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even more MBR stuff :-)

pull/1/head
tastytea 2015-09-29 19:44:01 +02:00
parent 6ebbd9ee69
commit 85b5f869c6
1 changed files with 7 additions and 17 deletions
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24
hashboot.sh
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@ -61,7 +61,7 @@ then
#Write header #Write header
echo "#hashboot ${VERSION} - Algorithm: $(basename ${HASHER})" > ${DIGEST_FILE} echo "#hashboot ${VERSION} - Algorithm: $(basename ${HASHER})" > ${DIGEST_FILE}
#Write MBR of MBR_DEVICE to ${DIGEST_FILE} #Write MBR of MBR_DEVICE to ${DIGEST_FILE}
dd if=/dev/sda of=${MBR_TMP} bs=1M count=1 status=noxfer || die 8 dd if=${MBR_DEVICE} of=${MBR_TMP} bs=1M count=1 status=noxfer || die 8
#Write hashes of all regular files to ${DIGEST_FILE} #Write hashes of all regular files to ${DIGEST_FILE}
${HASHER} ${MBR_TMP} > ${DIGEST_FILE} ${HASHER} ${MBR_TMP} > ${DIGEST_FILE}
find /boot -type f -exec ${HASHER} --binary {} >> ${DIGEST_FILE} + find /boot -type f -exec ${HASHER} --binary {} >> ${DIGEST_FILE} +
@ -84,7 +84,7 @@ then
elif [ "${1}" == "check" ] elif [ "${1}" == "check" ]
then then
COUNTER=0 COUNTER=0
dd if=/dev/sda of=${MBR_TMP} bs=1M count=1 status=noxfer || die 8 dd if=${MBR_DEVICE} of=${MBR_TMP} bs=1M count=1 status=noxfer || die 8
if $(grep ${MBR_TMP} ${DIGEST_FILE} | ${HASHER} --check --warn --quiet --strict > ${LOG_FILE}) if $(grep ${MBR_TMP} ${DIGEST_FILE} | ${HASHER} --check --warn --quiet --strict > ${LOG_FILE})
then then
echo "MBR ok" echo "MBR ok"
@ -95,7 +95,6 @@ then
if $(grep -v ${MBR_TMP} ${DIGEST_FILE} | ${HASHER} --check --warn --quiet --strict >> ${LOG_FILE}) if $(grep -v ${MBR_TMP} ${DIGEST_FILE} | ${HASHER} --check --warn --quiet --strict >> ${LOG_FILE})
then then
echo "/boot ok" echo "/boot ok"
die 0
else else
echo " !! TIME TO PANIK: AT LEAST 1 FILE WAS MODIFIED !!" echo " !! TIME TO PANIK: AT LEAST 1 FILE WAS MODIFIED !!"
COUNTER=$((COUNTER + 2)) COUNTER=$((COUNTER + 2))
@ -109,21 +108,12 @@ then
for file in $(cut -d: -f1 ${LOG_FILE}) for file in $(cut -d: -f1 ${LOG_FILE})
do do
tar -xzpPvwf ${BACKUP_FILE} ${file} tar -xzpPvwf ${BACKUP_FILE} ${file}
[ $? != 0 ] && echo "Error restoring ${file} from backup, continuing" [ $? != 0 ] && echo "Error restoring ${file} from backup, continuing" >&2
# If the MBR is to be recovered, ask if it really should be copied to /dev/sda. #If the MBR is to be recovered, copy to ${MBR_DEVICE}
# Should be no problem to do it automatically, but it is untested and would if [ "${file}" == ${MBR_TMP} ]
# be really bad if there is an error.
if [ "$file" == ${MBR_TMP} ]
then then
echo "Backup of MBR copied to ${MBR_TMP}, copy it to /dev/sda? (DANGEROUS) [y/N] " cp ${MBR_TMP} ${MBR_DEVICE}
read -r yesno [ $? != 0 ] && echo "Error restoring MBR from backup, continuing" >&2
if [ "${yesno}" == "y" ]
then
cp ${MBR_TMP} /dev/sda
else
echo "MBR not recovered, you can copy it manually with:"
echo "cp ${MBR_TMP} /dev/sda"
fi
fi fi
done done
else else