g Move 2: partition table: hierarchy

8 files changed, 1382 insertions, 0 deletions

diff --git a/perl-install/partition_table/bsd.pm b/perl-install/partition_table/bsd.pm
new file mode 100644
index 000000000..431d17f1f
--- /dev/null
+++ b/perl-install/partition_table/bsd.pm
@@ -0,0 +1,147 @@
+package partition_table::bsd; # $Id$
+
+use diagnostics;
+use strict;
+use vars qw(@ISA);
+
+@ISA = qw(partition_table::raw);
+
+use common;
+use partition_table::raw;
+use partition_table;
+use c;
+
+#- very bad and rough handling :(
+my %typeToDos = (
+  8 => 0x83,
+  1 => 0x82,
+);
+my %typeFromDos = reverse %typeToDos;
+
+my ($main_format, $main_fields) = list2kv(
+  I   => 'magic',
+  S   => 'type',
+  S   => 'subtype',
+  a16 => 'typename',
+  a16 => 'packname',
+  I   => 'secsize',
+  I   => 'nsectors',
+  I   => 'ntracks',
+  I   => 'ncylinders',
+  I   => 'secpercyl',
+  I   => 'secprtunit',
+  S   => 'sparespertrack',
+  S   => 'sparespercyl',
+  I   => 'acylinders',
+  S   => 'rpm',
+  S   => 'interleave',
+  S   => 'trackskew',
+  S   => 'cylskew',
+  I   => 'headswitch',
+  I   => 'trkseek',
+  I   => 'flags',
+  a20 => 'drivedata',
+  a20 => 'spare',
+  I   => 'magic2',
+  S   => 'checksum',
+  S   => 'npartitions',
+  I   => 'bbsize',
+  I   => 'sbsize',
+  a128=> 'partitions',
+  a236=> 'blank',
+);
+$main_format = join '', @$main_format;
+
+my @fields = qw(size start fsize type frag cpg);
+my $format = "I I I C C S";
+my $magic = 0x82564557;
+my $nb_primary = 8;
+my $offset = 0x40;
+
+sub read($$) {
+    my ($hd, $sector) = @_;
+    my $tmp;
+
+    local *F; partition_table::raw::openit($hd, *F) or die "failed to open device";
+    c::lseek_sector(fileno(F), $sector, $offset) or die "reading of partition in sector $sector failed";
+
+    sysread F, $tmp, psizeof($main_format) or die "error while reading partition table in sector $sector";
+    my %info; @info{@$main_fields} = unpack $main_format, $tmp;
+
+    #- TODO verify checksum
+
+    my $size = psizeof($format);
+    my @pt = map {
+	my %h; @h{@fields} = unpack $format, $_;
+	$h{type} = $typeToDos{$h{type}} || $h{type};
+	\%h;
+    } $info{partitions} =~ /(.{$size})/g;
+
+    #- check magic number
+    $info{magic}  == $magic or die "bad magic number on disk $hd->{device}";
+    $info{magic2} == $magic or die "bad magic number on disk $hd->{device}";
+
+    [ @pt ], \%info;
+}
+
+# write the partition table (and extended ones)
+# for each entry, it uses fields: start, size, type, active
+sub write($$$;$) {
+    my ($hd, $sector, $pt, $info) = @_;
+
+    #- handle testing for writing partition table on file only!
+    local *F;
+    if ($::testing) {
+	my $file = "/tmp/partition_table_$hd->{device}";
+	open F, ">$file" or die "error opening test file $file";
+    } else {
+	partition_table::raw::openit($hd, *F, 2) or die "error opening device $hd->{device} for writing";
+        c::lseek_sector(fileno(F), $sector, $offset) or return 0;
+    }
+
+    #- TODO compute checksum
+
+    $info->{npartitions} = $nb_primary; #- is it ok?
+
+    @$pt == $nb_primary or die "partition table does not have $nb_primary entries";
+    $info->{partitions} = join '', map {
+	local $_->{type} = $typeFromDos{$_->{type}} || $_->{type};
+	pack $format, @$_{@fields};
+    } @$pt;
+
+    syswrite F, pack($main_format, @$info{@$main_fields}), psizeof($main_format) or return 0;
+    1;
+}
+
+sub info {
+    my ($hd) = @_;
+    my $dtype_scsi  = 4; #- taken from fdisk, removed unused one,
+    my $dtype_ST506 = 6; #- see fdisk for more
+
+    {
+      magic => $magic,
+      magic2 => $magic,
+      dtype => $hd->{device} =~ /^sd/ ? $dtype_scsi : $dtype_ST506,
+      secsize => $common::SECTORSIZE,
+      ncylinders => $hd->{geom}{cylinders},
+      secpercyl => $hd->cylinder_size(),
+      secprtunit => $hd->{geom}{totalsectors},
+      rpm => 3600,
+      interleave => 1,
+      trackskew => 0,
+      cylskew => 0,
+      headswitch => 0,
+      trkseek => 0,
+      bbsize => 8192, #- size of boot area, with label
+      sbsize => 8192, #- max size of fs superblock
+    };
+}
+
+sub clear_raw {
+    my ($hd) = @_;
+    { raw => [ ({}) x $nb_primary ], info => info($hd) };
+}
+
+sub first_usable_sector { 2048 }
+
+1;
diff --git a/perl-install/partition_table/dos.pm b/perl-install/partition_table/dos.pm
new file mode 100644
index 000000000..a6ad4be76
--- /dev/null
+++ b/perl-install/partition_table/dos.pm
@@ -0,0 +1,99 @@
+package partition_table::dos; # $Id$
+
+use diagnostics;
+use strict;
+use vars qw(@ISA);
+
+@ISA = qw(partition_table::raw);
+
+use common;
+use partition_table::raw;
+use partition_table;
+use c;
+
+my @fields = qw(active start_head start_sec start_cyl type end_head end_sec end_cyl start size);
+my $format = "C8 V2";
+my $magic = "\x55\xAA";
+my $nb_primary = 4;
+
+my $offset = $common::SECTORSIZE - length($magic) - $nb_primary * common::psizeof($format);
+
+sub hasExtended { 1 }
+
+sub compute_CHS($$) {
+    my ($hd, $e) = @_;
+    my @l = qw(cyl head sec);
+    @$e{map { "start_$_" } @l} = $e->{start} || $e->{type} ? CHS2rawCHS($hd, sector2CHS($hd, $e->{start})) : (0,0,0);
+    @$e{map { "end_$_"   } @l} = $e->{start} || $e->{type} ? CHS2rawCHS($hd, sector2CHS($hd, $e->{start} + $e->{size} - 1)) : (0,0,0);
+    1;
+}
+
+sub CHS2rawCHS {
+    my ($hd, $c, $h, $s) = @_;
+    if ($c > 1023) {
+	#- no way to have a #cylinder >= 1024
+	$c = 1023;
+	$h = $hd->{geom}{heads} - 1;
+	$s = $hd->{geom}{sectors};
+    }
+    ($c & 0xff, $h, $s | ($c >> 2 & 0xc0));
+}
+
+# returns (cylinder, head, sector)
+sub sector2CHS {
+    my ($hd, $start) = @_;
+    my ($s, $h);
+    ($start, $s) = divide($start, $hd->{geom}{sectors});
+    ($start, $h) = divide($start, $hd->{geom}{heads});
+    ($start, $h, $s + 1);
+}
+
+sub read {
+    my ($hd, $sector) = @_;
+    my $tmp;
+
+    local *F; partition_table::raw::openit($hd, *F) or die "failed to open device";
+    c::lseek_sector(fileno(F), $sector, $offset) or die "reading of partition in sector $sector failed";
+
+    my @pt = map {
+	sysread F, $tmp, psizeof($format) or die "error while reading partition table in sector $sector";
+	my %h; @h{@fields} = unpack $format, $tmp;
+	\%h;
+    } (1..$nb_primary);
+
+    #- check magic number
+    sysread F, $tmp, length $magic or die "error reading magic number on disk $hd->{device}";
+    $tmp eq $magic or die "bad magic number on disk $hd->{device}";
+
+    [ @pt ];
+}
+
+# write the partition table (and extended ones)
+# for each entry, it uses fields: start, size, type, active
+sub write($$$;$) {
+    my ($hd, $sector, $pt) = @_;
+
+    #- handle testing for writing partition table on file only!
