- free(dev);
- continue;
- }
-
- if (endswith(dev, " (deleted)")) {
- free(dev);
- continue;
- }
-
- r = cunescape(dev, UNESCAPE_RELAX, &d);
- free(dev);
- if (r < 0)
- return r;
-
- swap = new0(MountPoint, 1);
- if (!swap) {
- free(d);
- return -ENOMEM;
- }
-
- swap->path = d;
- LIST_PREPEND(mount_point, *head, swap);
- }
-
- return 0;
-}
-
-static int loopback_list_get(MountPoint **head) {
- _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
- struct udev_list_entry *item = NULL, *first = NULL;
- _cleanup_udev_unref_ struct udev *udev = NULL;
- int r;
-
- assert(head);
-
- udev = udev_new();
- if (!udev)
- return -ENOMEM;
-
- e = udev_enumerate_new(udev);
- if (!e)
- return -ENOMEM;
-
- r = udev_enumerate_add_match_subsystem(e, "block");
- if (r < 0)
- return r;
-
- r = udev_enumerate_add_match_sysname(e, "loop*");
- if (r < 0)
- return r;
-
- r = udev_enumerate_add_match_sysattr(e, "loop/backing_file", NULL);
- if (r < 0)
- return r;
-
- r = udev_enumerate_scan_devices(e);
- if (r < 0)
- return r;
-
- first = udev_enumerate_get_list_entry(e);
- udev_list_entry_foreach(item, first) {
- MountPoint *lb;
- _cleanup_udev_device_unref_ struct udev_device *d;
- char *loop;
- const char *dn;
-
- d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item));
- if (!d)
- return -ENOMEM;
-
- dn = udev_device_get_devnode(d);
- if (!dn)
- continue;
-
- loop = strdup(dn);
- if (!loop)
- return -ENOMEM;
-
- lb = new0(MountPoint, 1);
- if (!lb) {
- free(loop);
- return -ENOMEM;
- }
-
- lb->path = loop;
- LIST_PREPEND(mount_point, *head, lb);
- }
-
- return 0;
-}
-
-static int dm_list_get(MountPoint **head) {
- _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
- struct udev_list_entry *item = NULL, *first = NULL;
- _cleanup_udev_unref_ struct udev *udev = NULL;
- int r;
-
- assert(head);
-
- udev = udev_new();
- if (!udev)
- return -ENOMEM;
-
- e = udev_enumerate_new(udev);
- if (!e)
- return -ENOMEM;
-
- r = udev_enumerate_add_match_subsystem(e, "block");
- if (r < 0)
- return r;
-
- r = udev_enumerate_add_match_sysname(e, "dm-*");
- if (r < 0)
- return r;
-
- r = udev_enumerate_scan_devices(e);
- if (r < 0)
- return r;
-
- first = udev_enumerate_get_list_entry(e);
- udev_list_entry_foreach(item, first) {
- MountPoint *m;
- _cleanup_udev_device_unref_ struct udev_device *d;
- dev_t devnum;
- char *node;
- const char *dn;
-
- d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item));
- if (!d)
- return -ENOMEM;
-
- devnum = udev_device_get_devnum(d);
- dn = udev_device_get_devnode(d);
- if (major(devnum) == 0 || !dn)
- continue;
-
- node = strdup(dn);
- if (!node)
- return -ENOMEM;
-
- m = new(MountPoint, 1);
- if (!m) {
- free(node);
- return -ENOMEM;
- }
-
- m->path = node;
- m->devnum = devnum;
- LIST_PREPEND(mount_point, *head, m);
- }
-
- return 0;
-}
-
-static int delete_loopback(const char *device) {
- _cleanup_close_ int fd = -1;
- int r;
-
- fd = open(device, O_RDONLY|O_CLOEXEC);
- if (fd < 0)
- return errno == ENOENT ? 0 : -errno;
-
- r = ioctl(fd, LOOP_CLR_FD, 0);
- if (r >= 0)
- return 1;
-
- /* ENXIO: not bound, so no error */
- if (errno == ENXIO)
- return 0;
-
- return -errno;
-}
-
-static int delete_dm(dev_t devnum) {
- _cleanup_close_ int fd = -1;
- int r;
- struct dm_ioctl dm = {
