#!/bin/sh
#-
# Copyright (c) 2016 Rubicon Communications, LLC
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$

dev_label() {
	if [ -z "${1}" -o -z "${2}" ]; then
		return
	fi

	local _fstype="${1}"
	local _device="${2}"

	case "${_fstype}" in
		ufs|swap)
			;;
		*)
			echo ${_device}
			return
	esac

	# Detect if device is already a label and return
	local _prefix=${_device%/*}
	case "${_prefix#/dev/}" in
		mirror|ufsid|label|geom|gpt|gptid)
			echo ${_device}
			return
			;;
	esac

	local _devname=${_device#/dev/}
	if [ -z "${_devname}" ]; then
		echo ${_device}
		return
	fi

	# Get already defined labels if exist
	local _label=""
	for lt in mirror label gpt ufsid gptid; do
		_label=$(glabel list ${_devname} 2>/dev/null \
		    | grep "Name: *${lt}/" \
		    | sed 's,^.*Name: *,,')

		if [ -n "${_label}" -a -e "/dev/${_label}" ]; then
			echo "/dev/${_label}"
			return
		fi
	done

	# No label found, lets create one. It should be swap
	if [ "${_fstype}" != "swap" ]; then
		echo ${_device}
		return
	fi

	glabel label swap${SWAPNUM} ${_device}
	# Error, don't use label
	if [ $? -ne 0 ]; then
		echo ${_device}
		return
	fi

	echo "/dev/label/swap${SWAPNUM}"
	SWAPNUM=$((SWAPNUM+1))
}

FSTAB=${BSDINSTALL_TMPETC}/fstab

if [ -z "${FSTAB}" -o ! -f "${FSTAB}" ]; then
	dialog --backtitle "pfSense Installer" --title "Error" \
	    --msgbox "Error creating device labels" 0 0
	exit 1
fi

TMP="${FSTAB}.tmp"

[ -f "${TMP}" ] \
    && rm -f ${TMP}

SWAPNUM=0
while read device mountpoint fstype options dump pass; do
	if ! echo "${device}" | egrep -q '^/dev/'; then
		continue
	fi

	label=$(dev_label ${fstype} ${device})

	# If label is blank, use device name
	label=${label:-${device}}

	printf "%s\t%s\t%s\t%s\t%s\t%s\n" ${label} ${mountpoint} ${fstype} \
	    ${options} ${dump} ${pass} >> ${TMP}
done < ${FSTAB}

mv ${TMP} ${FSTAB}