+    local *F;
+    if ($::testing) {
+	my $file = "/tmp/partition_table_$hd->{device}";
+	open F, ">$file" or die "error opening test file $file";
+    } else {
+	partition_table::raw::openit($hd, *F, 2) or die "error opening device $hd->{device} for writing";
+        c::lseek_sector(fileno(F), $sector, $offset) or return 0;
+    }
+
+    @$pt == $nb_primary or die "partition table does not have $nb_primary entries";
+    foreach (@$pt) {
+	compute_CHS($hd, $_);
+	local $_->{start} = $_->{local_start} || 0;
+	$_->{active} ||= 0; $_->{type} ||= 0; $_->{size} ||= 0; #- for no warning
+	syswrite F, pack($format, @$_{@fields}), psizeof($format) or return 0;
+    }
+    syswrite F, $magic, length $magic or return 0;
+    1;
+}
+
+sub clear_raw { { raw => [ ({}) x $nb_primary ] } }
+
+1;
diff --git a/perl-install/partition_table/empty.pm b/perl-install/partition_table/empty.pm
new file mode 100644
index 000000000..e90991684
--- /dev/null
+++ b/perl-install/partition_table/empty.pm
@@ -0,0 +1,36 @@
+package partition_table::empty; # $Id$
+
+#- this is a mainly dummy partition table. If we find it's empty, we just call -
+#- zero_MBR which will take care of bless'ing us to the partition table type best
+#- suited
+
+
+use diagnostics;
+use strict;
+use vars qw(@ISA);
+
+@ISA = qw(partition_table::raw);
+
+use common;
+use partition_table::raw;
+use partition_table;
+use c;
+
+
+sub read($$) {
+    my ($hd, $sector) = @_;
+    my $tmp;
+
+    local *F; partition_table::raw::openit($hd, *F) or die "failed to open device";
+    c::lseek_sector(fileno(F), $sector, 0) or die "reading of partition in sector $sector failed";
+
+    #- check magic number
+    sysread F, $tmp, 512 or die "error reading magic number on disk $hd->{device}";
+    $tmp eq substr($tmp, 0, 1) x 512 or die "bad magic number on disk $hd->{device}";
+
+    partition_table::raw::zero_MBR($hd);
+
+    $hd->{primary}{raw};
+}
+
+1;
diff --git a/perl-install/partition_table/gpt.pm b/perl-install/partition_table/gpt.pm
new file mode 100644
index 000000000..01de8f8a7
--- /dev/null
+++ b/perl-install/partition_table/gpt.pm
@@ -0,0 +1,266 @@
+package partition_table::gpt; # $Id$
+
+use diagnostics;
+use strict;
+use vars qw(@ISA);
+
+@ISA = qw(partition_table::raw);
+
+use common;
+use partition_table::raw;
+use partition_table::dos;
+use partition_table;
+use c;
+
+my %gpt_types = (
+  0x00 => "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
+  0x82 => "\x6d\xfd\x57\x06\xab\xa4\xc4\x43\x84\xe5\x09\x33\xc8\x4b\x4f\x4f",
+  0x83 => "\xA2\xA0\xD0\xEB\xE5\xB9\x33\x44\x87\xC0\x68\xB6\xB7\x26\x99\xC7",
+  0x8e => "\x79\xd3\xd6\xe6\x07\xf5\xc2\x44\xa2\x3c\x23\x8f\x2a\x3d\xf9\x28",
+  0xfd => "\x0f\x88\x9d\xa1\xfc\x05\x3b\x4d\xa0\x06\x74\x3f\x0f\x84\x91\x1e",
+  0xef => "\x28\x73\x2A\xC1\x1F\xF8\xd2\x11\xBA\x4B\x00\xA0\xC9\x3E\xC9\x3B",
+  # legacy_partition_table => "\x41\xEE\x4D\x02\xE7\x33\xd3\x11\x9D\x69\x00\x08\xC7\x81\xF3\x9F"
+  # PARTITION_MSFT_RESERVED_GUID "\x16\xE3\xC9\xE3\x5C\x0B\xB8\x4D\x81\x7D\xF9\x2D\xF0\x02\x15\xAE"
+  #PARTITION_RESERVED_GUID "\x39\x33\xa6\x8d\x07\x00\xc0\x60\xc4\x36\x08\x3a\xc8\x23\x09\x08"
+);
+
+my $current_revision = 0x00010200;
+my ($main_format, $main_fields) = list2kv(
+  a8    => 'magic',
+  V     => 'revision',
+  V     => 'headerSize',
+  V     => 'headerCRC32',
+  a4    => 'blank1',
+  Q     => 'myLBA',
+  Q     => 'alternateLBA',
+  Q     => 'firstUsableLBA',
+  Q     => 'lastUsableLBA',
+  a16   => 'guid',
+  Q     => 'partitionEntriesLBA',
+  V     => 'nbPartitions',
+  V     => 'partitionEntrySize',
+  V     => 'partitionEntriesCRC32',
+);
+
+my ($partitionEntry_format, $partitionEntry_fields) = list2kv(
+  a16   => 'gpt_type',
+  a16   => 'guid',
+  Q     => 'start',
+  Q     => 'ending',
+  a8    => 'efi_attributes',
+  a72   => 'name',
+);
+
+my ($guid_format, $guid_fields) = list2kv(
+  N     => 'time_low',
+  n     => 'time_mid',
+  n     => 'time_hi_and_version',
+  n     => 'clock_seq',
+  a6    => 'node',
+);
+
+$_ = join('', @$_) foreach $main_format, $partitionEntry_format, $guid_format;
+
+my $magic = "EFI PART";
+
+sub generate_guid {
+    my $tmp;
+    local *F;
+    open F, devices::make("random") or die "Could not open /dev/random for GUID generation";
+    read F, $tmp, psizeof($guid_format);
+	
+    my %guid; @guid{@$guid_fields} = unpack $guid_format, $tmp;
+    $guid{clock_seq} = ($guid{clock_seq} & 0x3fff) | 0x8000;
+    $guid{time_hi_and_version} = ($guid{time_hi_and_version} & 0x0fff) | 0x4000;
+    pack($guid_format, @guid{@$guid_fields});
+}
+
+sub crc32 {
+    my ($buffer) = @_;
+
+    my $crc = 0xFFFFFFFF;
+    foreach (unpack "C*", $buffer) {
+	my $subcrc = ($crc ^ $_) & 0xFF;
+        for (my $j = 8; $j > 0; $j--){
+	    my $b = $subcrc & 1;
+	    $subcrc = ($subcrc >> 1) & 0x7FFFFFFF;
+	    $subcrc = $subcrc ^ 0xEDB88320 if $b;
+        }
+        $crc = ($crc >> 8) ^ $subcrc;
+    }
+    $crc ^ 0xFFFFFFFF;
+}
+
+sub compute_headerCRC32 {
+    my ($info) = @_;
+    local $info->{headerCRC32} = 0;
+    crc32(pack($main_format, @$info{@$main_fields}));
+}
+
+sub read_header {
+    my ($sector, $F) = @_;
+    my $tmp;
+
+    c::lseek_sector(fileno($F), $sector, 0) or die "reading of partition in sector $sector failed";
+
+    sysread $F, $tmp, psizeof($main_format) or die "error while reading partition table in sector $sector";
