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author | Antoine Ginies <aginies@mandriva.com> | 2011-01-19 10:44:49 +0000 |
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committer | Antoine Ginies <aginies@mandriva.com> | 2011-01-19 10:44:49 +0000 |
commit | 530a16ec071db0e24e6e949e265a96848864967c (patch) | |
tree | fe40cacd28d67b98186754c551b7fd339ebc7e17 /perl-install/partition_table | |
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add mes5-2.6.33 branch
Diffstat (limited to 'perl-install/partition_table')
-rw-r--r-- | perl-install/partition_table/bsd.pm | 152 | ||||
-rw-r--r-- | perl-install/partition_table/dmcrypt.pm | 41 | ||||
-rw-r--r-- | perl-install/partition_table/dos.pm | 262 | ||||
-rw-r--r-- | perl-install/partition_table/empty.pm | 36 | ||||
-rw-r--r-- | perl-install/partition_table/gpt.pm | 268 | ||||
-rw-r--r-- | perl-install/partition_table/lvm.pm | 38 | ||||
-rw-r--r-- | perl-install/partition_table/mac.pm | 396 | ||||
-rw-r--r-- | perl-install/partition_table/raw.pm | 290 | ||||
-rw-r--r-- | perl-install/partition_table/readonly.pm | 20 | ||||
-rw-r--r-- | perl-install/partition_table/sun.pm | 205 |
10 files changed, 1708 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..f69cae97c --- /dev/null +++ b/perl-install/partition_table/bsd.pm @@ -0,0 +1,152 @@ +package partition_table::bsd; # $Id: bsd.pm 228416 2007-09-18 10:32:56Z pixel $ + +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 %pt_typeToDos = ( + 8 => 0x83, + 1 => 0x82, +); +my %pt_typeFromDos = reverse %pt_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 pt_type frag cpg); +my $format = "I I I C C S"; +my $magic = 0x82564557; +my $nb_primary = 8; +my $offset = 0x40; + + +sub use_pt_type { 1 } + +sub read_one { + my ($hd, $sector) = @_; + my $tmp; + + my $F = partition_table::raw::openit($hd) 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, $_; + fs::type::set_pt_type(\%h, $pt_typeToDos{$h{pt_type}} || $h{pt_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, pt_type, active +sub write($$$;$) { + my ($hd, $sector, $pt, $info) = @_; + + #- handle testing for writing partition table on file only! + my $F; + if ($::testing) { + my $file = "/tmp/partition_table_$hd->{device}"; + open $F, ">$file" or die "error opening test file $file"; + } else { + $F = partition_table::raw::openit($hd, 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 $_->{pt_type} = $pt_typeFromDos{$_->{pt_type}} || $_->{pt_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 initialize { + my ($class, $hd) = @_; + $hd->{primary} = { raw => [ ({}) x $nb_primary ], info => info($hd) }; + bless $hd, $class; +; +} + +sub first_usable_sector { 2048 } + +1; diff --git a/perl-install/partition_table/dmcrypt.pm b/perl-install/partition_table/dmcrypt.pm new file mode 100644 index 000000000..3eae783c6 --- /dev/null +++ b/perl-install/partition_table/dmcrypt.pm @@ -0,0 +1,41 @@ +package partition_table::dmcrypt; # $Id: $ + +# dmcrypt on full disk + +use diagnostics; +use strict; + +our @ISA = qw(partition_table::readonly); + +use common; +use partition_table::readonly; +use fs::type; + +sub _parts { + my ($hd) = @_; + + my $part = { size => $hd->{totalsectors}, device => $hd->{device} }; + add2hash($part, fs::type::type_name2subpart('Encrypted')); + + require fs; + fs::get_major_minor([$part]); # to allow is_same_hd() in fs::dmcrypt + + [ $part ]; +} + +sub read_primary { + my ($hd) = @_; + + my $type = fs::type::type_subpart_from_magic($hd); + + $type && $type->{type_name} eq 'Encrypted' or return; + + partition_table::dmcrypt->initialize($hd); + 1; +} + +sub initialize { + my ($class, $hd) = @_; + + partition_table::readonly::initialize($class, $hd, _parts($hd)); +} diff --git a/perl-install/partition_table/dos.pm b/perl-install/partition_table/dos.pm new file mode 100644 index 000000000..00b3c531e --- /dev/null +++ b/perl-install/partition_table/dos.pm @@ -0,0 +1,262 @@ +package partition_table::dos; # $Id: dos.pm 228577 2007-09-19 15:34:17Z pixel $ + +use diagnostics; +use strict; +use vars qw(@ISA); + +@ISA = qw(partition_table::raw); + +use common; +use partition_table::raw; +use partition_table; +use fs::type; +use c; + +my @fields = qw(active start_head start_sec start_cyl pt_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 use_pt_type { 1 } +sub hasExtended { 1 } + +sub geometry_to_string { + my ($geom) = @_; + "$geom->{cylinders}/$geom->{heads}/$geom->{sectors}"; +} + +sub last_usable_sector { + my ($hd) = @_; + #- do not use totalsectors, see gi/docs/Partition-ends-after-end-of-disk.txt for more + $hd->{geom}{sectors} * $hd->{geom}{heads} * $hd->{geom}{cylinders}; +} + +my $two_TB = 2 * 1024 * 1024 * 2048; +sub max_partition_start { $two_TB - 1 } +sub max_partition_size { $two_TB - 1 } + +sub get_rawCHS { + my ($part) = @_; + + exists $part->{start_cyl} or internal_error("get_rawCHS $part->{device}"); + + [ $part->{start_cyl}, $part->{start_head}, $part->{start_sec} ], + [ $part->{end_cyl}, $part->{end_head}, $part->{end_sec} ]; +} +sub set_rawCHS { + my ($part, $raw_chs_start, $raw_chs_end) = @_; + ($part->{start_cyl}, $part->{start_head}, $part->{start_sec}) = @$raw_chs_start; + ($part->{end_cyl}, $part->{end_head}, $part->{end_sec}) = @$raw_chs_end; +} + +sub compute_CHS { + my ($hd, $part) = @_; + my ($chs_start, $chs_end) = CHS_from_part_linear($hd->{geom}, $part); + set_rawCHS($part, $chs_start ? CHS2rawCHS($hd->{geom}, $chs_start) : [0,0,0], + $chs_end ? CHS2rawCHS($hd->{geom}, $chs_end) : [0,0,0]); +} + +sub CHS_from_part_rawCHS { + my ($part) = @_; + + $part->{start} || $part->{pt_type} or return; + + my ($raw_chs_start, $raw_chs_end) = get_rawCHS($part); + rawCHS2CHS($raw_chs_start), rawCHS2CHS($raw_chs_end); +} + +sub CHS_from_part_linear { + my ($geom, $part) = @_; + + $part->{start} || $part->{pt_type} or return; + + sector2CHS($geom, $part->{start}), sector2CHS($geom, $part->{start} + $part->{size} - 1); +} + +sub rawCHS2CHS { + my ($chs) = @_; + my ($c, $h, $s) = @$chs; + [ $c | (($s & 0xc0) << 2), $h, ($s & 0x3f) - 1 ]; +} + +sub CHS2rawCHS { + my ($geom, $chs) = @_; + my ($c, $h, $s) = @$chs; + if ($c > 1023) { + #- no way to have a #cylinder >= 1024 + $c = 1023; + $h = $geom->{heads} - 1; + $s = $geom->{sectors} - 1; + } + [ $c & 0xff, $h, ($s + 1) | (($c >> 2) & 0xc0) ]; +} + +# returns (cylinder, head, sector) +sub sector2CHS { + my ($geom, $start) = @_; + my ($s, $h); + ($start, $s) = divide($start, $geom->{sectors}); + ($start, $h) = divide($start, $geom->{heads}); + [ $start, $h, $s ]; +} + +sub is_geometry_valid_for_the_partition_table { + my ($hd, $geom, $no_log) = @_; + + every { + my ($chs_start_v1, $chs_end_v1) = map { join(',', @$_) } CHS_from_part_rawCHS($_) or next; + my ($chs_start_v2, $chs_end_v2) = map { join(',', @$_) } map { [ min($_->[0], 1023), $_->[1], $_->[2] ] } CHS_from_part_linear($geom, $_); + if (!$no_log) { + $chs_start_v1 eq $chs_start_v2 or log::l("is_geometry_valid_for_the_partition_table failed for ($_->{device}, $_->{start}): $chs_start_v1 vs $chs_start_v2 with geometry " . geometry_to_string($geom)); + $chs_end_v1 eq $chs_end_v2 or log::l("is_geometry_valid_for_the_partition_table failed for ($_->{device}, " . ($_->{start} + $_->{size} - 1) . "): $chs_end_v1 vs $chs_end_v2 with geometry " . geometry_to_string($geom)); + } + $chs_start_v1 eq $chs_start_v2 && $chs_end_v1 eq $chs_end_v2; + } @{$hd->{primary}{normal} || []}; +} + +#- from parted, thanks! +my @valid_nb_sectors = (63, 61, 48, 32, 16); +my @valid_nb_heads = (255, 240, 192, 128, 96, 64, 61, 32, 17, 16); + +sub guess_geometry_from_partition_table { + my ($hd) = @_; + + my @chss = map { CHS_from_part_rawCHS($_) } @{$hd->{primary}{normal} || []} or return { empty => 1 }; + my ($nb_heads, $nb_sectors) = (max(map { $_->[1] } @chss) + 1, max(map { $_->[2] } @chss) + 1); + my $geom = { sectors => $nb_sectors, heads => $nb_heads }; + partition_table::raw::compute_nb_cylinders($geom, $hd->{totalsectors}); + log::l("guess_geometry_from_partition_table $hd->{device}: " . geometry_to_string($geom)); + + member($geom->{sectors}, @valid_nb_sectors) or return { invalid => 1 }; + $geom; +} + +sub geometry_from_edd { + my ($hd, $edd_dir) = @_; + + my $sectors = cat_("$edd_dir/legacy_sectors_per_track") or return; + my $heads = cat_("$edd_dir/legacy_max_head") or return; + + my $geom = { sectors => 0 + $sectors, heads => 1 + $heads, from_edd => 1 }; + is_geometry_valid_for_the_partition_table($hd, $geom, 0) or return; + partition_table::raw::compute_nb_cylinders($geom, $hd->{totalsectors}); + + log::l("geometry_from_edd $hd->{device} $hd->{volume_id}: " . geometry_to_string($geom)); + + $geom; +} + + +sub try_every_geometry { + my ($hd) = @_; + + my $geom = {}; + foreach (@valid_nb_sectors) { + $geom->{sectors} = $_; + foreach (@valid_nb_heads) { + $geom->{heads} = $_; + if (is_geometry_valid_for_the_partition_table($hd, $geom, 1)) { + partition_table::raw::compute_nb_cylinders($geom, $hd->{totalsectors}); + log::l("try_every_geometry $hd->{device}: found " . geometry_to_string($geom)); + return $geom; + } + } + } + log::l("$hd->{device}: argh! no geometry exists for this partition table"); + undef; +} + +sub set_best_geometry_for_the_partition_table { + my ($hd) = @_; + + my $guessed_geom = guess_geometry_from_partition_table($hd); + if ($guessed_geom->{empty}) { + log::l("$hd->{device}: would need looking at BIOS info to find out geometry") if !$hd->{geom}{from_edd}; + return; + } + my $default_ok = is_geometry_valid_for_the_partition_table($hd, $hd->{geom}, 0); + if ($guessed_geom->{invalid}) { + log::l("$hd->{device}: no valid geometry guessed from partition table"); + $default_ok and return; + $guessed_geom = try_every_geometry($hd) or return; + } + + if ($guessed_geom->{heads} == $hd->{geom}{heads} && $guessed_geom->{sectors} == $hd->{geom}{sectors}) { + # cool! + } else { + my $guessed_ok = is_geometry_valid_for_the_partition_table($hd, $guessed_geom, 0); + if ($default_ok && $guessed_ok) { + #- oh my!? + log::l("$hd->{device}: both guessed and default are valid??? " . geometry_to_string($hd->{geom}) . " vs " . geometry_to_string($guessed_geom)); + } elsif ($default_ok) { + log::l("$hd->{device}: keeping default geometry " . geometry_to_string($hd->{geom})); + } elsif ($guessed_ok) { + log::l("$hd->{device}: using guessed geometry " . geometry_to_string($guessed_geom) . " instead of " . geometry_to_string($hd->{geom})); + put_in_hash($hd->{geom}, $guessed_geom); + } else { + log::l("$hd->{device}: argh! no valid geometry found"); + } + } +} + +sub read_one { + my ($hd, $sector) = @_; + my $tmp; + + my $F = partition_table::raw::openit($hd) 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; + fs::type::set_pt_type(\%h, $h{pt_type}); + \%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, pt_type, active +sub write { + my ($hd, $sector, $pt) = @_; + + log::l("partition::dos::write $hd->{device}"); + + #- handle testing for writing partition table on file only! + my $F; + if ($::testing) { + my $file = "/tmp/partition_table_$hd->{device}"; + open $F, ">$file" or die "error opening test file $file"; + } else { + $F = partition_table::raw::openit($hd, 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; $_->{pt_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 empty_raw { { raw => [ ({}) x $nb_primary ] } } + +sub initialize { + my ($class, $hd) = @_; + $hd->{primary} = empty_raw(); + bless $hd, $class; +} + +1; diff --git a/perl-install/partition_table/empty.pm b/perl-install/partition_table/empty.pm new file mode 100644 index 000000000..5d45143f8 --- /dev/null +++ b/perl-install/partition_table/empty.pm @@ -0,0 +1,36 @@ +package partition_table::empty; # $Id: empty.pm 228433 2007-09-18 12:30:17Z pixel $ + +#- this is a mainly dummy partition table. If we find it's empty, we just call - +#- ->clear 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_one { + my ($hd, $sector) = @_; + my $tmp; + + my $F = partition_table::raw::openit($hd) 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, 1024 or die "error reading magic number on disk $hd->{device}"; + $tmp eq substr($tmp, 0, 1) x 1024 or die "bad magic number on disk $hd->{device}"; + + partition_table::initialize($hd); + + $hd->{primary}{raw}, $hd->{primary}{info}; +} + +1; diff --git a/perl-install/partition_table/gpt.pm b/perl-install/partition_table/gpt.pm new file mode 100644 index 000000000..e50624410 --- /dev/null +++ b/perl-install/partition_table/gpt.pm @@ -0,0 +1,268 @@ +package partition_table::gpt; # $Id: gpt.pm 240647 2008-03-25 17:19:28Z pixel $ + +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 fs::type; +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; + open(my $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"; + $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 not 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 not 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; + my $pt_type = $gpt_types_rev{$h{gpt_type}}; + fs::type::set_pt_type(\%h, defined $pt_type ? $pt_type : 0x100); + \%h; + } (1 .. $info->{nbPartitions}); + \@pt; +} + +sub read_one { + my ($hd, $sector) = @_; + + my $l = partition_table::dos::read($hd, $sector); + my @l = grep { $_->{size} && $_->{pt_type} && !partition_table::isExtended($_) } @$l; + @l == 1 or die "bad PMBR"; + $l[0]{pt_type} == 0xee or die "bad PMBR"; + my $myLBA = $l[0]{start}; + + my $F = partition_table::raw::openit($hd) 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, pt_type, active +sub write { + my ($hd, $sector, $pt, $info) = @_; + + foreach (@$pt) { + $_->{ending} = $_->{start} + $_->{size} - 1; + $_->{guid} ||= generate_guid(); + $_->{gpt_type} = $gpt_types{$_->{pt_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::empty_raw(); + $pmbr->{raw}[0] = { pt_type => 0xee, local_start => $info->{myLBA}, size => $info->{alternateLBA} - $info->{myLBA} + 1 }; + partition_table::dos::write($hd, $sector, $pmbr->{raw}); + } + + my $F = partition_table::raw::openit($hd, 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} && $_->{pt_type} } @$raw; +} +sub can_add { &can_raw_add } +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 use_pt_type { 1 } + +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 initialize { + my ($class, $hd) = @_; + $hd->{primary} = { raw => [], info => info($hd) }; + bless $hd, $class; +} + +1; diff --git a/perl-install/partition_table/lvm.pm b/perl-install/partition_table/lvm.pm new file mode 100644 index 000000000..8a28a4c2a --- /dev/null +++ b/perl-install/partition_table/lvm.pm @@ -0,0 +1,38 @@ +package partition_table::lvm; # $Id: $ + +# LVM on full disk + +use diagnostics; +use strict; + +our @ISA = qw(partition_table::readonly); + +use common; +use partition_table::readonly; +use fs::type; + +sub _parts { + my ($hd) = @_; + + my $part = { size => $hd->{totalsectors}, device => $hd->{device} }; + add2hash($part, fs::type::type_name2subpart('Linux Logical Volume Manager')); + + [ $part ]; +} + +sub read_primary { + my ($hd) = @_; + + my $type = fs::type::type_subpart_from_magic($hd); + + $type && $type->{type_name} eq 'Linux Logical Volume Manager' or return; + + partition_table::lvm->initialize($hd); + 1; +} + +sub initialize { + my ($class, $hd) = @_; + + partition_table::readonly::initialize($class, $hd, _parts($hd)); +} diff --git a/perl-install/partition_table/mac.pm b/perl-install/partition_table/mac.pm new file mode 100644 index 