[libvirt] [PATCH V2 2/2] libxl: Add a test suite for libxl_domain_config generator

The libxl library allows a libxl_domain_config object to be serialized from/to a JSON string. Use this to allow testing of the XML to libxl_domain_config conversion process. Test XML is converted to libxl_domain_config, which is then serialized to json. A json template corresponding to the test XML is converted to a libxl_domain_config object using libxl_domain_config_from_json(), and then serialized back to json using libxl_domain_config_to_json(). The two json docs are then compared. Using libxl to convert the json template to a libxl_domain_config object and then back to json provides a simple way to account for any changes or additions to the json representation across Xen releases. Signed-off-by: Jim Fehlig <jfehlig(a)suse.com&gt; --- m4/virt-driver-libxl.m4 | 4 + tests/Makefile.am | 18 ++- tests/libxlxml2domconfigdata/basic-hvm.json | 89 +++++++++++ tests/libxlxml2domconfigdata/basic-hvm.xml | 36 +++++ tests/libxlxml2domconfigdata/basic-pv.json | 65 ++++++++ tests/libxlxml2domconfigdata/basic-pv.xml | 28 ++++ tests/libxlxml2domconfigdata/moredevs-hvm.json | 111 +++++++++++++ tests/libxlxml2domconfigdata/moredevs-hvm.xml | 63 ++++++++ tests/libxlxml2domconfigtest.c | 209 +++++++++++++++++++++++++ tests/virmocklibxl.c | 106 +++++++++++++ 10 files changed, 727 insertions(+), 2 deletions(-) diff --git a/m4/virt-driver-libxl.m4 b/m4/virt-driver-libxl.m4 index 96a9d4736..e6dbfef68 100644 --- a/m4/virt-driver-libxl.m4 +++ b/m4/virt-driver-libxl.m4 @@ -80,6 +80,10 @@ AC_DEFUN([LIBVIRT_DRIVER_CHECK_LIBXL], [ LIBXL_LIBS="$LIBXL_LIBS -lxenctrl" ]) + dnl Check if libxl_domain_config_from_json is available for domXML to + dnl libxl_domain_config tests + LIBS="$LIBS -lxenlight -lxenctrl" + AC_CHECK_FUNCS([libxl_domain_config_from_json]) CFLAGS="$old_CFLAGS" LIBS="$old_LIBS" fi diff --git a/tests/Makefile.am b/tests/Makefile.am index 3e3d58071..1f8c4cd42 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -99,6 +99,7 @@ EXTRA_DIST = \ genericxml2xmlindata \ genericxml2xmloutdata \ interfaceschemadata \ + libxlxml2domconfigdata \ lxcconf2xmldata \ lxcxml2xmldata \ lxcxml2xmloutdata \ @@ -271,7 +272,8 @@ test_programs += xml2sexprtest sexpr2xmltest \ endif WITH_XEN if WITH_LIBXL -test_programs += xlconfigtest +test_programs += xlconfigtest libxlxml2domconfigtest +test_libraries += virmocklibxl.la endif WITH_LIBXL if WITH_QEMU @@ -528,8 +530,20 @@ xlconfigtest_SOURCES = \ xlconfigtest.c testutilsxen.c testutilsxen.h \ testutils.c testutils.h xlconfigtest_LDADD =$(libxl_LDADDS) + +libxlxml2domconfigtest_SOURCES = \ + libxlxml2domconfigtest.c testutilsxen.c testutilsxen.h \ + testutils.c testutils.h +libxlxml2domconfigtest_LDADD = $(libxl_LDADDS) $(LIBXML_LIBS) + +virmocklibxl_la_SOURCES = \ + virmocklibxl.c +virmocklibxl_la_CFLAGS = $(AM_CFLAGS) +virmocklibxl_la_LDFLAGS = $(MOCKLIBS_LDFLAGS) +virmocklibxl_la_LIBADD = $(MOCKLIBS_LIBS) + else ! WITH_LIBXL -EXTRA_DIST += xlconfigtest.c +EXTRA_DIST += xlconfigtest.c libxlxml2domconfigtest.c endif ! WITH_LIBXL QEMUMONITORTESTUTILS_SOURCES = \ diff --git