119 lines
3.0 KiB
Bash
Executable File
119 lines
3.0 KiB
Bash
Executable File
#!/bin/bash
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# matter-chroot | MatterLinux chroot script
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# MatterLinux 2023-2024 (https://matterlinux.xyz)
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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#############################
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## import common functions ##
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#############################
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location="$(dirname "${0}")"
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location="$(realpath "${location}")"
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commonsh="$(echo "${location}" | sed 's/\/bin/\/lib/g')/mtsc-common.sh"
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source "${commonsh}"
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if [ "${?}" != "0" ]; then
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echo "Failed to import mtsc-common"
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exit 1
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fi
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####################
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## util functions ##
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####################
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linkresolv(){
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if [ ! -f "${target}/etc/resolv.conf" ]; then
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ln -sf /run/systemd/resolve/resolv.conf "${target}/etc/resolv.conf"
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fi
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}
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chrt() {
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mount -t proc proc "${target}/proc"
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mount -t sysfs sysfs "${target}/sys"
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if [[ -d "${target}/sys/firmware/efi/efivars" ]]; then
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mount -t efivarfs efivarfs "${target}/sys/firmware/efi/efivars"
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fi
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mount -o bind /dev "${target}/dev"
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mount -t devpts none "${target}/dev/pts"
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mount --bind /run "${target}/run"
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linkresolv
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if [ -h "${target}/dev/shm" ]; then
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mkdir -p "${target}/$(readlink "${target}/dev/shm")"
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else
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mount -t tmpfs -o nosuid,nodev tmpfs "${target}/dev/shm"
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fi
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local prompt='\['$BOLD'\['$RED'(chroot)\['$RESET'\['$BOLD' \u@\h:\w#\['$RESET' '
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chroot "${target}" /usr/bin/env -i \
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HOME=/root \
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TERM="${TERM}" \
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PS1="${prompt}" \
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PATH=/usr/bin:/usr/sbin \
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"$@"
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local ret_code=$?
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# kill procs that may prevent umount
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killall -9 keyboxd 2> /dev/null
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killall -9 dirmngr 2> /dev/null
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killall -9 gpg-agent 2> /dev/null
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umount "${target}/proc"
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mountpoint -q "${target}/sys/firmware/efi/efivars" && umount "${target}/sys/firmware/efi/efivars"
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umount "${target}/sys"
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umount "${target}/dev/pts"
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mountpoint -q "${target}/dev/shm" && umount "${target}/dev/shm"
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umount "${target}/dev"
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umount "${target}/run"
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return $ret_code
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}
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#################
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## main script ##
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#################
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if [ "$EUID" -ne 0 ]; then
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error "Cannot chroot without root"
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exit 1
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fi
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if [ $# -eq 0 ]; then
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error "Please specify a directory"
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exit 1
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fi
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target="$(realpath "${1}")"
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if [ -f "${target}" ]; then
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error "${target} is a file"
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exit 1
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fi
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if [ ! -d "${target}" ]; then
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error "${target} does not exist"
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exit 1
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fi
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if [ $# -gt 1 ]; then
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chrt ${@:2}
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exit $?
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fi
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chrt bash --noprofile --login
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exit $?
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