gentoo-install/scripts/main.sh

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source "$GENTOO_INSTALL_REPO_DIR/scripts/protection.sh" || exit 1
################################################
# Functions
install_stage3() {
[[ $# == 0 ]] || die "Too many arguments"
prepare_installation_environment
apply_disk_configuration
download_stage3
extract_stage3
}
configure_base_system() {
einfo "Generating locales"
echo "$LOCALES" > /etc/locale.gen \
|| die "Could not write /etc/locale.gen"
locale-gen \
|| die "Could not generate locales"
if [[ $SYSTEMD == "true" ]]; then
einfo "Setting machine-id"
systemd-machine-id-setup \
|| die "Could not setup systemd machine id"
# Set hostname
einfo "Selecting hostname"
echo "$HOSTNAME" > /etc/hostname \
|| die "Could not write /etc/hostname"
# Set keymap
einfo "Selecting keymap"
echo "KEYMAP=$KEYMAP" > /etc/vconsole.conf \
|| die "Could not write /etc/vconsole.conf"
einfo "Selecting timezone"
ln -sfn "../usr/share/zoneinfo/$TIMEZONE" /etc/localtime \
|| die "Could not change /etc/localtime link"
# TODO use systemd-nspawn to start instead of chroot, then we can use these utils.
#hostnamectl set-hostname "$HOSTNAME" \
# || die "Could not set hostname"
## Set timezone
#einfo "Selecting timezone"
#timedatectl set-timezone "$TIMEZONE" \
# || die "Could not set timezone"
#einfo "Setting time to UTC"
#timedatectl set-local-rtc 0 \
# || die "Could not set local rtc to UTC"
## Set keymap
#einfo "Selecting keymap"
#localectl set-keymap "$KEYMAP" \
# || die "Could not set keymap"
## Set locale
#einfo "Selecting locale"
#localectl set-locale LANG="$LOCALE" \
# || die "Could not set locale"
else
# Set hostname
einfo "Selecting hostname"
sed -i "/hostname=/c\\hostname=\"$HOSTNAME\"" /etc/conf.d/hostname \
|| die "Could not sed replace in /etc/conf.d/hostname"
# Set timezone
einfo "Selecting timezone"
echo "$TIMEZONE" > /etc/timezone \
|| die "Could not write /etc/timezone"
try emerge -v --config sys-libs/timezone-data
# Set keymap
einfo "Selecting keymap"
sed -i "/keymap=/c\\keymap=\"$KEYMAP\"" /etc/conf.d/keymaps \
|| die "Could not sed replace in /etc/conf.d/keymaps"
# Set locale
einfo "Selecting locale"
try eselect locale set "$LOCALE"
fi
# Update environment
env_update
}
configure_portage() {
# Prepare /etc/portage for autounmask
mkdir_or_die 0755 "/etc/portage/package.use"
touch_or_die 0644 "/etc/portage/package.use/zz-autounmask"
mkdir_or_die 0755 "/etc/portage/package.keywords"
touch_or_die 0644 "/etc/portage/package.keywords/zz-autounmask"
if [[ $SELECT_MIRRORS == "true" ]]; then
einfo "Temporarily installing mirrorselect"
try emerge --verbose --oneshot app-portage/mirrorselect
einfo "Selecting fastest portage mirrors"
mirrorselect_params=("-s" "4" "-b" "10")
[[ $SELECT_MIRRORS_LARGE_FILE == "true" ]] \
&& mirrorselect_params+=("-D")
try mirrorselect "${mirrorselect_params[@]}"
einfo "Adding ~$GENTOO_ARCH to ACCEPT_KEYWORDS"
echo "ACCEPT_KEYWORDS=\"~$GENTOO_ARCH\"" >> /etc/portage/make.conf \
|| die "Could not modify /etc/portage/make.conf"
fi
}
install_sshd() {
einfo "Installing sshd"
install -m0600 -o root -g root "$GENTOO_INSTALL_REPO_DIR/contrib/sshd_config" /etc/ssh/sshd_config \
|| die "Could not install /etc/ssh/sshd_config"
enable_service sshd
groupadd -r sshusers \
|| die "Could not create group 'sshusers'"
}
generate_initramfs() {
local output="$1"
# Generate initramfs
einfo "Generating initramfs"
local modules=()
[[ $USED_RAID == "true" ]] \
&& modules+=("mdraid")
[[ $USED_LUKS == "true" ]] \
&& modules+=("crypt crypt-gpg")
[[ $USED_BTRFS == "true" ]] \
&& modules+=("btrfs")
local kver="$(readlink /usr/src/linux)"
kver="${kver#linux-}"
# Generate initramfs
try dracut \
--conf "/dev/null" \
--confdir "/dev/null" \
--kver "$kver" \
--no-compress \
--no-hostonly \
--ro-mnt \
--omit "systemd" \
--add "bash ${modules[*]}" \
--force \
"$output"
}
get_cmdline() {
echo -n "${DISK_DRACUT_CMDLINE[*]} root=UUID=$(get_blkid_uuid_for_id "$DISK_ID_ROOT")"
}
install_kernel_efi() {
