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libvirt/tests/qemuhotplugtest.c
Laine Stump 9b0848d523 qemu: propagate virQEMUDriver object to qemuDomainDeviceCalculatePCIConnectFlags 
If libvirtd is running unprivileged, it can open a device's PCI config
data in sysfs, but can only read the first 64 bytes. But as part of
determining whether a device is Express or legacy PCI,
qemuDomainDeviceCalculatePCIConnectFlags() will be updated in a future
patch to call virPCIDeviceIsPCIExpress(), which tries to read beyond
the first 64 bytes of the PCI config data and fails with an error log
if the read is unsuccessful.

In order to avoid creating a parallel "quiet" version of
virPCIDeviceIsPCIExpress(), this patch passes a virQEMUDriverPtr down
through all the call chains that initialize the
qemuDomainFillDevicePCIConnectFlagsIterData, and saves the driver
pointer with the rest of the iterdata so that it can be used by
qemuDomainDeviceCalculatePCIConnectFlags(). This pointer isn't used
yet, but will be used in an upcoming patch (that detects Express vs
legacy PCI for VFIO assigned devices) to examine driver->privileged.
2016-11-30 15:28:07 -05:00

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/*
* Copyright (C) 2011-2013 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/>.
*
*/
#include <config.h>
#include "qemu/qemu_alias.h"
#include "qemu/qemu_conf.h"
#include "qemu/qemu_hotplug.h"
#include "qemu/qemu_hotplugpriv.h"
#include "qemumonitortestutils.h"
#include "testutils.h"
#include "testutilsqemu.h"
#include "virerror.h"
#include "virstring.h"
#include "virthread.h"
#include "virfile.h"
#define VIR_FROM_THIS VIR_FROM_NONE
static virQEMUDriver driver;
enum {
ATTACH,
DETACH,
UPDATE
};
#define QEMU_HOTPLUG_TEST_DOMAIN_ID 7
struct qemuHotplugTestData {
const char *domain_filename;
const char *device_filename;
bool fail;
const char *const *mon;
int action;
bool keep;
virDomainObjPtr vm;
bool deviceDeletedEvent;
};
static int
qemuHotplugCreateObjects(virDomainXMLOptionPtr xmlopt,
virDomainObjPtr *vm,
const char *domxml,
bool event, const char *testname)
{
int ret = -1;
qemuDomainObjPrivatePtr priv = NULL;
if (!(*vm = virDomainObjNew(xmlopt)))
goto cleanup;
priv = (*vm)->privateData;
if (!(priv->qemuCaps = virQEMUCapsNew()))
goto cleanup;
virQEMUCapsSet(priv->qemuCaps, QEMU_CAPS_VIRTIO_SCSI);
virQEMUCapsSet(priv->qemuCaps, QEMU_CAPS_DEVICE_USB_STORAGE);
virQEMUCapsSet(priv->qemuCaps, QEMU_CAPS_VIRTIO_CCW);
virQEMUCapsSet(priv->qemuCaps, QEMU_CAPS_DEVICE_IVSHMEM_PLAIN);
virQEMUCapsSet(priv->qemuCaps, QEMU_CAPS_DEVICE_IVSHMEM_DOORBELL);
if (event)
virQEMUCapsSet(priv->qemuCaps, QEMU_CAPS_DEVICE_DEL_EVENT);
if (qemuTestCapsCacheInsert(driver.qemuCapsCache, testname,
priv->qemuCaps) < 0)
goto cleanup;
if (!((*vm)->def = virDomainDefParseString(domxml,
driver.caps,
driver.xmlopt,
NULL,
VIR_DOMAIN_DEF_PARSE_INACTIVE)))
goto cleanup;
if (qemuDomainAssignAddresses((*vm)->def, priv->qemuCaps,
&driver, *vm, true) < 0) {
goto cleanup;
}
if (qemuAssignDeviceAliases((*vm)->def, priv->qemuCaps) < 0)
goto cleanup;
(*vm)->def->id = QEMU_HOTPLUG_TEST_DOMAIN_ID;
if (qemuDomainSetPrivatePaths(&driver, *vm) < 0)
goto cleanup;
ret = 0;
cleanup:
return ret;
}
static int
testQemuHotplugAttach(virDomainObjPtr vm,
virDomainDeviceDefPtr dev)
{
int ret = -1;
switch (dev->type) {
case VIR_DOMAIN_DEVICE_DISK:
/* conn in only used for storage pool and secrets lookup so as long
