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 inspect_in_detail);
use Pod::Usage;
use Getopt::Long;
use Data::Dumper;
+use XML::Writer;
+use Locale::TextDomain 'libguestfs';
# Optional:
-eval "use Sys::Virt;";
+eval "use YAML::Any;";
=encoding utf8
=cut
+my $version;
+
+=item B<--version>
+
+Display version number and exit.
+
+=cut
+
my $uri;
=item B<--connect URI> | B<-c URI>
=cut
-my $force;
-
-=item B<--force>
+my $output = "text";
-Force reading a particular guest even if it appears to
-be active, or if the guest image is writable. This is
-dangerous and can even corrupt the guest image.
+=back
-=cut
+The following options select the output format. Use only one of them.
+The default is a readable text report.
-my $output = "text";
+=over 4
=item B<--text> (default)
-=item B<--xml>
-
-=item B<--perl>
+Plain text report.
-=item B<--fish>
+=item B<--none>
-=item B<--ro-fish>
+Produce no output at all.
-Select the output format. The default is a readable text report.
+=item B<--xml>
If you select I<--xml> then you get XML output which can be fed
to other programs.
+=item B<--yaml>
+
+If you select I<--yaml> then you get YAML output which can be fed
+to other programs.
+
+=item B<--perl>
+
If you select I<--perl> then you get Perl structures output which
can be used directly in another Perl program.
+=item B<--fish>
+
+=item B<--ro-fish>
+
If you select I<--fish> then we print a L<guestfish(1)> command
line which will automatically mount up the filesystems on the
correct mount points. Try this for example:
- eval `virt-inspector --fish guest.img`
+ guestfish $(virt-inspector --fish guest.img)
I<--ro-fish> is the same, but the I<--ro> option is passed to
guestfish so that the filesystems are mounted read-only.
+=item B<--query>
+
+In "query mode" we answer common questions about the guest, such
+as whether it is fullvirt or needs a Xen hypervisor to run.
+
+See section I<QUERY MODE> below.
+
+=cut
+
+my $windows_registry;
+
+=item B<--windows-registry>
+
+If this item is passed, I<and> the guest is Windows, I<and> the
+external program C<reged> is available (see SEE ALSO section), then we
+attempt to parse the Windows registry. This allows much more
+information to be gathered for Windows guests.
+
+This is quite an expensive and slow operation, so we don't do it by
+default.
+
=back
=cut
GetOptions ("help|?" => \$help,
+ "version" => \$version,
"connect|c=s" => \$uri,
- "force" => \$force,
+ "text" => sub { $output = "text" },
+ "none" => sub { $output = "none" },
"xml" => sub { $output = "xml" },
+ "yaml" => sub { $output = "yaml" },
"perl" => sub { $output = "perl" },
"fish" => sub { $output = "fish" },
"guestfish" => sub { $output = "fish" },
"ro-fish" => sub { $output = "ro-fish" },
- "ro-guestfish" => sub { $output = "ro-fish" })
- or pod2usage (2);
+ "ro-guestfish" => sub { $output = "ro-fish" },
+ "query" => sub { $output = "query" },
+ "windows-registry" => \$windows_registry,
+ ) or pod2usage (2);
pod2usage (1) if $help;
-pod2usage ("$0: no image or VM names given") if @ARGV == 0;
-
-# Domain name or guest image(s)?
+if ($version) {
+ my $g = Sys::Guestfs->new ();
+ my %h = $g->version ();
+ print "$h{major}.$h{minor}.$h{release}$h{extra}\n";
+ exit
+}
+pod2usage (__"virt-inspector: no image or VM names given") if @ARGV == 0;
+my $rw = 0;
+$rw = 1 if $output eq "fish";
+my $g;
my @images;
-if (-e $ARGV[0]) {
- @images = @ARGV;
-
- # Until we get an 'add_drive_ro' call, we must check that qemu
- # will only open this image in readonly mode.
- # XXX Remove this hack at some point ... or at least push it
- # into libguestfs.
-
- foreach (@images) {
- if (! -r $_) {
- die "guest image $_ does not exist or is not readable\n"
- } elsif (-w $_ && !$force) {
- die ("guest image $_ is writable! REFUSING TO PROCEED.\n".
