diff options
Diffstat (limited to 'perl-install/fsedit.pm')
| -rw-r--r-- | perl-install/fsedit.pm | 503 |
1 files changed, 121 insertions, 382 deletions
diff --git a/perl-install/fsedit.pm b/perl-install/fsedit.pm index edaadab88..fb2703e8f 100644 --- a/perl-install/fsedit.pm +++ b/perl-install/fsedit.pm @@ -3,52 +3,28 @@ package fsedit; use diagnostics; use strict; -#-###################################################################################### -#- misc imports -#-###################################################################################### -use common qw(:common :constant :functional :file); +use common qw(:common); use partition_table qw(:types); use partition_table_raw; -use detect_devices; -use Data::Dumper; -use fsedit; use devices; -use loopback; -use raid; -use fs; use log; -#-##################################################################################### -#- Globals -#-##################################################################################### +1; + my @suggestions = ( - { mntpoint => "/boot", size => 16 << 11, type => 0x83, ratio => 1, maxsize => 30 << 11 }, - { mntpoint => "/", size => 50 << 11, type => 0x83, ratio => 1, maxsize => 300 << 11 }, - { mntpoint => "swap", size => 30 << 11, type => 0x82, ratio => 1, maxsize => 250 << 11 }, - { mntpoint => "/usr", size => 200 << 11, type => 0x83, ratio => 6, maxsize =>3000 << 11 }, - { mntpoint => "/home", size => 50 << 11, type => 0x83, ratio => 3 }, - { mntpoint => "/var", size => 200 << 11, type => 0x83, ratio => 1, maxsize =>1000 << 11 }, - { mntpoint => "/tmp", size => 50 << 11, type => 0x83, ratio => 3, maxsize => 500 << 11 }, - { mntpoint => "/mnt/iso", size => 700 << 11, type => 0x83 }, + { mntpoint => "/boot", minsize => 10 << 11, size => 16 << 11, type => 0x83 }, + { mntpoint => "/", minsize => 50 << 11, size => 100 << 11, type => 0x83 }, + { mntpoint => "swap", minsize => 30 << 11, size => 60 << 11, type => 0x82 }, + { mntpoint => "/usr", minsize => 200 << 11, size => 500 << 11, type => 0x83 }, + { mntpoint => "/home", minsize => 50 << 11, size => 200 << 11, type => 0x83 }, + { mntpoint => "/var", minsize => 200 << 11, size => 250 << 11, type => 0x83 }, + { mntpoint => "/tmp", minsize => 50 << 11, size => 100 << 11, type => 0x83 }, + { mntpoint => "/mnt/iso", minsize => 700 << 11, size => 800 << 11, type => 0x83 }, ); -my @suggestions_mntpoints = ( "/root/", arch() =~ /sparc/ ? "/mnt/sunos" : "/mnt/windows" ); -my @partitions_signatures = ( - [ 0x83, 0x438, "\x53\xEF" ], - [ 0x183, 0x10034, "ReIsErFs" ], - [ 0x82, 4086, "SWAP-SPACE" ], - [ 0x7, 0x1FE, "\x55\xAA", 0x3, "NTFS" ], - [ 0xc, 0x1FE, "\x55\xAA", 0x52, "FAT32" ], -arch() !~ /^sparc/ ? ( - [ 0x6, 0x1FE, "\x55\xAA", 0x36, "FAT" ], -) : (), -); -sub typeOfPart($) { typeFromMagic(devices::make($_[0]), @partitions_signatures) } +1; -#-###################################################################################### -#- Functions -#-###################################################################################### sub hds($$) { my ($drives, $flags) = @_; my @hds; @@ -57,392 +33,155 @@ sub hds($$) { foreach (@$drives) { my $file = devices::make($_->{device}); - my $hd = partition_table_raw::get_geometry($file) or log::l("An error occurred while getting the geometry of block device $file: $!"), next; - $hd = { (%$_, %$hd) }; + my $hd = partition_table_raw::get_geometry($file) or die "An error occurred while getting the geometry of block device $file: $!"; $hd->{file} = $file; - $hd->{prefix} = $hd->{device}; - # for RAID arrays of format c0d0p1 + $hd->{prefix} = $hd->{device} = $_->{device}; + # for RAID arrays of format c0d0p1 $hd->{prefix} .