000000000..015feaee6 --- /dev/null +++ b/perl-install/partition_table/mac.pm @@ -0,0 +1,396 @@ +package partition_table::mac; # $Id: mac.pm 228416 2007-09-18 10:32:56Z pixel $ + +use diagnostics; +#use strict; - fixed other PPC code to comply, but program bails on empty partition table - sbenedict +use vars qw(@ISA $freepart $bootstrap_part $macos_part $new_bootstrap); + +@ISA = qw(partition_table::raw); + +use common; +use fs::type; +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 ($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 use_pt_type { 1 } + +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_one { + my ($hd, $sector) = @_; + my $tmp; + + my $F = partition_table::raw::openit($hd) 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; + + foreach (1 .. $info{bzDrvrCnt}) { + 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 (my $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{fs_type} = $h{pName} =~ /swap/i ? 'swap' : 'ext2'; + } elsif ($h{pType} =~ /^Apple_Free/i) { + #- need to locate a 1MB partition to setup a bootstrap on + if ($freepart && $freepart->{size} >= 1) { + #- already found a suitable partition + } else { + $freepart = { start => $h{start}, size => $h{size}/2048, hd => $hd, part => "/dev/$hd->{device}" . ($i+1) }; + log::l("free apple partition found on drive /dev/$freepart->{hd}{device}, block $freepart->{start}, size $freepart->{size}"); + } + $h{pt_type} = 0x0; + $h{pName} = 'Extra'; + } elsif ($h{pType} =~ /^Apple_HFS/i) { + fs::type::set_pt_type(\%h, 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{pt_type} = 0x401; + $h{isMap} = 1; + } elsif ($h{pType} =~ /^Apple_Bootstrap/i) { + $h{pt_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{pt_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! + my $F; + if ($::testing) { + my $file = "/tmp/partition_table_$hd->{device}"; + open $F, ">$file" or die "error opening test file $file"; + } else { + $F = partition_table::raw::openit($hd, 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, { + pt_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, { + pt_type => 0x0, + start => $last->{start} + $last->{size}, + size => $hd->{totalsectors} - ($last->{start} + $last->{size}), + }; + } + + # Since we did not 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; + foreach my $dd (@{$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"; + $_->{pReserved} = "\0"; + + if ($_->{pt_type} == 0x402) { + $_->{pType} = "Apple_HFS"; + $_->{pName} = "MacOS"; + $_->{pFlags} = 0x4000037F; + } elsif ($_->{pt_type} == 0x401 && $_->{start} == 1) { + $_->{pType} = "Apple_Partition_Map"; + $_->{pName} = "Apple"; + $_->{pFlags} = 0x33; + } elsif ($_->{pt_type} == 0x401) { + $_->{pType} = "Apple_Bootstrap"; + $_->{pName} = "bootstrap"; + $_->{pFlags} = 0x33; + $_->{isBoot} = 1; + log::l("writing a bootstrap at /dev/$_->{device}"); + $new_bootstrap = 1 if !(defined $bootstrap_part); + $bootstrap_part = "/dev/" . $_->{device}; + } elsif (isSwap($_)) { + $_->{pType} = "Apple_UNIX_SVR2"; + $_->{pName} = "swap"; + $_->{pFlags} = 0x33; + } elsif ($_->{fs_type} eq 'ext2') { + $_->{pType} = "Apple_UNIX_SVR2"; + $_->{pName} = "Linux Native"; + $_->{pFlags} = 0x33; + } elsif ($_->{fs_type} eq 'reiserfs') { + $_->{pType} = "Apple_UNIX_SVR2"; + $_->{pName} = "Linux ReiserFS"; + $_->{pFlags} = 0x33; + } elsif ($_->{fs_type} eq 'xfs') { + $_->{pType} = "Apple_UNIX_SVR2"; + $_->{pName} = "Linux XFS"; + $_->{pFlags} = 0x33; + } elsif ($_->{fs_type} eq 'jfs') { + $_->{pType} = "Apple_UNIX_SVR2"; + $_->{pName} = "Linux JFS"; + $_->{pFlags} = 0x33; + } elsif ($_->{fs_type} eq 'ext3') { + $_->{pType} = "Apple_UNIX_SVR2"; + $_->{pName} = "Linux ext3"; + $_->{pFlags} = 0x33; + } elsif ($_->{pt_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, + }; + + $info; +} + +sub initialize { + my ($class, $hd) = @_; + my @oldraw = @{$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] = { + pt_type => 0x401, + start => 1, + size => 63, + isMap => 1, + }; +# $pt->{raw}[1] = { +# pt_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}}; + + $hd->{primary} = $pt; + bless $hd, $class; +} + +1; diff --git a/perl-install/partition_table/raw.pm b/perl-install/partition_table/raw.pm new file mode 100644 index 000000000..a43cdc2ee --- /dev/null +++ b/perl-install/partition_table/raw.pm @@ -0,0 +1,290 @@ +package partition_table::raw; # $Id: raw.pm 244309 2008-08-21 14:36:52Z pixel $ + +use diagnostics; +use strict; + +use common; +use devices; +use detect_devices; +use fs::type; +use log; +use c; + +my @MBR_signatures = ( +if_(arch() =~ /ppc/, + (map { [ 'yaboot', 0, "PM", 0x200 * $_ + 0x10, "bootstrap\0" ] } 0 .. 61), #- "PM" is a Partition Map + [ 'yaboot', 0x400, "BD", 0x424, "\011bootstrap" ], #- "BD" is a HFS filesystem +), + [ 'empty', 0, "\0\0\0\0" ], + [ 'grub', 0, "\xEBG", 0x17d, "stage1 \0" ], + [ 'grub', 0, "\xEBH", 0x17e, "stage1 \0" ], + [ 'grub', 0, "\xEBH", 0x18a, "stage1 \0" ], + sub { my ($F) = @_; + #- standard grub has no good magic (Mandriva's grub is patched to have "GRUB" at offset 6) + #- so scanning a range of possible places where grub can have its string + #- 0x176 found on Conectiva 10 + my ($min, $max, $magic) = (0x176, 0x181, "GRUB \0"); + my $tmp; + sysseek($F, 0, 0) && sysread($F, $tmp, $max + length($magic)) or return; + substr($tmp, 0, 2) eq "\xEBH" or return; + index($tmp, $magic, $min) >= 0 && "grub"; + }, + [ 'lilo', 0x2, "LILO" ], + [ 'lilo', 0x6, "LILO" ], + [ 'lilo', 0x6 + 0x40, "LILO" ], #- when relocated in lilo's bsect_update(), variable "space" on paragraph boundary gives 0x40 + [ 'grub', 0x6, "GRUB" ], + [ 'osbs', 0x2, "OSBS" ], #- http://www.prz.tu-berlin.de/~wolf/os-bs.html + [ 'pqmagic', 0xef, "PQV" ], + [ 'BootStar', 0x130, "BootStar:" ], + [ 'DocsBoot', 0x148, 'DocsBoot' ], + [ 'system_commander', 0x1ad, "SYSCMNDRSYS" ], + [ 'Be Os', 0x24, 'Boot Manager' ], + [ 'os2', 0, "\xFA\xB8\x30\x00", 0xfA, "OS/2" ], + [ 'TimO', 0, 'IBM Thinkpad hibernation partition' ], + [ 'dos', 0xa0, "\x25\x03\x4E\x02\xCD\x13" ], + [ 'dos', 0xa0, "\x00\xB4\x08\xCD\x13\x72" ], #- nt2k's + [ 'dos', 0x60, "\xBB\x00\x7C\xB8\x01\x02\x57\xCD\x13\x5F\x73\x0C\x33\xC0\xCD\x13" ], #- nt's + [ 'dos', 0x70, "\x0C\x33\xC0\xCD\x13\x4F\x75\xED\xBE\xA3" ], + [ 'freebsd', 0xC0, "\x00\x30\xE4\xCD\x16\xCD\x19\xBB\x07\x00\xB4" ], + [ 'freebsd', 0x160, "\x6A\x10\x89\xE6\x48\x80\xCC\x40\xCD\x13" ], + [ 'dummy', 0xAC, "\x0E\xB3\x07\x56\xCD\x10\x5E\xEB" ], #- caldera? + [ 'ranish', 0x100, "\x6A\x10\xB4\x42\x8B\xF4\xCD\x13\x8B\xE5\x73" ], + [ 'os2', 0x1c2, "\x0A" ], + [ 'Acronis', 0, "\xE8\x12\x01" ], +); + +sub typeOfMBR($) { typeFromMagic(devices::make($_[0]), @MBR_signatures) } +sub typeOfMBR_($) { typeFromMagic($_[0], @MBR_signatures) } + +sub use_pt_type { 0 } +sub hasExtended { 0 } +sub set_best_geometry_for_the_partition_table {} + +sub cylinder_size($) { + my ($hd) = @_; + $hd->{geom}{sectors} * $hd->{geom}{heads}; +} +sub first_usable_sector { 1 } +sub last_usable_sector { + my ($hd) = @_; + $hd->{totalsectors}; +} +# no limit +sub max_partition_start { 1e99 } +sub max_partition_size { 1e99 } + +#- 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}; + $part->{size} > 0 or internal_error("adjustEnd get a too small partition to handle correctly"); +} + +sub compute_nb_cylinders { + my ($geom, $totalsectors) = @_; + if ($geom->{heads} && $geom->{sectors}) { + $geom->{cylinders} = int $totalsectors / $geom->{heads} / $geom->{sectors}; + } +} + +sub keep_non_duplicates { + my %l; + $l{$_->[0]}++ foreach @_; + map { @$_ } grep { $l{$_->[0]} == 1 } @_; +} + +sub get_geometries { + my (@hds) = @_; + + @hds = grep { + if (my $h = get_geometry($_->{file})) { + add2hash_($_, $h); + 1; + } else { + log::l("An error