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- [root@917e8160b71e /]# cat /usr/sbin/pacstrap
- #!/bin/bash
- #
- # Assumptions:
- # 1) User has partitioned, formatted, and mounted partitions on /mnt
- # 2) Network is functional
- # 3) Arguments passed to the script are valid pacman targets
- # 4) A valid mirror appears in /etc/pacman.d/mirrorlist
- #
- shopt -s extglob
- # generated from util-linux source: libmount/src/utils.c
- declare -A pseudofs_types=([anon_inodefs]=1
- [autofs]=1
- [bdev]=1
- [binfmt_misc]=1
- [cgroup]=1
- [cgroup2]=1
- [configfs]=1
- [cpuset]=1
- [debugfs]=1
- [devfs]=1
- [devpts]=1
- [devtmpfs]=1
- [dlmfs]=1
- [fuse.gvfs-fuse-daemon]=1
- [fusectl]=1
- [hugetlbfs]=1
- [mqueue]=1
- [nfsd]=1
- [none]=1
- [pipefs]=1
- [proc]=1
- [pstore]=1
- [ramfs]=1
- [rootfs]=1
- [rpc_pipefs]=1
- [securityfs]=1
- [sockfs]=1
- [spufs]=1
- [sysfs]=1
- [tmpfs]=1)
- # generated from: pkgfile -vbr '/fsck\..+' | awk -F. '{ print $NF }' | sort
- declare -A fsck_types=([cramfs]=1
- [exfat]=1
- [ext2]=1
- [ext3]=1
- [ext4]=1
- [ext4dev]=1
- [jfs]=1
- [minix]=1
- [msdos]=1
- [reiserfs]=1
- [vfat]=1
- [xfs]=1)
- out() { printf "$1 $2\n" "${@:3}"; }
- error() { out "==> ERROR:" "$@"; } >&2
- msg() { out "==>" "$@"; }
- msg2() { out " ->" "$@";}
- die() { error "$@"; exit 1; }
- ignore_error() {
- "$@" 2>/dev/null
- return 0
- }
- in_array() {
- local i
- for i in "${@:2}"; do
- [[ $1 = "$i" ]] && return 0
- done
- return 1
- }
- chroot_add_mount() {
- mount "$@" && CHROOT_ACTIVE_MOUNTS=("$2" "${CHROOT_ACTIVE_MOUNTS[@]}")
- }
- chroot_maybe_add_mount() {
- local cond=$1; shift
- if eval "$cond"; then
- chroot_add_mount "$@"
- fi
- }
- chroot_setup() {
- CHROOT_ACTIVE_MOUNTS=()
- [[ $(trap -p EXIT) ]] && die '(BUG): attempting to overwrite existing EXIT trap'
- trap 'chroot_teardown' EXIT
- chroot_add_mount proc "$1/proc" -t proc -o nosuid,noexec,nodev &&
- chroot_add_mount sys "$1/sys" -t sysfs -o nosuid,noexec,nodev,ro &&
- ignore_error chroot_maybe_add_mount "[[ -d '$1/sys/firmware/efi/efivars' ]]" \
- efivarfs "$1/sys/firmware/efi/efivars" -t efivarfs -o nosuid,noexec,nodev &&
- chroot_add_mount udev "$1/dev" -t devtmpfs -o mode=0755,nosuid &&
- chroot_add_mount devpts "$1/dev/pts" -t devpts -o mode=0620,gid=5,nosuid,noexec &&
- chroot_add_mount shm "$1/dev/shm" -t tmpfs -o mode=1777,nosuid,nodev &&
- chroot_add_mount run "$1/run" -t tmpfs -o nosuid,nodev,mode=0755 &&
- chroot_add_mount tmp "$1/tmp" -t tmpfs -o mode=1777,strictatime,nodev,nosuid
- }
- chroot_teardown() {
- umount "${CHROOT_ACTIVE_MOUNTS[@]}"
- unset CHROOT_ACTIVE_MOUNTS
- }
- try_cast() (
- _=$(( $1#$2 ))
- ) 2>/dev/null
- valid_number_of_base() {
- local base=$1 len=${#2} i=
- for (( i = 0; i < len; i++ )); do
- try_cast "$base" "${2:i:1}" || return 1
- done
- return 0
- }
- mangle() {
- local i= chr= out=
- local {a..f}= {A..F}=
- for (( i = 0; i < ${#1}; i++ )); do
- chr=${1:i:1}
- case $chr in
- [[:space:]\\])
- printf -v chr '%03o' "'$chr"
- out+=\\
- ;;
- esac
- out+=$chr
- done
- printf '%s' "$out"
- }
- unmangle() {
- local i= chr= out= len=$(( ${#1} - 4 ))
- local {a..f}= {A..F}=
- for (( i = 0; i < len; i++ )); do
- chr=${1:i:1}
- case $chr in
- \\)
- if valid_number_of_base 8 "${1:i+1:3}" ||
- valid_number_of_base 16 "${1:i+1:3}"; then
- printf -v chr '%b' "${1:i:4}"
- (( i += 3 ))
- fi
- ;;
- esac
- out+=$chr
- done
- printf '%s' "$out${1:i}"
- }
- optstring_match_option() {
- local candidate pat patterns
- IFS=, read -ra patterns <<<"$1"
- for pat in "${patterns[@]}"; do
- if [[ $pat = *=* ]]; then
- # "key=val" will only ever match "key=val"
- candidate=$2
- else
- # "key" will match "key", but also "key=anyval"
- candidate=${2%%=*}
- fi
- [[ $pat = "$candidate" ]] && return 0
- done
- return 1
- }
- optstring_remove_option() {
- local o options_ remove=$2 IFS=,
- read -ra options_ <<<"${!1}"
- for o in "${!options_[@]}"; do
- optstring_match_option "$remove" "${options_[o]}" && unset 'options_[o]'
