In getino, have our DEBUG message in the unhandled case mention that it

does not know what sort of UFS filesystem this is.

Add some DEBUG(NULL)'s to function entry points.

lib/libufs/inode.c

@@ -90,6 +90,6 @@ gotit:	switch (disk->d_ufs) {
 	default:
 		break;
 	}
-	DEBUG(NULL);
+	DEBUG("unknown UFS filesystem");
 	return -1;
 }

lib/libufs/sblock.c

@@ -96,6 +96,8 @@ sbwrite(struct uufsd *disk, int all)
 	struct fs *fs;
 	int i, rofd;
 
+	DEBUG(NULL);
+
 	fs = &disk->d_fs;
 
 	rofd = disk->d_fd;

lib/libufs/type.c

@@ -94,6 +94,8 @@ ufs_disk_fillout(struct uufsd *disk, const char *name)
 {
 	int fd;
 
+	DEBUG(NULL);
+
 	fd = open(name, O_RDONLY);
 	if (fd == -1) {
 		DEBUG("open");