/**
* virDriverLoadModuleFull:
* @path: filename of module to load
* @regfunc: name of the function that registers the module
* @handle: Returns handle of the loaded library if not NULL
*
* Loads a loadable module named @path and calls the
* registration function @regfunc. If @handle is not NULL the handle is returned
* in the variable. Otherwise the handle is leaked so that the module stays
* loaded forever.
*
* The module is automatically looked up in the appropriate place (git or
* installed directory).
*
* Returns 0 on success, 1 if the module was not found and -1 on any error.
*/
int
virDriverLoadModuleFull(const char *path,
const char *regfunc,
void **handle)
{
void *rethandle = NULL;
int (*regsym)(void);
int ret = -1;
if (!(rethandle = virDriverLoadModuleFile(path))) {
ret = 1;
goto cleanup;
}
if (!(regsym = virDriverLoadModuleFunc(rethandle, regfunc)))
goto cleanup;
if ((*regsym)() < 0) {
VIR_ERROR(_("Failed module registration %s"), regfunc);
goto cleanup;
}
if (handle)
VIR_STEAL_PTR(*handle, rethandle);
else
rethandle = NULL;
ret = 0;
cleanup:
if (rethandle)
dlclose(rethandle);
return ret;
}
static qemuBlockJobDataPtr
qemuBlockJobDataNew(qemuBlockJobType type,
const char *name)
{
qemuBlockJobDataPtr job = NULL;
qemuBlockJobDataPtr ret = NULL;
if (qemuBlockJobDataInitialize() < 0)
return NULL;
if (!(job = virObjectNew(qemuBlockJobDataClass)))
return NULL;
if (VIR_STRDUP(job->name, name) < 0)
goto cleanup;
job->state = QEMU_BLOCKJOB_STATE_NEW;
job->newstate = -1;
job->type = type;
VIR_STEAL_PTR(ret, job);
cleanup:
virObjectUnref(job);
return ret;
}
/**
* qemuBlockJobUpdate:
* @driver: qemu driver
* @vm: domain
* @disk: domain disk
* @error: error (output parameter)
*
* Update disk's mirror state in response to a block job event stored in
* blockJobStatus by qemuProcessHandleBlockJob event handler.
*
* Returns the block job event processed or -1 if there was no pending event.
*/
int
qemuBlockJobUpdate(virQEMUDriverPtr driver,
virDomainObjPtr vm,
qemuDomainAsyncJob asyncJob,
virDomainDiskDefPtr disk,
char **error)
{
qemuDomainDiskPrivatePtr diskPriv = QEMU_DOMAIN_DISK_PRIVATE(disk);
int status = diskPriv->blockJobStatus;
if (error)
*error = NULL;
if (status != -1) {
qemuBlockJobEventProcess(driver, vm, disk, asyncJob,
diskPriv->blockJobType,
diskPriv->blockJobStatus);
diskPriv->blockJobStatus = -1;
if (error)
VIR_STEAL_PTR(*error, diskPriv->blockJobError);
else
VIR_FREE(diskPriv->blockJobError);
}
return status;
}
int
virDomainCapsCPUModelsAddSteal(virDomainCapsCPUModelsPtr cpuModels,
char **name,
virDomainCapsCPUUsable usable,
char ***blockers)
{
if (VIR_RESIZE_N(cpuModels->models, cpuModels->nmodels_max,
cpuModels->nmodels, 1) < 0)
return -1;
cpuModels->models[cpuModels->nmodels].usable = usable;
VIR_STEAL_PTR(cpuModels->models[cpuModels->nmodels].name, *name);
if (blockers)
VIR_STEAL_PTR(cpuModels->models[cpuModels->nmodels].blockers, *blockers);
cpuModels->nmodels++;
return 0;
}
/**
* virCPUDefStealModel:
*
* Move CPU model related parts virCPUDef from @src to @dst. If @keepVendor
* is true, the function keeps the original vendor/vendor_id in @dst rather
* than overwriting it with the values from @src.