+    my %info; @info{@$main_fields} = unpack $main_format, $tmp;
+    
+    $info{magic} eq $magic or die "bad magic number on disk $hd->{device}";
+    $info{myLBA} == $sector or die "myLBA is not the same";
+    $info{headerSize} == psizeof($main_format) or die "bad partition table header size";
+    $info{partitionEntrySize} == psizeof($partitionEntry_format) or die "bad partitionEntrySize";
+    $info{revision} <= $current_revision or log::l("oops, this is a new GPT revision ($info{revision} > $current_revision)");
+
+    $info{headerCRC32} == compute_headerCRC32(\%info) or die "bad partition table checksum";
+    \%info
+}
+
+sub read_partitionEntries {
+    my ($info, $F) = @_;
+    my $tmp;
+
+    c::lseek_sector(fileno($F), $info->{partitionEntriesLBA}, 0) or die "can't seek to sector partitionEntriesLBA";
+    sysread $F, $tmp, psizeof($partitionEntry_format) * $info->{nbPartitions} or die "error while reading partition table in sector $info->{partitionEntriesLBA}";
+    $info->{partitionEntriesCRC32} == crc32($tmp) or die "bad partition entries checksum";
+
+    c::lseek_sector(fileno($F), $info->{partitionEntriesLBA}, 0) or die "can't seek to sector partitionEntriesLBA";
+    my %gpt_types_rev = reverse %gpt_types;
+    my @pt = 
+      map {
+	sysread $F, $tmp, psizeof($partitionEntry_format) or die "error while reading partition table in sector $info->{partitionEntriesLBA}";
+	my %h; @h{@$partitionEntry_fields} = unpack $partitionEntry_format, $tmp;
+	$h{size} = $h{ending} - $h{start} + 1;
+	$h{type} = $gpt_types_rev{$h{gpt_type}};
+	$h{type} = 0x100 if !defined $h{type};
+	\%h;
+    } (1 .. $info->{nbPartitions});
+    \@pt;
+}
+
+sub read {
+    my ($hd, $sector) = @_;
+    my $tmp;
+
+    my $l = partition_table::dos::read($hd, $sector);
+    my @l = grep { $_->{size} && $_->{type} && !partition_table::isExtended($_) } @$l;
+    @l == 1 or die "bad PMBR";
+    $l[0]{type} == 0xee or die "bad PMBR";
+    my $myLBA = $l[0]{start};
+
+    local *F; partition_table::raw::openit($hd, *F) or die "failed to open device";
+    my $info1 = eval { read_header($myLBA, *F) };
+    my $info2 = eval { read_header($info1->{alternateLBA} || $l[0]{start} + $l[0]{size} - 1, *F) }; #- what about using $hd->{totalsectors} ???
+    my $info = $info1 || { %$info2, myLBA => $info2->{alternateLBA}, alternateLBA => $info2->{myLBA}, partitionEntriesLBA => $info2->{alternateLBA} + 1 } or die;
+    my $pt = $info1 && $info2 ? 
+	eval { $info1 && read_partitionEntries($info1, *F) } || read_partitionEntries($info2, *F) :
+	read_partitionEntries($info, *F);
+    $hd->raw_removed($pt);
+
+    $pt, $info;
+}
+
+# write the partition table (and extended ones)
+# for each entry, it uses fields: start, size, type, active
+sub write {
+    my ($hd, $sector, $pt, $info) = @_;
+
+    foreach (@$pt) {
+	$_->{ending} = $_->{start} + $_->{size} - 1;
+	$_->{guid} ||= generate_guid;
+	$_->{gpt_type} = $gpt_types{$_->{type}} || $_->{gpt_type} || $gpt_types{0x83};
+    }
+    my $partitionEntries = join('', map {
+	pack($partitionEntry_format, @$_{@$partitionEntry_fields})	
+    } (@$pt, ({}) x ($info->{nbPartitions} - @$pt)));
+
+    $info->{partitionEntriesCRC32} = crc32($partitionEntries);
+    $info->{headerCRC32} = compute_headerCRC32($info);
+
+    my $info2 = { %$info, 
+		  myLBA => $info->{alternateLBA}, alternateLBA => $info->{myLBA}, 
+		  partitionEntriesLBA => $info->{alternateLBA} - psizeof($partitionEntry_format) * $info->{nbPartitions} / 512,
+		};
+    $info2->{headerCRC32} = compute_headerCRC32($info2);
+
+    {
+	# write the PMBR
+	my $pmbr = partition_table::dos::clear_raw();
+	$pmbr->{raw}[0] = { type => 0xee, local_start => $info->{myLBA}, size => $info->{alternateLBA} - $info->{myLBA} + 1 };
+	partition_table::dos::write($hd, $sector, $pmbr->{raw});
+    }
+
+    local *F;
+    partition_table::raw::openit($hd, *F, 2) or die "error opening device $hd->{device} for writing";
+    
+    c::lseek_sector(fileno(F), $info->{myLBA}, 0) or return 0;
+    #- pad with 0's
+    syswrite F, pack($main_format, @$info{@$main_fields}) . "\0" x 512, 512 or return 0;
+
+    c::lseek_sector(fileno(F), $info->{alternateLBA}, 0) or return 0;
+    #- pad with 0's
+    syswrite F, pack($main_format, @$info2{@$main_fields}) . "\0" x 512, 512 or return 0;
+
+    c::lseek_sector(fileno(F), $info->{partitionEntriesLBA}, 0) or return 0;
+    syswrite F, $partitionEntries or return 0;
+    
+    c::lseek_sector(fileno(F), $info2->{partitionEntriesLBA}, 0) or return 0;
+    syswrite F, $partitionEntries or return 0;
+
+    common::sync();
+    1;
+}
+
+sub raw_removed {
+    my ($hd, $raw) = @_;
+    @$raw = grep { $_->{size} && $_->{type} } @$raw;
+}
+sub can_raw_add {
+    my ($hd) = @_;
+    @{$hd->{primary}{raw}} < $hd->{primary}{info}{nbPartitions};
+}
+sub raw_add {
+    my ($hd, $raw, $part) = @_;
+    $hd->can_raw_add or die "raw_add: partition table already full";
+    push @$raw, $part;
+}
+
+sub adjustStart {}
+sub adjustEnd {}
+
+sub first_usable_sector {
+    my ($hd) = @_;
+    $hd->{primary}{info}{firstUsableLBA};
+}
+sub last_usable_sector { 
+    my ($hd) = @_;
+    $hd->{primary}{info}{lastUsableLBA} + 1;
+}
+
+sub info {
+    my ($hd) = @_;
+    my $nb_sect = 32;
+
+    #- build a default suitable partition table,
+    #- checksum will be built when writing on disk.
