+++ /dev/null
-#!/bin/bash
-
-shopt -s extglob
-
-# generated from util-linux source: libmount/src/utils.c
-declare -A pseudofs_types=([anon_inodefs]=1
- [autofs]=1
- [bdev]=1
- [bpf]=1
- [binfmt_misc]=1
- [cgroup]=1
- [cgroup2]=1
- [configfs]=1
- [cpuset]=1
- [debugfs]=1
- [devfs]=1
- [devpts]=1
- [devtmpfs]=1
- [dlmfs]=1
- [efivarfs]=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:" "$@"; } >&2
-warning() { out "==> WARNING:" "$@"; } >&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" --bind &&
- chroot_add_mount tmp "$1/tmp" -t tmpfs -o mode=1777,strictatime,nodev,nosuid
-}
-
-chroot_teardown() {
- if (( ${#CHROOT_ACTIVE_MOUNTS[@]} )); then
- sleep 1
- umount "${CHROOT_ACTIVE_MOUNTS[@]}"
- fi
- 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"] ))
-}
-
-
-usage() {
- cat <<EOF
-usage: ${0##*/} chroot-dir [command]
-
- -h Print this help message
- -u <user>[:group] Specify non-root user and optional group to use
-
-If 'command' is unspecified, ${0##*/} will launch /bin/bash.
-
-Note that when using arch-chroot, the target chroot directory *should* be a
-mountpoint. This ensures that tools such as pacman(8) or findmnt(8) have an
-accurate hierarchy of the mounted filesystems within the chroot.
-
-If your chroot target is not a mountpoint, you can bind mount the directory on
-itself to make it a mountpoint, i.e. 'mount --bind /your/chroot /your/chroot'.
-
-EOF
-}
-
-chroot_add_resolv_conf() {
- local chrootdir=$1 resolv_conf=$1/etc/resolv.conf
-
- [[ -e /etc/resolv.conf ]] || return 0
-
- # Handle resolv.conf as a symlink to somewhere else.
- if [[ -L $chrootdir/etc/resolv.conf ]]; then
- # readlink(1) should always give us *something* since we know at this point
- # it's a symlink. For simplicity, ignore the case of nested symlinks.
- resolv_conf=$(readlink "$chrootdir/etc/resolv.conf")
- if [[ $resolv_conf = /* ]]; then
- resolv_conf=$chrootdir$resolv_conf
- else
- resolv_conf=$chrootdir/etc/$resolv_conf
- fi
-
- # ensure file exists to bind mount over
- if [[ ! -f $resolv_conf ]]; then
- install -Dm644 /dev/null "$resolv_conf" || return 1
- fi
- elif [[ ! -e $chrootdir/etc/resolv.conf ]]; then
- # The chroot might not have a resolv.conf.
- return 0
- fi
-
- chroot_add_mount /etc/resolv.conf "$resolv_conf" --bind
-}
-
-while getopts ':hu:' flag; do
- case $flag in
- h)
- usage
- exit 0
- ;;
- u)
- userspec=$OPTARG
- ;;
- :)
- die '%s: option requires an argument -- '\''%s'\' "${0##*/}" "$OPTARG"
- ;;
- ?)
- die '%s: invalid option -- '\''%s'\' "${0##*/}" "$OPTARG"
- ;;
- esac
-done
-shift $(( OPTIND - 1 ))
-
-(( EUID == 0 )) || die 'This script must be run with root privileges'
-(( $# )) || die 'No chroot directory specified'
-chrootdir=$1
-shift
-
-[[ -d $chrootdir ]] || die "Can't create chroot on non-directory %s" "$chrootdir"
-
-#if ! mountpoint -q "$chrootdir"; then
-# warning "$chrootdir is not a mountpoint. This may have undesirable side effects."
-#fi
-
-chroot_setup "$chrootdir" || die "failed to setup chroot %s" "$chrootdir"
-chroot_add_resolv_conf "$chrootdir" || die "failed to setup resolv.conf"
-
-chroot_args=()
-[[ $userspec ]] && chroot_args+=(--userspec "$userspec")
-
-SHELL=/bin/bash unshare --fork --pid chroot "${chroot_args[@]}" -- "$chrootdir" "$@"
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