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|
package MDV::Draklive::Initrd;
use MDK::Common;
use common;
use list_modules;
use MDV::Draklive::Utils;
use MDV::Draklive::StorageFS;
use MDV::Draklive::Loopback;
use MDV::Draklive::Overlay;
use File::Basename;
my %module_to_config = (
ext3 => 'EXT3_FS',
sd_mod => 'BLK_DEV_SD',
);
sub require_list_modules_chroot {
my ($live) = @_;
my $chroot_list_modules = cat_($live->get_system_root . "/usr/lib/libDrakX/list_modules.pm");
$chroot_list_modules =~ s/^package list_modules;\B/package list_modules_chroot;/;
my $tmp_list_modules = $live->get_system_root . "/tmp/list_modules_chroot.pm";
output_p($tmp_list_modules, $chroot_list_modules);
require $tmp_list_modules;
unlink $tmp_list_modules;
}
sub nls_modules {
my ($live) = @_;
my $fs = $live->{media}->get_media_setting('fs');
if_($fs eq 'vfat', 'nls_cp437'), #- default FAT codepage
if_($fs !~ /^ext/, map { "nls_$_" } (map { "iso8859_$_" } 1..7, 9, 13..15), 'utf8');
}
sub create_media_initrd {
my ($live) = @_;
create_initrd_for_media($live, $live->{media});
cp_f($live->get_builddir . $live->{prefix}{build}{boot} . $live->{media}->get_initrd_path,
$live->{copy_initrd}) if $live->{copy_initrd};
}
sub inst_initrd_file {
my ($root, $initrd_tree, $file) = @_;
if ($file =~ m|/s?bin/|) {
inst_initrd_bin($root, $initrd_tree, $file);
} else {
mkdir_p($initrd_tree . dirname($file));
inst_initrd_dso_deps($root, $initrd_tree, $file) if $file =~ m|/lib[^/]*/|;
cp_f($root . $file, $initrd_tree . $file) or die "unable to copy $file from system chroot\n";
}
}
sub inst_initrd_dso_deps {
my ($root, $initrd_tree, $dso) = @_;
foreach my $file (`chroot $root ldd $dso | awk '/\\// {if(\$2 == "=>") {print \$3} else {print \$1}}'`) {
chomp $file;
$file =~ s!^(/lib[^/]*)/(?:i686|tls)!$1!;
my ($lib_prefix, $filename) = $file =~ m|(/lib[^/]*).*/([^/]+)$| or next;
my $dest = $initrd_tree . $lib_prefix . '/' . $filename;
mkdir_p($initrd_tree . $lib_prefix);
-f $dest || cp_f($root . $file, $dest) or die "unable to copy $filename from system chroot\n";
}
}
sub inst_initrd_bin {
my ($root, $initrd_tree, $bin) = @_;
cp_f($root . $bin, $initrd_tree . '/bin/');
inst_initrd_dso_deps($root, $initrd_tree, $bin);
}
sub create_initrd_for_media {
my ($live, $media) = @_;
my $initrd = $live->get_builddir . $live->{prefix}{build}{boot} . $media->get_initrd_path;
create_media_specific_initrd($live, $media, $live->get_system_root, $initrd, $live->find_kernel->{version});
}
sub create_media_specific_initrd {
my ($live, $media, $root, $initrd, $kernel) = @_;
require_list_modules_chroot($live);
my $lib_prefix = $live->get_lib_prefix;
my $initrd_tree = $live->get_builddir . $live->{prefix}{build}{initrd} . '/' . $media->{storage};
rm_rf($initrd_tree) if -e $initrd_tree;
mkdir_p($initrd_tree . $_) foreach
qw(/bin /dev /proc /sys /tmp),
map { $live->{prefix}{live}{mnt} . $_ }
$live->{prefix}{media}{mnt},
$live->{mount}{root},
map { $_->{mountpoint} } grep { !$loop_types{$_->{type}}{skip_mkdir} } @{$live->{mount}{dirs} || []};
#- use nash with label support
inst_initrd_bin($root, $initrd_tree, '/sbin/nash');
inst_initrd_bin($root, $initrd_tree, '/usr' . $lib_prefix . '/drakx-installer-binaries/probe-modules');
inst_initrd_bin($root, $initrd_tree, '/sbin/blockdev')