+    {
+	magic => $magic,
+	revision => $current_revision,
+	headerSize => psizeof($main_format),
+	myLBA => 1,
+	alternateLBA => $hd->{totalsectors} - 1,
+	firstUsableLBA => $nb_sect + 2,
+	lastUsableLBA => $hd->{totalsectors} - $nb_sect - 2,
+	guid => generate_guid,
+	partitionEntriesLBA => 2,
+	nbPartitions => $nb_sect * 512 / psizeof($partitionEntry_format),
+	partitionEntrySize => psizeof($partitionEntry_format),
+    };
+}
+
+sub clear_raw {
+    my ($hd) = @_;
+    { raw => [], info => info($hd) };
+}
+
+1;
diff --git a/perl-install/partition_table/lvm_PV.pm b/perl-install/partition_table/lvm_PV.pm
new file mode 100644
index 000000000..4a55d3810
--- /dev/null
+++ b/perl-install/partition_table/lvm_PV.pm
@@ -0,0 +1,43 @@
+package partition_table::lvm; # $Id$
+
+use diagnostics;
+use strict;
+
+our @ISA = qw(partition_table::raw);
+
+use partition_table::raw;
+use c;
+
+my $magic = "HM\1\0";
+my $offset = 0;
+
+
+#- Allows people having PVs on unpartitioned disks to install
+#- (but no way to create such beasts)
+#-
+#- another way to handle them would be to ignore those disks,
+#- but this would make those hds unshown in diskdrake,
+#- disallowing to zero_MBR, clearing this PV
+
+
+sub read {
+    my ($hd, $sector) = @_;
+
+    local *F; partition_table::raw::openit($hd, *F) or die "failed to open device";
+    c::lseek_sector(fileno(F), $sector, $offset) or die "reading of partition in sector $sector failed";
+
+    sysread F, my $tmp, length $magic or die "error reading magic number on disk $hd->{file}";
+    $tmp eq $magic or die "bad magic number on disk $hd->{file}";
+
+    [ ];
+}
+
+sub write { 
+    die "ERROR: should not be writing raw disk lvm PV!!";
+}
+
+sub clear_raw {
+    die "ERROR: should not be creating new raw disk lvm PV!!";
+}
+
+1;
diff --git a/perl-install/partition_table/mac.pm b/perl-install/partition_table/mac.pm
new file mode 100644
index 000000000..89fb9ceaf
--- /dev/null
+++ b/perl-install/partition_table/mac.pm
@@ -0,0 +1,398 @@
+package partition_table::mac; # $Id$
+
+use diagnostics;
+#use strict;   - fixed other PPC code to comply, but program bails on empty partition table - sbenedict
+use vars qw(@ISA $freepart_device $bootstrap_part $freepart_start $freepart_size $freepart_part $macos_part);
+
+@ISA = qw(partition_table::raw);
+
+use common;
+use partition_table::raw;
+use partition_table;
+use c;
+
+my %typeToDos = (
+  "Apple_partition_map" => 0x401,
+  "Apple_Bootstrap"	=> 0x401,
+  "Apple_Driver43"	=> 0x401,
+  "Apple_Driver_IOKit"	=> 0x401,
+  "Apple_Patches"	=> 0x401,
+  "Apple_HFS"		=> 0x402,
+  "Apple_UNIX_SVR2"	=> 0x83,
+  "Apple_UNIX_SVR2"     => 0x183,
+  "Apple_UNIX_SVR2"     => 0x283,
+  "Apple_UNIX_SVR2"     => 0x383,
+  "Apple_UNIX_SVR2"     => 0x483,
+  "Apple_Free"		=> 0x0,
+);
+my %typeFromDos = reverse %typeToDos;
+
+
+my ($bz_format, $bz_fields) = list2kv(
+  n	=> 'bzSig',
+  n	=> 'bzBlkSize',
+  N	=> 'bzBlkCnt',
+  n	=> 'bzDevType',
+  n	=> 'bzDevID',
+  N	=> 'bzReserved',
+  n	=> 'bzDrvrCnt',
+);
+$bz_format = join '', @$bz_format;
+
+
+my ($dd_format, $dd_fields) = list2kv(
+  N	=> 'ddBlock',
+  n	=> 'ddSize',
+  n	=> 'ddType',
+);
+$dd_format = join '', @$dd_format;
+
+
+my ($p_format, $p_fields) = list2kv(
+  n	=> 'pSig',
+  n	=> 'pSigPad',
+  N	=> 'pMapEntry',
+  N	=> 'pPBlockStart',
+  N	=> 'pPBlocks',
+
+  a32	=> 'pName',
+  a32	=> 'pType',
+
+  N	=> 'pLBlockStart',
+  N	=> 'pLBlocks',
+  N	=> 'pFlags',
+  N	=> 'pBootBlock',
+  N	=> 'pBootBytes',
+
+  N	=> 'pAddrs1',
+  N	=> 'pAddrs2',
+  N	=> 'pAddrs3',
+  N	=> 'pAddrs4',
+  N	=> 'pChecksum',
+
+  a16	=> 'pProcID',
+  a128	=> 'pBootArgs',
+  a248	=> 'pReserved',
+);
+$p_format = join '', @$p_format;
+
+my $magic = 0x4552;
+my $pmagic = 0x504D;
+
+sub first_usable_sector { 1 }
+
+sub adjustStart($$) {
+    my ($hd, $part) = @_;
+    my $end = $part->{start} + $part->{size};
+    my $partmap_end = $hd->{primary}{raw}[0]{size};
+
+    if ($part->{start} <= $partmap_end) {
+        $part->{start} = $partmap_end + 1;
+        $part->{size} = $end - $part->{start};
+    }
+}
+
+sub adjustEnd($$) {
+    my ($hd, $part) = @_;
+}
+
+sub read($$) {
+    my ($hd, $sector) = @_;
+    my $tmp;
+
+    local *F; partition_table::raw::openit($hd, *F) or die "failed to open device";
+    c::lseek_sector(fileno(F), $sector, 0) or die "reading of partition in sector $sector failed";
+
+    sysread F, $tmp, psizeof($bz_format) or die "error while reading bz \(Block Zero\) in sector $sector";
+    my %info; @info{@$bz_fields} = unpack $bz_format, $tmp;
+    my $i;
+
+    foreach $i (0 .. $info{bzDrvrCnt}-1) {
+        sysread F, $tmp, psizeof($dd_format) or die "error while reading driver data in sector $sector";
+        my %dd; @dd{@$dd_fields} = unpack $dd_format, $tmp;
+        push @{$info{ddMap}}, \%dd;
+    }
+
+    #- check magic number
+    $info{bzSig}  == $magic or die "bad magic number on disk $hd->{device}";
+
+    my $numparts;
+    c::lseek_sector(fileno(F), $sector, 516) or die "reading of partition in sector $sector failed";
+    sysread F, $tmp, 4 or die "error while reading partition info in sector $sector";
+    $numparts = unpack "N", $tmp;
+
+    my $partmapsize;
+    c::lseek_sector(fileno(F), $sector, 524) or die "reading of partition in sector $sector failed";
+    sysread F, $tmp, 4 or die "error while reading partition info in sector $sector";
+    $partmapsize = ((unpack "N", $tmp) * $info{bzBlkSize}) / psizeof($p_format);
+
+    c::lseek_sector(fileno(F), $sector, 512) or die "reading of partition in sector $sector failed";
+
+    my @pt;
