2 # Copyright (C) 2009-2010 Red Hat Inc.
4 # This library is free software; you can redistribute it and/or
5 # modify it under the terms of the GNU Lesser General Public
6 # License as published by the Free Software Foundation; either
7 # version 2 of the License, or (at your option) any later version.
9 # This library is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 # Lesser General Public License for more details.
14 # You should have received a copy of the GNU Lesser General Public
15 # License along with this library; if not, write to the Free Software
16 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 package Sys::Guestfs::Lib;
23 # The minor part of this version number is incremented when some
24 # change is made to this module. The major part is incremented if we
25 # make a change which is not backwards compatible. It is not related
26 # to the libguestfs version number.
27 use vars qw($VERSION);
33 use File::Temp qw/tempdir/;
34 use Locale::TextDomain 'libguestfs';
37 eval "use Sys::Virt;";
38 eval "use XML::XPath;";
39 eval "use XML::XPath::XMLParser;";
40 eval "use Win::Hivex;";
46 Sys::Guestfs::Lib - Useful functions for using libguestfs from Perl
50 use Sys::Guestfs::Lib qw(open_guest ...);
52 $g = open_guest ($name);
56 C<Sys::Guestfs::Lib> is an extra library of useful functions for using
57 the libguestfs API from Perl. It also provides tighter integration
60 The basic libguestfs API is not covered by this manpage. Please refer
61 instead to L<Sys::Guestfs(3)> and L<guestfs(3)>. The libvirt API is
62 also not covered. For that, see L<Sys::Virt(3)>.
64 =head1 DEPRECATION OF SOME FUNCTIONS
66 This module contains functions and code to perform inspection of guest
67 images. Since libguestfs 1.5.3 this ability has moved into the core
68 API (see L<guestfs(3)/INSPECTION>). The inspection functions in this
69 module are deprecated and will not be updated. Each deprecated
70 function is marked in the documentation below.
72 =head1 BASIC FUNCTIONS
78 use vars qw(@EXPORT_OK @ISA);
81 @EXPORT_OK = qw(open_guest feature_available
82 get_partitions resolve_windows_path
83 inspect_all_partitions inspect_partition
84 inspect_operating_systems mount_operating_system inspect_in_detail
85 inspect_linux_kernel);
89 $g = open_guest ($name);
91 $g = open_guest ($name, rw => 1, ...);
93 $g = open_guest ($name, address => $uri, ...);
95 $g = open_guest ([$img1, $img2, ...], address => $uri, format => $format, ...);
97 ($g, $conn, $dom, @images) = open_guest ($name);
99 This function opens a libguestfs handle for either the libvirt domain
100 called C<$name>, or the disk image called C<$name>. Any disk images
101 found through libvirt or specified explicitly are attached to the
104 The C<Sys::Guestfs> handle C<$g> is returned, or if there was an error
105 it throws an exception. To catch errors, wrap the call in an eval
108 The first parameter is either a string referring to a libvirt domain
109 or a disk image, or (if a guest has several disk images) an arrayref
110 C<[$img1, $img2, ...]>. For disk images, if the C<format> parameter
111 is specified then that format is forced.
113 The handle is I<read-only> by default. Use the optional parameter
114 C<rw =E<gt> 1> to open a read-write handle. However if you open a
115 read-write handle, this function will refuse to use active libvirt
118 The handle is still in the config state when it is returned, so you
119 have to call C<$g-E<gt>launch ()>.
121 The optional C<address> parameter can be added to specify the libvirt
124 The implicit libvirt handle is closed after this function, I<unless>
125 you call the function in C<wantarray> context, in which case the
126 function returns a tuple of: the open libguestfs handle, the open
127 libvirt handle, and the open libvirt domain handle, and a list of
128 [image,format] pairs. (This is useful if you want to do other things
129 like pulling the XML description of the guest). Note that if this is
130 a straight disk image, then C<$conn> and C<$dom> will be C<undef>.
132 If the C<Sys::Virt> module is not available, then libvirt is bypassed,
133 and this function can only open disk images.
135 The optional C<interface> parameter can be used to open devices with a
136 specified qemu interface. See L<Sys::Guestfs/guestfs_add_drive_opts>
147 my $rw = $params{rw};
148 my $address = $params{address};
149 my $interface = $params{interface};
150 my $format = $params{format}; # undef == autodetect
153 if (ref ($first) eq "ARRAY") {
155 } elsif (ref ($first) eq "SCALAR") {
158 croak __"open_guest: first parameter must be a string or an arrayref"
161 # Check each element of @images is defined.
162 # (See https://bugzilla.redhat.com/show_bug.cgi?id=601092#c3).
164 croak __"open_guest: first argument contains undefined element"
172 croak __x("guest image {imagename} does not exist or is not readable",
177 @images = map { [ $_, $format ] } @images;
179 die __"open_guest: no libvirt support (install Sys::Virt, XML::XPath and XML::XPath::XMLParser)"
180 unless exists $INC{"Sys/Virt.pm"} &&
181 exists $INC{"XML/XPath.pm"} &&
182 exists $INC{"XML/XPath/XMLParser.pm"};
184 die __"open_guest: too many domains listed on command line"
187 my @libvirt_args = ();
188 push @libvirt_args, address => $address if defined $address;
190 $conn = Sys::Virt->new (readonly => 1, @libvirt_args);
191 die __"open_guest: cannot connect to libvirt" unless $conn;
193 my @doms = $conn->list_defined_domains ();
194 my $isitinactive = 1;
196 # In the case where we want read-only access to a domain,
197 # allow the user to specify an active domain too.
198 push @doms, $conn->list_domains ();
202 if ($_->get_name () eq $images[0]) {
210 die __x("{imagename} is not the name of an inactive libvirt domain\n",
211 imagename => $images[0]);
213 die __x("{imagename} is not the name of a libvirt domain\n",
214 imagename => $images[0]);
218 # Get the names of the image(s).
219 my $xml = $dom->get_xml_description ();
221 my $p = XML::XPath->new (xml => $xml);
222 my $nodes = $p->find ('//devices/disk');
226 foreach $node ($nodes->get_nodelist) {
227 # The filename can be in dev or file attribute, hence:
228 my $filename = $p->find ('./source/@dev', $node);
230 $filename = $p->find ('./source/@file', $node);
231 next unless $filename;
233 $filename = $filename->to_literal;
235 # Get the disk format (may not be set).
236 my $format = $p->find ('./driver/@type', $node);
237 $format = $format->to_literal if $format;
239 push @disks, [ $filename, $format ];
242 die __x("{imagename} seems to have no disk devices\n",
243 imagename => $images[0])
249 # We've now got the list of @images, so feed them to libguestfs.
250 my $g = Sys::Guestfs->new ();
252 my @args = ($_->[0]);
253 push @args, format => $_->[1] if defined $_->[1];
254 push @args, readonly => 1 unless $rw;
255 push @args, iface => $interface if defined $interface;
256 $g->add_drive_opts (@args);
259 return wantarray ? ($g, $conn, $dom, @images) : $g
262 =head2 feature_available
264 $bool = feature_available ($g, $feature [, $feature ...]);
266 This function is a useful wrapper around the basic
267 C<$g-E<gt>available> call.
269 C<$g-E<gt>available> tests for availability of a list of features and
270 dies with an error if any is not available.
272 This call tests for the list of features and returns true if all are
273 available, or false otherwise.
275 For a list of features you can test for, see L<guestfs(3)/AVAILABILITY>.
279 sub feature_available {
282 eval { $g->available (\@_); };
286 =head2 get_partitions
288 This function is deprecated. It will not be updated in future
289 versions of libguestfs. New code should not use this function. Use
290 the core API function L<Sys::Guestfs(3)/list_filesystems> instead.
299 # Look to see if any devices directly contain filesystems (RHBZ#590167).
300 my @devices = $g->list_devices ();
301 my @fses_on_device = ();
303 eval { $g->mount_ro ($_, "/"); };
304 push @fses_on_device, $_ unless $@;
308 my @partitions = $g->list_partitions ();
309 my @pvs = $g->pvs ();
310 @partitions = grep { ! _is_pv ($_, @pvs) } @partitions;
313 @lvs = $g->lvs () if feature_available ($g, "lvm2");
315 return sort (@fses_on_device, @lvs, @partitions);
323 return 1 if $_ eq $t;
328 =head2 resolve_windows_path
330 $path = resolve_windows_path ($g, $path);
332 $path = resolve_windows_path ($g, "/windows/system");
333 ==> "/WINDOWS/System"
334 or undef if no path exists
336 This function, which is specific to FAT/NTFS filesystems (ie. Windows
337 guests), lets you look up a case insensitive C<$path> in the
338 filesystem and returns the true, case sensitive path as required by
339 the underlying kernel or NTFS-3g driver.
341 If C<$path> does not exist then this function returns C<undef>.
343 The C<$path> parameter must begin with C</> character and be separated
344 by C</> characters. Do not use C<\>, drive names, etc.
348 sub resolve_windows_path
354 eval { $r = $g->case_sensitive_path ($path); };
358 =head2 file_architecture
360 Deprecated function. Replace any calls to this function with:
362 $g->file_architecture ($path);
366 sub file_architecture
371 return $g->file_architecture ($path);
374 =head1 OPERATING SYSTEM INSPECTION FUNCTIONS
376 =head2 inspect_all_partitions
378 This function is deprecated. It will not be updated in future
379 versions of libguestfs. New code should not use this function. Use
380 the core API functions instead, see L<guestfs(3)/INSPECTION>.
384 # Turn /dev/vd* and /dev/hd* into canonical device names
385 # (see BLOCK DEVICE NAMING in guestfs(3)).
387 sub _canonical_dev ($)
390 return "/dev/sd$1" if $dev =~ m{^/dev/[vh]d(\w+)};
394 sub inspect_all_partitions
400 return map { _canonical_dev ($_) => inspect_partition ($g, $_) } @parts;
403 =head2 inspect_partition
405 This function is deprecated. It will not be updated in future
406 versions of libguestfs. New code should not use this function. Use
407 the core API functions instead, see L<guestfs(3)/INSPECTION>.
411 sub inspect_partition
415 my $dev = shift; # LV or partition name.
417 my %r; # Result hash.
419 # First try 'file(1)' on it.
420 my $file = $g->file ($dev);
421 if ($file =~ /ext2 filesystem data/) {
424 } elsif ($file =~ /ext3 filesystem data/) {
427 } elsif ($file =~ /ext4 filesystem data/) {
430 } elsif ($file =~ m{Linux/i386 swap file}) {
436 # If it's ext2/3/4, then we want the UUID and label.
437 if (exists $r{fstype} && $r{fstype} =~ /^ext/) {
438 $r{uuid} = $g->get_e2uuid ($dev);
439 $r{label} = $g->get_e2label ($dev);
442 # Try mounting it, fnarrr.
444 $r{is_mountable} = 1;
445 eval { $g->mount_ro ($dev, "/") };
447 # It's not mountable, probably empty or some format
448 # we don't understand.
449 $r{is_mountable} = 0;
454 if ($g->is_file ("/grub/menu.lst") ||
455 $g->is_file ("/grub/grub.conf")) {
456 $r{content} = "linux-grub";
457 _check_grub ($g, \%r);
462 if ($g->is_dir ("/etc") && $g->is_dir ("/bin") &&
463 $g->is_file ("/etc/fstab")) {
464 $r{content} = "linux-root";
466 _check_linux_root ($g, \%r);
471 if ($g->is_dir ("/etc") && $g->is_dir ("/bin") &&
472 $g->is_dir ("/share") && !$g->exists ("/local") &&
473 !$g->is_file ("/etc/fstab")) {
474 $r{content} = "linux-usrlocal";
479 if ($g->is_dir ("/etc") && $g->is_dir ("/bin") &&
480 $g->is_dir ("/share") && $g->exists ("/local") &&
481 !$g->is_file ("/etc/fstab")) {
482 $r{content} = "linux-usr";
487 if ($g->is_file ("/AUTOEXEC.BAT") ||
488 $g->is_file ("/autoexec.bat") ||
489 $g->is_dir ("/Program Files") ||
490 $g->is_dir ("/WINDOWS") ||
491 $g->is_file ("/boot.ini") ||
492 $g->is_file ("/ntldr")) {
493 $r{fstype} = "ntfs"; # XXX this is a guess
494 $r{fsos} = "windows";
495 $r{content} = "windows-root";
497 _check_windows_root ($g, \%r);
507 sub _check_linux_root
513 # Look into /etc to see if we recognise the operating system.
514 # N.B. don't use $g->is_file here, because it might be a symlink
515 if ($g->exists ("/etc/redhat-release")) {
516 $r->{package_format} = "rpm";
518 $_ = $g->cat ("/etc/redhat-release");
519 if (/Fedora release (\d+)(?:\.(\d+))?/) {
520 chomp; $r->{product_name} = $_;
521 $r->{osdistro} = "fedora";
522 $r->{os_major_version} = "$1";
523 $r->{os_minor_version} = "$2" if(defined($2));
524 $r->{package_management} = "yum";
527 elsif (/(Red Hat Enterprise Linux|CentOS|Scientific Linux)/) {
528 chomp; $r->{product_name} = $_;
532 if($distro eq "Red Hat Enterprise Linux") {
533 $r->{osdistro} = "rhel";
536 elsif($distro eq "CentOS") {
537 $r->{osdistro} = "centos";
538 $r->{package_management} = "yum";
541 elsif($distro eq "Scientific Linux") {
542 $r->{osdistro} = "scientific";
543 $r->{package_management} = "yum";
546 # Shouldn't be possible
549 if (/$distro.*release (\d+).*Update (\d+)/) {
550 $r->{os_major_version} = "$1";
551 $r->{os_minor_version} = "$2";
554 elsif (/$distro.*release (\d+)(?:\.(\d+))?/) {
555 $r->{os_major_version} = "$1";
558 $r->{os_minor_version} = "$2";
560 $r->{os_minor_version} = "0";
564 # Package management in RHEL changed in version 5
565 if ($r->{osdistro} eq "rhel") {
566 if ($r->{os_major_version} >= 5) {
567 $r->{package_management} = "yum";
569 $r->{package_management} = "rhn";
575 $r->{osdistro} = "redhat-based";
577 } elsif ($g->is_file ("/etc/debian_version")) {
578 $r->{package_format} = "deb";
579 $r->{package_management} = "apt";
581 $_ = $g->cat ("/etc/debian_version");
582 if (/(\d+)\.(\d+)/) {
583 chomp; $r->{product_name} = $_;
584 $r->{osdistro} = "debian";
585 $r->{os_major_version} = "$1";
586 $r->{os_minor_version} = "$2";
588 $r->{osdistro} = "debian";
592 # Parse the contents of /etc/fstab. This is pretty vital so
593 # we can determine where filesystems are supposed to be mounted.
594 eval "\$_ = \$g->cat ('/etc/fstab');";
596 my @lines = split /\n/;
599 my @fields = split /[ \t]+/;
601 my $spec = $fields[0]; # first column (dev/label/uuid)
602 my $file = $fields[1]; # second column (mountpoint)
603 if ($spec =~ m{^/} ||
604 $spec =~ m{^LABEL=} ||
605 $spec =~ m{^UUID=} ||
607 push @fstab, [$spec, $file]
611 $r->{fstab} = \@fstab if @fstab;
614 # Determine the architecture of this root.
616 foreach ("/bin/bash", "/bin/ls", "/bin/echo", "/bin/rm", "/bin/sh") {
617 if ($g->is_file ($_)) {
618 $arch = file_architecture ($g, $_);
623 $r->{arch} = $arch if defined $arch;
626 # We only support NT. The control file /boot.ini contains a list of
627 # Windows installations and their %systemroot%s in a simple text
630 # XXX We don't handle the case where /boot.ini is on a different
631 # partition very well (Windows Vista and later).
633 sub _check_windows_root
639 my $boot_ini = resolve_windows_path ($g, "/boot.ini");
640 $r->{boot_ini} = $boot_ini;
643 if (defined $r->{boot_ini}) {
644 $_ = $g->cat ($boot_ini);
645 my @lines = split /\n/;
650 } elsif (m/^default=.*?\\(\w+)$/i) {
653 } elsif (m/\\(\w+)=/) {
660 if (!defined $systemroot) {
661 # Last ditch ... try to guess %systemroot% location.
662 foreach ("windows", "winnt") {
663 my $dir = resolve_windows_path ($g, "/$_/system32");
671 if (defined $systemroot) {
672 $r->{systemroot} = resolve_windows_path ($g, "/$systemroot");
673 if (defined $r->{systemroot}) {
674 _check_windows_arch ($g, $r, $r->{systemroot});
675 _check_windows_registry ($g, $r, $r->{systemroot});
680 # Find Windows userspace arch.
682 sub _check_windows_arch
687 my $systemroot = shift;
690 resolve_windows_path ($g, $r->{systemroot} . "/system32/cmd.exe");
691 $r->{arch} = file_architecture ($g, $cmd_exe) if $cmd_exe;
694 sub _check_windows_registry
699 my $systemroot = shift;
701 # Download the system registry files. Only download the
702 # interesting ones (SOFTWARE and SYSTEM). We don't bother with
705 return unless exists $INC{"Win/Hivex.pm"};
707 my $configdir = resolve_windows_path ($g, "$systemroot/system32/config");
708 return unless defined $configdir;
710 my $tmpdir = tempdir (CLEANUP => 1);
712 my $software = resolve_windows_path ($g, "$configdir/software");
714 if (defined $software) {
716 $g->download ($software, "$tmpdir/software");
717 $software_hive = Win::Hivex->open ("$tmpdir/software");
720 $r->{windows_software_hive} = $software;
723 my $system = resolve_windows_path ($g, "$configdir/system");
725 if (defined $system) {
727 $g->download ($system, "$tmpdir/system");
728 $system_hive = Win::Hivex->open ("$tmpdir/system");
731 $r->{windows_system_hive} = $system;
734 # Get the ProductName, major and minor version, etc.
735 if (defined $software_hive) {
738 $cv_node = $software_hive->root;
739 $cv_node = $software_hive->node_get_child ($cv_node, $_)
740 foreach ("Microsoft", "Windows NT", "CurrentVersion");
745 my @values = $software_hive->node_values ($cv_node);
748 my $k = $software_hive->value_key ($_);
749 if ($k eq "ProductName") {
750 $_ = $software_hive->value_string ($_);
751 $r->{product_name} = $_ if defined $_;
752 } elsif ($k eq "CurrentVersion") {
753 $_ = $software_hive->value_string ($_);
754 if (defined $_ && m/^(\d+)\.(\d+)/) {
755 $r->{os_major_version} = $1;
756 $r->{os_minor_version} = $2;
758 } elsif ($k eq "CurrentBuild") {
759 $_ = $software_hive->value_string ($_);
760 $r->{windows_current_build} = $_ if defined $_;
761 } elsif ($k eq "SoftwareType") {
762 $_ = $software_hive->value_string ($_);
763 $r->{windows_software_type} = $_ if defined $_;
764 } elsif ($k eq "CurrentType") {
765 $_ = $software_hive->value_string ($_);
766 $r->{windows_current_type} = $_ if defined $_;
767 } elsif ($k eq "RegisteredOwner") {
768 $_ = $software_hive->value_string ($_);
769 $r->{windows_registered_owner} = $_ if defined $_;
770 } elsif ($k eq "RegisteredOrganization") {
771 $_ = $software_hive->value_string ($_);
772 $r->{windows_registered_organization} = $_ if defined $_;
773 } elsif ($k eq "InstallationType") {
774 $_ = $software_hive->value_string ($_);
775 $r->{windows_installation_type} = $_ if defined $_;
776 } elsif ($k eq "EditionID") {
777 $_ = $software_hive->value_string ($_);
778 $r->{windows_edition_id} = $_ if defined $_;
779 } elsif ($k eq "ProductID") {
780 $_ = $software_hive->value_string ($_);
781 $r->{windows_product_id} = $_ if defined $_;
794 # Grub version, if we care.
797 =head2 inspect_operating_systems
799 This function is deprecated. It will not be updated in future
800 versions of libguestfs. New code should not use this function. Use
801 the core API functions instead, see L<guestfs(3)/INSPECTION>.
805 sub inspect_operating_systems
813 foreach (sort keys %$fses) {
814 if ($fses->{$_}->{is_root}) {
819 _get_os_version ($g, \%r);
820 _assign_mount_points ($g, $fses, \%r);
825 # If we didn't find any operating systems then it's an error (RHBZ#591142).
826 if (0 == keys %oses) {
827 die __"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 virt-inspector.\n\nIf you feel this is an error, please file a bug report including as much\ninformation about the disk image as possible.\n";
839 $r->{os} = $r->{root}->{fsos} if exists $r->{root}->{fsos};
840 $r->{product_name} = $r->{root}->{product_name}
841 if exists $r->{root}->{product_name};
842 $r->{distro} = $r->{root}->{osdistro} if exists $r->{root}->{osdistro};
843 $r->{major_version} = $r->{root}->{os_major_version}
844 if exists $r->{root}->{os_major_version};
845 $r->{minor_version} = $r->{root}->{os_minor_version}
846 if exists $r->{root}->{os_minor_version};
847 $r->{package_format} = $r->{root}->{package_format}
848 if exists $r->{root}->{package_format};
849 $r->{package_management} = $r->{root}->{package_management}
850 if exists $r->{root}->{package_management};
851 $r->{arch} = $r->{root}->{arch} if exists $r->{root}->{arch};
854 sub _assign_mount_points
861 $r->{mounts} = { "/" => $r->{root_device} };
862 $r->{filesystems} = { $r->{root_device} => $r->{root} };
864 # Use /etc/fstab if we have it to mount the rest.
865 if (exists $r->{root}->{fstab}) {
866 my @fstab = @{$r->{root}->{fstab}};
868 my ($spec, $file) = @$_;
870 my ($dev, $fs) = _find_filesystem ($g, $fses, $spec, $file);
872 $r->{mounts}->{$file} = $dev;
873 $r->{filesystems}->{$dev} = $fs;
874 if (exists $fs->{used}) {
885 # Find filesystem by device name, LABEL=.. or UUID=..
895 foreach (sort keys %$fses) {
896 if (exists $fses->{$_}->{label} &&
897 $fses->{$_}->{label} =~ /$label/i) {
898 return ($_, $fses->{$_});
901 warn __x("unknown filesystem label {label}\n", label => $label);
903 } elsif (/^UUID=(.*)/) {
905 foreach (sort keys %$fses) {
906 if (exists $fses->{$_}->{uuid} &&
907 $fses->{$_}->{uuid} eq $uuid) {
908 return ($_, $fses->{$_});
911 warn __x("unknown filesystem UUID {uuid}\n", uuid => $uuid);
914 return ($_, $fses->{$_}) if exists $fses->{$_};
916 # The following is to handle the case where an fstab entry specifies a
917 # specific device rather than its label or uuid, and the libguestfs
918 # appliance has named the device differently due to the use of a
920 # This will work as long as the underlying drivers recognise devices in
922 if (m{^/dev/hd(.*)} && exists $fses->{"/dev/sd$1"}) {
923 return ("/dev/sd$1", $fses->{"/dev/sd$1"});
925 if (m{^/dev/xvd(.*)} && exists $fses->{"/dev/sd$1"}) {
926 return ("/dev/sd$1", $fses->{"/dev/sd$1"});
928 if (m{^/dev/mapper/(.*)-(.*)$} && exists $fses->{"/dev/$1/$2"}) {
929 return ("/dev/$1/$2", $fses->{"/dev/$1/$2"});
932 return () if $file =~ (/media\/cdrom/);
933 return () if m{/dev/cdrom};
934 return () if m{/dev/fd0};
936 warn __x("unknown filesystem {fs}\n", fs => $_);
941 =head2 mount_operating_system
943 This function is deprecated. It will not be updated in future
944 versions of libguestfs. New code should not use this function. Use
945 the core API functions instead, see L<guestfs(3)/INSPECTION>.
949 sub mount_operating_system
954 my $ro = shift; # Read-only?
956 $ro = 1 unless defined $ro; # ro defaults to 1 if unspecified
958 my $mounts = $os->{mounts};
960 # Have to mount / first. Luckily '/' is early in the ASCII
961 # character set, so this should be OK.
962 foreach (sort keys %$mounts) {
963 if($_ ne "swap" && $_ ne "none" && ($_ eq '/' || $g->is_dir ($_))) {
965 $g->mount_ro ($mounts->{$_}, $_)
967 $g->mount_options ("", $mounts->{$_}, $_)
973 =head2 inspect_in_detail
975 This function is deprecated. It will not be updated in future
976 versions of libguestfs. New code should not use this function. Use
977 the core API functions instead, see L<guestfs(3)/INSPECTION>.
981 sub inspect_in_detail
987 _check_for_applications ($g, $os);
988 _check_for_kernels ($g, $os);
989 if ($os->{os} eq "linux") {
990 _find_modprobe_aliases ($g, $os);
994 sub _check_for_applications
1002 my $osn = $os->{os};
1003 if ($osn eq "linux") {
1004 my $package_format = $os->{package_format};
1005 if (defined $package_format && $package_format eq "rpm") {
1008 @lines = $g->command_lines
1011 "%{name} %{epoch} %{version} %{release} %{arch}\n"]);
1014 warn(__x("Error running rpm -qa: {error}", error => $@)) if ($@);
1016 @lines = sort @lines;
1018 if (m/^(.*) (.*) (.*) (.*) (.*)$/) {
1020 undef $epoch if $epoch eq "(none)";
1031 } elsif (defined $package_format && $package_format eq "deb") {
1034 @lines = $g->command_lines
1036 "-f", '${Package} ${Version} ${Architecture} ${Status}\n',
1040 warn(__x("Error running dpkg-query: {error}", error => $@)) if ($@);
1042 @lines = sort @lines;
1044 if (m/^(.*) (.*) (.*) (.*) (.*) (.*)$/) {
1045 if ( $6 eq "installed" ) {
1056 } elsif ($osn eq "windows") {
1058 # I worked out a general plan for this, but haven't
1059 # implemented it yet. We can iterate over /Program Files
1060 # looking for *.EXE files, which we download, then use
1061 # i686-pc-mingw32-windres on, to find the VERSIONINFO
1062 # section, which has a lot of useful information.
1065 $os->{apps} = \@apps;
1068 # Find the path which needs to be prepended to paths in grub.conf to make them
1070 sub _find_grub_prefix
1074 my $fses = $os->{filesystems};
1075 die("filesystems undefined") unless(defined($fses));
1077 # Look for the filesystem which contains grub
1079 foreach my $dev (keys(%$fses)) {
1080 my $fsinfo = $fses->{$dev};
1081 if(exists($fsinfo->{content}) && $fsinfo->{content} eq "linux-grub") {
1087 my $mounts = $os->{mounts};
1088 die("mounts undefined") unless(defined($mounts));
1090 # Find where the filesystem is mounted
1091 if(defined($grubdev)) {
1092 foreach my $mount (keys(%$mounts)) {
1093 if($mounts->{$mount} eq $grubdev) {
1094 return "" if($mount eq '/');
1099 die("$grubdev defined in filesystems, but not in mounts");
1102 # If we didn't find it, look for /boot/grub/menu.lst, then try to work out
1103 # what filesystem it's on. We use menu.lst rather than grub.conf because
1104 # debian only uses menu.lst, and anaconda creates a symlink for it.
1105 die(__"Can't find grub on guest") unless($g->exists('/boot/grub/menu.lst'));
1107 # Look for the most specific mount point in mounts
1108 foreach my $path qw(/boot/grub /boot /) {
1109 if(exists($mounts->{$path})) {
1110 return "" if($path eq '/');
1115 die("Couldn't determine which filesystem holds /boot/grub/menu.lst");
1118 sub _check_for_kernels
1122 if ($os->{os} eq "linux" && feature_available ($g, "augeas")) {
1123 # Iterate over entries in grub.conf, populating $os->{boot}
1124 # For every kernel we find, inspect it and add to $os->{kernels}
1126 my $grub = _find_grub_prefix($g, $os);
1127 my $grub_conf = "/etc/grub.conf";
1129 # Debian and other's have no /etc/grub.conf:
1130 if ( ! -f "$grub_conf" ) {
1131 $grub_conf = "$grub/grub/menu.lst";
1140 # ->{title} = "Fedora (2.6.29.6-213.fc11.i686.PAE)"
1141 # ->{kernel} = \kernel
1142 # ->{cmdline} = "ro root=/dev/mapper/vg_mbooth-lv_root rhgb"
1143 # ->{initrd} = \initrd
1144 # ->{default} = \config
1145 # ->{grub_fs} = "/boot"
1147 $g->aug_init("/", 16);
1150 # Get all configurations from grub
1151 foreach my $bootable
1152 ($g->aug_match("/files/$grub_conf/title"))
1155 $config{title} = $g->aug_get($bootable);
1158 eval { $grub_kernel = $g->aug_get("$bootable/kernel"); };
1160 warn __x("Grub entry {title} has no kernel",
1161 title => $config{title});
1164 # Check we've got a kernel entry
1165 if(defined($grub_kernel)) {
1166 my $path = "$grub$grub_kernel";
1168 # Reconstruct the kernel command line
1170 foreach my $arg ($g->aug_match("$bootable/kernel/*")) {
1171 $arg =~ m{/kernel/([^/]*)$}
1172 or die("Unexpected return from aug_match: $arg");
1176 eval { $value = $g->aug_get($arg); };
1178 if(defined($value)) {
1179 push(@args, "$name=$value");
1184 $config{cmdline} = join(' ', @args) if(scalar(@args) > 0);
1187 if ($g->exists($path)) {
1189 inspect_linux_kernel($g, $path, $os->{package_format});
1191 warn __x("grub refers to {path}, which doesn't exist\n",
1195 # Check the kernel was recognised
1196 if(defined($kernel)) {
1197 # Put this kernel on the top level kernel list
1198 $os->{kernels} ||= [];
1199 push(@{$os->{kernels}}, $kernel);
1201 $config{kernel} = $kernel;
1203 # Look for an initrd entry
1206 $initrd = $g->aug_get("$bootable/initrd");
1211 _inspect_initrd($g, $os, "$grub$initrd",
1212 $kernel->{version});
1214 warn __x("Grub entry {title} does not specify an ".
1215 "initrd", title => $config{title});
1220 push(@configs, \%config);
1224 # Create the top level boot entry
1226 $boot{configs} = \@configs;
1227 $boot{grub_fs} = $grub;
1229 # Add the default configuration
1231 $boot{default} = $g->aug_get("/files/$grub_conf/default");
1234 $os->{boot} = \%boot;
1237 elsif ($os->{os} eq "windows") {
1242 =head2 inspect_linux_kernel
1244 This function is deprecated. It will not be updated in future
1245 versions of libguestfs. New code should not use this function. Use
1246 the core API functions instead, see L<guestfs(3)/INSPECTION>.
1250 sub inspect_linux_kernel
1252 my ($g, $path, $package_format) = @_;
1256 $kernel{path} = $path;
1258 # If this is a packaged kernel, try to work out the name of the package
1259 # which installed it. This lets us know what to install to replace it with,
1260 # e.g. kernel, kernel-smp, kernel-hugemem, kernel-PAE
1261 if($package_format eq "rpm") {
1263 eval { $package = $g->command(['rpm', '-qf', '--qf',
1264 '%{NAME}', $path]); };
1265 $kernel{package} = $package if defined($package);;
1268 # Try to get the kernel version by running file against it
1270 my $filedesc = $g->file($path);
1271 if($filedesc =~ /^$path: Linux kernel .*\bversion\s+(\S+)\b/) {
1275 # Sometimes file can't work out the kernel version, for example because it's
1276 # a Xen PV kernel. In this case try to guess the version from the filename
1278 if($path =~ m{/boot/vmlinuz-(.*)}) {
1281 # Check /lib/modules/$version exists
1282 if(!$g->is_dir("/lib/modules/$version")) {
1283 warn __x("Didn't find modules directory {modules} for kernel ".
1284 "{path}", modules => "/lib/modules/$version",
1291 warn __x("Couldn't guess kernel version number from path for ".
1292 "kernel {path}", path => $path);
1299 $kernel{version} = $version;
1304 my $prefix = "/lib/modules/$version";
1305 foreach my $module ($g->find ($prefix)) {
1306 if ($module =~ m{/([^/]+)\.(?:ko|o)$}) {
1307 $any_module = "$prefix$module" unless defined $any_module;
1312 $kernel{modules} = \@modules;
1314 # Determine kernel architecture by looking at the arch
1315 # of any kernel module.
1316 $kernel{arch} = file_architecture ($g, $any_module);
1321 # Find all modprobe aliases. Specifically, this looks in the following
1323 # * /etc/conf.modules
1324 # * /etc/modules.conf
1325 # * /etc/modprobe.conf
1326 # * /etc/modprobe.d/*
1328 sub _find_modprobe_aliases
1335 $g->aug_init("/", 16);
1337 my %modprobe_aliases;
1339 for my $pattern qw(/files/etc/conf.modules/alias
1340 /files/etc/modules.conf/alias
1341 /files/etc/modprobe.conf/alias
1342 /files/etc/modprobe.d/*/alias) {
1343 for my $path ( $g->aug_match($pattern) ) {
1344 $path =~ m{^/files(.*)/alias(?:\[\d*\])?$}
1345 or die __x("{path} doesn't match augeas pattern",
1350 $alias = $g->aug_get($path);
1353 $modulename = $g->aug_get($path.'/modulename');
1356 $aliasinfo{modulename} = $modulename;
1357 $aliasinfo{augeas} = $path;
1358 $aliasinfo{file} = $file;
1360 $modprobe_aliases{$alias} = \%aliasinfo;
1364 $os->{modprobe_aliases} = \%modprobe_aliases;
1367 # Get a listing of device drivers from an initrd
1370 my ($g, $os, $path, $version) = @_;
1374 # Disregard old-style compressed ext2 files and only work with real
1375 # compressed cpio files, since cpio takes ages to (fail to) process anything
1377 if ($g->exists($path) && $g->file($path) =~ /cpio/) {
1379 @modules = $g->initrd_list ($path);
1382 @modules = grep { m{([^/]+)\.(?:ko|o)$} } @modules;
1384 warn __x("{filename}: could not read initrd format",
1385 filename => "$path");
1389 # Add to the top level initrd_modules entry
1390 $os->{initrd_modules} ||= {};
1391 $os->{initrd_modules}->{$version} = \@modules;
1400 Copyright (C) 2009-2010 Red Hat Inc.
1404 Please see the file COPYING.LIB for the full license.
1408 L<virt-inspector(1)>,
1411 L<http://libguestfs.org/>,
1413 L<http://libvirt.org/>,