no_comment

1 files changed, 128 insertions, 0 deletions

diff --git a/perl-install/partition_table_sun.pm b/perl-install/partition_table_sun.pm
new file mode 100644
index 000000000..5c8fc749f
--- /dev/null
+++ b/perl-install/partition_table_sun.pm
@@ -0,0 +1,128 @@
+package partition_table_sun;
+
+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;
+
+#- very bad and rough handling :(
+my %typeToDos = (
+  5 => 0,
+);
+my %typeFromDos = reverse %typeToDos;
+
+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, $format2) = ("x C x C", "N N");
+my ($size1, $size2) = map { psizeof($_) } ($format1, $format2);
+my $magic = 0xDABE;
+my $nb_primary = 8;
+my $offset = 0;
+
+sub read($$) {
+    my ($hd, $sector) = @_;
+    my $tmp;
+
+    local *F; partition_table_raw::openit($hd, *F) or die "failed to open device";
+    c::lseek_sector(fileno(F), $sector, $offset) or die "reading of partition in sector $sector failed";
+
+    sysread F, $tmp, psizeof($main_format) or die "error while reading partition table in sector $sector";
+    my %info; @info{@$main_fields} = unpack $main_format, $tmp;
+
+    #- check magic number
+    $info{magic}  == $magic or die "bad magic number";
+
+    @{$hd->{geom}}{qw(cylinders heads sectors)} = @info{qw(ncyl nsect ntrks)};
+
+    #- TODO verify checksum
+    my @pt = mapn {
+	my %h; 
+	@h{@$fields1} = unpack $format1, $_[0];
+	@h{@$fields2} = unpack $format2, $_[1];
+	$h{start} = $sector + $h{start_cylinder} * partition_table::cylinder_size($hd);
+	$h{type} = $typeToDos{$h{type}} || $h{type};
+	$h{size} or $h{$_} = 0 foreach keys %h;
+	\%h;
+    } [ $info{infos} =~ /(.{$size1})/g ], [ $info{partitions} =~ /(.{$size2})/g ];
+
+    [ @pt ], \%info;
+}
+
+# write the partition table (and extended ones)
+# for each entry, it uses fields: start, size, type, active
+sub write($$$;$) {
+    my ($hd, $sector, $pt, $info) = @_;
+
+    local *F; partition_table_raw::openit($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 {
+	$_->{start} % partition_table::cylinder_size($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;
+
+    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 => $hd->{geom}{cylinders},
+      secpercyl => partition_table::cylinder_size($hd),
+      secprtunit => $hd->{geom}{totalsectors},
+      rpm => 3600,
+      interleave => 1,
+      trackskew => 0,
+      cylskew => 0,
+      headswitch => 0,
+      trkseek => 0,
+      bbsize => 8192, #- size of boot area, with label
+      sbsize => 8192, #- max size of fs superblock
+    };
+}
+
+sub clear_raw {
+    my ($hd) = @_;
+    { raw => [ ({}) x $nb_primary ], info => info($hd) };
+}
+
+1;