55 lines
1.2 KiB
Bash
55 lines
1.2 KiB
Bash
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#!/bin/sh -eux
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set -ex
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RASPBIAN_IMAGE=2021-05-07-raspios-buster-armhf-lite.img
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# prepare
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# =======
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mkdir /SWAP
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mount -t 9p -o trans=virtio,version=9p2000.L host0 /SWAP
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echo "http://dl-cdn.alpinelinux.org/alpine/v3.13/community/" >>/etc/apk/repositories
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apk add aria2 coreutils e2fsprogs-extra parted util-linux multipath-tools
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cd /SWAP
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aria2c --seed-time=0 https://downloads.raspberrypi.org/raspios_lite_armhf/images/raspios_lite_armhf-2021-05-28/2021-05-07-raspios-buster-armhf-lite.zip.torrent
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unzip 2021-05-07-raspios-buster-armhf-lite.zip
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rm 2021-05-07-raspios-buster-armhf-lite.zip*
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# building
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# ========
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imagePath=$RASPBIAN_IMAGE
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# resize partition
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truncate -s +5G "$imagePath"
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parted "$imagePath" resizepart 2 5G
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# create loop devices
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kpartx -avs "$imagePath"
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ls -la /dev/mapper
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bootLoopDevice="$(find /dev/mapper -name 'loop*p1')"
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systemLoopDevice="$(find /dev/mapper -name 'loop*p2')"
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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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# resize filesystem
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resize2fs "$systemLoopDevice"
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# enable ssh
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mkdir -p boot
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mount "$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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