* as we don't use any of them, passing NULL should be safe
*/
ret = qemuDomainAttachDeviceDiskLive(NULL, &driver, vm, dev);
break;
case VIR_DOMAIN_DEVICE_CHR:
ret = qemuDomainAttachChrDevice(NULL, &driver, vm, dev->data.chr);
break;
case VIR_DOMAIN_DEVICE_SHMEM:
ret = qemuDomainAttachShmemDevice(&driver, vm, dev->data.shmem);
break;
default:
VIR_TEST_VERBOSE("device type '%s' cannot be attached\n",
virDomainDeviceTypeToString(dev->type));
break;
}
return ret;
}
static int
testQemuHotplugDetach(virDomainObjPtr vm,
virDomainDeviceDefPtr dev)
{
int ret = -1;
switch (dev->type) {
case VIR_DOMAIN_DEVICE_DISK:
ret = qemuDomainDetachDeviceDiskLive(&driver, vm, dev);
break;
case VIR_DOMAIN_DEVICE_CHR:
ret = qemuDomainDetachChrDevice(&driver, vm, dev->data.chr);
break;
case VIR_DOMAIN_DEVICE_SHMEM:
ret = qemuDomainDetachShmemDevice(&driver, vm, dev->data.shmem);
break;
default:
VIR_TEST_VERBOSE("device type '%s' cannot be detached\n",
virDomainDeviceTypeToString(dev->type));
break;
}
return ret;
}
static int
testQemuHotplugUpdate(virDomainObjPtr vm,
virDomainDeviceDefPtr dev)
{
int ret = -1;
/* XXX Ideally, we would call qemuDomainUpdateDeviceLive here. But that
* would require us to provide virConnectPtr and virDomainPtr (they're used
* in case of updating a disk device. So for now, we will proceed with
* breaking the function into pieces. If we ever learn how to fake those
* required object, we can replace this code then. */
switch (dev->type) {
case VIR_DOMAIN_DEVICE_GRAPHICS:
ret = qemuDomainChangeGraphics(&driver, vm, dev->data.graphics);
break;
default:
VIR_TEST_VERBOSE("device type '%s' cannot be updated\n",
virDomainDeviceTypeToString(dev->type));
break;
}
return ret;
}
static int
testQemuHotplugCheckResult(virDomainObjPtr vm,
const char *expected,
const char *expectedFile,
bool fail)
{
char *actual;
int ret;
actual = virDomainDefFormat(vm->def, driver.caps,
VIR_DOMAIN_DEF_FORMAT_SECURE);
if (!actual)
return -1;
vm->def->id = QEMU_HOTPLUG_TEST_DOMAIN_ID;
if (STREQ(expected, actual)) {
if (fail)
VIR_TEST_VERBOSE("domain XML should not match the expected result\n");
ret = 0;
} else {
if (!fail)
virTestDifferenceFull(stderr,
expected, expectedFile,
actual, NULL);
ret = -1;
}
VIR_FREE(actual);
return ret;
}
static int
testQemuHotplug(const void *data)
{
int ret = -1;
struct qemuHotplugTestData *test = (struct qemuHotplugTestData *) data;
char *domain_filename = NULL;
char *device_filename = NULL;
char *result_filename = NULL;
char *domain_xml = NULL;
char *device_xml = NULL;
char *result_xml = NULL;
const char *const *tmp;
bool fail = test->fail;
bool keep = test->keep;
unsigned int device_parse_flags = 0;
virDomainObjPtr vm = NULL;
virDomainDeviceDefPtr dev = NULL;
virCapsPtr caps = NULL;
qemuMonitorTestPtr test_mon = NULL;
qemuDomainObjPrivatePtr priv = NULL;
if (virAsprintf(&domain_filename, "%s/qemuhotplugtestdomains/qemuhotplug-%s.xml",
abs_srcdir, test->domain_filename) < 0 ||
virAsprintf(&device_filename, "%s/qemuhotplugtestdevices/qemuhotplug-%s.xml",
abs_srcdir, test->device_filename) < 0 ||
virAsprintf(&result_filename,
"%s/qemuhotplugtestdomains/qemuhotplug-%s+%s.xml",
abs_srcdir, test->domain_filename,
test->device_filename) < 0)
goto cleanup;
if (virTestLoadFile(domain_filename, &domain_xml) < 0 ||
virTestLoadFile(device_filename, &device_xml) < 0)
goto cleanup;
if (test->action == ATTACH &&
virTestLoadFile(result_filename, &result_xml) < 0)
