drakx - Mageia Installer and base platform for many utilities

index : drakx

Mageia Installer and base platform for many utilities

Thierry Vignaud [tv]

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move/tools/busy-files

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package fsedit; # $Id$

use diagnostics;
use strict;
use vars qw(%suggestions);

#-######################################################################################
#- misc imports
#-######################################################################################
use common;
use partition_table qw(:types);
use partition_table::raw;
use detect_devices;
use fsedit;
use devices;
use loopback;
use log;
use fs;

%suggestions = (
  N_("simple") => [
    { mntpoint => "/",     size => 300 << 11, type =>0x483, ratio => 5, maxsize => 6000 << 11 },
    { mntpoint => "swap",  size =>  64 << 11, type => 0x82, ratio => 1, maxsize =>  500 << 11 },
    { mntpoint => "/home", size => 300 << 11, type =>0x483, ratio => 3 },
  ], N_("with /usr") => [
    { mntpoint => "/",     size => 250 << 11, type =>0x483, ratio => 1, maxsize => 2000 << 11 },
    { mntpoint => "swap",  size =>  64 << 11, type => 0x82, ratio => 1, maxsize =>  500 << 11 },
    { mntpoint => "/usr",  size => 300 << 11, type =>0x483, ratio => 4, maxsize => 4000 << 11 },
    { mntpoint => "/home", size => 100 << 11, type =>0x483, ratio => 3 },
  ], N_("server") => [
    { mntpoint => "/",     size => 150 << 11, type =>0x483, ratio => 1, maxsize =>  800 << 11 },
    { mntpoint => "swap",  size =>  64 << 11, type => 0x82, ratio => 2, maxsize =>  800 << 11 },
    { mntpoint => "/usr",  size => 300 << 11, type =>0x483, ratio => 4, maxsize => 4000 << 11 },
    { mntpoint => "/var",  size => 200 << 11, type =>0x483, ratio => 3 },
    { mntpoint => "/home", size => 150 << 11, type =>0x483, ratio => 3 },
    { mntpoint => "/tmp",  size => 150 << 11, type =>0x483, ratio => 2, maxsize => 1000 << 11 },
  ],
);
foreach (values %suggestions) {
    if (arch() =~ /ia64/) {
	@$_ = ({ mntpoint => "/boot/efi", size => 50 << 11, type => 0xb, ratio => 1, maxsize => 150 << 11 }, @$_);
    }
}

my @suggestions_mntpoints = (
    "/var/ftp", "/var/www", "/boot",
    arch() =~ /sparc/ ? "/mnt/sunos" : arch() =~ /ppc/ ? "/mnt/macos" : "/mnt/windows",
    #- RedHat also has /usr/local and /opt
);

my @partitions_signatures = (
    [ 0x8e, 0, "HM\1\0" ],
    [ 0x83, 0x438, "\x53\xEF" ],
    [ 0x183, 0x10034, "ReIsErFs" ],
    [ 0x183, 0x10034, "ReIsEr2Fs" ],
    [ 0x283, 0, 'XFSB', 0x200, 'XAGF', 0x400, 'XAGI' ],
    [ 0x383, 0x8000, 'JFS1' ],
    [ 0x82, 4086, "SWAP-SPACE" ],
    [ 0x82, 4086, "SWAPSPACE2" ],
    [ 0x107, 0x1FE, "\x55\xAA", 0x3, "NTFS" ],
    [ 0xc,  0x1FE, "\x55\xAA", 0x52, "FAT32" ],
if_(arch() !~ /^sparc/,
    [ 0x6,  0x1FE, "\x55\xAA", 0x36, "FAT" ],
),
);

sub typeOfPart { 
    my $dev = devices::make($_[0]);
    my $t = typeFromMagic($dev, @partitions_signatures);
    if ($t == 0x83) {
	#- there is no magic to differentiate ext3 and ext2. Using libext2fs
	#- to check if it has a journal
	$t = 0x483 if c::is_ext3($dev);
    }
    $t;
}

#-######################################################################################
#- Functions
#-######################################################################################
sub empty_all_hds {
    { hds => [], lvms => [], raids => [], loopbacks => [], raw_hds => [], nfss => [], smbs => [], davs => [], special => [] };
}
sub recompute_loopbacks {
    my ($all_hds) = @_;
    my @fstab = get_all_fstab($all_hds);
    @{$all_hds->{loopbacks}} = map { isPartOfLoopback($_) ? @{$_->{loopback}} : () } @fstab;
}

sub raids {
    my ($hds) = @_;

    my @parts = get_fstab(@$hds);
    {
	my @l = grep { isRawRAID($_) } @parts or return [];
	detect_devices::raidAutoStart(@l);
    }

    fs::get_major_minor(@parts);
    my %devname2part = map { $_->{dev} => { %$_, device => $_->{dev} } } read_proc_partitions_raw();

    my @raids;
    my @mdstat = cat_("/proc/mdstat");
    for (my $i = 0; $i < @mdstat; $i++) {

	my ($nb, $level, $mdparts) = 
	  #- line format is:
	  #- md%d : {in}?active{ (read-only)}? {linear|raid1|raid4|raid5}{ DEVNAME[%d]{(F)}?}*
	  $mdstat[$i] =~ /^md(\d+).* ([^ \[\]]+) (\S+\[\d+\].*)/ or next;