*/
void
virCPUDefStealModel(virCPUDefPtr dst,
virCPUDefPtr src,
bool keepVendor)
{
char *vendor = NULL;
char *vendor_id = NULL;
if (keepVendor) {
VIR_STEAL_PTR(vendor, dst->vendor);
VIR_STEAL_PTR(vendor_id, dst->vendor_id);
}
virCPUDefFreeModel(dst);
VIR_STEAL_PTR(dst->model, src->model);
VIR_STEAL_PTR(dst->features, src->features);
dst->microcodeVersion = src->microcodeVersion;
dst->nfeatures_max = src->nfeatures_max;
src->nfeatures_max = 0;
dst->nfeatures = src->nfeatures;
src->nfeatures = 0;
if (keepVendor) {
dst->vendor = vendor;
dst->vendor_id = vendor_id;
} else {
VIR_STEAL_PTR(dst->vendor, src->vendor);
VIR_STEAL_PTR(dst->vendor_id, src->vendor_id);
}
}
static int
adminDispatchConnectGetLoggingOutputs(virNetServerPtr server ATTRIBUTE_UNUSED,
virNetServerClientPtr client ATTRIBUTE_UNUSED,
virNetMessagePtr msg ATTRIBUTE_UNUSED,
virNetMessageErrorPtr rerr,
admin_connect_get_logging_outputs_args *args,
admin_connect_get_logging_outputs_ret *ret)
{
char *outputs = NULL;
int noutputs = 0;
if ((noutputs = adminConnectGetLoggingOutputs(&outputs, args->flags) < 0)) {
virNetMessageSaveError(rerr);
return -1;
}
VIR_STEAL_PTR(ret->outputs, outputs);
ret->noutputs = noutputs;
return 0;
}
/**
* qemuCgroupEmulatorAllNodesAllow:
* @cgroup: domain cgroup pointer
* @retData: filled with structure used to roll back the operation
*
* Allows all NUMA nodes for the qemu emulator thread temporarily. This is
* necessary when hotplugging cpus since it requires memory allocated in the
* DMA region. Afterwards the operation can be reverted by
* qemuCgroupEmulatorAllNodesRestore.
*
* Returns 0 on success -1 on error
*/
int
qemuCgroupEmulatorAllNodesAllow(virCgroupPtr cgroup,
qemuCgroupEmulatorAllNodesDataPtr *retData)
{
qemuCgroupEmulatorAllNodesDataPtr data = NULL;
char *all_nodes_str = NULL;
virBitmapPtr all_nodes = NULL;
int ret = -1;
if (!virNumaIsAvailable() ||
!virCgroupHasController(cgroup, VIR_CGROUP_CONTROLLER_CPUSET))
return 0;
if (!(all_nodes = virNumaGetHostMemoryNodeset()))
goto cleanup;
if (!(all_nodes_str = virBitmapFormat(all_nodes)))
goto cleanup;
if (VIR_ALLOC(data) < 0)
goto cleanup;
if (virCgroupNewThread(cgroup, VIR_CGROUP_THREAD_EMULATOR, 0,
false, &data->emulatorCgroup) < 0)
goto cleanup;
if (virCgroupGetCpusetMems(data->emulatorCgroup, &data->emulatorMemMask) < 0 ||
virCgroupSetCpusetMems(data->emulatorCgroup, all_nodes_str) < 0)
goto cleanup;
VIR_STEAL_PTR(*retData, data);
ret = 0;
cleanup:
VIR_FREE(all_nodes_str);
virBitmapFree(all_nodes);
qemuCgroupEmulatorAllNodesDataFree(data);
return ret;
}
/*
* Parses CPU definition XML from a node pointed to by @xpath. If @xpath is
* NULL, the current node of @ctxt is used (i.e., it is a shortcut to ".").
*
* Missing <cpu> element in the XML document is not considered an error unless
* @xpath is NULL in which case the function expects it was provided with a
* valid <cpu> element already. In other words, the function returns success
* and sets @cpu to NULL if @xpath is not NULL and the node pointed to by
* @xpath is not found.
*
* Returns 0 on success, -1 on error.