a/tests/libxlxml2domconfigdata/basic-hvm.json b/tests/libxlxml2domconfigdata/basic-hvm.json new file mode 100644 index 000000000..e4771920e --- /dev/null +++ b/tests/libxlxml2domconfigdata/basic-hvm.json @@ -0,0 +1,89 @@ +{ + "c_info": { + "type": "hvm", + "name": "test-hvm", + "uuid": "2147d599-9cc6-c0dc-92ab-4064b5446e9b" + }, + "b_info": { + "max_vcpus": 4, + "avail_vcpus": [ + 0, + 1, + 2, + 3 + ], + "max_memkb": 1048576, + "target_memkb": 1048576, + "video_memkb": 8192, + "shadow_memkb": 12288, + "device_model_version": "qemu_xen", + "device_model": "/usr/lib/xen/bin/qemu-system-i386", + "sched_params": { + "weight": 1000 + }, + "type.hvm": { + "pae": "True", + "apic": "True", + "acpi": "True", + "vga": { + "kind": "cirrus" + }, + "vnc": { + "enable": "True", + "listen": "0.0.0.0", + "findunused": "False" + }, + "sdl": { + "enable": "False" + }, + "spice": { + + }, + "boot": "c", + "rdm": { + + } + }, + "arch_arm": { + + } + }, + "disks": [ + { + "pdev_path": "/var/lib/xen/images/test-hvm.img", + "vdev": "hda", + "backend": "qdisk", + "format": "raw", + "removable": 1, + "readwrite": 1 + } + ], + "nics": [ + { + "devid": 0, + "mac": "00:16:3e:66:12:b4", + "bridge": "br0", + "script": "/etc/xen/scripts/vif-bridge", + "nictype": "vif_ioemu" + } + ], + "vfbs": [ + { + "devid": -1, + "vnc": { + "enable": "True", + "listen": "0.0.0.0", + "findunused": "False" + }, + "sdl": { + "enable": "False" + } + } + ], + "vkbs": [ + { + "devid": -1 + } + ], + "on_reboot": "restart" +} diff --git a/tests/libxlxml2domconfigdata/basic-hvm.xml b/tests/libxlxml2domconfigdata/basic-hvm.xml new file mode 100644 index 000000000..9dedf1729 --- /dev/null +++ b/tests/libxlxml2domconfigdata/basic-hvm.xml @@ -0,0 +1,36 @@ +<domain type='xen'> + <name>test-hvm</name> + <description>None</description> + <uuid>2147d599-9cc6-c0dc-92ab-4064b5446e9b</uuid> + <memory>1048576</memory> + <currentMemory>1048576</currentMemory> + <vcpu>4</vcpu> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <clock sync='utc'/> + <os> + <type>hvm</type> + <loader>/usr/lib/xen/boot/hvmloader</loader> + <boot dev='hd'/> + </os> + <features> + <apic/> + <acpi/> + <pae/> + </features> + <devices> + <emulator>/usr/lib/xen/bin/qemu-system-i386</emulator> + <disk type='file' device='disk'> + <driver name='qemu'/> + <source file='/var/lib/xen/images/test-hvm.img'/> + <target dev='hda'/> + </disk> + <interface type='bridge'> + <source bridge='br0'/> + <mac address='00:16:3e:66:12:b4'/> + <script path='/etc/xen/scripts/vif-bridge'/> + </interface> + <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'/> + </devices> +</domain> diff --git a/tests/libxlxml2domconfigdata/basic-pv.json b/tests/libxlxml2domconfigdata/basic-pv.json new file mode 100644 index 000000000..7e1abd3d6 --- /dev/null +++ b/tests/libxlxml2domconfigdata/basic-pv.json @@ -0,0 +1,65 @@ +{ + "c_info": { + "type": "pv", + "name": "test-pv", + "uuid": "039e9ee6-4a84-3055-4c81-8ba426ae2656" + }, + "b_info": { + "max_vcpus": 4, + "avail_vcpus": [ + 0, + 1, + 2, + 3 + ], + "max_memkb": 524288, + "target_memkb": 524288, + "sched_params": { + "weight": 1000 + }, + "type.pv": { + "bootloader": "pygrub" + }, + "arch_arm": { + + } + }, + "disks": [ + { + "pdev_path": "/var/lib/xen/images/test-pv.img", + "vdev": "xvda", + "backend": "qdisk", + "format": "raw", + "removable": 1, + "readwrite": 1 + } + ], + "nics": [ + { + "devid": 0, + "mac": "00:16:3e:3e:86:60", + "bridge": "br0", + "script": "/etc/xen/scripts/vif-bridge", + "nictype": "vif" + } + ], + "vfbs": [ + { + "devid": -1, + "vnc": { + "enable": "True", + "listen": "0.0.0.0", + "findunused": "False" + }, + "sdl": { + "enable": "False" + } + } + ], + "vkbs": [ + { + "devid": -1 + } + ], + "on_reboot": "restart" +} diff --git a/tests/libxlxml2domconfigdata/basic-pv.xml b/tests/libxlxml2domconfigdata/basic-pv.xml new file mode 100644 index 000000000..eba3cc66a --- /dev/null +++ b/tests/libxlxml2domconfigdata/basic-pv.xml @@ -0,0 +1,28 @@ +<domain type='xen'> + <name>test-pv</name> + <uuid>039e9ee6-4a84-3055-4c81-8ba426ae2656</uuid> + <memory>524288</memory> + <currentMemory>524288</currentMemory> + <vcpu>4</vcpu> + <bootloader>pygrub</bootloader> + <os> + <type arch='x86_64' machine='xenpv'>linux</type> + </os> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <disk type='file' device='disk'> + <driver name='qemu'/> + <source file='/var/lib/xen/images/test-pv.img'/> + <target dev='xvda'/> + </disk> + <interface type='bridge'> + <source bridge='br0'/> + <mac address='00:16:3e:3e:86:60'/> + <script path='/etc/xen/scripts/vif-bridge'/> + </interface> + <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'/> + </devices> +</domain> diff --git a/tests/libxlxml2domconfigdata/moredevs-hvm.json b/tests/libxlxml2domconfigdata/moredevs-hvm.json new file mode 100644 index 000000000..70840d2b3 --- /dev/null +++ b/tests/libxlxml2domconfigdata/moredevs-hvm.json @@ -0,0 +1,111 @@ +{ + "c_info": { + "type": "hvm", + "hap": "True", + "name": "test-hvm", + "uuid": "2147d599-9cc6-c0dc-92ab-4064b5446e9b" + }, + "b_info": { + "max_vcpus": 4, + "avail_vcpus": [ + 0, + 1, + 2, + 3 + ], + "tsc_mode": "native", + "max_memkb": 1048576, + "target_memkb": 1048576, + "video_memkb": 8192, + "shadow_memkb": 12288, + "device_model_version": "qemu_xen", + "device_model": "/usr/lib/xen/bin/qemu-system-i386", + "sched_params": { + "weight": 1000 + }, + "type.hvm": { + "pae": "True", + "apic": "True", + "acpi": "True", + "hpet": "True", + "vga": { + "kind": "cirrus" + }, + "vnc": { + "enable": "True", + "findunused": "False" + }, + "sdl": { + "enable": "False" + }, + "spice": { + + }, + "serial": "pty", + "boot": "c", + "usbdevice_list": [ + "mouse", + "tablet" + ], + "rdm": { + + } + }, + "arch_arm": { + + } + }, + "disks": [ + { + "pdev_path": "/var/lib/xen/images/test-hvm.img", + "vdev": "hda", + "backend": "qdisk", + "format": "raw", + "removable": 1, + "readwrite": 1 + }, + { + "pdev_path": "/root/boot.iso", + "vdev": "hdb", + "backend": "qdisk", + "format": "raw", + "removable": 1, + "is_cdrom": 1 + } + ], + "nics": [ + { + "devid": 0, + "model": "netfront", + "mac": "00:16:3e:7a:35:ce", + "bridge": "br0", + "script": "/etc/xen/scripts/vif-bridge", + "nictype": "vif" + } + ], + "pcidevs": [ + { + "dev": 16, + "bus": 10, + "rdm_policy": "invalid" + } + ], + "vfbs": [ + { + "devid": -1, + "vnc": { + "enable": "True", + "findunused": "False" + }, + "sdl": { + "enable": "False" + } + } + ], + "vkbs": [ + { + "devid": -1 + } + ], + "on_reboot": "restart" +} diff --git a/tests/libxlxml2domconfigdata/moredevs-hvm.xml b/tests/libxlxml2domconfigdata/moredevs-hvm.xml new file mode 100644 index 000000000..e93e153c5 --- /dev/null +++ b/tests/libxlxml2domconfigdata/moredevs-hvm.xml @@ -0,0 +1,63 @@ +<domain type='xen'> + <name>test-hvm</name> + <description>None</description> + <uuid>2147d599-9cc6-c0dc-92ab-4064b5446e9b</uuid> + <memory>1048576</memory> + <currentMemory>1048576</currentMemory> + <vcpu>4</vcpu> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <clock offset='variable' adjustment='0' basis='utc'> + <timer name='tsc' present='yes' mode='native'/> + <timer name='hpet' present='yes'/> + </clock> + <os> + <type>hvm</type> + <loader>/usr/lib/xen/boot/hvmloader</loader> + <boot dev='hd'/> + </os> + <features> + <apic/> + <acpi/> + <pae/> + <hap/> + </features> + <devices> + <emulator>/usr/lib/xen/bin/qemu-system-i386</emulator> + <disk type='file' device='disk'> + <driver name='qemu' type='raw' cache='default'/> + <source file='/var/lib/xen/images/test-hvm.img'/> + <target dev='hda'/> + </disk> + <disk type='file' device='cdrom'> + <driver name='qemu' type='raw' cache='default'/> + <source file='/root/boot.iso'/> + <target dev='hdb'/> + </disk> + <interface type='bridge'> + <source bridge='br0'/> + <mac address='00:16:3e:7a:35:ce'/> + <script path='/etc/xen/scripts/vif-bridge'/> + <model type='netfront'/> + </interface> + <interface type='hostdev' managed='yes'> + <mac address='00:16:3e:2e:e7:fc'/> + <driver name='xen'/> + <source> + <address type='pci' domain='0x0000' bus='0x0a' slot='0x10' function='0x0'/> + </source> + </interface> + <graphics type='vnc'/> + <video> + <model type='cirrus' vram='8192' heads='1' primary='yes'/> + </video> + <console type='pty'> + <target port='0'/> + </console> + <input type='mouse' bus='usb'/> + <input type='tablet' bus='usb'/> + <input type='mouse' bus='ps2'/> + <input type='keyboard' bus='ps2'/> + </devices> +</domain> diff --git a/tests/libxlxml2domconfigtest.c b/tests/libxlxml2domconfigtest.c new file mode 100644 index 000000000..3db4a800e --- /dev/null +++ b/tests/libxlxml2domconfigtest.c @@ -0,0 +1,209 @@ +/* + * libxlxml2domconfigtest.c: test conversion of domXML to + * libxl_domain_config structure. + * + * Copyright (C) 2017 SUSE LINUX Products GmbH, Nuernberg, Germany. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library. If not, see + * <http://www.gnu.org/licenses/>;. + * + * Author: Jim Fehlig <jfehlig(a)suse.com&gt; + */ + +#include <config.h> + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> + +#include <sys/types.h> +#include <fcntl.h> + +#include "testutils.h" + +#if defined(WITH_LIBXL) && defined(WITH_YAJL) && defined(HAVE_LIBXL_DOMAIN_CONFIG_FROM_JSON) + +# include "internal.h" +# include "viralloc.h" +# include "libxl/libxl_conf.h" +# include "datatypes.h" +# include "virstring.h" +# include "virmock.h" +# include "virjson.h" +# include "testutilsxen.h" + +# define VIR_FROM_THIS