+    for ($i=0;$i<$partmapsize;$i++) {
+    	my $part;
+        sysread F, $part, psizeof($p_format) or die "error while reading partition info in sector $sector";
+
+        push @pt, map {
+            my %h; @h{@$p_fields} = unpack $p_format, $part;
+            if ($i < $numparts && $h{pSig} eq $pmagic) {
+
+                $h{size} = ($h{pPBlocks} * $info{bzBlkSize}) / 512;
+                $h{start} = ($h{pPBlockStart} * $info{bzBlkSize}) / 512;
+
+                if ($h{pType} =~ /^Apple_UNIX_SVR2/i) {
+                    $h{pName} =~ /swap/i ? ($h{type} = 0x82) : ($h{type} = 0x83);
+                } elsif ($h{pType} =~ /^Apple_Free/i) {
+                	#- need to locate a 1MB partition to setup a bootstrap on
+                	if (defined $freepart_start && $freepart_size >= 1) {
+                		#- already found a suitable partition
+                	} else {
+                		$freepart_start = $h{start};
+                		$freepart_size = $h{size}/2048;
+                		$freepart_device = $hd;
+                		$freepart_part = "/dev/" . $hd->{device} . ($i+1);
+                		log::l("free apple partition found on drive /dev/$freepart_device->{device}, block $freepart_start, size $freepart_size");
+                	}
+			$h{type} = 0x0;
+			$h{pName} = 'Extra';                    
+                } elsif ($h{pType} =~ /^Apple_HFS/i) {
+                 	$h{type} = 0x402;
+                 	if (defined $macos_part) {		
+                 		#- swag at identifying MacOS - 1st HFS partition
+                 	} else {	
+                 		$macos_part = "/dev/" . $hd->{device} . ($i+1);
+                 		log::l("found MacOS at partition $macos_part");
+                 	}
+                } elsif ($h{pType} =~ /^Apple_Partition_Map/i) {
+                 	$h{type} = 0x401;
+                 	$h{isMap} = 1;
+                } elsif ($h{pType} =~ /^Apple_Bootstrap/i) {
+                 	$h{type} = 0x401;
+                 	$h{isBoot} = 1;
+                 	if (defined $bootstrap_part) {
+                 		#found a bootstrap already - use it, but log the find
+                 		log::l("found another apple bootstrap at partition /dev/$hd->{device}" . ($i+1));
+                 	} else {
+                 		$bootstrap_part = "/dev/" . $hd->{device} . ($i+1);
+                 		log::l("found apple bootstrap at partition $bootstrap_part");
+                 	}
+                } else {
+                 	$h{type} = 0x401;
+                     $h{isDriver} = 1;
+                };
+
+                # Let's see if this partition is a driver.
+                foreach (@{$info{ddMap}}) {
+                    $_->{ddBlock} == $h{pPBlockStart} and $h{isDriver} = 1;
+                }
+
+            }
+            \%h;
+        } [ $part ];
+    };
+
+    [ @pt ], \%info;
+}
+
+sub write($$$;$) {
+    my ($hd, $sector, $pt, $info) = @_;
+
+    #- handle testing for writing partition table on file only!
+    local *F;
+    if ($::testing) {
+	my $file = "/tmp/partition_table_$hd->{device}";
+	open F, ">$file" or die "error opening test file $file";
+    } else {
+	partition_table::raw::openit($hd, *F, 2) or die "error opening device $hd->{device} for writing";
+        c::lseek_sector(fileno(F), $sector, 0) or return 0;
+    }
+
+    # Find the partition map.
+    my @partstowrite;
+    my $part = $pt->[0];
+    (defined $part->{isMap}) or die "the first partition is not the partition map";
+    push @partstowrite, $part;
+
+    # Now go thru the partitions, sort and fill gaps.
+    my $last;
+    while ($part) {
+        $last = $part;
+        $part = &partition_table::next($hd, $part);
+        $part or last;
+
+        if ($last->{start} + $last->{size} < $part->{start}) {
+            #There is a gap between partitions.  Fill it and move on.
+            push @partstowrite, {
+                type => 0x0,
+                start => $last->{start} + $last->{size},
+                size => $part->{start} - ($last->{start} + $last->{size}),
+            };
+        }
+        push @partstowrite, $part;
+    };
+
+    # now, fill a gap at the end if there is one.
+    if ($last->{start} + $last->{size} < $hd->{totalsectors}) {
+        push @partstowrite, {
+            type => 0x0,
+            start => $last->{start} + $last->{size},
+            size => $hd->{totalsectors} - ($last->{start} + $last->{size}),
+     	};
+    }
+
+    # Since we didn't create any new drivers, let's try and match up our driver records with out partitons and see if any are missing.
+    $info->{bzDrvrCnt} = 0;
+    my @ddstowrite;
+    my $dd;
+    foreach $dd (@{$info->{ddMap}}) {
+        foreach (@partstowrite) {
+            if ($dd->{ddBlock} == $_->{pPBlockStart}) {
+            	push @ddstowrite, $dd;
+            	$info->{bzDrvrCnt}++;
+            	last;
+            }
+        }
+    }
+
+    # Now let's write our first block.
+    syswrite F, pack($bz_format, @$info{@$bz_fields}), psizeof($bz_format) or return 0;
+
+    # ...and now the driver information.
+    foreach (@ddstowrite) {
+        syswrite F, pack($dd_format, @$_{@$dd_fields}), psizeof($dd_format) or return 0;
+    }
+    # zero the rest of the data in the first block.
+    foreach ( 1 .. (494 - ((@ddstowrite) * 8))) {
+     	syswrite F, "\0", 1 or return 0;
+    }
+    #c::lseek_sector(fileno(F), $sector, 512) or return 0;
+    # Now, we iterate thru the partstowrite and write them.
+    foreach (@partstowrite) {
+        if (!defined $_->{pSig}) {
+            # The values we need to write to disk are not defined.  Let's make them up.
