1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/defs.h b/kernel/defs.h
index 04a0276..870c984 100644
--- a/kernel/defs.h
+++ b/kernel/defs.h
@@ -23,6 +23,9 @@ void            consoleinit(void);
 void            consoleintr(int);
 void            consputc(int);
 
+// cow.c
+int             cow_handler(pagetable_t, uint64);
+
 // exec.c
 int             exec(char*, char**);
 
@@ -61,6 +64,8 @@ void            ramdiskintr(void);
 void            ramdiskrw(struct buf*);
 
 // kalloc.c
+int             refcnt_inc(uint64);
+int             refcnt_dec(uint64);
 void*           kalloc(void);
 void            kfree(void *);
 void            kinit(void);