- "You can use --force to override this BUT that action\n".
- "MAY CORRUPT THE DISK IMAGE.\n");
- }
- }
+if ($uri) {
+ my ($conn, $dom);
+ ($g, $conn, $dom, @images) =
+ open_guest (\@ARGV, rw => $rw, address => $uri);
} else {
- die "no libvirt support (install Sys::Virt)"
- unless exists $INC{"Sys/Virt.pm"};
-
- pod2usage ("$0: too many domains listed on command line") if @ARGV > 1;
-
- my $vmm;
- if (defined $uri) {
- $vmm = Sys::Virt->new (uri => $uri, readonly => 1);
- } else {
- $vmm = Sys::Virt->new (readonly => 1);
- }
- die "cannot connect to libvirt $uri\n" unless $vmm;
-
- my @doms = $vmm->list_defined_domains ();
- my $dom;
- foreach (@doms) {
- if ($_->get_name () eq $ARGV[0]) {
- $dom = $_;
- last;
- }
- }
- die "$ARGV[0] is not the name of an inactive libvirt domain\n"
- unless $dom;
-
- # Get the names of the image(s).
- my $xml = $dom->get_xml_description ();
-
- my $p = new XML::XPath::XMLParser (xml => $xml);
- my $disks = $p->find ("//devices/disk");
- print "disks:\n";
- foreach ($disks->get_nodelist) {
- print XML::XPath::XMLParser::as_string($_);
- }
-
- die "XXX"
+ my ($conn, $dom);
+ ($g, $conn, $dom, @images) =
+ open_guest (\@ARGV, rw => $rw);
}
-# We've now got the list of @images, so feed them to libguestfs.
-my $g = Sys::Guestfs->new ();
-$g->add_drive ($_) foreach @images;
$g->launch ();
$g->wait_ready ();
-# We want to get the list of LVs and partitions (ie. anything that
-# could contain a filesystem). Discard any partitions which are PVs.
-my @partitions = $g->list_partitions ();
-my @pvs = $g->pvs ();
-sub is_pv {
- my $t = shift;
- foreach (@pvs) {
- return 1 if $_ eq $t;
- }
- 0;
-}
-@partitions = grep { ! is_pv ($_) } @partitions;
-
-my @lvs = $g->lvs ();
-
=head1 OUTPUT FORMAT
Operating system(s)
afterwards and inspect the guest with everything mounted in the
right place. For example:
- eval `virt-inspector --ro-fish guest.img`
+ guestfish $(virt-inspector --ro-fish guest.img)
==> guestfish --ro -a guest.img -m /dev/VG/LV:/ -m /dev/sda1:/boot
=cut
# List of possible filesystems.
-my @devices = sort (@lvs, @partitions);
+my @partitions = get_partitions ($g);
# Now query each one to build up a picture of what's in it.
-my %fses = map { $_ => check_fs ($_) } @devices;
-
-# Now the complex checking code itself.
-# check_fs takes a device name (LV or partition name) and returns
-# a hashref containing everything we can find out about the device.
-sub check_fs {
- local $_;
- my $dev = shift; # LV or partition name.
-
- my %r; # Result hash.
-
- # First try 'file(1)' on it.
- my $file = $g->file ($dev);
- if ($file =~ /ext2 filesystem data/) {
- $r{fstype} = "ext2";
- $r{fsos} = "linux";
- } elsif ($file =~ /ext3 filesystem data/) {
- $r{fstype} = "ext3";
- $r{fsos} = "linux";
- } elsif ($file =~ /ext4 filesystem data/) {
- $r{fstype} = "ext4";
- $r{fsos} = "linux";
- } elsif ($file =~ m{Linux/i386 swap file}) {
- $r{fstype} = "swap";
- $r{fsos} = "linux";
- $r{is_swap} = 1;
- }
-
- # If it's ext2/3/4, then we want the UUID and label.
- if (exists $r{fstype} && $r{fstype} =~ /^ext/) {
- $r{uuid} = $g->get_e2uuid ($dev);
- $r{label} = $g->get_e2label ($dev);
- }
-
- # Try mounting it, fnarrr.
