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#! /bin/sh
### BEGIN INIT INFO
# Provides: checkroot
# Required-Start: mountdevsubfs hostname
# Required-Stop:
# Should-Start: keymap hwclockfirst hdparm bootlogd
# Should-stop:
# Default-Start: S
# Default-Stop:
# X-Interactive: true
# Short-Description: Check to root file system.
### END INIT INFO
# Include /usr/bin in path to find on_ac_power if /usr/ is on the root
# partition.
PATH=/sbin:/bin:/usr/bin
FSCK_LOGFILE=/var/log/fsck/checkroot
[ "$FSCKFIX" ] || FSCKFIX=no
[ "$SULOGIN" ] || SULOGIN=no
. /lib/init/vars.sh
. /lib/lsb/init-functions
. /lib/init/mount-functions.sh
. /lib/init/splash-functions-base
. /lib/init/usplash-fsck-functions.sh
do_start () {
#
# Set SULOGIN in /etc/default/rcS to yes if you want a sulogin to
# be spawned from this script *before anything else* with a timeout,
# like sysv does.
#
[ "$SULOGIN" = yes ] && sulogin -t 30 $CONSOLE
KERNEL="$(uname -s)"
MACHINE="$(uname -m)"
#
# Read /etc/fstab, looking for:
# 1) The root filesystem, resolving LABEL=*|UUID=* entries to the
# device node,
# 2) Swap that is on a md device or a file that may be on a md
# device,
#
exec 9<&0 /dev/null 2>&1
log_action_end_msg $?
else
log_daemon_msg "Activating swap"
swapon -a -v
log_end_msg $?
fi
fi
#
# Does the root device in /etc/fstab match with the actual device ?
# If not we try to use the /dev/root alias device, and if that
# fails we create a temporary node in /lib/init/rw.
#
if [ "$rootcheck" = yes ]
then
ddev="$(mountpoint -qx $rootdev)"
rdev="$(mountpoint -d /)"
if [ "$ddev" != "$rdev" ] && [ "$ddev" != "4:0" ]
then
if [ "$(mountpoint -qx /dev/root)" = "4:0" ]
then
rootdev=/dev/root
else
if \
rm -f /lib/init/rw/rootdev \
&& mknod -m 600 /lib/init/rw/rootdev b ${rdev%:*} ${rdev#*:} \
&& [ -e /lib/init/rw/rootdev ]
then
rootdev=/lib/init/rw/rootdev
else
rootfatal=yes
fi
fi
fi
fi
#
# Bother, said Pooh.
#
if [ "$rootfatal" = yes ]
then
log_failure_msg "The device node $rootdev for the root filesystem is missing or incorrect
or there is no entry for the root filesystem listed in /etc/fstab.
The system is also unable to create a temporary node in /lib/init/rw.
This means you have to fix the problem manually."
log_warning_msg "A maintenance shell will now be started.
CONTROL-D will terminate this shell and restart the system."
# Start a single user shell on the console
if ! sulogin $CONSOLE
then
log_failure_msg "Attempt to start maintenance shell failed.
Will restart in 5 seconds."
sleep 5
fi
[ "$VERBOSE" = no ] || log_action_msg "Will now restart"
reboot -f
fi
# See if we're on AC Power. If not, we're not gonna run our
# check. If on_ac_power (in /usr/) is unavailable, behave as
# before and check all file systems needing it.
# Disabled AC power check until fsck can be told to only check the
# file system if it is corrupt when running on battery. (bug #526398)
# if which on_ac_power >/dev/null 2>&1 && [ "$rootcheck" = yes ]
# then
# on_ac_power >/dev/null 2>&1
# if [ "$?" -eq 1 ]
# then
# log_warning_msg "On battery power, so skipping file system check."
# rootcheck=no
# fi
# fi
#
# See if we want to check the root file system.
#
FSCKCODE=0
if [ -f /fastboot ] || grep -s -w -i "fastboot" /proc/cmdline
then
[ "$rootcheck" = yes ] && log_warning_msg "Fast boot enabled, so skipping root file system check."
rootcheck=no
fi
if [ "$rootcheck" = yes ]
then
#
# Ensure that root is quiescent and read-only before fsck'ing.
#
# mount -n -o remount,ro / would be the correct syntax but
# mount can get confused when there is a "bind" mount defined
# in fstab that bind-mounts "/" somewhere else.
#
# So we use mount -n -o remount,ro $rootdev / but that can
# fail on older kernels on sparc64/alpha architectures due
# to a bug in sys_mount().
#
# As a compromise we try both.
#
if \
! mount -n -o remount,ro $rootdev / \
&& ! mount -n -o remount,ro -t dummytype $rootdev / 2>/dev/null \
&& ! mount -n -o remount,ro / 2>/dev/null
then
log_failure_msg "Cannot check root file system because it is not mounted read-only."
