diff options
author | Mystery Man <unknown@mandriva.org> | 2000-11-08 00:01:16 +0000 |
---|---|---|
committer | Mystery Man <unknown@mandriva.org> | 2000-11-08 00:01:16 +0000 |
commit | d5c526273db473a7d87a26000585900fc10dda7d (patch) | |
tree | 0fdaabe7a00921b6cc556601b103d344fc7ac781 /perl-install/partition_table_sun.pm | |
parent | 9c164312d4bfff6d93e1c4529de6b992f2bebc44 (diff) | |
download | drakx-backup-do-not-use-d5c526273db473a7d87a26000585900fc10dda7d.tar drakx-backup-do-not-use-d5c526273db473a7d87a26000585900fc10dda7d.tar.gz drakx-backup-do-not-use-d5c526273db473a7d87a26000585900fc10dda7d.tar.bz2 drakx-backup-do-not-use-d5c526273db473a7d87a26000585900fc10dda7d.tar.xz drakx-backup-do-not-use-d5c526273db473a7d87a26000585900fc10dda7d.zip |
This commit was manufactured by cvs2svn to create branch
'unlabeled-1.1.1'.
Diffstat (limited to 'perl-install/partition_table_sun.pm')
-rw-r--r-- | perl-install/partition_table_sun.pm | 167 |
1 files changed, 47 insertions, 120 deletions
diff --git a/perl-install/partition_table_sun.pm b/perl-install/partition_table_sun.pm index 55c3ab775..5c8fc749f 100644 --- a/perl-install/partition_table_sun.pm +++ b/perl-install/partition_table_sun.pm @@ -11,6 +11,12 @@ use partition_table_raw; use partition_table; use c; +#- very bad and rough handling :( +my %typeToDos = ( + 5 => 0, +); +my %typeFromDos = reverse %typeToDos; + my ($main_format, $main_fields) = list2kv( a128 => 'info', a14 => 'spare0', @@ -33,44 +39,12 @@ my ($main_format, $main_fields) = list2kv( $main_format = join '', @$main_format; my ($fields1, $fields2) = ([ qw(type flags) ], [ qw(start_cylinder size) ]); -my ($format1, $format2) = ("xCxC", "N2"); +my ($format1, $format2) = ("x C x C", "N N"); my ($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($$) { my ($hd, $sector) = @_; my $tmp; @@ -84,31 +58,18 @@ sub read($$) { #- 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, $info{partitions} ]; + @{$hd->{geom}}{qw(cylinders heads sectors)} = @info{qw(ncyl nsect ntrks)}; + + #- TODO verify checksum + my @pt = mapn { + my %h; + @h{@$fields1} = unpack $format1, $_[0]; + @h{@$fields2} = unpack $format2, $_[1]; + $h{start} = $sector + $h{start_cylinder} * partition_table::cylinder_size($hd); + $h{type} = $typeToDos{$h{type}} || $h{type}; + $h{size} or $h{$_} = 0 foreach keys %h; + \%h; + } [ $info{infos} =~ /(.{$size1})/g ], [ $info{partitions} =~ /(.{$size2})/g ]; [ @pt ], \%info; } @@ -117,85 +78,51 @@ sub read($$) { # for each entry, it uses fields: start, size, type, active sub write($$$;$) { my ($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, $offset) or return 0; - } + + local *F; partition_table_raw::openit($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->{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; + $_->{start} % partition_table::cylinder_size($hd) == 0 or die "partition not at beginning of cylinder"; + local $_->{type} = $typeFromDos{$_->{type}} || $_->{type}; + local $_->{start_cylinder} = $_->{start} / partition_table::cylinder_size($hd) - $sector; pack($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, + 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 => $hd->{geom}{cylinders}, + secpercyl => partition_table::cylinder_size($hd), + 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 }; - - $info; } sub clear_raw { my ($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; + { raw => [ ({}) x $nb_primary ], info => info($hd) }; } 1; |