- if (!$r{is_swap}) {
- $r{is_mountable} = 1;
- eval { $g->mount_ro ($dev, "/") };
- if ($@) {
- # It's not mountable, probably empty or some format
- # we don't understand.
- $r{is_mountable} = 0;
- goto OUT;
- }
-
- # Grub /boot?
- if ($g->is_file ("/grub/menu.lst") ||
- $g->is_file ("/grub/grub.conf")) {
- $r{content} = "linux-grub";
- check_grub (\%r);
- goto OUT;
- }
-
- # Linux root?
- if ($g->is_dir ("/etc") && $g->is_dir ("/bin") &&
- $g->is_file ("/etc/fstab")) {
- $r{content} = "linux-root";
- $r{is_root} = 1;
- check_linux_root (\%r);
- goto OUT;
- }
-
- # Linux /usr/local.
- if ($g->is_dir ("/etc") && $g->is_dir ("/bin") &&
- $g->is_dir ("/share") && !$g->exists ("/local") &&
- !$g->is_file ("/etc/fstab")) {
- $r{content} = "linux-usrlocal";
- goto OUT;
- }
-
- # Linux /usr.
- if ($g->is_dir ("/etc") && $g->is_dir ("/bin") &&
- $g->is_dir ("/share") && $g->exists ("/local") &&
- !$g->is_file ("/etc/fstab")) {
- $r{content} = "linux-usr";
- goto OUT;
- }
-
- # Windows root?
- if ($g->is_file ("/AUTOEXEC.BAT") ||
- $g->is_file ("/autoexec.bat") ||
- $g->is_dir ("/Program Files") ||
- $g->is_dir ("/WINDOWS") ||
- $g->is_file ("/ntldr")) {
- $r{fstype} = "ntfs"; # XXX this is a guess
- $r{fsos} = "windows";
- $r{content} = "windows-root";
- $r{is_root} = 1;
- check_windows_root (\%r);
- goto OUT;
- }
- }
+my %fses =
+ inspect_all_partitions ($g, \@partitions,
+ use_windows_registry => $windows_registry);
- OUT:
- $g->umount_all ();
- return \%r;
-}
-
-sub check_linux_root
-{
- local $_;
- my $r = shift;
-
- # Look into /etc to see if we recognise the operating system.
- if ($g->is_file ("/etc/redhat-release")) {
- $_ = $g->cat ("/etc/redhat-release");
- if (/Fedora release (\d+\.\d+)/) {
- $r->{osdistro} = "fedora";
- $r->{osversion} = "$1"
- } elsif (/(Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\d+).*Update (\d+)/) {
- $r->{osdistro} = "redhat";
- $r->{osversion} = "$2.$3";
- } elsif (/(Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\d+(?:\.(\d+))?)/) {
- $r->{osdistro} = "redhat";
- $r->{osversion} = "$2";
- } else {
- $r->{osdistro} = "redhat";
- }
- } elsif ($g->is_file ("/etc/debian_version")) {
- $_ = $g->cat ("/etc/debian_version");
- if (/(\d+\.\d+)/) {
- $r->{osdistro} = "debian";
- $r->{osversion} = "$1";
- } else {
- $r->{osdistro} = "debian";
- }
- }
-
- # Parse the contents of /etc/fstab. This is pretty vital so
- # we can determine where filesystems are supposed to be mounted.
- eval "\$_ = \$g->cat ('/etc/fstab');";
- if (!$@ && $_) {
- my @lines = split /\n/;
- my @fstab;
- foreach (@lines) {
- my @fields = split /[ \t]+/;
- if (@fields >= 2) {
- my $spec = $fields[0]; # first column (dev/label/uuid)
- my $file = $fields[1]; # second column (mountpoint)
- if ($spec =~ m{^/} ||
- $spec =~ m{^LABEL=} ||
- $spec =~ m{^UUID=} ||
- $file eq "swap") {
- push @fstab, [$spec, $file]
- }
- }
- }
- $r->{fstab} = \@fstab if @fstab;
- }
-}
-
-sub check_windows_root
-{
- local $_;
- my $r = shift;
-
- # XXX Windows version.
- # List of applications.