occurred while getting the geometry of block device $_->{file}: $!"); + 0; + } + } @hds; + + my %id2hd = keep_non_duplicates(map { + my $F = openit($_) or log::l("failed to open device $_->{device}"); + my $tmp; + if ($F && c::lseek_sector(fileno($F), 0, 0x1b8) && sysread($F, $tmp, 4)) { + [ sprintf('0x%08x', unpack('V', $tmp)), $_ ]; + } else { + (); + } + } @hds); + + + my %id2edd = keep_non_duplicates(map { [ scalar(chomp_(cat_("$_/mbr_signature"))), $_ ] } glob("/sys/firmware/edd/int13_dev*")); + + log::l("id2hd: " . join(' ', map_each { "$::a=>$::b->{device}" } %id2hd)); + log::l("id2edd: " . join(' ', map_each { "$::a=>$::b" } %id2edd)); + + foreach my $id (keys %id2hd) { + my $hd = $id2hd{$id}; + $hd->{volume_id} = $id; + + if (my $edd_dir = $id2edd{$id}) { + $hd->{bios_from_edd} = $1 if $edd_dir =~ /int13_dev(.*)/; + + require partition_table::dos; + my $geom = partition_table::dos::geometry_from_edd($hd, $edd_dir); + $hd->{geom} = $geom if $geom; + } + } + + @hds; +} + +sub get_geometry { + my ($dev) = @_; + sysopen(my $F, $dev, 0) or return; + + my $total = c::total_sectors(fileno $F); + + my $g = ""; + my %geom; + if (ioctl($F, c::HDIO_GETGEO(), $g)) { + @geom{qw(heads sectors cylinders start)} = unpack "CCSL", $g; + log::l("HDIO_GETGEO on $dev succeeded: heads=$geom{heads} sectors=$geom{sectors} cylinders=$geom{cylinders} start=$geom{start}"); + $geom{totalcylinders} = $geom{cylinders}; + + #- $geom{cylinders} is no good (only a ushort, that means less than 2^16 => at best 512MB) + if ($total) { + compute_nb_cylinders(\%geom, $total); + } else { + $total = $geom{heads} * $geom{sectors} * $geom{cylinders}; + } + } + + { totalsectors => $total, if_($geom{heads}, geom => \%geom) }; +} + +sub openit { + my ($hd, $o_mode) = @_; + my $F; sysopen($F, $hd->{file}, $o_mode || 0) && $F; +} + +sub can_add { + my ($hd) = @_; + !$_->{size} && !$_->{pt_type} || isExtended($_) and return 1 foreach @{$hd->{primary}{raw}}; + 0; +} + +sub raw_removed { + my ($_hd, $_raw) = @_; +} +sub can_raw_add { + my ($hd) = @_; + $_->{size} || $_->{pt_type} or return 1 foreach @{$hd->{primary}{raw}}; + 0; +} +sub raw_add { + my ($_hd, $raw, $part) = @_; + + foreach (@$raw) { + $_->{size} || $_->{pt_type} and next; + $_ = $part; + return; + } + die "raw_add: partition table already full"; +} + +sub zero_MBR { &partition_table::initialize } #- deprecated + +sub clear_existing { + my ($hd) = @_; + my @parts = (partition_table::get_normal_parts($hd), if_($hd->{primary}{extended}, $hd->{primary}{extended})); + partition_table::will_tell_kernel($hd, del => $_) foreach @parts; +} + +#- deprecated +sub zero_MBR_and_dirty { + my ($hd) = @_; + fsedit::partition_table_clear_and_initialize([], $hd); +} + +sub read_primary { + my ($hd) = @_; + + my ($pt, $info) = eval { $hd->read_one(0) } or return; + my $primary = partition_table::raw::pt_info_to_primary($hd, $pt, $info); + $hd->{primary} = $primary; + undef $hd->{extended}; + partition_table::verifyPrimary($primary); + 1; +} + +sub pt_info_to_primary { + my ($hd, $pt, $info) = @_; + + my @extended = $hd->hasExtended ? grep { isExtended($_) } @$pt : (); + my @normal = grep { $_->{size} && !isEmpty($_) && !isExtended($_) } @$pt; + my $nb_special_empty = int(grep { $_->{size} && isEmpty($_) } @$pt); + + @extended > 1 and die "more than one extended partition"; + + put_in_hash($_, partition_table::hd2minimal_part($hd)) foreach @normal, @extended; + { raw => $pt, extended => $extended[0], normal => \@normal, info => $info, nb_special_empty => $nb_special_empty }; +} + +#- ugly stuff needed mainly for Western Digital IDE drives +#- try writing what we've just read, yells if it fails +#- testing on last sector of head #0 (unused in 99% cases) +#- +#- return false if the device can not be written to (especially for Smartmedia) +sub test_for_bad_drives { + my ($hd) = @_; + + my $sector = $hd->{geom} ? $hd->{geom}{sectors} - 1 : 0; + log::l("test_for_bad_drives($hd->{file} on sector #$sector)"); + + sub error { die "$_[0] error: $_[1]" } + + my $F = openit($hd, $::testing ? 