[libvirt] [PATCH v4 29/37] qemu_capabilities: Introduce virCPUDef to CPUModelInfo function

[Chris Venteicher]

Create public function to convert virCPUDef data structure into
qemuMonitorCPUModelInfoPtr data structure.

There was no existing code to reuse to create this function
so this new virQEMUCapsCPUModelInfoFromCPUDef function was based on
reversing the action of the existing virQEMUCapsCPUModelInfoToCPUDef
function.

Signed-off-by: Chris Venteicher <cventeic at redhat.com>
---
 src/qemu/qemu_capabilities.c | 46 ++++++++++++++++++++++++++++++++++++
 src/qemu/qemu_capabilities.h |  1 +
 2 files changed, 47 insertions(+)

diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index dcd6ffb876..54b94c4dda 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -3620,6 +3620,51 @@ virQEMUCapsLoadCache(virArch hostArch,
 }
 
 
+/* virCPUDef model    => qemuMonitorCPUModelInfo name
+ * virCPUDef features => qemuMonitorCPUModelInfo boolean properties */
+qemuMonitorCPUModelInfoPtr
+virQEMUCapsCPUModelInfoFromCPUDef(const virCPUDef *cpuDef)
+{
+    size_t i;
+    qemuMonitorCPUModelInfoPtr cpuModel = NULL;
+    qemuMonitorCPUModelInfoPtr ret = NULL;
+
+    if (!cpuDef || (VIR_ALLOC(cpuModel) < 0))
+        goto cleanup;
+
+    VIR_DEBUG("cpuDef->model = %s", NULLSTR(cpuDef->model));
+
+    if (VIR_STRDUP(cpuModel->name, cpuDef->model) < 0 ||
+        VIR_ALLOC_N(cpuModel->props, cpuDef->nfeatures) < 0)
+        goto cleanup;
+
+    cpuModel->nprops = 0;
+
+    for (i = 0; i < cpuDef->nfeatures; i++) {
+        qemuMonitorCPUPropertyPtr prop = &(cpuModel->props[cpuModel->nprops]);
+        virCPUFeatureDefPtr feature = &(cpuDef->features[i]);
+
+        if (!(feature->name) ||
+            VIR_STRDUP(prop->name, feature->name) < 0)
+            goto cleanup;
+
+        prop->type = QEMU_MONITOR_CPU_PROPERTY_BOOLEAN;
+
+        prop->value.boolean = feature->policy == -1 || /* policy undefined */
+                              feature->policy == VIR_CPU_FEATURE_FORCE ||
+                              feature->policy == VIR_CPU_FEATURE_REQUIRE;
+
+        cpuModel->nprops++;
+    }
+
+    VIR_STEAL_PTR(ret, cpuModel);
+
+ cleanup:
+    qemuMonitorCPUModelInfoFree(cpuModel);
+    return ret;
+}
+
+
 /* qemuMonitorCPUModelInfo name               => virCPUDef model
  * qemuMonitorCPUModelInfo boolean properties => virCPUDef features
  *
@@ -3671,6 +3716,7 @@ virQEMUCapsCPUModelInfoToCPUDef(bool migratable, qemuMonitorCPUModelInfoPtr mode
     return ret;
 }
 
+
 static void
 virQEMUCapsFormatHostCPUModelInfo(virQEMUCapsPtr qemuCaps,
                                   virBufferPtr buf,
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index a377d7b912..ea5e021ca6 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -572,6 +572,7 @@ int virQEMUCapsGetMachineTypesCaps(virQEMUCapsPtr qemuCaps,
 void virQEMUCapsFilterByMachineType(virQEMUCapsPtr qemuCaps,
                                     const char *machineType);
 
+qemuMonitorCPUModelInfoPtr virQEMUCapsCPUModelInfoFromCPUDef(const virCPUDef *cpuDef);
 virCPUDefPtr virQEMUCapsCPUModelInfoToCPUDef(bool migratable,
                                              qemuMonitorCPUModelInfoPtr model);
 
-- 
2.17.1