= "p" if $hd->{prefix} =~ m,(rd|ida)/,; - eval { partition_table::read($hd, $flags->{clearall} || member($_->{device}, @{$flags->{clear} || []})) }; + eval { $rc = partition_table::read($hd, $flags->{clearall}) }; if ($@) { - cdie($@) unless $flags->{eraseBadPartitions}; - partition_table_raw::zero_MBR($hd); - } - member($_->{device}, @{$flags->{clear} || []}) and partition_table::remove($hd, $_) - foreach partition_table::get_normal_parts($hd); - - #- special case for type overloading (eg: reiserfs is 0x183) - foreach (grep { isExt2($_) } partition_table::get_normal_parts($hd)) { - my $type = typeOfPart($_->{device}); - $_->{type} = $type if $type > 0x100; + $@ =~ /bad magic number/ or die; + $flags->{forcezero} && !$::testing ? partition_table_raw::zero_MBR($hd) : die; } - push @hds, $hd; + $rc ? push @hds, $hd : log::l("An error occurred reading the partition table for the block device $_->{device}"); } [ @hds ]; } -sub readProcPartitions { - my ($hds) = @_; - my @parts; - foreach (cat_("/proc/partitions")) { - my (undef, undef, $size, $device) = split; - next if $size eq "1"; #- extended partitions - foreach (@$hds) { - push @parts, { start => 0, size => $size * 2, device => $device, - type => typeOfPart($device), rootDevice => $_->{device} - } if $device =~ /^$_->{device}./; - } - } - @parts; -} - -#- get all normal partition including special ones as found on sparc. sub get_fstab(@) { - loopback::loopbacks(@_), map { partition_table::get_normal_parts($_) } @_ -} - -#- get normal partition that should be visible for working on. -sub get_visible_fstab(@) { - grep { $_ && !partition_table::isWholedisk($_) && !partition_table::isHiddenMacPart($_) } map { partition_table::get_normal_parts($_) } @_; -} - -sub free_space(@) { - sum map { $_->{size} } map { partition_table::get_holes($_) } @_; -} - -sub hasRAID { - my $b = 0; - map { $b ||= isRAID($_) } get_fstab(@_); - $b; -} - -sub get_root($;$) { - my ($fstab, $boot) = @_; - if ($boot) { $_->{mntpoint} eq "/boot" and return $_ foreach @$fstab; } - $_->{mntpoint} eq "/" and return $_ foreach @$fstab; - undef; -} -sub get_root_ { get_root([ get_fstab(@{$_[0]}) ], $_[1]) } - -sub is_one_big_fat { - my ($hds) = @_; - @$hds == 1 or return; - - my @l = get_fstab(@$hds); - @l == 1 && isFat($l[0]) && free_space(@$hds) < 10 << 11; -} - - -sub computeSize($$$$) { - my ($part, $best, $hds, $suggestions) = @_; - my $max = $part->{maxsize} || $part->{size}; - return min($max, $best->{size}) unless $best->{ratio}; - - my $free_space = free_space(@$hds); - my @l = my @L = grep { - if (!has_mntpoint($_->{mntpoint}, $hds) && $free_space >= $_->{size}) { - $free_space -= $_->{size}; - 1; - } else { 0 } } @$suggestions; - - my $tot_ratios = 0; - while (1) { - my $old_free_space = $free_space; - my $old_tot_ratios = $tot_ratios; - - $tot_ratios = sum(map { $_->{ratio} } @l); - last if $tot_ratios == $old_tot_ratios; - - @l = grep { - if ($_->{ratio} && $_->{maxsize} && $tot_ratios && - $_->{size} + $_->{ratio} / $tot_ratios * $old_free_space >= $_->{maxsize}) { - return min($max, $best->{maxsize}) if $best->{mntpoint} eq $_->{mntpoint}; - $free_space -= $_->{maxsize} - $_->{size}; - 0; - } else { - $_->{ratio}; - } - } @l; - } - my $size = int min($max, $best->{size} + $free_space * ($tot_ratios && $best->{ratio} / $tot_ratios)); - #- verify other entry can fill the hole - if (grep { $_->{size} < $max - $size } @L) { $size } else { $max } + map { partition_table::get_normal_parts($_) } @_; } sub suggest_part($$$;$) { my ($hd, $part, $hds, $suggestions) = @_; $suggestions ||= \@suggestions; + foreach (@$suggestions) { $_->{minsize} ||= $_->{size} } + my $has_swap; + my @mntpoints = map { $has_swap ||= isSwap($_); $_->{mntpoint} } get_fstab(@$hds); + my %mntpoints; @mntpoints{@mntpoints} = undef; - my $has_swap = grep { isSwap($_) } get_fstab(@$hds); - - my ($best, $second) = - grep { !$_->{maxsize} || $part->{size} <= $_->{maxsize} } - grep { $_->{size} <= ($part->{maxsize} || $part->{size}) } - grep { !has_mntpoint($_->{mntpoint}, $hds) || isSwap($_) && !