SetAttr3 setAttr3 = request.getObjAttr();
FsPermission permission = setAttr3.getUpdateFields().contains(
SetAttrField.MODE) ? new FsPermission((short) setAttr3.getMode())
: FsPermission.getDefault().applyUMask(umask);
if (!dfsClient.mkdirs(fileIdPath, permission, false)) {
WccData dirWcc = Nfs3Utils.createWccData(
Nfs3Utils.getWccAttr(preOpDirAttr), dfsClient, dirFileIdPath, iug);
return new MKDIR3Response(Nfs3Status.NFS3ERR_IO, null, null, dirWcc);
}