#!/usr/bin/perl -w
# virt-cat
-# Copyright (C) 2009 Red Hat Inc.
+# Copyright (C) 2009-2010 Red Hat Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
use strict;
use Sys::Guestfs;
-use Sys::Guestfs::Lib qw(open_guest get_partitions resolve_windows_path
- inspect_all_partitions inspect_partition
- inspect_operating_systems mount_operating_system);
+use Sys::Guestfs::Lib qw(open_guest);
use Pod::Usage;
use Getopt::Long;
+use File::Basename;
use Locale::TextDomain 'libguestfs';
=encoding utf8
If you specify guest block devices directly, then libvirt is not used
at all.
+=cut
+
+my $format;
+
+=item B<--format> raw
+
+Specify the format of disk images given on the command line. If this
+is omitted then the format is autodetected from the content of the
+disk image.
+
+If disk images are requested from libvirt, then this program asks
+libvirt for this information. In this case, the value of the format
+parameter is ignored.
+
+If working with untrusted raw-format guest disk images, you should
+ensure the format is always specified.
+
=back
=cut
GetOptions ("help|?" => \$help,
"version" => \$version,
"connect|c=s" => \$uri,
+ "format=s" => \$format,
) or pod2usage (2);
pod2usage (1) if $help;
if ($version) {
my $g;
if ($uri) {
- $g = open_guest (\@ARGV, address => $uri);
+ $g = open_guest (\@ARGV, address => $uri, format => $format);
} else {
- $g = open_guest (\@ARGV);
+ $g = open_guest (\@ARGV, format => $format);
}
$g->launch ();
-# List of possible filesystems.
-my @partitions = get_partitions ($g);
-
-# Now query each one to build up a picture of what's in it.
-my %fses =
- inspect_all_partitions ($g, \@partitions,
- use_windows_registry => 0);
-
-my $oses = inspect_operating_systems ($g, \%fses);
-
-my @roots = keys %$oses;
-die __"multiboot operating systems are not supported by virt-cat" if @roots > 1;
-my $root_dev = $roots[0];
-
-my $os = $oses->{$root_dev};
-mount_operating_system ($g, $os);
+my @roots = $g->inspect_os ();
+if (@roots == 0) {
+ die __x("{prog}: No operating system could be detected inside this disk image.\n\nThis may be because the file is not a disk image, or is not a virtual machine\nimage, or because the OS type is not understood by libguestfs.\n\nIf you feel this is an error, please file a bug report including as much\ninformation about the disk image as possible.\n",
+ prog => basename ($0));
+}
+if (@roots > 1) {
+ die __x("{prog}: multiboot operating systems are not supported.\n",
+ prog => basename ($0))
+}
+my %fses = $g->inspect_get_mountpoints ($roots[0]);
+my @fses = sort { length $a <=> length $b } keys %fses;
+foreach (@fses) {
+ $g->mount_ro ($fses{$_}, $_);
+}
# Allow this to fail in case eg. the file does not exist.
# NB: https://bugzilla.redhat.com/show_bug.cgi?id=501888
print $g->download($filename, "/dev/stdout");
+=head1 SHELL QUOTING
+
+Libvirt guest names can contain arbitrary characters, some of which
+have meaning to the shell such as C<#> and space. You may need to
+quote or escape these characters on the command line. See the shell
+manual page L<sh(1)> for details.
+
=head1 SEE ALSO
L<guestfs(3)>,