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#!/bin/sh
set -e
BASE=/root/archi486/iso
ROOTFS="$BASE/airootfs"
ROOTMNT="$BASE/mnt"
umount "$ROOTMNT" || true
rm -rf "$ROOTFS"
rm -f "$BASE/pacman-i486.conf"
rm -f "$BASE/mirrorlist32"
if test ! -d "$ROOTMNT"; then
mkdir "$ROOTMNT"
fi
if test ! -d "$ROOTFS"; then
mkdir "$ROOTFS"
fi
echo "Fetch and patch mirrorlist for Archlinux32.."
if test ! -f "$BASE/mirrorlist32"; then
wget -O "$BASE/mirrorlist32" "https://www.archlinux32.org/mirrorlist/?country=all&protocol=http&protocol=https&ip_version=4&ip_version=6"
sed -i '/https.*mirror.archlinux32.org/s/#Server/Server/' "$BASE/mirrorlist32"
fi
echo "Patch host pacman.conf for installation of i486 chroot.."
cp /etc/pacman.conf "$BASE/pacman-i486.conf"
sed -i 's/^Architecture.*=.*/Architecture = i486/' "$BASE/pacman-i486.conf"
sed -i "s|/etc/pacman.d/mirrorlist|$BASE/mirrorlist32|" "$BASE/pacman-i486.conf"
sed -i 's|.*ParallelDownloads.*|ParallelDownloads = 1|' "$BASE/pacman-i486.conf"
pacstrap -C "$BASE/pacman-i486.conf" -G -M "$ROOTFS" base linux
echo "Cleaning up root filesystem to fit to an ISO.."
rm -rf "$ROOTFS/var/cache/pacman/pkg/"*
rm -rf "$ROOTFS/usr/include/"
rm -rf "$ROOTFS/usr/lib/"*.a
rm -rf "$ROOTFS/usr/share/man/"
rm -rf "$ROOTFS/usr/share/info/"
rm -rf "$ROOTFS/usr/share/locale/"
rm -rf "$ROOTFS/usr/share/i18/locales/"
echo "Patching pacman.conf and mirrorlist on the ISO.."
sed -i 's/^Architecture.*=.*/Architecture = i486/' "$ROOTFS/etc/pacman.conf"
sed -i 's/^#\(Server.*=.*https:\/\/.*mirror\.archlinux32.org.*\)/\1/' "$ROOTFS/etc/pacman.d/mirrorlist"
sed -i 's|.*ParallelDownloads.*|ParallelDownloads = 1|' "$ROOTFS/etc/pacman.conf"
# /var/tmp should be writeable
echo "/tmp /var/tmp none bind 0 0" >> "$ROOTFS/etc/fstab"
mount --bind "$ROOTFS" "$ROOTMNT"
echo "Preparing keyring inside chroot.."
linux32 arch-chroot "$ROOTMNT" /bin/bash -c 'pacman-key --init'
linux32 arch-chroot "$ROOTMNT" /bin/bash -c 'pacman-key --populate archlinux'
linux32 arch-chroot "$ROOTMNT" /bin/bash -c 'pacman-key --populate archlinux32'
linux32 arch-chroot "$ROOTMNT" /bin/bash -c 'pacman -Syyu --noconfirm syslinux dhclient dhcpcd pciutils nano vi arch-install-scripts openssh'
echo "Install configuration.."
for i in 1 2 3 4; do
mkdir -p "$ROOTFS"/etc/systemd/system/getty@tty$i.service.d
cp $BASE/autologin.conf "$ROOTFS"/etc/systemd/system/getty@tty$i.service.d/.
done
cp $BASE/resolv.conf "$ROOTFS"/etc/resolv.conf
cp $BASE/sshd_config "$ROOTFS"/etc/ssh/sshd_config
linux32 arch-chroot "$ROOTMNT" /bin/bash -c 'ssh-keygen -b 2048 -t rsa -f etc/ssh/ssh_host_rsa_key -N ""'
linux32 arch-chroot "$ROOTMNT" /bin/bash -c 'ssh-keygen -b 1024 -t dsa -f etc/ssh/ssh_host_dsa_key -N ""'
linux32 arch-chroot "$ROOTMNT" /bin/bash -c 'ssh-keygen -b 521 -t ecdsa -f etc/ssh/ssh_host_ecdsa_key -N ""'
linux32 arch-chroot "$ROOTMNT" /bin/bash -c 'ssh-keygen -b 2048 -t ed25519 -f etc/ssh/ssh_host_ed25519_key -N ""'
chmod 0400 "$ROOTFS"/etc/ssh/ssh_host_*_key
cp $BASE/motd "$ROOTFS"/etc/motd
linux32 arch-chroot "$ROOTMNT" /bin/bash -c 'echo "root:arch" | /usr/bin/chpasswd'
cp $BASE/system-login "$ROOTMNT"/etc/pam.d/system-login
cp $BASE/system-auth "$ROOTMNT"/etc/pam.d/system-auth
echo "Installining syslinux (isolinux).."
if test ! -d "$ROOTFS/isolinux"; then
mkdir "$ROOTFS/isolinux"
fi
for file in isolinux.bin ldlinux.c32; do
cp "$ROOTFS"/usr/lib/syslinux/bios/"$file" "$ROOTFS/isolinux"
done
cp "$BASE"/isolinux-i486.cfg "$ROOTFS/isolinux/isolinux.cfg"
echo "Creating ramdisk for ISO.."
cp "$BASE"/mkinitcpio-i486.conf "$ROOTFS/etc/mkinitcpio.conf"
linux32 arch-chroot "$ROOTMNT" /bin/bash -c 'mkinitcpio -P'
umount "$ROOTMNT"
echo "Creating ISO.."
TODAY=`date +'%Y.%m.%d'`
cd "$ROOTFS"
iso_label="ARCH_$(date +%Y%m)"
iso_publisher="Arch Linux <http://www.archlinux32.org>"
iso_application="ArchLinux32 i486 Live/Rescue CD"
mkisofs -o "$BASE/archlinux32-$TODAY-i486.iso" \
-b "isolinux/isolinux.bin" \
-c "isolinux/boot.cat" \
-volid "${iso_label}" \
-appid "${iso_application}" \
-publisher "${iso_publisher}" \
-preparer "prepared by mkarchiso" \
-no-emul-boot -boot-load-size 4 -boot-info-table \
-R -full-iso9660-filenames -iso-level 3 \
"."
cd ..
echo "Done."
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