284 lines
6.8 KiB
Bash
Executable file
284 lines
6.8 KiB
Bash
Executable file
#!/usr/bin/env bash
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ALPINE="https://dl-cdn.alpinelinux.org/alpine/v3.20/releases/x86_64/alpine-minirootfs-3.20.3-x86_64.tar.gz"
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CHROOTDIR="./alpine_chroot"
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QEMU_STATIC_URL="https://github.com/multiarch/qemu-user-static/releases/download/v7.2.0-1/qemu-aarch64-static"
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log()
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{
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case "$2" in
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error)
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printf "\e[1m\e[31mERROR:\e[0m \e[1m%s\e[0m (host)\n" "$1">&2;;
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internal)
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printf "\e[1m\e[96m h>\e[0m \e[1m%s\e[0m\n" "$1">&2;;
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ierror)
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printf "\e[1m\e[31m h>\e[0m \e[1m%s\e[0m\n" "$1">&2;;
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*)
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printf "\e[1m\e[92mH>>\e[0m \e[1m%s\e[0m\n" "$1">&2;;
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esac
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}
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mkdir_if_not_exists()
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{
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[ -d "$1" ] && return 0
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[ -f "$1" ] && rm -f "$1"
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mkdir "$1"
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}
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umount_if_mouted()
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{
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[ ! -d "$1" ] && return 0
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if grep -qs "$(realpath "$1")" /proc/mounts; then
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umount "$1"
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return $?
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else
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return 0
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fi
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}
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require ()
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{
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which "$1" > /dev/null 2>&1 ||
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{
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log "$1 not found" error
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exit 1
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}
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}
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# shellcheck disable=SC2161
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# shellcheck disable=SC2086
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arguments() {
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while [[ $# -gt 0 ]]; do
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opt="$1"
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shift
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case "$(echo ${opt} | tr '[:upper:]' '[:lower:]')" in
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install)
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install_chroot
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break 2 ;;
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remove)
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remove_chroot
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break 2 ;;
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chroot)
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chroot_into
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break 2 ;;
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-h | -help | --help)
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usage ;;
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*)
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log "Unknown option: $opt" error
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break 2 ;;
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esac
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done
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}
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usage() {
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log "Usage commands:"
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cat <<EOF
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# Help screen (this)
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$0 --help or $0 -h
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# Setup build chroot
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$0 install
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# Remove build chroot
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$0 uninstall
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# Chroot into
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$0 chroot
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EOF
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exit 0
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}
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# shellcheck disable=SC2317
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_shutdown()
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{
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detach_chroot
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if [ -z ${1+x} ]; then
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exit 0
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else
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exit "$1"
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fi
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}
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sigterm_handler()
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{
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sig=$?
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printf "\e[1m\e[31m>>\e[0m \e[1m%s\e[0m\n" "Shutdown signal received."
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_shutdown $sig
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}
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trap 'trap " " SIGINT SIGTERM SIGHUP; kill 0; wait; sigterm_handler' SIGINT SIGTERM SIGHUP
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# Chroot functions
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require "lsof"
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require "tar"
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require "gzip"
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require "wget"
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setup_inet()
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{
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[ ! -d "$CHROOTDIR" ] && {
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log "Rootdir [$CHROOTDIR] does not exists" ierror
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return 2
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}
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echo "nameserver 1.1.1.1" > "$CHROOTDIR/etc/resolv.conf"
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echo "makelnichroot" > "$CHROOTDIR/etc/hostname"
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echo "127.0.0.1 localhost" > "$CHROOTDIR/etc/hosts"
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}
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prepare_chroot()
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{
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[ ! -d "$CHROOTDIR" ] && {
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log "Rootdir [$CHROOTDIR] does not exists" ierror
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return 2
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}
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export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:\$PATH
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mount --bind "$CHROOTDIR" "$CHROOTDIR"
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mount -t proc proc "$CHROOTDIR/proc"
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mount -t sysfs sysfs "$CHROOTDIR/sys"
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mount -t devtmpfs devtmpfs "$CHROOTDIR/dev"
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mount -t devpts devpts "$CHROOTDIR/dev/pts"
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mount -t tmpfs devshm "$CHROOTDIR/dev/shm"
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if uname -m | grep -q aarch64 || [ -f "/proc/sys/fs/binfmt_misc/qemu-aarch64" ]; then
