package partition_table; # $Id$ use diagnostics; use strict; use vars qw(@ISA %EXPORT_TAGS @EXPORT_OK @important_types @important_types2 @fields2save @bad_types); @ISA = qw(Exporter); %EXPORT_TAGS = ( types => [ qw(pt_type2name type2fs name2pt_type fs2pt_type isExtended isExt2 isThisFs isTrueLocalFS isTrueFS isSwap isDos isWin isFat isFat_or_NTFS isSunOS isOtherAvailableFS isPrimary isRawLVM isRawRAID isRAID isLVM isMountableRW isNonMountable isPartOfLVM isPartOfRAID isPartOfLoopback isLoopback isMounted isBusy isSpecial maybeFormatted isApple isAppleBootstrap isEfi) ], ); @EXPORT_OK = map { @$_ } values %EXPORT_TAGS; use common; use partition_table::raw; use detect_devices; use log; @important_types = ('Linux native', 'Linux swap', 'Journalised FS: ext3', 'Journalised FS: ReiserFS', if_(arch() =~ /ppc/, 'Journalised FS: JFS', 'Journalised FS: XFS', 'Apple HFS Partition', 'Apple Bootstrap'), if_(arch() =~ /i.86/, 'Journalised FS: JFS', 'Journalised FS: XFS', 'FAT32'), if_(arch() =~ /ia64/, 'Journalised FS: XFS', 'FAT32'), if_(arch() =~ /x86_64/, 'FAT32'), ); @important_types2 = ('Linux RAID', 'Linux Logical Volume Manager partition'); @fields2save = qw(primary extended totalsectors isDirty will_tell_kernel); @bad_types = ('Empty', 'DOS 3.3+ Extended Partition', 'Win95: Extended partition, LBA-mapped', 'Linux extended partition'); my %pt_types = ( 0x0 => 'Empty', if_(arch() =~ /^ppc/, 0x183 => 'Journalised FS: ReiserFS', 0x283 => 'Journalised FS: XFS', 0x383 => 'Journalised FS: JFS', 0x483 => 'Journalised FS: ext3', 0x401 => 'Apple Partition', 0x401 => 'Apple Bootstrap', 0x402 => 'Apple HFS Partition', ), if_(arch() =~ /^i.86/, 0x107 => 'NTFS', 0x183 => 'Journalised FS: ReiserFS', 0x283 => 'Journalised FS: XFS', 0x383 => 'Journalised FS: JFS', 0x483 => 'Journalised FS: ext3', ), if_(arch() =~ /^ia64/, 0x100 => 'Various', 0x183 => 'Journalised FS: ReiserFS', 0x283 => 'Journalised FS: XFS', 0x483 => 'Journalised FS: ext3', ), if_(arch() =~ /^x86_64/, 0x183 => 'Journalised FS: ReiserFS', 0x483 => 'Journalised FS: ext3', ), if_(arch() =~ /^sparc/, 0x1 => 'SunOS boot', 0x2 => 'SunOS root', 0x3 => 'SunOS swap', 0x4 => 'SunOS usr', 0x5 => 'Whole disk', 0x6 => 'SunOS stand', 0x7 => 'SunOS var', 0x8 => 'SunOS home', ), if_(arch() =~ /^i.86/, 0x1 => 'DOS 12-bit FAT', 0x2 => 'XENIX root', 0x3 => 'XENIX /usr', 0x4 => 'DOS 16-bit FAT (up to 32M)', 0x5 => 'DOS 3.3+ Extended Partition', 0x6 => 'DOS FAT16', 0x7 => 'NTFS (or HPFS)', 0x8 => 'OS/2 (v1.0-1.3 only) / AIX boot partition / SplitDrive / Commodore DOS / DELL partition spanning multiple drives / QNX 1.x and 2.x ("qny")', ), 0x9 => 'AIX data partition / Coherent filesystem / QNX 1.x and 2.x ("qnz")', 0xa => 'OS/2 Boot Manager / Coherent swap partition / OPUS', 0xb => 'FAT32', 0xc => 'Win98 FAT32, LBA-mapped', 0xe => 'Win95: DOS 16-bit FAT, LBA-mapped', 0xf => 'Win95: Extended partition, LBA-mapped', 0x10 => 'OPUS (?)', 0x11 => 'Hidden DOS 12-bit FAT', 0x12 => 'Compaq/HP config partition', 0x14 => 'Hidden DOS 16-bit FAT <32M', 0x16 => 'Hidden DOS 16-bit FAT >=32M', 0x17 => 'Hidden IFS (e.g., HPFS)', 0x18 => 'AST Windows swapfile', 0x1b => 'Hidden WIN95 OSR2 32-bit FAT', 0x1c => 'Hidden WIN95 OSR2 32-bit FAT, LBA-mapped', 0x1e => 'Hidden FAT95', 0x22 => 'Used for Oxygen Extended Partition Table by ekstazya@sprint.ca.', 0x24 => 'NEC DOS 3.x', 0x35 => 'JFS (OS/2)', 0x38 => 'THEOS ver 3.2 2gb partition', 0x39 => 'THEOS ver 4 spanned partition', 0x3a => 'THEOS ver 4 4gb partition', 0x3b => 'THEOS ver 4 extended partition', 0x3c => 'PartitionMagic recovery partition', 0x40 => 'Venix 80286', 0x41 => 'Linux/MINIX (sharing disk with