	$level =~ s/raid//; #- { linear | raid0 | raid1 | raid5 } -> { linear | 0 | 1 | 5 }

	my $chunks = $mdstat[$i+1] =~ /(\S+) chunks/ ? $1 : "64k";

	my @raw_mdparts = map { /([^\[]+)/ } split ' ', $mdparts;
	my @mdparts = 
	  map { 
	      my $mdpart = $devname2part{$_} || { device => $_ };
	      if (my $part = find { is_same_hd($mdpart, $_) } @parts) {
		  $part->{raid} = $nb;
		  delete $part->{mntpoint};
		  $part;
	      } else {
		  #- forget it when not found? that way it won't break much... beurk.
		  ();
	      }
	  } @raw_mdparts;

	my $type = typeOfPart("md$nb");
	log::l("RAID: found md$nb (raid $level) chunks $chunks ", if_($type, "type $type "), "with parts ", join(", ", @raw_mdparts));
	$raids[$nb] = { 'chunk-size' => $chunks, type => $type || 0x83, disks => \@mdparts,
			device => "md$nb", notFormatted => !$type, level => $level };
    }
    require raid;
    raid::update(@raids);
    \@raids;
}

sub lvms {
    my ($all_hds) = @_;
    my @pvs = grep { isRawLVM($_) } get_all_fstab($all_hds) or return;

    #- otherwise vgscan won't find them
    devices::make($_->{device}) foreach @pvs; 
    require lvm;

    my @lvms;
    foreach (@pvs) {
	my $name = lvm::get_vg($_) 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 hds {
    my ($flags, $ask_before_blanking) = @_;
    $flags ||= {};
    $flags->{readonly} && ($flags->{clearall} || $flags->{clear}) and die "conflicting flags readonly and clear/clearall";

    my @drives = detect_devices::hds();

    my (@hds);
    foreach my $hd (@drives) {
	$hd->{file} = devices::make($hd->{device});
	$hd->{prefix} ||= $hd->{device};
	$hd->{readonly} = $flags->{readonly};

	my $h = partition_table::raw::get_geometry($hd->{file}) or log::l("An error occurred while getting the geometry of block device $hd->{file}: $!"), next;
	add2hash_($hd, $h);

	eval { partition_table::raw::test_for_bad_drives($hd) if $::isInstall };
	if (my $err = $@) {
	    if ($err =~ /write error:/) { 
		$hd->{readonly} = 1;
	    } else {
		cdie $err if $err !~ /read error:/;
		next;
	    }
	}

	if ($flags->{clearall} || member($hd->{device}, @{$flags->{clear} || []})) {
	    partition_table::raw::zero_MBR_and_dirty($hd);
	} else {
	    eval { 
		partition_table::read($hd); 
		compare_with_proc_partitions($hd) if $::isInstall;
	    };
	    if (my $err = $@) {
		if ($hd->{readonly}) {
		    use_proc_partitions($hd);
		} elsif ($ask_before_blanking && $ask_before_blanking->($hd->{device}, $err)) {
		    partition_table::raw::zero_MBR($hd);
		} else {
		    #- using it readonly
		    use_proc_partitions($hd);
		}
	    }
	    member($_->{device}, @{$flags->{clear} || []}) and partition_table::remove($hd, $_)
	      foreach partition_table::get_normal_parts($hd);
	}

	# special case for Various type
	$_->{type} = typeOfPart($_->{device}) || 0x100 foreach grep { $_->{type} == 0x100 } partition_table::get_normal_parts($hd);

	#- special case for type overloading (eg: reiserfs is 0x183)
	foreach (grep { isExt2($_) || $_->{type} == 0x7 } partition_table::get_normal_parts($hd)) {
	    my $type = typeOfPart($_->{device});
	    $_->{type} = $type if $type > 0x100 || $type && $hd->isa('partition_table::gpt');
	}
	push @hds, $hd;
    }

    #- detect raids before LVM allowing LVM on raid
    my $raids = raids(\@hds);
    my $all_hds = { %{ empty_all_hds() }, hds => \@hds, lvms => [], raids => $raids };

    $all_hds->{lvms} = [ lvms($all_hds) ];

    fs::get_major_minor(get_all_fstab($all_hds));

    $all_hds;
}

sub get_hds {
    #- $in is optional
    my ($flags, $in) = @_;

    if ($in) {
	catch_cdie { hds($flags, sub {
	    my ($dev, $err) = @_;
            $in->ask_yesorno(N("Error"), 
N("I can't 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 loose all the partitions?
", $dev, formatError($err)));
        }) } sub { $in->ask_okcancel('', formatError($@)) };
    } else {
	catch_cdie { hds($flags) } sub { 1 }
    }
}

sub read_proc_partitions_raw() {
    my (undef, undef, @all) = cat_("/proc/partitions");
    grep {
	$_->{size} != 1 &&	 # skip main extended partition
	$_->{size} != 0x3fffffff # skip cdroms (otherwise stops cd-audios)
    } map { 
	my %l; 
	@l{qw(major minor size dev)} = split; 
	\%l;
    } @all;
}

sub read_proc_partitions {
    my ($hds) = @_;

    my @all = read_proc_partitions_raw();
    my @parts = grep { $_->{dev} =~ /\d$/ } @all;
    my @disks = grep { $_->{dev} !~ /\d$/ } @all;

    my $devfs_like = any { $_->{dev} =~ m|/disc$| } @disks;

    my %devfs2normal = map {
	my (undef, $major, $minor) = devices::entry($_->{device});
	my $disk = find { $_->{major} == $major && $_->{minor} == $minor } @disks;
	$disk->{dev} => $_->{device};
    } @$hds;

    my $prev_part;
    foreach my $part (@parts) {
	my $dev;
	if ($devfs_like) {


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