swarm/fuse: ignore default manifest entry (ethereum#792)

swarm/fuse/swarmfs_unix.go

@@ -120,6 +120,10 @@ func (swarmfs *SwarmFS) Mount(mhash, mountpoint string) (*MountInfo, error) {
 
 	log.Trace("swarmfs mount: traversing manifest map")
 	for suffix, entry := range manifestEntryMap {
+		if suffix == "" { //empty suffix means that the file has no name - i.e. this is the default entry in a manifest. Since we cannot have files without a name, let us ignore this entry
+			log.Warn("Manifest has an empty-path (default) entry which will be ignored in FUSE mount."))
+			continue
+		}
 		addr := common.Hex2Bytes(entry.Hash)
 		fullpath := "/" + suffix
 		basepath := filepath.Dir(fullpath)