-}
-
-sub check_grub
-{
- local $_;
- my $r = shift;
-
- # XXX Kernel versions, grub version.
-}
-
-#print Dumper (\%fses);
-
-#----------------------------------------------------------------------
-# Now find out how many operating systems we've got. Usually just one.
-
-my %oses = ();
-
-foreach (sort keys %fses) {
- if ($fses{$_}->{is_root}) {
- my %r = (
- root => $fses{$_},
- root_device => $_
- );
- get_os_version (\%r);
- assign_mount_points (\%r);
- $oses{$_} = \%r;
- }
-}
-
-sub get_os_version
-{
- local $_;
- my $r = shift;
-
- $r->{os} = $r->{root}->{fsos} if exists $r->{root}->{fsos};
- $r->{distro} = $r->{root}->{osdistro} if exists $r->{root}->{osdistro};
- $r->{version} = $r->{root}->{osversion} if exists $r->{root}->{osversion};
-}
-
-sub assign_mount_points
-{
- local $_;
- my $r = shift;
-
- $r->{mounts} = { "/" => $r->{root_device} };
- $r->{filesystems} = { $r->{root_device} => $r->{root} };
-
- # Use /etc/fstab if we have it to mount the rest.
- if (exists $r->{root}->{fstab}) {
- my @fstab = @{$r->{root}->{fstab}};
- foreach (@fstab) {
- my ($spec, $file) = @$_;
-
- my ($dev, $fs) = find_filesystem ($spec);
- if ($dev) {
- $r->{mounts}->{$file} = $dev;
- $r->{filesystems}->{$dev} = $fs;
- if (exists $fs->{used}) {
- $fs->{used}++
- } else {
- $fs->{used} = 1
- }
- }
- }
- }
-}
+#print "fses -----------\n";
+#print Dumper(\%fses);
-# Find filesystem by device name, LABEL=.. or UUID=..
-sub find_filesystem
-{
- local $_ = shift;
-
- if (/^LABEL=(.*)/) {
- my $label = $1;
- foreach (sort keys %fses) {
- if (exists $fses{$_}->{label} &&
- $fses{$_}->{label} eq $label) {
- return ($_, $fses{$_});
- }
- }
- warn "unknown filesystem label $label\n";
- return ();
- } elsif (/^UUID=(.*)/) {
- my $uuid = $1;
- foreach (sort keys %fses) {
- if (exists $fses{$_}->{uuid} &&
- $fses{$_}->{uuid} eq $uuid) {
- return ($_, $fses{$_});
- }
- }
- warn "unknown filesystem UUID $uuid\n";
- return ();
- } else {
- return ($_, $fses{$_}) if exists $fses{$_};
-
- if (m{^/dev/hd(.*)} && exists $fses{"/dev/sd$1"}) {
- return ("/dev/sd$1", $fses{"/dev/sd$1"});
- }
- if (m{^/dev/xvd(.*)} && exists $fses{"/dev/sd$1"}) {
- return ("/dev/sd$1", $fses{"/dev/sd$1"});
- }
+my $oses = inspect_operating_systems ($g, \%fses);
- return () if m{/dev/cdrom};
+#print "oses -----------\n";
+#print Dumper($oses);
- warn "unknown filesystem $_\n";
- return ();
- }
-}
-
-#print Dumper(\%oses);
-
-#----------------------------------------------------------------------
# Mount up the disks so we can check for applications
# and kernels. Skip this if the output is "*fish" because
# we don't need to know.
if ($output !~ /.*fish$/) {
my $root_dev;
- foreach $root_dev (sort keys %oses) {
- my $mounts = $oses{$root_dev}->{mounts};
- # Have to mount / first. Luckily '/' is early in the ASCII
- # character set, so this should be OK.