$has_swap } - grep { !$_->{hd} || $_->{hd} eq $hd->{device} } - grep { !$part->{type} || $part->{type} == $_->{type} || isTrueFS($part) && isTrueFS($_) } + my ($best, $second) = + grep { $part->{size} >= $_->{minsize} } + grep { !exists $mntpoints{$_->{mntpoint}} || isSwap($_) && !$has_swap } @$suggestions or return; -#- if (arch() =~ /^i386/) { -#- $best = $second if -#- $best->{mntpoint} eq '/boot' && -#- $part->{start} + $best->{size} > 1024 * $hd->cylinder_size(); #- if the empty slot is beyond the 1024th cylinder, no use having /boot -#- } + $best = $second if + $best->{mntpoint} eq '/boot' && + $part->{start} + $best->{minsize} > 1024 * partition_table::cylinder_size($hd); # if the empty slot is beyond the 1024th cylinder, no use having /boot - defined $best or return; #- sorry no suggestion :( + defined $best or return; # sorry no suggestion :( $part->{mntpoint} = $best->{mntpoint}; $part->{type} = $best->{type}; - $part->{size} = computeSize($part, $best, $hds, $suggestions); + $part->{size} = min($part->{size}, $best->{size}); 1; } -sub suggestions_mntpoint($) { - my ($hds) = @_; - sort grep { !/swap/ && !has_mntpoint($_, $hds) } - (@suggestions_mntpoints, map { $_->{mntpoint} } @suggestions); -} - -#-sub partitionDrives { -#- -#- my $cmd = "/sbin/fdisk"; -#- -x $cmd or $cmd = "/usr/bin/fdisk"; -#- -#- my $drives = findDrivesPresent() or die "You don't have any hard drives available! You probably forgot to configure a SCSI controller."; -#- -#- foreach (@$drives) { -#- my $text = "/dev/" . $_->{device}; -#- $text .= " - SCSI ID " . $_->{id} if $_->{device} =~ /^sd/; -#- $text .= " - Model " . $_->{info}; -#- $text .= " array" if $_->{device} =~ /^c.d/; -#- -#- #- truncate at 50 columns for now -#- $text = substr $text, 0, 50; -#- } -#- #-TODO TODO -#-} - - -sub has_mntpoint($$) { - my ($mntpoint, $hds) = @_; - scalar grep { - $mntpoint eq $_->{mntpoint} || - grep { $mntpoint eq $_->{mntpoint} } @{$_->{loopback} || []} - } get_fstab(@$hds); -} - -#- do this before modifying $part->{mntpoint} -#- $part->{mntpoint} should not be used here, use $mntpoint instead -sub check_mntpoint { - my ($mntpoint, $hd, $part, $hds, $loopbackDevice) = @_; - - ref $loopbackDevice or undef $loopbackDevice; - $mntpoint eq '' || isSwap($part) || isRAID($part) and return; - - local $_ = $mntpoint; - m|^/| or die _("Mount points must begin with a leading /"); -#- m|(.)/$| and die "The mount point $_ is illegal.\nMount points may not end with a /"; - - has_mntpoint($mntpoint, $hds) and die _("There is already a partition with mount point %s\n", $mntpoint); - - my $fake_part = { mntpoint => $mntpoint, device => $loopbackDevice }; - $fake_part->{loopback_file} = 1 if $loopbackDevice; - my $fstab = [ get_fstab(@$hds), $fake_part ]; - my $check; $check = sub { - my ($p, @seen) = @_; - push @seen, $p->{mntpoint} || return; - @seen > 1 && $p->{mntpoint} eq $mntpoint and die _("Circular mounts %s\n", join(", ", @seen)); - if (my $part = fs::up_mount_point($p->{mntpoint}, $fstab)) { - #- '/' carrier is a special case, it will be mounted first - $check->($part, @seen) unless loopback::carryRootLoopback($p); - } - if (isLoopback($p)) { - $check->($p->{device}, @seen); +#sub partitionDrives { +# +# my $cmd = "/sbin/fdisk"; +# -x $cmd or $cmd = "/usr/bin/fdisk"; +# +# my $drives = findDrivesPresent() or die "You don't have any hard drives available! You probably forgot to configure a SCSI controller."; +# +# foreach (@$drives) { +# my $text = "/dev/" . $_->{device}; +# $text .= " - SCSI ID " . $_->{id} if $_->{device} =~ /^sd/; +# $text .= " - Model " . $_->{info}; +# $text .= " array" if $_->{device} =~ /^c.d/; +# +# # truncate at 50 columns for now +# $text = substr $text, 0, 50; +# } +# #TODO TODO +#} + + + +sub checkMountPoint($$) { +# my $type = shift; +# local $_ = shift; +# +# m|^/| or die "The mount point $_ is illegal.