if $media->get_media_setting('rereadpt');
inst_initrd_bin($root, $initrd_tree, '/usr/bin/strace')
if $live->{debug};
#- busybox is required to:
#- detect usb-storage process (we need sh/while/ps/grep)
#- mount loopbacks read-only with losetup (useful over NFS)
my $busybox = '/usr/bin/busybox';
inst_initrd_bin($root, $initrd_tree, $busybox);
my $busybox_rooted = $root . $busybox;
my @l = map { /functions:/ .. /^$/ ? do { s/\s//g; split /,/ } : () } `$busybox_rooted`;
shift @l;
symlink('busybox', $initrd_tree . "/bin/$_") foreach @l;
my $fs = $media->get_media_setting('fs');
my @used_loop_types = uniq(map { $_->{type} } @{$live->{mount}{dirs}});
inst_initrd_bin($root, $initrd_tree, $_) foreach
MDV::Draklive::StorageFS::get_files($fs),
(map { @{$loop_types{$_} && $loop_types{$_}{files} || []} } @used_loop_types);
output_p($initrd_tree . '/etc/fstab', '');
output_p($initrd_tree . '/etc/mtab', '');
my $loop_nb = 254;
my $rrpt_dev = $media->get_media_setting('rereadpt');
require devices;
devices::make($initrd_tree . "/dev/$_") foreach
if_($rrpt_dev, $rrpt_dev),
qw(console initrd null ram systty tty tty1),
(map { "tty$_" } 0..8),
(map { "loop$_" } 0 .. $loop_nb);
syscall_('mknod', $initrd_tree . "/dev/ptmx", c::S_IFCHR(), makedev(5, 2)) or die "mknod failed (dev $_): $!";
syscall_('mknod', $initrd_tree . "/dev/fb", c::S_IFCHR(), makedev(29, 0)) or die "mknod failed (dev $_): $!";
#- pre-create devfsd compatibility loop devices (since busybox is still built with devfsd support)
mkdir_p($initrd_tree . "/dev/loop");
cp_af($initrd_tree . "/dev/loop$_", $initrd_tree . "/dev/loop/$_") foreach 0 .. $loop_nb;
print "using kernel $kernel\n";
my $kernel_root = "/lib/modules/" . $kernel;
list_modules::load_dependencies($kernel_root . "/modules.dep", $root);
my ($storage_modules, $skipped) = partition { list_modules::modname2filename($_) }
uniq(map { modules::cond_mapping_24_26($_) } list_modules_chroot::category2modules($media->get_media_setting('modules')));
my ($extra_modules, $extra_missing) = partition { list_modules::modname2filename($_) }
list_modules_chroot::category2modules($media->get_media_setting('media_modules')),
nls_modules($live),
$media->get_media_fs_module,
@{$media->get_media_setting('extra_modules') || []},
(map { @{$loop_types{$_}{modules} || []} } uniq(map { $_->{type} } @{$live->{mount}{dirs} || []})),
($live->{mount}{overlay} ? @{$MDV::Draklive::Overlay::overlay{$live->{mount}{overlay}}{modules} || []} : ());
my @additional_modules = map { if_(m!([^/]+)\.ko(?:\.gz)?!, list_modules::filename2modname($1)) } @{$live->{system}{additional_modules}};
@$extra_modules = difference2($extra_modules, \@additional_modules);
if (@{$live->{system}{exclude_modules} || []}) {
print STDERR "excluding modules: " . join(' ', @{$live->{system}{exclude_modules}}) . "\n";
@$_ = difference2($_, $live->{system}{exclude_modules}) foreach $storage_modules, $extra_modules, $extra_missing;
}
my @missing = sort(difference2($extra_missing, \@additional_modules));
if (@missing) {
my @config = map { if_(/^CONFIG_(.*)=y$/, $1) } cat_($root . "/boot/config-" . $kernel);
my @really_missing = grep { !member($module_to_config{$_}, @config) } @missing;
@really_missing and die "missing mandatory modules:\n" . join("\n", @really_missing, '');