try emerge --verbose sys-boot/efibootmgr
# Copy kernel to EFI
local kernel_file
kernel_file="$(find "/boot" -name "vmlinuz-*" -printf '%f\n' | sort -V | tail -n 1)" \
|| die "Could not list newest kernel file"
mkdir_or_die 0755 "/boot/efi/EFI"
cp "/boot/$kernel_file" "/boot/efi/EFI/vmlinuz.efi" \
|| die "Could not copy kernel to EFI partition"
# Generate initramfs
generate_initramfs "/boot/efi/EFI/initramfs.img"
# Create boot entry
einfo "Creating efi boot entry"
local efipartdev="$(resolve_device_by_id "$DISK_ID_EFI")"
local efipartnum="${efipartdev: -1}"
local gptdev="$(resolve_device_by_id "${DISK_ID_PART_TO_GPT_ID[$DISK_ID_EFI]}")"
try efibootmgr --verbose --create --disk "$gptdev" --part "$efipartnum" --label "gentoo" --loader '\EFI\vmlinuz.efi' --unicode 'initrd=\EFI\initramfs.img'" $(get_cmdline)"
}
generate_syslinux_cfg() {
cat <<EOF
DEFAULT gentoo
PROMPT 0
TIMEOUT 0
LABEL gentoo
LINUX ../vmlinuz-current
APPEND initrd=../initramfs.img $(get_cmdline)
EOF
}
install_kernel_bios() {
try emerge --verbose sys-boot/syslinux
# Link kernel to known name
local kernel_file
kernel_file="$(find "/boot" -name "vmlinuz-*" -printf '%f\n' | sort -V | tail -n 1)" \
|| die "Could not list newest kernel file"
cp "/boot/$kernel_file" "/boot/bios/vmlinuz-current" \
|| die "Could copy kernel to /boot/bios/vmlinuz-current"
# Generate initramfs
generate_initramfs "/boot/bios/initramfs.img"
# Install syslinux
einfo "Installing syslinux"
local biosdev="$(resolve_device_by_id "$DISK_ID_BIOS")"
mkdir_or_die 0700 "/boot/bios/syslinux"
try syslinux --directory syslinux --install "$biosdev"
# Create syslinux.cfg
generate_syslinux_cfg > /boot/bios/syslinux/syslinux.cfg \
|| die "Could save generated syslinux.cfg"
# Install syslinux MBR record
einfo "Copying syslinux MBR record"
local gptdev="$(resolve_device_by_id "${DISK_ID_PART_TO_GPT_ID[$DISK_ID_BIOS]}")"
try dd bs=440 conv=notrunc count=1 if=/usr/share/syslinux/gptmbr.bin of="$gptdev"
}
install_kernel() {
# Install vanilla kernel
einfo "Installing vanilla kernel and related tools"
try emerge --verbose sys-kernel/dracut sys-kernel/gentoo-kernel-bin
if [[ $IS_EFI == "true" ]]; then
install_kernel_efi
else
install_kernel_bios
fi
}
add_fstab_entry() {
printf '%-46s %-24s %-6s %-96s %s\n' "$1" "$2" "$3" "$4" "$5" >> /etc/fstab \
|| die "Could not append entry to fstab"
}
generate_fstab() {
einfo "Generating fstab"
install -m0644 -o root -g root "$GENTOO_INSTALL_REPO_DIR/contrib/fstab" /etc/fstab \
|| die "Could not overwrite /etc/fstab"
add_fstab_entry "UUID=$(get_blkid_uuid_for_id "$DISK_ID_ROOT")" "/" "$DISK_ID_ROOT_TYPE" "$DISK_ID_ROOT_MOUNT_OPTS" "0 1"
if [[ $IS_EFI == "true" ]]; then
add_fstab_entry "UUID=$(get_blkid_uuid_for_id "$DISK_ID_EFI")" "/boot/efi" "vfat" "defaults,noatime,fmask=0177,dmask=0077,noexec,nodev,nosuid,discard" "0 2"
else
add_fstab_entry "UUID=$(get_blkid_uuid_for_id "$DISK_ID_BIOS")" "/boot/bios" "vfat" "defaults,noatime,fmask=0177,dmask=0077,noexec,nodev,nosuid,discard" "0 2"
fi
if [[ -v "DISK_ID_SWAP" ]]; then
add_fstab_entry "UUID=$(get_blkid_uuid_for_id "$DISK_ID_SWAP")" "none" "swap" "defaults,discard" "0 0"
fi
}
install_ansible() {
einfo "Installing ansible"
try emerge --verbose app-admin/ansible
einfo "Creating ansible user"
useradd -r -d "$ANSIBLE_HOME" -s /bin/bash ansible \
|| die "Could not create user 'ansible'"
mkdir_or_die 0700 "$ANSIBLE_HOME"
mkdir_or_die 0700 "$ANSIBLE_HOME/.ssh"
if [[ -n $ANSIBLE_SSH_AUTHORIZED_KEYS ]]; then
einfo "Adding authorized keys for ansible"
touch_or_die 0600 "$ANSIBLE_HOME/.ssh/authorized_keys"
echo "$ANSIBLE_SSH_AUTHORIZED_KEYS" >> "$ANSIBLE_HOME/.ssh/authorized_keys" \
|| die "Could not add ssh key to authorized_keys"
fi
chown -R ansible: "$ANSIBLE_HOME" \
|| die "Could not change ownership of ansible home"
einfo "Adding ansible to some auxiliary groups"
usermod -a -G wheel,sshusers ansible \
|| die "Could not add ansible to auxiliary groups"
}
main_install_gentoo_in_chroot() {
[[ $# == 0 ]] || die "Too many arguments"