+            $_->{pSig} = $pmagic;
+            $_->{pSigPad} = 0;
+            $_->{pPBlockStart} = ($_->{start} * 512) / $info->{bzBlkSize};
+            $_->{pPBlocks} = ($_->{size} * 512) / $info->{bzBlkSize};
+            $_->{pLBlockStart} = 0;
+            $_->{pLBlocks} = $_->{pPBlocks};
+            $_->{pBootBlock} = 0;
+            $_->{pBootBytes} = 0;
+            $_->{pAddrs1} = 0;
+            $_->{pAddrs2} = 0;
+            $_->{pAddrs3} = 0;
+            $_->{pAddrs4} = 0;
+            $_->{pChecksum} = 0;
+            $_->{pProcID} = "\0";
+            $_->{pBootArgs} = "\0";
+            $_->{pReserved} = "\0";
+
+            if ($_->{type} == 0x402) {
+                $_->{pType} = "Apple_HFS";
+                $_->{pName} = "MacOS";
+                $_->{pFlags} = 0x4000037F;
+            } elsif ($_->{type} == 0x401 && $_->{start} == 1) {
+                $_->{pType} = "Apple_Partition_Map";
+                $_->{pName} = "Apple";
+                $_->{pFlags} = 0x33;
+            } elsif ($_->{type} == 0x401) {
+                $_->{pType} = "Apple_Bootstrap";
+                $_->{pName} = "bootstrap";
+                $_->{pFlags} = 0x33;
+		$_->{isBoot} = 1;
+		log::l("writing a bootstrap at /dev/$_->{device}");
+		$install_steps_interactive::new_bootstrap = 1 if !(defined $partition_table::mac::bootstrap_part);
+		$bootstrap_part = "/dev/" . $_->{device};
+            } elsif ($_->{type} == 0x82) {
+                $_->{pType} = "Apple_UNIX_SVR2";
+                $_->{pName} = "swap";
+                $_->{pFlags} = 0x33;
+            } elsif ($_->{type} == 0x83) {
+                $_->{pType} = "Apple_UNIX_SVR2";
+                $_->{pName} = "Linux Native";
+                $_->{pFlags} = 0x33;
+            } elsif ($_->{type} == 0x183) {
+                $_->{pType} = "Apple_UNIX_SVR2";
+                $_->{pName} = "Linux ReiserFS";
+                $_->{pFlags} = 0x33;
+            } elsif ($_->{type} == 0x283) {
+                $_->{pType} = "Apple_UNIX_SVR2";
+                $_->{pName} = "Linux XFS";
+                $_->{pFlags} = 0x33;
+            } elsif ($_->{type} == 0x383) {
+                $_->{pType} = "Apple_UNIX_SVR2";
+                $_->{pName} = "Linux JFS";
+                $_->{pFlags} = 0x33;
+            } elsif ($_->{type} == 0x483) {
+                $_->{pType} = "Apple_UNIX_SVR2";
+                $_->{pName} = "Linux ext3";
+                $_->{pFlags} = 0x33;
+            } elsif ($_->{type} == 0x0) {
+                $_->{pType} = "Apple_Free";
+                $_->{pName} = "Extra";
+                $_->{pFlags} = 0x31;
+            }
+        };
+        $_->{pMapEntry} = @partstowrite;
+        syswrite F, pack($p_format, @$_{@$p_fields}), psizeof($p_format) or return 0;
+    }
+
+    common::sync();
+
+    1;
+}
+
+sub info {
+    my ($hd) = @_;
+
+    # - Build the first block of the drive.
+
+    my $info = {
+	bzSig => $magic,
+	bzBlkSize => 512,
+	bzBlkCnt => $hd->{totalsectors},
+	bzDevType => 0,
+	bzDevID => 0,
+	bzReserved => 0,
+	bzDrvrCnt => 0,
+    };
+
+    $info;
+}
+
+sub clear_raw {
+    my ($hd) = @_;
+    my @oldraw = @{$hd->{primary}{raw}};
+    my $pt = { raw => [ ({}) x 63 ], info => info($hd) };
+
+    #- handle special case for partition 1 which is the partition map.
+    $pt->{raw}[0] = {
+        type => 0x401,
+        start => 1,
+        size => 63,
+        isMap => 1,
+    };
+#	$pt->{raw}[1] = {
+#		type => 0x0,
+#		start => 64,
+#		size => $hd->{totalsectors} - 64,
+#		isMap => 0,
+#	};
+    push @{$pt->{normal}}, $pt->{raw}[0];
+#	push @{$pt->{normal}}, $pt->{raw}[1];
+
+    #- Recover any Apple Drivers, if any.
+    my $i = 1;
+    foreach (@oldraw) {
+        if (defined $_->{isDriver}) {
+            $pt->{raw}[$i] = $_;
+            push @{$pt->{normal}}, $pt->{raw}[$i];
+            $i++;
+        }
+    };
+    @{$pt->{info}{ddMap}} = @{$hd->{primary}{info}{ddMap}};
+
+    $pt;
+}
+
+1;
diff --git a/perl-install/partition_table/raw.pm b/perl-install/partition_table/raw.pm
new file mode 100644
index 000000000..3be68fe56
--- /dev/null
+++ b/perl-install/partition_table/raw.pm
@@ -0,0 +1,192 @@
+package partition_table::raw; # $Id$
+
+use diagnostics;
+use strict;
+
+use common;
+use devices;
+use detect_devices;
+use log;
+use c;
+
+my @MBR_signatures = (
+if_(arch() =~ /ppc/,
+    map { [ 'yaboot', 0, "PM", 0x200 * $_ + 0x10, "bootstrap\0" ] } 0 .. 61
+),
+    [ 'empty', 0, "\0\0\0\0" ],
+    [ 'grub', 0, "\xEBG", 0x17d, "stage1 \0" ],
+    [ 'grub', 0, "\xEBH", 0x17e, "stage1 \0" ],
+    [ 'grub', 0, "\xEBH", 0x18a, "stage1 \0" ],
+    [ 'grub', 0, "\xEBH", 0x181, "GRUB \0" ],
+    [ 'lilo', 0x2,  "LILO" ],
+    [ 'lilo', 0x6,  "LILO" ],
+    [ 'grub', 0x6,  "GRUB" ],
+    [ 'osbs', 0x2,  "OSBS" ], #- http://www.prz.tu-berlin.de/~wolf/os-bs.html
+    [ 'pqmagic', 0xef, "PQV" ],
+    [ 'BootStar', 0x130, "BootStar:" ],
+    [ 'DocsBoot', 0x148, 'DocsBoot' ],
+    [ 'system_commander', 0x1ad, "SYSCMNDRSYS" ],
+    [ 'Be Os', 0x24, 'Boot Manager' ],
+    [ 'TimO', 0, 'IBM Thinkpad hibernation partition' ],
+    [ 'dos', 0xa0, "\x25\x03\x4E\x02\xCD\x13" ],
+    [ 'dos', 0xa0, "\x00\xB4\x08\xCD\x13\x72" ], #- nt2k's
+    [ 'dos', 0x60, "\xBB\x00\x7C\xB8\x01\x02\x57\xCD\x13\x5F\x73\x0C\x33\xC0\xCD\x13" ], #- nt's
+    [ 'dos', 0x70, "\x0C\x33\xC0\xCD\x13\x4F\x75\xED\xBE\xA3" ],
+    [ 'freebsd', 0xC0, "\x00\x30\xE4\xCD\x16\xCD\x19\xBB\x07\x00\xB4" ],
+    [ 'freebsd', 0x160, "\x6A\x10\x89\xE6\x48\x80\xCC\x40\xCD\x13" ],
+    [ 'dummy', 0xAC, "\x0E\xB3\x07\x56\xCD\x10\x5E\xEB" ], #- caldera?
+    [ 'ranish', 0x100, "\x6A\x10\xB4\x42\x8B\xF4\xCD\x13\x8B\xE5\x73" ],
+    [ 'os2', 0x1c2, "\xA" ],
+);
+
+sub typeOfMBR($) { typeFromMagic(devices::make($_[0]), @MBR_signatures) }
+sub typeOfMBR_($) { typeFromMagic($_[0], @MBR_signatures) }
+
+sub hasExtended { 0 }
+
+sub cylinder_size($) {
+    my ($hd) = @_;
+    $hd->{geom}{sectors} * $hd->{geom}{heads};
+}
+sub first_usable_sector { 1 }
+sub last_usable_sector { 
+    my ($hd) = @_;
+    $hd->{totalsectors};
+}
+
+#- default method for starting a partition, only head size or twice
+#- is allowed for starting a partition after a cylinder boundarie.
