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-rw-r--r--perl-install/partition_table_gpt.pm266
1 files changed, 0 insertions, 266 deletions
diff --git a/perl-install/partition_table_gpt.pm b/perl-install/partition_table_gpt.pm
deleted file mode 100644
index d4c873851..000000000
--- a/perl-install/partition_table_gpt.pm
+++ /dev/null
@@ -1,266 +0,0 @@
-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;
generated by cgit v1.2.1 (git 2.21.0) at 2024-11-02 03:09:27 +0000