[PATCH 8/8] conf: Don't lose <active_pcr_banks/> when no TPM version is provided

[Michal Privoznik]

When no TPM version is provided in the input XML we may default
to version 2.0 (see qemuDomainTPMDefPostParse()). However,
<active_pcr_banks/> are parsed iff a version 2.0 was specified.
This means that this piece of information might be lost.

It's better to parse everything we've been given and then
validate that the configuration is valid.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2084046
Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
 src/conf/domain_conf.c     | 21 ++++++++++-----------
 src/conf/domain_validate.c | 28 +++++++++++++++++++++++++++-
 2 files changed, 37 insertions(+), 12 deletions(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 6263d90fdb..610fa5262b 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -10422,18 +10422,17 @@ virDomainTPMDefParseXML(virDomainXMLOption *xmlopt,
                 goto error;
             }
         }
-        if (def->data.emulator.version == VIR_DOMAIN_TPM_VERSION_2_0) {
-            if ((nnodes = virXPathNodeSet("./backend/active_pcr_banks/*", ctxt, &nodes)) < 0)
-                break;
-            for (i = 0; i < nnodes; i++) {
-                if ((bank = virDomainTPMPcrBankTypeFromString((const char *)nodes[i]->name)) < 0) {
-                    virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
-                                   _("Unsupported PCR banks '%s'"),
-                                   nodes[i]->name);
-                    goto error;
-                }
-                def->data.emulator.activePcrBanks |= (1 << bank);
+
+        if ((nnodes = virXPathNodeSet("./backend/active_pcr_banks/*", ctxt, &nodes)) < 0)
+            break;
+        for (i = 0; i < nnodes; i++) {
+            if ((bank = virDomainTPMPcrBankTypeFromString((const char *)nodes[i]->name)) < 0) {
+                virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+                               _("Unsupported PCR banks '%s'"),
+                               nodes[i]->name);
+                goto error;
             }
+            def->data.emulator.activePcrBanks |= (1 << bank);
         }
         break;
     case VIR_DOMAIN_TPM_TYPE_LAST:
diff --git a/src/conf/domain_validate.c b/src/conf/domain_validate.c
index 814922cd46..8d4a69f127 100644
--- a/src/conf/domain_validate.c
+++ b/src/conf/domain_validate.c
@@ -2611,6 +2611,30 @@ virDomainIOMMUDefValidate(const virDomainIOMMUDef *iommu)
     return 0;
 }
 
+
+static int
+virDomainTPMDevValidate(const virDomainTPMDef *tpm)
+{
+    switch (tpm->type) {
+    case VIR_DOMAIN_TPM_TYPE_EMULATOR:
+        if (tpm->data.emulator.activePcrBanks &&
+            tpm->data.emulator.version != VIR_DOMAIN_TPM_VERSION_2_0) {
+            virReportError(VIR_ERR_XML_ERROR,
+                           _("<active_pcr_banks/> requires TPM version '%s'"),
+                           virDomainTPMVersionTypeToString(VIR_DOMAIN_TPM_VERSION_2_0));
+            return -1;
+        }
+        break;
+
+    case VIR_DOMAIN_TPM_TYPE_PASSTHROUGH:
+    case VIR_DOMAIN_TPM_TYPE_LAST:
+        break;
+    }
+
+    return 0;
+}
+
+
 static int
 virDomainDeviceInfoValidate(const virDomainDeviceDef *dev)
 {
@@ -2715,12 +2739,14 @@ virDomainDeviceDefValidateInternal(const virDomainDeviceDef *dev,
     case VIR_DOMAIN_DEVICE_IOMMU:
         return virDomainIOMMUDefValidate(dev->data.iommu);
 
+    case VIR_DOMAIN_DEVICE_TPM:
+        return virDomainTPMDevValidate(dev->data.tpm);
+
     case VIR_DOMAIN_DEVICE_LEASE:
     case VIR_DOMAIN_DEVICE_WATCHDOG:
     case VIR_DOMAIN_DEVICE_HUB:
     case VIR_DOMAIN_DEVICE_MEMBALLOON:
     case VIR_DOMAIN_DEVICE_NVRAM:
-    case VIR_DOMAIN_DEVICE_TPM:
     case VIR_DOMAIN_DEVICE_PANIC:
     case VIR_DOMAIN_DEVICE_NONE:
     case VIR_DOMAIN_DEVICE_LAST:
-- 
2.35.1