isodumper - Mageia ISO Dumper

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author	Yuri Chornoivan <yurchor@ukr.net>	2016-01-10 12:26:58 +0200
committer	Yuri Chornoivan <yurchor@ukr.net>	2016-01-10 12:26:58 +0200
commit	00000cf484dfaa5f7e252dd1c482bef3246e03ca (patch)
tree	e3a5e71b4b6eaccda211f902241ad367afff1836 /polkit/Makefile
parent	da8e5e5fcbe48bc3ba43bec83fa786e9228da7ca (diff)
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package bootloader; # $Id$

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

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


%vga_modes = (
'ask' => "Ask at boot",
'normal' => "Normal",
'0x0f01' => "80x50",
'0x0f02' => "80x43",
'0x0f03' => "80x28",
'0x0f05' => "80x30",
'0x0f06' => "80x34",
'0x0f07' => "80x60",
'0x0122' => "100x30",
 785 => "640x480 in 16 bits (FrameBuffer only)",
 788 => "800x600 in 16 bits (FrameBuffer only)",
 791 => "1024x768 in 16 bits (FrameBuffer only)",
 794 => "1280x1024 in 16 bits (FrameBuffer only)",
);

#-#####################################################################################
#- Functions
#-#####################################################################################

sub get {
    my ($kernel, $bootloader) = @_;
    $_->{kernel_or_dev} && $_->{kernel_or_dev} eq $kernel and return $_ foreach @{$bootloader->{entries}};
    undef;
}
sub get_label {
    my ($label, $bootloader) = @_;
    $_->{label} && lc(substr($_->{label}, 0, 15)) eq lc(substr($label, 0, 15)) and return $_ foreach @{$bootloader->{entries}};
    undef;
}

sub mkinitrd {
    my ($kernelVersion, $initrdImage) = @_;

    $::testing || -e "$::prefix/$initrdImage" and return 1;

    my $loop_boot = loopback::prepare_boot();

    modules::load('loop');
    if (!run_program::rooted($::prefix, "mkinitrd", "-v", "-f", $initrdImage, "--ifneeded", $kernelVersion)) {
	unlink("$::prefix/$initrdImage");
	die "mkinitrd failed";
    }
    loopback::save_boot($loop_boot);

    -e "$::prefix/$initrdImage";
}

sub mkbootdisk {
    my ($kernelVersion, $dev, $append) = @_;

    modules::load(if_(arch() =~ /sparc/, 'romfs'), 'loop', 'vfat');
    my @l = if_($append, '--appendargs', $append);
    run_program::rooted_or_die($::prefix, 'mkbootdisk', '--noprompt', @l, '--device', "/dev/$dev", $kernelVersion);
}

sub read() {
    my $file = sprintf("/etc/%s.conf", arch() =~ /sparc/ ? 'silo' : arch() =~ /ppc/ ? 'yaboot' : 'lilo');
    my $global = 1;
    my ($e, $v);
    my %b;
    foreach (cat_("$::prefix$file")) {
	next if /^\s*#/ || /^\s*$/;
	($_, $v) = /^\s*([^=\s]+)\s*(?:=\s*(.*?))?\s*$/ or log::l("unknown line in lilo.conf: $_"), next;

	if (/^(image|other)$/) {
	    if (arch() =~ /ppc/) {
		$v =~ s/hd:\d+,//g;
	    }   
	    push @{$b{entries}}, $e = { type => $_, kernel_or_dev => $v };
	    $global = 0;
	} elsif ($global) {
	    if ($_ eq 'disk' && $v =~ /(\S+)\s+bios\s*=\s*(\S+)/) {
		$b{bios}{$1} = $2;
	    } elsif ($_ eq 'bios') {
		$b{bios}{$b{disk}} = $v;
	    } elsif ($_ eq 'init-message') {
		$v =~ s/\\n//g; 
		$v =~ s/"//g;
		$b{'init-message'} = $v;
	    } else {
		$b{$_} = $v || 1;
	    }
	} else {
	    if ((/map-drive/ .. /to/) && /to/) {
		$e->{mapdrive}{$e->{'map-drive'}} = $v;
	    } else {
		if (arch() =~ /ppc/) {
		    $v =~ s/hd:\d+,//g;
		    $v =~ s/"//g;
		}
		$e->{$_} = $v || 1 if !member($_, 'read-only');
	    }
	}
    }
    if (arch() !~ /ppc/) {
	delete $b{timeout} unless $b{prompt};
	sub remove_quotes_and_spaces {
	    local ($_) = @_;
	    s/^\s*//; s/\s*$//;
	    s/^"(.*?)"$/$1/;
	    $_;
	}
	$_->{append} = remove_quotes_and_spaces($_->{append}) foreach \%b, @{$b{entries}};
	$_->{label}  = remove_quotes_and_spaces($_->{label})  foreach @{$b{entries}};
	$b{default} = remove_quotes_and_spaces($b{default}) if $b{default};
	$b{timeout} = $b{timeout} / 10 if $b{timeout};
	$b{message} = cat_("$::prefix$b{message}") if $b{message};
    }

