streamline copyin/copyout code in usertests

fix bugs in read/write return values when there's an error

1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/console.c b/kernel/console.c
index 9a18cd9..2b1ed3c 100644
--- a/kernel/console.c
+++ b/kernel/console.c
@@ -76,7 +76,7 @@ consolewrite(int user_src, uint64 src, int n)
   }
   release(&cons.lock);
 
-  return n;
+  return i;
 }
 
 //