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package fsedit; # $Id$
use diagnostics;
use strict;
use vars qw(%suggestions);
#-######################################################################################
#- misc imports
#-######################################################################################
use common;
use partition_table;
use partition_table::raw;
use fs::get;
use fs::type;
use fs::loopback;
use fs::proc_partitions;
use detect_devices;
use devices;
use log;
use fs;
%suggestions = (
N_("simple") => [
{ mntpoint => "/", size => MB(300), fs_type => 'ext3', ratio => 20, maxsize => MB(8000) },
{ mntpoint => "swap", size => MB(128), fs_type => 'swap', ratio => 1, maxsize => MB(4000) },
{ mntpoint => "/home", size => MB(300), fs_type => 'ext3', ratio => 3, min_hd_size => MB(7000) },
], N_("with /usr") => [
{ mntpoint => "/", size => MB(250), fs_type => 'ext3', ratio => 1, maxsize => MB(8000) },
{ mntpoint => "swap", size => MB(64), fs_type => 'swap', ratio => 1, maxsize => MB(4000) },
{ mntpoint => "/usr", size => MB(300), fs_type => 'ext3', ratio => 4, maxsize => MB(8000) },
{ mntpoint => "/home", size => MB(100), fs_type => 'ext3', ratio => 3, min_hd_size => MB(7000) },
], N_("server") => [
{ mntpoint => "/", size => MB(150), fs_type => 'ext3', ratio => 1, maxsize => MB(8000) },
{ mntpoint => "swap", size => MB(64), fs_type => 'swap', ratio => 2, maxsize => MB(4000) },
{ mntpoint => "/usr", size => MB(300), fs_type => 'ext3', ratio => 4, maxsize => MB(8000) },
{ mntpoint => "/var", size => MB(200), fs_type => 'ext3', ratio => 3 },
{ mntpoint => "/home", size => MB(150), fs_type => 'ext3', ratio => 3, min_hd_size => MB(7000) },
{ mntpoint => "/tmp", size => MB(150), fs_type => 'ext3', ratio => 2, maxsize => MB(4000) },
],
);
foreach (values %suggestions) {
if (arch() =~ /ia64/) {
@$_ = ({ mntpoint => "/boot/efi", size => MB(50), pt_type => 0xef, ratio => 1, maxsize => MB(150) }, @$_);
}
}
my @suggestions_mntpoints = (
"/var/ftp", "/var/www", "/boot", '/usr/local', '/opt',
arch() =~ /sparc/ ? "/mnt/sunos" : arch() =~ /ppc/ ? "/mnt/macos" : "/mnt/windows",
);
#-######################################################################################
#- Functions
#-######################################################################################
sub recompute_loopbacks {
my ($all_hds) = @_;
my @fstab = fs::get::fstab($all_hds);
@{$all_hds->{loopbacks}} = map { isPartOfLoopback($_) ? @{$_->{loopback}} : () } @fstab;
}
sub raids {
my ($hds) = @_;
my @parts = fs::get::hds_fstab(@$hds);
my @l = grep { isRawRAID($_) } @parts or return [];
log::l("looking for raids in " . join(' ', map { $_->{device} } @l));
require raid;
raid::detect_during_install(@l) if $::isInstall;
raid::get_existing(@l);
}
sub dmcrypts {
my ($all_hds) = @_;
my @parts = fs::get::fstab($all_hds);
my @l = grep { fs::type::isRawLUKS($_) } @parts or return;
log::l("using dm-crypt from " . join(' ', map { $_->{device} } @l));
require fs::dmcrypt;
fs::dmcrypt::read_crypttab($all_hds);
fs::dmcrypt::get_existing(@l);
}
sub lvms {
my ($all_hds) = @_;
my @pvs = grep { isRawLVM($_) } fs::get::fstab($all_hds) or return;
scan_pvs(@pvs);
}
sub scan_pvs {
my (@pvs) = @_;
log::l("looking for vgs in " . join(' ', map { $_->{device} } @pvs));
#- otherwise vgscan will not find them
devices::make($_->{device}) foreach @pvs;
require lvm;
my @lvms;
foreach (@pvs) {
my $name = lvm::pv_to_vg($_) or next;
my $lvm = find { $_->{VG_name} eq $name } @lvms;
if (!$lvm) {
$lvm = new lvm($name);
lvm::update_size($lvm);
lvm::get_lvs($lvm);
push @lvms, $lvm;
}
