mirror of
https://github.com/j-a-n/raspberrymatic-addon-rmupdate.git
synced 2023-10-10 13:37:40 +02:00
65 lines
1.9 KiB
Bash
Executable File
65 lines
1.9 KiB
Bash
Executable File
#!/bin/bash -e
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LOOP_DEV=4
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BOOT_SIZE=$((100*1024*1024))
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ROOT_SIZE=$((1900*1024*1024))
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USR_LOCAL_SIZE=$((2*1024*1024))
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if [[ $EUID -ne 0 ]]; then
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echo "This script must be run as root." 1>&2
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exit 1
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fi
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image_file="$1"
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new_image_file="${1/\.img/\.adjusted\.img}"
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echo "*** Creating new image file and partitions ***"
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dd if=/dev/zero of=$new_image_file bs=1M count=$((((${BOOT_SIZE}+${ROOT_SIZE}+${USR_LOCAL_SIZE})/1024/1024)+1))
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parted --script $new_image_file \
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mklabel msdos \
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mkpart primary fat16 512B ${BOOT_SIZE}B \
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set 1 boot on \
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mkpart primary ext4 $((512+${BOOT_SIZE}))B $((${BOOT_SIZE}+${ROOT_SIZE}))B \
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mkpart primary ext4 $((512+${BOOT_SIZE}+${ROOT_SIZE}))B 100%
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echo "*** Copying original partitons ***"
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oIFS="$IFS"
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IFS=$'\n'
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for line in $(parted $image_file unit B print | grep primary); do
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IFS=$oIFS
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x=($line)
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num=${x[0]}
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start=$((${x[1]:0: -1}/512))
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size=$((${x[3]:0: -1}/512))
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echo $num - $start - $size
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seek=0
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[ "$num" = "1" ] && seek=$start
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[ "$num" = "2" ] && seek=$(((512+${BOOT_SIZE})/512))
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[ "$num" = "3" ] && seek=$(((512+${BOOT_SIZE}+${ROOT_SIZE})/512))
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dd if=$image_file of=$new_image_file bs=512 skip=$start count=$size seek=$seek conv=notrunc
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done
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echo "*** Resizing filesystems ***"
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rm /dev/mapper/loop${LOOP_DEV}p 2>/dev/null || true
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kpartx -d /dev/loop${LOOP_DEV} 2>/dev/null || true
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losetup -d /dev/loop${LOOP_DEV} 2>/dev/null || true
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losetup /dev/loop${LOOP_DEV} $new_image_file
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kpartx -a /dev/loop${LOOP_DEV}
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ln -s /dev/loop${LOOP_DEV} /dev/mapper/loop${LOOP_DEV}p
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#fsck.vfat -a /dev/mapper/loop${LOOP_DEV}p1
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fatresize --size $BOOT_SIZE /dev/mapper/loop${LOOP_DEV}p1
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fsck.ext4 -f -y /dev/mapper/loop${LOOP_DEV}p2
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resize2fs /dev/mapper/loop${LOOP_DEV}p2
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fsck.ext4 -f -y /dev/mapper/loop${LOOP_DEV}p3
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resize2fs /dev/mapper/loop${LOOP_DEV}p3
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rm /dev/mapper/loop${LOOP_DEV}p
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kpartx -d /dev/loop${LOOP_DEV}
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losetup -d /dev/loop${LOOP_DEV}
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echo "*** Resized image successfully created ***"
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