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73411a7ff1
"host" CPU model is supported by a special host-passthrough CPU mode and users is not allowed to specify this model directly with custom mode. Thus we should not advertise "host" CPU model in domain capabilities. This worked well on architectures for which libvirt provides a list of supported CPU models in cpu_map.xml (since "host" is not in the list). But we need to explicitly filter "host" model out for all other architectures. Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
576 lines
15 KiB
C
576 lines
15 KiB
C
/*
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* domain_capabilities.c: domain capabilities XML processing
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*
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* Copyright (C) 2014 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* Author: Michal Privoznik <mprivozn@redhat.com>
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*/
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#include <config.h>
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#include "domain_capabilities.h"
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#include "domain_conf.h"
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#include "viralloc.h"
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#include "virstring.h"
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#define VIR_FROM_THIS VIR_FROM_CAPABILITIES
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VIR_ENUM_IMPL(virDomainCapsCPUUsable, VIR_DOMCAPS_CPU_USABLE_LAST,
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"unknown", "yes", "no");
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static virClassPtr virDomainCapsClass;
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static virClassPtr virDomainCapsCPUModelsClass;
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static void virDomainCapsDispose(void *obj);
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static void virDomainCapsCPUModelsDispose(void *obj);
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static int virDomainCapsOnceInit(void)
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{
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if (!(virDomainCapsClass = virClassNew(virClassForObjectLockable(),
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"virDomainCapsClass",
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sizeof(virDomainCaps),
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virDomainCapsDispose)))
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return -1;
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virDomainCapsCPUModelsClass = virClassNew(virClassForObject(),
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"virDomainCapsCPUModelsClass",
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sizeof(virDomainCapsCPUModels),
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virDomainCapsCPUModelsDispose);
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if (!virDomainCapsCPUModelsClass)
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return -1;
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return 0;
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}
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VIR_ONCE_GLOBAL_INIT(virDomainCaps)
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static void
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virDomainCapsStringValuesFree(virDomainCapsStringValuesPtr values)
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{
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size_t i;
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if (!values || !values->values)
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return;
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for (i = 0; i < values->nvalues; i++)
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VIR_FREE(values->values[i]);
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VIR_FREE(values->values);
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}
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static void
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virDomainCapsDispose(void *obj)
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{
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virDomainCapsPtr caps = obj;
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VIR_FREE(caps->path);
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VIR_FREE(caps->machine);
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virObjectUnref(caps->cpu.custom);
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virDomainCapsStringValuesFree(&caps->os.loader.values);
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}
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static void
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virDomainCapsCPUModelsDispose(void *obj)
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{
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virDomainCapsCPUModelsPtr cpuModels = obj;
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size_t i;
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for (i = 0; i < cpuModels->nmodels; i++)
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VIR_FREE(cpuModels->models[i].name);
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VIR_FREE(cpuModels->models);
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}
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virDomainCapsPtr
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virDomainCapsNew(const char *path,
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const char *machine,
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virArch arch,
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virDomainVirtType virttype)
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{
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virDomainCapsPtr caps = NULL;
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if (virDomainCapsInitialize() < 0)
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return NULL;
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if (!(caps = virObjectLockableNew(virDomainCapsClass)))
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return NULL;
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if (VIR_STRDUP(caps->path, path) < 0 ||
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VIR_STRDUP(caps->machine, machine) < 0)
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goto error;
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caps->arch = arch;
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caps->virttype = virttype;
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return caps;
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error:
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virObjectUnref(caps);
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return NULL;
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}
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virDomainCapsCPUModelsPtr
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virDomainCapsCPUModelsNew(size_t nmodels)
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{
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virDomainCapsCPUModelsPtr cpuModels = NULL;
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if (virDomainCapsInitialize() < 0)
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return NULL;
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if (!(cpuModels = virObjectNew(virDomainCapsCPUModelsClass)))
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return NULL;
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if (VIR_ALLOC_N(cpuModels->models, nmodels) < 0)
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goto error;
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cpuModels->nmodels_max = nmodels;
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return cpuModels;
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error:
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virObjectUnref(cpuModels);
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return NULL;
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}
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virDomainCapsCPUModelsPtr
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virDomainCapsCPUModelsCopy(virDomainCapsCPUModelsPtr old)