goto cleanup;
if (!(caps = virQEMUDriverGetCapabilities(&driver, false)))
goto cleanup;
if (test->vm) {
vm = test->vm;
} else {
if (qemuHotplugCreateObjects(driver.xmlopt, &vm, domain_xml,
test->deviceDeletedEvent,
test->domain_filename) < 0)
goto cleanup;
}
if (test->action == ATTACH)
device_parse_flags = VIR_DOMAIN_DEF_PARSE_INACTIVE;
if (!(dev = virDomainDeviceDefParse(device_xml, vm->def,
caps, driver.xmlopt,
device_parse_flags)))
goto cleanup;
/* Now is the best time to feed the spoofed monitor with predefined
* replies. */
if (!(test_mon = qemuMonitorTestNew(true, driver.xmlopt, vm, &driver, NULL)))
goto cleanup;
tmp = test->mon;
while (tmp && *tmp) {
const char *command_name;
const char *response;
if (!(command_name = *tmp++) ||
!(response = *tmp++))
break;
if (qemuMonitorTestAddItem(test_mon, command_name, response) < 0)
goto cleanup;
}
priv = vm->privateData;
priv->mon = qemuMonitorTestGetMonitor(test_mon);
priv->monJSON = true;
/* XXX We need to unlock the monitor here, as
* qemuDomainObjEnterMonitorInternal (called from qemuDomainChangeGraphics)
* tries to lock it again */
virObjectUnlock(priv->mon);
switch (test->action) {
case ATTACH:
ret = testQemuHotplugAttach(vm, dev);
if (ret == 0) {
/* vm->def stolen dev->data.* so we just need to free the dev
* envelope */
VIR_FREE(dev);
}
if (ret == 0 || fail)
ret = testQemuHotplugCheckResult(vm, result_xml,
result_filename, fail);
break;
case DETACH:
ret = testQemuHotplugDetach(vm, dev);
if (ret == 0 || fail)
ret = testQemuHotplugCheckResult(vm, domain_xml,
domain_filename, fail);
break;
case UPDATE:
ret = testQemuHotplugUpdate(vm, dev);
}
cleanup:
VIR_FREE(domain_filename);
VIR_FREE(device_filename);
VIR_FREE(result_filename);
VIR_FREE(domain_xml);
VIR_FREE(device_xml);
VIR_FREE(result_xml);
/* don't dispose test monitor with VM */
if (priv)
priv->mon = NULL;
if (keep) {
test->vm = vm;
} else {
virObjectUnref(vm);
test->vm = NULL;
}
virDomainDeviceDefFree(dev);
virObjectUnref(caps);
qemuMonitorTestFree(test_mon);
return ((ret < 0 && fail) || (!ret && !fail)) ? 0 : -1;
}
static int
mymain(void)
{
int ret = 0;
struct qemuHotplugTestData data = {0};
#if !WITH_YAJL
fputs("libvirt not compiled with yajl, skipping this test\n", stderr);
return EXIT_AM_SKIP;
#endif
if (virThreadInitialize() < 0 ||
qemuTestDriverInit(&driver) < 0)
return EXIT_FAILURE;
virEventRegisterDefaultImpl();
VIR_FREE(driver.config->spiceListen);
VIR_FREE(driver.config->vncListen);
/* some dummy values from 'config file' */
if (VIR_STRDUP_QUIET(driver.config->spicePassword, "123456") < 0)
return EXIT_FAILURE;
if (!(driver.domainEventState = virObjectEventStateNew()))
return EXIT_FAILURE;
driver.lockManager = virLockManagerPluginNew("nop", "qemu",
driver.config->configBaseDir,
0);
if (!driver.lockManager)
return EXIT_FAILURE;
/* wait only 100ms for DEVICE_DELETED event */
qemuDomainRemoveDeviceWaitTime = 100;
#define DO_TEST(file, ACTION, dev, event, fial, kep, ...) \
do { \
const char *my_mon[] = { __VA_ARGS__, NULL}; \
const char *name = file " " #ACTION " " dev; \
data.action = ACTION; \
data.domain_filename = file; \
data.device_filename = dev; \
data.fail = fial; \
data.mon = my_mon; \
data.keep = kep; \
data.deviceDeletedEvent = event; \
if (virTestRun(name, testQemuHotplug, &data) < 0) \
ret = -1; \
} while (0)
#define DO_TEST_ATTACH(file, dev, fial, kep, ...) \
DO_TEST(file, ATTACH, dev, false, fial, kep, __VA_ARGS__)
