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die better

pull/1/head
tastytea 2015-09-29 21:05:29 +02:00
parent d41028875c
commit 0c3bd88246
1 changed files with 7 additions and 18 deletions
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25
hashboot.sh
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@ -24,6 +24,7 @@ function die
umount /boot umount /boot
fi fi
[ -z "${2}" ] || echo "${2}" >&2
exit ${1} exit ${1}
} }
@ -31,8 +32,7 @@ function die
#If we're not root: exit #If we're not root: exit
if [ ${UID} -ne 0 ] if [ ${UID} -ne 0 ]
then then
echo "You have to be root" >&2 die 4 "You have to be root"
die 4
fi fi
#Try different hashers, use the most secure #Try different hashers, use the most secure
@ -44,11 +44,7 @@ test -z ${HASHER} && HASHER=$(/usr/bin/which --skip-dot sha224sum 2> /dev/null)
test -z ${HASHER} && HASHER=$(/usr/bin/which --skip-dot sha1sum 2> /dev/null) test -z ${HASHER} && HASHER=$(/usr/bin/which --skip-dot sha1sum 2> /dev/null)
test -z ${HASHER} && HASHER=$(/usr/bin/which --skip-dot md5sum 2> /dev/null) test -z ${HASHER} && HASHER=$(/usr/bin/which --skip-dot md5sum 2> /dev/null)
#If we found no hasher: exit #If we found no hasher: exit
if [ -z ${HASHER} ] [ -z ${HASHER} ] && die 5 "No hash calculator found"
then
echo "No hash calculator found" >&2
die 5
fi
#If /boot is in fstab but not mounted: mount, mark as mounted #If /boot is in fstab but not mounted: mount, mark as mounted
if grep -q '/boot.*noauto' /etc/fstab && ! grep -q /boot /etc/mtab if grep -q '/boot.*noauto' /etc/fstab && ! grep -q /boot /etc/mtab
@ -63,11 +59,7 @@ then
if [ -f ${CONFIG_FILE} ] if [ -f ${CONFIG_FILE} ]
then then
MBR_DEVICE=$(grep mbr_device ${CONFIG_FILE} | awk '{print $3}') MBR_DEVICE=$(grep mbr_device ${CONFIG_FILE} | awk '{print $3}')
if [ $? != 0 ] [ $? != 0 ] && die 9 "Error reading config file"
then
echo "Error reading config file" >&2
die 9
fi
#If not found, create one and ask for ${MBR_DEVICE} #If not found, create one and ask for ${MBR_DEVICE}
else else
echo -n "Which device contains the MBR? [/dev/sda] " echo -n "Which device contains the MBR? [/dev/sda] "
@ -88,8 +80,7 @@ then
then then
echo "List of hashes written to ${DIGEST_FILE}" echo "List of hashes written to ${DIGEST_FILE}"
else else
echo "Error writing ${DIGEST_FILE}" >&2 die 7 "Error writing ${DIGEST_FILE}"
die 7
fi fi
#Backup of good files #Backup of good files
tar -czpPf ${BACKUP_FILE} ${MBR_TMP} /boot ${DIGEST_FILE} tar -czpPf ${BACKUP_FILE} ${MBR_TMP} /boot ${DIGEST_FILE}
@ -97,8 +88,7 @@ then
then then
echo "Backup written to ${BACKUP_FILE}" echo "Backup written to ${BACKUP_FILE}"
else else
echo "Error writing ${BACKUP_FILE}" >&2 die 7 "Error writing ${BACKUP_FILE}"
die 7
fi fi
elif [ "${1}" == "check" ] elif [ "${1}" == "check" ]
then then
@ -136,8 +126,7 @@ then
fi fi
done done
else else
echo "Usage: ${0} index|check|recover" >&2 die 6 "Usage: ${0} index|check|recover"
die 6
fi fi
die 0 die 0