- foreach (sort keys %$mounts) {
- $g->mount_ro ($mounts->{$_}, $_)
- if $_ ne "swap" && ($_ eq '/' || $g->is_dir ($_));
- }
-
- check_for_applications ($root_dev);
- check_for_kernels ($root_dev);
-
+ foreach $root_dev (sort keys %$oses) {
+ my $os = $oses->{$root_dev};
+ mount_operating_system ($g, $os);
+ inspect_in_detail ($g, $os);
$g->umount_all ();
}
}
-sub check_for_applications
-{
- local $_;
- my $root_dev = shift;
-
- # XXX rpm -qa, look in Program Files, or whatever
-}
-
-sub check_for_kernels
-{
- local $_;
- my $root_dev = shift;
-
- # XXX
-}
-
#----------------------------------------------------------------------
# Output.
if ($output eq "fish" || $output eq "ro-fish") {
- my @osdevs = keys %oses;
+ my @osdevs = keys %$oses;
# This only works if there is a single OS.
- die "--fish output is only possible with a single OS\n" if @osdevs != 1;
+ die __"--fish output is only possible with a single OS\n" if @osdevs != 1;
my $root_dev = $osdevs[0];
- print "guestfish";
if ($output eq "ro-fish") {
- print " --ro";
+ print "--ro ";
}
- print " -a $_" foreach @images;
+ print "-a $_ " foreach @images;
- my $mounts = $oses{$root_dev}->{mounts};
+ my $mounts = $oses->{$root_dev}->{mounts};
# Have to mount / first. Luckily '/' is early in the ASCII
# character set, so this should be OK.
foreach (sort keys %$mounts) {
- print " -m $mounts->{$_}:$_" if $_ ne "swap";
+ print "-m $mounts->{$_}:$_ " if $_ ne "swap" && $_ ne "none";
}
print "\n"
}
# Perl output.
elsif ($output eq "perl") {
- print Dumper(\%oses);
+ print Dumper(%$oses);
+}
+
+# YAML output
+elsif ($output eq "yaml") {
+ die __"virt-inspector: no YAML support\n"
+ unless exists $INC{"YAML/Any.pm"};
+
+ print Dump(%$oses);
}
# Plain text output (the default).
output_xml ();
}
+# Query mode.
+elsif ($output eq "query") {
+ output_query ();
+}
+
sub output_text
{
- output_text_os ($oses{$_}) foreach sort keys %oses;
+ output_text_os ($oses->{$_}) foreach sort keys %$oses;
}
sub output_text_os
print $os->{os}, " " if exists $os->{os};
print $os->{distro}, " " if exists $os->{distro};
- print $os->{version}, " " if exists $os->{version};
+ print $os->{major_version} if exists $os->{major_version};
+ print ".", $os->{minor_version} if exists $os->{minor_version};
+ print " ";
print "on ", $os->{root_device}, ":\n";
- print " Mountpoints:\n";
+ print __" Mountpoints:\n";
my $mounts = $os->{mounts};
foreach (sort keys %$mounts) {
printf " %-30s %s\n", $mounts->{$_}, $_
}
- print " Filesystems:\n";
+ print __" Filesystems:\n";
my $filesystems = $os->{filesystems};
foreach (sort keys %$filesystems) {
print " $_:\n";
if exists $filesystems->{$_}{content};
}
- # XXX Applications.
- # XXX Kernel.
+ if (exists $os->{modprobe_aliases}) {
+ my %aliases = %{$os->{modprobe_aliases}};
+ my @keys = sort keys %aliases;
+ if (@keys) {
+ print __" Modprobe aliases:\n";
+ foreach (@keys) {
+ printf " %-30s %s\n", $_, $aliases{$_}->{modulename}
+ }
+ }
+ }
+
+ if (exists $os->{initrd_modules}) {
+ my %modvers = %{$os->{initrd_modules}};
+ my @keys = sort keys %modvers;
+ if (@keys) {
+ print __" Initrd modules:\n";
+ foreach (@keys) {
+ my @modules = @{$modvers{$_}};
+ print " $_:\n";
+ print " $_\n" foreach @modules;
+ }
+ }
+ }
+
+ print __" Applications:\n";
+ my @apps = @{$os->{apps}};
+ foreach (@apps) {
+ print " $_->{name} $_->{version}\n"
+ }
+
+ print __" Kernels:\n";
+ my @kernels = @{$os->{kernels}};
+ foreach (@kernels) {
+ print " $_->{version}\n";
+ my @modules = @{$_->{modules}};
+ foreach (@modules) {
+ print " $_\n";
+ }
+ }
+
+ if (exists $os->{root}->{registry}) {
+ print __" Windows Registry entries:\n";
+ # These are just lumps of text - dump them out.
