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https://github.com/hackacad/bastille.git
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ce0ab9d364
in fstab. Unfortunately it breaks scenarios where no options are provided as the current regex expects the comma with the options always to be present. This patch fixes the regex to handle the options as group.
161 lines
6.8 KiB
Bash
161 lines
6.8 KiB
Bash
#!/bin/sh
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#
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# SPDX-License-Identifier: BSD-3-Clause
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#
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# Copyright (c) 2018-2025, Christer Edwards <christer.edwards@gmail.com>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice, this
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# list of conditions and the following disclaimer.
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#
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# * Neither the name of the copyright holder nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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. /usr/local/share/bastille/common.sh
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. /usr/local/etc/bastille/bastille.conf
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usage() {
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error_exit "Usage: bastille mount TARGET HOST_PATH JAIL_PATH [filesystem_type options dump pass_number]"
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}
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# Handle special-case commands first.
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case "${1}" in
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help|-h|--help)
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usage
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;;
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esac
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if [ "$#" -lt 3 ] || [ "$#" -gt 7 ]; then
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usage
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fi
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TARGET="${1}"
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shift
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if [ "$#" -eq 2 ]; then
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_fstab="$(echo "$* nullfs ro 0 0" | sed 's#\\ #\\040#g')"
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else
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_fstab="$(echo "$*" | sed 's#\\ #\\040#g')"
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fi
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bastille_root_check
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set_target "${TARGET}"
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# Assign variables
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_hostpath_fstab=$(echo "${_fstab}" | awk '{print $1}')
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_hostpath="$(echo "${_hostpath_fstab}" 2>/dev/null | sed 's#\\040# #g')"
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_jailpath_fstab=$(echo "${_fstab}" | awk '{print $2}')
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_jailpath="$(echo "${_jailpath_fstab}" 2>/dev/null | sed 's#\\040# #g')"
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_type=$(echo "${_fstab}" | awk '{print $3}')
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_perms=$(echo "${_fstab}" | awk '{print $4}')
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_checks=$(echo "${_fstab}" | awk '{print $5" "$6}')
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# Exit if any variables are empty
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if [ -z "${_hostpath}" ] || [ -z "${_jailpath}" ] || [ -z "${_type}" ] || [ -z "${_perms}" ] || [ -z "${_checks}" ]; then
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error_notify "FSTAB format not recognized."
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warn "Format: /host/path /jail/path nullfs ro 0 0"
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warn "Read: ${_fstab}"
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usage
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fi
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# Exit if host path doesn't exist, type is not "nullfs", or mount is an advanced mount type "tmpfs,linprocfs,linsysfs,fdescfs,procfs"
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if { [ "${_hostpath}" = "tmpfs" ] && [ "$_type" = "tmpfs" ]; } || \
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{ [ "${_hostpath}" = "linprocfs" ] && [ "${_type}" = "linprocfs" ]; } || \
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{ [ "${_hostpath}" = "linsysfs" ] && [ "${_type}" = "linsysfs" ]; } || \
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{ [ "${_hostpath}" = "proc" ] && [ "${_type}" = "procfs" ]; } || \
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{ [ "${_hostpath}" = "fdesc" ] && [ "${_type}" = "fdescfs" ]; } then
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warn "Detected advanced mount type ${_hostpath}"
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elif [ ! -e "${_hostpath}" ] || [ "${_type}" != "nullfs" ]; then
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error_notify "Invalid host path or incorrect mount type in FSTAB."
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warn "Format: /host/path /jail/path nullfs ro 0 0"
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warn "Read: ${_fstab}"
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usage
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fi
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# Mount permissions,options need to start with "ro" or "rw"
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if ! echo "${_perms}" | grep -Eq 'r[w|o](,.*)?$'; then
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error_notify "Detected invalid mount permissions in FSTAB."
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warn "Format: /host/path /jail/path nullfs ro 0 0"
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warn "Read: ${_fstab}"
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usage
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fi
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# Dump and pass need to be "0 0 - 1 1"
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if [ "${_checks}" != "0 0" ] && [ "${_checks}" != "1 0" ] && [ "${_checks}" != "0 1" ] && [ "${_checks}" != "1 1" ]; then
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error_notify "Detected invalid fstab options in FSTAB."
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warn "Format: /host/path /jail/path nullfs ro 0 0"
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warn "Read: ${_fstab}"
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usage
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fi
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for _jail in ${JAILS}; do
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info "[${_jail}]:"
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_fullpath_fstab="$( echo "${bastille_jailsdir}/${_jail}/root/${_jailpath_fstab}" 2>/dev/null | sed 's#//#/#' )"
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_fullpath="$( echo "${bastille_jailsdir}/${_jail}/root/${_jailpath}" 2>/dev/null | sed 's#//#/#' )"
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_fstab_entry="${_hostpath_fstab} ${_fullpath_fstab} ${_type} ${_perms} ${_checks}"
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# Check if mount point has already been added
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_existing_mount="$(echo ${_fullpath_fstab} 2>/dev/null | sed 's#\\#\\\\#g')"
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if grep -Eq "[[:blank:]]${_existing_mount}.*[[:blank:]]" "${bastille_jailsdir}/${_jail}/fstab"; then
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warn "Mountpoint already present in ${bastille_jailsdir}/${_jail}/fstab"
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grep -E "[[:blank:]]${_existing_mount}" "${bastille_jailsdir}/${_jail}/fstab"
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continue
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fi
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# Create mount point if it does not exist
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if [ -d "${_hostpath}" ] && [ ! -d "${_fullpath}" ]; then
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mkdir -p "${_fullpath}" || error_continue "Failed to create mount point."
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elif [ -f "${_hostpath}" ] ; then
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_filename="$( basename ${_hostpath} )"
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if echo "${_fullpath}" 2>/dev/null | grep -qow "${_filename}"; then
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mkdir -p "$( dirname "${_fullpath}" )" || error_continue "Failed to create mount point."
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if [ ! -f "${_fullpath}" ]; then
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touch "${_fullpath}" || error_continue "Failed to create mount point."
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else
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error_notify "Failed. File exists at mount point."
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warn "${_fullpath}"
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continue
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fi
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else
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_fullpath_fstab="$( echo "${bastille_jailsdir}/${_jail}/root/${_jailpath_fstab}/${_filename}" 2>/dev/null | sed 's#//#/#' )"
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_fullpath="$( echo "${bastille_jailsdir}/${_jail}/root/${_jailpath}/${_filename}" 2>/dev/null | sed 's#//#/#' )"
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_fstab_entry="${_hostpath_fstab} ${_fullpath_fstab} ${_type} ${_perms} ${_checks}"
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mkdir -p "$( dirname "${_fullpath}" )" || error_continue "Failed to create mount point."
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if [ ! -f "${_fullpath}" ]; then
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touch "${_fullpath}" || error_continue "Failed to create mount point."
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else
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error_notify "Failed. File exists at mount point."
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warn "${_fullpath}"
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continue
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fi
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fi
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fi
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# Add entry to fstab and mount
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echo "${_fstab_entry}" >> "${bastille_jailsdir}/${_jail}/fstab" || error_continue "Failed to create fstab entry: ${_fstab_entry}"
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mount -F "${bastille_jailsdir}/${_jail}/fstab" -a || error_continue "Failed to mount volume: ${_fullpath}"
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echo "Added: ${_fstab_entry}"
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done
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