#!/bin/bash
#
# This file is part of util-linux.
#
# Copyright (C) 2013 Karel Zak <kzak@redhat.com>
#
# This file is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This file is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
#

TS_TOPDIR="${0%/*}/../.."
TS_DESC="nested BSD"

. $TS_TOPDIR/functions.sh
ts_init "$*"

ts_check_test_command "$TS_CMD_FDISK"
ts_check_test_command "$TS_HELPER_SYSINFO"

FDISK_CMD_CREATE_DOSLABEL="o\n"              # create dos label
FDISK_CMD_SETID="x\ni\n0x1\nr\n"             # set non-random ID
FDISK_CMD_WRITE_CLOSE="w\nq\n"               # write to image
FDISK_CMD_CREATE_PRIMARY1="n\np\n1\n\n+1M\n" # 1st primary partition of size 1MiB
FDISK_CMD_CREATE_PRIMARY2="n\np\n2\n\n\n"    # 2nd primary partition for whole of the disk
FDISK_CMD_CHANGE_PART2TYPE="t\n2\na5\n"      # change partition type FreeBSD

FDISK_CMD_BSD_CREATE="b\ny\n"                # create nested BSD PT
FDISK_CMD_BSD_LIST="b\np\nr\nq\n"            # list nested BSD PT and quit
FDISK_CMD_BSD_CREATE_PART="b\nn\na\n\n+1M\n" # add BSD partition 'a', size 1MiB
FDISK_CMD_BSD_PARTTYPE="b\nt\na\n7\n"        # set partition 'a' to type 4.2BSD
FDISK_CMD_BSD_LIST_TYPES="b\nl\nq\n"         # list supported PT types and quit

#set -x

# BSD disklabel depends on sector/offset and endianess. We convert the md5sums
# into the most common values (little endian, BSD_LABELSECTOR = 1, 
# BSD_LABELOFFSET = 0) so that they can be easily compared to the expected
# ones.
BYTE_ORDER=$($TS_HELPER_SYSINFO byte-order)
function fdisk_bsd_offset_and_byte_order_clean
{
		# expected md5sums are from x86 systems
		local md5_bsdimg1_LE_0_64="2e1cee529cb59c9341afef0443f196a1"
		local md5_bsdimg2_LE_0_64="b5c121c2091b2ff26b880551feac7112"

        if [ $BYTE_ORDER = "BE" ] ; then
		# BSD_LABELSECTOR = 0, BSD_LABELOFFSET = 64
		sed -i \
		-e "s/c2273b52976351db75596c47c10b0725/$md5_bsdimg1_LE_0_64/" \
		-e "s/9a234a5b99e37d2ce0d92b65437b93cd/$md5_bsdimg2_LE_0_64/" \
		"$TS_OUTPUT"

		# BSD_LABELSECTOR = 1, BSD_LABELOFFSET = 0
		sed -i \
		-e "s/e990c8a1c2106a4cd4b008f16d71aaa6/$md5_bsdimg1_LE_0_64/" \
		-e "s/187a48c26e83d146b866868addc93702/$md5_bsdimg2_LE_0_64/" \
		"$TS_OUTPUT"
	else
		# BSD_LABELSECTOR = 0, BSD_LABELOFFSET = 64
		sed -i \
		-e "s/6d760d7a8ef33b27cc6e27f1e8807d48/$md5_bsdimg1_LE_0_64/" \
		-e "s/3739c7959adb42693a69edb7a99914e8/$md5_bsdimg2_LE_0_64/" \
		"$TS_OUTPUT"
	fi
}

function print_layout {
	echo -ne "\n---layout----------\n" >> $TS_OUTPUT
	$TS_CMD_FDISK -l ${TEST_IMAGE_NAME}  >> $TS_OUTPUT
	echo -ne   "-------------------\n\n" >> $TS_OUTPUT
}

function print_bsd_layout {
	echo -ne "\n---layout----------\n" >> $TS_OUTPUT
	echo -e "${FDISK_CMD_BSD_LIST}" | \
			$TS_CMD_FDISK ${TEST_IMAGE_NAME} >> $TS_OUTPUT
	echo -ne   "-------------------\n\n" >> $TS_OUTPUT
}

ts_log "Initialize empty image"
TEST_IMAGE_NAME=$(ts_image_init 10)
ts_image_md5sum >> $TS_OUTPUT 2>&1

ts_log "Create new DOS partition table"
echo -e "${FDISK_CMD_CREATE_DOSLABEL}${FDISK_CMD_SETID}${FDISK_CMD_WRITE_CLOSE}" \
	 | $TS_CMD_FDISK ${TEST_IMAGE_NAME} &> /dev/null
ts_image_md5sum >> $TS_OUTPUT 2>&1

print_layout

ts_log "Create 1st primary partition"
echo -e "${FDISK_CMD_CREATE_PRIMARY1}${FDISK_CMD_WRITE_CLOSE}" | \
	$TS_CMD_FDISK ${TEST_IMAGE_NAME} &> /dev/null
ts_image_md5sum >> $TS_OUTPUT 2>&1

print_layout

ts_log "Create 2st primary partition"
echo -e "${FDISK_CMD_CREATE_PRIMARY2}${FDISK_CMD_WRITE_CLOSE}" | \
	$TS_CMD_FDISK ${TEST_IMAGE_NAME} &> /dev/null
ts_image_md5sum >> $TS_OUTPUT 2>&1

ts_log "Set 2nd partition type"
echo -e "${FDISK_CMD_CHANGE_PART2TYPE}${FDISK_CMD_WRITE_CLOSE}" | \
	$TS_CMD_FDISK ${TEST_IMAGE_NAME} &> /dev/null
ts_image_md5sum >> $TS_OUTPUT 2>&1

print_layout

ts_log "Create default BSD"
echo -e "${FDISK_CMD_BSD_CREATE}${FDISK_CMD_WRITE_CLOSE}" | \
	$TS_CMD_FDISK ${TEST_IMAGE_NAME} &> /dev/null
ts_image_md5sum >> $TS_OUTPUT 2>&1

print_bsd_layout

echo -e "${FDISK_CMD_BSD_CREATE_PART}${FDISK_CMD_WRITE_CLOSE}" | \
	$TS_CMD_FDISK ${TEST_IMAGE_NAME} &> /dev/null

echo -e "${FDISK_CMD_BSD_PARTTYPE}${FDISK_CMD_WRITE_CLOSE}" | \
	$TS_CMD_FDISK ${TEST_IMAGE_NAME} &> /dev/null
ts_image_md5sum >> $TS_OUTPUT 2>&1

print_bsd_layout

echo -e "${FDISK_CMD_BSD_LIST_TYPES}" | \
	$TS_CMD_FDISK ${TEST_IMAGE_NAME} | \
	sed 's/Reading .*//g; s/Welcome to fdisk .*//' >> $TS_OUTPUT 2>&1

fdisk_bsd_offset_and_byte_order_clean
ts_fdisk_clean ${TEST_IMAGE_NAME}
ts_finalize