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qemu: domain: Add support for modifying qemu capability list via qemu namespace

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For testing purposes it's sometimes desired to be able to control the
presence of capabilities of qemu. This adds the possibility to do this
via the qemu namespace.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2019-06-17 17:55:52 +02:00
parent c6da5913d9
commit 3616ec3927
2 changed files with 48 additions and 0 deletions
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8
src/qemu/qemu_domain.c
View File

@ -8320,6 +8320,7 @@ void qemuDomainObjCheckTaint(virQEMUDriverPtr driver,
size_t i;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
qemuDomainObjPrivatePtr priv = obj->privateData;
bool custom_hypervisor_feat = false;
if (virQEMUDriverIsPrivileged(driver) &&
(!cfg->clearEmulatorCapabilities ||
@ -8334,6 +8335,13 @@ void qemuDomainObjCheckTaint(virQEMUDriverPtr driver,
qemuDomainXmlNsDefPtr qemuxmlns = obj->def->namespaceData;
if (qemuxmlns->num_args || qemuxmlns->num_env)
qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_CUSTOM_ARGV, logCtxt);
if (qemuxmlns->ncapsadd > 0 || qemuxmlns->ncapsdel > 0)
custom_hypervisor_feat = true;
}
if (custom_hypervisor_feat) {
qemuDomainObjTaint(driver, obj,
VIR_DOMAIN_TAINT_CUSTOM_HYPERVISOR_FEATURE, logCtxt);
}
if (obj->def->cpu && obj->def->cpu->mode == VIR_CPU_MODE_HOST_PASSTHROUGH)

40
src/qemu/qemu_process.c
View File

@ -5448,6 +5448,42 @@ qemuProcessStartValidate(virQEMUDriverPtr driver,
}
static int
qemuProcessStartUpdateCustomCaps(virDomainObjPtr vm)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
qemuDomainXmlNsDefPtr nsdef = vm->def->namespaceData;
int tmp;
size_t i;
if (nsdef) {
for (i = 0; i < nsdef->ncapsadd; i++) {
if ((tmp = virQEMUCapsTypeFromString(nsdef->capsadd[i])) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("invalid qemu namespace capability '%s'"),
nsdef->capsadd[i]);
return -1;
}
virQEMUCapsSet(priv->qemuCaps, tmp);
}
for (i = 0; i < nsdef->ncapsdel; i++) {
if ((tmp = virQEMUCapsTypeFromString(nsdef->capsdel[i])) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("invalid qemu namespace capability '%s'"),
nsdef->capsdel[i]);
return -1;
}
virQEMUCapsClear(priv->qemuCaps, tmp);
}
}
return 0;
}
/**
* qemuProcessInit:
*
@ -5518,6 +5554,10 @@ qemuProcessInit(virQEMUDriverPtr driver,
if (virDomainObjSetDefTransient(caps, driver->xmlopt, vm) < 0)
goto cleanup;
/* Update qemu capabilities according to lists passed in via namespace */
if (qemuProcessStartUpdateCustomCaps(vm) < 0)
goto cleanup;
if (flags & VIR_QEMU_PROCESS_START_PRETEND) {
if (qemuDomainSetPrivatePaths(driver, vm) < 0) {
virDomainObjRemoveTransientDef(vm);