37 lines
792 B
Bash
37 lines
792 B
Bash
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#!/bin/sh
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set -ex
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if [ -z "$RASPBIAN_IMAGE" ]; then
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echo "missing \$RASPBIAN_IMAGE environment variable"
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exit 1
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fi
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imagePath=$RASPBIAN_IMAGE
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# resize partition
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truncate -s +3G "$imagePath"
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parted "$imagePath" resizepart 2 3G
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# create loop devices
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bootLoopDevice="$(kpartx -l "$imagePath" | sed -n 1p | awk '{print $1}')"
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systemLoopDevice="$(kpartx -l "$imagePath" | sed -n 2p | awk '{print $1}')"
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if [ -z "$bootLoopDevice" ] || [ -z "$systemLoopDevice" ]; then
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echo "could not extract loop devices"
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exit 1
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fi
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kpartx -avs "$imagePath"
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# resize filesystem
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resize2fs "/dev/mapper/${systemLoopDevice}"
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# enable ssh
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mkdir -p boot
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mount -o loop "/dev/mapper/${bootLoopDevice}" boot
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touch boot/ssh
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# cleaning up
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umount boot
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kpartx -d "$imagePath"
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rm -rf boot
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