askiiart-blendos/akshara
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Implement immutability

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This commit is contained in:
Rudra Saraswat 2023-05-07 11:46:13 +05:30
parent 038f5d2abf
commit 3ead61252c
2 changed files with 32 additions and 11 deletions
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1
akshara
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@ -209,6 +209,7 @@ description = f'''
This command is not meant to be used by regular users.
{colors.bold}{colors.fg.cyan}available commands{colors.reset}:
{colors.bold}help{colors.reset} Show this help message and exit.
{colors.bold}help{colors.reset} Show this help message and exit.
{colors.bold}version{colors.reset} Show version information and exit.

42
akshara.hook
View file

@ -2,44 +2,64 @@
run_latehook() {
echo
# 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
# Same for /var/lib.
mv /new_root/var/lib /new_root/.old.var.lib
mv /new_root/mnt/iso-update/squashfs-root/var/lib /new_root/var
# Move to /etc stage.
rm -f /new_root/mnt/iso-update/.ready-for-update
touch /new_root/mnt/iso-update/.etc-stage
fi
# 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 || :
# Create new /etc.
cp -a /new_root/.old.etc /new_root/etc
# Only copy non-existent files.
cp -a -n /new_root/mnt/iso-update/squashfs-root/etc/* /new_root/etc
# Update pacman config.
# 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
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
# Successful update.
rm -f /new_root/mnt/iso-update/.etc-stage
touch /new_root/mnt/iso-update/.successful-update
fi
# Create overlay directories
rm -rf /new_root/.blend-overlays /new_root/.blendrw
mkdir -p /new_root/.blend-overlays/{usr,varlib,etcpacman}
for i in usr varlibpacman; do
rm -rf /new_root/.blend-overlays/$i
mkdir -p /new_root/.blend-overlays/$i
mkdir -p /new_root/.blend-overlays/$i.workdir
done
mount -t overlay overlay -o lowerdir=/new_root/usr:/new_root/.blend-overlays/usr /new_root/usr
mount -t overlay overlay -o lowerdir=/new_root/var/lib/pacman:/new_root/.blend-overlays/varlibpacman /new_root/var/lib/pacman
mkdir -p /new_root/.blendrw
mount "$(findmnt /new_root)" /new_root/.blendrw
mount -t overlay overlay -o lowerdir=/new_root/usr,upperdir=/new_root/.blend-overlays/usr,workdir=/new_root/.blend-overlays/usr.workdir
/new_root/.blendrw/usr
mount -t overlay overlay -o lowerdir=/new_root/var/lib/pacman,upperdir=/new_root/.blend-overlays/varlibpacman,workdir=/new_root/.blend-overlays/varlibpacman.workdir
/new_root/.blendrw/var/lib/pacman
}