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|
#!/usr/bin/perl
use MDK::Common;
my $SLASH_LOCATION = '/tmp/drakx-in-chroot';
my $verbose = 0;
my $prefix_ROOTED = '/mnt';
my $IMAGE_LOCATION_ROOTED = '/tmp/image';
my $MEDIA_LOCATION_ROOTED = '/tmp/media';
my $STAGE2_LOCATION_ROOTED = '/tmp/stage2';
my $LOOP_MOUNT_POINT = "$SLASH_LOCATION/tmp/loop";
my $LIVE_LOCATION_REL = 'install/stage2/live/';
my $COMPRESSED_LOCATION_REL = 'install/stage2/';
my $COMPRESSED_FILE_REL = $COMPRESSED_LOCATION_REL . 'mdkinst.sqfs';
my $AUTO_INSTALL_ROOTED = '/tmp/auto_inst.cfg.pl';
my $DEFCFG_ROOTED = '/tmp/defcfg.pl';
my $RPMSRATE_ROOTED = '/tmp/rpmsrate';
my $resolution = '800x600';
my ($disk_iso_repository, $repository_uri);
@ARGV >= 2 or die "usage: drakx-in-chroot <root of distrib> <dir to install to> [options]\n
\nOptions specific to drakx-in-chroot:
--flang XX use XX locale
--disk-iso path of a distro
--resolution=XXXxYYYY (eg: --resolution=1024x768)\n
--repository=<path> path of packages repository
--text text mode installer
";
(my $repository, my $dir, @ARGV) = @ARGV;
my ($wrapper);
foreach (@ARGV) {
if (/--resolution=(.*)/) {
$resolution = $1;
} elsif (/--disk-iso=(.*)/) {
$disk_iso_repository = $1;
} elsif (/--repository=(.*)/) {
$repository_uri = $1;
} elsif (/--gdb/) {
$wrapper = "gdb -q --args";
} elsif (/--strace/) {
$wrapper = "strace -e file";
}
}
my ($repository_without_arch, $repository_arch) = basename($repository) eq arch() ? (dirname($repository), '/' . arch()) : ($repository, '');
my $STAGE2_LOCATION = $SLASH_LOCATION . $STAGE2_LOCATION_ROOTED;
my $sudo;
if ($>) {
$sudo = "sudo";
$ENV{PATH} = "/sbin:/usr/sbin:$ENV{PATH}";
}
undef $ENV{TMPDIR}; # prevent packdrake faillure on creating temporary files
if (-d $SLASH_LOCATION) {
umount_all() == 0 or exit(1);
sys("$sudo rm -rf $SLASH_LOCATION/var/lib/rpm $SLASH_LOCATION/dev/mapper");
rm_rf($SLASH_LOCATION);
}
mkdir_p("$SLASH_LOCATION$_") foreach '/dev', '/dev/usb', '/etc', '/var', '/proc', '/sys', '/run', $STAGE2_LOCATION_ROOTED, $MEDIA_LOCATION_ROOTED, $prefix_ROOTED;
sys("$sudo rm -rf $dir") if $ENV{CLEAN};
-e $dir or sys("$sudo mkdir -p $dir");
copy_auto_install_files();
my $remote_repository = $repository =~ m!^(ftp|http)://! && $1;
if ($remote_repository) {
my $local_mdkinst = "$SLASH_LOCATION/tmp/mdkinst.sqfs";
sys("curl --silent -o $local_mdkinst $repository/$COMPRESSED_FILE_REL");
mount_mdkinst($local_mdkinst);
} elsif (-d "$repository/$LIVE_LOCATION_REL") {
sys("$sudo mount -o bind $repository/$LIVE_LOCATION_REL $STAGE2_LOCATION");
} elsif (-e "$repository/$COMPRESSED_FILE_REL") {
mount_mdkinst("$repository/$COMPRESSED_FILE_REL");
}
sys("$sudo mount -o bind $dir $SLASH_LOCATION$prefix_ROOTED");
$repository_uri ||= $repository_without_arch if !$remote_repository;
sys("$sudo mount -o bind $repository_uri $SLASH_LOCATION$MEDIA_LOCATION_ROOTED") if $repository_uri;
sys("$sudo mount -t proc none $SLASH_LOCATION/proc");
sys("$sudo mount -t sysfs none $SLASH_LOCATION/sys");