    #- cleanup duplicate labels (in case file is corrupted)
    my %seen;
    @{$b{entries}} = grep { !$seen{$_->{label}}++ } @{$b{entries}};

    \%b;
}

sub suggest_onmbr {
    my ($hd) = @_;
    
    my ($onmbr, $unsafe) = (1, 1);

    if (my $type = partition_table::raw::typeOfMBR($hd->{device})) {
	if (member($type, qw(dos dummy empty))) {
	    $unsafe = 0;
	} elsif (!member($type, qw(lilo grub))) {
	    $onmbr = 0;
	}
	log::l("bootloader::suggest_onmbr: type $type, onmbr $onmbr, unsafe $unsafe");
    }
    ($onmbr, $unsafe);
}

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

    (find { $_->{device} =~ /^sd/ } @$hds) && (find { $_->{device} =~ /^hd/ } @$hds) ||
      (find { $_->{device} =~ /^hd[e-z]/ } @$hds) && (find { $_->{device} =~ /^hd[a-d]/ } @$hds);
}

sub same_entries {
    my ($a, $b) = @_;

    foreach (uniq(keys %$a, keys %$b)) {
	if ($_ eq 'label') {
	    next;
	} elsif ($_ eq 'append') {
	    next if join(' ', sort split(' ', $a->{$_})) eq join(' ', sort split(' ', $b->{$_}))
	} else {
	    next if $a->{$_} eq $b->{$_};

	    my ($inode_a, $inode_b) = map { (stat "$::prefix$_")[1] } ($a->{$_}, $b->{$_});
	    next if $inode_a && $inode_b && $inode_a == $inode_b;
	}

	log::l("entries $a->{label} don't have same $_: $a->{$_} ne $b->{$_}");
	return;
    }
    1;
}

sub add_entry {
    my ($bootloader, $v) = @_;

    my $to_add = $v;
    foreach my $label ($v->{label}, map { 'old' . $_ . '_' . $v->{label} } ('', 2..10)) {
	my $conflicting = get_label($label, $bootloader);

	$to_add->{label} = $label;

	if ($conflicting) {
	    #- replacing $conflicting with $to_add
	    @{$bootloader->{entries}} = map { $_ == $conflicting ? $to_add : $_ } @{$bootloader->{entries}};
	} else {
	    #- we have found an unused label
	    push @{$bootloader->{entries}}, $to_add;
	}

	if (!$conflicting || same_entries($conflicting, $to_add)) {
	    log::l("current labels: " . join(" ", map { $_->{label} } @{$bootloader->{entries}}));
	    return $v;
	}
	$to_add = $conflicting;
    }
    die 'add_entry';
}

sub add_kernel {
    my ($bootloader, $version, $ext, $root, $v) = @_;

    #- new versions of yaboot don't handle symlinks
    my $ppcext = $ext;
    if (arch() =~ /ppc/) {
	$ext = "-$version";
    }

    log::l("adding vmlinuz$ext as vmlinuz-$version");
    -e "$::prefix/boot/vmlinuz-$version" or log::l("unable to find kernel image $::prefix/boot/vmlinuz-$version"), return;
    my $image = "/boot/vmlinuz" . ($ext ne "-$version" &&
				   symlinkf("vmlinuz-$version", "$::prefix/boot/vmlinuz$ext") ? $ext : "-$version");

    my $initrd = "/boot/initrd-$version.img";
    mkinitrd($version, $initrd) or undef $initrd;
    if ($initrd && $ext ne "-$version") {
	$initrd = "/boot/initrd$ext.img";
	symlinkf("initrd-$version.img", "$::prefix$initrd") or cp_af("$::prefix/boot/initrd-$version.img", "$::prefix$initrd");
    }

    my $label = $ext =~ /-(default)/ ? $1 : ($ext =~ /\d\./ ? sanitize_ver("linux-$version") : "linux$ext");

