Introduce virNetClientStreamRecvHole

This function will fetch previously processed stream holes and
return their sum.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

src/libvirt_remote.syms

@@ -52,6 +52,7 @@ virNetClientStreamMatches;
 virNetClientStreamNew;
 virNetClientStreamQueuePacket;
 virNetClientStreamRaiseError;
+virNetClientStreamRecvHole;
 virNetClientStreamRecvPacket;
 virNetClientStreamSendHole;
 virNetClientStreamSendPacket;

src/rpc/virnetclientstream.c

@@ -584,6 +584,23 @@ virNetClientStreamSendHole(virNetClientStreamPtr st,
 }
 
 
+int
+virNetClientStreamRecvHole(virNetClientPtr client ATTRIBUTE_UNUSED,
+                           virNetClientStreamPtr st,
+                           long long *length)
+{
+    if (!st->allowSkip) {
+        virReportError(VIR_ERR_OPERATION_INVALID, "%s",
+                       _("Holes are not supported with this stream"));
+        return -1;
+    }
+
+    *length = st->holeLength;
+    st->holeLength = 0;
+    return 0;
+}
+
+
 int virNetClientStreamEventAddCallback(virNetClientStreamPtr st,
                                        int events,
                                        virNetClientStreamEventCallback cb,

src/rpc/virnetclientstream.h

@@ -67,6 +67,10 @@ int virNetClientStreamSendHole(virNetClientStreamPtr st,
                                long long length,
                                unsigned int flags);
 
+int virNetClientStreamRecvHole(virNetClientPtr client,
+                               virNetClientStreamPtr st,
+                               long long *length);
+
 int virNetClientStreamEventAddCallback(virNetClientStreamPtr st,
                                        int events,
                                        virNetClientStreamEventCallback cb,