|
|
logger -t "rc.firstboot" "Expanding root partition"
|
|
|
|
|
|
# Detect root partition device
|
|
|
ROOT_PART=$(mount | sed -n 's|^/dev/\(.*\) on / .*|\1|p')
|
|
|
if [ -z "$ROOT_PART" ] ; then
|
|
|
log_warning_msg "unable to detect root partition device"
|
|
|
return 1
|
|
|
fi
|
|
|
|
|
|
# Extract root device name
|
|
|
case "${ROOT_PART}" in
|
|
|
mmcblk0*) ROOT_DEV=mmcblk0 ;;
|
|
|
sda*) ROOT_DEV=sda ;;
|
|
|
esac
|
|
|
|
|
|
# Check detected root partition name
|
|
|
PART_NUM=$(echo ${ROOT_PART} | grep -o '[1-9][0-9]*$')
|
|
|
if [ "$PART_NUM" = "$ROOT_PART" ] ; then
|
|
|
logger -t "rc.firstboot" "$ROOT_PART is not an SD card. Don't know how to expand"
|
|
|
return 0
|
|
|
fi
|
|
|
|
|
|
# NOTE: the NOOBS partition layout confuses parted. For now, let's only
|
|
|
# agree to work with a sufficiently simple partition layout
|
|
|
if [ "$PART_NUM" -gt 2 ] ; then
|
|
|
logger -t "rc.firstboot" "Your partition layout is not currently supported by this tool."
|
|
|
return 0
|
|
|
fi
|
|
|
|
|
|
# Check if last partition number
|
|
|
LAST_PART_NUM=$(parted /dev/${ROOT_DEV} -ms unit s p | tail -n 1 | cut -f 1 -d:)
|
|
|
if [ $LAST_PART_NUM -ne $PART_NUM ]; then
|
|
|
logger -t "rc.firstboot" "$ROOT_PART is not the last partition. Don't know how to expand"
|
|
|
return 0
|
|
|
fi
|
|
|
|
|
|
# Get the starting offset of the root partition
|
|
|
PART_START=$(parted /dev/${ROOT_DEV} -ms unit s p | grep "^${PART_NUM}" | cut -f 2 -d: | sed 's/[^0-9]//g')
|
|
|
if [ -z "$PART_START" ] ; then
|
|
|
logger -t "rc.firstboot" "${ROOT_DEV} unable to get starting sector of the partition"
|
|
|
return 1
|
|
|
fi
|
|
|
|
|
|
# Get the possible last sector for the root partition
|
|
|
PART_LAST=$(fdisk -l /dev/${ROOT_DEV} | grep '^Disk.*sectors' | awk '{ print $7 - 1 }')
|
|
|
if [ -z "$PART_LAST" ] ; then
|
|
|
logger -t "rc.firstboot" "${ROOT_DEV} unable to get last sector of the partition"
|
|
|
return 1
|
|
|
fi
|
|
|
|
|
|
### Since rc.local is run with "sh -e", let's add "|| true" to prevent premature exit
|
|
|
fdisk /dev/${ROOT_DEV} <<EOF2 || true
|
|
|
p
|
|
|
d
|
|
|
$PART_NUM
|
|
|
n
|
|
|
p
|
|
|
$PART_NUM
|
|
|
$PART_START
|
|
|
$PART_LAST
|
|
|
p
|
|
|
w
|
|
|
EOF2
|
|
|
|
|
|
# Reload the partition table, resize root filesystem then remove resizing code from this file
|
|
|
partprobe &&
|
|
|
resize2fs /dev/${ROOT_PART} &&
|
|
|
logger -t "rc.firstboot" "Root partition successfully resized."
|
|
|
|