}
mkdir_p($initrd_tree . $kernel_root . "/kernel");
my @modules = (@$storage_modules, @$extra_modules);
my @modules_closure = uniq(map { list_modules::dependencies_closure($_) } @modules);
foreach my $m (@modules_closure) {
my $full = list_modules::modname2path($m);
mkdir_p(dirname($initrd_tree . $full));
cp_f($root . $full, $initrd_tree . $full);
}
foreach my $f (@{$live->{system}{additional_modules}}) {
my $destdir = $initrd_tree . $kernel_root . "/kernel";
if ($f =~ /.gz$/) {
cp_f($live->{settings}{config_root} . '/' . $f, $destdir);
} else {
my $m = basename($f);
run_program::run('gzip', '>', "$destdir/$m.gz", '-c', $live->{settings}{config_root} . '/' . $f);
}
}
run_('depmod', '-b', $initrd_tree, $kernel);
mkdir_p($initrd_tree . "/etc/blkid"); #- for nash and showlabels cache
mkdir_p($initrd_tree . "/lib/module-init-tools");
cp_f($root . "/lib/module-init-tools/ldetect-lst-modules.alias", $initrd_tree . "/lib/module-init-tools");
mkdir_p($initrd_tree . "/usr/share/ldetect-lst");
cp_f($root . "/usr/share/pci.ids", $initrd_tree . "/usr/share");
cp_f($root . "/usr/share/ldetect-lst/" . $_, $initrd_tree . "/usr/share/ldetect-lst")
foreach qw(fallback-modules.alias pcitable.gz usbtable.gz);
@$skipped and print STDERR "skipped modules: " . join(' ', sort(@$skipped)) . "\n";
my @extra_modules_closure = map { list_modules::modname2filename($_) }
uniq(map { list_modules::dependencies_closure($_) } @$extra_modules);
create_initrd_scriptlet($live, $media, @extra_modules_closure, @additional_modules);
print "Compressing initrd\n";
compress_initrd_tree($live, $initrd_tree, $initrd);
add_splash($live, $initrd);
}
sub create_initrd_scriptlet {
my ($live, $media, @modules) = @_;
my $target = $live->{prefix}{live}{mnt} . ($live->{mount}{root} || $live->{prefix}{media}{mnt});
my $pre = $media->get_media_setting('pre');
my $fs = $media->get_media_setting('fs');
my $rrpt_dev = $media->get_media_setting('rereadpt');
my $debug_shell = "sh -c 'if grep -q initrd_debug /proc/cmdline; then plymouth --quit; exec sh </dev/console >/dev/console 2>/dev/console; fi'";
my ($mount_first, $mount_last) = partition { !$loop_types{$_->{type}}{delay_mount} }
grep { exists $loop_types{$_->{type}}{mount} } @{$live->{mount}{dirs} || []};
my $initrdroot = "/initrd";
output_with_perm($live->get_builddir . $live->{prefix}{build}{initrd} . '/' . $media->{storage} . '/linuxrc', 0755,
join("\n",
"#!/bin/nash",
#- required for labels and ps
"nash-mount -t proc /proc /proc",
#- required for cdrom labels
"nash-mount -t sysfs /sys /sys",
"/bin/plymouthd",
"plymouth --show-splash",
(map { join(" ", "probe-modules", list_modules::filename2modname($_), grep { $_ } $live->{system}{module_options}{$_}) } @modules),
"probe-modules --$media->{storage}",
if_($rrpt_dev,
"echo *** Waiting for new partitions on device ${rrpt_dev} ***",
"sh -c 'while ! ls /sys/block/${rrpt_dev}/${rrpt_dev}* >/dev/null 2>&1; do sleep 3; blockdev --rereadpt /dev/${rrpt_dev} >/dev/null 2>&1; done'"),
$debug_shell,
if_($pre, deref_array($pre)),
"showlabels --removable",
MDV::Draklive::StorageFS::get_mount($fs)->($live, $media),
(map { $loop_types{$_->{type}}{mount}->($live, $_) } @$mount_first, @$mount_last),
