virConnectGetCPUModelNames: implement the remote protocol

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>

daemon/remote.c

@@ -5055,6 +5055,58 @@ cleanup:
 }
 
 
+static int
+remoteDispatchConnectGetCPUModelNames(virNetServerPtr server ATTRIBUTE_UNUSED,
+                                      virNetServerClientPtr client ATTRIBUTE_UNUSED,
+                                      virNetMessagePtr msg ATTRIBUTE_UNUSED,
+                                      virNetMessageErrorPtr rerr,
+                                      remote_connect_get_cpu_model_names_args *args,
+                                      remote_connect_get_cpu_model_names_ret *ret)
+{
+    int len, rv = -1;
+    char **models = NULL;
+    struct daemonClientPrivate *priv =
+        virNetServerClientGetPrivateData(client);
+
+    if (!priv->conn) {
+        virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("connection not open"));
+        goto cleanup;
+    }
+
+    len = virConnectGetCPUModelNames(priv->conn, args->arch,
+                                     args->need_results ? &models : NULL,
+                                     args->flags);
+    if (len < 0)
+        goto cleanup;
+
+    if (len > REMOTE_CONNECT_CPU_MODELS_MAX) {
+        virReportError(VIR_ERR_RPC,
+                       _("Too many CPU models '%d' for limit '%d'"),
+                       len, REMOTE_CONNECT_CPU_MODELS_MAX);
+        goto cleanup;
+    }
+
+    if (len && models) {
+        ret->models.models_val = models;
+        ret->models.models_len = len;
+        models = NULL;
+    } else {
+        ret->models.models_val = NULL;
+        ret->models.models_len = 0;
+    }
+
+    ret->ret = len;
+
+    rv = 0;
+
+cleanup:
+    if (rv < 0)
+        virNetMessageSaveError(rerr);
+    virStringFreeList(models);
+    return rv;
+}
+
+
 static int
 remoteDispatchDomainCreateXMLWithFiles(virNetServerPtr server ATTRIBUTE_UNUSED,
                                        virNetServerClientPtr client,

src/remote/remote_driver.c

@@ -5540,6 +5540,68 @@ done:
 }
 
 
+static int
+remoteConnectGetCPUModelNames(virConnectPtr conn,
+                              const char *arch,
+                              char ***models,
+                              unsigned int flags)
+{
+    int rv = -1;
+    size_t i;
+    char **retmodels = NULL;
+    remote_connect_get_cpu_model_names_args args;
+    remote_connect_get_cpu_model_names_ret ret;
+
+    struct private_data *priv = conn->privateData;
+
+    remoteDriverLock(priv);
+
+    args.arch = (char *) arch;
+    args.need_results = !!models;
+    args.flags = flags;
+
+    memset(&ret, 0, sizeof(ret));
+    if (call(conn, priv, 0, REMOTE_PROC_CONNECT_GET_CPU_MODEL_NAMES,
+             (xdrproc_t) xdr_remote_connect_get_cpu_model_names_args,
+             (char *) &args,
+             (xdrproc_t) xdr_remote_connect_get_cpu_model_names_ret,
+             (char *) &ret) < 0)
+        goto done;
+
+    /* Check the length of the returned list carefully. */
+    if (ret.models.models_len > REMOTE_CONNECT_CPU_MODELS_MAX) {
+        virReportError(VIR_ERR_RPC,
+                       _("Too many model names '%d' for limit '%d'"),
+                       ret.models.models_len,
+                       REMOTE_CONNECT_CPU_MODELS_MAX);
+        goto cleanup;
+    }
+
+    if (models) {
+        if (VIR_ALLOC_N(retmodels, ret.models.models_len + 1) < 0)
+            goto cleanup;
+
+        for (i = 0; i < ret.models.models_len; i++) {
+            retmodels[i] = ret.models.models_val[i];
+            ret.models.models_val[i] = NULL;
+        }
+        *models = retmodels;
+        retmodels = NULL;
+    }
+
+    rv = ret.ret;
+
+cleanup:
+    virStringFreeList(retmodels);
+
+    xdr_free((xdrproc_t) xdr_remote_connect_get_cpu_model_names_ret, (char *) &ret);
+
+done:
+    remoteDriverUnlock(priv);
+    return rv;
+}
+
+
 static int
 remoteDomainOpenGraphics(virDomainPtr dom,
                          unsigned int idx,
@@ -6933,6 +6995,7 @@ static virDriver remote_driver = {
     .domainMigratePerform3Params = remoteDomainMigratePerform3Params, /* 1.1.0 */
     .domainMigrateFinish3Params = remoteDomainMigrateFinish3Params, /* 1.1.0 */
     .domainMigrateConfirm3Params = remoteDomainMigrateConfirm3Params, /* 1.1.0 */
+    .connectGetCPUModelNames = remoteConnectGetCPUModelNames, /* 1.1.3 */
 };
 
