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|
#!/usr/bin/perl
use lib qw(/usr/lib/libDrakX);
use Getopt::Long;
use common;
use bootloader;
$::isStandalone = 1; #- not using standalone which messes with @ARGV and usage
c::openlog('bootloader-config' . "[$$]");
$ENV{PATH} = "/sbin:/usr/sbin:$ENV{PATH}";
my %options = (
'action=s' => \ (my $action),
'label=s' => \ (my $label),
'chainload=s' => \ (my $chainload),
'image=s' => \ (my $image),
'kernel-version=s' => \ (my $kernel_version),
'initrd-options=s' => \ (my $initrd_options),
'no-short-name' => \ (my $no_short_name),
'no-entry' => \ (my $no_entry),
'no-launch' => \ (my $no_launch),
'no-initrd' => \ (my $no_initrd),
);
GetOptions(%options) && $action or die <<'EOF';
usage: bootloader-config --action add-kernel (--image <vmlinuz> | --kernel-version <2.6.xxx>) [--label <...>] [--no-short-name] [--initrd-options <options>]
bootloader-config --action remove-kernel (--image <vmlinuz> | --kernel-version <2.6.xxx>)
bootloader-config --action add-entry (--image <image> | --chainload <device>) --label <...>
bootloader-config --action remove-entry (--image <image> | --chainload <device> | --label <...>)
bootloader-config --action update-splash
bootloader-config --action remove-splash
bootloader-config --action rebuild-initrds
EOF
my @known_actions = qw(add-kernel remove-kernel update-splash remove-splash rebuild-initrds detectloader add-entry remove-entry add-resume2);
$action && member($action, @known_actions) or die "<action> must be one of " . join(' ', @known_actions) . "\n";
if ($image) {
if (my $ver = bootloader::vmlinuz2version($image)) {
if ($kernel_version) {
$kernel_version eq $ver or die "$kernel_version and $ver do not match (hint: do not pass both --image and --kernel-version)\n";
} else {
$kernel_version = $ver;
}
}
$image = "/boot/$image" if $image !~ m!^/!;
} elsif ($kernel_version) {
$image = "/boot/vmlinuz-$kernel_version";
}
my $all_hds = fsedit::get_hds();
fs::get_info_from_fstab($all_hds);
my $bootloader = bootloader::read($all_hds) or die "Cannot find a boot loader installed\n";
$action =~ s/-/_/g;
$::{$action}->();
#-###############################################################################
sub remove_now_broken_boot_symlinks() {
foreach (glob("/boot/vmlinuz*"), glob("/boot/initrd*")) {
-l $_ && !-e $_ or next;
log::l("removing now broken symlink $_");
unlink $_;
}
}
sub remove_kernel() {
unlink "/lib/modules/$kernel_version/build";
unlink "/lib/modules/$kernel_version/source";
remove_now_broken_boot_symlinks();
my %proposed_labels;
my @new_entries;
my ($to_remove, $to_keep) = partition {
if ($_->{kernel_or_dev} && $_->{kernel_or_dev} eq $image) {
1;
} else {
my $vmlinuz = $_->{kernel_or_dev} && bootloader::expand_vmlinuz_symlink($_->{kernel_or_dev});
if ($vmlinuz && "/boot/$vmlinuz" eq $image) {
#- eg: removing kernel XXX and entry "linux" has /boot/vmlinuz -> vmlinuz-XXX
#- so finding out which kernel still installed is better suited to use label "linux"
if (!%proposed_labels) {
%proposed_labels = bootloader::get_kernels_and_labels_before_kernel_remove($vmlinuz);
}
if (my $kernel_str = $proposed_labels{$_->{label}}) {
push @new_entries, [ $kernel_str, $_ ];
}
1;
} else {
0;
}
}
} @{$bootloader->{entries}};
$_->{initrd} && unlink $_->{initrd} foreach @$to_remove;
@{$bootloader->{entries}} = @$to_keep;
foreach (@new_entries) {
my ($kernel_str, $v) = @$_;
bootloader::add_kernel($bootloader, $kernel_str, $v);
}
modify_bootloader();
}
#-###############################################################################
sub add_kernel() {
bootloader::create_link_source();
my $kernel_str = bootloader::vmlinuz2kernel_str($image) or die "bad kernel name $image\n";
my $root_part = fs::get::root([ fs::get::fstab($all_hds) ]) or die "can not find root partition\n";
my %opts = (
root => fs::wild_device::from_part('', $root_part),
initrd_options => $initrd_options,
if_($label, label => $label),
(grep_each { member($::a, 'vga', 'lock') } %{$bootloader->{default_options}}),
);
#- short name
bootloader::add_kernel($bootloader, $kernel_str, { %opts }, 0, $no_initrd) if !$no_short_name;
#- long name
$kernel_str->{use_long_name} = 1;
bootloader::add_kernel($bootloader, $kernel_str, { %opts }, 1, $no_initrd);
modify_bootloader();
}
sub modify_bootloader() {
!$no_entry or return;
bootloader::action($bootloader, 'write', $all_hds);
bootloader::action($bootloader, 'when_config_changed') if !$no_launch;
}
#-###############################################################################
sub add_entry() {
$label or die "you must give a label\n";
($image xor $chainload) or die "you must give an image or a chainload\n";
my $entry = {
type => $image ? 'image' : 'other',
label => $label,
kernel_or_dev => $image || $chainload,
};
bootloader::add_entry($bootloader, $entry);
modify_bootloader();
}
sub _get_entry() {
listlength(grep { $_ } $label, $image, $chainload) == 1 or die "you must give one of --label, --image and --chainload\n";
$label ? bootloader::get_label($label, $bootloader) :
find { $_->{kernel_or_dev} && $_->{kernel_or_dev} eq ($image || $chainload) } @{$bootloader->{entries}};
}
sub remove_entry() {
my $e = _get_entry() or return;
@{$bootloader->{entries}} = grep { $_ != $e } @{$bootloader->{entries}};
modify_bootloader();
}
sub add_resume2() {
my $e = _get_entry() or return;
my ($simple, $dict) = bootloader::unpack_append($e->{append});
if (my $resume = find { $_->[0] eq 'resume' } @$dict) {
if (!any { $_->[0] eq 'resume2' } @$dict) {
push @$dict, [ resume2 => "swap:$resume->[1]" ];
$e->{append} = bootloader::pack_append($simple, $dict);
modify_bootloader();
}
}
}
#-###############################################################################
sub rebuild_initrds() {
bootloader::rebuild_initrds($bootloader);
bootloader::action($bootloader, 'when_config_changed') if !$no_launch;
}
#-###############################################################################
sub update_splash() {
bootloader::update_splash($bootloader);
bootloader::action($bootloader, 'when_config_changed') if !$no_launch;
}
sub remove_splash() {
foreach (@{$bootloader->{entries}}) {
bootloader::remove_boot_splash($_->{initrd}) if $_->{initrd};
}
bootloader::action($bootloader, 'when_config_changed') if !$no_launch;
}
sub detectloader() {
print uc(bootloader::main_method($bootloader->{method})), "\n" if $bootloader;
}
|