+ foreach (@{$os->{root}->{registry}}) {
+ print "$_\n";
+ }
+ }
}
sub output_xml
{
- print "<operatingsystems>\n";
- output_xml_os ($oses{$_}) foreach sort keys %oses;
- print "</operatingsystems>\n";
+ my $xml = new XML::Writer(DATA_MODE => 1, DATA_INDENT => 2);
+
+ $xml->startTag("operatingsystems");
+ output_xml_os ($oses->{$_}, $xml) foreach sort keys %$oses;
+ $xml->endTag("operatingsystems");
+
+ $xml->end();
}
sub output_xml_os
{
- my $os = shift;
-
- print "<operatingsystem>\n";
-
- print "<os>", $os->{os}, "</os>\n" if exists $os->{os};
- print "<distro>", $os->{distro}, "</distro>\n" if exists $os->{distro};
- print "<version>", $os->{version}, "</version>\n" if exists $os->{version};
- print "<root>", $os->{root_device}, "</root>\n";
+ my ($os, $xml) = @_;
+
+ $xml->startTag("operatingsystem");
+
+ foreach ( [ "name" => "os" ],
+ [ "distro" => "distro" ],
+ [ "major_version" => "major_version" ],
+ [ "minor_version" => "minor_version" ],
+ [ "package_format" => "package_format" ],
+ [ "package_management" => "package_management" ],
+ [ "root" => "root_device" ] ) {
+ $xml->dataElement($_->[0], $os->{$_->[1]}) if exists $os->{$_->[1]};
+ }
- print "<mountpoints>\n";
+ $xml->startTag("mountpoints");
my $mounts = $os->{mounts};
foreach (sort keys %$mounts) {
- printf "<mountpoint dev='%s'>%s</mountpoint>\n",
- $mounts->{$_}, $_
+ $xml->dataElement("mountpoint", $_, "dev" => $mounts->{$_});
}
- print "</mountpoints>\n";
+ $xml->endTag("mountpoints");
- print "<filesystems>\n";
+ $xml->startTag("filesystems");
my $filesystems = $os->{filesystems};
foreach (sort keys %$filesystems) {
- print "<filesystem dev='$_'>\n";
- print "<label>$filesystems->{$_}{label}</label>\n"
- if exists $filesystems->{$_}{label};
- print "<uuid>$filesystems->{$_}{uuid}</uuid>\n"
- if exists $filesystems->{$_}{uuid};
- print "<type>$filesystems->{$_}{fstype}</type>\n"
- if exists $filesystems->{$_}{fstype};
- print "<content>$filesystems->{$_}{content}</content>\n"
- if exists $filesystems->{$_}{content};
- print "</filesystem>\n";
+ $xml->startTag("filesystem", "dev" => $_);
+
+ foreach my $field ( [ "label" => "label" ],
+ [ "uuid" => "uuid" ],
+ [ "type" => "fstype" ],
+ [ "content" => "content" ],
+ [ "spec" => "spec" ] ) {
+ $xml->dataElement($field->[0], $filesystems->{$_}{$field->[1]})
+ if exists $filesystems->{$_}{$field->[1]};
+ }
+
+ $xml->endTag("filesystem");
+ }
+ $xml->endTag("filesystems");
+
+ if (exists $os->{modprobe_aliases}) {
+ my %aliases = %{$os->{modprobe_aliases}};
+ my @keys = sort keys %aliases;
+ if (@keys) {
+ $xml->startTag("modprobealiases");
+ foreach (@keys) {
+ $xml->startTag("alias", "device" => $_);
+
+ foreach my $field ( [ "modulename" => "modulename" ],
+ [ "augeas" => "augeas" ],
+ [ "file" => "file" ] ) {
+ $xml->dataElement($field->[0], $aliases{$_}->{$field->[1]});
+ }
+
+ $xml->endTag("alias");
+ }
+ $xml->endTag("modprobealiases");
+ }
+ }
+
+ if (exists $os->{initrd_modules}) {
+ my %modvers = %{$os->{initrd_modules}};
+ my @keys = sort keys %modvers;
+ if (@keys) {
+ $xml->startTag("initrds");
