#!/bin/sh
# /etc/cron.daily/standard: standard daily maintenance script

# Start in the root filesystem
cd /

LOCKFILE='/var/lock/cron.daily'
umask 022


# Avoid running more than one at a time
if [ -x /usr/bin/lockfile-create ]
then
    lockfile-create $LOCKFILE
    if [ $? -ne 0 ]
    then
        cat <<EOF

Unable to run /etc/cron.daily/standard because lockfile $LOCKFILE
acquisition failed. This probably means that the previous day's
instance is still running. Please check and correct if necessary.

EOF
        exit 1
    fi
    # Keep lockfile fresh
    lockfile-touch $LOCKFILE &
    LOCKTOUCHPID="$!"
fi

# Check to see if any files are in lost+found directories and warn admin
# Get a list of the (potential) ext2, ext3 and xfs l+f directories
df -P --type=ext2 --type=ext3 --type=xfs 2>/dev/null |
awk '/\/dev\// { print }' | sed -e 's/ [[:space:]]*/ /g'  |
    while read mount block used avail perc mp
    do
        [ "$mp" = "/" ] && mp=""
        echo "$mp/lost+found"
    done |
    while read lfdir
    do
        # In each directory, look for files
        if [ -d "$lfdir" ]
        then
            more_lost_found=`ls -1  "$lfdir" | grep -v 'lost+found$' | sed 's/^/    /'`
            if [ -n "$more_lost_found" ]
            then
                lost_found="$lost_found

$lfdir:
$more_lost_found"
               # NOTE: above weird line breaks in string are intentional!
            fi
        else
            no_lost_found="$no_lost_found
$lfdir"
        fi
    done

# NOTE: This might need to be configurable if systems abound
# w/o lost+found out there to prevent giving out this warning
# every day.
if [ -n "$lost_found" ]
then
    cat << EOF
Files were found in lost+found directories. This is probably
the result of a crash or bad shutdown, or possibly of a disk
problem. These files may contain important information. You
should examine them, and move them out of lost+found or delete
them if they are not important.

The following files were found:
$lost_found
EOF
fi

if [ -n "$no_lost_found" ]
then
    cat << EOF
Some local filesystems do not have lost+found directories. This
means that these filesystems will not be able to recover
lost files when the filesystem is checked after a crash.
Consider creating a lost+found directory with mklost+found(8).

The following lost+found directories were not available:
$no_lost_found
EOF
fi

# Clean up lockfile
if [ -x /usr/bin/lockfile-create ]
then
    kill $LOCKTOUCHPID
    lockfile-remove $LOCKFILE
fi