complain if no disk 1

lots of cleanup

1 files changed, 1 insertions, 0 deletions

diff --git a/defs.h b/defs.h
index 1dd415c..752a7b7 100644
--- a/defs.h
+++ b/defs.h
@@ -116,6 +116,7 @@ void iinit(void);
 struct inode * iget(uint dev, uint inum);
 void ilock(struct inode *ip);
 void iunlock(struct inode *ip);
+void itrunc(struct inode *ip);
 void idecref(struct inode *ip);
 void iincref(struct inode *ip);
 void iput(struct inode *ip);