Commit 3d05bef2 authored by Gerardo Exequiel Pozzi's avatar Gerardo Exequiel Pozzi
Browse files

[archiso] Implement own chroot functions in mkarchiso



* Remove devtools dependency.
* Better control over what files are touched inside chroot (root-image).
  Now: NONE :)
* Two new commands:
  + init: To install {base} group and other needed packages (syslinux for now)
  + run: If we want to run some command inside chroot
         (mkinitcpio, locale-gen, useradd, etc etc...)
* Renamed command: "created" to "install", says much better what does.
Signed-off-by: default avatarGerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>
parent ab5d67fe
......@@ -5,6 +5,7 @@ set -e -u
app_name=${0##*/}
arch=$(uname -m)
pkg_list=""
run_cmd=""
quiet="y"
pacman_conf="/etc/pacman.conf"
export iso_label="ARCH_$(date +%Y%m)"
......@@ -44,6 +45,44 @@ _show_space_usage () {
_msg_info "Total: ${_total} MiB (100%) | Used: ${_used} MiB (${_pct_u}) | Avail: ${_avail} MiB ($((100 - ${_pct_u%\%}))%)"
}
_chroot_mount () {
mount -t devtmpfs dev "${work_dir}/root-image/dev"
mount -t devpts devpts "${work_dir}/root-image/dev/pts"
mount -t tmpfs devshm "${work_dir}/root-image/dev/shm"
mount -t proc proc "${work_dir}/root-image/proc"
mount -t tmpfs run "${work_dir}/root-image/run"
mount -t sysfs sys "${work_dir}/root-image/sys"
mount -t tmpfs tmp "${work_dir}/root-image/tmp"
trap '_chroot_umount' EXIT HUP INT TERM
}
_chroot_umount () {
umount "${work_dir}/root-image/tmp"
umount "${work_dir}/root-image/sys"
umount "${work_dir}/root-image/run"
umount "${work_dir}/root-image/proc"
umount "${work_dir}/root-image/dev/shm"
umount "${work_dir}/root-image/dev/pts"
umount "${work_dir}/root-image/dev"
trap - EXIT HUP INT TERM
}
_chroot_init() {
if [[ ! -d ${work_dir}/root-image/var/cache/pacman ]]; then
mkdir -p ${work_dir}/root-image/{dev,proc,run,sys,tmp,var/lib/pacman}
_pacman "base"
_pacman "syslinux"
fi
}
_chroot_run() {
_chroot_mount
eval chroot ${work_dir}/root-image "${run_cmd}"
_chroot_umount
}
# Mount a filesystem (trap signals in case of error for unmounting it
# $1: source image
# $2: mount-point
......@@ -99,6 +138,7 @@ _usage ()
echo "usage ${app_name} [options] command <command options>"
echo " general options:"
echo " -p PACKAGE(S) Package(s) to install, can be used multiple times"
echo " -r <command> Run <command> inside root-image"
echo " -C <file> Config file for pacman. Default ${pacman_conf}"
echo " -L <label> Set a label for the disk"
echo " -P <publisher> Set a publisher for the disk"
......@@ -113,9 +153,12 @@ _usage ()
echo " -v Enable verbose output"
echo " -h This message"
echo " commands:"
echo " create"
echo " create a base directory layout to work with"
echo " includes all specified packages"
echo " init"
echo " Make base layout and install base group"
echo " install"
echo " Install all specified packages (-p)"
echo " run"
echo " run command specified by -r"
echo " prepare"
echo " build all images"
echo " checksum"
......@@ -126,7 +169,7 @@ _usage ()
}
# Shows configuration according to command mode.
# $1: create | prepare | iso
# $1: init | install | run | prepare | checksum | iso
_show_config () {
local _mode="$1"
echo
......@@ -136,10 +179,16 @@ _show_config () {
_msg_info " Working directory: ${work_dir}"
_msg_info " Installation directory: ${install_dir}"
case "${_mode}" in
create)
init)
_msg_info " Pacman config file: ${pacman_conf}"
;;
install)
_msg_info " Pacman config file: ${pacman_conf}"
_msg_info " Packages: ${pkg_list}"
;;
run)
_msg_info " Run command: ${run_cmd}"
;;
prepare)
;;
checksum)
......@@ -159,20 +208,23 @@ _pacman ()
{
_msg_info "Installing packages to '${work_dir}/root-image/'..."
