akshara/akshara.hook

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#!/bin/bash
run_latehook() {
echo
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touch /new_root/.custom_pkg_list
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# Remove /new_root/mnt/iso-update/.successful-update if exists
rm -f /new_root/mnt/iso-update/.successful-update
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# Detect if update downloaded.
if [[ -f /new_root/mnt/iso-update/.ready-for-update ]]; then
# Available, rename old /usr and move new /usr to /.
mv /new_root/usr /new_root/.old.usr
mv /new_root/mnt/iso-update/squashfs-root/usr /new_root/usr
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# Copy package list
mv /new_root/mnt/iso-update/squashfs-root/.custom_pkg_list /new_root
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# Update /usr/lib/modules for current kernel version.
for kversion in /new_root/.old.usr/lib/modules/*; do
if [[ ! -d /new_root/usr/lib/modules/"$(basename "$kversion")" ]]; then
mv "$kversion" /new_root/usr/lib/modules/"$(basename "$kversion")"
fi
done
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# Same for /var/lib/pacman.
mv /new_root/var/lib/pacman /new_root/.old.var.lib.pacman
mv /new_root/mnt/iso-update/squashfs-root/var/lib/pacman /new_root/var/lib
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# Move to /etc stage.
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rm -f /new_root/mnt/iso-update/.ready-for-update
touch /new_root/mnt/iso-update/.etc-stage
fi
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# Detect if /etc stage is active.
if [[ -f /new_root/mnt/iso-update/.etc-stage ]]; then
# Rename existing /etc.
mv /new_root/etc /new_root/.old.etc &>/dev/null || :
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# Create new /etc.
cp -a /new_root/.old.etc /new_root/etc
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# Only copy non-existent files.
cp -a -n /new_root/mnt/iso-update/squashfs-root/etc/* /new_root/etc
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# Update pacman config, and other system files that aren't
# supposed to be edited.
cp /new_root/mnt/iso-update/squashfs-root/etc/pacman.conf /new_root/etc
rm -rf /new_root/etc/pacman.d
cp -r /new_root/mnt/iso-update/squashfs-root/etc/pacman.d /new_root/etc
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cp /new_root/mnt/iso-update/squashfs-root/etc/blend_release /new_root/etc
cp /new_root/mnt/iso-update/squashfs-root/etc/os-release /new_root/etc
cp /new_root/mnt/iso-update/squashfs-root/etc/lsb-release /new_root/etc
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# Replace kernel and microcode images.
mv /new_root/mnt/iso-update/iso/boot/initramfs-linux-zen.img /new_root/boot/initramfs-linux-zen.img
if [[ -f /boot/amd-ucode.img ]]; then
mv /new_root/mnt/iso-update/iso/boot/amd-ucode.img /new_root/boot/amd-ucode.img
fi
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if [[ -f /boot/intel-ucode.img ]]; then
mv /new_root/mnt/iso-update/iso/boot/intel-ucode.img /new_root/boot/intel-ucode.img
fi
# Successful update.
rm -f /new_root/mnt/iso-update/.etc-stage
touch /new_root/mnt/iso-update/.successful-update
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fi
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# Handle overlays.
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if [[ -f '/new_root/.blend-overlays/future-usr/.okay' ]] && [[ -f '/new_root/.blend-overlays/future-varlibpacman/.okay' ]]; then
for i in usr varlibpacman; do
rm -rf /new_root/.blend-overlays/$i
mv /new_root/.blend-overlays/future-$i /new_root/.blend-overlays/$i
done
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else
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rm -rf /new_root/.blend-overlays/usr.workdir /new_root/.blend-overlays/varlibpacman.workdir
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fi
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for i in usr varlibpacman; do
mkdir -p /new_root/.blend-overlays/$i
mkdir -p /new_root/.blend-overlays/$i.workdir
done
mount -t overlay overlay -o index=off -o metacopy=off -o ro,lowerdir=/new_root/usr,upperdir=/new_root/.blend-overlays/usr,workdir=/new_root/.blend-overlays/usr.workdir /new_root/usr
mount -t overlay overlay -o index=off -o metacopy=off -o ro,lowerdir=/new_root/var/lib/pacman,upperdir=/new_root/.blend-overlays/varlibpacman,workdir=/new_root/.blend-overlays/varlibpacman.workdir /new_root/var/lib/pacman
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}