#!/bin/sh
# Authors:
# Mads Chr. Olesen <[email protected]>
# Kees Cook <[email protected]>
set -e

# poor mans force
if [ "$1" = "--force" ]; then
NEEDS_FSCK_CHECK=yes
fi

# check time when we did the last check
stamp="/var/lib/update-notifier/fsck-at-reboot"
if [ -e "$stamp" ]; then
stampt=$(stat -c %Y $stamp)
else
stampt=0
fi

# check time when we last booted
last_boot=$(date -d "now - $(awk '{print $1}' /proc/uptime) seconds" +%s)

now=$(date +%s)
if [ $(($stampt + 3600)) -lt $now ] || [ $stampt -gt $now ] \
|| [ $stampt -lt $last_boot ]
then
#echo $stampt $now need update
NEEDS_FSCK_CHECK=yes
fi

# output something for update-motd
if [ -n "$NEEDS_FSCK_CHECK" ]; then
{
check_occur_any=

ext_partitions=$(mount | awk '$5 ~ /^ext(2|3|4)$/ { print $1 }')
for part in $ext_partitions; do
dumpe2fs_out=$(dumpe2fs -h $part 2>/dev/null)
mount_count=$(echo "$dumpe2fs_out" | grep "^Mount count:"|cut -d':' -f 2-)
if [ -z "$mount_count" ]; then mount_count=0; fi
max_mount_count=$(echo "$dumpe2fs_out" | grep "^Maximum mount count:"|cut -d':' -f 2-)
if [ -z "$max_mount_count" ]; then max_mount_count=0; fi
check_interval=$(echo "$dumpe2fs_out" | grep "^Check interval:" | cut -d':' -f 2- | cut -d'(' -f 1)
if [ -z "$check_interval" ]; then check_interval=0; fi
next_check_date=$(echo "$dumpe2fs_out" | grep "^Next check after:" | cut -d':' -f 2-)
if [ -z "$next_check_interval" ]; then next_check_interval=0; fi
next_check_tstamp=$(date -d "$next_check_date" +%s)

#echo "next_check_date=\"$next_check_date\" next_check_tstamp=\"$next_check_tstamp\""
#echo "part=\"$part\" mount_count=\"$mount_count\" / max=\"$max_mount_count\" "

check_occur=
# Check based on mount counts?
if [ "$max_mount_count" -gt 0 -a \
"$mount_count" -ge "$max_mount_count" ]; then
check_occur=yes
fi
# Check based on time passed?
if [ "$check_interval" -gt 0 -a \
"$next_check_tstamp" -lt "$now" ]; then
check_occur=yes
fi
if [ -n "$check_occur" ]; then
check_occur_any=yes
mountpoint=$(mount | grep "^$part" | cut -d ' ' -f 3)
pass=$(grep -v '^#' /etc/fstab | tr -s ' ' '\t' | cut -s -f 2,6 | grep -w "$mountpoint" | cut -f 2)
if [ "$pass" = "0" ]; then
echo "*** $part should be checked for errors ***"
else
echo "*** $part will be checked for errors at next reboot ***"
fi
fi
done
if [ -n "$check_occur_any" ]; then
echo ""
fi
} > $stamp
fi

# output what we have (either cached or newly generated)
cat $stamp