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#!/bin/sh
# Query a disk for partitions and display them
#############################
. ${PROGDIR}/backend/functions.sh
if [ -z "${1}" ] ; then
echo "Error: No disk specified!"
exit 1
fi
if [ -z "${2}" ] ; then
echo "Error: No size specified!"
exit 1
fi
if [ ! -e "/dev/${1}" ] ; then
echo "Error: Disk /dev/${1} does not exist!"
exit 1
fi
DISK="${1}"
MB="${2}"
TOTALBLOCKS="`expr $MB \* 2048`"
# Lets figure out what number this slice will be
LASTSLICE="`fdisk -s /dev/${DISK} 2>/dev/null | grep -v ${DISK} | grep ':' | tail -n 1 | cut -d ':' -f 1 | tr -s '\t' ' ' | tr -d ' '`"
if [ -z "${LASTSLICE}" ] ; then
LASTSLICE="1"
else
LASTSLICE="`expr $LASTSLICE + 1`"
fi
if [ ${LASTSLICE} -gt "4" ] ; then
echo "Error: FreeBSD MBR setups can only have a max of 4 slices"
exit 1
fi
SLICENUM="${LASTSLICE}"
# Lets get the starting block
if [ "${SLICENUM}" = "1" ] ; then
STARTBLOCK="63"
else
# Lets figure out where the prior slice ends
checkslice="`expr ${SLICENUM} - 1`"
# Get starting block of this slice
fdisk -s /dev/${DISK} | grep -v "${DISK}:" | grep "${checkslice}:" | tr -s " " >${TMPDIR}/pfdisk
pstartblock="`cat ${TMPDIR}/pfdisk | cut -d ' ' -f 3`"
psize="`cat ${TMPDIR}/pfdisk | cut -d ' ' -f 4`"
STARTBLOCK="`expr ${pstartblock} + ${psize}`"
fi
# If this is an empty disk, see if we need to create a new MBR scheme for it
gpart show ${DISK} >/dev/null 2>/dev/null
if [ "$?" != "0" -a "${SLICENUM}" = "1" ] ; then
gpart create -s mbr ${DISK}
fi
gpart add -b ${STARTBLOCK} -s ${TOTALBLOCKS} -t freebsd -i ${SLICENUM} ${DISK}
exit "$?"
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