[PATCH v4 1/7] libvirt: add new public API virConnectGetCPUModelNames

[Giuseppe Scrivano <gscrivan@xxxxxxxxxx>]

The new function virConnectGetCPUModelNames allows to retrieve the list
of CPU models known by the hypervisor for a specific architecture.

Signed-off-by: Giuseppe Scrivano <gscrivan@xxxxxxxxxx>
---
 include/libvirt/libvirt.h.in |  4 ++++
 python/generator.py          |  1 +
 src/driver.h                 |  7 ++++++
 src/libvirt.c                | 51 ++++++++++++++++++++++++++++++++++++++++++++
 src/libvirt_public.syms      |  5 +++++
 5 files changed, 68 insertions(+)

diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in
index 7944dfb..83c219e 100644
--- a/include/libvirt/libvirt.h.in
+++ b/include/libvirt/libvirt.h.in
@@ -4006,6 +4006,10 @@ int virConnectCompareCPU(virConnectPtr conn,
                          const char *xmlDesc,
                          unsigned int flags);
 
+int virConnectGetCPUModelNames(virConnectPtr conn,
+                               const char *arch,
+                               char ***models,
+                               unsigned int flags);
 
 /**
  * virConnectBaselineCPUFlags
diff --git a/python/generator.py b/python/generator.py
index a91dde8..73107d7 100755
--- a/python/generator.py
+++ b/python/generator.py
@@ -366,6 +366,7 @@ foreign_encoding_args = (
 # Class methods which are written by hand in libvirt.c but the Python-level
 # code is still automatically generated (so they are not in skip_function()).
 skip_impl = (
+    "virConnectGetCPUModelNames",
     'virConnectGetVersion',
     'virConnectGetLibVersion',
     'virConnectListDomainsID',
diff --git a/src/driver.h b/src/driver.h
index be64333..8cd164a 100644
--- a/src/driver.h
+++ b/src/driver.h
@@ -682,6 +682,12 @@ typedef char *
                             unsigned int flags);
 
 typedef int
+(*virDrvConnectGetCPUModelNames)(virConnectPtr conn,
+                                 const char *args,
+                                 char ***models,
+                                 unsigned int flags);
+
+typedef int
 (*virDrvDomainGetJobInfo)(virDomainPtr domain,
                           virDomainJobInfoPtr info);
 
@@ -1332,6 +1338,7 @@ struct _virDriver {
     virDrvDomainMigratePerform3Params domainMigratePerform3Params;
     virDrvDomainMigrateFinish3Params domainMigrateFinish3Params;
     virDrvDomainMigrateConfirm3Params domainMigrateConfirm3Params;
+    virDrvConnectGetCPUModelNames connectGetCPUModelNames;
 };
 
 
diff --git a/src/libvirt.c b/src/libvirt.c
index 3f65f12..6f99ed9 100644
--- a/src/libvirt.c
+++ b/src/libvirt.c
@@ -18525,6 +18525,57 @@ error:
 
 
 /**
+ * virConnectGetCPUModelNames:
+ *
+ * @conn: virConnect connection
+ * @arch: Architecture
+ * @models: Pointer to a variable to store the NULL-terminated array of the
+ *          CPU models supported for the specified architecture.  Each element
+ *          and the array itself must be freed by the caller with free.  Pass
+ *          NULL if only the list length is needed.
+ * @flags: extra flags; not used yet, so callers should always pass 0.
+ *
+ * Get the list of supported CPU models for a specific architecture.
+ *
+ * Returns -1 on error, number of elements in @models on success.
+ */
+int
+virConnectGetCPUModelNames(virConnectPtr conn, const char *arch, char ***models,
+                           unsigned int flags)
+{
+    VIR_DEBUG("conn=%p, arch=%s, models=%p, flags=%x",
+              conn, arch, models, flags);
+   virResetLastError();
+
+    if (models)
+        *models = NULL;
+
+    if (!VIR_IS_CONNECT(conn)) {
+        virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
+        virDispatchError(NULL);
+        return -1;
+    }
+    virCheckNonNullArgReturn(arch, -1);
+
+    if (conn->driver->connectGetCPUModelNames) {
+        int ret;
+
+        ret = conn->driver->connectGetCPUModelNames(conn, arch, models, flags);
+        if (ret < 0)
+            goto error;
+
+        return ret;
+    }
+
+    virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
+
+error:
+    virDispatchError(conn);
+    return -1;
+}
+
+
+/**
  * virConnectBaselineCPU:
  *
  * @conn: virConnect connection
diff --git a/src/libvirt_public.syms b/src/libvirt_public.syms
index bbdf78a..fe9b497 100644
--- a/src/libvirt_public.syms
+++ b/src/libvirt_public.syms
@@ -634,4 +634,9 @@ LIBVIRT_1.1.1 {
         virDomainSetMemoryStatsPeriod;
 } LIBVIRT_1.1.0;
 
+LIBVIRT_1.1.3 {
+    global:
+        virConnectGetCPUModelNames;
+} LIBVIRT_1.1.1;
+
 # .... define new API here using predicted next version number ....
-- 
1.8.3.1

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