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{
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virDomainCapsCPUModelsPtr cpuModels;
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size_t i;
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if (!(cpuModels = virDomainCapsCPUModelsNew(old->nmodels)))
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return NULL;
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for (i = 0; i < old->nmodels; i++) {
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if (virDomainCapsCPUModelsAdd(cpuModels,
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old->models[i].name, -1,
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old->models[i].usable) < 0)
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goto error;
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}
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return cpuModels;
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error:
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virObjectUnref(cpuModels);
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return NULL;
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}
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virDomainCapsCPUModelsPtr
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virDomainCapsCPUModelsFilter(virDomainCapsCPUModelsPtr old,
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const char **models,
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const char **blacklist)
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{
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virDomainCapsCPUModelsPtr cpuModels;
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size_t i;
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if (!(cpuModels = virDomainCapsCPUModelsNew(0)))
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return NULL;
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for (i = 0; i < old->nmodels; i++) {
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if (models && !virStringListHasString(models, old->models[i].name))
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continue;
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if (blacklist && virStringListHasString(blacklist, old->models[i].name))
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continue;
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if (virDomainCapsCPUModelsAdd(cpuModels,
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old->models[i].name, -1,
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old->models[i].usable) < 0)
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goto error;
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}
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return cpuModels;
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error:
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virObjectUnref(cpuModels);
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return NULL;
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}
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int
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virDomainCapsCPUModelsAddSteal(virDomainCapsCPUModelsPtr cpuModels,
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char **name,
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virDomainCapsCPUUsable usable)
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{
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if (VIR_RESIZE_N(cpuModels->models, cpuModels->nmodels_max,
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cpuModels->nmodels, 1) < 0)
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return -1;
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cpuModels->models[cpuModels->nmodels].usable = usable;
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VIR_STEAL_PTR(cpuModels->models[cpuModels->nmodels].name, *name);
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cpuModels->nmodels++;
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return 0;
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}
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int
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virDomainCapsCPUModelsAdd(virDomainCapsCPUModelsPtr cpuModels,
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const char *name,
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ssize_t nameLen,
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virDomainCapsCPUUsable usable)
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{
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char *copy = NULL;
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if (VIR_STRNDUP(copy, name, nameLen) < 0)
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goto error;
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if (virDomainCapsCPUModelsAddSteal(cpuModels, ©, usable) < 0)
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goto error;
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return 0;
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error:
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VIR_FREE(copy);
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return -1;
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}
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int
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virDomainCapsEnumSet(virDomainCapsEnumPtr capsEnum,
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const char *capsEnumName,
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size_t nvalues,
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unsigned int *values)
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{
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int ret = -1;
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size_t i;
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for (i = 0; i < nvalues; i++) {
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unsigned int val = 1 << values[i];
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if (!val) {
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/* Integer overflow */
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("integer overflow on %s. Please contact the "
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"libvirt development team at libvir-list@redhat.com"),
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capsEnumName);
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goto cleanup;
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}
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capsEnum->values |= val;
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}
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ret = 0;
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cleanup:
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return ret;
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}
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void
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virDomainCapsEnumClear(virDomainCapsEnumPtr capsEnum)
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{
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capsEnum->values = 0;
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}
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static int
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virDomainCapsEnumFormat(virBufferPtr buf,
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virDomainCapsEnumPtr capsEnum,
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const char *capsEnumName,
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virDomainCapsValToStr valToStr)
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{
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int ret = -1;
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size_t i;
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virBufferAsprintf(buf, "<enum name='%s'", capsEnumName);
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if (!capsEnum->values) {
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virBufferAddLit(buf, "/>\n");
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ret = 0;
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goto cleanup;
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}
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virBufferAddLit(buf, ">\n");
