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|
#!/bin/sh
### BEGIN INIT INFO
# Provides: checkfs-loop
# Required-Start: checkroot
# Required-Stop:
# Should-Start: udev devfsd raid2 mdadm lvm
# Should-Stop:
# Default-Start: S
# Default-Stop:
# Short-Description: Check loop-encrypted filesystems.
### END INIT INFO
#
# NOTE: This script duplicates much of checkfs.sh as we need to
# work on the decrypted loop devices, which fsck -A doesn't know
# about. The maintainer of this script should track changes in
# checkfs.sh and make sure they are applied.
#
# $Id$
PATH=/sbin:/bin
FSCK_LOGFILE=/var/log/fsck/loop
[ "$FSCKFIX" ] || FSCKFIX=no
. /lib/init/vars.sh
. /lib/lsb/init-functions
[ -r /etc/default/checkfs-loop ] && . /etc/default/checkfs-loop
case "$CHECKFS_LOOP_ENABLE" in
[Yy]*)
;;
*)
exit 0
;;
esac
# We need to check that the /sbin/losetup binary comes from
# loop-aes-utils and not mount. Assume that if /sbin/losetup.orig
# exists the diversion is in place.
if [ ! -x /sbin/losetup.orig ]
then
exit 0
fi
list_fsck_loops () {
grep -v '^#' /etc/fstab |
while read dev mnt fstype opts freq passno; do
fsck=yes
loopdev=
for opt in $(IFS=, && echo $opts)
do
case $opt in
noauto|sw|phash=random*)
fsck=no
;;
loop=/dev/loop*)
loopdev=${opt#loop=}
;;
esac
done
if [ -z "$loopdev" ] || [ "$mnt" = / ] || [ "$fsck" = no ]
then
continue
fi
echo $loopdev:$mnt
done
}
retries=3
do_losetup () {
loop=${1%:*}
mnt=${1#*:}
log_action_msg "Setting up $loop ($mnt)"
try=0
while [ $try -lt $retries ]
do
if losetup -F $loop
then
return 0
fi
try=$((try+1))
done
return 1
}
# TODO We can't do anything about FSCKTYPES settings other than "none"
do_fsck () {
loopdevs="$@"
# See if we're on AC Power
# If not, we're not gonna run our check
if which on_ac_power >/dev/null 2>&1
then
on_ac_power >/dev/null 2>&1
if [ $? -eq 1 ]
then
[ "$VERBOSE" = no ] || log_success_msg "Running on battery power, so skipping loop file system check."
BAT=yes
fi
fi
#
# Check loop-encrypted file systems.
#
if [ ! -f /fastboot ] && [ ! "$BAT" ] && [ "$FSCKTYPES" != "none" ]
then
if [ -f /forcefsck ]
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
[ "$(uname -m)" = s390 ] && spinner="" # This should go away
handle_failed_fsck() {
log_failure_msg "File system check failed.
A log is being saved in ${FSCK_LOGFILE} if that location is writable.
Please repair the file system manually."
log_warning_msg "A maintenance shell will now be started.
CONTROL-D will terminate this shell and resume system boot."
# Start a single user shell on the console
if ! sulogin $CONSOLE
then
log_failure_msg "Attempt to start maintenance shell failed.
Continuing with system boot in 5 seconds."
sleep 5
fi
}
failed=
for device in $loopdevs
do
if [ "$VERBOSE" = no ]
then
logsave -s $FSCK_LOGFILE fsck $spinner $fix $force $device
FSCKCODE=$?
if [ "$FSCKCODE" -gt 1 ]
then
failed=1
fi
else
logsave -s $FSCK_LOGFILE fsck $spinner -V $fix $force $device
FSCKCODE=$?
if [ "$FSCKCODE" -gt 1 ]
then
failed=1
fi
fi
done
if [ "$failed" ]
then
handle_failed_fsck
else
if [ "$VERBOSE" = yes ]
then
log_success_msg "Done checking loop-encrypted file systems.
A log is being saved in ${FSCK_LOGFILE} if that location is writable."
fi
fi
fi
# Do not delete those, we are running before checkfs and it will
# still need them
#rm -f /fastboot /forcefsck
}
do_start () {
log_action_msg "Checking loop-encrypted file systems"
modprobe -q loop || true
check_loops=
for device in $(list_fsck_loops)
do
if do_losetup $device
then
check_loops="$check_loops ${device%:*}"
fi
done
do_fsck $check_loops
}
case "$1" in
start|"")
do_start
;;
restart|reload|force-reload)
echo "Error: argument '$1' not supported" >&2
exit 3
;;
stop)
# No-op
;;
*)
echo "Usage: checkfs-loop [start|stop]" >&2
exit 3
;;
esac
:
|