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log "Cancel qemu-aarch64-static register"
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else
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# shellcheck disable=SC2028
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echo ':aarch64:M::\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xb7\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:'"$(realpath $CHROOTDIR/qemu-aarch64-static):PF" > /proc/sys/fs/binfmt_misc/register 2> /dev/null || true
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# shellcheck disable=SC2028
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echo ':aarch64ld:M::\x7fELF\x02\x01\x01\x03\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\xb7\x00:\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:'"$(realpath $CHROOTDIR/qemu-aarch64-static):PF" > /proc/sys/fs/binfmt_misc/register 2> /dev/null || true
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fi
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}
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detach_chroot()
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{
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[ ! -d "$CHROOTDIR" ] && {
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log "Rootdir [$CHROOTDIR] does not exists" ierror
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return 2
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}
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umount_if_mouted "$CHROOTDIR/sys"
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umount_if_mouted "$CHROOTDIR/dev/pts"
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umount_if_mouted "$CHROOTDIR/dev/shm"
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umount_if_mouted "$CHROOTDIR/dev"
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umount_if_mouted "$CHROOTDIR/proc"
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if [ -f "/proc/sys/fs/binfmt_misc/aarch64" ]; then
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echo -1 > /proc/sys/fs/binfmt_misc/aarch64 2> /dev/null
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fi
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if [ -f "/proc/sys/fs/binfmt_misc/aarch64ld" ]; then
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echo -1 > /proc/sys/fs/binfmt_misc/aarch64ld 2> /dev/null
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fi
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umount_if_mouted "$CHROOTDIR"
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}
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install_chroot()
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{
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[ -d "$CHROOTDIR" ] && {
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log "Chroot already installed" error
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exit 1
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}
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mkdir "$CHROOTDIR"
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[ ! -f "./alpine.tar.gz" ] && {
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log "Downloading alpine rootfs tarball"
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wget -q --show-progress "$ALPINE" -O "./alpine.tar.gz" || {
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ec=$?
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log "Failed to download rootfs tarball" error
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exit "$ec"
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}
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}
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log "Extracting alpine rootfs tarball"
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tar -xzf "./alpine.tar.gz" -C "$CHROOTDIR/" || {
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log "Failed to extract rootfs" error
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}
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setup_inet
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prepare_chroot || {
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log "Failed to setup chroot" error
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exit 1
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}
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log "Updating apk repos"
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chroot "$CHROOTDIR" apk update || {
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log "Failed to update apk repos" error
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exit 1
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}
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log "Installing pakages"
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chroot "$CHROOTDIR" apk add shadow fish bash git debootstrap pixz losetup rsync pv wget e2fsprogs e2fsprogs-extra libarchive-tools coreutils || {
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log "Failed to install packages" error
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exit 1
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}
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chroot "$CHROOTDIR" chsh -s /usr/bin/fish root
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log "Cloning makelni repo"
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chroot "$CHROOTDIR" git clone "https://git.timoxa0.su/timoxa0/makelni.git" /makelni || {
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log "Failed to clone makelni repo" error
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exit 1
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}
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log "Installing qemu-aarch64-static"
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{
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wget -q --show-progress -N https://github.com/multiarch/qemu-user-static/releases/download/v7.2.0-1/qemu-aarch64-static -O "$CHROOTDIR/qemu-aarch64-static" && chmod 755 "$CHROOTDIR/qemu-aarch64-static"
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} || {
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log "Failed to install qemu-aarch64-static" error
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exit 1
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}
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detach_chroot || {
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log "Failed to detach chroot" error
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exit 1
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}
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log "Done!"
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exit 0
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}
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remove_chroot()
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{
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[ ! -d "$CHROOTDIR" ] && {
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log "Chroot not installed" error
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exit 1
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}
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detach_chroot || {
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log "Failed to umount chroot" error
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exit 1
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}
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log "Done!"
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rm -rf "${CHROOTDIR:?}/"
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}
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chroot_into()
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{
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prepare_chroot || {
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log "Failed to setup chroot" error
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exit 1
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}
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chroot "$CHROOTDIR" /usr/bin/fish
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detach_chroot || {
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log "Failed to detach chroot" error
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exit 1
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}
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}
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if [ "$(id -u)" != "0" ]; then
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log "$0 must be run as root"
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exit 3
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fi
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[[ "$(uname -m)" != "x86_64*" ]] || {
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printf "Unsupported CPU arch\n"
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exit 1
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}
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arguments "$*"
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