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108 lines
2.5 KiB
108 lines
2.5 KiB
#!/bin/sh
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reboot_pi () {
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umount /uboot
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sync
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echo b > /proc/sysrq-trigger
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sleep 5
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exit 0
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}
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check_commands () {
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if ! command -v whiptail > /dev/null; then
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FAIL_REASON="whiptail not found"
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sleep 5
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return 1
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fi
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for COMMAND in grep cut sed parted fdisk; do
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if ! command -v $COMMAND > /dev/null; then
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FAIL_REASON="$COMMAND not found"
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return 1
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fi
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done
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return 0
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}
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get_variables () {
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# /sys/block/mmcblk0/mmcblk0p4/
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ROOT_PART_NAME="mmcblk0p4"
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ROOT_DEV_NAME="mmcblk0"
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ROOT_DEV="/dev/${ROOT_DEV_NAME}"
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ROOT_PART_NUM=`cat /sys/block/${ROOT_DEV_NAME}/${ROOT_PART_NAME}/partition`
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BOOT_PART_DEV=`cat /proc/mounts | grep " /uboot " | cut -d " " -f 1`
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BOOT_PART_NAME=`echo $BOOT_PART_DEV | cut -d "/" -f 3`
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BOOT_DEV_NAME=`echo /sys/block/*/${BOOT_PART_NAME} | cut -d "/" -f 4`
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BOOT_PART_NUM=`cat /sys/block/${BOOT_DEV_NAME}/${BOOT_PART_NAME}/partition`
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ROOT_DEV_SIZE=`cat /sys/block/${ROOT_DEV_NAME}/size`
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TARGET_END=`expr $ROOT_DEV_SIZE - 1`
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PARTITION_TABLE=`parted -m $ROOT_DEV unit s print | tr -d 's'`
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LAST_PART_NUM=`echo "$PARTITION_TABLE" | tail -n 1 | cut -d ":" -f 1`
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ROOT_PART_LINE=`echo "$PARTITION_TABLE" | grep -e "^${ROOT_PART_NUM}:"`
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ROOT_PART_START=`echo $ROOT_PART_LINE | cut -d ":" -f 2`
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ROOT_PART_END=`echo $ROOT_PART_LINE | cut -d ":" -f 3`
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}
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check_variables () {
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if [ $ROOT_PART_NUM -ne $LAST_PART_NUM ]; then
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FAIL_REASON="Data partition should be last partition"
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return 1
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fi
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if [ $ROOT_PART_END -gt $TARGET_END ]; then
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FAIL_REASON="Data partition runs past the end of device"
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return 1
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fi
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if [ ! -b $ROOT_DEV ] || [ ! -b $ROOT_PART_DEV ] || [ ! -b $BOOT_PART_DEV ] ; then
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FAIL_REASON="Could not determine partitions"
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return 1
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fi
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}
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main () {
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get_variables
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if ! check_variables; then
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return 1
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fi
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if [ $ROOT_PART_END -eq $TARGET_END ]; then
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reboot_pi
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fi
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if ! parted -m $ROOT_DEV u s resizepart $ROOT_PART_NUM $TARGET_END; then
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FAIL_REASON="Data partition resize failed"
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return 1
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fi
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return 0
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}
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mount -t proc proc /proc
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mount -t sysfs sys /sys
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mount /uboot
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sed -i 's| init=/usr/lib/raspi-config/init_resize.sh||' /uboot/cmdline.txt
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mount /uboot -o remount,ro
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sync
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echo 1 > /proc/sys/kernel/sysrq
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if ! check_commands; then
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reboot_pi
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fi
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if main; then
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whiptail --infobox "Resized data partition. Rebooting in 5 seconds..." 20 60
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sleep 5
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else
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sleep 5
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whiptail --msgbox "Could not expand filesystem, please try raspi-config.\n${FAIL_REASON}" 20 60
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fi
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reboot_pi
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