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qemu: Improve validation for virtio input devices

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While the parser and schema have to accept all possible models,
virtio-(non-)transitional models are only applicable to
type=passthrough and should be otherwise rejected.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
This commit is contained in:
Andrea Bolognani 2019-03-06 12:30:25 +01:00
parent 7a05c739c2
commit ff3f22e0ec
4 changed files with 48 additions and 0 deletions
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1
src/libvirt_private.syms
View File

@ -420,6 +420,7 @@ virDomainInputBusTypeToString;
virDomainInputDefFind;
virDomainInputDefFree;
virDomainInputDefGetPath;
virDomainInputTypeToString;
virDomainIOMMUModelTypeFromString;
virDomainIOMMUModelTypeToString;
virDomainIOThreadIDAdd;

32
src/qemu/qemu_domain.c
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@ -5971,6 +5971,38 @@ qemuDomainDeviceDefValidateInput(const virDomainInputDef *input,
if (input->bus != VIR_DOMAIN_INPUT_BUS_VIRTIO)
return 0;
/* Only type=passthrough supports model=virtio-(non-)transitional */
switch ((virDomainInputModel)input->model) {
case VIR_DOMAIN_INPUT_MODEL_VIRTIO_TRANSITIONAL:
case VIR_DOMAIN_INPUT_MODEL_VIRTIO_NON_TRANSITIONAL:
switch ((virDomainInputType)input->type) {
case VIR_DOMAIN_INPUT_TYPE_MOUSE:
case VIR_DOMAIN_INPUT_TYPE_TABLET:
case VIR_DOMAIN_INPUT_TYPE_KBD:
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("virtio (non-)transitional models are not "
"supported for input type=%s"),
virDomainInputTypeToString(input->type));
return -1;
case VIR_DOMAIN_INPUT_TYPE_PASSTHROUGH:
break;
case VIR_DOMAIN_INPUT_TYPE_LAST:
default:
virReportEnumRangeError(virDomainInputType,
input->type);
return -1;
}
break;
case VIR_DOMAIN_INPUT_MODEL_VIRTIO:
case VIR_DOMAIN_INPUT_MODEL_DEFAULT:
break;
case VIR_DOMAIN_INPUT_MODEL_LAST:
default:
virReportEnumRangeError(virDomainInputModel,
input->model);
return -1;
}
switch ((virDomainInputType)input->type) {
case VIR_DOMAIN_INPUT_TYPE_MOUSE:
baseName = "virtio-mouse";

11
tests/qemuxml2argvdata/virtio-transitional-not-supported.xml Normal file
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@ -0,0 +1,11 @@
<domain type='qemu'>
<name>QEMUGuest1</name>
<uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
<memory unit='KiB'>219136</memory>
<os>
<type arch='x86_64' machine='q35'>hvm</type>
</os>
<devices>
<input type='keyboard' bus='virtio' model='virtio-non-transitional'/>
</devices>
</domain>

4
tests/qemuxml2argvtest.c
View File

@ -3001,6 +3001,10 @@ mymain(void)
DO_TEST_CAPS_VER("virtio-non-transitional", "3.1.0");
DO_TEST_CAPS_LATEST("virtio-transitional");
DO_TEST_CAPS_LATEST("virtio-non-transitional");
DO_TEST_PARSE_ERROR("virtio-transitional-not-supported",
QEMU_CAPS_DEVICE_DMI_TO_PCI_BRIDGE,
QEMU_CAPS_DEVICE_PCI_BRIDGE,
QEMU_CAPS_DEVICE_IOH3420);
/* Simple headless guests for various architectures */
DO_TEST_CAPS_ARCH_LATEST("aarch64-virt-headless", "aarch64");