static void
virCapabilitiesDispose(void *object)
{
virCapsPtr caps = object;
size_t i;
for (i = 0; i < caps->nguests; i++)
virCapabilitiesFreeGuest(caps->guests[i]);
VIR_FREE(caps->guests);
for (i = 0; i < caps->host.nfeatures; i++)
VIR_FREE(caps->host.features[i]);
VIR_FREE(caps->host.features);
virCapabilitiesFreeNUMAInfo(caps);
for (i = 0; i < caps->host.nmigrateTrans; i++)
VIR_FREE(caps->host.migrateTrans[i]);
VIR_FREE(caps->host.migrateTrans);
for (i = 0; i < caps->host.nsecModels; i++) {
virCapabilitiesClearSecModel(&caps->host.secModels[i]);
}
VIR_FREE(caps->host.secModels);
virCPUDefFree(caps->host.cpu);
}
/**
* virCapabilitiesFree:
* @caps: object to free
*
* Free all memory associated with capabilities
*/
void
virCapabilitiesFree(virCapsPtr caps) {
int i;
if (caps == NULL)
return;
for (i = 0 ; i < caps->nguests ; i++)
virCapabilitiesFreeGuest(caps->guests[i]);
VIR_FREE(caps->guests);
for (i = 0 ; i < caps->host.nfeatures ; i++)
VIR_FREE(caps->host.features[i]);
VIR_FREE(caps->host.features);
virCapabilitiesFreeNUMAInfo(caps);
for (i = 0 ; i < caps->host.nmigrateTrans ; i++)
VIR_FREE(caps->host.migrateTrans[i]);
VIR_FREE(caps->host.migrateTrans);
VIR_FREE(caps->host.arch);
VIR_FREE(caps->host.secModel.model);
VIR_FREE(caps->host.secModel.doi);
virCPUDefFree(caps->host.cpu);
VIR_FREE(caps);
}
virCapsPtr umlCapsInit(void) {
struct utsname utsname;
virCapsPtr caps;
virCapsGuestPtr guest;
/* Really, this never fails - look at the man-page. */
uname (&utsname);
if ((caps = virCapabilitiesNew(utsname.machine,
0, 0)) == NULL)
goto error;
/* Some machines have problematic NUMA toplogy causing
* unexpected failures. We don't want to break the QEMU
* driver in this scenario, so log errors & carry on
*/
if (nodeCapsInitNUMA(caps) < 0) {
virCapabilitiesFreeNUMAInfo(caps);
VIR_WARN("Failed to query host NUMA topology, disabling NUMA capabilities");
}
if (virGetHostUUID(caps->host.host_uuid)) {
umlReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("cannot get the host uuid"));
goto error;
}
if ((guest = virCapabilitiesAddGuest(caps,
"uml",
utsname.machine,
STREQ(utsname.machine, "x86_64") ? 64 : 32,
NULL,
NULL,
0,
NULL)) == NULL)
goto error;
if (virCapabilitiesAddGuestDomain(guest,
"uml",
NULL,
NULL,
0,
NULL) == NULL)
goto error;
caps->defaultConsoleTargetType = VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_UML;
return caps;
error:
virCapabilitiesFree(caps);
return NULL;
}
virCapsPtr umlCapsInit(void)
{
virCapsPtr caps;
virCapsGuestPtr guest;
if ((caps = virCapabilitiesNew(virArchFromHost(),
false, false)) == NULL)
goto error;
/* Some machines have problematic NUMA toplogy causing
* unexpected failures. We don't want to break the QEMU
* driver in this scenario, so log errors & carry on
*/
if (virCapabilitiesInitNUMA(caps) < 0) {
virCapabilitiesFreeNUMAInfo(caps);
VIR_WARN("Failed to query host NUMA topology, disabling NUMA capabilities");
}
if (virCapabilitiesInitCaches(caps) < 0)
VIR_WARN("Failed to get host CPU cache info");
if (virNodeSuspendGetTargetMask(&caps->host.powerMgmt) < 0)
VIR_WARN("Failed to get host power management capabilities");
if (virGetHostUUID(caps->host.host_uuid)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("cannot get the host uuid"));
goto error;
}
if ((guest = virCapabilitiesAddGuest(caps,
VIR_DOMAIN_OSTYPE_UML,
caps->host.arch,
NULL,
NULL,
0,
NULL)) == NULL)
goto error;
if (virCapabilitiesAddGuestDomain(guest,
VIR_DOMAIN_VIRT_UML,
NULL,
NULL,
0,
NULL) == NULL)
goto error;
return caps;
error:
virObjectUnref(caps);
return NULL;
}
static int
libxlCapsInitNuma(libxl_ctx *ctx, virCapsPtr caps)
{
libxl_numainfo *numa_info = NULL;