DRDOS) / Personal RISC Boot / PPC PReP (Power PC Reference Platform) Boot', 0x42 => 'Windows Dynamic Partition', 0x43 => 'Linux native (sharing disk with DRDOS)', 0x45 => 'EUMEL/Elan', 0x46 => 'EUMEL/Elan 0x46', 0x47 => 'EUMEL/Elan 0x47', 0x48 => 'EUMEL/Elan 0x48', 0x4d => 'QNX4.x', 0x4e => 'QNX4.x 2nd part', 0x4f => 'QNX4.x 3rd part / Oberon partition', 0x50 => 'OnTrack Disk Manager (older versions) RO', 0x51 => 'OnTrack Disk Manager RW (DM6 Aux1) / Novell', 0x52 => 'CP/M / Microport SysV/AT', 0x53 => 'Disk Manager 6.0 Aux3', 0x54 => 'Disk Manager 6.0 Dynamic Drive Overlay', 0x55 => 'EZ-Drive', 0x56 => 'Golden Bow VFeature Partitioned Volume. / DM converted to EZ-BIOS', 0x57 => 'DrivePro', 0x5c => 'Priam EDisk', 0x61 => 'SpeedStor', 0x63 => 'Unix System V (SCO, ISC Unix, UnixWare, ...), Mach, GNU Hurd', 0x64 => 'PC-ARMOUR protected partition / Novell Netware 2.xx', 0x65 => 'Novell Netware 3.xx or 4.xx', 0x67 => 'Novell', 0x68 => 'Novell 0x68', 0x69 => 'Novell 0x69', 0x70 => 'DiskSecure Multi-Boot', 0x75 => 'IBM PC/IX', 0x80 => 'MINIX until 1.4a', 0x81 => 'MINIX since 1.4b, early Linux / Mitac disk manager', 0x82 => 'Linux swap', 0x83 => 'Linux native', 0x84 => 'OS/2 hidden C: drive / Hibernation partition', 0x85 => 'Linux extended partition', 0x86 => 'Old Linux RAID partition superblock / NTFS volume set', 0x87 => 'NTFS volume set', 0x8a => 'Linux Kernel Partition (used by AiR-BOOT)', 0x8e => 'Linux Logical Volume Manager partition', 0x93 => 'Amoeba', 0x94 => 'Amoeba bad block table', 0x99 => 'DCE376 logical drive', 0xa0 => 'IBM Thinkpad hibernation partition / Phoenix NoteBIOS Power Management "Save-to-Disk" partition', 0xa5 => 'BSD/386, 386BSD, NetBSD, FreeBSD', 0xa6 => 'OpenBSD', 0xa7 => 'NEXTSTEP', 0xa9 => 'NetBSD', 0xaa => 'Olivetti Fat 12 1.44Mb Service Partition', 0xb7 => 'BSDI filesystem', 0xb8 => 'BSDI swap partition', 0xbe => 'Solaris boot partition', 0xc0 => 'CTOS / REAL/32 secure small partition', 0xc1 => 'DRDOS/secured (FAT-12)', 0xc4 => 'DRDOS/secured (FAT-16, < 32M)', 0xc6 => 'DRDOS/secured (FAT-16, >= 32M) / Windows NT corrupted FAT16 volume/stripe set', 0xc7 => 'Windows NT corrupted NTFS volume/stripe set / Syrinx boot', 0xcb => 'reserved for DRDOS/secured (FAT32)', 0xcc => 'reserved for DRDOS/secured (FAT32, LBA)', 0xcd => 'CTOS Memdump?', 0xce => 'reserved for DRDOS/secured (FAT16, LBA)', 0xd0 => 'REAL/32 secure big partition', 0xd1 => 'Old Multiuser DOS secured FAT12', 0xd4 => 'Old Multiuser DOS secured FAT16 <32M', 0xd5 => 'Old Multiuser DOS secured extended partition', 0xd6 => 'Old Multiuser DOS secured FAT16 >=32M', 0xd8 => 'CP/M-86', 0xdb => 'Digital Research CP/M, Concurrent CP/M, Concurrent DOS / CTOS (Convergent Technologies OS -Unisys) / KDG Telemetry SCPU boot', 0xdd => 'Hidden CTOS Memdump?', 0xe1 => 'DOS access or SpeedStor 12-bit FAT extended partition', 0xe3 => 'DOS R/O or SpeedStor', 0xe4 => 'SpeedStor 16-bit FAT extended partition < 1024 cyl.', 0xeb => 'BeOS', 0xee => 'EFI GPT', 0xef => 'EFI (FAT-12/16/32)', 0xf1 => 'SpeedStor 0xf1', 0xf2 => 'DOS 3.3+ secondary partition', 0xf4 => 'SpeedStor large partition / Prologue single-volume partition', 0xf5 => 'Prologue multi-volume partition', 0xfd => 'Linux RAID', 0xfe => 'SpeedStor > 1024 cyl. or LANstep / IBM PS/2 IML (Initial Microcode Load) partition, located at the end of the disk. / Windows NT Disk Administrator hidden partition / Linux Logical Volume Manager partition (old)', 0xff => 'Xenix Bad Block Table', ); my %pt_type2fs = ( arch() =~ /^ppc/ ? ( 0x07 => 'hpfs', ) : ( 0x07 => 'ntfs', ), arch() !