diff options
Diffstat (limited to 'perl-install/partition_table_dos.pm')
| -rw-r--r-- | perl-install/partition_table_dos.pm | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/perl-install/partition_table_dos.pm b/perl-install/partition_table_dos.pm index 0358be6de..00ee589b9 100644 --- a/perl-install/partition_table_dos.pm +++ b/perl-install/partition_table_dos.pm @@ -23,19 +23,24 @@ sub hasExtended { 1 } sub compute_CHS($$) { my ($hd, $e) = @_; my @l = qw(cyl head sec); - @$e{map { "start_$_" } @l} = $e->{start} || $e->{type} ? CHS2rawCHS(sector2CHS($hd, $e->{start})) : (0,0,0); - @$e{map { "end_$_" } @l} = $e->{start} || $e->{type} ? CHS2rawCHS(sector2CHS($hd, $e->{start} + $e->{size} - 1)) : (0,0,0); + @$e{map { "start_$_" } @l} = $e->{start} || $e->{type} ? CHS2rawCHS($hd, sector2CHS($hd, $e->{start})) : (0,0,0); + @$e{map { "end_$_" } @l} = $e->{start} || $e->{type} ? CHS2rawCHS($hd, sector2CHS($hd, $e->{start} + $e->{size} - 1)) : (0,0,0); 1; } -sub CHS2rawCHS($$$) { - my ($c, $h, $s) = @_; - $c = min($c, 1023); #- no way to have a #cylinder >= 1024 +sub CHS2rawCHS { + my ($hd, $c, $h, $s) = @_; + if ($c > 1023) { + #- no way to have a #cylinder >= 1024 + $c = 1023; + $h = $hd->{geom}{heads} - 1; + $s = $hd->{geom}{sectors}; + } ($c & 0xff, $h, $s | ($c >> 2 & 0xc0)); } # returns (cylinder, head, sector) -sub sector2CHS($$) { +sub sector2CHS { my ($hd, $start) = @_; my ($s, $h); ($start, $s) = divide($start, $hd->{geom}{sectors}); @@ -43,7 +48,7 @@ sub sector2CHS($$) { ($start, $h, $s + 1); } -sub read($$) { +sub read { my ($hd, $sector) = @_; my $tmp; |