libxl_cputopology *cpu_topo = NULL;
int nr_nodes = 0, nr_cpus = 0;
virCapsHostNUMACellCPUPtr *cpus = NULL;
int *nr_cpus_node = NULL;
size_t i;
int ret = -1;
/* Let's try to fetch all the topology information */
numa_info = libxl_get_numainfo(ctx, &nr_nodes);
if (numa_info == NULL || nr_nodes == 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("libxl_get_numainfo failed"));
goto cleanup;
} else {
cpu_topo = libxl_get_cpu_topology(ctx, &nr_cpus);
if (cpu_topo == NULL || nr_cpus == 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("libxl_get_cpu_topology failed"));
goto cleanup;
}
}
if (VIR_ALLOC_N(cpus, nr_nodes) < 0)
goto cleanup;
if (VIR_ALLOC_N(nr_cpus_node, nr_nodes) < 0)
goto cleanup;
/* For each node, prepare a list of CPUs belonging to that node */
for (i = 0; i < nr_cpus; i++) {
int node = cpu_topo[i].node;
if (cpu_topo[i].core == LIBXL_CPUTOPOLOGY_INVALID_ENTRY)
continue;
nr_cpus_node[node]++;
if (nr_cpus_node[node] == 1) {
if (VIR_ALLOC(cpus[node]) < 0)
goto cleanup;
} else {
if (VIR_REALLOC_N(cpus[node], nr_cpus_node[node]) < 0)
goto cleanup;
}
/* Mapping between what libxl tells and what libvirt wants */
cpus[node][nr_cpus_node[node]-1].id = i;
cpus[node][nr_cpus_node[node]-1].socket_id = cpu_topo[i].socket;
cpus[node][nr_cpus_node[node]-1].core_id = cpu_topo[i].core;
/* Allocate the siblings maps. We will be filling them later */
cpus[node][nr_cpus_node[node]-1].siblings = virBitmapNew(nr_cpus);
if (!cpus[node][nr_cpus_node[node]-1].siblings) {
virReportOOMError();
goto cleanup;
}
}
/* Let's now populate the siblings bitmaps */
for (i = 0; i < nr_cpus; i++) {
int node = cpu_topo[i].node;
size_t j;
if (cpu_topo[i].core == LIBXL_CPUTOPOLOGY_INVALID_ENTRY)
continue;
for (j = 0; j < nr_cpus_node[node]; j++) {
if (cpus[node][j].socket_id == cpu_topo[i].socket &&
cpus[node][j].core_id == cpu_topo[i].core)
ignore_value(virBitmapSetBit(cpus[node][j].siblings, i));
}
}
for (i = 0; i < nr_nodes; i++) {
if (numa_info[i].size == LIBXL_NUMAINFO_INVALID_ENTRY)
continue;
if (virCapabilitiesAddHostNUMACell(caps, i, nr_cpus_node[i],
numa_info[i].size / 1024,
cpus[i]) < 0) {
virCapabilitiesClearHostNUMACellCPUTopology(cpus[i],
nr_cpus_node[i]);
goto cleanup;
}
/* This is safe, as the CPU list is now stored in the NUMA cell */
cpus[i] = NULL;
}
ret = 0;
cleanup:
if (ret != 0) {
for (i = 0; cpus && i < nr_nodes; i++)
VIR_FREE(cpus[i]);
virCapabilitiesFreeNUMAInfo(caps);
}
VIR_FREE(cpus);
VIR_FREE(nr_cpus_node);
libxl_cputopology_list_free(cpu_topo, nr_cpus);
libxl_numainfo_list_free(numa_info, nr_nodes);
return ret;
}
/* Functions */
virCapsPtr virLXCDriverCapsInit(virLXCDriverPtr driver)
{
virCapsPtr caps;
virCapsGuestPtr guest;
virArch altArch;
char *lxc_path = NULL;
if ((caps = virCapabilitiesNew(virArchFromHost(),
false, false)) == NULL)
goto error;
/* Some machines have problematic NUMA toplogy causing
* unexpected failures. We don't want to break the lxc
* driver in this scenario, so log errors & carry on
*/
if (nodeCapsInitNUMA(caps) < 0) {
virCapabilitiesFreeNUMAInfo(caps);
VIR_WARN("Failed to query host NUMA topology, disabling NUMA capabilities");
}
/* Only probe for power management capabilities in the driver,
* not in the emulator */
if (driver && virNodeSuspendGetTargetMask(&caps->host.powerMgmt) < 0)
VIR_WARN("Failed to get host power management capabilities");
if (virGetHostUUID(caps->host.host_uuid)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("cannot get the host uuid"));
goto error;
}
if (!(lxc_path = virFileFindResource("libvirt_lxc",
abs_topbuilddir "/src",
LIBEXECDIR)))
goto error;
if ((guest = virCapabilitiesAddGuest(caps,
VIR_DOMAIN_OSTYPE_EXE,
