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212 lines
8.0 KiB
Bash
212 lines
8.0 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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usage() {
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error_notify "Usage: bastille mount [option(s)] TARGET HOST_PATH JAIL_PATH [filesystem_type options dump pass_number]"
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cat << EOF
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Options:
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-a | --auto Auto mode. Start/stop jail(s) if required.
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-x | --debug Enable debug mode.
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EOF
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exit 1
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}
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# Handle options.
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AUTO=0
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while [ "$#" -gt 0 ]; do
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case "${1}" in
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-h|--help|help)
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usage
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;;
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-a|--auto)
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AUTO=1
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shift
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;;
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-x|--debug)
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enable_debug
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shift
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;;
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-*)
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for _opt in $(echo ${1} | sed 's/-//g' | fold -w1); do
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case ${_opt} in
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a) AUTO=1 ;;
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x) enable_debug ;;
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*) error_exit "[ERROR]: Unknown Option: \"${1}\""
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esac
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done
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shift
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;;
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*)
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break
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;;
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esac
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done
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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: ${_fstab}"
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fi
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# Warn on advanced mount option "tmpfs,linprocfs,linsysfs,fdescfs,procfs,zfs"
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# Create host path if non-existent
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if { [ "${_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" ] && [ "${_type}" = "fdescfs" ]; } || \
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{ [ "${_type}" = "zfs" ] && zfs list ${_hostpath} >/dev/null 2>/dev/null; } then
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warn "\n[WARNING]: Detected advanced mount type: \"${_type}\""
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elif [ ! -e "${_hostpath}" ] && [ "${_type}" = "nullfs" ]; then
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mkdir -p "${_hostpath}"
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elif [ ! -e "${_hostpath}" ] || [ "${_type}" != "nullfs" ]; then
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error_notify "[ERROR]: 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: ${_fstab}"
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exit 1
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fi
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# Mount permissions,options must include one of "ro, rw, rq, sw, xx"
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if ! echo "${_perms}" | grep -Eq '(ro|rw|rq|sw|xx)(,.*)?$'; 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: ${_fstab}"
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exit 1
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fi
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# Dump and pass need to be "0 0 - 1 1"
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if [ "${_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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exit 1
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fi
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for _jail in ${JAILS}; do
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(
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check_target_is_running "${_jail}" || if [ "${AUTO}" -eq 1 ]; then
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bastille start "${_jail}"
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else
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info "\n[${_jail}]:"
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error_notify "Jail is not running."
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error_continue "Use [-a|--auto] to auto-start the jail."
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fi
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info "\n[${_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}" ] || [ "${_type}" = "zfs" ]; } && [ ! -d "${_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: ${_fstab_entry}"
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) &
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bastille_running_jobs "${bastille_process_limit}"
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done
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wait
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