$_->{lvm} = $name;
push @{$lvm->{disks}}, $_;
}
@lvms;
}
sub handle_dmraid {
my ($drives, $o_in) = @_;
@$drives > 1 or return;
devices::make($_->{device}) foreach @$drives;
require fs::dmraid;
eval { fs::dmraid::init() } or log::l("dmraid::init failed"), return;
my @vgs = fs::dmraid::vgs();
log::l(sprintf('dmraid: ' . join(' ', map { "$_->{device} [" . join(' ', @{$_->{disks}}) . "]" } @vgs)));
if ($o_in && @vgs && $::isInstall) {
@vgs = grep {
$o_in->ask_yesorno('', N("BIOS software RAID detected on disks %s. Activate it?", join(' ', @{$_->{disks}})), 1);
} @vgs or do {
fs::dmraid::call_dmraid('-an');
return;
};
}
if (!$::isInstall) {
fs::dmraid::migrate_device_names($_) foreach @vgs;
}
log::l("using dmraid on " . join(' ', map { $_->{device} } @vgs));
my @used_hds = map {
my $part = fs::get::device2part($_, $drives) or log::l("handle_dmraid: can't find $_ in known drives");
if_($part, $part);
} map { @{$_->{disks}} } @vgs;
@$drives = difference2($drives, \@used_hds);
push @$drives, @vgs;
}
sub get_hds {
my ($o_flags, $o_in) = @_;
my $flags = $o_flags || {};
$flags->{readonly} && ($flags->{clearall} || $flags->{clear}) and die "conflicting flags readonly and clear/clearall";
my @drives = detect_devices::hds();
#- replace drives used in dmraid by the merged name
handle_dmraid(\@drives, $o_in) if !$flags->{nodmraid};
foreach my $hd (@drives) {
$hd->{file} = devices::make($hd->{device});
}
@drives = partition_table::raw::get_geometries(@drives);
my (@hds, @raw_hds);
foreach my $hd (@drives) {
$hd->{readonly} = $flags->{readonly};
eval { partition_table::raw::test_for_bad_drives($hd) if !$flags->{no_bad_drives} };
if (my $err = $@) {
log::l("test_for_bad_drives returned $err");
if ($err =~ /write error:/) {
log::l("setting $hd->{device} readonly");
$hd->{readonly} = 1;
} elsif ($err =~ /read error:/) {
next;
} else {
$o_in and $o_in->ask_warn('', $err);
next;
}
}
if ($flags->{clearall} || member($hd->{device}, @{$flags->{clear} || []})) {
my $lvms = []; #- temporary one, will be re-created later in get_hds()
partition_table_initialize($lvms, $hd, $o_in);
} else {
my $handle_die_and_cdie = sub {
if (my $type = fs::type::type_subpart_from_magic($hd)) {
#- non partitioned drive?
if (exists $hd->{usb_description} && $type->{fs_type}) {
#- USB keys
put_in_hash($hd, $type);
push @raw_hds, $hd;
$hd = '';
1;
} else {
0;
}
} elsif ($hd->{readonly}) {
log::l("using /proc/partitions since diskdrake failed :(");
fs::proc_partitions::use_($hd);
1;
} else {
0;
}
};
my $handled;
eval {
catch_cdie {
partition_table::read($hd);
if (listlength(partition_table::get_normal_parts($hd)) == 0) {
$handled = 1 if $handle_die_and_cdie->();
} elsif ($::isInstall) {
if (fs::type::is_dmraid($hd)) {
if (my $p = find { ! -e "/dev/$_->{device}" } partition_table::get_normal_parts($hd)) {
#- dmraid should have created the device, so it means we don't agree
die sprintf(q(bad dmraid (missing partition %s), you may try rebooting install with option "nodmraid"), $p->{device});
}
} else {
fs::proc_partitions::compare($hd) if !detect_devices::is_xbox() && arch() ne 'ppc';
}
}
} sub {
my $err = $@;
if ($handle_die_and_cdie->()) {
$handled = 1;
0; #- do not continue, transform cdie into die
} else {
!$o_in || $o_in->ask_okcancel('', formatError($err));
}
};
};
if (my $err = $@) {
if ($handled) {
#- already handled in cdie handler above
} elsif ($handle_die_and_cdie->()) {
} elsif ($o_in && $o_in->ask_yesorno(N("Error"),
N("I can not read the partition table of device %s, it's too corrupted for me :(
I can try to go on, erasing over bad partitions (ALL DATA will be lost!).