 static virNetworkDriver network_driver = {

src/remote/remote_protocol.x

@@ -232,6 +232,9 @@ const REMOTE_DOMAIN_MIGRATE_PARAM_LIST_MAX = 64;
 /* Upper limit on number of job stats */
 const REMOTE_DOMAIN_JOB_STATS_MAX = 16;
 
+/* Upper limit on number of CPU models */
+const REMOTE_CONNECT_CPU_MODELS_MAX = 8192;
+
 /* UUID.  VIR_UUID_BUFLEN definition comes from libvirt.h */
 typedef opaque remote_uuid[VIR_UUID_BUFLEN];
 
@@ -2835,6 +2838,17 @@ struct remote_domain_event_device_removed_msg {
     remote_nonnull_string devAlias;
 };
 
+struct remote_connect_get_cpu_model_names_args {
+    remote_nonnull_string arch;
+    int need_results;
+    unsigned int flags;
+};
+
+struct remote_connect_get_cpu_model_names_ret {
+    remote_nonnull_string models<REMOTE_CONNECT_CPU_MODELS_MAX>;
+    int ret;
+};
+
 /*----- Protocol. -----*/
 
 /* Define the program number, protocol version and procedure numbers here. */
@@ -4998,5 +5012,11 @@ enum remote_procedure {
      * @generate: both
      * @acl: none
      */
-    REMOTE_PROC_DOMAIN_EVENT_DEVICE_REMOVED = 311
+    REMOTE_PROC_DOMAIN_EVENT_DEVICE_REMOVED = 311,
+
+    /**
+     * @generate: none
+     * @acl: connect:read
+     */
+    REMOTE_PROC_CONNECT_GET_CPU_MODEL_NAMES = 312
 };

src/remote_protocol-structs

@@ -2316,6 +2316,18 @@ struct remote_domain_event_device_removed_msg {
         remote_nonnull_domain      dom;
         remote_nonnull_string      devAlias;
 };
+struct remote_connect_get_cpu_model_names_args {
+        remote_nonnull_string      arch;
+        int                        need_results;
+        u_int                      flags;
+};
+struct remote_connect_get_cpu_model_names_ret {
+        struct {
+                u_int              models_len;
+                remote_nonnull_string * models_val;
+        } models;
+        int                        ret;
+};
 enum remote_procedure {
         REMOTE_PROC_CONNECT_OPEN = 1,
         REMOTE_PROC_CONNECT_CLOSE = 2,
@@ -2628,4 +2640,5 @@ enum remote_procedure {
         REMOTE_PROC_DOMAIN_CREATE_XML_WITH_FILES = 309,
         REMOTE_PROC_DOMAIN_CREATE_WITH_FILES = 310,
         REMOTE_PROC_DOMAIN_EVENT_DEVICE_REMOVED = 311,
+        REMOTE_PROC_CONNECT_GET_CPU_MODEL_NAMES = 312,
 };