~ /sparc/ ? ( 0x01 => 'vfat', 0x04 => 'vfat', 0x05 => 'ignore', 0x06 => 'vfat', ) : ( 0x01 => 'ufs', 0x02 => 'ufs', 0x04 => 'ufs', 0x06 => 'ufs', 0x07 => 'ufs', 0x08 => 'ufs', ), 0x0b => 'vfat', 0x0c => 'vfat', 0x0e => 'vfat', 0x1b => 'vfat', 0x1c => 'vfat', 0x1e => 'vfat', 0x82 => 'swap', 0x83 => 'ext2', 0xeb => 'befs', 0xef => 'vfat', 0x107 => 'ntfs', 0x183 => 'reiserfs', 0x283 => 'xfs', 0x383 => 'jfs', 0x483 => 'ext3', 0x401 => 'apple', 0x402 => 'hfs', ); my %pt_types_rev = reverse %pt_types; my %fs2pt_type = reverse %pt_type2fs; 1; sub important_types() { my @l = (@important_types, if_($::expert, @important_types2, sort values %pt_types)); difference2(\@l, \@bad_types); } sub type2fs { my ($part, $o_default) = @_; my $pt_type = $part->{pt_type}; $pt_type2fs{$pt_type} || $pt_type =~ /^(\d+)$/ && $o_default || $pt_type; } sub fs2pt_type { $fs2pt_type{$_[0]} || $_[0] } sub pt_type2name { $pt_types{$_[0]} || $_[0] } sub name2pt_type { local ($_) = @_; /0x(.*)/ ? hex $1 : $pt_types_rev{$_} || $_; } #sub name2type { { pt_type => name2pt_type($_[0]) } } sub isEfi { arch() =~ /ia64/ && $_[0]{pt_type} == 0xef } sub isWholedisk { arch() =~ /^sparc/ && $_[0]{pt_type} == 5 } sub isExtended { arch() !~ /^sparc/ && ($_[0]{pt_type} == 5 || $_[0]{pt_type} == 0xf || $_[0]{pt_type} == 0x85) } sub isRawLVM { $_[0]{pt_type} == 0x8e } sub isRawRAID { $_[0]{pt_type} == 0xfd } sub isSwap { type2fs($_[0]) eq 'swap' } sub isExt2 { type2fs($_[0]) eq 'ext2' } sub isDos { arch() !~ /^sparc/ && ${{ 1 => 1, 4 => 1, 6 => 1 }}{$_[0]{pt_type}} } sub isWin { ${{ 0xb => 1, 0xc => 1, 0xe => 1, 0x1b => 1, 0x1c => 1, 0x1e => 1 }}{$_[0]{pt_type}} } sub isFat { isDos($_[0]) || isWin($_[0]) } sub isFat_or_NTFS { isDos($_[0]) || isWin($_[0]) || $_[0]{pt_type} == 0x107 } sub isSunOS { arch() =~ /sparc/ && ${{ 0x1 => 1, 0x2 => 1, 0x4 => 1, 0x6 => 1, 0x7 => 1, 0x8 => 1 }}{$_[0]{pt_type}} } sub isApple { type2fs($_[0]) eq 'apple' && defined $_[0]{isDriver} } sub isAppleBootstrap { type2fs($_[0]) eq 'apple' && defined $_[0]{isBoot} } sub isHiddenMacPart { defined $_[0]{isMap} } sub isThisFs { type2fs($_[1]) eq $_[0] } sub isTrueFS { isTrueLocalFS($_[0]) || member(type2fs($_[0]), qw(nfs)) } sub isTrueLocalFS { member(type2fs($_[0]), qw(ext2 reiserfs xfs jfs ext3)) } sub isOtherAvailableFS { isEfi($_[0]) || isFat_or_NTFS($_[0]) || isSunOS($_[0]) || isThisFs('hfs', $_[0]) } #- other OS that linux can access its filesystem sub isMountableRW { (isTrueFS($_[0]) || isOtherAvailableFS($_[0])) && !isThisFs('ntfs', $_[0]) } sub isNonMountable { my ($part) = @_; isRawRAID($part) || isRawLVM($part) || isThisFs("ntfs", $part) && !$part->{isFormatted} && $part->{notFormatted}; } sub isPartOfLVM { defined $_[0]{lvm} } sub isPartOfRAID { defined $_[0]{raid} } sub isPartOfLoopback { defined $_[0]{loopback} } sub isRAID { $_[0]{device} =~ /^md/ } sub isUBD { $_[0]{device} =~ /^ubd/ } #- should be always true during an $::uml_install sub isLVM { $_[0]{VG_name} } sub isLoopback { defined $_[0]{loopback_file} } sub isMounted { $_[0]{isMounted} } sub isBusy { isMounted($_[0]) || isPartOfRAID($_[0]) || isPartOfLVM($_[0]) || isPartOfLoopback($_[0]) } sub isSpecial { isRAID($_[0]) || isLVM($_[0]) || isLoopback($_[0]) || isUBD($_[0]) } sub maybeFormatted { $_[0]{isFormatted} || !$_[0]{notFormatted} } #- works for both hard drives and partitions ;p sub description { my ($hd) = @_; my $win = $hd->{device_windobe}; sprintf "%s%s (%s%s%s%s)", $hd->{device}, $win && " [$win:]", formatXiB($hd->{totalsectors} || $hd->{size}, 512), $hd->{info} && ", $hd->{info}", $hd->{mntpoint} && ", " . $hd->{mntpoint}, $hd->{pt_type} && ", " . pt_type2name($hd->{pt_type}); } sub isPrimary { my ($part, $hd) = @_; foreach (@{$hd->{primary}{raw}}) { $part eq $_ and return 1 } 0; } sub adjustStartAndEnd { my ($hd, $part) = @_; $hd->adjustStart($part); $hd->adjustEnd($part); } sub verifyNotOverlap { my ($a, $b) = @_; $a->{start} + $a->{size} <= $b->{start} || $b->{start} + $b->{size} <= $a->{start}; } sub verifyInside { my ($a, $b) = @_; $b->{start} <= $a->{start} && $a->{start} + $a->{size} <= $b->{start} + $b->{size}; } sub verifyParts_ { foreach my $i (@_) { foreach (@_) { next if !