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 ();
my $oses = inspect_operating_systems ($g, \%fses);
my @roots = keys %$oses;
-die __"no root device found in this operating system image" if @roots == 0;
die __"multiboot operating systems are not supported by virt-cat" if @roots > 1;
my $root_dev = $roots[0];
# 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)>,