diff options
Diffstat (limited to 'perl-install/partition_table_dos.pm')
-rw-r--r-- | perl-install/partition_table_dos.pm | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/perl-install/partition_table_dos.pm b/perl-install/partition_table_dos.pm deleted file mode 100644 index ced50826f..000000000 --- a/perl-install/partition_table_dos.pm +++ /dev/null @@ -1,99 +0,0 @@ -package partition_table_dos; # $Id$ - -use diagnostics; -use strict; -use vars qw(@ISA); - -@ISA = qw(partition_table_raw); - -use common; -use partition_table_raw; -use partition_table; -use c; - -my @fields = qw(active start_head start_sec start_cyl type end_head end_sec end_cyl start size); -my $format = "C8 V2"; -my $magic = "\x55\xAA"; -my $nb_primary = 4; - -my $offset = $common::SECTORSIZE - length($magic) - $nb_primary * common::psizeof($format); - -sub hasExtended { 1 } - -sub compute_CHS($$) { - my ($hd, $e) = @_; - my @l = qw(cyl head sec); - @$e{map { "start_$_" } @l} = $e->{start} || $e->{type} ? CHS2rawCHS($hd, sector2CHS($hd, $e->{start})) : (0,0,0); - @$e{map { "end_$_" } @l} = $e->{start} || $e->{type} ? CHS2rawCHS($hd, sector2CHS($hd, $e->{start} + $e->{size} - 1)) : (0,0,0); - 1; -} - -sub CHS2rawCHS { - my ($hd, $c, $h, $s) = @_; - if ($c > 1023) { - #- no way to have a #cylinder >= 1024 - $c = 1023; - $h = $hd->{geom}{heads} - 1; - $s = $hd->{geom}{sectors}; - } - ($c & 0xff, $h, $s | ($c >> 2 & 0xc0)); -} - -# returns (cylinder, head, sector) -sub sector2CHS { - my ($hd, $start) = @_; - my ($s, $h); - ($start, $s) = divide($start, $hd->{geom}{sectors}); - ($start, $h) = divide($start, $hd->{geom}{heads}); - ($start, $h, $s + 1); -} - -sub read { - my ($hd, $sector) = @_; - my $tmp; - - local *F; partition_table_raw::openit($hd, *F) or die "failed to open device"; - c::lseek_sector(fileno(F), $sector, $offset) or die "reading of partition in sector $sector failed"; - - my @pt = map { - sysread F, $tmp, psizeof($format) or die "error while reading partition table in sector $sector"; - my %h; @h{@fields} = unpack $format, $tmp; - \%h; - } (1..$nb_primary); - - #- check magic number - sysread F, $tmp, length $magic or die "error reading magic number on disk $hd->{device}"; - $tmp eq $magic or die "bad magic number on disk $hd->{device}"; - - [ @pt ]; -} - -# write the partition table (and extended ones) -# for each entry, it uses fields: start, size, type, active -sub write($$$;$) { - my ($hd, $sector, $pt) = @_; - - #- handle testing for writing partition table on file only! - local *F; - if ($::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, $offset) or return 0; - } - - @$pt == $nb_primary or die "partition table does not have $nb_primary entries"; - foreach (@$pt) { - compute_CHS($hd, $_); - local $_->{start} = $_->{local_start} || 0; - $_->{active} ||= 0; $_->{type} ||= 0; $_->{size} ||= 0; #- for no warning - syswrite F, pack($format, @$_{@fields}), psizeof($format) or return 0; - } - syswrite F, $magic, length $magic or return 0; - 1; -} - -sub clear_raw { { raw => [ ({}) x $nb_primary ] } } - -1; |