caps->host.arch,
lxc_path,
NULL,
0,
NULL)) == NULL)
goto error;
if (virCapabilitiesAddGuestDomain(guest,
VIR_DOMAIN_VIRT_LXC,
NULL,
NULL,
0,
NULL) == NULL)
goto error;
/* On 64-bit hosts, we can use personality() to request a 32bit process */
if ((altArch = lxcContainerGetAlt32bitArch(caps->host.arch)) != VIR_ARCH_NONE) {
if ((guest = virCapabilitiesAddGuest(caps,
VIR_DOMAIN_OSTYPE_EXE,
altArch,
lxc_path,
NULL,
0,
NULL)) == NULL)
goto error;
if (virCapabilitiesAddGuestDomain(guest,
VIR_DOMAIN_VIRT_LXC,
NULL,
NULL,
0,
NULL) == NULL)
goto error;
}
VIR_FREE(lxc_path);
if (driver) {
/* Security driver data */
const char *doi, *model, *label, *type;
doi = virSecurityManagerGetDOI(driver->securityManager);
model = virSecurityManagerGetModel(driver->securityManager);
label = virSecurityManagerGetBaseLabel(driver->securityManager,
VIR_DOMAIN_VIRT_LXC);
type = virDomainVirtTypeToString(VIR_DOMAIN_VIRT_LXC);
/* Allocate the primary security driver for LXC. */
if (VIR_ALLOC(caps->host.secModels) < 0)
goto error;
caps->host.nsecModels = 1;
if (VIR_STRDUP(caps->host.secModels[0].model, model) < 0)
goto error;
if (VIR_STRDUP(caps->host.secModels[0].doi, doi) < 0)
goto error;
if (label &&
virCapabilitiesHostSecModelAddBaseLabel(&caps->host.secModels[0],
type,
label) < 0)
goto error;
VIR_DEBUG("Initialized caps for security driver \"%s\" with "
"DOI \"%s\"", model, doi);
} else {
VIR_INFO("No driver, not initializing security driver");
}
return caps;
error:
VIR_FREE(lxc_path);
virObjectUnref(caps);
return NULL;
}
/* Functions */
virCapsPtr lxcCapsInit(virLXCDriverPtr driver)
{
virCapsPtr caps;
virCapsGuestPtr guest;
virArch altArch;
if ((caps = virCapabilitiesNew(virArchFromHost(),
0, 0)) == NULL)
goto error;
/* Some machines have problematic NUMA toplogy causing
* unexpected failures. We don't want to break the QEMU
* driver in this scenario, so log errors & carry on
*/
if (nodeCapsInitNUMA(caps) < 0) {
virCapabilitiesFreeNUMAInfo(caps);
VIR_WARN("Failed to query host NUMA topology, disabling NUMA capabilities");
}
if (virNodeSuspendGetTargetMask(&caps->host.powerMgmt) < 0)
VIR_WARN("Failed to get host power management capabilities");
if (virGetHostUUID(caps->host.host_uuid)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("cannot get the host uuid"));
goto error;
}
if ((guest = virCapabilitiesAddGuest(caps,
"exe",
caps->host.arch,
LIBEXECDIR "/libvirt_lxc",
NULL,
0,
NULL)) == NULL)
goto error;
if (virCapabilitiesAddGuestDomain(guest,
"lxc",
NULL,
NULL,
0,
NULL) == NULL)
goto error;
/* On 64-bit hosts, we can use personality() to request a 32bit process */
if ((altArch = lxcContainerGetAlt32bitArch(caps->host.arch)) != VIR_ARCH_NONE) {
if ((guest = virCapabilitiesAddGuest(caps,
"exe",
altArch,
LIBEXECDIR "/libvirt_lxc",
NULL,
0,
NULL)) == NULL)
goto error;
if (virCapabilitiesAddGuestDomain(guest,
"lxc",
NULL,
NULL,
0,
NULL) == NULL)
goto error;
}
if (driver) {
/* Security driver data */
const char *doi, *model;
doi = virSecurityManagerGetDOI(driver->securityManager);
model = virSecurityManagerGetModel(driver->securityManager);
if (STRNEQ(model, "none")) {
/* Allocate just the primary security driver for LXC. */
if (VIR_ALLOC(caps->host.secModels) < 0)
goto no_memory;
caps->host.nsecModels = 1;
if (VIR_STRDUP(caps->host.secModels[0].model, model) < 0)
goto error;
if (VIR_STRDUP(caps->host.secModels[0].doi, doi) < 0)
goto error;
}
VIR_DEBUG("Initialized caps for security driver \"%s\" with "
"DOI \"%s\"", model, doi);
} else {
VIR_INFO("No driver, not initializing security driver");
}
return caps;
no_memory:
virReportOOMError();
error:
virObjectUnref(caps);
return NULL;
}