#define DO_TEST_DETACH(file, dev, fial, kep, ...) \
DO_TEST(file, DETACH, dev, false, fial, kep, __VA_ARGS__)
#define DO_TEST_ATTACH_EVENT(file, dev, fial, kep, ...) \
DO_TEST(file, ATTACH, dev, true, fial, kep, __VA_ARGS__)
#define DO_TEST_DETACH_EVENT(file, dev, fial, kep, ...) \
DO_TEST(file, DETACH, dev, true, fial, kep, __VA_ARGS__)
#define DO_TEST_UPDATE(file, dev, fial, kep, ...) \
DO_TEST(file, UPDATE, dev, false, fial, kep, __VA_ARGS__)
#define QMP_OK "{\"return\": {}}"
#define HMP(msg) "{\"return\": \"" msg "\"}"
#define QMP_DEVICE_DELETED(dev) \
"{" \
" \"timestamp\": {" \
" \"seconds\": 1374137171," \
" \"microseconds\": 2659" \
" }," \
" \"event\": \"DEVICE_DELETED\"," \
" \"data\": {" \
" \"device\": \"" dev "\"," \
" \"path\": \"/machine/peripheral/" dev "\"" \
" }" \
"}\r\n"
DO_TEST_UPDATE("graphics-spice", "graphics-spice-nochange", false, false, NULL);
DO_TEST_UPDATE("graphics-spice-timeout", "graphics-spice-timeout-nochange", false, false,
"set_password", QMP_OK, "expire_password", QMP_OK);
DO_TEST_UPDATE("graphics-spice-timeout", "graphics-spice-timeout-password", false, false,
"set_password", QMP_OK, "expire_password", QMP_OK);
DO_TEST_UPDATE("graphics-spice", "graphics-spice-listen", true, false, NULL);
DO_TEST_UPDATE("graphics-spice-listen-network", "graphics-spice-listen-network-password", false, false,
"set_password", QMP_OK, "expire_password", QMP_OK);
/* Strange huh? Currently, only graphics can be updated :-P */
DO_TEST_UPDATE("disk-cdrom", "disk-cdrom-nochange", true, false, NULL);
DO_TEST_ATTACH("console-compat-2-live", "console-virtio", false, true,
"chardev-add", "{\"return\": {\"pty\": \"/dev/pts/26\"}}",
"device_add", QMP_OK);
DO_TEST_DETACH("console-compat-2-live", "console-virtio", false, false,
"device_del", QMP_OK,
"chardev-remove", QMP_OK);
DO_TEST_ATTACH("base-live", "disk-virtio", false, true,
"human-monitor-command", HMP("OK\\r\\n"),
"device_add", QMP_OK);
DO_TEST_DETACH("base-live", "disk-virtio", false, false,
"device_del", QMP_OK,
"human-monitor-command", HMP(""));
DO_TEST_ATTACH_EVENT("base-live", "disk-virtio", false, true,
"human-monitor-command", HMP("OK\\r\\n"),
"device_add", QMP_OK);
DO_TEST_DETACH("base-live", "disk-virtio", true, true,
"device_del", QMP_OK,
"human-monitor-command", HMP(""));
DO_TEST_DETACH("base-live", "disk-virtio", false, false,
"device_del", QMP_DEVICE_DELETED("virtio-disk4") QMP_OK,
"human-monitor-command", HMP(""));
DO_TEST_ATTACH("base-live", "disk-usb", false, true,
"human-monitor-command", HMP("OK\\r\\n"),
"device_add", QMP_OK);
DO_TEST_DETACH("base-live", "disk-usb", false, false,
"device_del", QMP_OK,
"human-monitor-command", HMP(""));
DO_TEST_ATTACH_EVENT("base-live", "disk-usb", false, true,
"human-monitor-command", HMP("OK\\r\\n"),
"device_add", QMP_OK);
DO_TEST_DETACH("base-live", "disk-usb", true, true,
"device_del", QMP_OK,
"human-monitor-command", HMP(""));
DO_TEST_DETACH("base-live", "disk-usb", false, false,
"device_del", QMP_DEVICE_DELETED("usb-disk16") QMP_OK,
"human-monitor-command", HMP(""));
DO_TEST_ATTACH("base-live", "disk-scsi", false, true,
"human-monitor-command", HMP("OK\\r\\n"),
"device_add", QMP_OK);
DO_TEST_DETACH("base-live", "disk-scsi", false, false,
"device_del", QMP_OK,
"human-monitor-command", HMP(""));
DO_TEST_ATTACH_EVENT("base-live", "disk-scsi", false, true,
"human-monitor-command", HMP("OK\\r\\n"),
"device_add", QMP_OK);
DO_TEST_DETACH("base-live", "disk-scsi", true, true,