$i || !$_ || $i == $_ || isWholedisk($i) || isExtended($i); #- avoid testing twice for simplicity :-) if (isWholedisk($_)) { verifyInside($i, $_) or cdie sprintf("partition sector #$i->{start} (%s) is not inside whole disk (%s)!", formatXiB($i->{size}, 512), formatXiB($_->{size}, 512)); } elsif (isExtended($_)) { verifyNotOverlap($i, $_) or log::l(sprintf("warning partition sector #$i->{start} (%s) is overlapping with extended partition!", formatXiB($i->{size}, 512))); #- only warning for this one is acceptable } else { verifyNotOverlap($i, $_) or cdie sprintf("partitions sector #$i->{start} (%s) and sector #$_->{start} (%s) are overlapping!", formatXiB($i->{size}, 512), formatXiB($_->{size}, 512)); } } } } sub verifyParts { my ($hd) = @_; verifyParts_(get_normal_parts($hd)); } sub verifyPrimary { my ($pt) = @_; $_->{start} > 0 || arch() =~ /^sparc/ || die "partition must NOT start at sector 0" foreach @{$pt->{normal}}; verifyParts_(@{$pt->{normal}}, $pt->{extended}); } sub assign_device_numbers { my ($hd) = @_; my $i = 1; my $start = 1; #- on PPC we need to assign device numbers to the holes too - big FUN! #- not if it's an IBM machine using a DOS partition table though if (arch() =~ /ppc/ && detect_devices::get_mac_model() !~ /^IBM/) { #- first sort the normal parts $hd->{primary}{normal} = [ sort { $a->{start} <=> $b->{start} } @{$hd->{primary}{normal}} ]; #- now loop through them, assigning partition numbers - reserve one for the holes foreach (@{$hd->{primary}{normal}}) { if ($_->{start} > $start) { log::l("PPC: found a hole on $hd->{prefix} before $_->{start}, skipping device..."); $i++; } $_->{device} = $hd->{prefix} . $i; $_->{devfs_device} = $hd->{devfs_prefix} . '/part' . $i; $start = $_->{start} + $_->{size}; $i++; } } else { foreach (@{$hd->{primary}{raw}}) { $_->{device} = $hd->{prefix} . $i; $_->{devfs_device} = $hd->{devfs_prefix} . '/part' . $i; $i++; } foreach (map { $_->{normal} } @{$hd->{extended} || []}) { my $dev = $hd->{prefix} . $i; my $renumbered = $_->{device} && $dev ne $_->{device}; if ($renumbered) { require fs; eval { fs::umount_part($_) }; #- at least try to umount it will_tell_kernel($hd, del => $_, 'delay_del'); push @{$hd->{partitionsRenumbered}}, [ $_->{device}, $dev ]; } $_->{device} = $dev; $_->{devfs_device} = $hd->{devfs_prefix} . '/part' . $i; if ($renumbered) { will_tell_kernel($hd, add => $_, 'delay_add'); } $i++; } } #- try to figure what the windobe drive letter could be! # #- first verify there's at least one primary dos partition, otherwise it #- means it is a secondary disk and all will be false :( #- #- isFat_or_NTFS isn't true for 0x7 partitions, only for 0x107. #- alas 0x107 is not set correctly at this stage #- solution: don't bother with 0x7 vs 0x107 here my ($c, @others) = grep { isFat_or_NTFS($_) || $_->{pt_type} == 0x7 || $_->{pt_type} == 0x17 } @{$hd->{primary}{normal}}; $i = ord 'C'; $c->{device_windobe} = chr($i++) if $c; $_->{device_windobe} = chr($i++) foreach grep { isFat_or_NTFS($_) || $_->{pt_type} == 0x7 || $_->{pt_type} == 0x17 } map { $_->{normal} } @{$hd->{extended}}; $_->{device_windobe} = chr($i++) foreach @others; } sub remove_empty_extended { my ($hd) = @_; my $last = $hd->{primary}{extended} or return; @{$hd->{extended}} = grep { if ($_->{normal}) { $last = $_; } else { %{$last->{extended}} = $_->{extended} ? %{$_->{extended}} : (); } $_->{normal}; } @{$hd->{extended}}; adjust_main_extended($hd); } sub adjust_main_extended { my ($hd) = @_; if (!is_empty_array_ref $hd->{extended}) { my ($l, @l) = @{$hd->{extended}}; # the first is a special case, must recompute its real size my $start = round_down($l->{normal}{start} - 1, $hd->{geom}{sectors}); my $end = $l->{normal}{start} + $l->{normal}{size}; my $only_linux = 1; my $has_win_lba = 0; foreach (map { $_->{normal} } $l, @l) { $start = min($start, $_->{start}); $end = max($end, $_->{start} + $_->{size}); $only_linux &&= isTrueLocalFS($_) || isSwap($_); $has_win_lba ||= $_->{pt_type} == 0xc || $_->{pt_type} == 0xe; } $l->{start} = $hd->{primary}{extended}{start} = $start; $l->{size} = $hd->{primary}{extended}{size} = $end - $start; } if (!@{$hd->{extended} || []} && $hd->{primary}{extended}) { will_tell_kernel($hd, del => $hd->{primary}{extended}); %{$hd->{primary}{extended}} = (); #- modify the raw entry delete $hd->{primary}{extended}; } verifyParts($hd); #- verify everything is all right } sub adjust_local_extended { my ($hd, $part) = @_; my $extended = find { $_->{normal} == $part } @{$hd->{extended} || []} or return; $extended->{size} = $part->{size} + $part->{start} - $extended->{start}; #- must write it there too because values are not shared my $prev = find { $_->{extended}{start} == $extended->{start} } @{$hd->{extended} || []} or return; $prev->{extended}{size} = $part->{size} + $part->{start} - $prev->{extended}{start}; } sub get_normal_parts { my ($hd) = @_; @{$hd->{primary}{normal} || []}, map { $_->{normal} } @{$hd->{extended} || []} } sub get_normal_parts_and_holes { my ($hd) = @_; my ($start, $last) = ($hd->first_usable_sector, $hd->last_usable_sector); ref($hd) or print("get_normal_parts_and_holes: bad hd" . backtrace(), "\n"); my @l = map { my $current = $start; $start = $_->{start} + $_->{size}; my $hole = { start => $current, size => $_->{start} - $current, pt_type => 0, rootDevice => $hd->{device} }; $hole, $_; } sort { $a->{start} <=> $b->{start} } grep { !isWholedisk($_) } get_normal_parts($hd); push @l, { start => $start, size => $last - $start, pt_type => 0, rootDevice => $hd->{device} }; grep { $_->{pt_type} || $_->{size} >= $hd->cylinder_size } @l; } sub read_one($$) { my ($hd, $sector) = @_; my ($pt, $info); #- it can be safely considered that the first sector is used to probe the partition table #- but other sectors (typically for extended partition ones) have to match this type! if (!$sector) { my @parttype = ( if_(arch() =~ /^ia64/, 'gpt'), arch() =~ /^sparc/ ? ('sun', 'bsd') : ('dos', 'bsd', 'sun', 'mac'), ); foreach ('empty', @parttype, 'lvm_PV', 'unknown') { /unknown/ and die "unknown partition table format on disk " . $hd->{file}; eval { # perl_checker: require partition_table::bsd # perl_checker: require partition_table::dos # perl_checker: require partition_table::empty # perl_checker: require partition_table::gpt # perl_checker: require partition_table::lvm_PV # perl_checker: require partition_table::mac # perl_checker: require partition_table::sun require "partition_table/$_.pm"; bless $hd, "partition_table::$_"; ($pt, $info) = $hd->read($sector); log::l("found a $_ partition table on $hd->{file} at sector $sector"); }; $@ or last; } } else { #- keep current blessed object for that, this means it is neccessary to read sector 0 before. ($pt, $info) = $hd->read($sector); } my @extended = $hd->hasExtended ? grep { isExtended($_) } @$pt : (); my @normal = grep { $_->{size} && $_->{pt_type} && !isExtended($_) } @$pt; my $nb_special_empty = int(grep { $_->{size} && $_->{pt_type} == 0 } @$pt); @extended > 1 and die "more than one extended partition"; $_->{rootDevice} = $hd->{device} foreach @normal, @extended; { raw => $pt, extended => $extended[0], normal => \@normal, info => $info, nb_special_empty => $nb_special_empty }; } sub read { my ($hd) = @_; my $pt = read_one($hd, 0) or return 0; $hd->{primary} = $pt; undef $hd->{extended}; verifyPrimary($pt); eval { my $need_removing_empty_extended; if ($pt->{extended}) { read_extended($hd, $pt->{extended}, \$need_removing_empty_extended) or return 0; } if ($need_removing_empty_extended) { #- special case when hda5 is empty, it must be skipped #- (windows XP generates such partition tables) remove_empty_extended($hd); #- includes adjust_main_extended } }; die "extended partition: $@" if $@; assign_device_numbers($hd); remove_empty_extended($hd); $hd->set_best_geometry_for_the_partition_table; 1; } sub read_extended { my ($hd, $extended, $need_removing_empty_extended) = @_; my $pt = read_one($hd, $extended->{start}) or return 0; $pt = { %$extended, %$pt }; push @{$hd->{extended}}, $pt; @{$hd->{extended}} > 100 and die "oops, seems like we're looping here :( (or you have more than 100 extended partitions!)"; if (@{$pt->{normal}} == 0) { $$need_removing_empty_extended = 1; delete $pt->{normal}; print "need_removing_empty_extended\n"; } elsif (@{$pt->{normal}} > 1) { die "more than one normal partition in extended partition"; } else { $pt->{normal} = $pt->{normal}[0]; #- in case of extended partitions, the start sector is local to the partition or to the first extended_part! $pt->{normal}{start} += $pt->{start}; #- the following verification can broke an existing partition table that is #- correctly read by fdisk or cfdisk. maybe the extended partition can be #- recomputed to get correct size. if (!verifyInside($pt->{normal}, $extended)) { $extended->{size} = $pt->{normal}{start} + $pt->{normal}{size}; verifyInside($pt->{normal}, $extended) or die "partition $pt->{normal}{device} is not inside its extended partition"; } } if ($pt->{extended}) { $pt->{extended}{start} += $hd->{primary}{extended}{start}; return read_extended($hd, $pt->{extended}, $need_removing_empty_extended); } else { 1; } } sub will_tell_kernel { my ($hd, $action, $o_part, $o_delay) = @_; if ($action eq 'resize') { will_tell_kernel($hd, del => $o_part); will_tell_kernel($hd, add => $o_part); } else { my $part_number = sub { $o_part->{device} =~ /(\d+)$/ ? $1 : internal_error("bad device " . description($o_part)) }; push @{$hd->{'will_tell_kernel' . ($o_delay || '')} ||= []}, [ $action, $action eq 'force_reboot' ? () : $action eq 'add' ? ($part_number->(), $o_part->{start}, $o_part->{size}) : $action eq 'del' ? $part_number->() : internal_error("unknown action $action") ]; } if (!$o_delay) { foreach my $delay ('delay_del', 'delay_add') { my $l = delete $hd->{"will_tell_kernel$delay"} or next; push @{$hd->{will_tell_kernel} ||= []}, @$l; } } $hd->{isDirty} = 1; } sub tell_kernel { my ($hd, $tell_kernel) = @_; my $F = partition_table::raw::openit($hd); my $force_reboot = any { $_->[0] eq 'force_reboot' } @$tell_kernel; if (!