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[libvirt] [PATCH v3 3/7] virConnectGetCPUModelNames: implement the remote protocol



Signed-off-by: Giuseppe Scrivano <gscrivan redhat com>
---
 daemon/remote.c              | 43 +++++++++++++++++++++++++++++++++
 src/remote/remote_driver.c   | 57 ++++++++++++++++++++++++++++++++++++++++++++
 src/remote/remote_protocol.x | 20 +++++++++++++++-
 src/remote_protocol-structs  | 11 +++++++++
 4 files changed, 130 insertions(+), 1 deletion(-)

diff --git a/daemon/remote.c b/daemon/remote.c
index 2aff7c1..d357016 100644
--- a/daemon/remote.c
+++ b/daemon/remote.c
@@ -5037,6 +5037,49 @@ 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;
+    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, &models,
+                                     args->flags);
+    if (len < 0)
+        goto cleanup;
+
+    if (ret->models.models_len > REMOTE_CONNECT_CPU_MODELS_MAX) {
+        virReportError(VIR_ERR_RPC,
+                       _("Too many CPU models '%d' for limit '%d'"),
+                       ret->models.models_len, REMOTE_CONNECT_CPU_MODELS_MAX);
+        virStringFreeList(models);
+        goto cleanup;
+    }
+
+    ret->models.models_val = models;
+    ret->models.models_len = len;
+
+    rv = 0;
+
+cleanup:
+    if (rv < 0)
+        virNetMessageSaveError(rerr);
+    return rv;
+}
+
+
+static int
 remoteDispatchDomainCreateXMLWithFiles(virNetServerPtr server ATTRIBUTE_UNUSED,
                                        virNetServerClientPtr client,
                                        virNetMessagePtr msg ATTRIBUTE_UNUSED,
diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c
index 62e77a5..aa3762a 100644
--- a/src/remote/remote_driver.c
+++ b/src/remote/remote_driver.c
@@ -5541,6 +5541,62 @@ done:
 
 
 static int
+remoteConnectGetCPUModelNames(virConnectPtr conn,
+                              const char *arch,
+                              char ***models,
+                              unsigned int flags)
+{
+    int rv = -1;
+    size_t i;
+    char **retmodels;
+    remote_connect_get_cpu_model_names_args args;
+    remote_connect_get_cpu_model_names_ret ret;
+    struct private_data *priv = conn->privateData;
+    remoteDriverLock(priv);
+
+    memset(&args, 0, sizeof(args));
+    memset(&ret, 0, sizeof(ret));
+
+    args.arch = (char *) arch;
+    args.flags = flags;
+
+    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 error;
+
+    /* Check the length of the returned list carefully. */
+    if (ret.models.models_len > REMOTE_CONNECT_CPU_MODELS_MAX) {
+        virReportError(VIR_ERR_RPC, "%s",
+                       _("remoteConnectGetCPUModelNames: "
+                         "returned number of CPU models exceeds limit"));
+        goto error;
+    }
+
+    if (VIR_ALLOC_N(retmodels, ret.models.models_len + 1) < 0)
+        goto error;
+
+    for (i = 0; i < ret.models.models_len; i++)
+        retmodels[i] = ret.models.models_val[i];
+
+    /* Caller frees MODELS.  */
+    *models = retmodels;
+    rv = ret.models.models_len;
+
+done:
+    remoteDriverUnlock(priv);
+    return rv;
+
+error:
+    rv = -1;
+    virStringFreeList(ret.models.models_val);
+    goto done;
+}
+
+
+static int
 remoteDomainOpenGraphics(virDomainPtr dom,
                          unsigned int idx,
                          int fd,
@@ -6933,6 +6989,7 @@ 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 = {
diff --git a/src/remote/remote_protocol.x b/src/remote/remote_protocol.x
index a1c23da..a1d90ad 100644
--- a/src/remote/remote_protocol.x
+++ b/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 +2838,15 @@ struct remote_domain_event_device_removed_msg {
     remote_nonnull_string devAlias;
 };
 
+struct remote_connect_get_cpu_model_names_args {
+    remote_nonnull_string arch;
+    unsigned int flags;
+};
+
+struct remote_connect_get_cpu_model_names_ret {
+    remote_nonnull_string models<REMOTE_CONNECT_CPU_MODELS_MAX>;
+};
+
 /*----- Protocol. -----*/
 
 /* Define the program number, protocol version and procedure numbers here. */
@@ -4998,5 +5010,11 @@ 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
 };
diff --git a/src/remote_protocol-structs b/src/remote_protocol-structs
index 4e27aae..9148202 100644
--- a/src/remote_protocol-structs
+++ b/src/remote_protocol-structs
@@ -2316,6 +2316,16 @@ 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;
+        u_int                      flags;
+};
+struct remote_connect_get_cpu_model_names_ret {
+        struct {
+                u_int              models_len;
+                remote_nonnull_string * models_val;
+        } models;
+};
 enum remote_procedure {
         REMOTE_PROC_CONNECT_OPEN = 1,
         REMOTE_PROC_CONNECT_CLOSE = 2,
@@ -2628,4 +2638,5 @@ 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,
 };
-- 
1.8.3.1


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