gentoo-install/scripts/main.sh

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#!/bin/bash
################################################
# Initialize script environment
# Find the directory this script is stored in. (from: http://stackoverflow.com/questions/59895)
get_source_dir() {
local source="${BASH_SOURCE[0]}"
while [[ -h "${source}" ]]
do
local tmp="$(cd -P "$(dirname "${source}")" && pwd)"
source="$(readlink "${source}")"
[[ "${source}" != /* ]] && source="${tmp}/${source}"
done
echo -n "$(realpath "$(dirname "${source}")")"
}
export GENTOO_BOOTSTRAP_DIR_ORIGINAL="$(dirname "$(get_source_dir)")"
export GENTOO_BOOTSTRAP_DIR="$GENTOO_BOOTSTRAP_DIR_ORIGINAL"
export GENTOO_BOOTSTRAP_SCRIPT_ACTIVE=true
export GENTOO_BOOTSTRAP_SCRIPT_PID=$$
umask 0077
source "$GENTOO_BOOTSTRAP_DIR/scripts/utils.sh"
source "$GENTOO_BOOTSTRAP_DIR/scripts/config.sh"
source "$GENTOO_BOOTSTRAP_DIR/scripts/functions.sh"
[[ $I_HAVE_READ_AND_EDITED_THE_CONFIG_PROPERLY == true ]] \
|| die "You have not properly read the config. Set I_HAVE_READ_AND_EDITED_THE_CONFIG_PROPERLY=true to continue."
mkdir_or_die 0755 "$TMP_DIR"
[[ $EUID == 0 ]] \
|| die "Must be root"
################################################
# Functions
install_stage3() {
[[ $# == 0 ]] || die "Too many arguments"
prepare_installation_environment
partition_device
format_partitions
download_stage3
extract_stage3
}
main_install_gentoo_in_chroot() {
[[ $# == 0 ]] || die "Too many arguments"
# Lock the root password, making the account unaccessible for the
# period of installation, except by chrooting
einfo "Locking root account"
passwd -l root \
|| die "Could not change root password"
# Mount efi partition
mount_efivars
einfo "Mounting efi partition"
mount_by_partuuid "$PARTITION_UUID_EFI" "/boot/efi"
# Sync portage
einfo "Syncing portage tree"
try emerge-webrsync
# 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=\"$KEYMAP\"" /etc/conf.d/keymaps \
|| die "Could not sed replace in /etc/conf.d/keymaps"
# Set locale
einfo "Selecting locale"
echo "$LOCALES" > /etc/locale.gen \
|| die "Could not write /etc/locale.gen"
locale-gen \
|| die "Could not generate locales"
try eselect locale set "$LOCALE"
# Update environment
env_update
# Prepare /etc/portage for autounmask
mkdir_or_die 0755 "/etc/portage/package.use"
touch_or_die 0644 "/etc/portage/package.use/zz-autounmask"
mkdir_or_die 0755 "/etc/portage/package.keywords"
touch_or_die 0644 "/etc/portage/package.keywords/zz-autounmask"
einfo "Temporarily installing mirrorselect"
try emerge --verbose --oneshot app-portage/mirrorselect
einfo "Selecting fastest portage mirrors"
try mirrorselect -s 4 -b 10 -D
einfo "Adding ~$GENTOO_ARCH to ACCEPT_KEYWORDS"
echo "ACCEPT_KEYWORDS=\"~$GENTOO_ARCH\"" >> /etc/portage/make.conf \
|| die "Could not modify /etc/portage/make.conf"
# Install git (for git portage overlays)
einfo "Installing git"
