remote: implement virDomainGetGuestInfo

Add daemon and client code to serialize/deserialize
virDomainGetGuestInfo().

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Tested-by: Daniel Henrique Barboza <danielhb413@gmail.com>

src/remote/remote_daemon_dispatch.c

@@ -7650,3 +7650,50 @@ remoteSerializeDomainDiskErrors(virDomainDiskErrorPtr errors,
     }
     return -1;
 }
+
+static int
+remoteDispatchDomainGetGuestInfo(virNetServerPtr server ATTRIBUTE_UNUSED,
+                                 virNetServerClientPtr client,
+                                 virNetMessagePtr msg ATTRIBUTE_UNUSED,
+                                 virNetMessageErrorPtr rerr,
+                                 remote_domain_get_guest_info_args *args,
+                                 remote_domain_get_guest_info_ret *ret)
+{
+    int rv = -1;
+    virConnectPtr conn = remoteGetHypervisorConn(client);
+    virDomainPtr dom = NULL;
+    virTypedParameterPtr params = NULL;
+    int nparams = 0;
+
+    if (!conn)
+        goto cleanup;
+
+    if (!(dom = get_nonnull_domain(conn, args->dom)))
+        goto cleanup;
+
+    if (virDomainGetGuestInfo(dom, args->types, &params, &nparams, args->flags) < 0)
+        goto cleanup;
+
+    if (nparams > REMOTE_DOMAIN_GUEST_INFO_PARAMS_MAX) {
+        virReportError(VIR_ERR_RPC,
+                       _("Too many params in guestinfo: %d for limit %d"),
+                       nparams, REMOTE_DOMAIN_GUEST_INFO_PARAMS_MAX);
+        goto cleanup;
+    }
+
+    if (virTypedParamsSerialize(params, nparams,
+                                (virTypedParameterRemotePtr *) &ret->params.params_val,
+                                &ret->params.params_len,
+                                VIR_TYPED_PARAM_STRING_OKAY) < 0)
+        goto cleanup;
+
+    rv = 0;
+
+ cleanup:
+    if (rv < 0)
+        virNetMessageSaveError(rerr);
+    virTypedParamsFree(params, nparams);
+    virObjectUnref(dom);
+
+    return rv;
+}

src/remote/remote_driver.c

@@ -8306,6 +8306,49 @@ remoteNetworkPortGetParameters(virNetworkPortPtr port,
     return rv;
 }
 
+static int
+remoteDomainGetGuestInfo(virDomainPtr dom,
+                         unsigned int types,
+                         virTypedParameterPtr *params,
+                         int *nparams,
+                         unsigned int flags)
+{
+    int rv = -1;
+    struct private_data *priv = dom->conn->privateData;
+    remote_domain_get_guest_info_args args;
+    remote_domain_get_guest_info_ret ret;
+
+    remoteDriverLock(priv);
+
+    make_nonnull_domain(&args.dom, dom);
+
+    args.types = types;
+    args.flags = flags;
+
+    memset(&ret, 0, sizeof(ret));
+
+    if (call(dom->conn, priv, 0, REMOTE_PROC_DOMAIN_GET_GUEST_INFO,
+             (xdrproc_t)xdr_remote_domain_get_guest_info_args, (char *)&args,
+             (xdrproc_t)xdr_remote_domain_get_guest_info_ret, (char *)&ret) == -1)
+        goto done;
+
+    if (virTypedParamsDeserialize((virTypedParameterRemotePtr) ret.params.params_val,
+                                  ret.params.params_len,
+                                  REMOTE_DOMAIN_GUEST_INFO_PARAMS_MAX,
+                                  params,
+                                  nparams) < 0)
+        goto cleanup;
+
+    rv = 0;
+
+ cleanup:
+    xdr_free((xdrproc_t)xdr_remote_domain_get_guest_info_ret,
+             (char *) &ret);
+
+ done:
+    remoteDriverUnlock(priv);
+    return rv;
+}
 
 /* get_nonnull_domain and get_nonnull_network turn an on-wire
  * (name, uuid) pair into virDomainPtr or virNetworkPtr object.
@@ -8733,6 +8776,7 @@ static virHypervisorDriver hypervisor_driver = {
     .domainCheckpointLookupByName = remoteDomainCheckpointLookupByName, /* 5.6.0 */
     .domainCheckpointGetParent = remoteDomainCheckpointGetParent, /* 5.6.0 */
     .domainCheckpointDelete = remoteDomainCheckpointDelete, /* 5.6.0 */
+    .domainGetGuestInfo = remoteDomainGetGuestInfo, /* 5.7.0 */
 };
 
 static virNetworkDriver network_driver = {

src/remote/remote_protocol.x

@@ -269,6 +269,9 @@ const REMOTE_NODE_SEV_INFO_MAX = 64;
 /* Upper limit on number of launch security information entries */
 const REMOTE_DOMAIN_LAUNCH_SECURITY_INFO_PARAMS_MAX = 64;
 
+/* Upper limit on number of parameters describing a guest */
+const REMOTE_DOMAIN_GUEST_INFO_PARAMS_MAX = 2048;
+
 /*
  * Upper limit on list of network port parameters
  */
@@ -3723,6 +3726,16 @@ struct remote_domain_checkpoint_delete_args {
     unsigned int flags;
 };
 
+struct remote_domain_get_guest_info_args {
+    remote_nonnull_domain dom;
+    unsigned int types;
+    unsigned int flags;
+};
+
+struct remote_domain_get_guest_info_ret {
+    remote_typed_param params<REMOTE_DOMAIN_GUEST_INFO_PARAMS_MAX>;
+};
+
 /*----- Protocol. -----*/
 
 /* Define the program number, protocol version and procedure numbers here. */
@@ -6584,5 +6597,11 @@ enum remote_procedure {
      * @generate: both
      * @acl: domain:checkpoint
      */
-    REMOTE_PROC_DOMAIN_CHECKPOINT_DELETE = 417
+    REMOTE_PROC_DOMAIN_CHECKPOINT_DELETE = 417,
+
+    /**
+     * @generate: none
+     * @acl: domain:write
+     */
+    REMOTE_PROC_DOMAIN_GET_GUEST_INFO = 418
 };

src/remote_protocol-structs

@@ -3105,6 +3105,17 @@ struct remote_domain_checkpoint_delete_args {
         remote_nonnull_domain_checkpoint checkpoint;
         u_int                      flags;
 };
+struct remote_domain_get_guest_info_args {
+        remote_nonnull_domain      dom;
+        u_int                      types;
+        u_int                      flags;
+};
+struct remote_domain_get_guest_info_ret {
+        struct {
+                u_int              params_len;
+                remote_typed_param * params_val;
+        } params;
+};
 enum remote_procedure {
         REMOTE_PROC_CONNECT_OPEN = 1,
         REMOTE_PROC_CONNECT_CLOSE = 2,
@@ -3523,4 +3534,5 @@ enum remote_procedure {
         REMOTE_PROC_DOMAIN_CHECKPOINT_LOOKUP_BY_NAME = 415,
         REMOTE_PROC_DOMAIN_CHECKPOINT_GET_PARENT = 416,
         REMOTE_PROC_DOMAIN_CHECKPOINT_DELETE = 417,
+        REMOTE_PROC_DOMAIN_GET_GUEST_INFO = 418,
 };