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virBufferAdjustIndent(buf, 2);
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for (i = 0; i < sizeof(capsEnum->values) * CHAR_BIT; i++) {
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const char *val;
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if (!(capsEnum->values & (1 << i)))
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continue;
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if ((val = (valToStr)(i)))
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virBufferAsprintf(buf, "<value>%s</value>\n", val);
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}
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virBufferAdjustIndent(buf, -2);
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virBufferAddLit(buf, "</enum>\n");
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ret = 0;
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cleanup:
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return ret;
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}
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static void
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virDomainCapsStringValuesFormat(virBufferPtr buf,
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virDomainCapsStringValuesPtr values)
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{
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size_t i;
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for (i = 0; i < values->nvalues; i++)
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virBufferEscapeString(buf, "<value>%s</value>\n", values->values[i]);
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}
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#define FORMAT_PROLOGUE(item) \
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do { \
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virBufferAsprintf(buf, "<" #item " supported='%s'%s\n", \
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item->supported ? "yes" : "no", \
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item->supported ? ">" : "/>"); \
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if (!item->supported) \
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return; \
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virBufferAdjustIndent(buf, 2); \
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} while (0)
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#define FORMAT_EPILOGUE(item) \
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do { \
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virBufferAdjustIndent(buf, -2); \
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virBufferAddLit(buf, "</" #item ">\n"); \
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} while (0)
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#define ENUM_PROCESS(master, capsEnum, valToStr) \
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do { \
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virDomainCapsEnumFormat(buf, &master->capsEnum, \
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#capsEnum, valToStr); \
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} while (0)
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static void
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virDomainCapsLoaderFormat(virBufferPtr buf,
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virDomainCapsLoaderPtr loader)
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{
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FORMAT_PROLOGUE(loader);
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virDomainCapsStringValuesFormat(buf, &loader->values);
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ENUM_PROCESS(loader, type, virDomainLoaderTypeToString);
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ENUM_PROCESS(loader, readonly, virTristateBoolTypeToString);
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FORMAT_EPILOGUE(loader);
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}
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static void
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virDomainCapsOSFormat(virBufferPtr buf,
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virDomainCapsOSPtr os)
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{
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virDomainCapsLoaderPtr loader = &os->loader;
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FORMAT_PROLOGUE(os);
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virDomainCapsLoaderFormat(buf, loader);
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FORMAT_EPILOGUE(os);
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}
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static void
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virDomainCapsCPUCustomFormat(virBufferPtr buf,
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virDomainCapsCPUModelsPtr custom)
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{
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size_t i;
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virBufferAdjustIndent(buf, 2);
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for (i = 0; i < custom->nmodels; i++) {
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virDomainCapsCPUModelPtr model = custom->models + i;
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virBufferAsprintf(buf, "<model usable='%s'>%s</model>\n",
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virDomainCapsCPUUsableTypeToString(model->usable),
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model->name);
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}
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virBufferAdjustIndent(buf, -2);
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}
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static void
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virDomainCapsCPUFormat(virBufferPtr buf,
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virDomainCapsCPUPtr cpu)
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{
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virBufferAddLit(buf, "<cpu>\n");
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virBufferAdjustIndent(buf, 2);
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virBufferAsprintf(buf, "<mode name='%s' supported='%s'/>\n",
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virCPUModeTypeToString(VIR_CPU_MODE_HOST_PASSTHROUGH),
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cpu->hostPassthrough ? "yes" : "no");
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virBufferAsprintf(buf, "<mode name='%s' ",
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virCPUModeTypeToString(VIR_CPU_MODE_HOST_MODEL));
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if (cpu->hostModel) {
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virBufferAddLit(buf, "supported='yes'>\n");
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virBufferAdjustIndent(buf, 2);
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virCPUDefFormatBuf(buf, cpu->hostModel, false);
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virBufferAdjustIndent(buf, -2);
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virBufferAddLit(buf, "</mode>\n");
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} else {
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virBufferAddLit(buf, "supported='no'/>\n");
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}
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virBufferAsprintf(buf, "<mode name='%s' ",
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virCPUModeTypeToString(VIR_CPU_MODE_CUSTOM));
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if (cpu->custom && cpu->custom->nmodels) {
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virBufferAddLit(buf, "supported='yes'>\n");
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virDomainCapsCPUCustomFormat(buf, cpu->custom);
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virBufferAddLit(buf, "</mode>\n");
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} else {
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virBufferAddLit(buf, "supported='no'/>\n");
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}
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virBufferAdjustIndent(buf, -2);
