package partition_table_raw; use diagnostics; use strict; use common qw(:common :system :file); use devices; use c; my @MBR_signatures = ( [ 'empty', 0, "\0\0\0\0" ], [ 'lilo', 0x2, "LILO" ], [ 'lilo', 0x6, "LILO" ], [ 'osbs', 0x2, "OSBS" ], #- http://www.prz.tu-berlin.de/~wolf/os-bs.html [ 'pqmagic', 0xef, "PQV" ], [ 'BootStar', 0x130, "BootStar:" ], [ 'DocsBoot', 0x148, 'DocsBoot' ], [ 'system_commander', 0x1ad, "SYSCMNDRSYS" ], [ 'Be Os', 0x24, 'Boot Manager' ], [ 'TimO', 0, 'IBM Thinkpad hibernation partition' ], [ 'os2', 0x1c2, "\xA" ], [ 'dos', 0xa0, "\x25\x03\x4E\x02\xCD\x13" ], [ 'dos', 0x60, "\xBB\x00\x7C\xB8\x01\x02\x57\xCD\x13\x5F\x73\x0C\x33\xC0\xCD\x13" ], #- nt's [ 'freebsd', 0xC0, "\x00\x30\xE4\xCD\x16\xCD\x19\xBB\x07\x00\xB4" ], [ 'dummy', 0xAC, "\x0E\xB3\x07\x56\xCD\x10\x5E\xEB" ], #- caldera? [ 'ranish', 0x100, "\x6A\x10\xB4\x42\x8B\xF4\xCD\x13\x8B\xE5\x73" ], ); sub typeOfMBR($) { typeFromMagic(devices::make($_[0]), @MBR_signatures) } sub typeOfMBR_($) { typeFromMagic($_[0], @MBR_signatures) } sub hasExtended { 0 } sub get_geometry($) { my ($dev) = @_; my $g = ""; local *F; sysopen F, $dev, 0 or return; ioctl(F, c::HDIO_GETGEO(), $g) or return; my %geom; @geom{qw(heads sectors cylinders start)} = unpack "CCSL", $g; #- handle this strange but necessary reduction of visible cylinders on sparc, assume 2 for instance. $geom{total_cylinders} = $geom{cylinders}; $geom{cylinders} -= 2 if arch() =~ /^sparc/; { geom => \%geom, totalsectors => $geom{heads} * $geom{sectors} * $geom{cylinders} }; } sub openit($$;$) { sysopen $_[1], $_[0]{file}, $_[2] || 0; } # cause kernel to re-read partition table sub kernel_read($) { my ($hd) = @_; local *F; openit($hd, *F) or return 0; $hd->{rebootNeeded} = !ioctl(F, c::BLKRRPART(), 0); } sub zero_MBR($) { my ($hd) = @_; # unless (ref($hd) =~ /partition_table/) { my $type = arch() eq "alpha" ? "bsd" : arch() =~ /^sparc/ ? "sun" : "dos"; bless $hd, "partition_table_$type"; # } $hd->{isDirty} = $hd->{needKernelReread} = 1; $hd->{primary} = $hd->clear_raw(); delete $hd->{extended}; } 1;