\nMount points must begin with a leading /"; +# m|(.)/$| and die "The mount point $_ is illegal.\nMount points may not end with a /"; +# c::isprint($_) or die "The mount point $_ is illegal.\nMount points must be made of printable characters (no accents...)"; +# +# foreach my $dev (qw(/dev /bin /sbin /etc /lib)) { +# /^$dev/ and die "The $_ directory must be on the root filesystem.", +# } +# +# if ($type eq 'linux_native') { +# $_ eq '/'; and return 1; +# foreach my $r (qw(/var /tmp /boot /root)) { +# /^$r/ and return 1; +# } +# die "The mount point $_ is illegal.\nSystem partitions must be on Linux Native partitions"; +# } +# 1; +} + +sub removeFromList($$$) { + my ($start, $end, $list) = @_; + my $err = "error in removeFromList: removing an non-free block"; + + for (my $i = 0; $i < @$list; $i += 2) { + $start < $list->[$i] and die $err; + $start > $list->[$i + 1] and next; + + if ($start == $list->[$i]) { + $end > $list->[$i + 1] and die $err; + if ($end == $list->[$i + 1]) { + # the free block is just the same size, removing it + splice(@$list, 0, 2); + } else { + # the free block now start just after this block + $list->[$i] = $end; + } + } else { + $end <= $list->[$i + 1] or die $err; + if ($end < $list->[$i + 1]) { + splice(@$list, $i + 2, 0, $end, $list->[$i + 1]); + } + $list->[$i + 1] = $start; # shorten the free block } - }; - $check->($fake_part) unless $mntpoint eq '/' && $loopbackDevice; #- '/' is a special case, no loop check - - die "raid / with no /boot" if $mntpoint eq "/" && raid::is($part) && !has_mntpoint("/boot", $hds); - die _("You need a true filesystem (ext2, reiserfs) for this mount point\n") if !isTrueFS($part) && member($mntpoint, qw(/ /usr)); -#- if ($part->{start} + $part->{size} > 1024 * $hd->cylinder_size() && arch() =~ /i386/) { -#- die "/boot ending on cylinder > 1024" if $mntpoint eq "/boot"; -#- die "/ ending on cylinder > 1024" if $mntpoint eq "/" && !has_mntpoint("/boot", $hds); -#- } + return; + } } -sub add($$$;$) { - my ($hd, $part, $hds, $options) = @_; - - isSwap($part) ? - ($part->{mntpoint} = 'swap') : - $options->{force} || check_mntpoint($part->{mntpoint}, $hd, $part, $hds); - - delete $part->{maxsize}; - partition_table::add($hd, $part, $options->{primaryOrExtended}); -} sub allocatePartitions($$) { my ($hds, $to_add) = @_; + my %free_sectors = map { $_->{device} => [1, $_->{totalsectors} ] } @$hds; # first sector is always occupied by the MBR + my $remove = sub { removeFromList($_->{start}, $_->{start} + $_->{size}, $free_sectors{$_->{rootDevice}}) }; + my $success = 0; + + foreach (get_fstab(@$hds)) { &$remove(); } - foreach my $hd (@$hds) { - foreach (partition_table::get_holes($hd)) { - my ($start, $size) = @$_{"start", "size"}; - my $part; - while (suggest_part($hd, - $part = { start => $start, size => 0, maxsize => $size }, - $hds, $to_add)) { - add($hd, $part, $hds); - $size -= $part->{size} + $part->{start} - $start; - $start = $part->{start} + $part->{size}; + FSTAB: foreach (@$to_add) { + foreach my $hd (@$hds) { + my $v = $free_sectors{$hd->{device}}; + for (my $i = 0; $i < @$v; $i += 2) { + my $size = $v->[$i + 1] - $v->[$i]; + $_->{size} > $size and next; + $_->{start} = $v->[$i]; + $_->{rootDevice} = $hd->{device}; + partition_table::adjustStartAndEnd($hd, $_); + &$remove(); + partition_table::add($hd, $_); + $success++; + next FSTAB; } } + log::ld("can't allocate partition $_->{mntpoint} of size $_->{size}, not enough room"); } + $success; } sub auto_allocate($;$) { - my ($hds, $suggestions) = @_; + my ($hds, $suggestions) = @_; allocatePartitions($hds, $suggestions || \@suggestions); map { partition_table::assign_device_numbers($_) } @$hds; } - -sub undo_prepare($) { - my ($hds) = @_; - $Data::Dumper::Purity = 1; - foreach (@$hds) { - my @h = @{$_}{@partition_table::fields2save}; - push @{$_->{undo}}, Data::Dumper->Dump([\@h], ['$h']); - } -} -sub undo($) { - my ($hds) = @_; - foreach (@$hds) { - my $h; eval pop @{$_->{undo}} || next; - @{$_}{@partition_table::fields2save} = @$h; - - $_->{isDirty} = $_->{needKernelReread} = 1 if $_->{hasBeenDirty}; - } -} - -sub move { - my ($hd, $part, $hd2, $sector2) = @_; - - my $part1 = { %$part }; - my $part2 = { %$part }; - $part2->{start} = $sector2; - $part2->{size} += $hd2->cylinder_size() - 1; - partition_table::remove($hd, $part); - { - local ($part2->{notFormatted}, $part2->{isFormatted}); #- do not allow partition::add to change this - partition_table::add($hd2, $part2); - } - - return if $part2->{notFormatted} && !$part2->{isFormatted} || $::testing; - - local (*F, *G); - sysopen F, $hd->{file}, 0 or die ''; - sysopen G, $hd2->{file}, 2 or die _("Error opening %s for writing: %s", $hd2->{file}, "$!"); - - my $base = $part1->{start}; - my $base2 = $part2->{start}; - my $step = 10; - if ($hd eq $hd2) { - $base == $base2 and return; - $step = min($step, abs($base2 - $base)); - - if ($base < $base2) { - $base += $part1->{size} - $step; - $base2 += $part1->{size} - $step; - $step = -$step; - } - } - - my $f = sub { - $base < 0 and $base2 += -$base, $base = 0; - $base2 < 0 and $base += -$base2, $base2 = 0; - c::lseek_sector(fileno(F), $base, 0) or die "seeking to sector $base failed on drive $hd->{device}"; - c::lseek_sector(fileno(G), $base2, 0) or die "seeking to sector $base2 failed on drive $hd2->{device}"; - - my $buf; - sysread F, $buf, $SECTORSIZE * abs($_[0]) or die ''; - syswrite G, $buf; - }; - - for (my $i = 0; $i < $part1->{size} / abs($step); $i++, $base += $step, $base2 += $step) { - print "$base $base2\n"; - &$f($step); - } - if (my $v = ($part1->{size} % abs($step)) * sign($step)) { - $base += $v; - $base2 += $v; - &$f($v); - } -} - -sub change_type($$$) { - my ($hd, $part, $type) = @_; - $type != $part->{type} or return; - $hd->{isDirty} = 1; - $part->{mntpoint} = '' if isSwap($part) && $part->{mntpoint} eq "swap"; - $part->{type} = $type; - $part->{notFormatted} = 1; - $part->{isFormatted} = 0; -} - -sub rescuept($) { - my ($hd) = @_; - my ($ext, @hd); - - my $dev = devices::make($hd->{device}); - open F, "rescuept $dev|"; - foreach (<F>) { - my ($st, $si, $id) = /start=\s*(\d+),\s*size=\s*(\d+),\s*Id=\s*(\d+)/ or next; - my $part = { start => $st, size => $si, type => hex($id) }; - if (isExtended($part)) { - $ext = $part; - } else { - push @hd, $part; - } - } - close F or die "rescuept failed"; - - partition_table_raw::zero_MBR($hd); - foreach (@hd) { - my $b = partition_table::verifyInside($_, $ext); - if ($b) { - $_->{start}--; - $_->{size}++; - } - local $_->{notFormatted}; - - partition_table::add($hd, $_, ($b ? 'Extended' : 'Primary'), 1); - } -} - -sub verifyHds { - my ($hds, $readonly, $ok) = @_; - - if (is_empty_array_ref($hds)) { #- no way - die _("An error has occurred - no valid devices were found on which to create new filesystems. Please check your hardware for the cause of this problem"); - } - - my @parts = readProcPartitions($hds); - $ok &&= @parts == listlength(get_fstab(@$hds)) unless arch() eq "ppc"; - - if ($readonly && !$ok) { - log::l("using /proc/partitions as diskdrake failed :("); - foreach my $hd (@$hds) { - partition_table_raw::zero_MBR($hd); - $hd->{primary} = { normal => [ grep { $hd->{device} eq $_->{rootDevice} } @parts ] }; - } - } - $readonly && get_fstab(@$hds) == 0 and die _("You don't have any partitions!"); - $ok; -} - -#-###################################################################################### -#- Wonderful perl :( -#-###################################################################################### -1; # |