+sub adjustStart($$) {
+    my ($hd, $part) = @_;
+    my $end = $part->{start} + $part->{size};
+
+    $part->{start} = round_up($part->{start},
+			      $part->{start} % cylinder_size($hd) < 2 * $hd->{geom}{sectors} ?
+   			      $hd->{geom}{sectors} : cylinder_size($hd));
+    $part->{size} = $end - $part->{start};
+    $part->{size} > 0 or die "adjustStart get a too small partition to handle correctly";
+}
+#- adjusting end to match a cylinder boundary, two methods are used and must
+#- match at the end, else something is wrong and nothing will be done on
+#- partition table.
+#- $end2 is computed by removing 2 (or only 1 if only 2 heads on drive) groups
+#- of sectors, this is necessary to handle extended partition where logical
+#- partition start after 1 (or 2 accepted) groups of sectors (typically 63).
+#- $end is floating (is not on cylinder boudary) so we have to choice a good
+#- candidate, $end1 or $end2 should always be good except $end1 for small
+#- partition size.
+sub adjustEnd($$) {
+    my ($hd, $part) = @_;
+    my $end = $part->{start} + $part->{size};
+    $end > $hd->{geom}{cylinders} * cylinder_size($hd) && $end <= $hd->{totalsectors} and return;
+    my $end1 = round_down($end, cylinder_size($hd));
+    my $end2 = round_up($end - ($hd->{geom}{heads} > 2 ? 2 : 1) * $hd->{geom}{sectors}, cylinder_size($hd));
+    $end2 <= $hd->{geom}{cylinders} * cylinder_size($hd) or die "adjustEnd go beyond end of device geometry ($end2 > $hd->{totalsectors})";
+    $part->{size} = ($end1 - $part->{start} > cylinder_size($hd) ? $end1 : $end2) - $part->{start};
+    $part->{size} > 0 or die "adjustEnd get a too small partition to handle correctly";
+}
+
+sub get_geometry($) {
+    my ($dev) = @_;
+    my $g = "";
+
+    local *F; sysopen F, $dev, 0 or return;
+    ioctl(F, c::HDIO_GETGEO(), $g) or return;
+    my %geom; @geom{qw(heads sectors cylinders start)} = unpack "CCSL", $g;
+    $geom{totalcylinders} = $geom{cylinders};
+
+    my $total;
+    #- $geom{cylinders} is no good (only a ushort, that means less than 2^16 => at best 512MB)
+    if ($total = c::total_sectors(fileno F)) {
+	$geom{cylinders} = int $total / $geom{heads} / $geom{sectors};
+    } else {
+	$total = $geom{heads} * $geom{sectors} * $geom{cylinders}
+    }
+
+    { geom => \%geom, totalsectors => $total };
+}
+
+sub openit($$;$) { sysopen $_[1], $_[0]{file}, $_[2] || 0; }
+
+# cause kernel to re-read partition table
+sub kernel_read($) {
+    my ($hd) = @_;
+    common::sync();
+    local *F; openit($hd, *F) or return 0;
+    common::sync(); sleep(1);
+    $hd->{rebootNeeded} = !ioctl(F, c::BLKRRPART(), 0);
+    common::sync();
+    close F;
+    common::sync(); sleep(1);
+}
+
+sub raw_removed {
+    my ($hd, $raw) = @_;
+}
+sub can_raw_add {
+    my ($hd) = @_;
+    $_->{size} || $_->{type} or return 1 foreach @{$hd->{primary}{raw}};
+    0;
+}
+sub raw_add {
+    my ($hd, $raw, $part) = @_;
+
+    foreach (@$raw) {
+	$_->{size} || $_->{type} and next;
+	$_ = $part;
+	return;
+    }
+    die "raw_add: partition table already full";
+}
+
+sub zero_MBR {
+    my ($hd) = @_;
+    #- force the standard partition type for the architecture
+    my $type = arch() =~ /ia64/ ? 'gpt' : arch() eq "alpha" ? "bsd" : arch() =~ /^sparc/ ? "sun" : arch() eq "ppc" ? "mac" : "dos";
+    #- override standard mac type on PPC for IBM machines to dos
+    $type = "dos" if (arch() =~ /ppc/ && detect_devices::get_mac_model() =~ /^IBM/);
+    require("partition_table/$type.pm");
+    bless $hd, "partition_table::$type";
+    $hd->{primary} = $hd->clear_raw();
+    delete $hd->{extended};
+}
+
+sub zero_MBR_and_dirty {
+    my ($hd) = @_;
+    zero_MBR($hd);
+    $hd->{isDirty} = $hd->{needKernelReread} = 1;
+
+}
+
+#- ugly stuff needed mainly for Western Digital IDE drives
+#- try writing what we've just read, yells if it fails
+#- testing on last sector of head #0 (unused in 99% cases)
+#-
+#- return false if the device can't be written to (especially for Smartmedia)
+sub test_for_bad_drives {
+    my ($hd) = @_;
+
+    log::l("test_for_bad_drives($hd->{file})");
+    my $sector = $hd->{geom}{sectors} - 1;
+    
+
+    local *F; openit($hd, *F, 2) or die "can't open device";
+
+    my $seek = sub {
+	c::lseek_sector(fileno(F), $sector, 0) or die "seeking to sector $sector failed";
+    };
+    my $tmp;
+
+    &$seek; sysread F, $tmp, $SECTORSIZE or die "test_for_bad_drives: can't even read ($!)";
+    &$seek; syswrite F, $tmp or die "test_for_bad_drives: can't even write ($!)";
+
+    my $tmp2;
+    &$seek; sysread F, $tmp2, $SECTORSIZE or die "test_for_bad_drives: can't even read again ($!)";
+    $tmp eq $tmp2 or die
+_("Something bad is happening on your drive. 
+A test to check the integrity of data has failed. 
+It means writing anything on the disk will end up with random trash");
+    1;
+}
+
+1;
diff --git a/perl-install/partition_table/sun.pm b/perl-install/partition_table/sun.pm
new file mode 100644
index 000000000..6944130dc
--- /dev/null
+++ b/perl-install/partition_table/sun.pm
@@ -0,0 +1,201 @@
+package partition_table::sun; # $Id$
+
+use diagnostics;
+use strict;
+use vars qw(@ISA);
+
+@ISA = qw(partition_table::raw);
+
+use common;
+use partition_table::raw;
+use partition_table;
+use c;
+
+my ($main_format, $main_fields) = list2kv(
+  a128  => 'info',
+  a14   => 'spare0',
+  a32   => 'infos',
+  a246  => 'spare1',
+  n     => 'rspeed',
+  n     => 'pcylcount',
+  n     => 'sparecyl',
+  a4    => 'spare2',
+  n     => 'ilfact',
+  n     => 'ncyl',
+  n     => 'nacyl',
+  n     => 'ntrks',
+  n     => 'nsect',
+  a4    => 'spare3',
+  a64   => 'partitions',
+  n     => 'magic',
+  n     => 'csum',
+);
+$main_format = join '', @$main_format;
+
+my ($fields1, $fields2) = ([ qw(type flags) ], [ qw(start_cylinder size) ]);
+my ($format1, $format2) = ("xCxC", "N2");
+my ($size1, $size2) = map { psizeof($_) } ($format1, $format2);
+my $magic = 0xDABE;
+my $nb_primary = 8;
+my $offset = 0;
+
+sub adjustStart($$) {
+    my ($hd, $part) = @_;
+    my $end = $part->{start} + $part->{size};
+
+    #- since partition must always start on cylinders boundaries on sparc,
+    #- note that if start sector is on the first cylinder, it is adjusted
+    #- to 0 and it is valid, cylinder 0 bug is from bad define for sparc
+    #- compilation of mke2fs combined with a blind kernel...