0 : 2) or error(openit($hd) ? 'write' : 'read', "can not open device"); + + my $seek = sub { + c::lseek_sector(fileno($F), $sector, 0) or error('read', "seeking to sector $sector failed"); + }; + my $tmp; + + &$seek; sysread $F, $tmp, $SECTORSIZE or error('read', "can not even read ($!)"); + return if $hd->{readonly} || $::testing; + &$seek; syswrite $F, $tmp or error('write', "can not even write ($!)"); + + my $tmp2; + &$seek; sysread $F, $tmp2, $SECTORSIZE or die "test_for_bad_drives: can not even read again ($!)"; + $tmp eq $tmp2 or die +N("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, corrupted data."); +} + +1; diff --git a/perl-install/partition_table/readonly.pm b/perl-install/partition_table/readonly.pm new file mode 100644 index 000000000..f36b60e4a --- /dev/null +++ b/perl-install/partition_table/readonly.pm @@ -0,0 +1,20 @@ +package partition_table::readonly; # $Id: $ + +use diagnostics; +use strict; + +our @ISA = qw(partition_table::raw); + +use common; +use partition_table::raw; +use fs::type; + +sub initialize { + my ($class, $hd, $parts) = @_; + + $hd->{readonly} = $hd->{getting_rid_of_readonly_allowed} = 1; + $hd->{primary} = { normal => $parts }; + delete $hd->{extended}; + + bless $hd, $class; +} diff --git a/perl-install/partition_table/sun.pm b/perl-install/partition_table/sun.pm new file mode 100644 index 000000000..47d702621 --- /dev/null +++ b/perl-install/partition_table/sun.pm @@ -0,0 +1,205 @@ +package partition_table::sun; # $Id: sun.pm 228416 2007-09-18 10:32:56Z pixel $ + +use diagnostics; +use strict; +use vars qw(@ISA); + +@ISA = qw(partition_table::raw); + +use common; +use partition_table::raw; +use partition_table; +use fs::type; +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, $fields2) = ([ qw(pt_type flags) ], [ qw(start_cylinder size) ]); +my ($format1, $format2) = ("xCxC", "N2"); +my $magic = 0xDABE; +my $nb_primary = 8; +my $offset = 0; + +sub use_pt_type { 1 } + +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; + + $crc ^= $_ foreach @l2b; + + $crc; +} + +sub read_one { + my ($hd, $sector) = @_; + my $tmp; + + my $F = partition_table::raw::openit($hd) 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, $info{partitions}; + foreach (0..$nb_primary-1) { + my $h = { flag => $infos_up[1 + 2 * $_], + start_cylinder => $partitions_up[2 * $_], size => $partitions_up[1 + 2 * $_] }; + fs::type::set_pt_type($h, $infos_up[2 * $_]); + $h->{start} = $sector + $h->{start_cylinder} * $hd->cylinder_size; + $h->{pt_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{pt_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, pt_type, active +sub write($$$;$) { + my ($hd, $sector, $pt, $info) = @_; +# my ($csize, $wdsize) = (0, 0); + + #- handle testing for writing partition table on file only! + my $F; + if ($::testing) { + my $file = "/tmp/partition_table_$hd->{device}"; + open $F, ">$file" or die "error opening test file $file"; + } else { + $F = partition_table::raw::openit($hd, 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 $_->{pt_type} != 5; +# $wdsize += $_->{size} if $_->{pt_type} == 5; + $_->{flags} |= 0x10 if $_->{mntpoint} eq '/'; + $_->{flags} |= 0x01 if !isSwap($_); + 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, + }; + + $info; +} + +sub initialize { + my ($hd) = @_; + my $pt = { raw => [ ({}) x $nb_primary ], info => info($hd) }; + + #- handle special case for partition 2 which is whole disk. + $pt->{raw}[2] = { + pt_type => 5, #- the whole disk type. + flags => 0, + start_cylinder => 0, + size => $hd->{geom}{cylinders} * $hd->cylinder_size, + }; + + $hd->{primary} = $pt; + bless $hd, 'partition::sun'; +} + +1; |