VIR_FROM_LIBXL + +static const char *abs_top_srcdir; +static virCapsPtr caps; + +static int testCompareXMLToDomConfig(const char *xmlfile, + const char *jsonfile) +{ + int ret = -1; + libxl_domain_config actualconfig; + libxl_domain_config expectconfig; + xentoollog_logger *log = NULL; + libxl_ctx *ctx = NULL; + virPortAllocatorPtr gports = NULL; + virDomainXMLOptionPtr xmlopt = NULL; + virDomainDefPtr vmdef = NULL; + char *actualjson = NULL; + char *tempjson = NULL; + char *expectjson = NULL; + + libxl_domain_config_init(&actualconfig); + libxl_domain_config_init(&expectconfig); + + if (!(log = (xentoollog_logger *)xtl_createlogger_stdiostream(stderr, XTL_DEBUG, 0))) + goto cleanup; + + if (libxl_ctx_alloc(&ctx, LIBXL_VERSION, 0, log) < 0) + goto cleanup; + + if (!(gports = virPortAllocatorNew("vnc", 5900, 6000, + VIR_PORT_ALLOCATOR_SKIP_BIND_CHECK))) + goto cleanup; + + if (!(xmlopt = libxlCreateXMLConf())) + goto cleanup; + + if (!(vmdef = virDomainDefParseFile(xmlfile, caps, xmlopt, + NULL, VIR_DOMAIN_XML_INACTIVE))) + goto cleanup; + + if (libxlBuildDomainConfig(gports, vmdef, NULL, ctx, caps, &actualconfig) < 0) + goto cleanup; + + if (!(actualjson = libxl_domain_config_to_json(ctx, &actualconfig))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + "Failed to retrieve JSON doc for libxl_domain_config"); + goto cleanup; + } + printf("\nlibvirt converted json:\n%s\n", actualjson); + + virTestLoadFile(jsonfile, &tempjson); + if (libxl_domain_config_from_json(ctx, &expectconfig, tempjson) != 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + "Failed to create libxl_domain_config from JSON doc"); + goto cleanup; + } + if (!(expectjson = libxl_domain_config_to_json(ctx, &expectconfig))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + "Failed to retrieve JSON doc for libxl_domain_config"); + goto cleanup; + } + printf("\nlibxl converted json:\n%s\n", expectjson); + + if (strcmp(expectjson, actualjson)) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + "Expected and actual libxl_domain_config objects do not compare"); + goto cleanup; + } + + ret = 0; + + cleanup: + VIR_FREE(expectjson); + VIR_FREE(actualjson); + VIR_FREE(tempjson); + virDomainDefFree(vmdef); + virObjectUnref(gports); + virObjectUnref(xmlopt); + libxl_ctx_free(ctx); + libxl_domain_config_dispose(&actualconfig); + libxl_domain_config_dispose(&expectconfig); + xtl_logger_destroy(log); + return ret; +} + + +struct testInfo { + const char *name; +}; + + +static int +testCompareXMLToDomConfigHelper(const void *data) +{ + int ret = -1; + const struct testInfo *info = data; + char *xmlfile = NULL; + char *jsonfile = NULL; + + if (virAsprintf(&xmlfile, "%s/libxlxml2domconfigdata/%s.xml", + abs_srcdir, info->name) < 0 || + virAsprintf(&jsonfile, "%s/libxlxml2domconfigdata/%s.json", + abs_srcdir, info->name) < 0) + goto cleanup; + + ret = testCompareXMLToDomConfig(xmlfile, jsonfile); + + cleanup: + VIR_FREE(xmlfile); + VIR_FREE(jsonfile); + return ret; +} + + +static int +mymain(void) +{ + int ret = 0; + + abs_top_srcdir = getenv("abs_top_srcdir"); + if (!abs_top_srcdir) + abs_top_srcdir = abs_srcdir "/.."; + + /* Set the