- .version = {DM_VERSION_MAJOR,
- DM_VERSION_MINOR,
- DM_VERSION_PATCHLEVEL},
- .data_size = sizeof(dm),
- .dev = devnum,
- };
-
- assert(major(devnum) != 0);
-
- fd = open("/dev/mapper/control", O_RDWR|O_CLOEXEC);
- if (fd < 0)
- return -errno;
-
- r = ioctl(fd, DM_DEV_REMOVE, &dm);
- return r >= 0 ? 0 : -errno;
-}
-
-static int mount_points_list_umount(MountPoint **head, bool *changed, bool log_error) {
- MountPoint *m, *n;
- int n_failed = 0;
-
- assert(head);
-
- LIST_FOREACH_SAFE(mount_point, m, n, *head) {
-
- /* If we are in a container, don't attempt to
- read-only mount anything as that brings no real
- benefits, but might confuse the host, as we remount
- the superblock here, not the bind mound. */
- if (detect_container() <= 0) {
- _cleanup_free_ char *options = NULL;
- /* MS_REMOUNT requires that the data parameter
- * should be the same from the original mount
- * except for the desired changes. Since we want
- * to remount read-only, we should filter out
- * rw (and ro too, because it confuses the kernel) */
- (void) fstab_filter_options(m->options, "rw\0ro\0", NULL, NULL, &options);
-
- /* We always try to remount directories
- * read-only first, before we go on and umount
- * them.
- *
- * Mount points can be stacked. If a mount
- * point is stacked below / or /usr, we
- * cannot umount or remount it directly,
- * since there is no way to refer to the
- * underlying mount. There's nothing we can do
- * about it for the general case, but we can
- * do something about it if it is aliased
- * somehwere else via a bind mount. If we
- * explicitly remount the super block of that
- * alias read-only we hence should be
- * relatively safe regarding keeping the fs we
- * can otherwise not see dirty. */
- log_info("Remounting '%s' read-only with options '%s'.", m->path, options);
- (void) mount(NULL, m->path, NULL, MS_REMOUNT|MS_RDONLY, options);
- }
-
- /* Skip / and /usr since we cannot unmount that
- * anyway, since we are running from it. They have
- * already been remounted ro. */
- if (path_equal(m->path, "/")
-#ifndef HAVE_SPLIT_USR
- || path_equal(m->path, "/usr")
-#endif
- || path_startswith(m->path, "/run/initramfs")
- )
- continue;
-
- /* Trying to umount. We don't force here since we rely
- * on busy NFS and FUSE file systems to return EBUSY
- * until we closed everything on top of them. */
- log_info("Unmounting %s.", m->path);
- if (umount2(m->path, 0) == 0) {
- if (changed)
- *changed = true;
-
- mount_point_free(head, m);
- } else if (log_error) {
- log_warning_errno(errno, "Could not unmount %s: %m", m->path);
- n_failed++;
- }
- }
-
- return n_failed;
-}
-
-static int swap_points_list_off(MountPoint **head, bool *changed) {
- MountPoint *m, *n;
- int n_failed = 0;
-
- assert(head);
-
- LIST_FOREACH_SAFE(mount_point, m, n, *head) {
- log_info("Deactivating swap %s.", m->path);
- if (swapoff(m->path) == 0) {
- if (changed)
- *changed = true;
-
- mount_point_free(head, m);
- } else {
- log_warning_errno(errno, "Could not deactivate swap %s: %m", m->path);
- n_failed++;
- }
- }
-
- return n_failed;
-}
-
-static int loopback_points_list_detach(MountPoint **head, bool *changed) {
- MountPoint *m, *n;
- int n_failed = 0, k;
- struct stat root_st;
-
- assert(head);
-
- k = lstat("/", &root_st);
-