    #- more yaboot concessions - PPC
    if (arch() =~ /ppc/) {
	$label = $ppcext =~ /-(default)/ ? $1 : "linux$ppcext";
    }

    add2hash($v,
	     {
	      type => 'image',
	      root => "/dev/$root",
	      label => $label,
	      kernel_or_dev => $image,
	      initrd => $initrd,
	      append => $bootloader->{perImageAppend},
	     });
    add_entry($bootloader, $v);
}

sub duplicate_kernel_entry {
    my ($bootloader, $new_label) = @_;

    get_label($new_label, $bootloader) and return;

    my $entry = { %{ get_label('linux', $bootloader) }, label => $new_label };
    add_entry($bootloader, $entry);
}

sub unpack_append {
    my ($s) = @_;
    my @l = split(' ', $s);
    [ grep { !/=/ } @l ], [ map { if_(/(.*?)=(.*)/, [$1, $2]) } @l ];
}
sub pack_append {
    my ($simple, $dict) = @_;
    join(' ', @$simple, map { "$_->[0]=$_->[1]" } @$dict);
}

sub append__mem_is_memsize { $_[0] =~ /^\d+[kM]?$/i }

sub get_append {
    my ($b, $key) = @_;
    my (undef, $dict) = unpack_append($b->{perImageAppend});
    my @l = map { $_->[1] } grep { $_->[0] eq $key } @$dict;

    #- suppose we want the memsize
    @l = grep { append__mem_is_memsize($_) } @l if $key eq 'mem';

    log::l("more than one $key in $b->{perImageAppend}") if @l > 1;
    $l[0];
}
sub add_append {
    my ($b, $key, $val) = @_;

    foreach (\$b->{perImageAppend}, map { \$_->{append} } grep { $_->{type} eq 'image' } @{$b->{entries}}) {
	my ($simple, $dict) = unpack_append($$_);
	@$dict = grep { $_->[0] ne $key || $key eq 'mem' && append__mem_is_memsize($_->[1]) != append__mem_is_memsize($val) } @$dict;
	push @$dict, [ $key, $val ] if $val;
	$$_ = pack_append($simple, $dict);
	log::l("add_append: $$_");
    }
}
sub may_append {
    my ($b, $key, $val) = @_;
    add_append($b, $key, $val) if !get_append($b, $key);
}

sub configure_entry {
    my ($entry) = @_;
    if ($entry->{type} eq 'image') {
	my $specific_version;
	$entry->{kernel_or_dev} =~ /vmlinu.-(.*)/ and $specific_version = $1;
	readlink("$::prefix/$entry->{kernel_or_dev}") =~ /vmlinu.-(.*)/ and $specific_version = $1;

	if ($specific_version) {
	    $entry->{initrd} or $entry->{initrd} = "/boot/initrd-$specific_version.img";
	    mkinitrd($specific_version, $entry->{initrd}) or undef $entry->{initrd};
	}
    }
    $entry;
}

sub dev2prompath { #- SPARC only
    my ($dev) = @_;
    my ($wd, $num) = $dev =~ /^(.*\D)(\d*)$/;
    require c;
    $dev = c::disk2PromPath($wd) and $dev = $dev =~ /^sd\(/ ? "$dev$num" : "$dev;$num";
    $dev;
}

sub get_kernels_and_labels() {
    my $dir = "$::prefix/boot";
    my @l = grep { /^vmlinuz-/ } all($dir);
    my @kernels = grep { ! -l "$dir/$_" } @l;

    my @preferred = ('', 'secure', 'enterprise', 'smp');
    my %weights = map_index { $_ => $::i } @preferred;
    
    require pkgs;
    @kernels = 
      sort { c::rpmvercmp($b->[1], $a->[1]) || $weights{$a->[2]} <=> $weights{$b->[2]} } 
      grep { -d "$::prefix/lib/modules/$_->[0]" }
      map {
	  if (my ($version, $ext) = /vmlinuz-((?:[\-.\d]*(?:mdk)?)*)(.*)/) {
	      [ "$version$ext", $version, $ext ];
	  } else {
	      log::l("non recognised kernel name $_");
	      ();
	  }
      } @kernels;

    my %majors;
    foreach (@kernels) {
	push @{$majors{$1}}, $_ if $_->[1] =~ /^(2\.\d+)/
    }
    while (my ($major, $l) = each %majors) {
	$l->[0][1] = $major if @$l == 1;
    }

    my %labels;
    foreach (@kernels) {
	my ($complete_version, $version, $ext) = @$_;
	my $label = '';
	if (exists $labels{$label}) {
	    $label = "-$ext";
	    if (!$ext || $labels{$label}) {
		$label = "-$version$ext";
	    }
	}
	$labels{$label} = $complete_version;
    }
    %labels;
}

