am 4d0b21f4: am 4833d9f4: init: builtins: trancate target file in do_copy

Merge commit '4d0b21f4ac5908f695c9c0759c3a34511d8fd97b'

* commit '4d0b21f4ac5908f695c9c0759c3a34511d8fd97b':
  init: builtins: trancate target file in do_copy
diff --git a/init/builtins.c b/init/builtins.c
index 1e7cb4e..b4af700 100644
--- a/init/builtins.c
+++ b/init/builtins.c
@@ -459,7 +459,7 @@
     if ((fd1 = open(args[1], O_RDONLY)) < 0) 
         goto out_err;
 
-    if ((fd2 = open(args[2], O_WRONLY|O_CREAT, 0660)) < 0)
+    if ((fd2 = open(args[2], O_WRONLY|O_CREAT|O_TRUNC, 0660)) < 0)
         goto out_err;
 
     if (!(buffer = malloc(info.st_size)))