timezone because we are mocking the time() function. + * If we don't do that, then localtime() may return unpredictable + * results. In order to detect things that just work by a blind + * chance, we need to set an virtual timezone that no libvirt + * developer resides in. */ + if (setenv("TZ", "VIR00:30", 1) < 0) { + perror("setenv"); + return EXIT_FAILURE; + } + + if ((caps = testXLInitCaps()) == NULL) + return EXIT_FAILURE; + +# define DO_TEST(name) \ + do { \ + static struct testInfo info = { \ + name, \ + }; \ + if (virTestRun("LibXL XML-2-JSON " name, \ + testCompareXMLToDomConfigHelper, &info) < 0) \ + ret = -1; \ + } while (0) + + DO_TEST("basic-pv"); + DO_TEST("basic-hvm"); + DO_TEST("moredevs-hvm"); + + return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE; +} + +VIR_TEST_MAIN_PRELOAD(mymain, abs_builddir "/.libs/virmocklibxl.so") + +#else + +int main(void) +{ + return EXIT_AM_SKIP; +} + +#endif /* WITH_LIBXL && WITH_YAJL && HAVE_LIBXL_DOMAIN_CONFIG_FROM_JSON */ diff --git a/tests/virmocklibxl.c b/tests/virmocklibxl.c new file mode 100644 index 000000000..605f41223 --- /dev/null +++ b/tests/virmocklibxl.c @@ -0,0 +1,106 @@ +/* + * virmocklibxl.c: mocking of xenstore/libxs for libxl + * + * Copyright (C) 2014 Red Hat, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library. If not, see + * <http://www.gnu.org/licenses/>;. + * + * Author: Daniel P. Berrange <berrange(a)redhat.com&gt; + */ + +#include <config.h> + +#if defined(WITH_LIBXL) && defined(WITH_YAJL) +# include "virmock.h" +# include <sys/stat.h> +# include <unistd.h> +# include <libxl.h> +# include <xenstore.h> +# include <xenctrl.h> + +# include "libxl/libxl_capabilities.h" + +VIR_MOCK_IMPL_RET_VOID(xs_daemon_open, + struct xs_handle *) +{ + VIR_MOCK_REAL_INIT(xs_daemon_open); + return (void*)0x1; +} + +VIR_MOCK_IMPL_RET_ARGS(xc_interface_open, + xc_interface *, + xentoollog_logger *, logger, + xentoollog_logger *, dombuild_logger, + unsigned, open_flags) +{ + VIR_MOCK_REAL_INIT(xc_interface_open); + return (void*)0x1; +} + + +VIR_MOCK_STUB_RET_ARGS(xc_interface_close, + int, 0, + xc_interface *, handle) + +VIR_MOCK_STUB_VOID_ARGS(xs_daemon_close, + struct xs_handle *, handle) + +VIR_MOCK_IMPL_RET_ARGS(__xstat, int, + int, ver, + const char *, path, + struct stat *, sb) +{ + VIR_MOCK_REAL_INIT(__xstat); + + if (strstr(path, "xenstored.pid")) { + memset(sb, 0, sizeof(*sb)); + return 0; + } + + return real___xstat(ver, path, sb); +} + +VIR_MOCK_IMPL_RET_ARGS(stat, int, + const char *, path, + struct stat *, sb) +{ + VIR_MOCK_REAL_INIT(stat); + + if (strstr(path, "xenstored.pid")) { + memset(sb, 0, sizeof(*sb)); + return 0; + } + + return real_stat(path, sb); +} + +/* + * The following emulator checks are implemented in + * src/libxl/libxl_capabilities.c. Mock them here to + * avoid probing any <emulator> specified in test files. + */ +int +libxlCapsGetEmulatorType(const virDomainDef *def ATTRIBUTE_UNUSED) +{ + return LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN; +} + +int +libxlCapsCheckEmulator(const virDomainDef *def ATTRIBUTE_UNUSED) +{ + return 0; +} + +#endif /* WITH_LIBXL && WITH_YAJL */ -- 2.13.1