+    $part->{start} = round_down($part->{start}, $hd->cylinder_size());
+    $part->{size} = $end - $part->{start};
+    $part->{size} = $hd->cylinder_size() if $part->{size} <= 0;
+}
+sub adjustEnd($$) {
+    my ($hd, $part) = @_;
+    my $end = $part->{start} + $part->{size};
+    my $end2 = round_up($end, $hd->cylinder_size());
+    $end2 = $hd->{geom}{cylinders} * $hd->cylinder_size() if $end2 > $hd->{geom}{cylinders} * $hd->cylinder_size();
+    $part->{size} = $end2 - $part->{start};
+}
+
+#- compute crc checksum used for Sun Label partition, expect
+#- $tmp to be the 512 bytes buffer to be read/written to MBR.
+sub compute_crc($) {
+    my ($tmp) = @_;
+    my @l2b = unpack "n256", $tmp;
+    my $crc = 0;
+
+    map { $crc ^= $_ } @l2b;
+
+    $crc;
+}
+
+sub read($$) {
+    my ($hd, $sector) = @_;
+    my $tmp;
+
+    local *F; partition_table::raw::openit($hd, *F) or die "failed to open device";
+    c::lseek_sector(fileno(F), $sector, $offset) or die "reading of partition in sector $sector failed";
+
+    sysread F, $tmp, psizeof($main_format) or die "error while reading partition table in sector $sector";
+    my %info; @info{@$main_fields} = unpack $main_format, $tmp;
+
+    #- check magic number
+    $info{magic}  == $magic or die "bad magic number on disk $hd->{device}";
+
+    #- check crc, csum contains the crc so result should be 0.
+    compute_crc($tmp) == 0 or die "bad checksum";
+
+    @{$hd->{geom}}{qw(cylinders heads sectors)} = @info{qw(ncyl ntrks nsect)};
+
+    my @pt;
+    my @infos_up = unpack $format1 x $nb_primary, $info{infos};
+    my @partitions_up = unpack $format2 x $nb_primary, $info{partitions};
+    for (0..$nb_primary-1) {
+	my $h = { type => $infos_up[2 * $_], flag => $infos_up[1 + 2 * $_],
+		  start_cylinder => $partitions_up[2 * $_], size => $partitions_up[1 + 2 * $_] };
+	$h->{start} = $sector + $h->{start_cylinder} * $hd->cylinder_size();
+	$h->{type} && $h->{size} or $h->{$_} = 0 foreach keys %$h;
+	push @pt, $h;
+    }
+
+#- this code is completely broken by null char inside strings, it gets completely crazy :-)
+#    my @pt = mapn {
+#	my %h; 
+#	@h{@$fields1} = unpack $format1, $_[0];
+#	@h{@$fields2} = unpack $format2, $_[1];
+#	$h{start} = $sector + $h{start_cylinder} * $hd->cylinder_size();
+#	$h{type} && $h{size} or $h{$_} = 0 foreach keys %h;
+#	\%h;
+#    } [ grep { $_ } split /(.{$size1})/o, $info{infos} ], [ grep { $_ } split /(.{$size2})/o, $info{partitions} ];
+
+    [ @pt ], \%info;
+}
+
+# write the partition table (and extended ones)
+# for each entry, it uses fields: start, size, type, active
+sub write($$$;$) {
+    my ($hd, $sector, $pt, $info) = @_;
+#    my ($csize, $wdsize) = (0, 0);
+
+    #- handle testing for writing partition table on file only!
+    local *F;
+    if ($::testing) {
+	my $file = "/tmp/partition_table_$hd->{device}";
+	open F, ">$file" or die "error opening test file $file";
+    } else {
+	partition_table::raw::openit($hd, *F, 2) or die "error opening device $hd->{device} for writing";
+        c::lseek_sector(fileno(F), $sector, $offset) or return 0;
+    }
+
+    ($info->{infos}, $info->{partitions}) = map { join '', @$_ } list2kv map {
+	$_->{start} % $hd->cylinder_size() == 0 or die "partition not at beginning of cylinder";
+#	$csize += $_->{size} if $_->{type} != 5;
+#	$wdsize += $_->{size} if $_->{type} == 5;
+	$_->{flags} |= 0x10 if $_->{mntpoint} eq '/';
+	$_->{flags} |= 0x01 if partition_table::isSwap($_);
+	local $_->{start_cylinder} = $_->{start} / $hd->cylinder_size() - $sector;
+	pack($format1, @$_{@$fields1}), pack($format2, @$_{@$fields2});
+    } @$pt;
+#    $csize == $wdsize or die "partitions are not using whole disk space";
+
+    #- compute the checksum by building the buffer to write and call compute_crc.
+    #- set csum to 0 so compute_crc will give the right csum value.
+    $info->{csum} = 0;
+    $info->{csum} = compute_crc(pack($main_format, @$info{@$main_fields}));
+
+    syswrite F, pack($main_format, @$info{@$main_fields}), psizeof($main_format) or return 0;
+
+    common::sync();
+
+    1;
+}
+
+sub info {
+    my ($hd) = @_;
+
+    #- take care of reduction of the number of cylinders, avoid loop of reduction!
+    unless ($hd->{geom}{totalcylinders} > $hd->{geom}{cylinders}) {
+	$hd->{geom}{totalcylinders} = $hd->{geom}{cylinders};
+	$hd->{geom}{cylinders} -= 2;
+
+	#- rebuild some constants according to number of cylinders.
+	$hd->{totalsectors} = $hd->{geom}{heads} * $hd->{geom}{sectors} * $hd->{geom}{cylinders};
+    }
+
+    #- build a default suitable partition table,
+    #- checksum will be built when writing on disk.
+    #- note third partition is ALWAYS of type Whole disk.
+    my $info = {
+	info => "DiskDrake partition table",
+	rspeed => 5400,
+	pcylcount => $hd->{geom}{totalcylinders},
+	sparecyl => 0,
+	ilfact => 1,
+	ncyl => $hd->{geom}{cylinders},
+	nacyl => $hd->{geom}{totalcylinders} - $hd->{geom}{cylinders},
+	ntrks => $hd->{geom}{heads},
+	nsect => $hd->{geom}{sectors},
+	magic => $magic,
+    };
+
+    $info;
+}
+
+sub clear_raw {
+    my ($hd) = @_;
+    my $pt = { raw => [ ({}) x $nb_primary ], info => info($hd) };
+
+    #- handle special case for partition 2 which is whole disk.
+    $pt->{raw}[2] = {
+	type => 5, #- the whole disk type.
+	flags => 0,
+	start_cylinder => 0,
+	size => $hd->{geom}{cylinders} * $hd->cylinder_size(),
+    };
+
+    $pt;
+}
+
+1;