+ foreach (@keys) {
+ my @modules = @{$modvers{$_}};
+ $xml->startTag("initrd", "version" => $_);
+ $xml->dataElement("module", $_) foreach @modules;
+ $xml->endTag("initrd");
+ }
+ $xml->endTag("initrds");
+ }
+ }
+
+ $xml->startTag("applications");
+ my @apps = @{$os->{apps}};
+ foreach (@apps) {
+ $xml->startTag("application");
+ $xml->dataElement("name", $_->{name});
+ $xml->dataElement("version", $_->{version});
+ $xml->endTag("application");
+ }
+ $xml->endTag("applications");
+
+ $xml->startTag("kernels");
+ my @kernels = @{$os->{kernels}};
+ foreach (@kernels) {
+ $xml->startTag("kernel", "version" => $_->{version});
+ $xml->startTag("modules");
+ my @modules = @{$_->{modules}};
+ foreach (@modules) {
+ $xml->dataElement("module", $_);
+ }
+ $xml->endTag("modules");
+ $xml->endTag("kernel");
+ }
+ $xml->endTag("kernels");
+
+ if (exists $os->{root}->{registry}) {
+ $xml->startTag("windowsregistryentries");
+ # These are just lumps of text - dump them out.
+ foreach (@{$os->{root}->{registry}}) {
+ $xml->dataElement("windowsregistryentry", $_);
+ }
+ $xml->endTag("windowsregistryentries");
+ }
+
+ $xml->endTag("operatingsystem");
+}
+
+=head1 QUERY MODE
+
+When you use C<virt-inspector --query>, the output is a series of
+lines of the form:
+
+ windows=no
+ linux=yes
+ fullvirt=yes
+ xen_pv_drivers=no
+
+(each answer is usually C<yes> or C<no>, or the line is completely
+missing if we could not determine the answer at all).
+
+If the guest is multiboot, you can get apparently conflicting answers
+(eg. C<windows=yes> and C<linux=yes>, or a guest which is both
+fullvirt and has a Xen PV kernel). This is normal, and just means
+that the guest can do both things, although it might require operator
+intervention such as selecting a boot option when the guest is
+booting.
+
+This section describes the full range of answers possible.
+
+=over 4
+
+=cut
+
+sub output_query
+{
+ output_query_windows ();
+ output_query_linux ();
+ output_query_rhel ();
+ output_query_fedora ();
+ output_query_debian ();
+ output_query_fullvirt ();
+ output_query_xen_domU_kernel ();
+ output_query_xen_pv_drivers ();
+ output_query_virtio_drivers ();
+}
+
+=item windows=(yes|no)
+
+Answer C<yes> if Microsoft Windows is installed in the guest.
+
+=cut
+
+sub output_query_windows
+{
+ my $windows = "no";
+ foreach my $os (keys %$oses) {
+ $windows="yes" if $oses->{$os}->{os} eq "windows";
+ }
+ print "windows=$windows\n";
+}
+
+=item linux=(yes|no)
+
+Answer C<yes> if a Linux kernel is installed in the guest.
+
+=cut
+
+sub output_query_linux
+{
+ my $linux = "no";
+ foreach my $os (keys %$oses) {
+ $linux="yes" if $oses->{$os}->{os} eq "linux";
+ }
+ print "linux=$linux\n";
+}
+
+=item rhel=(yes|no)
+
+Answer C<yes> if the guest contains Red Hat Enterprise Linux.
+
+=cut
+
+sub output_query_rhel
+{
+ my $rhel = "no";
+ foreach my $os (keys %$oses) {
+ $rhel="yes" if ($oses->{$os}->{os} eq "linux" &&
+ $oses->{$os}->{distro} eq "rhel");
+ }
+ print "rhel=$rhel\n";
+}
+
+=item fedora=(yes|no)
+
+Answer C<yes> if the guest contains the Fedora Linux distribution.
+
+=cut
+
+sub output_query_fedora
+{
+ my $fedora = "no";
+ foreach my $os (keys %$oses) {
+ $fedora="yes" if $oses->{$os}->{os} eq "linux" && $oses->{$os}->{distro} eq "fedora";
+ }
+ print "fedora=$fedora\n";
+}
+
+=item debian=(yes|no)
+
+Answer C<yes> if the guest contains the Debian Linux distribution.
+
+=cut
+
+sub output_query_debian
+{
+ my $debian = "no";
+ foreach my $os (keys %$oses) {
+ $debian="yes" if $oses->{$os}->{os} eq "linux" && $oses->{$os}->{distro} eq "debian";
+ }
+ print "debian=$debian\n";
+}
+
+=item fullvirt=(yes|no)
+
+Answer C<yes> if there is at least one operating system kernel
+installed in the guest which runs fully virtualized. Such a guest
+would require a hypervisor which supports full system virtualization.
+
+=cut
+
+sub output_query_fullvirt
+{
+ # The assumption is full-virt, unless all installed kernels
+ # are identified as paravirt.
+ # XXX Fails on Windows guests.
+ foreach my $os (keys %$oses) {
+ foreach my $kernel (@{$oses->{$os}->{kernels}}) {
+ my $is_pv = $kernel->{version} =~ m/xen/;
+ unless ($is_pv) {
+ print "fullvirt=yes\n";
+ return;
+ }
+ }
+ }
+ print "fullvirt=no\n";
+}
+
+=item xen_domU_kernel=(yes|no)
+
+Answer C<yes> if there is at least one Linux kernel installed in
+the guest which is compiled as a Xen DomU (a Xen paravirtualized
+guest).
+
+=cut
+
+sub output_query_xen_domU_kernel
+{
+ foreach my $os (keys %$oses) {
+ foreach my $kernel (@{$oses->{$os}->{kernels}}) {
+ my $is_xen = $kernel->{version} =~ m/xen/;
+ if ($is_xen) {
+ print "xen_domU_kernel=yes\n";
+ return;
+ }
+ }
+ }
+ print "xen_domU_kernel=no\n";
+}
+
+=item xen_pv_drivers=(yes|no)
+
+Answer C<yes> if the guest has Xen paravirtualized drivers installed
+(usually the kernel itself will be fully virtualized, but the PV
+drivers have been installed by the administrator for performance
+reasons).
+
+=cut
+
+sub output_query_xen_pv_drivers
+{
+ foreach my $os (keys %$oses) {
+ foreach my $kernel (@{$oses->{$os}->{kernels}}) {
+ foreach my $module (@{$kernel->{modules}}) {
+ if ($module =~ m/xen-/) {
+ print "xen_pv_drivers=yes\n";
+ return;
+ }
+ }
+ }
}
- print "</filesystems>\n";
+ print "xen_pv_drivers=no\n";
+}
+
+=item virtio_drivers=(yes|no)
- # XXX Applications.
- # XXX Kernel.
- print "</operatingsystem>\n";
+Answer C<yes> if the guest has virtio paravirtualized drivers
+installed. Virtio drivers are commonly used to improve the
+performance of KVM.
+
+=cut
+
+sub output_query_virtio_drivers
+{
+ foreach my $os (keys %$oses) {
+ foreach my $kernel (@{$oses->{$os}->{kernels}}) {
+ foreach my $module (@{$kernel->{modules}}) {
+ if ($module =~ m/virtio_/) {
+ print "virtio_drivers=yes\n";
+ return;
+ }
+ }
+ }
+ }
+ print "virtio_drivers=no\n";
}
+=back
+
=head1 SEE ALSO
L<guestfs(3)>,
L<guestfish(1)>,
L<Sys::Guestfs(3)>,
-L<Sys::Virt(3)>
+L<Sys::Guestfs::Lib(3)>,
+L<Sys::Virt(3)>,
+L<http://libguestfs.org/>.
+
+For Windows registry parsing we require the C<reged> program
+from L<http://home.eunet.no/~pnordahl/ntpasswd/>.
=head1 AUTHOR
Richard W.M. Jones L<http://et.redhat.com/~rjones/>
+Matthew Booth L<mbooth@redhat.com>
+
=head1 COPYRIGHT
Copyright (C) 2009 Red Hat Inc.
git.annexia.org / libguestfs.git / blobdiff