[Libguestfs] [PATCH 2/2] tests: Regression test for RHBZ#701814.

From: "Richard W.M. Jones" <rjones(a)redhat.com&gt; This commit adds a tests/xml directory, and an LD_PRELOAD module which can fake arbitrary libvirt XML from an external file (and is therefore a much more flexible test than using the libvirt test:// driver alone). Also added is one regression test for: https://bugzilla.redhat.com/show_bug.cgi?id=701814 Loading the given libvirt XML using Sys::Guestfs::Lib::open_guest used to fail with the error: format parameter is empty or contains disallowed characters at /home/rjones/d/libguestfs/perl/blib/lib/Sys/Guestfs/Lib.pm line 256. Thanks to Tom Horsley for supplying the test data. --- Makefile.am | 1 + configure.ac | 1 + tests/xml/Makefile.am | 49 ++++++++++++++++++++++ tests/xml/fake_libvirt_xml.c | 87 ++++++++++++++++++++++++++++++++++++++++ tests/xml/rhbz701814-faked.xml | 70 ++++++++++++++++++++++++++++++++ tests/xml/rhbz701814-node.xml | 19 +++++++++ tests/xml/rhbz701814.pl | 30 ++++++++++++++ 7 files changed, 257 insertions(+) create mode 100644 tests/xml/Makefile.am create mode 100644 tests/xml/fake_libvirt_xml.c create mode 100644 tests/xml/rhbz701814-faked.xml create mode 100644 tests/xml/rhbz701814-node.xml create mode 100755 tests/xml/rhbz701814.pl diff --git a/Makefile.am b/Makefile.am index 3ff6608..a483918 100644 --- a/Makefile.am +++ b/Makefile.am @@ -43,6 +43,7 @@ SUBDIRS += tests/luks SUBDIRS += tests/md SUBDIRS += tests/ntfsclone SUBDIRS += tests/btrfs +SUBDIRS += tests/xml SUBDIRS += tests/regressions endif diff --git a/configure.ac b/configure.ac index dc1f27a..ca1c146 100644 --- a/configure.ac +++ b/configure.ac @@ -1344,6 +1344,7 @@ AC_CONFIG_FILES([Makefile tests/protocol/Makefile tests/qemu/Makefile tests/regressions/Makefile + tests/xml/Makefile tools/Makefile]) AC_OUTPUT diff --git a/tests/xml/Makefile.am b/tests/xml/Makefile.am new file mode 100644 index 0000000..d9abd5c --- /dev/null +++ b/tests/xml/Makefile.am @@ -0,0 +1,49 @@ +# libguestfs +# Copyright (C) 2012 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +include $(top_srcdir)/subdir-rules.mk + +if HAVE_LIBVIRT + +# This LD_PRELOAD library can be used to precisely control the XML +# returned by libvirt. +check_LTLIBRARIES = libfakevirtxml.la + +libfakevirtxml_la_SOURCES = fake_libvirt_xml.c +libfakevirtxml_la_CFLAGS = $(LIBVIRT_CFLAGS) +# -version-info and -rpath force libtool to build a shared library. +libfakevirtxml_la_LDFLAGS = -version-info 0:0:0 -rpath /nowhere + +random_val := $(shell awk 'BEGIN{srand(); print 1+int(255*rand())}' < /dev/null) + +TESTS = \ + rhbz701814.pl + +TESTS_ENVIRONMENT = \ + MALLOC_PERTURB_=$(random_val) \ + abs_srcdir=$(abs_srcdir) \ + LD_PRELOAD=.libs/libfakevirtxml.so \ + $(top_builddir)/run + +endif + +EXTRA_DIST = \ + rhbz701814.pl \ + rhbz701814-faked.xml \ + rhbz701814-node.xml + +CLEANFILES = *~ diff --git a/tests/xml/fake_libvirt_xml.c b/tests/xml/fake_libvirt_xml.c new file mode 100644 index 0000000..6119241 --- /dev/null +++ b/tests/xml/fake_libvirt_xml.c @@ -0,0 +1,87 @@ +/* libguestfs + * Copyright (C) 2012 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include <config.h> + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/types.h> +#include <sys/stat.h> + +#include <libvirt/libvirt.h> + +char * +virDomainGetXMLDesc (virDomainPtr dom, unsigned int flags) +{ + const char *path; + int fd; + struct stat statbuf; + char *buf, *p; + size_t n; + ssize_t r; + + path = getenv ("FAKE_LIBVIRT_XML"); + + if (!path) { + fprintf (stderr, "environment variable FAKE_LIBVIRT_XML is not set\n"); + _exit (1); + } + + fprintf (stderr, + "fake_libvirt_xml: returning fake libvirt XML from %s\n", path); + + fd = open (path, O_RDONLY | O_CLOEXEC); + if (fd == -1) { + perror (path); + _exit (1); + } + + if (fstat (fd, &statbuf) == -1) { + perror ("fstat"); + _exit (1); + } + + buf = malloc (statbuf.st_size + 1); + if (buf == NULL) { + perror ("malloc"); + _exit (1); + } + + for (n = 0, p = buf; n < statbuf.st_size; ++n) { + r = read (fd, p, statbuf.st_size - n); + if (r == -1) { + perror ("read"); + _exit (1); + } + if (r == 0) + break; + n += r; + p += r; + } + + *p = '\0'; + + if (close (fd) == -1) { + perror ("close"); + _exit (1); + } + + return buf; /* caller frees */ +} diff --git a/tests/xml/rhbz701814-faked.xml b/tests/xml/rhbz701814-faked.xml new file mode 100644 index 0000000..ae31915 --- /dev/null +++ b/tests/xml/rhbz701814-faked.xml @@ -0,0 +1,70 @@ +<!-- supplied for the regression test by Tom Horsley --> +<domain type='test'> + <name>winxppro</name> + <uuid>6d626c31-643c-ca9a-d36d-3c1612e39bbd</uuid> + <memory>1048576</memory> + <currentMemory>1048576</currentMemory> + <vcpu>2</vcpu> + <os> + <type arch='x86_64' machine='pc-0.11'>hvm</type> + <boot dev='hd'/> + </os> + <features> + <acpi/> + <apic/> + <pae/> + </features> + <clock offset='localtime'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>restart</on_crash> + <devices> + <emulator>/usr/bin/qemu-spice-wrapper</emulator> + <disk type='file' device='disk'> + <driver name='qemu'/> + <source file='/dev/null'/> + <target dev='vda' bus='virtio'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> + </disk> + <disk type='file' device='cdrom'> + <source file='/dev/null'/> + <target dev='hdc' bus='ide'/> + <readonly/> + <address type='drive' controller='0' bus='1' unit='0'/> + </disk> + <disk type='file' device='disk'> + <driver name='qemu'/> + <source file='/dev/null'/> + <target dev='vdb' bus='virtio'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> + </disk> + <controller type='ide' index='0'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> + </controller> + <interface type='bridge'> + <mac address='54:52:00:62:7b:5c'/> + <source bridge='br0'/> + <model type='virtio'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> + </interface> + <serial type='pty'> + <target port='0'/> + </serial> + <console type='pty'> + <target type='serial' port='0'/> + </console> + <input type='mouse' bus='ps2'/> + <graphics type='vnc' port='-1' autoport='yes'/> + <sound model='ac97'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> + </sound> + <video> + <model type='cirrus' vram='9216' heads='1'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> + </video> + <memballoon model='virtio'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> + </memballoon> + </devices> +</domain> + diff --git a/tests/xml/rhbz701814-node.xml b/tests/xml/rhbz701814-node.xml new file mode 100644 index 0000000..5266873 --- /dev/null +++ b/tests/xml/rhbz701814-node.xml @@ -0,0 +1,19 @@ +<!-- This is dummy XML needed by the libvirt test:// driver. It will + be overridden by the fake libvirt XML preload module. --> +<node> +<domain type='test'> + <name>winxppro</name> + <memory>1048576</memory> + <os> + <type>hvm</type> + <boot dev='hd'/> + </os> + <devices> + <disk type='file' device='disk'> + <driver name='qemu'/> + <source file='/dev/null'/> + <target dev='vda' bus='virtio'/> + </disk> + </devices> +</domain> +</node> diff --git a/tests/xml/rhbz701814.pl b/tests/xml/rhbz701814.pl new file mode 100755 index 0000000..bd33692 --- /dev/null +++ b/tests/xml/rhbz701814.pl @@ -0,0 +1,30 @@ +#!/usr/bin/perl -w +# Copyright (C) 2012 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +# Regression test for: +# https://bugzilla.redhat.com/show_bug.cgi?id=701814 + +use strict; + +use Sys::Guestfs; +use Sys::Guestfs::Lib qw(open_guest); + +$ENV{FAKE_LIBVIRT_XML} = "rhbz701814-faked.xml"; +my $abs_srcdir = $ENV{abs_srcdir}; + +my $g = open_guest (["winxppro"], + address => "test://$abs_srcdir/rhbz701814-node.xml"); -- 1.7.10