$force_reboot) { foreach (@$tell_kernel) { my ($action, $part_number, $o_start, $o_size) = @$_; if ($action eq 'add') { $force_reboot ||= !c::add_partition(fileno $F, $part_number, $o_start, $o_size); } elsif ($action eq 'del') { $force_reboot ||= !c::del_partition(fileno $F, $part_number); } log::l("tell kernel $action ($part_number $o_start $o_size), rebootNeeded is now " . bool2text($hd->{rebootNeeded})); } } if ($force_reboot) { my @magic_parts = grep { $_->{isMounted} && $_->{real_mntpoint} } get_normal_parts($hd); foreach (@magic_parts) { syscall_('umount', $_->{real_mntpoint}) or log::l(N("error unmounting %s: %s", $_->{real_mntpoint}, $!)); } $hd->{rebootNeeded} = !ioctl($F, c::BLKRRPART(), 0); log::l("tell kernel force_reboot, rebootNeeded is now $hd->{rebootNeeded}."); foreach (@magic_parts) { syscall_('mount', $_->{real_mntpoint}, type2fs($_), c::MS_MGC_VAL()) or log::l(N("mount failed: ") . $!); } } } # write the partition table sub write { my ($hd) = @_; $hd->{isDirty} or return; $hd->{readonly} and die "a read-only partition table should not be dirty!"; #- set first primary partition active if no primary partitions are marked as active. if (my @l = @{$hd->{primary}{raw}}) { foreach (@l) { $_->{local_start} = $_->{start}; $_->{active} ||= 0; } $l[0]{active} = 0x80 if !any { $_->{active} } @l; } #- last chance for verification, this make sure if an error is detected, #- it will never be writed back on partition table. verifyParts($hd); $hd->write(0, $hd->{primary}{raw}, $hd->{primary}{info}) or die "writing of partition table failed"; #- should be fixed but a extended exist with no real extended partition, that blanks mbr! if (arch() !~ /^sparc/) { foreach (@{$hd->{extended}}) { # in case of extended partitions, the start sector must be local to the partition $_->{normal}{local_start} = $_->{normal}{start} - $_->{start}; $_->{extended} and $_->{extended}{local_start} = $_->{extended}{start} - $hd->{primary}{extended}{start}; $hd->write($_->{start}, $_->{raw}) or die "writing of partition table failed"; } } $hd->{isDirty} = 0; $hd->{hasBeenDirty} = 1; #- used in undo (to know if undo should believe isDirty or not) if (my $tell_kernel = delete $hd->{will_tell_kernel}) { tell_kernel($hd, $tell_kernel); } } sub active { my ($hd, $part) = @_; $_->{active} = 0 foreach @{$hd->{primary}{normal}}; $part->{active} = 0x80; $hd->{isDirty} = 1; } # remove a normal partition from hard drive hd sub remove { my ($hd, $part) = @_; my $i; #- first search it in the primary partitions $i = 0; foreach (@{$hd->{primary}{normal}}) { if ($_ eq $part) { will_tell_kernel($hd, del => $_); splice(@{$hd->{primary}{normal}}, $i, 1); %$_ = (); #- blank it $hd->raw_removed($hd->{primary}{raw}); return 1; } $i++; } my ($first, $second, $third) = map { $_->{normal} } @{$hd->{extended} || []}; if ($third && $first eq $part) { die "Can't handle removing hda5 when hda6 is not the second partition" if $second->{start} > $third->{start}; } #- otherwise search it in extended partitions foreach (@{$hd->{extended} || []}) { $_->{normal} eq $part or next; delete $_->{normal}; #- remove it remove_empty_extended($hd); assign_device_numbers($hd); will_tell_kernel($hd, del => $part); return 1; } 0; } # create of partition at starting at `start', of size `size' and of type `pt_type' (nice comment, uh?) sub add_primary { my ($hd, $part) = @_; { local $hd->{primary}{normal}; #- save it to fake an addition of $part, that way add_primary do not modify $hd if it fails push @{$hd->{primary}{normal}}, $part; adjust_main_extended($hd); #- verify $hd->raw_add($hd->{primary}{raw}, $part); } push @{$hd->{primary}{normal}}, $part; #- really do it } sub add_extended { arch() =~ /^sparc|ppc/ and die N("Extended partition not supported on this platform"); my ($hd, $part, $extended_type) = @_; $extended_type =~ s/Extended_?