#! /bin/sh
set -e

# Copyright (C) 2010  Free Software Foundation, Inc.
#
# GRUB 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 3 of the License, or
# (at your option) any later version.
#
# GRUB 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.
#
# You should have received a copy of the GNU General Public License
# along with GRUB.  If not, see <http://www.gnu.org/licenses/>.

parted=parted
grubshell=@builddir@/grub-shell

. "@builddir@/grub-core/modinfo.sh"

create_disk_image () {
    name="$1"
    size=$2
    rm -f "${name}"
    dd if=/dev/zero of="${name}" bs=512 count=1 seek=$((size * 2048 - 1)) status=noxfer > /dev/null
}

check_output () {
    outfile=$1
    shift

    for dsk in $@; do
	if ! grep "($dsk)" "${outfile}" >/dev/null
	then
	    echo "($dsk): disk/partiton not found"
	    exit 1
	fi
    done
}

list_parts () {
    mod=$1;
    shift;
    imgfile="$1"
    shift
    outfile="$1"
    shift

    echo ls | "${grubshell}" --disk="${imgfile}" \
	--modules=$mod | tr -d "\n\r" > "${outfile}"
    cat "${outfile}"
    echo
}

case "${grub_modinfo_target_cpu}-${grub_modinfo_platform}" in
    mips-qemu_mips | mipsel-qemu_mips | i386-qemu | i386-multiboot | i386-coreboot | mipsel-loongson)
	disk=ata0
	;;
    powerpc-ieee1275)
	disk=ieee1275//pci@80000000/mac-io@4/ata-3@20000/disk@0
	# FIXME: QEMU firmware has bugs which prevent it from accessing hard disk w/o recognised label.
	exit 0
	;;
    sparc64-ieee1275)
	disk=ieee1275//pci@1fe\,0/pci-ata@5/ide0@500/disk@0
	# FIXME: QEMU firmware has bugs which prevent it from accessing hard disk w/o recognised label.
	exit 0
	;;
    i386-ieee1275)
	disk=ieee1275/d
	# FIXME: QEMU firmware has bugs which prevent it from accessing hard disk w/o recognised label.
	exit 0
	;;
    mips-arc)
	# FIXME: ARC firmware has bugs which prevent it from accessing hard disk w/o dvh disklabel.
	exit 0 ;;
    mipsel-arc)
	disk=arc/scsi0/disk0/rdisk0
	;;
    *)
	disk=hd0
	;;
esac
imgfile="`mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"`" || exit 1
outfile="`mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"`" || exit 1

#
# MSDOS partition types
#

echo "Checking MSDOS partition types..."

# 0 primary
create_disk_image "${imgfile}" 64
${parted} -a none -s "${imgfile}" mklabel msdos
list_parts part_msdos "${imgfile}" "${outfile}"
check_output "${outfile}" $disk

# 1 primary
create_disk_image "${imgfile}" 64
${parted} -a none -s "${imgfile}" mklabel msdos mkpart primary 0 10M 
list_parts part_msdos "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,msdos1

# 2 primary
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel msdos mkpart primary 0 10M mkpart primary 10M 20M
list_parts part_msdos "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,msdos1 $disk,msdos2

# 3 primary
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel msdos mkpart primary 0 10M mkpart primary 10M 20M mkpart primary 20M 30M
list_parts part_msdos "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,msdos1 $disk,msdos2 $disk,msdos3

# 4 primary
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel msdos mkpart primary 0 10M mkpart primary 10M 20M mkpart primary 20M 30M mkpart primary 30M 40M
list_parts part_msdos "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,msdos1 $disk,msdos2 $disk,msdos3 $disk,msdos4

# 1 primary, 1 extended
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel msdos mkpart primary 0 10M mkpart primary 10M 20M mkpart extended 20M 100%
list_parts part_msdos "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,msdos1

# 1 primary, 1 extended, 1 logical
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel msdos mkpart primary 0 10M mkpart primary 10M 20M mkpart extended 20M 100% mkpart logical 20M 30M
list_parts part_msdos "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,msdos1 $disk,msdos5

# 1 primary, 1 extended, 2 logical
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel msdos mkpart primary 0 10M mkpart primary 10M 20M mkpart extended 20M 100% mkpart logical 20M 30M mkpart logical 30M 40M
list_parts part_msdos "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,msdos1 $disk,msdos5 $disk,msdos6

# 1 primary, 1 extended, 3 logical
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel msdos mkpart primary 0 10M mkpart primary 10M 20M mkpart extended 20M 100% mkpart logical 20M 30M mkpart logical 30M 40M mkpart logical 40M 50M
list_parts part_msdos "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,msdos1 $disk,msdos5 $disk,msdos6 $disk,msdos7

# 1 primary, 1 extended, 4 logical
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel msdos mkpart primary 0 10M mkpart primary 10M 20M mkpart extended 20M 100% mkpart logical 20M 30M mkpart logical 30M 40M mkpart logical 40M 50M mkpart logical 50M 60M
list_parts part_msdos "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,msdos1 $disk,msdos5 $disk,msdos6 $disk,msdos7 $disk,msdos8


#
# GPT partition types
#

echo "Checking GPT partition types..."