# sanitize_ver: long function when it could be shorter but we are sure
#		to catch everything and can be readable if we want to
#		add new scheme name.
# DUPLICATED from /usr/share/loader/common.pm
my $mdksub = "smp|enterprise|secure|linus|mosix|BOOT|custom";

sub sanitize_ver {
    my $string = shift;
    my $return;
    (my $ehad, my $chtaim, my $chaloch, my $arba, my $hamesh, my $chech); #where that names come from ;)

    $string =~ m|([^-]+)-([^-]+)(-([^-]+))?(-([^-]*))?|;
    $ehad = $1; $chtaim = $2; $chaloch = $3; $arba = $4; $hamesh = $5; $chech = $6;

    if ($chtaim =~ m|mdk| and $chech =~ m|mdk(${mdksub})|) { #new mdk with mdksub
	my $s = $1;
	$chtaim =~ m|^(\d+)\.(\d+)\.(\d+)\.(\d+)mdk|;
	$return = "$1$2$3-$4$s";
    } elsif ($chaloch =~ m|mdk| and $chtaim =~ /pre\d+/
	     and $arba =~ m|(\d+)mdk(${mdksub})?|) { #new mdk with mdksub
	my $r = $1;
	my $s = $2 ? $2 : "";
	$chtaim =~ m|^(\d+)\.(\d+)\.(\d+)pre(\d+)|;
	$return = "$1$2$3-p$4$r$s";
    } elsif ($chtaim =~ m|mdk$|) { #new mdk
	$chtaim =~ m|^(\d+)\.(\d+)\.(\d+)\.(\d+)mdk$|;
	$return = "$1$2$3-$4";
    } elsif ($chaloch =~ m|(\d+)mdk(${mdksub})$|) { #old mdk with mdksub
	my $s = "$1$2";
	$chtaim =~ m|^(\d+)\.(\d+)\.(\d+)|;
	$return = "$1$2$3-$s";
    } elsif ($chaloch =~ m|(\d+)mdk$|) { #old mdk
	my $s = $1;
	$chtaim =~ m|^(\d+)\.(\d+)\.(\d+)|;
	$return = "$1$2$3-$s";
    } elsif (not defined($chaloch)) { #linus/marcelo vanilla
	$chtaim =~ m|^(\d+)\.(\d+)\.(\d+)$|;
	$return = "$1$2$3";
    } else { #a pre ac vanilla or whatever with EXTRAVERSION
	$chtaim =~ m|^(\d+)\.(\d+)\.(\d+)$|;
	$return = "$1$2$3${chaloch}";
    }
    $return =~ s|\.||g; $return =~ s|mdk||; $return =~ s|secure|sec|; $return =~ s|enterprise|ent|;
    return $return;
}

sub suggest {
    my ($bootloader, $hds, $fstab, %options) = @_;
    my $root_part = fsedit::get_root($fstab);
    my $root = isLoopback($root_part) ? "loop7" : $root_part->{device};
    my $boot = fsedit::get_root($fstab, 'boot')->{device};
    my $partition = first($boot =~ /\D*(\d*)/);
    #- PPC xfs module requires enlarged initrd
    my $xfsroot = isThisFs("xfs", $root_part);

    require c; c::initSilo() if arch() =~ /sparc/;

    my ($onmbr, $unsafe) = $bootloader->{crushMbr} ? (1, 0) : suggest_onmbr($hds->[0]);
    add2hash_($bootloader, arch() =~ /sparc/ ?
	{
	 entries => [],
	 timeout => 10,
	 use_partition => 0, #- we should almost always have a whole disk partition.
	 root          => "/dev/$root",
	 partition     => $partition || 1,
	 boot          => $root eq $boot && "/boot", #- this helps for getting default partition for silo.
	} : arch() =~ /ppc/ ?
	{
	 defaultos => "linux",
	 entries => [],
	 'init-message' => "Welcome to Mandrake Linux!",
	 delay => 30,	#- OpenFirmware delay
	 timeout => 50,
	 enableofboot => 1,
	 enablecdboot => 1,
	 useboot => $boot,
	 xfsroot => $xfsroot,
	} :
	{
	 bootUnsafe => $unsafe,
	 entries => [],
	 timeout => $onmbr && 10,
	 nowarn => 1,
	   if_(arch() !~ /ia64/,
	 boot => "/dev/" . ($onmbr ? $hds->[0]{device} : fsedit::get_root($fstab, 'boot')->{device}),
	 map => "/boot/map",
         ),
	});


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