nfs42: fix NFSERR_BAD_STATEID for server side copy with locks

Motivation:
As COPY operation can be called on files when locks are held, then
instead of open state ids the COPY will be called with lock state ids.

Modification:
Update COPY operation to use open state ids when file open modes are
checked.

Result:
passing NFS compatibility tests.

Acked-by: Lea Morschel
Target: master, 0.23

Author: kofemann

core/src/main/java/org/dcache/nfs/v4/OperationCOPY.java

@@ -88,8 +88,14 @@ public void process(CompoundContext context, nfs_resop4 result) throws ChimeraNF
 
         NFS4Client client = context.getSession().getClient();
 
-        int srcAccess = context.getStateHandler().getFileTracker().getShareAccess(client, srcInode, _args.opcopy.ca_src_stateid);
-        int dstAccess = context.getStateHandler().getFileTracker().getShareAccess(client, dstInode, _args.opcopy.ca_dst_stateid);
+        NFS4State srcState = client.state(_args.opcopy.ca_src_stateid);
+        NFS4State dstState = client.state(_args.opcopy.ca_dst_stateid);
+
+        int srcAccess = context.getStateHandler().getFileTracker()
+              .getShareAccess(client, srcInode, srcState.getOpenState().stateid());
+
+        int dstAccess = context.getStateHandler().getFileTracker()
+              .getShareAccess(client, dstInode, dstState.getOpenState().stateid());
 
         if ((srcAccess & nfs4_prot.OPEN4_SHARE_ACCESS_READ) == 0) {
             throw new OpenModeException("Invalid source inode open mode (required read)");