# 0 parts
create_disk_image "${imgfile}" 64
${parted} -a none -s "${imgfile}" mklabel gpt
list_parts part_gpt "${imgfile}" "${outfile}"
check_output "${outfile}" $disk

# 1 parts
create_disk_image "${imgfile}" 64
${parted} -a none -s "${imgfile}" mklabel gpt mkpart 1 0 10M 
list_parts part_gpt "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,gpt1

# 2 parts
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel gpt mkpart 1 0 10M mkpart 2 10M 20M
list_parts part_gpt "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,gpt1 $disk,gpt2

# 3 parts
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel gpt mkpart 1 0 10M mkpart 2 10M 20M mkpart 3 20M 30M
list_parts part_gpt "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,gpt1 $disk,gpt2 $disk,gpt3

# 4 parts
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel gpt mkpart 1 0 10M mkpart 2 10M 20M mkpart 4 20M 30M mkpart 5 30M 40M
list_parts part_gpt "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,gpt1 $disk,gpt2 $disk,gpt3 $disk,gpt4

# 5 parts
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel gpt mkpart 1 0 10M mkpart 2 10M 20M mkpart 3 20M 30M mkpart 4 30M 40M mkpart 5 40M 50M
list_parts part_gpt "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,gpt1 $disk,gpt2 $disk,gpt3 $disk,gpt4 $disk,gpt5

# 6 parts
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel gpt mkpart 1 0 10M mkpart 2 10M 20M mkpart 3 20M 30M mkpart 4 30M 40M mkpart 5 40M 50M mkpart 6 50M 60M
list_parts part_gpt "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,gpt1 $disk,gpt2 $disk,gpt3 $disk,gpt4 $disk,gpt5 $disk,gpt6


#
# SUN partition types
#
# It seems partition #3 is reserved for whole disk by parted.
#

echo "Checking SUN partition types..."

# 0 parts
create_disk_image "${imgfile}" 64
${parted} -a none -s "${imgfile}" mklabel sun
list_parts part_sun "${imgfile}" "${outfile}"
check_output "${outfile}" $disk

# 1 parts
create_disk_image "${imgfile}" 64
${parted} -a none -s "${imgfile}" mklabel sun mkpart 0 10M 
list_parts part_sun "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,sun1

# 2 parts
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel sun mkpart 0 10M mkpart 10M 20M
list_parts part_sun "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,sun1 $disk,sun2

# 3 parts
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel sun mkpart 0 10M mkpart 10M 20M mkpart 20M 30M
list_parts part_sun "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,sun1 $disk,sun2 $disk,sun4

# 4 parts
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel sun mkpart 0 10M mkpart 10M 20M mkpart 20M 30M mkpart 30M 40M
list_parts part_sun "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,sun1 $disk,sun2 $disk,sun4 $disk,sun5

# 5 parts
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel sun mkpart 0 10M mkpart 10M 20M mkpart 20M 30M mkpart 30M 40M mkpart 40M 50M
list_parts part_sun "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,sun1 $disk,sun2 $disk,sun4 $disk,sun5 $disk,sun6

# 6 parts
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel sun mkpart 0 10M mkpart 10M 20M mkpart 20M 30M mkpart 30M 40M mkpart 40M 50M mkpart 50M 60M
list_parts part_sun "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,sun1 $disk,sun2 $disk,sun4 $disk,sun5 $disk,sun6 $disk,sun7


#
# Apple partition types
#
# Partition table itself is part of some partition, so there is always
# a partition by default.  But I don't understand why GRUB displays
# two partitions by default :-(
#

echo "Checking APPLE partition types..."

# 0 parts
create_disk_image "${imgfile}" 64
${parted} -a none -s "${imgfile}" mklabel mac
list_parts part_apple "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,apple1 $disk,apple2

# 1 parts
create_disk_image "${imgfile}" 64
${parted} -a none -s "${imgfile}" mklabel mac mkpart a 1M 10M
list_parts part_apple "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,apple1 $disk,apple2 $disk,apple3

# 2 parts
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel mac mkpart a 1M 10M mkpart b 10M 20M
list_parts part_apple "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,apple1 $disk,apple2 $disk,apple3 $disk,apple4

# 3 parts
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel mac mkpart a 1M 10M mkpart b 10M 20M mkpart c 20M 30M
list_parts part_apple "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,apple1 $disk,apple2 $disk,apple4 $disk,apple5

# 4 parts
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel mac mkpart a 1M 10M mkpart b 10M 20M mkpart c 20M 30M mkpart d 30M 40M
list_parts part_apple "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,apple1 $disk,apple2 $disk,apple4 $disk,apple5 $disk,apple6

# 5 parts
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel mac mkpart a 1M 10M mkpart b 10M 20M mkpart c 20M 30M mkpart d 30M 40M mkpart e 40M 50M
list_parts part_apple "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,apple1 $disk,apple2 $disk,apple4 $disk,apple5 $disk,apple6 $disk,apple7

# 6 parts
create_disk_image "${imgfile}" 128
${parted} -a none -s "${imgfile}" mklabel mac mkpart a 1M 10M mkpart b 10M 20M mkpart c 20M 30M mkpart d 30M 40M mkpart e 40M 50M mkpart f 50M 60M
list_parts part_apple "${imgfile}" "${outfile}"
check_output "${outfile}" $disk $disk,apple1 $disk,apple2 $disk,apple4 $disk,apple5 $disk,apple6 $disk,apple7 $disk,apple8