81 lines
2.8 KiB
Bash
81 lines
2.8 KiB
Bash
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#!/bin/bash -ex
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BASEURL="$1"
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. /etc/os-release
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CURRENT_ROOT_HASH=$(</proc/cmdline)
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CURRENT_ROOT_HASH=${CURRENT_ROOT_HASH#*roothash=}
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CURRENT_ROOT_HASH=${CURRENT_ROOT_HASH%% *}
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CURRENT_ROOT_UUID=${CURRENT_ROOT_HASH:32:8}-${CURRENT_ROOT_HASH:40:4}-${CURRENT_ROOT_HASH:44:4}-${CURRENT_ROOT_HASH:48:4}-${CURRENT_ROOT_HASH:52:12}
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CURRENT_HASH_UUID=${CURRENT_ROOT_HASH:0:8}-${CURRENT_ROOT_HASH:8:4}-${CURRENT_ROOT_HASH:12:4}-${CURRENT_ROOT_HASH:16:4}-${CURRENT_ROOT_HASH:20:12}
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[[ /dev/disk/by-partlabel/root1 -ef /dev/disk/by-partuuid/${CURRENT_ROOT_UUID} ]] \
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&& [[ /dev/disk/by-partlabel/ver1 -ef /dev/disk/by-partuuid/${CURRENT_HASH_UUID} ]] \
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&& NEW_ROOT_NUM=2
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[[ /dev/disk/by-partlabel/root2 -ef /dev/disk/by-partuuid/${CURRENT_ROOT_UUID} ]] \
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&& [[ /dev/disk/by-partlabel/ver2 -ef /dev/disk/by-partuuid/${CURRENT_HASH_UUID} ]] \
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&& NEW_ROOT_NUM=1
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if ! [[ $NEW_ROOT_NUM ]]; then
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echo "Current partitions booted from not found!"
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exit 1
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fi
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## find base device and partition number
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for dev in /dev/disk/by-path/*; do
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if ! [[ $VER_PARTNO ]] && [[ /dev/disk/by-partlabel/ver${NEW_ROOT_NUM} -ef $dev ]]; then
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VER_PARTNO=${dev##*-part}
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ROOT_DEV=${dev%-part*}
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fi
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if ! [[ $ROOT_PARTNO ]] && [[ /dev/disk/by-partlabel/root${NEW_ROOT_NUM} -ef $dev ]]; then
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ROOT_PARTNO=${dev##*-part}
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ROOT_DEV=${dev%-part*}
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fi
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[[ $ROOT_PARTNO ]] && [[ $VER_PARTNO ]] && break
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done
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if ! [[ $ROOT_PARTNO ]] || ! [[ $VER_PARTNO ]] || ! [[ $ROOT_DEV ]]; then
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echo "Couldn't find partition numbers"
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exit 1
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fi
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mkdir -p /var/cache/${NAME}
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cd /var/cache/${NAME}
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curl ${BASEURL}/${NAME}-latest.txt --output ${NAME}-latest.txt
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RELEASE=$(read a b <${NAME}-latest.txt ; echo -n $b)
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ROOT_HASH=$(read a b <${NAME}-latest.txt; echo -n $a)
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ROOT_UUID=${ROOT_HASH:32:8}-${ROOT_HASH:40:4}-${ROOT_HASH:44:4}-${ROOT_HASH:48:4}-${ROOT_HASH:52:12}
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HASH_UUID=${ROOT_HASH:0:8}-${ROOT_HASH:8:4}-${ROOT_HASH:12:4}-${ROOT_HASH:16:4}-${ROOT_HASH:20:12}
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if [[ $CURRENT_ROOT_HASH == $ROOT_HASH ]] || [[ ${NAME}-${VERSION_ID} == $RELEASE ]]; then
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echo "Already up2date"
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exit 1
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fi
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curl ${BASEURL}/${RELEASE}.tgz | tar xzf -
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[[ -d ${RELEASE} ]]
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cd ${RELEASE}
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dd status=progress if=root.verity.img of=/dev/disk/by-partlabel/ver${NEW_ROOT_NUM}
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dd status=progress if=root.squashfs.img of=/dev/disk/by-partlabel/root${NEW_ROOT_NUM}
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# set the new partition uuids
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sfdisk --part-uuid ${ROOT_DEV} ${VER_PARTNO} ${HASH_UUID}
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sfdisk --part-uuid ${ROOT_DEV} ${ROOT_PARTNO} ${ROOT_UUID}
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# install to /efi
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mkdir -p /efi/EFI/${NAME}
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cp bootx64.efi /efi/EFI/${NAME}/${NEW_ROOT_NUM}.efi
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## unless proper boot entries set, just force copy to default boot loader
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cp bootx64.efi /efi/EFI/Boot/new_bootx64.efi
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mv --backup=numbered /efi/EFI/Boot/new_bootx64.efi /efi/EFI/Boot/bootx64.efi
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