//; my $e = $hd->{primary}{extended}; if ($e && !verifyInside($part, $e)) { #-die "sorry, can't add outside the main extended partition" unless $::unsafe; my $end = $e->{start} + $e->{size}; my $start = min($e->{start}, $part->{start}); $end = max($end, $part->{start} + $part->{size}) - $start; { #- faking a resizing of the main extended partition to test for problems local $e->{start} = $start; local $e->{size} = $end - $start; eval { verifyPrimary($hd->{primary}) }; $@ and die N("You have a hole in your partition table but I can't use it. The only solution is to move your primary partitions to have the hole next to the extended partitions."); } } if ($e && $part->{start} < $e->{start}) { my $l = first(@{$hd->{extended}}); #- the first is a special case, must recompute its real size $l->{start} = round_down($l->{normal}{start} - 1, $hd->cylinder_size); $l->{size} = $l->{normal}{start} + $l->{normal}{size} - $l->{start}; my $ext = { %$l }; unshift @{$hd->{extended}}, { pt_type => 5, raw => [ $part, $ext, {}, {} ], normal => $part, extended => $ext }; #- size will be autocalculated :) } else { my ($ext, $ext_size) = is_empty_array_ref($hd->{extended}) ? ($hd->{primary}, -1) : #- -1 size will be computed by adjust_main_extended (top(@{$hd->{extended}}), $part->{size}); my %ext = (pt_type => $extended_type || 5, start => $part->{start}, size => $ext_size); $hd->raw_add($ext->{raw}, \%ext); $ext->{extended} = \%ext; push @{$hd->{extended}}, { %ext, raw => [ $part, {}, {}, {} ], normal => $part }; } $part->{start}++; $part->{size}--; #- let it start after the extended partition sector adjustStartAndEnd($hd, $part); adjust_main_extended($hd); } sub add { my ($hd, $part, $b_primaryOrExtended, $b_forceNoAdjust) = @_; get_normal_parts($hd) >= ($hd->{device} =~ /^rd/ ? 7 : $hd->{device} =~ /^(sd|ida|cciss|ataraid)/ ? 15 : 63) and cdie "maximum number of partitions handled by linux reached"; $part->{notFormatted} = 1; $part->{isFormatted} = 0; $part->{rootDevice} = $hd->{device}; $part->{start} ||= 1 if arch() !~ /^sparc/; #- starting at sector 0 is not allowed adjustStartAndEnd($hd, $part) unless $b_forceNoAdjust; my $nb_primaries = $hd->{device} =~ /^rd/ ? 3 : 1; if (arch() =~ /^sparc|ppc/ || $b_primaryOrExtended eq 'Primary' || $b_primaryOrExtended !~ /Extended/ && @{$hd->{primary}{normal} || []} < $nb_primaries) { eval { add_primary($hd, $part) }; goto success if !$@; } if ($hd->hasExtended) { eval { add_extended($hd, $part, $b_primaryOrExtended) }; goto success if !$@; } { add_primary($hd, $part); } success: assign_device_numbers($hd); will_tell_kernel($hd, add => $part); } # search for the next partition sub next { my ($hd, $part) = @_; first( sort { $a->{start} <=> $b->{start} } grep { $_->{start} >= $part->{start} + $part->{size} } get_normal_parts($hd) ); } sub next_start { my ($hd, $part) = @_; my $next = &next($hd, $part); $next ? $next->{start} : $hd->{totalsectors}; } sub load { my ($hd, $file, $b_force) = @_; open(my $F, $file) or die N("Error reading file %s", $file); my $h; { local $/ = "\0"; eval <$F>; } $@ and die N("Restoring from file %s failed: %s", $file, $@); ref($h) eq 'ARRAY' or die N("Bad backup file"); my %h; @h{@fields2save} = @$h; $h{totalsectors} == $hd->{totalsectors} or $b_force or cdie "bad totalsectors"; #- unsure we don't modify totalsectors local $hd->{totalsectors}; @$hd{@fields2save} = @$h; delete @$_{qw(isMounted isFormatted notFormatted toFormat toFormatUnsure)} foreach get_normal_parts($hd); will_tell_kernel($hd, 'force_reboot'); #- just like undo, do not force write_partitions so that user can see the new partition table but can still discard it } sub save { my ($hd, $file) = @_; my @h = @$hd{@fields2save}; require Data::Dumper; eval { output($file, Data::Dumper->Dump([\@h], ['$h']), "\0") } or die N("Error writing to file %s", $file); }