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virBufferAddLit(buf, "</cpu>\n");
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}
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static void
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virDomainCapsDeviceDiskFormat(virBufferPtr buf,
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virDomainCapsDeviceDiskPtr const disk)
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{
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FORMAT_PROLOGUE(disk);
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ENUM_PROCESS(disk, diskDevice, virDomainDiskDeviceTypeToString);
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ENUM_PROCESS(disk, bus, virDomainDiskBusTypeToString);
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FORMAT_EPILOGUE(disk);
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}
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static void
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virDomainCapsDeviceGraphicsFormat(virBufferPtr buf,
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virDomainCapsDeviceGraphicsPtr const graphics)
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{
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FORMAT_PROLOGUE(graphics);
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ENUM_PROCESS(graphics, type, virDomainGraphicsTypeToString);
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FORMAT_EPILOGUE(graphics);
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}
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static void
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virDomainCapsDeviceVideoFormat(virBufferPtr buf,
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virDomainCapsDeviceVideoPtr const video)
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{
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FORMAT_PROLOGUE(video);
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ENUM_PROCESS(video, modelType, virDomainVideoTypeToString);
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FORMAT_EPILOGUE(video);
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}
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static void
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virDomainCapsDeviceHostdevFormat(virBufferPtr buf,
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virDomainCapsDeviceHostdevPtr const hostdev)
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{
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FORMAT_PROLOGUE(hostdev);
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ENUM_PROCESS(hostdev, mode, virDomainHostdevModeTypeToString);
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ENUM_PROCESS(hostdev, startupPolicy, virDomainStartupPolicyTypeToString);
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ENUM_PROCESS(hostdev, subsysType, virDomainHostdevSubsysTypeToString);
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ENUM_PROCESS(hostdev, capsType, virDomainHostdevCapsTypeToString);
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ENUM_PROCESS(hostdev, pciBackend, virDomainHostdevSubsysPCIBackendTypeToString);
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FORMAT_EPILOGUE(hostdev);
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}
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/**
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* virDomainCapsFeatureGICFormat:
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* @buf: target buffer
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* @gic: GIC features
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*
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* Format GIC features for inclusion in the domcapabilities XML.
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*
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* The resulting XML will look like
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*
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* <gic supported='yes'>
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* <enum name='version>
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* <value>2</value>
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* <value>3</value>
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* </enum>
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* </gic>
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*/
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static void
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virDomainCapsFeatureGICFormat(virBufferPtr buf,
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virDomainCapsFeatureGICPtr const gic)
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{
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FORMAT_PROLOGUE(gic);
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ENUM_PROCESS(gic, version, virGICVersionTypeToString);
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FORMAT_EPILOGUE(gic);
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}
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static int
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virDomainCapsFormatInternal(virBufferPtr buf,
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virDomainCapsPtr const caps)
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{
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const char *virttype_str = virDomainVirtTypeToString(caps->virttype);
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const char *arch_str = virArchToString(caps->arch);
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virBufferAddLit(buf, "<domainCapabilities>\n");
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virBufferAdjustIndent(buf, 2);
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virBufferEscapeString(buf, "<path>%s</path>\n", caps->path);
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virBufferAsprintf(buf, "<domain>%s</domain>\n", virttype_str);
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virBufferAsprintf(buf, "<machine>%s</machine>\n", caps->machine);
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virBufferAsprintf(buf, "<arch>%s</arch>\n", arch_str);
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if (caps->maxvcpus)
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virBufferAsprintf(buf, "<vcpu max='%d'/>\n", caps->maxvcpus);
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virDomainCapsOSFormat(buf, &caps->os);
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virDomainCapsCPUFormat(buf, &caps->cpu);
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virBufferAddLit(buf, "<devices>\n");
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virBufferAdjustIndent(buf, 2);
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virDomainCapsDeviceDiskFormat(buf, &caps->disk);
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virDomainCapsDeviceGraphicsFormat(buf, &caps->graphics);
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virDomainCapsDeviceVideoFormat(buf, &caps->video);
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virDomainCapsDeviceHostdevFormat(buf, &caps->hostdev);
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virBufferAdjustIndent(buf, -2);
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virBufferAddLit(buf, "</devices>\n");
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virBufferAddLit(buf, "<features>\n");
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virBufferAdjustIndent(buf, 2);
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virDomainCapsFeatureGICFormat(buf, &caps->gic);
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virBufferAdjustIndent(buf, -2);
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virBufferAddLit(buf, "</features>\n");
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virBufferAdjustIndent(buf, -2);
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virBufferAddLit(buf, "</domainCapabilities>\n");
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return 0;
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}
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|
char *
|
|
virDomainCapsFormat(virDomainCapsPtr const caps)
|
|
{
|
|
virBuffer buf = VIR_BUFFER_INITIALIZER;
|
|
|
|
if (virDomainCapsFormatInternal(&buf, caps) < 0) {
|
|
virBufferFreeAndReset(&buf);
|
|
return NULL;
|
|
}
|
|
|
|
return virBufferContentAndReset(&buf);
|
|
}
|