drakx - Mageia Installer and base platform for many utilities

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Diffstat (limited to 'kernel/list_modules.pm')

-rw-r--r--

1 files changed, 1 insertions, 1 deletions

package fsedit; # $Id$ use diagnostics; use strict; use vars qw(%suggestions); #-###################################################################################### #- misc imports #-###################################################################################### use common qw(:common :constant :functional :file); use partition_table qw(:types); use partition_table_raw; use detect_devices; use fsedit; use devices; use loopback; use log; use fs; %suggestions = ( __("simple") => [ { mntpoint => "/", size => 300 << 11, type => 0x83, ratio => 5, maxsize =>3500 << 11 }, { mntpoint => "swap", size => 64 << 11, type => 0x82, ratio => 1, maxsize => 250 << 11 }, { mntpoint => "/home", size => 300 << 11, type => 0x83, ratio => 3 }, ], 'with usr' => [ { mntpoint => "/", size => 150 << 11, type => 0x83, ratio => 1, maxsize => 500 << 11 }, { mntpoint => "swap", size => 64 << 11, type => 0x82, ratio => 1, maxsize => 250 << 11 }, { mntpoint => "/usr", size => 300 << 11, type => 0x83, ratio => 4, maxsize =>3000 << 11 }, { mntpoint => "/home", size => 100 << 11, type => 0x83, ratio => 5 }, ], __("server") => [ { mntpoint => "/", size => 150 << 11, type => 0x83, ratio => 1, maxsize => 250 << 11 }, { mntpoint => "swap", size => 64 << 11, type => 0x82, ratio => 2, maxsize => 400 << 11 }, { mntpoint => "/usr", size => 300 << 11, type => 0x83, ratio => 3, maxsize =>3000 << 11 }, { mntpoint => "/var", size => 100 << 11, type => 0x83, ratio => 4 }, { mntpoint => "/home", size => 100 << 11, type => 0x83, ratio => 5 }, ], ); my @suggestions_mntpoints = ( "/root", "/var/ftp", "/var/www", 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($_[0]), @partitions_signatures) } #-###################################################################################### #- Functions #-###################################################################################### sub hds { my ($drives, $flags) = @_; my @hds; my $rc; foreach (@$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) }; $hd->{file} = $file; $hd->{prefix} = $hd->{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}, @{$flags->{clear} || []})) }; if ($@) { 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; } push @hds, $hd; } [ @hds ]; } sub readProcPartitions { my ($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 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 { $max } } sub suggest_part { my ($part, $hds, $suggestions) = @_; $suggestions ||= $suggestions{server}; 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 $part->{rootDevice} } grep { !$part->{type} || $part->{type} == $_->{type} || isTrueFS($part) && isTrueFS($_) } @$suggestions or return; #- if (arch() =~ /i.86/) { #- $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 #- } defined $best or return; #- sorry no suggestion :( $part->{mntpoint} = $best->{mntpoint}; $part->{type} = $best->{type}; $part->{size} = computeSize($part, $best, $hds, $suggestions); 1; } sub suggestions_mntpoint { my ($hds) = @_; sort grep { !/swap/ && !has_mntpoint($_, $hds) } (@suggestions_mntpoints, map { $_->{mntpoint} } @{$suggestions{server}}); } #-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 $text, 0, 50; #- } #- #-TODO TODO #-} sub mntpoint2part { my ($mntpoint, $fstab) = @_; first(grep { $mntpoint eq $_->{mntpoint} } @$fstab); } sub has_mntpoint { my ($mntpoint, $hds) = @_; mntpoint2part($mntpoint, [ get_fstab(@$hds) ]); } sub get_root_ { my ($fstab, $boot) = @_; $boot && mntpoint2part("/boot", $fstab) || mntpoint2part("/", $fstab); } sub get_root { &get_root_ || {} } #- 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); } }; $check->($fake_part) unless $mntpoint eq '/' && $loopbackDevice; #- '/' is a special case, no loop check die "raid / with no /boot" if $mntpoint eq "/" && isMDRAID($part) && !has_mntpoint("/boot", $hds); die _("This directory should remain within the root filesystem") if member($mntpoint, qw(/bin /dev /etc /lib /sbin)); die _("You need a true filesystem (ext2, reiserfs) for this mount point\n") if !isTrueFS($part) && member($mntpoint, qw(/ /home /tmp /usr /var)); #- if ($part->{start} + $part->{size} > 1024 * $hd->cylinder_size() && arch() =~ /i.86/) { #- die "/boot ending on cylinder > 1024" if $mntpoint eq "/boot"; #- die "/ ending on cylinder > 1024" if $mntpoint eq "/" && !has_mntpoint("/boot", $hds); #- } } 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) = @_; foreach my $hd (@$hds) { foreach (partition_table::get_holes($hd)) { my ($start, $size) = @$_{"start", "size"}; my $part; while (suggest_part($part = { start => $start, size => 0, maxsize => $size, rootDevice => $hd->{device} }, $hds, $to_add)) { add($hd, $part, $hds); $size -= $part->{size} + $part->{start} - $start; $start = $part->{start} + $part->{size}; } } } } sub auto_allocate { my ($hds, $suggestions) = @_; allocatePartitions($hds, $suggestions || $suggestions{simple}); map { partition_table::assign_device_numbers($_) } @$hds; } sub undo_prepare($) { my ($hds) = @_; require Data::Dumper; $Data::Dumper::Purity = 1; foreach (@$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}); local *F; open F, "rescuept $dev|"; local $_; while (<F>) { my ($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 ] }; } $ok = 1; } $readonly && get_fstab(@$hds) == 0 and die _("You don't have any partitions!"); $ok; } #-###################################################################################### #- Wonderful perl :( #-###################################################################################### 1; #


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