try emerge --verbose dev-vcs/git
# Install vanilla kernel and efibootmgr, to be able to boot the system.
einfo "Installing binary vanilla kernel"
try emerge --verbose sys-kernel/vanilla-kernel-bin sys-boot/efibootmgr
# Copy kernel to EFI
local kernel_version
kernel_version="$(find "/boot" -name "vmlinuz-*" -printf '%f\n' | sort -V | tail -1)" \
|| die "Could not list newest kernel file"
kernel_version="${kernel_version#vmlinuz-}" \
|| die "Could not find kernel version"
mkdir_or_die 0755 "/boot/efi/EFI"
cp "/boot/initramfs-$kernel_version"* "/boot/efi/EFI/initramfs.img" \
|| die "Could not copy initramfs to EFI partition"
cp "/boot/vmlinuz-$kernel_version"* "/boot/efi/EFI/vmlinuz.efi" \
|| die "Could not copy kernel to EFI partition"
# Create boot entry
einfo "Creating efi boot entry"
local linuxdev
linuxdev="$(get_device_by_partuuid "$PARTITION_UUID_LINUX")" \
|| die "Could not resolve partition UUID '$PARTITION_UUID_LINUX'"
local efidev
efidev="$(get_device_by_partuuid "$PARTITION_UUID_EFI")" \
|| die "Could not resolve partition UUID '$PARTITION_UUID_EFI'"
local efipartnum="${efidev: -1}"
try efibootmgr --verbose --create --disk "$PARTITION_DEVICE" --part "$efipartnum" --label "gentoo" --loader '\EFI\vmlinuz.efi' --unicode "root=$linuxdev initrd=\\EFI\\initramfs.img"
# Generate a valid fstab file
einfo "Generating fstab"
install -m0644 -o root -g root "$GENTOO_BOOTSTRAP_DIR/configs/fstab" /etc/fstab \
|| die "Could not overwrite /etc/fstab"
echo "PARTUUID=$PARTITION_UUID_LINUX / ext4 defaults,noatime,errors=remount-ro,discard 0 1" >> /etc/fstab \
|| die "Could not append entry to fstab"
echo "PARTUUID=$PARTITION_UUID_EFI /boot/efi vfat defaults,noatime,fmask=0022,dmask=0022,noexec,nodev,nosuid,discard 0 2" >> /etc/fstab \
|| die "Could not append entry to fstab"
if [[ "$ENABLE_SWAP" == true ]]; then
echo "PARTUUID=$PARTITION_UUID_SWAP none swap defaults,discard 0 0" >> /etc/fstab \
|| die "Could not append entry to fstab"
fi
# Install and enable sshd
if [[ "$INSTALL_SSHD" == true ]]; then
einfo "Installing sshd"
install -m0600 -o root -g root "$GENTOO_BOOTSTRAP_DIR/configs/sshd_config" /etc/ssh/sshd_config \
|| die "Could not install /etc/ssh/sshd_config"
rc-update add sshd default \
|| die "Could not add sshd to default services"
fi
# Install and enable dhcpcd
einfo "Installing dhcpcd"
try emerge --verbose net-misc/dhcpcd
rc-update add dhcpcd default \
|| die "Could not add dhcpcd to default services"
# Install ansible
if [[ "$INSTALL_ANSIBLE" == true ]]; then
einfo "Installing ansible"
try emerge --verbose app-admin/ansible
einfo "Creating ansible user"
useradd -r -d "$ANSIBLE_HOME" -s /bin/bash 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: "$ANSIBLE_HOME" \
|| die "Could not change ownership of ansible home"
einfo "Allowing ansible for ssh"
echo "AllowUsers ansible" >> "/etc/ssh/sshd_config" \
|| die "Could not append to /etc/ssh/sshd_config"
fi
# Install additional packages, if any.
if [[ -n "$ADDITIONAL_PACKAGES" ]]; then
einfo "Installing additional packages"
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() {
[[ $# == 0 ]] || die "Too many arguments"
gentoo_umount
install_stage3
mount_efivars
gentoo_chroot "$GENTOO_BOOTSTRAP_BIND/scripts/main.sh" install_gentoo_in_chroot
gentoo_umount
}
main_chroot() {
gentoo_chroot "$@"
}
main_umount() {
gentoo_umount
}
################################################
# Main dispatch
# Instantly kill when pressing ctrl-c
trap 'kill "$GENTOO_BOOTSTRAP_SCRIPT_PID"' INT
SCRIPT_ALIAS="$(basename "$0")"
if [[ "$SCRIPT_ALIAS" == "main.sh" ]]; then
SCRIPT_ALIAS="$1"
shift
fi
case "$SCRIPT_ALIAS" in
"chroot") main_chroot "$@" ;;
"install") main_install "$@" ;;
"install_gentoo_in_chroot") main_install_gentoo_in_chroot "$@" ;;
"umount") main_umount "$@" ;;
*) die "Invalid alias '$SCRIPT_ALIAS' was used to execute this script" ;;
esac