disco/client/bin/disco-fs-diff

#!/bin/bash

. /etc/disco/client.cfg

SCRIPTROOT=$(dirname $(readlink -f $0))
if [ "$NOOP" != "" ]; then
    DISCOROOT=/var/disco/testfs/noop
else
    DISCOROOT=/var/disco/testfs/real
fi

cd $DISCOROOT

rsync --checksum --times --perms --owner --group -ani ./scratchfs/ ./rootfs/ |\
    grep -v ".unionfs.*/$" |\
    sed s/"\.\/scratchfs"/""/ |\
    sed s/"\.unionfs\/"/""/ |\
    grep -v "./$" |\
    sed s/"^[<>ch\.*]d"/"File: directory: "/ |\
    sed s/"^[<>ch\.*]f"/"File: file: "/ |\
    sed s/"^[<>ch\.*]L"/"File: symlink: "/ |\
    sed s/"^[<>ch\.*]D"/"File: device: "/ |\
    sed s/"^[<>ch\.*]S"/"File: special: "/ |\
    sed s/": \([\.cstpoguax+]*\) \(.*\)$"/": \2 : \1"/ |\
    sed s/"+++++++++$"/"Created"/ |\
    sed s/" [\.cstpoguax]*$"/" Modified"/ |\
    sed s/"_HIDDEN~ : Created"/" : Deleted"/ |\
    sed s/"^\(.*\)\$"/"info: \1"/g |\
while read LINE
do
    FNAME=$(echo $LINE | cut -d : -f 4 | sed s/"^ *"/""/ | sed s/" *$"/""/)

    # ----- File modification/creation data
    MODSTR=""
    MD5_NEW=$(md5sum ${DISCOROOT}/scratchfs/${FNAME} 2>/dev/null| cut -d " " -f 1)
    MD5_OLD=$(md5sum /${FNAME} 2>/dev/null| cut -d " " -f 1)
    if [ "$MD5_NEW" != "$MD5_OLD" ]; then
	MODSTR="$MODSTR md5=[$MD5_OLD => $MD5_NEW]"
    fi
    PERMS_NEW=$(stat --format "%G:%U %a" ${DISCOROOT}/scratchfs/${FNAME} 2>/dev/null)
    PERMS_OLD=$(stat --format "%G:%U %a" /${FNAME} 2>/dev/null)
    if [ "$PERMS_NEW" != "$PERMS_OLD" ]; then
	MODSTR="$MODSTR perms=[$PERMS_OLD => $PERMS_NEW]"
    fi
    SELINUX_NEW=$(stat --format "%C" ${DISCOROOT}/scratchfs/${FNAME} 2>/dev/null)
    SELINUX_OLD=$(stat --format "%C" /${FNAME} 2>/dev/null)
    if [ "$SELINUX_NEW" != "$SELINUX_OLD" ]; then
	MODSTR="$MODSTR selinux=[$SELINUX_OLD => $SELINUX_NEW]"
    fi
    TYPE_NEW=$(stat --format "%F" ${DISCOROOT}/scratchfs/${FNAME} 2>/dev/null)
    TYPE_OLD=$(stat --format "%F" /${FNAME} 2>/dev/null)
    if [ "$TYPE_NEW" != "$TYPE_OLD" ]; then
	MODSTR="$MODSTR type=[$TYPE_OLD => $TYPE_NEW]"
    fi
    RAWMODE_NEW=$(stat --format "%f" ${DISCOROOT}/scratchfs/${FNAME} 2>/dev/null)
    RAWMODE_OLD=$(stat --format "%f" /${FNAME} 2>/dev/null)
    if [ "$RAWMODE_NEW" != "$RAWMODE_OLD" ]; then
	MODSTR="$MODSTR mode=[$RAWMODE_OLD => $RAWMODE_NEW]"
    fi
    DEVICE_NEW=$(stat --format "%D" ${DISCOROOT}/scratchfs/${FNAME} 2>/dev/null)
    DEVICE_OLD=$(stat --format "%D" /${FNAME} 2>/dev/null)
    if [ "$DEVICE_NEW" != "$DEVICE_OLD" ]; then
	MODSTR="$MODSTR device=[$DEVICE_OLD => $DEVICE_NEW]"
    fi
    if [ ! -d /${FNAME} ] && [ ! -d ${DISCOROOT}/scratchfs/${FNAME} ]; then 
	diff -N /${FNAME} ${DISCOROOT}/scratchfs/${FNAME} 2>/dev/null > /tmp/$$.diff
    fi

    # ------

    echo $LINE |\
        sed -e s/"Created$"/"Created : type=[${TYPE_NEW}] device=[${DEVICE_NEW}] mode=[${RAWMODE_NEW}] selinux=[${SELINUX_NEW}] md5=[${MD5_NEW}] perms=[${PERMS_NEW}]"/ |\
        sed -e s/"Modified$"/"Modified :${MODSTR}"/ |\
        sed s/"^\([a-z]*\): File: \([a-z]*\): "/"\1: File: \2: \/"/
    if [ -f /tmp/$$.diff ]; then
	cat /tmp/$$.diff
    fi
    rm -f /tmp/$$* 2>/dev/null 
done

rm -f /tmp/$$*