diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/drakx-in-chroot | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/tools/drakx-in-chroot b/tools/drakx-in-chroot new file mode 100644 index 000000000..f93385b1c --- /dev/null +++ b/tools/drakx-in-chroot @@ -0,0 +1,114 @@ +#!/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 = $CLP_LOCATION_REL . 'mdkinst.clp'; + +my ($repository, $dir) = @ARGV; +my $STAGE2_LOCATION = $SLASH_LOCATION . $STAGE2_LOCATION_ROOTED; + +my $sudo; +if ($>) { + $sudo = "sudo"; + $ENV{PATH} = "/sbin:/usr/sbin:$ENV{PATH}"; +} + +if (-d $SLASH_LOCATION) { + umount_all() == 0 or die "$SLASH_LOCATION is busy\n"; + rm_rf($SLASH_LOCATION); +} + +mkdir_p("$SLASH_LOCATION$_") foreach '/dev', '/etc', '/var', '/proc', $STAGE2_LOCATION_ROOTED, $IMAGE_LOCATION_ROOTED, $prefix_ROOTED; + +if (-d "$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 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 -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"; + +if (whereis_binary('Xnest')) { + my $DISPLAY = ':8'; + system("Xnest $DISPLAY -ac -geometry 800x600 &"); + $ENV{DISPLAY} = $DISPLAY; +} + +if (my $pid = fork()) { + waitpid $pid, 0; + umount_all() == 0 or warn "umounting failed\n"; +} else { + $ENV{HOME} = '/'; + my $cmd = '/usr/bin/install2 --local_install'; + exec "$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 $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 $dir) { + if (m!/proc/bus/usb!) { + system_verbose "$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; +} |