The other solution is to not allow DrakX to modify the partition table.
(the error is %s)
Do you agree to lose all the partitions?
", $hd->{device}, formatError($err)))) {
partition_table::raw::zero_MBR($hd);
} else {
#- using it readonly
log::l("using /proc/partitions since diskdrake failed :(");
fs::proc_partitions::use_($hd);
}
}
$hd or next;
member($_->{device}, @{$flags->{clear} || []}) and partition_table::remove($hd, $_)
foreach partition_table::get_normal_parts($hd);
}
my @parts = partition_table::get_normal_parts($hd);
# checking the magic of the filesystem, do not rely on pt_type
foreach (@parts) {
if (my $type = fs::type::type_subpart_from_magic($_)) {
$type->{pt_type} = $_->{pt_type}; #- keep {pt_type}
put_in_hash($_, $type);
} else {
$_->{bad_fs_type_magic} = 1;
}
}
if ($hd->{usb_media_type}) {
$hd->{is_removable} = 1;
$_->{is_removable} = 1 foreach @parts;
}
push @hds, $hd;
}
#- detect raids before LVM allowing LVM on raid
my $raids = raids(\@hds);
my $all_hds = { %{ fs::get::empty_all_hds() }, hds => \@hds, raw_hds => \@raw_hds, lvms => [], raids => $raids };
$all_hds->{lvms} = [ lvms($all_hds) ];
fs::get_major_minor([ fs::get::fstab($all_hds) ]);
# must be done after getting major/minor
$all_hds->{dmcrypts} = [ dmcrypts($all_hds) ];
$_->{faked_device} = 0 foreach fs::get::fstab($all_hds);
$all_hds;
}
#- are_same_partitions() do not look at the device name since things may have changed
sub are_same_partitions {
my ($part1, $part2) = @_;
foreach ('start', 'size', 'pt_type', 'fs_type', 'rootDevice') {
$part1->{$_} eq $part2->{$_} or return 0;
}
1;
}
sub is_one_big_fat_or_NT {
my ($hds) = @_;
@$hds == 1 or return 0;
my @l = fs::get::hds_fstab(@$hds);
@l == 1 && isFat_or_NTFS($l[0]) && fs::get::hds_free_space(@$hds) < MB(10);
}
sub computeSize {
my ($part, $best, $all_hds, $suggestions) = @_;
my $max = $part->{maxsize} || $part->{size};
return min($max, $best->{size}) unless $best->{ratio};
my %free_space;
$free_space{$_->{rootDevice}} += $_->{size} foreach fs::get::holes($all_hds);
my @l = my @L = grep {
my @possible = $_->{hd} ? $_->{hd} : keys %free_space;
my $size = $_->{size};
if (my $dev = find { $free_space{$_} >= $size } @possible) {
$free_space{$dev} -= $size;
1;
} else { 0 } } @$suggestions;
my $free_space = $best->{hd} && $free_space{$best->{hd}} || sum(values %free_space);
my $cylinder_size_maxsize_adjusted;
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} - $_->{size};
if (!$cylinder_size_maxsize_adjusted++) {
eval { $free_space += fs::get::part2hd($part, $all_hds)->cylinder_size - 1 };
}
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
(any { $_->{size} <= $max - $size } @L) ? $size : $max;
}
sub suggest_part {
my ($part, $all_hds, $o_suggestions) = @_;
my $suggestions = $o_suggestions || $suggestions{server} || $suggestions{simple};
#- suggestions now use {fs_type}, but still keep compatibility
foreach (@$suggestions) {
fs::type::set_pt_type($_, $_->{pt_type}) if !exists $_->{fs_type};
}
my $hd = fs::get::part2hd($part, $all_hds);
my $hd_size = $hd && $hd->{totalsectors}; # nb: no $hd if $part is /dev/mdX
my $has_swap = any { isSwap($_) } fs::get::fstab($all_hds);
my @local_suggestions =
grep { !$_->{mntpoint} && !$_->{VG_name} || !fs::get::has_mntpoint($_->{mntpoint}, $all_hds) || isSwap($_) && !$has_swap }
grep { !$_->{min_hd_size} || !$hd_size || $_->{min_hd_size} <= $hd_size }
grep { !$_->{hd} || $_->{hd} eq $part->{rootDevice} }
@$suggestions;
#- this allows specifying the size using a relative size.