"device_del", QMP_OK,
"human-monitor-command", HMP(""));
DO_TEST_DETACH("base-live", "disk-scsi", false, false,
"device_del", QMP_DEVICE_DELETED("scsi0-0-0-5") QMP_OK,
"human-monitor-command", HMP(""));
DO_TEST_ATTACH("base-without-scsi-controller-live", "disk-scsi-2", false, true,
/* Four controllers added */
"device_add", QMP_OK,
"device_add", QMP_OK,
"device_add", QMP_OK,
"device_add", QMP_OK,
"human-monitor-command", HMP("OK\\r\\n"),
/* Disk added */
"device_add", QMP_OK);
DO_TEST_DETACH("base-with-scsi-controller-live", "disk-scsi-2", false, false,
"device_del", QMP_OK,
"human-monitor-command", HMP(""));
DO_TEST_ATTACH_EVENT("base-without-scsi-controller-live", "disk-scsi-2", false, true,
/* Four controllers added */
"device_add", QMP_OK,
"device_add", QMP_OK,
"device_add", QMP_OK,
"device_add", QMP_OK,
"human-monitor-command", HMP("OK\\r\\n"),
/* Disk added */
"device_add", QMP_OK);
DO_TEST_DETACH("base-with-scsi-controller-live", "disk-scsi-2", true, true,
"device_del", QMP_OK,
"human-monitor-command", HMP(""));
DO_TEST_DETACH("base-with-scsi-controller-live", "disk-scsi-2", false, false,
"device_del", QMP_DEVICE_DELETED("scsi3-0-5-7") QMP_OK,
"human-monitor-command", HMP(""));
DO_TEST_ATTACH("base-live", "qemu-agent", false, true,
"chardev-add", QMP_OK,
"device_add", QMP_OK);
DO_TEST_DETACH("base-live", "qemu-agent-detach", false, false,
"device_del", QMP_OK,
"chardev-remove", QMP_OK);
DO_TEST_ATTACH("base-ccw-live", "ccw-virtio", false, true,
"human-monitor-command", HMP("OK\\r\\n"),
"device_add", QMP_OK);
DO_TEST_DETACH("base-ccw-live", "ccw-virtio", false, false,
"device_del", QMP_OK,
"human-monitor-command", HMP(""));
DO_TEST_ATTACH("base-ccw-live-with-ccw-virtio", "ccw-virtio-2", false, true,
"human-monitor-command", HMP("OK\\r\\n"),
"device_add", QMP_OK);
DO_TEST_DETACH("base-ccw-live-with-ccw-virtio", "ccw-virtio-2", false, false,
"device_del", QMP_OK,
"human-monitor-command", HMP(""));
DO_TEST_ATTACH("base-ccw-live-with-ccw-virtio", "ccw-virtio-2-explicit", false, true,
"human-monitor-command", HMP("OK\\r\\n"),
"device_add", QMP_OK);
DO_TEST_DETACH("base-ccw-live-with-ccw-virtio", "ccw-virtio-2-explicit", false, false,
"device_del", QMP_OK,
"human-monitor-command", HMP(""));
/* Attach a second device, then detach the first one. Then attach the first one again. */
DO_TEST_ATTACH("base-ccw-live-with-ccw-virtio", "ccw-virtio-2-explicit", false, true,
"human-monitor-command", HMP("OK\\r\\n"),
"device_add", QMP_OK);
DO_TEST_DETACH("base-ccw-live-with-2-ccw-virtio", "ccw-virtio-1-explicit", false, true,
"device_del", QMP_OK,
"human-monitor-command", HMP(""));
DO_TEST_ATTACH("base-ccw-live-with-2-ccw-virtio", "ccw-virtio-1-reverse", false, false,
"human-monitor-command", HMP("OK\\r\\n"),
"device_add", QMP_OK);
DO_TEST_ATTACH("base-live", "ivshmem-plain", false, true,
"object-add", QMP_OK,
"device_add", QMP_OK);
DO_TEST_ATTACH("base-live", "ivshmem-doorbell", false, true,
"chardev-add", QMP_OK,
"device_add", QMP_OK);
DO_TEST_DETACH("base-live+ivshmem-plain", "ivshmem-doorbell-detach", false, true,
"device_del", QMP_OK,
"chardev-remove", QMP_OK);
DO_TEST_DETACH("base-live", "ivshmem-plain-detach", false, false,
"device_del", QMP_OK,
"object-del", QMP_OK);
qemuTestDriverFree(&driver);
return (ret == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
}
VIRT_TEST_MAIN(mymain)
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