- LIST_FOREACH_SAFE(mount_point, m, n, *head) {
- int r;
- struct stat loopback_st;
-
- if (k >= 0 &&
- major(root_st.st_dev) != 0 &&
- lstat(m->path, &loopback_st) >= 0 &&
- root_st.st_dev == loopback_st.st_rdev) {
- n_failed++;
- continue;
- }
-
- log_info("Detaching loopback %s.", m->path);
- r = delete_loopback(m->path);
- if (r >= 0) {
- if (r > 0 && changed)
- *changed = true;
-
- mount_point_free(head, m);
- } else {
- log_warning_errno(errno, "Could not detach loopback %s: %m", m->path);
- n_failed++;
- }
- }
-
- return n_failed;
-}
-
-static int dm_points_list_detach(MountPoint **head, bool *changed) {
- MountPoint *m, *n;
- int n_failed = 0, k;
- struct stat root_st;
-
- assert(head);
-
- k = lstat("/", &root_st);
-
- LIST_FOREACH_SAFE(mount_point, m, n, *head) {
- int r;
-
- if (k >= 0 &&
- major(root_st.st_dev) != 0 &&
- root_st.st_dev == m->devnum) {
- n_failed++;
- continue;
- }
-
- log_info("Detaching DM %u:%u.", major(m->devnum), minor(m->devnum));
- r = delete_dm(m->devnum);
- if (r >= 0) {
- if (changed)
- *changed = true;
-
- mount_point_free(head, m);
- } else {
- log_warning_errno(errno, "Could not detach DM %s: %m", m->path);
- n_failed++;
- }
- }
-
- return n_failed;
-}
-
-int umount_all(bool *changed) {
- int r;
- bool umount_changed;
- LIST_HEAD(MountPoint, mp_list_head);
-
- LIST_HEAD_INIT(mp_list_head);
- r = mount_points_list_get(&mp_list_head);
- if (r < 0)
- goto end;
-
- /* retry umount, until nothing can be umounted anymore */
- do {
- umount_changed = false;
-
- mount_points_list_umount(&mp_list_head, &umount_changed, false);
- if (umount_changed)
- *changed = true;
-
- } while (umount_changed);
-
- /* umount one more time with logging enabled */
- r = mount_points_list_umount(&mp_list_head, &umount_changed, true);
- if (r <= 0)
- goto end;
-
- end:
- mount_points_list_free(&mp_list_head);
-
- return r;
-}
-
-int swapoff_all(bool *changed) {
- int r;
- LIST_HEAD(MountPoint, swap_list_head);
-
- LIST_HEAD_INIT(swap_list_head);
-
- r = swap_list_get(&swap_list_head);
- if (r < 0)
- goto end;
-
- r = swap_points_list_off(&swap_list_head, changed);
-
- end:
- mount_points_list_free(&swap_list_head);
-
- return r;
-}
-
-int loopback_detach_all(bool *changed) {
- int r;
- LIST_HEAD(MountPoint, loopback_list_head);
-
- LIST_HEAD_INIT(loopback_list_head);
-
- r = loopback_list_get(&loopback_list_head);
- if (r < 0)
- goto end;
-
- r = loopback_points_list_detach(&loopback_list_head, changed);
-
- end:
- mount_points_list_free(&loopback_list_head);
-
- return r;
-}
-
-int dm_detach_all(bool *changed) {
- int r;
- LIST_HEAD(MountPoint, dm_list_head);
-
- LIST_HEAD_INIT(dm_list_head);
-
- r = dm_list_get(&dm_list_head);
- if (r < 0)
- goto end;
-
- r = dm_points_list_detach(&dm_list_head, changed);
-
- end:
- mount_points_list_free(&dm_list_head);
-
- return r;
-}
diff --git a/src/systemd-shutdown/umount.h b/src/systemd-shutdown/umount.h
deleted file mode 100644
index ce2fd9ec58..0000000000
--- a/src/systemd-shutdown/umount.h
+++ /dev/null
@@ -1,30 +0,0 @@
-#pragma once
-
-/***
- 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 <stdbool.h>
-
-int umount_all(bool *changed);
-
-int swapoff_all(bool *changed);
-
-int loopback_detach_all(bool *changed);
-
-int dm_detach_all(bool *changed);