rootcheck=no
fi
fi
#
# The actual checking is done here.
#
if [ "$rootcheck" = yes ]
then
if [ -f /forcefsck ] || grep -s -w -i "forcefsck" /proc/cmdline
then
force="-f"
else
force=""
fi
if [ "$FSCKFIX" = yes ]
then
fix="-y"
else
fix="-a"
fi
spinner="-C"
case "$TERM" in
dumb|network|unknown|"")
spinner="" ;;
esac
# This Linux/s390 special case should go away.
if [ "${KERNEL}:${MACHINE}" = Linux:s390 ]
then
spinner=""
fi
if [ "$VERBOSE" = no ]
then
log_action_begin_msg "Checking root file system"
if [ "$roottype" = "ext2" -o "$roottype" = "ext3" -o "$roottype" = "ext4" ] && usplash_running; then
PROGRESS_FILE=`mktemp -p /lib/init/rw` || PROGRESS_FILE=/lib/init/rw/checkroot_fsck
set -m
logsave -s $FSCK_LOGFILE fsck -C3 $force $fix -t $roottype $rootdev >/dev/console 2>&1 3>$PROGRESS_FILE &
set +m
usplash_progress "$PROGRESS_FILE"
rm -f $PROGRESS_FILE
else
splash_start_indefinite
logsave -s $FSCK_LOGFILE fsck $spinner $force $fix -t $roottype $rootdev
FSCKCODE=$?
splash_stop_indefinite
fi
if [ "$FSCKCODE" = 0 ]
then
log_action_end_msg 0
else
log_action_end_msg 1 "code $FSCKCODE"
fi
else
splash_start_indefinite
log_daemon_msg "Will now check root file system"
logsave -s $FSCK_LOGFILE fsck $spinner $force $fix -V -t $roottype $rootdev
FSCKCODE=$?
log_end_msg $FSCKCODE
splash_stop_indefinite
fi
fi
#
# If there was a failure, drop into single-user mode.
#
# NOTE: "failure" is defined as exiting with a return code of
# 4 or larger. A return code of 1 indicates that file system
# errors were corrected but that the boot may proceed. A return
# code of 2 or 3 indicates that the system should immediately reboot.
#
if [ "$FSCKCODE" -gt 3 ]
then
# Surprise! Re-directing from a HERE document (as in "cat << EOF")
# does not work because the root is currently read-only.
log_failure_msg "An automatic file system check (fsck) of the root filesystem failed.
A manual fsck must be performed, then the system restarted.
The fsck should be performed in maintenance mode with the
root filesystem mounted in read-only mode."
log_warning_msg "The root filesystem is currently mounted in read-only mode.
A maintenance shell will now be started.
After performing system maintenance, press CONTROL-D
to terminate the maintenance shell and restart the system."
# Start a single user shell on the console
if ! sulogin $CONSOLE
then
log_failure_msg "Attempt to start maintenance shell failed.
Will restart in 5 seconds."
sleep 5
fi
[ "$VERBOSE" = no ] || log_action_msg "Will now restart"
reboot -f
elif [ "$FSCKCODE" -gt 1 ]
then
log_failure_msg "The file system check corrected errors on the root partition
but requested that the system be restarted."
log_warning_msg "The system will be restarted in 5 seconds."
sleep 5
[ "$VERBOSE" = no ] || log_action_msg "Will now restart"
reboot -f
fi
#
# Remount root to final mode (rw or ro).
#
# See the comments above at the previous "mount -o remount"
# for an explanation why we try this twice.
#
if ! mount -n -o remount,$rootopts,$rootmode $fstabroot / 2>/dev/null
then
mount -n -o remount,$rootopts,$rootmode /
fi
#
# We only create/modify /etc/mtab if the location where it is
# stored is writable. If /etc/mtab is a symlink into /proc/
# then it is not writable.
#
INIT_MTAB_FILE=no
MTAB_PATH="$(readlink -f /etc/mtab || :)"
case "$MTAB_PATH" in
/proc/*)
;;
/*)
if touch "$MTAB_PATH" >/dev/null 2>&1
then
:> "$MTAB_PATH"
rm -f ${MTAB_PATH}~
INIT_MTAB_FILE=yes
fi
;;
"")
[ -L /etc/mtab ] && MTAB_PATH="$(readlink /etc/mtab)"
if [ "$MTAB_PATH" ]
then
log_failure_msg "Cannot initialize ${MTAB_PATH}."
else
log_failure_msg "Cannot initialize /etc/mtab."
fi
;;
*)
log_failure_msg "Illegal mtab location '${MTAB_PATH}'."
;;
esac
if [ "$INIT_MTAB_FILE" = yes ]
then
[ "$roottype" != none ] &&
mount -f -o $rootopts -t $roottype $fstabroot /
fi
#
# Remove /lib/init/rw/rootdev if we created it.
#
rm -f /lib/init/rw/rootdev
}
do_status () {
# If / is read-write or swap is enabled, this script have done
# its job.
rootrw=false
swapon=false
if [ -f /etc/mtab ] ; then
if grep " / " /etc/mtab |grep -q rw ; then
rootrw=true
fi
fi
if [ -f /proc/swaps ] ; then
if [ "$(cat /proc/swaps |grep -v ^Filename)" ] ; then
swapon=true
fi
fi
if [ true = "$rootrw" ] || [ true = "$swapon" ] ; then
return 0
else
return 4
fi
}
case "$1" in
start|"")
do_start
;;
restart|reload|force-reload)
echo "Error: argument '$1' not supported" >&2
exit 3
;;
stop)
# No-op
;;
status)
do_status
exit $?
;;
*)
echo "Usage: checkroot.sh [start|stop]" >&2
exit 3
;;
esac
: