html/virt-cat.1.html
html/virt-df.1.html
html/virt-inspector.1.html
+html/virt-rescue.1.html
images/100kallnewlines
images/100kallspaces
images/100kallzeroes
python/guestfs-py.c
python/guestfs.pyc
regressions/test1.img
+rescue/virt-rescue.1
ruby/bindtests.rb
ruby/ext/guestfs/extconf.h
ruby/ext/guestfs/_guestfs.c
regressions/
Regression tests.
+rescue/
+ The virt-rescue tool.
+
ruby/
Ruby bindings.
if HAVE_CAT
SUBDIRS += cat
endif
+if HAVE_RESCUE
+SUBDIRS += rescue
+endif
EXTRA_DIST = \
guestfs.pod guestfs-actions.pod guestfs-structs.pod \
load ext2
Maybe it's better to create these on the fly?
+
+virt-rescue pty
+---------------
+
+See:
+http://search.cpan.org/~rgiersig/IO-Tty-1.08/Pty.pm
+http://www.perlmonks.org/index.pl?node_id=582185
+
+Note that pty requires cooperation inside the C code too (there are
+two sides to a pty, and one has to be handled after the fork).
+
+virt-rescue TERM
+----------------
+
+Pass TERM from the library, through the kernel command line, to the
+init script.
exec guestfsd -f
fi
+# Use appliance in rescue mode, also used by the virt-rescue command.
TERM=linux ;# XXX library should pass this from library's environment
PS1='><rescue> '
export TERM PS1
+echo
+echo "Welcome to virt-rescue, the libguestfs rescue shell."
+echo
+echo "Note: The contents of / are the rescue appliance."
+echo "You have to mount the guest's partitions under /sysroot"
+echo "before you can examine them."
+echo
exec bash -i
fi
done
if test "x$missing_perl_modules" = "xyes"; then
- AC_MSG_WARN([some Perl modules required to compile virt-cat, virt-df and virt-inspector are missing])
+ AC_MSG_WARN([some Perl modules required to compile virt-cat, virt-df, virt-inspector and virt-rescue are missing])
fi
AM_CONDITIONAL([HAVE_CAT],
[test "x$PERL" != "xno" -a "x$missing_perl_modules" != "xyes"])
AM_CONDITIONAL([HAVE_INSPECTOR],
[test "x$PERL" != "xno" -a "x$missing_perl_modules" != "xyes"])
+AM_CONDITIONAL([HAVE_RESCUE],
+ [test "x$PERL" != "xno" -a "x$missing_perl_modules" != "xyes"])
dnl Library versioning.
MAX_PROC_NR=`cat $srcdir/src/MAX_PROC_NR`
cat/Makefile
df/Makefile
inspector/Makefile
+ rescue/Makefile
libguestfs.pc
gnulib/lib/Makefile
gnulib/tests/Makefile
if test "x$HAVE_DF" = "x"; then echo "yes"; else echo "no"; fi
echo -n "virt-inspector ...................... "
if test "x$HAVE_INSPECTOR" = "x"; then echo "yes"; else echo "no"; fi
+echo -n "virt-rescue ......................... "
+if test "x$HAVE_RESCUE" = "x"; then echo "yes"; else echo "no"; fi
echo "supermin appliance .................. $enable_supermin"
echo
echo "If any optional component is configured 'no' when you expected 'yes'"
perl/lib/Sys/Guestfs/Lib.pm
python/guestfs-py.c
regressions/test-noexec-stack.pl
+rescue/virt-rescue.pl
ruby/ext/guestfs/_guestfs.c
src/guestfs-actions.c
src/guestfs-bindtests.c
--- /dev/null
+# libguestfs virt-rescue
+# Copyright (C) 2009 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
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+EXTRA_DIST = \
+ run-rescue-locally \
+ virt-rescue.pl
+
+if HAVE_RESCUE
+
+man_MANS = virt-rescue.1
+
+noinst_DATA = @top_builddir@/html/virt-rescue.1.html
+
+virt-rescue.1: virt-rescue.pl
+ $(POD2MAN) \
+ --section 1 \
+ -c "Virtualization Support" \
+ --release "$(PACKAGE_NAME)-$(PACKAGE_VERSION)" \
+ $< > $@
+
+@top_builddir@/html/virt-rescue.1.html: virt-rescue.pl
+ mkdir -p @top_builddir@/html
+ cd @top_builddir@ && pod2html \
+ --css 'pod.css' \
+ --title 'virt-rescue, run a rescue shell on a virtual machine' \
+ --htmldir html \
+ --outfile html/virt-rescue.1.html \
+ rescue/$<
+
+install-data-hook:
+ mkdir -p $(DESTDIR)$(bindir)
+ install -m 0755 virt-rescue.pl $(DESTDIR)$(bindir)/virt-rescue
+
+endif
--- /dev/null
+#!/usr/bin/perl
+# virt-rescue
+# Copyright (C) 2009 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
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+# This script sets up the environment so you can run virt-rescue in
+# place without needing to do 'make install' first. You can also run
+# virt-rescue by creating a symlink to this script and putting it in
+# your path.
+#
+# Use it like this:
+# ./run-rescue-locally [usual virt-rescue args ...]
+
+use strict;
+use warnings;
+
+use File::Basename qw(dirname);
+use File::Spec;
+use Cwd qw(abs_path);
+
+my $path = $0;
+
+# Follow symlinks until we get to the real file
+while(-l $path) {
+ my $link = readlink($path);
+ if(File::Spec->file_name_is_absolute($link)) {
+ $path = $link;
+ } else {
+ $path = File::Spec->catfile(dirname($path), $link);
+ }
+}
+
+# Get the absolute path of the parent directory
+$path = abs_path(dirname($path).'/..');
+
+$ENV{LD_LIBRARY_PATH} = $path.'/src/.libs';
+$ENV{LIBGUESTFS_PATH} = $path.'/appliance';
+$ENV{PERL5LIB} = $path.'/perl/blib/lib:'.$path.'/perl/blib/arch';
+
+exec('perl', $path.'/rescue/virt-rescue.pl', @ARGV);
--- /dev/null
+#!/usr/bin/perl -w
+# virt-rescue
+# Copyright (C) 2009 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
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+use warnings;
+use strict;
+
+use Sys::Guestfs;
+use Sys::Guestfs::Lib qw(open_guest);
+use Pod::Usage;
+use Getopt::Long;
+use Locale::TextDomain 'libguestfs';
+
+=encoding utf8
+
+=head1 NAME
+
+virt-rescue - Run a rescue shell on a virtual machine
+
+=head1 SYNOPSIS
+
+ virt-rescue [--options] domname
+
+ virt-rescue [--options] disk.img [disk.img ...]
+
+=head1 DESCRIPTION
+
+virt-rescue gives you a rescue shell and some simple recovery tools
+which you can use on a virtual machine disk image.
+
+After running virt-rescue, what you see under C</> is the recovery
+appliance. You must mount the virtual machine's filesystems by hand,
+eg:
+
+ # lvs
+ LV VG Attr LSize Origin Snap% Move Log Copy% Convert
+ lv_root vg_f11x64 -wi-a- 8.83G
+ lv_swap vg_f11x64 -wi-a- 992.00M
+ # mount /dev/vg_f11x64/lv_root /sysroot
+ # ls /sysroot
+
+B<Note> that the virtual machine must not be powered on when you use
+this tool. Doing so will probably result in disk corruption in the
+VM. However if you use the I<--ro> (read only) option, then you can
+attach a shell to a running machine, but the results might be strange
+or inconsistent.
+
+This tool is just designed for quick interactive hacking on a virtual
+machine. For more structured access to a virtual machine disk image,
+you should use L<guestfs(3)>. To get a structured shell, use
+L<guestfish(1)>.
+
+=head1 OPTIONS
+
+=over 4
+
+=cut
+
+my $help;
+
+=item B<--help>
+
+Display brief help.
+
+=cut
+
+my $version;
+
+=item B<--version>
+
+Display version number and exit.
+
+=cut
+
+my $uri;
+
+=item B<--connect URI> | B<-c URI>
+
+If using libvirt, connect to the given I<URI>. If omitted, then we
+connect to the default libvirt hypervisor.
+
+If you specify guest block devices directly, then libvirt is not used
+at all.
+
+=cut
+
+my $readonly;
+
+=item B<--ro> | B<-r>
+
+Open the image read-only.
+
+=back
+
+=cut
+
+GetOptions ("help|?" => \$help,
+ "version" => \$version,
+ "connect|c=s" => \$uri,
+ "ro|r" => \$readonly,
+ ) or pod2usage (2);
+pod2usage (1) if $help;
+if ($version) {
+ my $g = Sys::Guestfs->new ();
+ my %h = $g->version ();
+ print "$h{major}.$h{minor}.$h{release}$h{extra}\n";
+ exit
+}
+
+pod2usage (__"virt-rescue: no image or VM names rescue given")
+ if @ARGV == 0;
+
+my @args = (\@ARGV);
+push @args, address => $uri if $uri;
+push @args, rw => 1 unless $readonly;
+my $g = open_guest (@args);
+
+$g->set_direct (1);
+$g->set_append ("guestfs_rescue=1");
+
+$g->launch ();
+
+exit 0;
+
+=head1 SEE ALSO
+
+L<guestfs(3)>,
+L<guestfish(1)>,
+L<virt-cat(1)>,
+L<Sys::Guestfs(3)>,
+L<Sys::Guestfs::Lib(3)>,
+L<Sys::Virt(3)>,
+L<http://libguestfs.org/>.
+
+=head1 AUTHOR
+
+Richard W.M. Jones L<http://et.redhat.com/~rjones/>
+
+=head1 COPYRIGHT
+
+Copyright (C) 2009 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
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
git.annexia.org / libguestfs.git / commitdiff