#!/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 $STAGE2_LOCATION_ROOTED = '/tmp/stage2'; my $LIVE_LOCATION_REL = 'install/stage2/live/'; my $CLP_LOCATION_REL = 'install/stage2/'; my $CLP_FILE_REL = $CLP_LOCATION_REL . 'mdkinst.clp'; @ARGV >= 2 or die "usage: drakx-in-chroot [options]\n"; (my $repository, my $dir, @ARGV) = @ARGV; 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 $SLASH_LOCATION) { umount_all() == 0 or die "$SLASH_LOCATION is busy\n"; 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', $STAGE2_LOCATION_ROOTED, $IMAGE_LOCATION_ROOTED, $prefix_ROOTED; sys("$sudo rm -rf $dir") if $ENV{CLEAN}; -e $dir or sys("$sudo mkdir -p $dir"); if (-d "$repository/$LIVE_LOCATION_REL") { sys("$sudo mount -o bind $repository/$LIVE_LOCATION_REL $STAGE2_LOCATION"); } elsif (-e "$repository/$CLP_FILE_REL") { my $dev = find_free_loop(); sys("$sudo modprobe gzloop"); sys("$sudo losetup -r -e gz $dev $repository/$CLP_FILE_REL"); sys("$sudo mount -r $dev $STAGE2_LOCATION"); } sys("$sudo mount -o bind $dir $SLASH_LOCATION$prefix_ROOTED"); sys("$sudo mount -o bind $repository $SLASH_LOCATION$IMAGE_LOCATION_ROOTED"); sys("$sudo mount -t proc none $SLASH_LOCATION/proc"); create_initial_symlinks(); create_initial_devices(); output("$SLASH_LOCATION/etc/hosts", "127.0.0.1 localhost\n") if ! -e "$SLASH_LOCATION/etc/hosts"; my $Xnest_pid; if (whereis_binary('Xnest')) { my $DISPLAY = ':8'; $Xnest_pid = fork(); if (!$Xnest_pid) { exec 'Xnest', $DISPLAY, '-ac', '-geometry', '800x600' or die "Xnest failed\n"; } $ENV{DISPLAY} = 'localhost' . $DISPLAY; } if (my $pid = fork()) { waitpid $pid, 0; umount_all() == 0 or warn "umounting failed\n"; kill 15, $Xnest_pid; } else { $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'; my $cmd = join(' ', "/usr/bin/runinstall2 --local_install", @ARGV); exec "$sudo 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 find_free_loop() { foreach (0..255) { my $dev = "/dev/loop$_"; system("$sudo losetup $dev >/dev/null 2>&1") != 0 or next; warn "found free loop $dev\n"; return $dev; } die "no free loop found"; } sub create_initial_symlinks() { foreach (cat_or_die("$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 $to failed\n"; } } } sub create_initial_devices() { foreach (cat_or_die("$STAGE2_LOCATION/usr/share/devices")) { my ($node, $type, $major, $minor) = split; sys("$sudo mknod $SLASH_LOCATION$node $type $major $minor") if ! -e "$SLASH_LOCATION$node"; } } sub umount_all() { my $err; my @procs = ('/proc/bus/usb', '/proc', '/sys'); foreach ((map { "$prefix_ROOTED$_" } @procs, ''), @procs, $STAGE2_LOCATION_ROOTED, $IMAGE_LOCATION_ROOTED) { my $dir = "$SLASH_LOCATION$_"; rmdir $dir; if (-d $dir) { if (m!/proc/bus/usb! || begins_with($_, $prefix_ROOTED)) { system_verbose "$sudo umount $dir 2>/dev/null"; next; } my ($loop) = cat_('/proc/mounts') =~ m!^(/dev/loop\d+) .*\Q$dir\E !m; system_verbose "$sudo umount $dir"; sys("$sudo losetup -d $loop") if $loop; } rmdir $dir; if (-d $dir) { warn "$dir is busy\n"; $err++; } } $err; }