diff options
Diffstat (limited to 'perl-install/partition_table_sun.pm')
| -rw-r--r-- | perl-install/partition_table_sun.pm | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/perl-install/partition_table_sun.pm b/perl-install/partition_table_sun.pm deleted file mode 100644 index 2eec591b3..000000000 --- a/perl-install/partition_table_sun.pm +++ /dev/null @@ -1,201 +0,0 @@ -package partition_table_sun; # $Id$ - -use diagnostics; -use strict; -use vars qw(@ISA); - -@ISA = qw(partition_table_raw); - -use common qw(:common :system :file :functional); -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($$) { - my ($hd, $sector) = @_; - my $tmp; - - local *F; partition_table_raw::openit($hd, *F) or die "failed to open device"; - c::lseek_sector(fileno(F), $sector, $offset) or die "reading of partition in sector $sector failed"; - - sysread F, $tmp, psizeof($main_format) or die "error while reading partition table in sector $sector"; - my %info; @info{@$main_fields} = unpack $main_format, $tmp; - - #- check magic number - $info{magic} == $magic or die "bad magic number"; - - #- check crc, csum contains the crc so result should be 0. - compute_crc($tmp) == 0 or die "bad checksum"; - - @{$hd->{geom}}{qw(cylinders heads sectors)} = @info{qw(ncyl ntrks nsect)}; - - my @pt; - my @infos_up = unpack $format1 x $nb_primary, $info{infos}; - my @partitions_up = unpack $format2 x $nb_primary, $info{partitions}; - for (0..$nb_primary-1) { - my $h = { type => $infos_up[2 * $_], flag => $infos_up[1 + 2 * $_], - start_cylinder => $partitions_up[2 * $_], size => $partitions_up[1 + 2 * $_] }; - $h->{start} = $sector + $h->{start_cylinder} * $hd->cylinder_size(); - $h->{type} && $h->{size} or $h->{$_} = 0 foreach keys %$h; - push @pt, $h; - } - -#- this code is completely broken by null char inside strings, it gets completely crazy :-) -# my @pt = mapn { -# my %h; -# @h{@$fields1} = unpack $format1, $_[0]; -# @h{@$fields2} = unpack $format2, $_[1]; -# $h{start} = $sector + $h{start_cylinder} * $hd->cylinder_size(); -# $h{type} && $h{size} or $h{$_} = 0 foreach keys %h; -# \%h; -# } [ grep { $_ } split /(.{$size1})/o, $info{infos} ], [ grep { $_ } split /(.{$size2})/o, $info{partitions} ]; - - [ @pt ], \%info; -} - -# write the partition table (and extended ones) -# for each entry, it uses fields: start, size, type, active -sub write($$$;$) { - my ($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; - - 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; |