sys("$sudo mount -t debugfs none $SLASH_LOCATION/sys/kernel/debug");
sys("$sudo mount -t tmpfs none $SLASH_LOCATION/run");
if (-d "/run/udev") {
# Ensure we mount the udev run dir for various extra metadata from udevadm
mkdir_p("$SLASH_LOCATION/run/udev");
sys("$sudo mount -o bind /run/udev $SLASH_LOCATION/run/udev");
}
if (-d "/run/initramfs") {
# If dracut has been used (and thus udev has yummy metadata) make sure
# drakx knows about it when running in the chroot
mkdir_p("$SLASH_LOCATION/run/initramfs");
sys("$sudo mount -o bind /run/initramfs $SLASH_LOCATION/run/initramfs");
}
if ($disk_iso_repository) {
my $repository_arch = $repository_arch || 'i586';
mkdir_p($LOOP_MOUNT_POINT);
sys("$sudo mount -o loop,ro $disk_iso_repository $LOOP_MOUNT_POINT");
symlinkf('loop/' . $repository_arch, "$SLASH_LOCATION$IMAGE_LOCATION_ROOTED"); # FIXME: arch()
}
symlinkf('media' . $repository_arch, "$SLASH_LOCATION$IMAGE_LOCATION_ROOTED");
create_initial_symlinks();
create_initial_devices();
apply_stage2_updates();
output("$SLASH_LOCATION/etc/hosts", "127.0.0.1 localhost\n") if ! -e "$SLASH_LOCATION/etc/hosts";
#- in the chroot, we have no way to know which device corresponds to the "/" partition.
#- so helping it by giving the device which provide major/minor information
mkdir_p("$dir/dev");
eval { cp_af($_, "$dir$_") } foreach qw(/dev/root);
#- if the DISPLAY is remote, we may need to resolve the name:
eval { cp_af($_, "$SLASH_LOCATION$_") } foreach qw(/etc/resolv.conf);
{
chomp(my $kernel_version = `uname -r`);
my $dir = "/modules/$kernel_version";
mkdir_p("$SLASH_LOCATION$dir");
output_p("$SLASH_LOCATION$dir" . $_, "\n") foreach "/lib/$dir/modules.dep", "/lib/$dir/modules.alias";
}
my $Xnest_pid;
my $Xnest_bin = find { whereis_binary($_) } 'Xephyr', 'Xnest';
if (!-f ($SLASH_LOCATION . $AUTO_INSTALL_ROOTED) && $Xnest_bin && join('', @ARGV) !~ /--text/) {
my $DISPLAY = ':8';
$Xnest_pid = fork();
if (!$Xnest_pid) {
exec $Xnest_bin, $DISPLAY, '-ac', ($Xnest_bin eq 'Xephyr' ? '-screen' : '-geometry'), $resolution or die "Xnest failed\n";
}
$ENV{DISPLAY} = '127.0.0.1' . $DISPLAY;
}
if (my $pid = fork()) {
waitpid $pid, 0;
umount_all() == 0 or warn "umounting failed\n";
$Xnest_pid and kill 15, $Xnest_pid;
} else {
$ENV{TERM} = 'linux'; # we only have terminfo for terminal "linux"
$ENV{HOME} = '/';
# to kept sync with gi/mdk-stage1/init.c::env:
$ENV{LD_LIBRARY_PATH}='/lib:/usr/lib:/mnt/lib:/mnt/usr/lib:/usr/X11R6/lib:/mnt/usr/X11R6/lib:/lib64:/usr/lib64:/usr/X11R6/lib64:/mnt/lib64:/mnt/usr/lib64:/mnt/usr/X11R6/lib64';
if ($remote_repository) {
$ENV{URLPREFIX} = $repository;
}
my $cmd = join(' ', "/usr/bin/runinstall2 --local_install",
if_($disk_iso_repository, "--method disk-iso"),
if_($remote_repository, "--method $remote_repository"),
@ARGV);
if ($wrapper) {
warn qq(GDB USAGE
Beware that debug info won't be found so on segfault
just generate a core dump with "gcore" and then
analyze it offline.