#- one should rather use {ratio} instead
foreach (@local_suggestions) {
if ($_->{percent_size} && $_->{percent_size} =~ /(.+?)%?$/) {
$_->{size} = $1 / 100 * $hd_size;
log::l("in suggestion, setting size=$_->{size} for percent_size=$_->{percent_size}");
}
}
my ($best) =
grep { !$_->{maxsize} || $part->{size} <= $_->{maxsize} }
grep { $_->{size} <= ($part->{maxsize} || $part->{size}) }
grep { !$part->{fs_type} || $part->{fs_type} eq $_->{fs_type} || isTrueFS($part) && isTrueFS($_) }
@local_suggestions;
defined $best or return 0; #- sorry no suggestion :(
$part->{mntpoint} = $best->{mntpoint};
fs::type::set_type_subpart($part, $best) if !isTrueFS($best) || !isTrueFS($part);
$part->{size} = computeSize($part, $best, $all_hds, \@local_suggestions);
foreach ('options', 'lv_name', 'encrypt_key', 'primaryOrExtended',
'device_LABEL', 'prefer_device_LABEL', 'device_UUID', 'prefer_device_UUID', 'prefer_device') {
$part->{$_} = $best->{$_} if $best->{$_};
}
$best;
}
sub suggestions_mntpoint {
my ($all_hds) = @_;
sort grep { !/swap/ && !fs::get::has_mntpoint($_, $all_hds) }
(@suggestions_mntpoints, map { $_->{mntpoint} } @{$suggestions{server} || $suggestions{simple}});
}
#- you can do this before modifying $part->{mntpoint}
#- so $part->{mntpoint} should not be used here, use $mntpoint instead
sub check_mntpoint {
my ($mntpoint, $part, $all_hds) = @_;
$mntpoint eq '' || isSwap($part) || isNonMountable($part) and return 0;
$mntpoint =~ m|^/| or die N("Mount points must begin with a leading /");
$mntpoint =~ m|[\x7f-\xff]| and cdie N("Mount points should contain only alphanumerical characters");
fs::get::mntpoint2part($mntpoint, [ grep { $_ ne $part } fs::get::really_all_fstab($all_hds) ]) and die N("There is already a partition with mount point %s\n", $mntpoint);
if ($mntpoint eq "/" && isRAID($part) && !fs::get::has_mntpoint("/boot", $all_hds)) {
my $md_part = fs::get::device2part($part->{raid}, $all_hds->{raids});
cdie N("You've selected a software RAID partition as root (/).
No bootloader is able to handle this without a /boot partition.
Please be sure to add a /boot partition") if $md_part->{level} ne '1'; # lilo handles / on RAID1
}
#- NB: if the LV doesn't exist, lv_nb_pvs returns 0
die N("You can not use the LVM Logical Volume for mount point %s since it spans physical volumes", $mntpoint)
if $mntpoint eq '/boot' && isLVM($part) && lvm::lv_nb_pvs($part) > 1;
cdie N("You've selected the LVM Logical Volume as root (/).
The bootloader is not able to handle this when the volume spans physical volumes.
You should create a /boot partition first") if $mntpoint eq "/" && isLVM($part) && lvm::lv_nb_pvs($part) != 1 && !fs::get::has_mntpoint("/boot", $all_hds);
cdie N("This directory should remain within the root filesystem")
if member($mntpoint, qw(/root));
die N("This directory should remain within the root filesystem")
if member($mntpoint, qw(/bin /dev /etc /lib /sbin /mnt /media));
die N("You need a true filesystem (ext2/ext3, reiserfs, xfs, or jfs) for this mount point\n")
if !isTrueLocalFS($part) && $mntpoint eq '/';
die N("You need a true filesystem (ext2/ext3, reiserfs, xfs, or jfs) for this mount point\n")
if !isTrueFS($part) && member($mntpoint, '/home', fs::type::directories_needed_to_boot());
die N("You can not use an encrypted file system for mount point %s", $mntpoint)
if $part->{options} =~ /encrypted/ && member($mntpoint, qw(/ /usr /var /boot));
local $part->{mntpoint} = $mntpoint;
fs::loopback::check_circular_mounts($part, $all_hds);
}
sub add {
my ($hd, $part, $all_hds, $options) = @_;
isSwap($part) ?