- done
- declare -g "$1=${options_[*]}"
- }
- optstring_normalize() {
- local o options_ norm IFS=,
- read -ra options_ <<<"${!1}"
- # remove empty fields
- for o in "${options_[@]}"; do
- [[ $o ]] && norm+=("$o")
- done
- # avoid empty strings, reset to "defaults"
- declare -g "$1=${norm[*]:-defaults}"
- }
- optstring_append_option() {
- if ! optstring_has_option "$1" "$2"; then
- declare -g "$1=${!1},$2"
- fi
- optstring_normalize "$1"
- }
- optstring_prepend_option() {
- local options_=$1
- if ! optstring_has_option "$1" "$2"; then
- declare -g "$1=$2,${!1}"
- fi
- optstring_normalize "$1"
- }
- optstring_get_option() {
- local opts o
- IFS=, read -ra opts <<<"${!1}"
- for o in "${opts[@]}"; do
- if optstring_match_option "$2" "$o"; then
- declare -g "$o"
- return 0
- fi
- done
- return 1
- }
- optstring_has_option() {
- local "${2%%=*}"
- optstring_get_option "$1" "$2"
- }
- dm_name_for_devnode() {
- read dm_name <"/sys/class/block/${1#/dev/}/dm/name"
- if [[ $dm_name ]]; then
- printf '/dev/mapper/%s' "$dm_name"
- else
- # don't leave the caller hanging, just print the original name
- # along with the failure.
- print '%s' "$1"
- error 'Failed to resolve device mapper name for: %s' "$1"
- fi
- }
- fstype_is_pseudofs() {
- (( pseudofs_types["$1"] ))
- }
- fstype_has_fsck() {
- (( fsck_types["$1"] ))
- }
- hostcache=0
- copykeyring=1
- copymirrorlist=1
- usage() {
- cat <<EOF
- usage: ${0##*/} [options] root [packages...]
- Options:
- -C config Use an alternate config file for pacman
- -c Use the package cache on the host, rather than the target
- -G Avoid copying the host's pacman keyring to the target
- -i Avoid auto-confirmation of package selections
- -M Avoid copying the host's mirrorlist to the target
- -h Print this help message
- pacstrap installs packages to the specified new root directory. If no packages
- are given, pacstrap defaults to the "base" group.
- EOF
- }
- if [[ -z $1 || $1 = @(-h|--help) ]]; then
- usage
- exit $(( $# ? 0 : 1 ))
- fi
- (( EUID == 0 )) || die 'This script must be run with root privileges'
- while getopts ':C:cdGiM' flag; do
- case $flag in
- C)
- pacman_config=$OPTARG
- ;;
- d)
- # retired flag. does nothing.
- ;;
- c)
- hostcache=1
- ;;
- i)
- interactive=1
- ;;
- G)
- copykeyring=0
- ;;
- M)
- copymirrorlist=0
- ;;
- :)
- die '%s: option requires an argument -- '\''%s'\' "${0##*/}" "$OPTARG"
- ;;
- ?)
- die '%s: invalid option -- '\''%s'\' "${0##*/}" "$OPTARG"
- ;;
- esac
- done
- shift $(( OPTIND - 1 ))
- (( $# )) || die "No root directory specified"
- newroot=$1; shift
- pacman_args=("${@:-base}")
- if (( ! hostcache )); then
- pacman_args+=(--cachedir="$newroot/var/cache/pacman/pkg")
- fi
- if (( ! interactive )); then
- pacman_args+=(--noconfirm)
- fi
- if [[ $pacman_config ]]; then
- pacman_args+=(--config="$pacman_config")
- fi
- [[ -d $newroot ]] || die "%s is not a directory" "$newroot"
- # create obligatory directories
- msg 'Creating install root at %s' "$newroot"
- mkdir -m 0755 -p "$newroot"/var/{cache/pacman/pkg,lib/pacman,log} "$newroot"/{dev,run,etc}
- mkdir -m 1777 -p "$newroot"/tmp
- mkdir -m 0555 -p "$newroot"/{sys,proc}
- # mount API filesystems
- chroot_setup "$newroot" || die "failed to setup chroot %s" "$newroot"
- msg 'Installing packages to %s' "$newroot"
- if ! pacman -r "$newroot" -Sy "${pacman_args[@]}"; then
- die 'Failed to install packages to new root'
- fi
- if (( copykeyring )); then
- # if there's a keyring on the host, copy it into the new root, unless it exists already
- if [[ -d /etc/pacman.d/gnupg && ! -d $newroot/etc/pacman.d/gnupg ]]; then
- cp -a /etc/pacman.d/gnupg "$newroot/etc/pacman.d/"
- fi
- fi
- if (( copymirrorlist )); then
- # install the host's mirrorlist onto the new root
- cp -a /etc/pacman.d/mirrorlist "$newroot/etc/pacman.d/"
- fi
- # vim: et ts=2 sw=2 ft=sh:
- [root@917e8160b71e /]#
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