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A script to bootstrap Gentoo on a Chromebook
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| #!/bin/bash | |
| set -e | |
| if [ "${UID}" = "0" ]; then | |
| echo "Error: ${0} must not be run as root."; | |
| exit 3; | |
| fi | |
| TMPDIR="$(mktemp -d)" | |
| UNAME_M="$(uname -m)" | |
| MIRROR="${MIRROR:-http://distfiles.gentoo.org/releases}" | |
| INSTALL_DIR="${INSTALL_DIR:-/usr/local}" | |
| PREFIX="${PREFIX:-${INSTALL_DIR}/gentoo}" | |
| EPREFIX="${EPREFIX:-${INSTALL_DIR}/prefix}" | |
| if [ "${UNAME_M}" = "x86_64" ] || [ "${UNAME_M}" = "aarch64" ]; then | |
| read -p "Do you want to install a 32-bit Prefix to run old applications? [Y/n] "; | |
| case "${REPLY}" in | |
| [nN]* ) | |
| echo "OK, that's fine. Let's continue."; | |
| ;; | |
| [yY]* ) | |
| case "${UNAME_M}" in | |
| x86_64) | |
| UNAME_M=i686; | |
| ;; | |
| aarch64) | |
| UNAME_M=armv7l; | |
| ;; | |
| esac | |
| PREFIX="${PREFIX}32"; | |
| EPREFIX="${EPREFIX}32"; | |
| echo "Got it. Your 32-bit Prefix will be installed in ${EPREFIX}."; | |
| ;; | |
| *) | |
| echo "I'm sorry, I must've made a mistake somewhere. Did you say something other than yes or no?" | |
| exit 1;; | |
| esac | |
| fi | |
| GITWEB_SCRIPTS="${GITWEB_SCRIPTS:-https://gitweb.gentoo.org/repo/proj/prefix.git/plain/scripts}" | |
| case "${UNAME_M}" in | |
| x86_64) | |
| GENTOO_ARCH=amd64; | |
| BITS=64; | |
| ARCH="${GENTOO_ARCH}"; | |
| ;; | |
| i686) | |
| GENTOO_ARCH=x86; | |
| BITS=32; | |
| ARCH="${UNAME_M}"; | |
| ;; | |
| armv7l) | |
| GENTOO_ARCH=arm; | |
| BITS=32; | |
| ARCH=armv7a_hardfp; | |
| ;; | |
| aarch64) | |
| GENTOO_ARCH=arm64; | |
| BITS=64; | |
| ARCH="${GENTOO_ARCH}"; | |
| MIRROR="http://distfiles.gentoo.org/experimental"; | |
| DIST_URL="${MIRROR}/${GENTOO_ARCH}"; | |
| STAGE3_URL="${DIST_URL}/old/stage3-${ARCH}-20190115.tar.bz2"; | |
| ;; | |
| *) | |
| echo "Bootstrapping Gentoo Prefix on your Chromebook is not supported."; | |
| exit 1;; | |
| esac | |
| if [ "${UNAME_M}" != "aarch64" ]; then | |
| DIST_URL="${MIRROR}/${GENTOO_ARCH}/autobuilds" | |
| STAGE3_URL="${DIST_URL}/$(curl -Ls ${DIST_URL}/latest-stage3-${ARCH}.txt | sed '/^#/d' | cut -d' ' -f1)" | |
| fi | |
| STAGE3="${STAGE3_URL##*/}" | |
| OUTPUT="${TMPDIR}/${STAGE3}" | |
| echo "Downloading stage 3..." | |
| curl --progress-bar --output "${OUTPUT}" "${STAGE3_URL}" | |
| echo "Done. Unpacking stage 3..." | |
| echo -e "Warning: All data in ${PREFIX} and ${EPREFIX} will be lost. To stop this, please press ^C in the next 15 seconds.\a" | |
| sleep 15 | |
| echo -e "\aContinuing..." | |
| sudo umount -Rl "${PREFIX}/proc" 2>/dev/null || : | |
| sudo umount -Rl "${PREFIX}/dev" 2>/dev/null || : | |
| sudo umount -Rl "${PREFIX}/sys" 2>/dev/null || : | |
| sudo rm -rf "${PREFIX}" "${EPREFIX}" | |
| sudo mkdir -p "${PREFIX}/${EPREFIX}" | |
| sudo chown chronos:chronos "${PREFIX}/${EPREFIX}" | |
| sudo tar xphf "${OUTPUT}" --xattrs-include='*.*' --numeric-owner -C "${PREFIX}" | |
| rm -rf "${TMPDIR}" | |
| echo "Downloading bootstrap script..." | |
| sudo curl --progress-bar --output "${PREFIX}/bootstrap-prefix.sh" -L "${GITWEB_SCRIPTS}/bootstrap-prefix.sh" | |
| sudo chmod a+x "${PREFIX}/bootstrap-prefix.sh" | |
| echo "Creating wrapper script..." | |
| echo "#! /bin/sh | |
| set -e | |
| useradd -u 1000 -s /bin/bash chronos | |
| export CHOST=\"\$(gcc -dumpmachine | sed -i 's,armv7a-unknown-linux-gnueabihf,armv7l-pc-linux-gnu,g')\" | |
| emerge-webrsync | |
| ACCEPT_KEYWORDS=\"~${GENTOO_ARCH}\" emerge -1 glibc | |
| setarch linux${BITS} su chronos -c \"/bootstrap-prefix.sh \${1} \${2}\" | |
| " | sudo tee "${PREFIX}/bootstrap-wrapper.sh" >/dev/null | |
| sudo chmod a+x "${PREFIX}/bootstrap-wrapper.sh" | |
| echo "Running wrapper script..." | |
| sudo mount -t proc procfs "${PREFIX}/proc" | |
| sudo mount --rbind /dev "${PREFIX}/dev" | |
| sudo mount --make-rslave "${PREFIX}/dev" | |
| sudo mount --rbind /sys "${PREFIX}/sys" | |
| sudo mount --make-rslave "${PREFIX}/sys" | |
| sudo cp -L /etc/resolv.conf "${PREFIX}/etc/" | |
| sudo chroot "${PREFIX}" /bootstrap-wrapper.sh "${EPREFIX}" "noninteractive" | |
| sudo mv "${PREFIX}/${EPREFIX}" "${INSTALL_DIR}/" | |
| sudo umount -Rl "${PREFIX}/proc" || : | |
| sudo umount -Rl "${PREFIX}/dev" || : | |
| sudo umount -Rl "${PREFIX}/sys" || : | |
| sudo rm -rf "${PREFIX}" | |
| echo -e "\nGentoo Prefix has been installed; to run it, use this command: ${EPREFIX}/startprefix" |
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