*/
int
virCPUDefParseXML(xmlXPathContextPtr ctxt,
const char *xpath,
virCPUType type,
virCPUDefPtr *cpu)
{
virCPUDefPtr def = NULL;
xmlNodePtr *nodes = NULL;
xmlNodePtr oldnode = ctxt->node;
int n;
size_t i;
char *cpuMode;
char *fallback = NULL;
char *vendor_id = NULL;
int ret = -1;
*cpu = NULL;
if (xpath && !(ctxt->node = virXPathNode(xpath, ctxt))) {
ret = 0;
goto cleanup;
}
if (!virXMLNodeNameEqual(ctxt->node, "cpu")) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("XML does not contain expected 'cpu' element"));
goto cleanup;
}
if (VIR_ALLOC(def) < 0)
goto cleanup;
if (type == VIR_CPU_TYPE_AUTO) {
if (virXPathBoolean("boolean(./arch)", ctxt)) {
if (virXPathBoolean("boolean(./@match)", ctxt)) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("'arch' element cannot be used inside 'cpu'"
" element with 'match' attribute'"));
goto cleanup;
}
def->type = VIR_CPU_TYPE_HOST;
} else {
def->type = VIR_CPU_TYPE_GUEST;
}
} else {
def->type = type;
}
if ((cpuMode = virXMLPropString(ctxt->node, "mode"))) {
if (def->type == VIR_CPU_TYPE_HOST) {
VIR_FREE(cpuMode);
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Attribute mode is only allowed for guest CPU"));
goto cleanup;
} else {
def->mode = virCPUModeTypeFromString(cpuMode);
if (def->mode < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Invalid mode attribute '%s'"),
cpuMode);
VIR_FREE(cpuMode);
goto cleanup;
}
VIR_FREE(cpuMode);
}
} else {
if (def->type == VIR_CPU_TYPE_HOST)
def->mode = -1;
else
def->mode = VIR_CPU_MODE_CUSTOM;
}
if (def->type == VIR_CPU_TYPE_GUEST) {
char *match = virXMLPropString(ctxt->node, "match");
char *check;
if (!match) {
if (virXPathBoolean("boolean(./model)", ctxt))
def->match = VIR_CPU_MATCH_EXACT;
else
def->match = -1;
} else {
def->match = virCPUMatchTypeFromString(match);
VIR_FREE(match);
if (def->match < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Invalid match attribute for CPU "
"specification"));
goto cleanup;
}
}
if ((check = virXMLPropString(ctxt->node, "check"))) {
int value = virCPUCheckTypeFromString(check);
VIR_FREE(check);
if (value < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Invalid check attribute for CPU "
"specification"));
goto cleanup;
}
def->check = value;
}
}
if (def->type == VIR_CPU_TYPE_HOST) {
char *arch = virXPathString("string(./arch[1])", ctxt);
if (!arch) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("Missing CPU architecture"));
goto cleanup;
}
if ((def->arch = virArchFromString(arch)) == VIR_ARCH_NONE) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Unknown architecture %s"), arch);
VIR_FREE(arch);
goto cleanup;
}
VIR_FREE(arch);
if (virXPathBoolean("boolean(./microcode[1]/@version)", ctxt) > 0 &&
virXPathUInt("string(./microcode[1]/@version)", ctxt,
&def->microcodeVersion) < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("invalid microcode version"));
goto cleanup;
}
}
if (!(def->model = virXPathString("string(./model[1])", ctxt)) &&
def->type == VIR_CPU_TYPE_HOST) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("Missing CPU model name"));
goto cleanup;
}
if (def->type == VIR_CPU_TYPE_GUEST &&
def->mode != VIR_CPU_MODE_HOST_PASSTHROUGH) {
if ((fallback = virXPathString("string(./model[1]/@fallback)", ctxt))) {
if ((def->fallback = virCPUFallbackTypeFromString(fallback)) < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Invalid fallback attribute"));
goto cleanup;
}
}
if ((vendor_id = virXPathString("string(./model[1]/@vendor_id)",
ctxt))) {
if (strlen(vendor_id) != VIR_CPU_VENDOR_ID_LENGTH) {
virReportError(VIR_ERR_XML_ERROR,
_("vendor_id must be exactly %d characters long"),
VIR_CPU_VENDOR_ID_LENGTH);
goto cleanup;
}
/* ensure that the string can be passed to qemu*/
if (strchr(vendor_id, ',')) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("vendor id is invalid"));
goto cleanup;
}
def->vendor_id = vendor_id;
vendor_id = NULL;
}
}
def->vendor = virXPathString("string(./vendor[1])", ctxt);
if (def->vendor && !def->model) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("CPU vendor specified without CPU model"));
goto cleanup;
}
if (virXPathNode("./topology[1]", ctxt)) {
unsigned long ul;
if (virXPathULong("string(./topology[1]/@sockets)", ctxt, &ul) < 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("Missing 'sockets' attribute in CPU topology"));
goto cleanup;
}
def->sockets = (unsigned int) ul;
if (virXPathULong("string(./topology[1]/@cores)", ctxt, &ul) < 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("Missing 'cores' attribute in CPU topology"));
