Cannot write files to HDFS

Hello,

I downloaded and build the code yesterday.  While I can successfully mount HDFS and read from it, I have been unable to put files into HDFS.  I'm calling it from the command line like this:

```
./native-hdfs-fuse <namenode> <port> /var/data/hdfs/ -o rw,sync
```

If I run the mount command, I see the mount and it looks good.  Thoughts?