_chroot_mount
if [[ "${quiet}" = "y" ]]; then
mkarchroot -n -C "${pacman_conf}" -f "${work_dir}/root-image" $* &> /dev/null
pacman -Sy -r "${work_dir}/root-image" --config "${pacman_conf}" --needed --noconfirm $* &> /dev/null
else
mkarchroot -n -C "${pacman_conf}" -f "${work_dir}/root-image" $*
pacman -Sy -r "${work_dir}/root-image" --config "${pacman_conf}" --needed --noconfirm $*
fi
# Cleanup
find "${work_dir}" -name "*.pacnew" -name "*.pacsave" -name "*.pacorig" -delete
_chroot_umount
_msg_info "Packages installed successfully!"
}
# Cleanup root-image
_cleanup () {
_msg_info "Cleaning up what we can on root-image"
# remove the initcpio images that were generated for the host system
if [[ -d "${work_dir}/root-image/boot" ]]; then
find "${work_dir}/root-image/boot" -name '*.img' -delete
......@@ -201,6 +253,8 @@ _cleanup () {
if [[ -d "${work_dir}/root-image/tmp" ]]; then
find "${work_dir}/root-image/tmp" -mindepth 1 -delete
fi
# Delete package pacman related files.
find "${work_dir}" -name "*.pacnew" -name "*.pacsave" -name "*.pacorig" -delete
# Create etc/mtab if not is a symlink.
if [[ ! -L "${work_dir}/root-image/etc/mtab" ]]; then
ln -sf "/proc/self/mounts" "${work_dir}/root-image/etc/mtab"
......@@ -384,7 +438,7 @@ command_prepare () {
# Install packages on root-image.
# A basic check to avoid double execution/reinstallation is done via hashing package names.
command_create () {
command_install () {
if [[ ! -f "${pacman_conf}" ]]; then
_msg_error "Pacman config file '${pacman_conf}' does not exist" 1
fi
......@@ -397,27 +451,36 @@ command_create () {
_usage 1
fi
_show_config create
_show_config install
local _pkg_list_hash
_pkg_list_hash=$(echo ${pkg_list} | sort -u | md5sum | cut -c1-32)
if [[ -f "${work_dir}/create.${_pkg_list_hash}" ]]; then
if [[ -f "${work_dir}/install.${_pkg_list_hash}" ]]; then
_msg_info "These packages are already installed, skipping."
else
mkdir -p "${work_dir}/root-image/"
_pacman "${pkg_list}"
: > "${work_dir}/create.${_pkg_list_hash}"
: > "${work_dir}/install.${_pkg_list_hash}"
fi
}
command_init() {
_show_config init
_chroot_init
}
command_run() {
_show_config run
_chroot_run
}
if [[ ${EUID} -ne 0 ]]; then
_msg_error "This script must be run as root." 1
fi
while getopts 'p:C:L:P:A:D:w:o:vh' arg; do
while getopts 'p:r:C:L:P:A:D:w:o:vh' arg; do
case "${arg}" in
p) pkg_list="${pkg_list} ${OPTARG}" ;;
r) run_cmd="${OPTARG}" ;;
C) pacman_conf="${OPTARG}" ;;
L) iso_label="${OPTARG}" ;;
P) iso_publisher="${OPTARG}" ;;
......@@ -443,8 +506,14 @@ fi
command_name="${1}"
case "${command_name}" in
create)
command_create
init)
command_init
;;
install)
command_install
;;
run)
command_run
;;
prepare)
command_prepare
......
