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[main] / make-exec.sh 

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#!/bin/bash
set -e
BSN=armlfs
BS=/$BSN
if [ -d $BS ]; then
	echo "Will delete $BS, enter to continue"
	read dummy
	# Shh, just in case
	umount $BS/dev 2>/dev/null || true
	umount $BS/proc 2>/dev/null || true
	umount $BS/sys 2>/dev/null || true
	umount $BS/var/cache/pacman/pkg 2>/dev/null || true
	umount $BS 2>/dev/null || true
	rm -r $BS
fi

mkdir -p $BS

# To allow pacman-in-chroot to believe that / is a mount point
mount --bind $BS $BS


mkdir -p $BS/etc/pki/tls/certs
cp /etc/pki/tls/certs/ca-bundle.crt $BS/etc/pki/tls/certs/

mkdir -p $BS/var/lib/pacman
pacman -Sy -b $BS/var/lib/pacman -r $BS

cp buildexec-pkg.txt $BS/pkglist.txt
pacman -S --noconfirm  --noscriptlet -b $BS/var/lib/pacman -r $BS minimal

# Pacman/makepkg configuration and cd into target

# Yes, this is cyclical (as in, this script is run in the build-exec, so...)
cp /etc/pacman.conf $BS/etc/
cp exec-initial.sh $BS/initial.sh
cd $BS
cp /etc/makepkg.conf etc/

# debuginfod service (self-referentially, yes)
mkdir -p etc/sysconfig
mkdir -p etc/systemd/system

cp /etc/systemd/system/debuginfod.service etc/systemd/system/
cp /etc/sysconfig/debuginfod etc/sysconfig/

# pam.d/su (allow passwordless su, self-referentially)
cp /etc/pam.d/su etc/pam.d/

run_in_chroot() {
mount -t proc proc proc
mount -t sysfs sys sys
mount --bind /dev dev
mkdir -p var/cache/pacman/pkg
mkdir -p /tmp/ds{cache,work}
cp /etc/resolv.conf etc/
mount -t overlay -o lowerdir=/sources/pkg/armv7h/base:/sources/pkg/armv7h/core,upperdir=/tmp/dscache,workdir=/tmp/dswork overlay var/cache/pacman/pkg
chmod +x ./$1
chroot . ./$1
umount proc sys dev var/cache/pacman/pkg
rm ./$1
rm ./pkglist.txt
rm etc/resolv.conf
return 0
}
run_in_chroot initial.sh

# After-package-install (re)configuration

#sudo
sed -i 's/^# %wheel ALL=(ALL:ALL) NOPASSWD: ALL/%wheel ALL=(ALL:ALL) NOPASSWD: ALL/' etc/sudoers

# sshd (self-referentially)
cp /etc/ssh/sshd_config etc/ssh

cd -
umount $BS

rm -f $BS.tar.zst
echo "Tarballing up the system..."
cp armlfs.sh /
cp armlfs-launch.service /
time tar --xattrs --acls -C / --zstd -cf $BS.tar.zst armlfs armlfs.sh armlfs-launch.service
rm /armlfs.sh /armlfs-launch.service
echo Done.
echo "Press enter to move /$BS.tar.zst into /mnt/nfs/dist (Ctrl-C to abort)"
read dummy
mv /armlfs.tar.zst /mnt/nfs/dist/armlfs-build-exec.tar.zst