goto cleanup;
}
def->cores = (unsigned int) ul;
if (virXPathULong("string(./topology[1]/@threads)", ctxt, &ul) < 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("Missing 'threads' attribute in CPU topology"));
goto cleanup;
}
def->threads = (unsigned int) ul;
if (!def->sockets || !def->cores || !def->threads) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("Invalid CPU topology"));
goto cleanup;
}
}
if ((n = virXPathNodeSet("./feature", ctxt, &nodes)) < 0)
goto cleanup;
if (n > 0) {
if (!def->model && def->mode == VIR_CPU_MODE_CUSTOM) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("Non-empty feature list specified without "
"CPU model"));
goto cleanup;
}
if (VIR_RESIZE_N(def->features, def->nfeatures_max,
def->nfeatures, n) < 0)
goto cleanup;
def->nfeatures = n;
}
for (i = 0; i < n; i++) {
char *name;
int policy; /* enum virDomainCPUFeaturePolicy */
size_t j;
if (def->type == VIR_CPU_TYPE_GUEST) {
char *strpolicy;
strpolicy = virXMLPropString(nodes[i], "policy");
if (strpolicy == NULL)
policy = VIR_CPU_FEATURE_REQUIRE;
else
policy = virCPUFeaturePolicyTypeFromString(strpolicy);
VIR_FREE(strpolicy);
if (policy < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Invalid CPU feature policy"));
goto cleanup;
}
} else {
policy = -1;
}
if (!(name = virXMLPropString(nodes[i], "name")) || *name == 0) {
VIR_FREE(name);
virReportError(VIR_ERR_XML_ERROR, "%s",
_("Invalid CPU feature name"));
goto cleanup;
}
for (j = 0; j < i; j++) {
if (STREQ(name, def->features[j].name)) {
virReportError(VIR_ERR_XML_ERROR,
_("CPU feature '%s' specified more than once"),
name);
VIR_FREE(name);
goto cleanup;
}
}
def->features[i].name = name;
def->features[i].policy = policy;
}
if (virXPathInt("count(./cache)", ctxt, &n) < 0) {
goto cleanup;
} else if (n > 1) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("at most one CPU cache element may be specified"));
goto cleanup;
} else if (n == 1) {
int level = -1;
char *strmode;
int mode;
if (virXPathBoolean("boolean(./cache[1]/@level)", ctxt) == 1 &&
(virXPathInt("string(./cache[1]/@level)", ctxt, &level) < 0 ||
level < 1 || level > 3)) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("invalid CPU cache level, must be in range [1,3]"));
goto cleanup;
}
if (!(strmode = virXPathString("string(./cache[1]/@mode)", ctxt)) ||
(mode = virCPUCacheModeTypeFromString(strmode)) < 0) {
VIR_FREE(strmode);
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing or invalid CPU cache mode"));
goto cleanup;
}
VIR_FREE(strmode);
if (VIR_ALLOC(def->cache) < 0)
goto cleanup;
def->cache->level = level;
def->cache->mode = mode;
}
VIR_STEAL_PTR(*cpu, def);
ret = 0;
cleanup:
ctxt->node = oldnode;
VIR_FREE(fallback);
VIR_FREE(vendor_id);
VIR_FREE(nodes);
virCPUDefFree(def);
return ret;
}
static virSecretPtr
secretDefineXML(virConnectPtr conn,
const char *xml,
unsigned int flags)
{
virSecretPtr ret = NULL;
virSecretObjPtr obj = NULL;
virSecretDefPtr objDef;
virSecretDefPtr backup = NULL;
virSecretDefPtr def;
virObjectEventPtr event = NULL;
virCheckFlags(0, NULL);
if (!(def = virSecretDefParseString(xml)))
return NULL;
if (virSecretDefineXMLEnsureACL(conn, def) < 0)
goto cleanup;
if (!(obj = virSecretObjListAdd(driver->secrets, def,
driver->configDir, &backup)))
goto cleanup;
VIR_STEAL_PTR(objDef, def);
if (!objDef->isephemeral) {
if (backup && backup->isephemeral) {
if (virSecretObjSaveData(obj) < 0)
goto restore_backup;
}
if (virSecretObjSaveConfig(obj) < 0) {
if (backup && backup->isephemeral) {
/* Undo the virSecretObjSaveData() above; ignore errors */
virSecretObjDeleteData(obj);
}
goto restore_backup;
}
} else if (backup && !backup->isephemeral) {
if (virSecretObjDeleteConfig(obj) < 0)
goto restore_backup;
virSecretObjDeleteData(obj);
}
/* Saved successfully - drop old values */
virSecretDefFree(backup);
event = virSecretEventLifecycleNew(objDef->uuid,
objDef->usage_type,
objDef->usage_id,
VIR_SECRET_EVENT_DEFINED,
0);
ret = virGetSecret(conn,
objDef->uuid,
objDef->usage_type,
objDef->usage_id);
goto cleanup;
restore_backup:
/* If we have a backup, then secret was defined before, so just restore
* the backup; otherwise, this is a new secret, thus remove it. */
if (backup) {
virSecretObjSetDef(obj, backup);
VIR_STEAL_PTR(def, objDef);
} else {
virSecretObjListRemove(driver->secrets, obj);
virObjectUnref(obj);
obj = NULL;
}
cleanup:
virSecretDefFree(def);
virSecretObjEndAPI(&obj);
if (event)
virObjectEventStateQueue(driver->secretEventState, event);
return ret;
}