Thus you sessions will look like:
(gdb) run
(gdb) gcore
(gdb) exit
);
}
exec "$sudo $wrapper chroot $SLASH_LOCATION $cmd" or die "exec $cmd in $SLASH_LOCATION failed\n";
}
sub system_verbose { warn join(' ', @_), "\n" if $verbose; system(@_) }
sub sys { &system_verbose; $? and die qq(running "@_" failed: $?\n) }
sub mount_mdkinst {
my ($mdkinst) = @_;
sys("$sudo mount -t squashfs -o loop,ro $mdkinst $STAGE2_LOCATION");
}
sub create_initial_symlinks() {
foreach (cat_or_die("$STAGE2_LOCATION/usr/share/symlinks")) {
my ($from, $to_) = split;
my $to = $SLASH_LOCATION . ($to_ || $from);
$from = "$STAGE2_LOCATION_ROOTED$from" if !$to_;
if (! -l $to) {
symlink $from, $to or die "symlinking $to failed\n";
}
}
}
sub create_initial_devices() {
sys("$sudo cp -a /dev/{mem,null,random,urandom,tty} $SLASH_LOCATION/dev");
}
sub umount_all() {
my $err;
clean_stage2_updates();
my @procs = ('/proc', '/sys/kernel/debug', '/sys', '/run/udev', '/run/initramfs', '/run');
foreach ((map { "$prefix_ROOTED$_" } @procs, '/dev', ''), @procs, $STAGE2_LOCATION_ROOTED, $LOOP_MOUNT_POINT, $MEDIA_LOCATION_ROOTED, $IMAGE_LOCATION_ROOTED) {
my $dir = "$SLASH_LOCATION$_";
rmdir $dir;
if (-d $dir) {
if (m!/sys/kernel/debug! || begins_with($_, $prefix_ROOTED)) {
system_verbose "$sudo umount $dir 2>/dev/null";
next;
}
system_verbose "$sudo umount $dir";
}
rmdir $dir;
if (-d $dir) {
warn "$dir is busy\n";
$err++;
}
}
if (my @remaining = cat_('/proc/mounts') =~ m!($SLASH_LOCATION/mnt/\S+)!g) {
warn "umount those mount points first: ", join(' ', @remaining), "\n";
$err++;
}
$err;
}
sub copy_auto_install_files() {
my ($opt);
each_index {
if ($opt eq 'auto_install' && -f $_) {
cp_f($_, $SLASH_LOCATION . $AUTO_INSTALL_ROOTED);
$_ = $AUTO_INSTALL_ROOTED;
} elsif ($opt eq 'defcfg' && -f $_) {
cp_f($_, $SLASH_LOCATION . $DEFCFG_ROOTED);
$_ = $DEFCFG_ROOTED;
} elsif ($opt eq 'rpmsrate' && -f $_) {
cp_f($_, $SLASH_LOCATION . $RPMSRATE_ROOTED);
}
undef $opt;
/^--?(.*)/ and $opt = $1;
} @ARGV;
}
my @stage2_updates;
sub apply_stage2_updates() {
each_index {
if ($_ eq '--stage2-update') {
my $file = $ARGV[$::i+1];
my $dest = $ARGV[$::i+2];
if (-f $file && $dest) {
undef $_;
undef $ARGV[$::i+1];
undef $ARGV[$::i+2];
push @stage2_updates, $dest;
sys("$sudo mount --bind $file $STAGE2_LOCATION/$dest");
}
}
} @ARGV;
}
sub clean_stage2_updates() {
sys("$sudo umount $STAGE2_LOCATION/$_") foreach @stage2_updates;
}
|
