1 files changed, 7 insertions, 0 deletions
diff --git a/util-linux/pivot_root.c b/util-linux/pivot_root.c
index ac52a7aed..83f01fabd 100644
--- a/util-linux/pivot_root.c
+++ b/util-linux/pivot_root.c
@@ -8,6 +8,13 @@
  *
  * Licensed under GPLv2, see file LICENSE in this source tree.
  */
+
+//usage:#define pivot_root_trivial_usage
+//usage:       "NEW_ROOT PUT_OLD"
+//usage:#define pivot_root_full_usage "\n\n"
+//usage:       "Move the current root file system to PUT_OLD and make NEW_ROOT\n"
+//usage:       "the new root file system"
+
 #include "libbb.h"
 
 extern int pivot_root(const char * new_root,const char * put_old);