# Remove the root password, making the account accessible for automated
# tasks during the period of installation.
einfo "Clearing root password"
passwd -d root \
|| die "Could not change root password"
if [[ $IS_EFI == "true" ]]; then
# Mount efi partition
mount_efivars
einfo "Mounting efi partition"
mount_by_id "$DISK_ID_EFI" "/boot/efi"
else
# Mount bios partition
einfo "Mounting bios partition"
mount_by_id "$DISK_ID_BIOS" "/boot/bios"
fi
# Sync portage
einfo "Syncing portage tree"
try emerge-webrsync
# Configure basic system things like timezone, locale, ...
configure_base_system
# Prepare portage environment
configure_portage
# Install git (for git portage overlays)
einfo "Installing git"
try emerge --verbose dev-vcs/git
# Install mdadm if we used raid (needed for uuid resolving)
if [[ $USED_RAID == "true" ]]; then
einfo "Installing mdadm"
try emerge --verbose sys-fs/mdadm
fi
# Install cryptsetup if we used luks
if [[ $USED_LUKS == "true" ]]; then
einfo "Installing cryptsetup"
try emerge --verbose sys-fs/cryptsetup
fi
# Install btrfs-progs if we used btrfs
if [[ $USED_BTRFS == "true" ]]; then
einfo "Installing btrfs-progs"
try emerge --verbose sys-fs/btrfs-progs
fi
# Install kernel and initramfs
install_kernel
# Generate a valid fstab file
generate_fstab
# Install gentoolkit
einfo "Installing gentoolkit"
try emerge --verbose app-portage/gentoolkit
# Install and enable sshd
if [[ $INSTALL_SSHD == "true" ]]; then
install_sshd
fi
if [[ $SYSTEMD != "true" ]]; then
# Install and enable dhcpcd
einfo "Installing dhcpcd"
try emerge --verbose net-misc/dhcpcd
enable_service dhcpcd
fi
if [[ $SYSTEMD == "true" ]]; then
# Enable systemd networking and dhcp
enable_service systemd-networkd
enable_service systemd-resolved
echo -en "[Match]\nName=en*\n\n[Network]\nDHCP=yes" > /etc/systemd/network/20-wired-dhcp.network \
|| die "Could not write dhcp network config to '/etc/systemd/network/20-wired-dhcp.network'"
chown root:systemd-network /etc/systemd/network/20-wired-dhcp.network \
|| die "Could not change owner of '/etc/systemd/network/20-wired-dhcp.network'"
chmod 640 /etc/systemd/network/20-wired-dhcp.network \
|| die "Could not change owner of '/etc/systemd/network/20-wired-dhcp.network'"
fi
# Install ansible
if [[ $INSTALL_ANSIBLE == "true" ]]; then
install_ansible
fi
# Install additional packages, if any.
if [[ ${#ADDITIONAL_PACKAGES[@]} -gt 0 ]]; then
einfo "Installing additional packages"
# shellcheck disable=SC2086
try emerge --verbose --autounmask-continue=y -- "${ADDITIONAL_PACKAGES[@]}"
fi
if ask "Do you want to assign a root password now?"; then
try passwd root
einfo "Root password assigned"
else
try passwd -d root
ewarn "Root password cleared, set one as soon as possible!"
fi
einfo "Gentoo installation complete."
einfo "To chroot into the new system, simply execute the provided 'chroot' wrapper."
einfo "Otherwise, you may now reboot your system."
}
main_install() {
[[ $# == 0 ]] || die "Too many arguments"
gentoo_umount
install_stage3
[[ $IS_EFI == "true" ]] \
&& mount_efivars
gentoo_chroot "$GENTOO_INSTALL_REPO_BIND/scripts/main.sh" __install_gentoo_in_chroot
gentoo_umount
}
main_chroot() {
gentoo_chroot "$@"
gentoo_umount
}
main_umount() {
gentoo_umount
}