1 files changed, 11 insertions, 0 deletions
diff --git a/fs.c b/fs.c
index cf530a9..d921221 100644
--- a/fs.c
+++ b/fs.c
@@ -8,6 +8,7 @@
 #include "buf.h"
 #include "fs.h"
 #include "fsvar.h"
+#include "dev.h"
 
 // these are inodes currently in use
 // an entry is free if count == 0
@@ -252,6 +253,16 @@ readi(struct inode *ip, void *xdst, uint off, uint n)
   return target - n;
 }
 
+int
+writei(struct inode *ip, void *addr, uint n)
+{
+  if (ip->type == T_DEV) {
+    return devsw[ip->major].d_write (ip->minor, addr, n);
+  } else {
+    panic ("writei: unknown type\n");
+  }
+}
+
 struct inode *
 namei(char *path)
 {