......@@ -15,8 +15,7 @@ script_path=$(readlink -f ${0%/*})
# Base installation (root-image)
make_basefs() {
mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" -p "base" create
mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" -p "syslinux" create
mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" init
}
# Copy mkinitcpio archiso hooks (root-image)
......@@ -33,7 +32,9 @@ make_setup_mkinitcpio() {
make_boot() {
if [[ ! -e ${work_dir}/build.${FUNCNAME} ]]; then
mkdir -p ${work_dir}/iso/${install_dir}/boot/${arch}
mkarchroot -n -r "mkinitcpio -c /etc/mkinitcpio-archiso.conf -k /boot/vmlinuz-linux -g /boot/archiso.img" ${work_dir}/root-image
mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" \
-r 'mkinitcpio -c /etc/mkinitcpio-archiso.conf -k /boot/vmlinuz-linux -g /boot/archiso.img' \
run
cp ${work_dir}/root-image/boot/archiso.img ${work_dir}/iso/${install_dir}/boot/${arch}/archiso.img
cp ${work_dir}/root-image/boot/vmlinuz-linux ${work_dir}/iso/${install_dir}/boot/${arch}/vmlinuz
: > ${work_dir}/build.${FUNCNAME}
......
......@@ -15,13 +15,13 @@ script_path=$(readlink -f ${0%/*})
# Base installation (root-image)
make_basefs() {
mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" -p "base" create
mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" -p "memtest86+ syslinux mkinitcpio-nfs-utils nbd curl" create
mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" init
mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" -p "memtest86+ mkinitcpio-nfs-utils nbd curl" install
}
# Additional packages (root-image)
make_packages() {
mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" -p "$(grep -v ^# ${script_path}/packages.${arch})" create
mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" -p "$(grep -v ^# ${script_path}/packages.${arch})" install
}
# Copy mkinitcpio archiso hooks (root-image)
......@@ -46,7 +46,9 @@ make_boot() {
local _src=${work_dir}/root-image
local _dst_boot=${work_dir}/iso/${install_dir}/boot
mkdir -p ${_dst_boot}/${arch}
mkarchroot -n -r "mkinitcpio -c /etc/mkinitcpio-archiso.conf -k /boot/vmlinuz-linux -g /boot/archiso.img" ${_src}
mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" \
-r 'mkinitcpio -c /etc/mkinitcpio-archiso.conf -k /boot/vmlinuz-linux -g /boot/archiso.img' \
run
mv ${_src}/boot/archiso.img ${_dst_boot}/${arch}/archiso.img
mv ${_src}/boot/vmlinuz-linux ${_dst_boot}/${arch}/vmlinuz
cp ${_src}/boot/memtest86+/memtest.bin ${_dst_boot}/memtest
......@@ -90,7 +92,6 @@ make_isolinux() {
}
# Customize installation (root-image)
# NOTE: mkarchroot should not be executed after this function is executed, otherwise will overwrites some custom files.
make_customize_root_image() {
if [[ ! -e ${work_dir}/build.${FUNCNAME} ]]; then
cp -af ${script_path}/root-image ${work_dir}
......@@ -99,8 +100,12 @@ make_customize_root_image() {
mkdir -p ${work_dir}/root-image/etc/pacman.d
wget -O ${work_dir}/root-image/etc/pacman.d/mirrorlist http://www.archlinux.org/mirrorlist/all/
sed -i "s/#Server/Server/g" ${work_dir}/root-image/etc/pacman.d/mirrorlist
chroot ${work_dir}/root-image /usr/sbin/locale-gen
chroot ${work_dir}/root-image /usr/sbin/useradd -m -p "" -g users -G "audio,disk,optical,wheel" arch
mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" \
-r 'locale-gen' \
run
mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" \
-r 'useradd -m -p "" -g users -G "audio,disk,optical,wheel" arch' \
run
: > ${work_dir}/build.${FUNCNAME}
fi
}
......
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