($part->{mntpoint} = 'swap') :
$options->{force} || check_mntpoint($part->{mntpoint}, $part, $all_hds);
delete $part->{maxsize};
if (isLVM($hd)) {
lvm::lv_create($hd, $part);
} else {
partition_table::add($hd, $part, $options->{primaryOrExtended});
}
fs::get_major_minor([ $part ]);
}
sub allocatePartitions {
my ($all_hds, $to_add) = @_;
my @to_add = @$to_add;
foreach my $part_ (fs::get::holes($all_hds, 'non_readonly')) {
my ($start, $size, $dev) = @$part_{"start", "size", "rootDevice"};
my ($part, $suggested);
while ($suggested = suggest_part($part = { start => $start, size => 0, maxsize => $size, rootDevice => $dev },
$all_hds, \@to_add)) {
my $hd = fs::get::part2hd($part, $all_hds);
add($hd, $part, $all_hds, { primaryOrExtended => $part->{primaryOrExtended} });
$size -= $part->{size} + $part->{start} - $start;
$start = $part->{start} + $part->{size};
@to_add = grep { $_ != $suggested } @to_add;
}
}
}
sub auto_allocate {
my ($all_hds, $o_suggestions) = @_;
my $before = listlength(fs::get::fstab($all_hds));
my $suggestions = $o_suggestions || $suggestions{simple};
allocatePartitions($all_hds, $suggestions);
if ($o_suggestions) {
auto_allocate_raids($all_hds, $suggestions);
if (auto_allocate_vgs($all_hds, $suggestions)) {
#- allocatePartitions needs to be called twice, once for allocating PVs, once for allocating LVs
my @vgs = map { $_->{VG_name} } @{$all_hds->{lvms}};
my @suggested_lvs = grep { member($_->{hd}, @vgs) } @$suggestions;
allocatePartitions($all_hds, \@suggested_lvs);
}
}
partition_table::assign_device_numbers($_) foreach @{$all_hds->{hds}};
if ($before == listlength(fs::get::fstab($all_hds))) {
# find out why auto_allocate failed
if (any { !fs::get::has_mntpoint($_->{mntpoint}, $all_hds) } @$suggestions) {
die N("Not enough free space for auto-allocating");
} else {
die N("Nothing to do");
}
}
}
sub auto_allocate_raids {
my ($all_hds, $suggestions) = @_;
my @raids = grep { isRawRAID($_) } fs::get::fstab($all_hds) or return;
require raid;
my @mds = grep { $_->{hd} =~ /md/ } @$suggestions;
foreach my $md (@mds) {
my @raids_ = grep { !$md->{parts} || $md->{parts} =~ /\Q$_->{mntpoint}/ } @raids;
@raids = difference2(\@raids, \@raids_);
my %h = %$md;
delete @h{'hd', 'parts'}; # keeping mntpoint, level, chunk-size, fs_type/pt_type
$h{disks} = \@raids_;
my $part = raid::new($all_hds->{raids}, %h);
raid::updateSize($part);
push @raids, $part; #- we can build raid over raid
}
}
sub auto_allocate_vgs {
my ($all_hds, $suggestions) = @_;
my @pvs = grep { isRawLVM($_) } fs::get::fstab($all_hds) or return 0;
my @vgs = grep { $_->{VG_name} } @$suggestions or return 0;
partition_table::write($_) foreach @{$all_hds->{hds}};
require lvm;
foreach my $vg (@vgs) {
my $lvm = new lvm($vg->{VG_name});
push @{$all_hds->{lvms}}, $lvm;
my @pvs_ = grep { !$vg->{parts} || $vg->{parts} =~ /\Q$_->{mntpoint}/ } @pvs;
@pvs = difference2(\@pvs, \@pvs_);
foreach my $part (@pvs_) {
