daemon: Introduce virNetServerProgramSendStreamHole

This is just a helper function that takes in a length value,
encodes it into XDR and sends to client.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

src/libvirt_remote.syms

@@ -178,6 +178,7 @@ virNetServerProgramNew;
 virNetServerProgramSendReplyError;
 virNetServerProgramSendStreamData;
 virNetServerProgramSendStreamError;
+virNetServerProgramSendStreamHole;
 virNetServerProgramUnknownError;
 
 

src/rpc/virnetserverprogram.c

@@ -548,6 +548,41 @@ int virNetServerProgramSendStreamData(virNetServerProgramPtr prog,
 }
 
 
+int virNetServerProgramSendStreamHole(virNetServerProgramPtr prog,
+                                      virNetServerClientPtr client,
+                                      virNetMessagePtr msg,
+                                      int procedure,
+                                      unsigned int serial,
+                                      long long length,
+                                      unsigned int flags)
+{
+    virNetStreamHole data;
+
+    VIR_DEBUG("client=%p msg=%p length=%lld", client, msg, length);
+
+    memset(&data, 0, sizeof(data));
+    data.length = length;
+    data.flags = flags;
+
+    msg->header.prog = prog->program;
+    msg->header.vers = prog->version;
+    msg->header.proc = procedure;
+    msg->header.type = VIR_NET_STREAM_HOLE;
+    msg->header.serial = serial;
+    msg->header.status = VIR_NET_CONTINUE;
+
+    if (virNetMessageEncodeHeader(msg) < 0)
+        return -1;
+
+    if (virNetMessageEncodePayload(msg,
+                                   (xdrproc_t) xdr_virNetStreamHole,
+                                   &data) < 0)
+        return -1;
+
+    return virNetServerClientSendMessage(client, msg);
+}
+
+
 void virNetServerProgramDispose(void *obj ATTRIBUTE_UNUSED)
 {
 }

src/rpc/virnetserverprogram.h

@@ -104,4 +104,12 @@ int virNetServerProgramSendStreamData(virNetServerProgramPtr prog,
                                       const char *data,
                                       size_t len);
 
+int virNetServerProgramSendStreamHole(virNetServerProgramPtr prog,
+                                      virNetServerClientPtr client,
+                                      virNetMessagePtr msg,
+                                      int procedure,
+                                      unsigned int serial,
+                                      long long length,
+                                      unsigned int flags);
+
 #endif /* __VIR_NET_SERVER_PROGRAM_H__ */