($live->{mount}{overlay} ? $MDV::Draklive::Overlay::overlay{$live->{mount}{overlay}}{mount}->($live) : ()),
if_($live->{system}{initrd_pre_pivot}, deref_array($live->{system}{initrd_pre_pivot})),
"plymouth --newroot=$target",
"echo 0x0100 > /proc/sys/kernel/real-root-dev",
"umount /sys",
"sh -c 'umount /proc/bus/usb 2>/dev/null'",
"umount /proc",
"pivot_root $target $target$initrdroot",
if_($live->{mount}{root}, "sh -c 'rmdir $initrdroot$live->{prefix}{live}{mnt}$live->{mount}{root}'"),
(map { $loop_types{$_->{type}}{pivot_clean}->($live, $_, $initrdroot) } grep { $loop_types{$_->{type}}{pivot_clean} } @{$live->{mount}{dirs} || []}),
"sh -c 'cd $initrdroot$live->{prefix}{live}{mnt}; for i in `ls -1`; do [ -d \$i ] || continue; mkdir -p $live->{prefix}{live}{mnt}/\$i; mount -n --move \$i $live->{prefix}{live}{mnt}/\$i; rmdir \$i; done'",
"rmdir $initrdroot$live->{prefix}{live}{mnt}",
"nash-mount -o mode=0755 -t tmpfs /dev /dev",
"sh -c 'rm -rf /dev/loop'", #- not needed after initrd
"sh -c 'mv $initrdroot/dev/* /dev/'",
if_($live->{system}{initrd_post}, deref_array($live->{system}{initrd_post})),
""));
}
sub compress_initrd_tree {
my ($live, $initrd_tree, $initrd) = @_;
my $size = chomp_(run_program::get_stdout("du -ks $initrd_tree | awk '{print \$1}'"));
my $inodes = chomp_(run_program::get_stdout("find $initrd_tree | wc -l")) + 100;
my $initrd_size = $size + 350 + int($inodes / 10); #- 10 inodes needs 1K
$initrd_size += 600; # splashy
$initrd =~ s/.gz$//;
mkdir_p(dirname($initrd));
run_('dd', 'if=/dev/zero', "of=$initrd", 'bs=1k', "count=$initrd_size");
run_('mke2fs', '-q', '-m', 0, '-F', '-N', $inodes, '-s', 1, $initrd);
mkdir_p($live->{mnt});
run_('mount', '-o', 'loop', '-t', 'ext2', $initrd, $live->{mnt});
cp_af(glob("$initrd_tree/*"), $live->{mnt});
rm_rf($live->{mnt} . "/lost+found");
my $left = chomp_(run_program::get_stdout("df -Pk $live->{mnt} | tail -n 1 | awk '{ print \$4 }'"));
run_('umount', $live->{mnt});
$left < 200 and die "not enough room to create initrd (only ${left}K left)\n";
run_('gzip', '-f', '-9', $initrd);
}
sub add_splash {
my ($live, $initrd) = @_;
if ($live->{system}{vga_mode} && $live->{system}{splash} ne 'no') {
my $chroot_initrd;
if ($initrd !~ m,^/boot/,) {
$chroot_initrd = '/tmp/initrd.gz';
cp_f($initrd, $live->get_system_root . $chroot_initrd);
} else {
$chroot_initrd = $initrd;
}
{
local $::prefix = $live->get_system_root;
#- also calls switch-themes -u (through make-boot-splash)
#- which will regenerate gfxboot current link
require bootloader;
bootloader::add_boot_splash($chroot_initrd, $live->{system}{vga_mode});
}
if ($chroot_initrd ne $initrd) {
cp_f($live->get_system_root . $chroot_initrd, $initrd);
unlink($live->get_system_root . $chroot_initrd);
}
}
}
sub create_classical_initrd {
my ($live) = @_;
my $root = $live->get_system_root;
my $kernel = $live->find_kernel;
print "using kernel $kernel->{version}\n";
run_('mount', '-t', 'proc', '/proc', $root . '/proc');
run_('mount', '-t', 'sysfs', '/sys', $root . '/sys');
{
my $bootloader = {};
local $::prefix = $root;
bootloader::add_kernel($bootloader, $kernel, { label => 'linux', vga => $live->{system}{vga_mode} }, '', $live->{system}{no_initrd});
}
run_('umount', $root . '/sys');
run_('umount', $root . '/proc');
}
1;
|
